PROCESS FOR SECURING A LOGISTICS AREA

Abstract

The invention relates to a method (2) for safeguarding a logistics area (100), comprising the steps: monitoring a first control zone (9a); detecting whether a first vehicle module (23a) is present in the control zone (9a), wherein the first vehicle module (23a) is matched to the control antenna unit (15a, 15b); setting a safety status indicator (IS) in a first vehicle processing unit (25a) of the first vehicle module (23a) in response to detecting the first vehicle module (23a) in the control zone (9a, 9b); maintaining the safety status indicator (IS) in the first vehicle processing unit (25a), even when the first vehicle module (23a) is leaving the control zone (9a, 9b); monitoring an enabling zone (13); detecting whether the first vehicle module (23a) is present in the enabling zone (13), and deleting the first safety status indicator (IS) when it is detected that the first vehicle module (23a) is present in the enabling zone (13). The invention further relates to a logistics safety system (1), the use of a logistics safety system (1) and a computer program.

Claims

1. A method (2) for safeguarding a logistics area (100), particularly a loading zone (102), comprising the steps: monitoring a control zone (9a, 9b) which is a sub-region of a first three-dimensional electromagnetic field provided by a control antenna unit (15a, 15b); detecting whether a first vehicle module (23a) is present in the control zone (9a, 9b), the first vehicle module (23a) being mounted on a first vehicle (3a), particularly an industrial truck and/or autonomous vehicle, and being matched to the control antenna unit (15a, 15b); setting a safety status indicator (IS) in a first vehicle processing unit (25a) of the first vehicle module (23a) in response to detecting the first vehicle module (23a) in the control zone (9a, 9b); maintaining the safety status indicator (IS) in the first vehicle processing unit (25a), even when the first vehicle module (23a) is leaving the control zone (9a, 9b); monitoring an enabling zone (13); detecting whether the first vehicle module (23a) is present in the enabling zone (13), and deleting the first safety status indicator (IS) when it is detected that the first vehicle module (23a) is present in the enabling zone (13).

2. The method (2) according to claim 1, wherein, in addition to deleting the first safety status indicator (IS), the following is performed: replacing the safety status indicator (IS) with a second status indicator (12) in the first vehicle processing unit (25a) of the first vehicle module (23a) when it is detected that the first vehicle module (23a) is present in the enabling zone (13).

3. The method according to claim 1 or 2, further comprising: restricting at least one degree of freedom of movement of the first vehicle (3a) when the safety status indicator (IS) is set in the first vehicle processing unit (25a).

4. The method (2) according to claim 3, further comprising: enabling the at least one degree of freedom of movement of the first vehicle (3a) when the safety status indicator (IS) is deleted from the first vehicle processing unit (25a).

5. The method (2) according to claim 2 and 3 or 4, further comprising: enabling the at least one degree of freedom of movement of the first vehicle (3a) when the second status indicator (12) is set in the first vehicle processing unit (25a).

6. The method (2) according to any one of claims 3 to 5, wherein the degree of freedom of movement is selected from one of the following parameters: driving speed of the vehicle, curve radius, lifting height of a lifting unit of the vehicle, acceleration of the vehicle, possible direction of travel of the first vehicle, particularly forward travel and/or reverse travel of the first vehicle, maximum attainable driving speed when travelling forwards with the first vehicle, maximum attainable driving speed when travelling backward with the first vehicle, enabled range of movement of the vehicle.

7. The method (2) according to any one of the preceding claims, wherein the step of detecting whether a first vehicle module (23a) is present in the control zone (9a) is performed by the first vehicle module (23a).

8. The method (2) according to any one of the preceding claims, further comprising: defining a first vehicle warning zone (37a) for the first vehicle (3a), which first vehicle warning zone is a sub-region of a third electromagnetic field provided by a first vehicle antenna unit (27a) on the first vehicle (3a); detecting whether a second vehicle module (23b) matched to the first vehicle warning zone (37a) is present in the first vehicle warning zone (37a); capturing a status indicator (I) set in a second vehicle processing unit (25b) of the second vehicle module (23b); comparing the status indicator (I) set in the first vehicle processing unit (25a) with the status indicator (I) set in the second vehicle processing unit (25b); and performing at least one follow-on operation (F) when the status indicator (I) set in the second vehicle processing unit (25b) differs from the status indicator (I) set in the first vehicle processing unit (25a).

9. The method (2) according to claim 7 or 8, further comprising: defining a second vehicle warning zone (37b) for the second vehicle (3b), which second vehicle warning zone is a sub-region of a fourth three-dimensional electromagnetic field provided by a second vehicle antenna unit (27b); receiving a configuration (KW2) of the second vehicle warning zone (37b) of the second vehicle (3b) at the first vehicle module (23a); and detecting by the first vehicle module (23a) whether the first vehicle module (23a) is present in the second vehicle warning zone (37b).

10. The method (2) according to any one of claim 8 or 9, further comprising: detecting whether the first vehicle module (23a) and the second vehicle module (23b) are approaching one another.

11. The method (2) according to claim 10, wherein the at least one follow-up operation (F) is performed only when it is detected that the first vehicle module (23a) and the second vehicle module (23b) are approaching one another.

12. The method (2) according to any one of claims 8 to 11, wherein the follow-on operation (F) comprises at least one of the following steps: providing a warning signal at the first vehicle (3a); providing a warning signal at the second vehicle (3b); restricting at least one degree of freedom of movement of the first vehicle (3a); and/or restricting at least one degree of freedom of movement of the second vehicle (3b).

13. The method (2) according to any one of the preceding claims, wherein the first control zone (9a) covers a transition (41a, 41b, 41c, 41d) between a loading ramp (106a, 106b, 106c, 106d) and a transport vehicle (200a, 200b, 200c, 200d) to be loaded or unloaded.

14. The method (2) according to claim 11, further comprising: detecting whether the first vehicle module (23a) mounted on the first vehicle (3a) is present on a loading area (202a, 202b, 202c, 202d) of the transport vehicle (200a, 200b, 200c, 200d).

15. The method (2) according to claim 14, further comprising: detecting whether the transport vehicle (200a, 200b, 200c, 200d) is moving; and at least one of the steps: providing a warning signal at the first vehicle module (23a); braking the first vehicle (3a) to a stop when it is detected that the transport vehicle (200a, 200b, 200c, 200d) is moving and the first vehicle module (23a) is present on the loading area (202a, 202b, 202c, 202d) of the transport vehicle (200a, 200b, 200c, 200d).

16. The method (2) according to claim 14 or 15, further comprising: detecting whether the first vehicle module (23a) mounted on the first vehicle (3a) is leaving the loading area (202a, 202b, 202c, 202d) of the transport vehicle (200a, 200b, 200c, 200d).

17. The method (2) according to claim 16, further comprising: capturing an image of the first vehicle (3a), the transport vehicle (200a, 200b, 200c, 200d) and/or a load of the first vehicle (3a) when it is detected that the first vehicle module (23a) is leaving the loading area (202a, 202b, 202c, 202d) of the transport vehicle (200a, 200b, 200c, 200d).

18. The method (2) according to any one of the preceding claims, further comprising: detecting an open state of a gate (108a, 108b, 108c, 108d) disposed in the first control zone (9a), wherein the step of monitoring a first control zone (9a) only takes place when it is detected that the gate (108a, 108b, 108c, 108d) is open.

19. A logistics safety system (1) for safeguarding a logistics area (100), comprising: a control module (7a, 7b), comprising: a control antenna unit (15a, 15b) comprising at least one first control antenna (17aa, 17ab, 17ba, 17bb) implemented for being mounted in a predetermined spatial relationship to a loading zone (102) of the logistics area (100) and for generating a first three-dimensional electromagnetic field, a control processing unit (16a, 16b) connected to the control antenna unit (15a, 15b) and adapted for defining at least one control zone (9a, 9b) for the loading zone (102), which is a sub-region of the first three-dimensional electromagnetic field; an enabling module (11), comprising: an enabling antenna unit (19) comprising at least one first enabling antenna (21) implemented for generating a second three-dimensional electromagnetic field, an enabling processing unit (20) connected to the enabling antenna unit (19) and adapted for defining at least one enabling zone (13) which is a sub-region of the second three-dimensional electromagnetic field, and a first vehicle module (23a) fora first vehicle (3a), comprising a first vehicle antenna unit (27a), comprising at least one first vehicle antenna (41aa, 41ab) implemented for being mounted in a predetermined spatial relationship on the first vehicle (3a), and for generating a third three-dimensional electromagnetic field, and a first vehicle processing unit (25a) connected to the first vehicle antenna unit (27a), which first vehicle processing unit is adapted for defining at least one first vehicle warning zone (37a) for the first vehicle (3a), which first vehicle warning zone is a sub-region of the third electromagnetic field, wherein the first vehicle processing unit (25a) is adapted for detecting by means of the first vehicle antenna unit (27a) whether the control module (7a, 7b) matched to the first vehicle antenna unit (27a) and/or the enabling module (13) matched to the first vehicle antenna unit (27a) is present within the first vehicle warning zone (37a), wherein the first vehicle processing unit (25a) is implemented for setting a safety status indicator (IS) in response to detecting the control module (7a, 7b) in the first vehicle warning zone (37a), and for deleting the safety status indicator (IS) in response to detecting the enabling module (11) in the first vehicle warning zone (37a).

20. The logistics safety system (1) according to claim 19, wherein the first vehicle processing unit (25a) is implemented for replacing the safety status indicator (IS) with a second status indicator (12) in response to detecting the enabling module (11) in the first vehicle warning zone (37).

21. The logistics safety system (1) according to claim 19 or 20, wherein the first vehicle module (23a) is implemented for sending a configuration of the first vehicle warning zone (37) to the control module (7a, 7b) and/or to the enabling module (11) when said module is present within range of the first vehicle antenna unit (27a).

22. The logistics safety system (1) according to any one of claims 19 to 21, wherein the control module (7a, 7b) is implemented for sending the configuration of the control zone (9a, 9b) to the first vehicle module (23a) when said module is present within range of the control module (7a, 7b).

23. The logistics safety system (1) according to any one of claims 19 to 22, wherein the enabling module (11) is implemented for sending the configuration of the enabling zone (13) to the first vehicle module (23a) when said module is present within range of the enabling module (11).

24. The logistics safety system (1) according to any one of claims 19 to 23, wherein the first vehicle processing unit (25a) is implemented for being connected to a control unit (31a) of the first vehicle (3a) and is implemented for restricting a degree of freedom of movement of the first vehicle (3a) when a safety status indicator (IS) is set.

25. The logistics safety system (1) according to any one of claims 19 to 24, further comprising: a second vehicle module (23b) fora second vehicle (3b), comprising a second vehicle antenna unit (27b), comprising at least one second vehicle antenna (41ba, 41bb), implemented for being mounted in a predetermined spatial relationship on the second vehicle (3b), and for generating a fourth three-dimensional electromagnetic field, and a second vehicle processing unit (25b) connected to the second vehicle antenna unit (27b), which second vehicle processing unit is adapted for defining at least one second vehicle warning zone (37b) for the second vehicle (3b), which second vehicle warning zone is a sub-region of the fourth electromagnetic field, wherein the second vehicle processing unit (25b) is adapted for detecting by means of the second vehicle antenna unit (27b) whether the control module (7a, 7b) matched to the second vehicle antenna unit (27b) and/or the enabling module (11) matched to the vehicle antenna unit (27b) is present within the second vehicle warning zone (37b). wherein the second vehicle processing unit (25b) is implemented for setting a safety status indicator (IS) in response to detecting the control module (7a, 7b) in the second vehicle warning zone (37b), and for deleting the safety status indicator (IS) in response to detecting the enabling module (11) in the second vehicle warning zone (37b).

26. The logistics safety system (1) according to claim 25, wherein the seco nd vehicle processing unit (25b) is implemented for replacing the safety status indicator (IS) with a second status indicator (12) in response to detecting the enabling module (11) in the second vehicle warning zone (37b).

27. The logistics safety system (1) according to claim 25 or 26, wherein the first vehicle processing unit (25a) is implemented for detecting by means of the first vehicle antenna unit (27a) whether the second vehicle module (23b) matched to the first vehicle antenna unit (27a) is present within the first vehicle warning zone (37a).

28. The logistics safety system (1) according to claim 27, wherein the second vehicle module (23b) is implemented for sending a status indicator (I) set in the second vehicle processing unit (25b) to the first vehicle module (23a) when said module is present within range of the second vehicle antenna unit (37b).

29. The logistics safety system (1) according to claim 28, wherein the first vehicle module (23a) is implemented for determining, based on the received status indicator (I) of the second vehicle module (23b), whether the status indicator (I) of the first vehicle module (23a) and the status indicator (I) of the second vehicle module (23b) differ from one another.

30. The logistics safety system (1) according to claim 29, wherein the first vehicle module (23a) is implemented for outputting a warning signal when it is determined that the status indicator (I) of the first vehicle module (23a) and the status indicator (I) of the second vehicle module (23b) differ from one another.

31. The logistics safety system (1) according to claim 29 or 30, wherein the first vehicle module (23a) is implemented for restricting at least one degree of freedom of movement of the first vehicle (3a) when it is determined that the status indicator (I) of the first vehicle module (23a) and the status indicator (I) of the second vehicle module (23b) differ from one another.

32. The logistics safety system (1) according to any one of claims 25 to 31, wherein the second vehicle processing unit (25b) is implemented for detecting by means of the second vehicle antenna unit (27b) whether the first vehicle module (23a) matched to the second vehicle antenna unit (27b) is present within the second vehicle warning zone (37b).

33. The logistics safety system (1) according to claim 32, wherein the first vehicle module (23a) is implemented for sending a status indicator (I) set in the first vehicle processing unit (25a) to the second vehicle module (23b) when said module is present within range of the first vehicle antenna unit (27a).

34. The logistics safety system (1) according to claim 33, wherein the second vehicle module (23b) is implemented for determining, based on the received status indicator (I) of the first vehicle module (23a), whether the status indicator (I) of the second vehicle module (23b) and the status indicator (I) of the first vehicle module (23a) differ from one another.

35. The logistics safety system (1) according to claim 34, wherein the second vehicle module (23b) is implemented for outputting a warning signal when it is determined that the status indicator (I) of the second vehicle module (23b) and the status indicator (I) of the first vehicle module (23a) differ from one another.

36. The logistics safety system (1) according to claim 34 or 35, wherein the second vehicle module (23b) is implemented for restricting at least one degree of freedom of movement of the second vehicle (3b) when it is determined that the status indicator (I) of the second vehicle module (23b) and the status indicator (I) of the first vehicle module (23a) differ from one another.

37. The logistics safety system (1) according to any one of claims 19 to 36, wherein the control module (7a, 7b) comprises a capturing device (33), wherein the control processing unit (16a, 16b) is adapted for detecting by means of the control antenna unit (15a, 15b) whether a first vehicle module (23a) and/or second vehicle module (23b) matched to the first control antenna unit (15a, 15b) is present within the control zone (9a, 9b), and wherein the control processing unit (16a, 16b) is adapted for triggering the capturing device (33) for capturing an image and/or video when it is detected that the first vehicle module (23a) and/or the second vehicle module (23b) is present within the control zone (9a, 9b).

38. The logistics safety system (1) according to claim 37, wherein the control module (7a, 7b) is implemented for detecting whether a vehicle module (23a, 23b) is present within the control zone (9a, 9b) for the second time within a predefined time period (T), and for only triggering the capturing device (33) when it is detected that the vehicle module (23a, 23b) is present within the control zone (9a, 9b) for the second time within a predefined time period (T).

39. The logistics safety system (1) according to claim 37 or 38, wherein the control processing unit (16a, 16b) is implemented for detecting a load of the first vehicle (3a) and/or the second vehicle (3b) using the capturing device.

40. The logistics safety system (1) according to any one of claims 19 to 39, wherein the first vehicle module (23a) comprises a vehicle capturing device (67), and the first vehicle processing unit (25a) is adapted for triggering the vehicle capturing device (67) for capturing an image and/or video.

41. The logistics safety system (1) according to claim 40, wherein the first vehicle processing unit (25a) is adapted for detecting by means of the first vehicle antenna unit (27a) whether a control module (7a, 7b) matched to the first vehicle antenna unit (27a) is present within the first vehicle warning zone (37a) present, and wherein the first vehicle processing unit (25a) is adapted for triggering the vehicle capturing device (67) when it is detected that the control module (7a, 7b) is present within the first vehicle warning zone (37a).

42. The logistics safety system (1) according to claim 41, wherein the first vehicle module (23a) is implemented for detecting whether a control module (7a, 7b) is present within the first vehicle warning zone (37a) for the second time within a second predefined time period, and for triggering the vehicle capturing device (67) only when it is detected that the control module (7a, 7b) is present within the first vehicle warning zone (37a) for the second time within the second predefined time period.

43. The logistics safety system (1) according to any one of claims 40 to 42, wherein the vehicle capturing device (67) can only be triggered when a predetermined status indicator (I) is set.

44. The logistics safety system (1) according to claim 43, wherein the predetermined status indicator (I) is the safety status indicator (IS).

45. The logistics safety system (1) according to any one of claims 40 to 44, wherein the first vehicle module (23a) comprises a load sensor (77) and wherein the first vehicle processing unit (25a) is implemented, using the load sensor (77), for detecting a change of the load state of the first vehicle (3a) and for triggering the vehicle capturing device (67) in response to detecting a change in the load state of the first vehicle (3a).

46. The logistics safety system (1) according to any one of claim 41, 42 or 45, wherein the first vehicle processing unit (25a) is implemented for triggering the vehicle capturing device (67) after a time delay.

47. The logistics safety system (1) according to any one of claims 40 to 46, wherein the first vehicle processing unit (25a) is implemented for detecting a load (75) of the first vehicle (3a) using the vehicle capturing device (67).

48. The logistics safety system (1) according to any one of the preceding claims 19 to 47, wherein the control module (7a, 7b) is implemented for detecting using the status indicator (I) of the vehicle module (23a, 23b, 23c) whether a vehicle (3a, 3b, 3c) provided with a vehicle module (23a, 23b, 23c) is authorised to drive into the control zone (9a, 9b).

49. A use of a logistics safety system (1) according to any one of the preceding claims 19 to 48 for performing the steps of a method (2) according to any one of the preceding claims 1 to 18.

50. A computer program, comprising commands causing the logistics safety system (1) according to any one of claims 19 to 48 to execute the method (2) according to any one of claims 1 to 18 when the computer program is executed on a processing unit.

Description

[0057] Embodiments of the invention are now be described below with reference to the drawings. Said drawings are not necessarily intended to depict the embodiments to scale; rather, the drawings are shown in schematic and/or slightly distorted form for explanatory purposes. With respect to supplements to the teachings directly discernible from the drawings, reference is made to the applicable prior art. It must be taken into account that various modifications and changes relating to the shape and detail of an embodiment can be made without deviating from the general idea of the invention. The features of the invention disclosed in the description, in the drawings, and in the claims can be essential to the refinement of the invention individually and in any arbitrary combination. In addition, all combinations of at least two of the features disclosed in the description, the drawings and/or the claims fall within the scope of the invention. The general idea of the invention is not limited to the precise form or the detail of the preferred embodiments shown and described below or limited to a subject-matter that would be limited in comparison with the subject-matter claimed in the claims. In the case of the specified measurement ranges, values lying within the stated limits should also be disclosed as limit values and be able to be used and claimed as required. For simplicity, identical reference numerals are used below for identical or similar parts or parts having identical or similar functions. Further advantages, features and details of the invention emerge from the following description of the preferred embodiments and on the basis of the drawings. These show in:

[0058] FIG. 1a a schematic plan view of a logistics area having a logistics safety system according to a first embodiment;

[0059] FIG. 1b a schematic plan view of the logistics area according to the first embodiment, wherein the first vehicle has a position that has been changed from FIG. 1a;

[0060] FIG. 1c a schematic plan view of the logistics area according to the first embodiment, wherein the first vehicle has a position that has been changed from FIGS. 1a and 1b;

[0061] FIG. 1d a schematic plan view of the logistics area according to the first embodiment, wherein the first vehicle is disposed in an enabling zone;

[0062] FIG. 2a a schematic representation representing the steps of a first preferred embodiment of the method according to the invention which are performed when the vehicle is moving, as shown in FIGS. 1a to 1d;

[0063] FIG. 2b a schematic representation showing further steps of the first preferred embodiment of the method according to the invention;

[0064] FIG. 3a a schematic plan view of a logistics area having a logistics safety system according to a second embodiment with three vehicles;

[0065] FIG. 3b a schematic plan view of a logistics area having the logistics safety system according to the second embodiment, wherein the vehicles have changed positions;

[0066] FIG. 4 a schematic representation showing the steps of a second preferred embodiment of the method according to the invention which are performed in the situation shown in FIGS. 3a and 3b;

[0067] FIG. 5a a schematic plan view of a logistics area having a logistics safety system according to a third embodiment, wherein the control zones are defined differently than in the first embodiment;

[0068] FIG. 5b a schematic plan view of a logistics area having a logistics safety system according to the third embodiment, wherein two gates of the logistics area are closed;

[0069] FIG. 6 a schematic representation of a first vehicle transporting a load;

[0070] FIG. 7 in a schematic manner, the structure of a vehicle module, a control module and an enabling module; and in

[0071] FIG. 8 in a schematic manner, the communication between a first vehicle module and a second vehicle module.

[0072] FIG. 1a shows a logistics safety system 1 for safeguarding a logistics area 100 which, according to this embodiment, is a loading zone 102. The loading zone 102 here comprises four parking spaces for transport vehicles 200a, 200b, 200c, 200d, wherein the logistics area 100 is present approximately at the level of the loading areas 202a, 202b, 202c, 202d of the transport vehicles 200a, 200b, 200c, 200d. The loading zone 102 comprises four loading ramps 106a, 106b, 106c, 106d in order to bridge a gap S between the loading areas 202a, 202b, 202c, 202d of the transport vehicles 200a, 200b, 200c, 200d and the loading zone 102. Said loading ramps 106a, 106b, 106c, 106d can be placed on the loading areas 202a, 202b, 202c, 202d and enable a first vehicle 3a, which here is a forklift 5, to drive onto the loading areas 202a, 202b, 202c, 202d. As the direction of travel R of the first vehicle 3a, indicated by an arrow, makes clear, the first vehicle 3a drives onto the loading area 202a of the first transport vehicle 200a and thereby drives through a gate 108a. The other parking spaces also comprise gates 108a, 108b, 108c, 108d. In order to prevent vehicles 3a from falling, the gates 108a, 108b, 108c, 108d are preferably closed when no transport vehicle 200a, 200b, 200c, 200d is being loaded and/or unloaded.

[0073] A first control module 7a of the logistics safety system 1 defines a first control zone 9a. The first control module 7a is disposed here in a fixed relationship between the first gate 108a and the second gate 108b, wherein the first control zone 7a covers the two gates 108a, 108b or transition areas between the loading ramps 106a, 106b, 106c, 106d and the loading areas 200a, 200b, 200c, 200d. It can also be provided that the first control zone 9a only covers the first gate 108a or a transition between the loading ramp 106a and the first loading area 202a.

[0074] In an analogous manner, a second control module 7b of the logistics safety system 1 is disposed between the third gate 108c and the fourth gate 108d and defines a second control zone 9b. In this embodiment, the first control zone 9a and the second control zone 9b are implemented circular in a vertical projection. However, provision can also be mad e for the control zones to be implemented square, rectangular, elliptical, trapezoidal, triangular and/or polygonal in a vertical projection. Furthermore, a shape of the first control zone 9a can differ from a shape of the second control zone 9b. All control zones 9a, 9b of the logistics safety system 1 are preferably implemented identically. Furthermore, it should be understood that the logistics safety system 1 can also comprise only one control zone 9a, 9b. For example, the first control zone 9a could cover all gates 108a, 108b, 108c, 108d.

[0075] A enabling module 11 is disposed at a distance from the control modules 7a, 7b and defines an enabling zone 13. The enabling zone 13 here is substantially rectangular, wherein said enabling zone can also be circular, elliptical, triangular, square, polygonal or trapezoidal, analogous to the control zones 9a, 9b. Furthermore, it can also be provided that the enabling zone 13 touches the first control zone 9a and/or the second control zone 9b or terminates directly therewith. The first control module 7a comprises a first control antenna unit 15a comprising a first control antenna 17a. In an analogous manner, the second control unit 7b also comprises a second control antenna unit 15b comprising a second control antenna 17b. The control antenna units 15a, 15b of the control modules 7a, 7b preferably comprise a plurality of control antennas 17aa, 17ab, 17ba, 17bb, which are particularly preferably mounted in a fixed spatial relationship to one another. The enabling module 11 also comprises an antenna unit, which is referred to as the enabling antenna unit 19. The enabling antenna unit 19 has two enabling antennas 21 in said embodiment.

[0076] The first control module 7a and the second control module 7b are each implemented for generating a three-dimensional electromagnetic field by means of the control antenna unit 15a, 15b (not shown). Furthermore, the control units 7a, 7b are implemented for defining the control zone 9a, 9b, which are a sub-region of the three-dimensional electromagnetic field generated by the respective control unit 7a, 7b. It should be understood that a rang e of the control antennas 17aa, 17ab, 17ba, 17bb and thus also a size of the electromagnetic fields generated is preferably greater than the area covered by the control zone 9a, 9b. The enabling module 11 is also implemented for generating a three-dimensional electromagnetic field by means of the enabling antennas 21 of the enabling antenna unit 19, wherein the enabling module 11 analogously defines the enabling zone 13 as a subregion of said electromagnetic field, not shown.

[0077] A first vehicle module 23a, the structure of which will be explained later, is mounted on the vehicle 3a. The vehicle module 23a is matched to the control antenna unit 15a, 15b and the enabling antenna unit 19. For example, the radio frequency ranges of the vehicle module 23a and the control antenna unit 15a, 15b can be matched with one another. If the first vehicle 3a enters the first control zone 9a, the first vehicle module 23a mounted thereon also enters the control zone 9a. Here, both the control module 7a and the first vehicle module 23a are implemented for recognising whether the first vehicle 3a is present in the first control zone 9a. However, it can also be provided that the recognition of whether the first vehicle 3a is present in the first control zone 9a is performed only by the first vehicle module 23a or only by the first control module 7a. In an analogous manner, the second control module 7b is also implemented here for recognising whether the first vehicle module 23a is present in the second control zone 9b.

[0078] Referring to FIG. 2a, steps of a preferred embodiment of the method 2 are explained, which are performed until it is detected whether the first vehicle 3a is present in the first control zone 9a. In a first step S1, the first control module 7a generates and maintains a three-dimensional electromagnetic field by means of the first control antenna unit 15a. In a second step S2, a control processing unit 16a (FIG. 7) of the first control module 7a defines the first control zone 9a which is a sub-region of the three-dimensional electromagnetic field generated by the first control antenna unit 15a. The first control module 7a then monitors the first control zone 9a (step S3). A fifth step S5 by the first control processing unit 16a of the first control module 7a detects when the first vehicle module 23a matched to the control antenna unit 15a enters the first control zone 9a (step S4). In a sixth step S6, the control module 7a sends a configuration KK1 of the first control zone 9a to the first vehicle module 23a using the control antenna unit 15a. The first vehicle module 23a receives said configuration KK1 of the first control zone 9a by means of a first vehicle antenna unit 27a (FIG. 7), which in turn is connected to a first vehicle processing unit 25a (step S7). By means of the received configuration KK1 of the first control zone 9a, the first vehicle processing unit 25a then detects that the first vehicle 3a is present within the first control zone 9a (step S8). In a ninth step S9, the first vehicle processing unit 25a sets a safety status indicator IS in the first vehicle processing unit 25a in response to said determination. In said embodiment, the first vehicle processing unit 25a is connected to a controller 31a (controller 31a is not shown in all figures) of the first vehicle 3a, so that the first vehicle processing unit 25a provides a first restriction signal SB1 to the controller 31a (step S10). If the first restriction signal SB1 is provided to the controller 31a, said controller restricts one or more or all degrees of freedom of movement of the first vehicle 3a (step S11).

[0079] The first vehicle module 23a preferably comprises an output unit 51 (FIG. 7) which is implemented for outputting a warning signal when it is detected that the first vehicle 3a is present within the control zone 9a. In said embodiment, a maximum speed of the vehicle 3a is reduced when the restriction signal SB1 is provided. A maximum speed of the first vehicle 3a when driving on the first loading ramp 106a is reduced, as a result of which damage to the first vehicle 3a is prevented. Furthermore, collisions between the first vehicle 3a and the first gate 108a and/or a side wall 204a of the first transport vehicle 200a can be avoided.

[0080] According to FIG. 1b, the first vehicle 3a is disposed on the first loading area 202a of the first transport vehicle 200a and leaves the first control zone 9a in the direction of travel R. The vehicle is therefore moving towards a drivers cab 206a of the first vehicle 3a. Based on the configuration KK1 of the first control zone 9a received in step S7, the first vehicle processing unit 25a detects that the first vehicle 3a or the first vehicle module 23a is leaving the first control zone 9a. Even when the first vehicle module 23a leaves the control zone 9a, the safety status indicator IS is retained in the first vehicle processing unit 25a of the first vehicle module 23a. Said embodiment thus also achieves a restriction of a maximum speed of the first vehicle 3a when the vehicle 3a is not present in the first control zone 9a. The first control zone 9a can thus also only cover a sub-region of the first loading area 202a, which advantageously means that an area to be monitored is restricted without reducing the safety effect that can be achieved using the logistics safety system 1.

[0081] The first vehicle processing unit 25a of the first vehicle module 23a preferably provides a restriction signal SB1 to the controller 31a of the first vehicle 3a such that a maximum lift height of a lift mast (not shown) of the forklift 5 is restricted. This can prevent a roof (not shown) disposed above the loading area 202a or a tarpaulin (not shown) covering the loading area 202a from being damaged by the lift mast of the forklift 5. Furthermore, a collision between the lift mast and the first gate 108a can be avoided. In FIG. 2a, the retention of the safety status indicator IS in the vehicle processing unit 25a when the first vehicle module 23a leaves the first control zone 9a is represented by step S12.

[0082] FIG. 1c illustrates that the safety status indicator IS is also retained in the first vehicle processing unit 25a of the first vehicle module 23a when the first vehicle 3a re-enters the first control zone 9a (step S13). In said embodiment, the first control module 7a is implemented for detecting whether the first vehicle module 23a enters the first control zone 9a for the second time within a predefined time period T. In response to such a determination that the first vehicle module 23a is entering the first control zone 9a for the second time within the predefined time period T (step es 13), the first control module 7a triggers a capturing device 33 connected to the first control module 7a (step S14), which capturing device is implemented here as a camera 35 (only shown in FIG. 1c). If the camera 35 is triggered, it takes a picture of the first vehicle 3a and the load (not shown) transported by said first vehicle 3a. The image can then be used to determine whether the load is damaged during the unloading from the loading area 202a onto the loading zone 102. It can also be provided that the first control module 7a is implemented for triggering the capturing device 33 when the first vehicle module 23a is present in the first control zone 9a for the first time within a predefined time period T. This is particularly desirable when, after logistics processing, it is to be detected whether transport goods were already damaged when they were loaded onto a transport vehicle 200a, 200b, 200c, 200d. Taking into account the predefined time period is then particularly desirable since the first vehicle 3a typically drives through the first control zone 9a several times a day.

[0083] According to FIG. 1d, the first vehicle 3a has entered the enabling zone 13, which is monitored by the enabling module 11. When it is detected that the first vehicle module 23a is present within the enabling zone 13, the first safety status indicator IS is deleted from the vehicle processing unit 25a. The arrow 33 illustrating the direction of travel R is longer in FIG. 1d than in FIGS. 1a to 1c, thereby representing the now no longer restricted maximum speed of the first vehicle 3a. FIG. 2b illustrates the sequence of the preferred embodiment of the method 2 when the vehicle 3a drives into the enabling zone 11, wherein only step S14 of the preceding steps S11 to S14 is shown in FIG. 4. In a fifteenth step S15, the enabling module 11 generates a three-dimensional electromagnetic field (not shown) by means of the enabling antenna unit 19. A enabling processing unit 35 of the enabling module 11 then defines the enabling zone 13, which is a sub-region of the three-dimensional electromagnetic field generated by the enabling antenna unit 19 (step S16). It should be understood that the enabling zone 13 is preferably smaller than a total range of the enabling antennas 21.

[0084] The enabling module 11 monitors the enabling zone 13 in a seventeenth step S17 of the method 2. If the first vehicle 3a on which the first vehicle module 23a is mounted now drives into the enabling zone 13 in an eighteenth step S18, this entry is detected in a nineteenth step S19 by the enabling processing unit 35 of the enabling module 11. In response to the determination that the first vehicle module 23a matched to the enabling processing unit 19 is present in the enabling zone 13, the enabling module 11 sends a configuration of the enabling zone 13 to the first vehicle module 23a (step S20). When the first vehicle module 23a receives the configuration of the enabling zone 13 (step S21), the first vehicle processing unit 25a of the first vehicle module 23a detects that the first vehicle 3a is present in the enabling zone 13 (step S22). The safety status indicator IS is then deleted from the first vehicle processing unit 25a in a twenty-third step S23.

[0085] As the branch in FIG. 2b illustrates, alternatively or additionally, in a twenty-fourth step S24, a second status indicator I2 can be set in the first vehicle processing unit 25a when it is detected that the first vehicle module 23a is present within the enabling zone 13. If the safety status indicator IS is deleted or replaced by a second status indicator I2, the first vehicle processing unit 25a provides an enabling signal SF to the controller 31a of the first vehicle 3a (step S25). Preferably, a restriction on the degree of freedom of movement of the vehicle 3a, which here corresponds to a restriction on the maximum speed of the vehicle 3a, is thus lifted. It can, however, be provided that a restriction on the degree of freedom of movement of the first vehicle 3a is only partially lifted and/or that a restriction on a first degree of freedom is lifted while a restriction on a second degree of freedom of movement of the first vehicle 3a is retained. For example, a maximum speed of the vehicle 3a can be increased when the second status indicator I2 is set, wherein a maximum acceleration of the first vehicle 3a remains restricted. A further restriction of the at least one degree of freedom of movement of the vehicle 3a takes place preferably when the second status indicator I2 is set in the first vehicle processing unit 25a. As FIG. 2b shows, steps S15 to S17 are preferably performed in parallel with steps S1 to S14. It should thus be made clear that the enabling zone 13 and the control zone 9a, 9b are preferably monitored simultaneously.

[0086] In a second embodiment, in addition to the first vehicle 3a, a second vehicle 3b and a third vehicle 3c are also shown in the logistics area 100. The disposition of the control modules 7a, 7b, the enabling module 11, the control zones 9a, 9b and the enabling zone 13 in FIGS. 3a, 3b is analogous to the disposition shown in FIGS. 1a to 1d. Analogously to the first vehicle 3a, the second vehicle 3b comprises a second vehicle module 23b and the third vehicle 3c comprises a third vehicle module 23c. The first vehicle module 23a, the second vehicle module 23b and the third vehicle module 23c are preferably implemented identically. The first vehicle module 23a comprises a first vehicle antenna unit 27a which is implemented for generating a three-dimensional electromagnetic field (not shown). The first vehicle processing unit 25a is implemented for defining a first vehicle warning zone 37a which is a sub-region of the three-dimensional electromagnetic field generated by the first vehicle antenna unit 27a. Here, the first vehicle warning zone 37a is implemented circular in a vertical projection.

[0087] However, it can also be provided that the first vehicle warning zone is implemented square, rectangular, trapezoidal, triangular, elliptical or polygonal. Furthermore, it can be provided that the first vehicle warning zone 37a comprises a plurality of sub-regions which preferably do not overlap and/or are implemented spaced apart from one another. For example, a first sub-region of the first vehicle warning zone 37a can extend in the direction of travel R from the first vehicle 3a, and a second sub-region of the first vehicle warning zone 37a can extend counter to the direction of travel R from a rear 39 of the first vehicle 3a. The second sub-region is preferably smaller than the first sub-region. It should be understood that the second vehicle module 23b and the third vehicle module 23c are also implemented for generating second and third vehicle warning zones, wherein the second vehicle warning zone 37b is only shown in some of the figures and the third vehicle warning zone is not shown for reasons of illustration. The second vehicle module 23b mounted on the second vehicle 3b is just entering the first vehicle warning zone 37 in FIG. 3a.

[0088] FIG. 4 illustrates steps of a preferred embodiment of the method 2, which are preferably performed consecutively or in parallel with steps S1 to S25 described above. In a twenty-sixth step S26, the first vehicle module 23a generates a three-dimensional electromagnetic field by means of the first vehicle antenna unit 27a, wherein the first vehicle processing unit 25a then defines the first vehicle warning zone 37a. The first vehicle warning zone 37a is a sub-region of the three-dimensional electromagnetic field generated by the first vehicle antenna unit 27a (step S27). The first vehicle processing unit 25a then monitors the first vehicle warning zone 37a (step S28). If the second vehicle module 23b matched to the first vehicle antenna unit 27 enters the first vehicle warning zone 37 (step S29), this entry is detected by the first vehicle processing unit 25a (step S30). In response to the determination, the first vehicle module 23a sends the configuration KW1 of the first vehicle warning zone 37a to the second vehicle module 23b using the first vehicle antenna unit 27a (step S31).

[0089] The second vehicle module 23b receives, by means of a second vehicle processing unit 25b, the configuration KW1 of the first vehicle warning zone 37a sent by the first vehicle module 23a (step S32) and detects that the second vehicle module 23b is present within the first vehicle warning zone 37a (step S33). If it is detected that the second vehicle module 23b is present within the first vehicle warning zone 37a, the second vehicle module 23b sends a status indicator I set in the second vehicle processing unit 25b of the second vehicle module 23b to the first vehicle module 23a (step S S34). The first vehicle module 23a receives the status indicator I set in the second vehicle processing unit 25b of the second vehicle module 23b by means of the first vehicle antenna unit 27a (step S35) and, in a thirty-sixth step S36, compares the status indicators I that are set in the first vehicle processing unit 25a and the second vehicle processing unit 25b by means of the first vehicle processing unit 25a. It should be understood that the second vehicle module 23b can also define a second vehicle warning zone 37b and preferably executes steps S26 to S36 of method 2 simultaneously with the first vehicle module 23a.

[0090] As FIG. 3a shows, the first vehicle 3a drives onto the first loading area 202a of the first transport vehicle 200a and thereby crosses the first control zone 9a, so that the safety status indicator IS is set in the first vehicle processing unit 25a. The second vehicle 3b is present on the loading area 202b of the second transport vehicle 200b and has crossed the first control zone 9a for this purpose. The safety status indicator IS was also set in the second vehicle processing unit 25b of the second vehicle module 23b during said crossing. Furthermore, the safety status indicator IS was retained in the second vehicle processing unit 25b when the second vehicle 3b left the first control zone 9a. The safety status indicator IS is therefore set both in the first vehicle processing unit 25a and in the second vehicle processing unit 25b.

[0091] In the situation shown in FIG. 3a, the comparison of the status indicators (step S36) accordingly shows that the status indicator IS set in the first vehicle processing unit 25a matches the status indicator IS set in the second vehicle processing unit 25b, wherein no follow-on operation F in said embodiment is performed when the status indicators I of the first vehicle processing unit 25a and the second vehicle processing unit 25b match.

[0092] The third vehicle module 23c is not disposed within the first vehicle warning zone 7a or the second vehicle warning zone 7a, so that no further steps take place here and the monitoring (step S28) is continued.

[0093] FIG. 3b shows a disposition of the first, second and third vehicles 3a, 3b, 3c in the logistics area 100 which is different from FIG. 3a. The first vehicle 3a is furthermore disposed on the first loading area 202a of the first transport vehicle 200a. The third vehicle 3c is disposed on the second loading area 202b of the second transport vehicle 200b and the second vehicle 3b is now neither present in one of the control zones 9a, 9b nor in the enabling zone 13. The second vehicle warning zone 37b is only partially shown in FIG. 3b and a vehicle warning zone generated by the third vehicle module 23c is not shown.

[0094] According to said embodiment, no status indicator I is set in the second vehicle processing unit 25b of the second vehicle module 23b. The first vehicle module 23a is present in the second vehicle warning zone 37b, which is defined by the second vehicle processing unit 25b of the second vehicle module 23b. In an analogous manner, the second vehicle module 23b is present in the first vehicle warning zone 37a of the first vehicle module 23a. As the arrows 33 show, which illustrate the direction of travel R of the vehicles 3a, 3b, 3c, the first vehicle 3a and the second vehicle 3b move towards one another, wherein a direct visual contact between the first vehicle 3a and the second vehicle 3b through the first gate 108a is prevented. There is thus the risk of a collision between the first and the second vehicle 3a, 3b, which can be prevented by means of the logistics safety system 1.

[0095] FIG. 4 illustrates method steps of a preferred embodiment of method 2, which are performed in the situation shown in FIG. 3b and preferably in parallel with the remaining steps S1 to S36. First, the second vehicle module 23b mounted on the second vehicle 3b enters the first vehicle warning zone 37a (step S29). The first vehicle module 23a detects this (step S30) and then sends the configuration KW1 of the first vehicle warning zone 37a (step 31) to the second vehicle module 23b. The configuration KW1 of the first vehicle warning zone 37a is received at the second vehicle module 23b (step S32) and, in response to this, the second vehicle module 23b detects that it is present within the first vehicle warning zone 37 (step S33). The second vehicle module 23b then sends the status indicator I set in the second vehicle processing unit 25b to the first vehicle module 23a (step S34). It should be understood that step S34 can also be the sending of information which includes that no status indicator I is set in the second vehicle processing unit 25b.

[0096] In contrast to the situation illustrated in FIG. 3a, the second vehicle 3b is not present on one of the loading areas 202a, 202b, 202c, 202d of the transport vehicles 200a, 200b, 200c, 200d. Since the second vehicle 3b was previously present in the enabling zone 13, no status indicator I is stored in the second vehicle processing unit 25b. The safety status indicator IS is set in the first vehicle processing unit 25a, since the first vehicle 3a is present in the control zone 9a. The comparison of the status indicators I performed in step S36 therefore shows that the status indicators I set in the first vehicle processing unit 25a and the second vehicle processing unit 25b differ.

[0097] In response to the determination by the first vehicle processing unit 25a that the status indicators I do not match, the first vehicle processing unit 25a performs a follow-up operation F (step S37). In said embodiment, the first vehicle processing unit 25a provides a second restriction signal SB2 as a follow-on operation 11. In a thirty-eighth step S38, the controller 31a of the first vehicle 3a restricts a degree of freedom of movement of the first vehicle 3a, wherein the first vehicle 3a is braked here to a stop. The complete braking is illustrated by the crossing through of the arrow 33, inserted in FIG. 3b, representing the direction of travel R of the first vehicle 3a.

[0098] The follow-on operation is preferably performed taking into account the status indicator I set in the vehicle processing unit 25a. For example, a second restriction signal SB2 can be provided when the safety status indicator SI is set and a third restriction signal SB3 is provided when the second status indicator I2 or no status indicator is set. In said embodiment, the first vehicle 3a is thus fully braked by providing the second restriction signal SB2 (step S38), while the second vehicle 3b is restricted only in the maximum speed thereof by a provision of the third restriction signal SB3 by the second vehicle processing unit 25b (step S38; made clear by shortening the arrow 33).

[0099] The follow-on operation 11 can preferably also comprise the outputting of a warning signal by means of the output unit 51a, 51b of the vehicle module 23a, 23b, 23c. For example, the vehicle modules 23a, 23b, 23c can comprise optical and/or acoustic output units 51a, 51b, such as signal lights, sirens and/or screens.

[0100] FIG. 5a illustrates a logistics safety system 1 according to a third embodiment, wherein the first control zone 9a and the second control zone 9b are implemented rectangular in a perpendicular projection and are substantially disposed on the opposite sides of the gates 108a, 108b, 108c, 108d on the transport vehicles 200a, 200b, 200c, 200d. To define the control zones 9a, 9b, the control antenna units 15a, 15b each comprise two control antennas 17aa, 17ab, 17ba, 17bb. A rectangularly shaped control zone 9a, 9b can be monitored due to the presence of a plurality of control antennas 17aa, 17ab, 17ba, 17bb. The principle of triangulation is preferably used when defining the control zone 9a, 9b by the control processing units 16a, 16b.

[0101] The control modules 7a, 7b are preferably implemented for being connected to gate controllers 39c, 39d. In the fourth embodiment shown in FIG. 5a, the second control module 7b is connected to a third gate controller 39c of the third gate 108c and a fourth gate controller 39d of a fourth gate 108d. The gate controllers 39c, 39d provide third and fourth closing signals SS3, SS4. It should be understood that the first control module 7a can also be connected to gate controllers 39c, 39d. The control modules 7a, 7b are preferably implemented for defining the control zones 9a, 9b using an open state of a transition 41a, 41b, 41c, 41d to be monitored.

[0102] The third gate 108c and the fourth gate 108b are closed according to FIG. 5b, wherein the first gate controller 39c and the second gate controller 39d provide open state signals which here correspond to the closing signals SS3, SS4. Since the third gate 108c and the fourth gate 108d are closed, there is no risk of vehicles 3a, 3b, 3b falling from the loading zone 102. Therefore, transitions 41c, 41d to the loading areas 202c, 202d do not have to be monitored, and the second control unit 7b subsequently does not define a second control zone 9b. It should be understood that the control modules 7a, 7b according to the further embodiments can also be connected to gate controllers of respectively assigned gates 108a, 108b, 108c, 108d.

[0103] FIG. 6 shows a first vehicle 3a, which here is a forklift 5. The first vehicle module 23a comprises a vehicle capturing device 67, which here is disposed on a lift mast 69 of the forklift 5. A capturing area 71 of the vehicle capturing device 67 is directed towards loading prongs 73 of the forklift 5, so that a load 75 transported by the first vehicle 3a can be captured by the vehicle capturing device 67 when it is triggered by the first vehicle processing unit 25a.

[0104] The first vehicle module 23a also comprises a load sensor 77. The first vehicle processing unit 25a is connected to the load sensor 77 and is implemented for detecting a load state of the first vehicle 3a using the load sensor 77. The vehicle processing unit 25a and the load sensor 77 are wirelessly connected in said embodiment. The vehicle processing unit 25a and the load sensor 77 are preferably connected by means of infrared, ultrasound, Bluetooth® and/or radio. Signals, data and/or electrical energy can then be transmitted between the load sensor 77 and the first vehicle processing unit 25a, for example, via infrared, ultrasound, radio or Bluetooth. The vehicle capturing device 67 and the first vehicle processing unit 25a are preferably also connected wirelessly.

[0105] The first vehicle processing unit 25a can determine whether a load state of the vehicle 3a is changing using the load sensor 77. For example, the picking up or setting down of the load 75 can be registered by the first vehicle processing unit 25a. The first vehicle processing unit 25a is preferably implemented for triggering the vehicle capturing device 67 in response to a change in the load state. If, for example, the load 75 is set down, the vehicle capturing device 67 can record an image of the load 75 at the time of the setting down. The image can then preferably be used for registering damage to the load 75.

[0106] Safety can thus be increased, particularly in the case of dangerous goods. Furthermore, the vehicle processing unit 25a can only be triggered when a predetermined status indicator I, particularly preferably the safety status indicator IS, is set. Thus, it is often only necessary to capture the load 75 in areas that are difficult to see or particularly critical areas, and said restriction can effectively reduce processing effort. For example, it may be necessary to trigger the vehicle capturing device 67 or to take a picture of the load 75 only when the first vehicle 3a sets down a dangerous load 75 on the loading area 202a.

[0107] FIG. 7 schematically shows the structure of a vehicle module 23a, 23b, 23c, a control module 7a, 7b and an enabling module 11. The vehicle module 23a, 23b, 23c comprises a vehicle antenna unit 27a, 27b, 27c, which is shown here comprising a first vehicle antenna 41aa and a second vehicle antenna 41ab. The vehicle processing unit 25a, 25b, 25c is connected to the vehicle antenna unit 27a, 27b, 27c and furthermore comprises a vehicle interface 43a, 43b. The vehicle interface 43a, 43b is shown here comprising a first line 45a, 45b and a second line 47a, 47b, wherein the first line 45a, 45b is implemented for receiving signals, such as speed signals SV, of the vehicle 3a, 3b, 3c. The second line 47a, 47b is provided for outputting signals from the vehicle module 23a, 23b, 23c to the vehicle 3a, 3b, 3c. Thus, the restriction signals SB1, SB2, SB3 and the enabling signal SF can be provided to the controller 31a, 31b of the vehicle 3a, 3b, 3c by means of the second line 47a, 47b. The vehicle module 23a, 23b, 23c also comprises a memory 49 in which, for example, configurations for the vehicle warning zone 37a, 37b can be prestored. Furthermore, the vehicle module 23a, 23b, 23c comprises an output unit 51a, 51b which can output, for example, optical and/or acoustic signals for warning a driver of the vehicle 3a, 3b, 3c.

[0108] In an analogous manner, the control module 7a, 7b comprises the control antenna unit 15a, 15b comprising the control antennas 17aa, 17ab, 17ba, 17bb. The control processing unit 16a, 16b is connected to the control antenna unit 15a, 15b and comprises a control interface 53 for connection to a gate controller 39c, 39d. The control processing unit 16a, 16b can provide signals, such as closing request signals SSA, to the gate controller 39c, 39d by means of a first line 55. The gate controller 39cC, 39d is preferably implemented for closing the gate 108c, 108d in response to the provision of a closing request signal SSA. A second line 57 of the control interface 53 is implemented for receiving the closing signals SS3, SS4. The control module 7a, 7b further comprises a control memory 59 and a control output unit 61. The arrows running between the control unit 15a, 15b and the vehicle module 23a, 23b, 23c represent the sending of the configuration KK of the control zone 9a, 9b and the configuration KW1, KW2 of the vehicle goods zones.

[0109] Finally, FIG. 7 shows the enabling module 11 comprising the enabling antenna unit 19, the enabling antennas 21 and an enabling processing unit 20. Analogous to the control module 7a, 7b and the vehicle module 23a, 23b, 23c, the enabling module 11 also comprises an enabling memory 63 and an enabling output unit 65. The arrows running between the enabling module 11 and the vehicle module 23a, 23b, 23c represent the sending of the configuration KF of the enabling zone 13 from the enabling module 11 to the vehicle module 23a, 23b, 23c and a possible sending of the configuration KW1 of the vehicle warning zone 37a, 37b from the vehicle module 23a, 23b, 23c to the enabling module 11.

[0110] FIG. 8 now illustrates the communication between the first vehicle module 23a and the second vehicle module 23b. The vehicle modules 23a, 23b are implemented identically here and each comprise a vehicle antenna unit 27a, 27b, two vehicle antennas 41aa, 41ab, 41ba, 41bb, a vehicle processing unit 25a, 25b, a memory 49a, 49b, an interface 43a, 43b and an output unit 51a, 51b. The first vehicle module 23a is implemented, by means of the first vehicle antenna unit 27a, for sending a configuration KW1 of the first vehicle warning zone 37a and/or the status indicator I set in the first vehicle processing unit 25a to the second vehicle module 23b. In an analogous manner, the second vehicle module 23b is implemented for sending a configuration KW2 of the second vehicle warning zone 37b and/or a status indicator I set in the second vehicle processing unit 25b.