Configuration of entrance systems having one or more movable door members

Abstract

An entrance system is disclosed which has a movable door member having a door leaf with a first vertical edge and a second vertical edge. A sensor unit monitors a zone at or near the door leaf for presence or activity of a person or object, and captures an image of an external object at the first vertical edge of the door leaf, and processing the captured image to identify an optical code and recognize a learning mode trigger instruction encoded therein. Triggered by the recognizing of the learning mode trigger instruction, a learning mode of the sensor unit is automatically entered into, in which a distance between the sensor unit and the external object at the first vertical edge is automatically measured and a field width parameter value of the sensor unit is set based on the measured distance.

Claims

1. An entrance system comprising: a movable door member having a door leaf with a first vertical edge and a second vertical edge; an automatic door operator comprising a motor configured to cause movement of the door member; and a sensor unit mounted at or near the second vertical edge for monitoring a zone at or near the door leaf for presence or activity of a person or object, the sensor unit being designed for: capturing an image of an external object at the first vertical edge of the door leaf; processing the captured image to identify an optical code and recognize a learning mode trigger instruction encoded therein; triggered by the recognizing of the learning mode trigger instruction, automatically entering into a learning mode of the sensor unit; and in the learning mode, as entered upon being triggered by the recognizing of the learning mode trigger instruction, automatically measuring a distance between the sensor unit and the external object at the first vertical edge, and setting a field width parameter value of the sensor unit based on the measured distance.

2. The entrance system as defined in claim 1, wherein the sensor unit is further designed for: in the learning mode, as entered upon being triggered by the recognizing of the learning mode trigger instruction, automatically measuring a second distance between the sensor unit and floor level, and setting a field height parameter value of the sensor unit based on the measured second distance.

3. The entrance system as defined in claim 1, wherein the sensor unit is further designed for: in the learning mode, as entered upon being triggered by the recognizing of the learning mode trigger instruction, automatically controlling the automatic door operator to cause a full movement of the door member from a first end position to a second end position, while recording the monitored zone at or near the door leaf to generate a default representation of the monitored zone in an absence of a person or object.

4. The entrance system as defined in claim 1, further comprising one or more other sensor units in addition to said sensor unit, wherein said sensor unit is further designed for: processing the captured image to derive a remote configuration instruction encoded in the optical code and pertaining to a configuration of at least one of said one or more other sensor units; and enabling execution of the derived remote configuration instruction by said at least one of said one or more other sensor units.

5. The entrance system as defined in claim 4, wherein the entrance system further comprises a communication bus, wherein said sensor unit, said one or more other sensor units and said automatic door operator are connected to the communication bus, wherein the sensor unit is arranged for enabling execution of the derived remote configuration instruction by transmitting the derived remote configuration instruction in a broadcast message on the communication bus, the broadcast message being receivable by any device connected to the communication bus.

6. The entrance system as defined in claim 4, wherein the entrance system further comprises a communication bus, wherein said sensor unit, said one or more other sensor units and said automatic door operator are connected to the communication bus, wherein the sensor unit is arranged for enabling execution of the derived remote configuration instruction by identifying a recipient device indicated by the remote configuration instruction, the recipient device being one of said one or more other sensor units or said automatic door operator; and transmitting the derived remote configuration instruction in a message on the communication bus and addressed to the recipient device.

7. The entrance system as defined in claim 1, wherein said sensor unit is further designed for: processing the captured image to derive a remote configuration instruction encoded in the optical code and pertaining to a configuration of the automatic door operator; and enabling execution of the derived remote configuration instruction by the automatic door operator.

8. The entrance system as defined in claim 1, wherein the optical code is a machine-readable two-dimensional barcode.

9. The entrance system as defined in claim 1, wherein the optical code is a machine-readable one-dimensional barcode.

10. The entrance system as defined in claim 1, wherein the optical code is a machine-readable three-dimensional barcode.

11. The entrance system as defined in claim 1, wherein the sensor unit comprises sensor functionality for monitoring the zone at or near the door leaf, the sensor functionality comprising: an image sensor function for capturing the image of the external object at the first vertical edge of the door leaf; and a distance sensor function for automatically measuring the distance between the sensor unit and the external object at the first vertical edge.

12. The entrance system as defined in claim 11, wherein the distance sensor function is implemented in any of the following sensor technologies: optical time-of-flight; active IR; optical triangulation; light curtain; stereoscopic camera; ultrasound echo; laser; and microwave radar.

13. A configuration method for an entrance system having: a door movable member comprising a door leaf with a first vertical edge and a second vertical edge, an automatic door operator comprising a motor configured to cause movement of the door member, and a sensor unit mounted at or near the second vertical edge for monitoring a zone at or near the door leaf for presence or activity of a person or object, the configuration method comprising: capturing an image of an external object at the first vertical edge of the door leaf; processing the captured image to identify an optical code and recognize a learning mode trigger instruction encoded therein; triggered by the recognizing of the learning mode trigger instruction, automatically entering into a learning mode of the sensor unit; and in the learning mode, as entered upon being triggered by the recognizing of the learning mode trigger instruction, automatically measuring a distance between the sensor unit and the external object at the first vertical edge, and setting a field width parameter value of the sensor unit based on the measured distance.

14. The configuration method as defined in claim 13, further comprising, in the learning mode, as entered upon being triggered by the recognizing of the learning mode trigger instruction, automatically measuring a second distance between the sensor unit and floor level, and setting a field height parameter value of the sensor unit based on the measured second distance.

15. The configuration method as defined in claim 13, further comprising, in the learning mode, as entered upon being triggered by the recognizing of the learning mode trigger instruction, automatically controlling the automatic door operator to cause a full movement of the door member from a first end position to a second end position, while recording the monitored zone at or near the door leaf to generate a default representation of the monitored zone in the absence of a person or object.

16. The configuration method as defined in claim 13, further comprising: processing the captured image to derive a remote configuration instruction encoded in the optical code and pertaining to a configuration of at least one of said one or more other sensor units; and enabling execution of the derived remote configuration instruction by said at least one of said one or more other sensor units.

17. The configuration method as defined in claim 13, further comprising: processing the captured image to derive a remote configuration instruction encoded in the optical code and pertaining to a configuration of the automatic door operator; and enabling execution of the derived remote configuration instruction by the automatic door operator.

18. The entrance system as defined in claim 1, wherein the optical code is a QR (Quick Response) code.

19. The entrance system as defined in claim 1, wherein the optical code is a UPC (Universal Product Code).

20. The entrance system as defined in claim 1, wherein the optical code is a EAN (European Article Number/International Article Number) code.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Objects, features and advantages of embodiments of the invention will appear from the following detailed description, reference being made to the accompanying drawings.

(2) FIG. 1 is a schematic block diagram of an entrance system having a swing door, an automatic door operator and a sensor unit.

(3) FIG. 2A is a schematic block diagram of an entrance system generally according to the present invention.

(4) FIG. 2B is a schematic block diagram of an embodiment of an automatic door operator which may be included in the entrance system shown in FIG. 2A.

(5) FIG. 3 is a schematic block diagram of a sensor unit generally according to the present invention. The sensor unit is arranged for capturing an image of an external object at a first vertical edge of a door leaf, processing the captured image to identify an optical code and recognize a learning mode trigger instruction encoded therein, and in response automatically entering into a learning mode of the sensor unit.

(6) FIGS. 4A-4D illustrates different steps of a way of configuring an entrance system generally according to the invention.

(7) FIG. 5 is a schematic top view of an entrance system according to one exemplifying embodiment, in the form of a swing door system.

(8) FIG. 6 is a schematic top view of an entrance system according to another exemplifying embodiment, in the form of a revolving door system.

(9) FIG. 7A is a flowchart diagram illustrating a configuration method for an entrance system generally according to the present invention.

(10) FIGS. 7B-7D are flowchart diagrams illustrating a configuration method according to some embodiments of the present invention.

DETAILED DESCRIPTION OF EMBODIMENTS

(11) Embodiments of the invention will now be described with reference to the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. The terminology used in the detailed description of the particular embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, like numbers refer to like elements.

(12) FIG. 2A is a schematic block diagram illustrating an entrance system 1 in which the inventive aspects of the present invention may be applied. The entrance system 1 comprises one or more movable door members DM1 . . . DMm, and an automatic door operator 30 for causing movements 50 of the door members DM1 . . . DMm between different positions, typically between closed and open end positions. The movements 50 may be rotational or translational. In FIG. 2A, a linkage mechanism 40 conveys mechanical power from the automatic door operator 30 to the movable door members DM1 . . . DMm.

(13) The entrance system 1 has a control arrangement 20 which comprises a controller 32. The controller 32 may be part of the automatic door operator 30, as can be seen in the embodiment of FIG. 2B to be described below. In other embodiments the controller 32 may be a separate device. The control arrangement 20 also comprises a number of sensor units S1 . . . Sn, where n≥1. Each sensor unit may generally be connected to the controller 32 by a wired connection, a wireless connection, or a combination thereof.

(14) As will be exemplified in the subsequent description of the different embodiments in FIGS. 4A-D, 5 and 6, each sensor unit is arranged to monitor a respective zone Z1 . . . Zn at the entrance system 1 for presence or activity of a person or object. The person may be an individual who is present at the entrance system 1, is approaching it or is departing from it. The object may, for instance, be an animal or an article in the vicinity of the entrance system 1, for instance brought by the aforementioned individual. Alternatively, the object may be a vehicle or a robot.

(15) FIG. 2B illustrates an embodiment of the automatic door operator 30 in more detail. As explained already in the Background section for the embodiment in FIG. 1, the automatic door operator 30 may typically be arranged as a concealed overhead installation in conjunction with a frame or other structure which supports the door members DM1 . . . DMm to move between different (e.g. closed and open) positions.

(16) In addition to the aforementioned controller 32, the automatic door operator 30 comprises a motor 34, typically an electrical motor, being connected to an internal transmission or gearbox 35. An output shaft of the transmission or gearbox 35 rotates upon activation of the motor 34 and is connected to the external linkage mechanism 40. The external linkage mechanism 40 translates the motion of the output shaft of the transmission 35 into e.g. an opening or a closing motion 50 of one or more of the door members DM1 . . . DMm with respect to the frame or support structure.

(17) The controller 32 is arranged for performing different functions of the automatic door operator 30, possibly in different operational states of the entrance system 1, using inter alia sensor input data from the sensor units S1 . . . Sn. Hence, the controller 32 is operatively connected with the sensor units S1 . . . Sn. At least some of the different functions performable by the controller 32 have the purpose of causing desired movements 50 of the door members DM1 . . . DMm. To this end, the controller 32 has at least one control output connected to the motor 34 for controlling the actuation thereof.

(18) The controller 32 may be implemented in any known controller technology, including but not limited to microcontroller, processor (e.g. PLC, CPU, DSP), FPGA, ASIC or any other suitable digital and/or analog circuitry capable of performing the intended functionality.

(19) The controller 32 also has an associated memory 33. The memory 33 may be implemented in any known memory technology, including but not limited to E(E)PROM, S(D)RAM or flash memory. In some embodiments, the memory 33 may be integrated with or internal to the controller 32. The memory 33 may store program instructions for execution by the controller 32, as well as temporary and permanent data used by the controller 32.

(20) In the embodiment shown in FIG. 2B, the entrance system 1 has a communication bus 37. Some or all of the plurality of sensor units S1 . . . Sn are connected to the communication bus 37, and so is the controller 32 and the memory 33 of the automatic door operator 30. In other embodiments, other devices or components of the automatic door operator 30 may be connected to the communication bus 37. In still other embodiments, the outputs of the sensor units S1 . . . Sn may be directly connected to respective data inputs of the controller 32.

(21) At least one of the sensor units S1 . . . Sn is a sensor unit for monitoring a zone (volume) at or near the door leaf of a movable door member for presence or activity of a person or object. In the forthcoming description, the first sensor unit S1 is exemplified as being such a sensor unit; the description may however be equally applicable also to the other sensor units S2 . . . Sn in different embodiments. The abilities of the first sensor unit S1 are used in a novel and inventive way pursuant to the invention for configuring the entrance system 1. An embodiment of the first sensor unit S1 is shown and described as sensor unit 300 in FIG. 3, and furthermore it may (but does not have to) be the same as the sensor unit S1 in the entrance system previously described for FIG. 1.

(22) As seen in FIG. 3, the sensor unit 300 comprises sensor functionality 310 enabling the sensor unit 300 to monitor the zone at or near the door leaf of the movable door member for presence or activity of a person or object. The sensor functionality 310 includes an image sensor function 312 and a distance sensor function 314.

(23) The image sensor function 312 is capable of capturing images of persons or objects appearing in or at the monitored zone. The image sensor function 312 may, for instance and without limitation, be a semiconductor charge-coupled device (CCD), an active pixel sensor in complementary metal-oxide-semiconductor (CMOS) technology, or an active pixel sensor in N-type metal-oxide-semiconductor (NMOS, Live MOS) technology.

(24) The distance sensor function 314 is capable of measuring distances to persons or objects appearing in or at the monitored zone. The distance sensor function 314 may, for instance and without limitation, be implemented in any of the following sensor technologies: optical time-of-flight, active IR, optical triangulation, light curtain, stereoscopic camera, ultrasound echo, laser, and microwave radar.

(25) In some embodiments, the image sensor function 312 and the distance sensor function 314 of the sensor functionality 310 may be implemented by the same physical device. Hence, the image sensor function 312 and the distance sensor function 314 are to be seen as two functions on a logical level but not necessarily on a physical level.

(26) The sensor unit 300 also comprises a memory 330, and a processing device 320 operatively connected with the sensor functionality 310 and the memory 330. The processing device 320 may, for instance and without limitation, be implemented as a microcontroller, processor (e.g. PLC, CPU, DSP), FPGA, ASIC or any other suitable digital and/or analog circuitry capable of performing the intended functionality. The memory 330 may, for instance and without limitation, be implemented in any known memory technology, including but not limited to E(E)PROM, S(D)RAM or flash memory. In some embodiments, the memory 330, or part of it, may be integrated with or internal to the processing device 320 or the sensor functionality 310.

(27) The memory 330 comprises work data and program code 332 which define the tasks of the sensor unit 300 when acting to monitor the zone (e.g. zone Z1 in FIG. 1) at or near the door leaf of the movable door member for presence or activity of a person or object, and to report detected presence or activity by a person or object in the monitored zone to the automatic door operator 30. To this end, the sensor unit 300 has an interface 315, for instance an interface for connecting to and communicating on the communication bus 37, or a direct electrical interface for connecting to a data input of the controller 32 of the automatic door operator 30, depending on implementation.

(28) As previously explained, for operational reliability, the sensor unit 300 will need to be configured on site. Accordingly, the memory 330 is arranged for storing settings 340 for the sensor unit 300. As can be seen in FIG. 3, the settings 340 may include different values or parameters FW, FH, 342. Additionally, the memory 330 may be arranged for storing a plurality of functions 350, which may include a learning mode 352, one or more setting schemes 354, a reset function 356, etc.

(29) A novel and inventive configuration method for the entrance system 1 is made possible thanks to the invention according to the following. This configuration method involves the sensor unit 300 in FIG. 3 and is outlined as seen at 700 in FIG. 7A, and accordingly FIG. 7 will be referred to below in parallel to FIG. 3 in the following description. Also, exemplifying reference will be made to FIGS. 4A-D, in which sensor unit 300 is embodied as sensor unit S1.

(30) Starting with FIG. 4A, the sensor unit S1 is shown in its operational position on the door leaf 12 of a door member 10, being mounted at or near the second vertical edge 14S of the door leaf 12. As already discussed, the sensor unit S1 will be monitoring a zone or volume Z1 at or near the door leaf 12 of the movable door member 10 for presence or activity of a person or object. The door member 10 may, for instance, be the swing door 10 in the entrance system 1 in FIG. 1.

(31) As is illustrated in FIG. 4B, a technician 2 (or other person) may bring an external object 380 to the first vertical edge 14L of the door leaf 12. The external object 380 is an object which carries or provides a machine-readable optical code 360, such as a piece of paper on which the optical code is printed, or a portable computing device having a display for presenting the machine-readable optical code 360.

(32) In some embodiments, the machine-readable optical code 360 is a two-dimensional barcode. More specifically, as is the case in the disclosed embodiments, the machine-readable optical code 360 is a QR (Quick Response) code. In other embodiments, the machine-readable optical code 360 may be a one-dimensional barcode, such as a UPC (Universal Product Code) or EAN (European Article Number/International Article Number) code. Other alternatives may also exist, as would be clear to the skilled person. For instance, the optical code 360 may be a machine-readable three-dimensional barcode. Such a three-dimensional barcode may, for instance, be provided by means of a 3D printer to produce a code structure in three physical (spatial) dimensions. Alternatively, a machine-readable three-dimensional barcode may be provided as a two-dimensional barcode having a third dimension in the form of, color or other additional machine-readable information. The invention is not limited to usage of any specific kind of machine-readable optical code exclusively.

(33) Since the sensor unit 300/S1 is operational to monitor the zone Z1, images of the zone Z1 and its surroundings will be captured on a regular basis. Accordingly, the sensor unit 300/S1 is designed for capturing an image of the external object 380 appearing at the first vertical edge 14L of the door leaf 12 (see, for instance, FIGS. 1 and 4B). This corresponds to step 710 in FIG. 7A and will be done by the image sensor function 312 of the sensor functionality 310 in the sensor unit 300/S1.

(34) The sensor unit 300/S1 is moreover designed for processing the captured image to identify the optical code 360, and to recognize a learning mode trigger instruction 370 encoded in the optical code 360. This corresponds to step 720 in FIG. 7A and will be handled by the processing device 320 in the sensor unit 300/S1.

(35) Triggered by the recognizing of the learning mode trigger instruction 370, the sensor unit 300/S1 is designed for automatically entering into the learning mode 352 of the sensor unit 300. This corresponds to step 730 in FIG. 7A and will be handled by the processing device 320 in the sensor unit 300/S1. The processing device 320 will read and execute, or otherwise invoke, the learning mode function 352 which is stored in the memory 330.

(36) In the learning mode 352, which was entered when triggered by the recognizing of the learning mode trigger instruction 370, the sensor unit 300/S1 is designed for automatically measuring a distance D1 between the sensor unit 300/S1 and the external object 380 at the first vertical edge 14L of the door leaf 12. This can be seen in FIG. 4C and will be done by the distance sensor function 314 of the sensor functionality 310 in the sensor unit 300/S1.

(37) The sensor unit 300/S1 is designed for setting a field width parameter value FW of the sensor unit 300/S1 based on the measured distance D1. This will be handled by the processing device 320 in the sensor unit 300/S1. The processing device 320 will set the field width parameter value FW in the settings 340 which are stored in the memory 330. This functionality corresponds to step 740 in FIG. 7A.

(38) Hence, a way of configuring an entrance system has been achieved, which requires substantially less manual labour than in the prior art. The only manual intervention required is for the technician to bring the external object 380 with the machine-readable optical code 360 to the first vertical edge 14L of the door leaf 12. The rest of the configuration activities will follow automatically, triggered by the recognition by the sensor unit 300/S1 of the learning mode trigger instruction 370 in the optical code 360; no further manual intervention is required.

(39) Accordingly, the risk of accidents in conjunction with the configuration will be substantially reduced, since no activities of removing a hood from a concealed overhead installation and manually performing a power-on reset, followed by the covering of the sensor unit S1 or pressing of a button, will be required.

(40) Also, the time of configuration will be substantially reduced, for the benefit of users wanting to enter or exit through the entrance system 1.

(41) In an advantageous embodiment, the sensor unit 300/S1 is further designed for the following. In the learning mode 352, as entered when triggered by the recognizing of the learning mode trigger instruction 370, the sensor unit 300/S1 will automatically measure a second distance D2 between the sensor unit 300/S1 and floor level FL. This can be seen in FIG. 4D and will be done by the distance sensor function 314 of the sensor functionality 310 in the sensor unit 300/S1.

(42) The sensor unit 300/S1 is designed for setting a field height parameter value FH of the sensor unit 300/S1 based on the measured second distance D2. This will be handled by the processing device 320 in the sensor unit 300/S1. The processing device 320 will set the field height parameter value FH in the settings 340 which are stored in the memory 330. This functionality corresponds to step 750 in FIG. 7B, being optional but advantageous.

(43) In this or another advantageous embodiment, the sensor unit 300/S1 is further designed for the following. In the learning mode 352, as entered when triggered by the recognizing of the learning mode trigger instruction 370, the sensor unit 300/S1 will automatically control the automatic door operator 30 to cause a full movement of the door member 10/DM1 . . . DMm from a first end position (such as a closed position) to a second end position (such as an open position), and back to the first end position (e.g. the closed position) if applicable.

(44) While doing this, the sensor unit 300/S1 will record the monitored zone Z1 at or near the door leaf 12 to generate a default representation of the monitored zone Z1 in the absence of a person or object. This will be handled by the processing device 320 together with the sensor functionality 310 in the sensor unit 300/S1. This functionality corresponds to step 760 in FIG. 7B, being optional but advantageous.

(45) One or more alternative embodiments are particularly beneficial for an entrance system which comprises one or more other sensor units S2 . . . Sn in addition to the sensor unit 300/S1. The sensor unit 300/S1 is designed for processing the captured image to derive a remote configuration instruction 372 encoded in the optical code 360, wherein the remote configuration instruction 372 pertains to configuration of at least one of the other sensor units S2 . . . Sn. The sensor unit 300/S1 is further designed for enabling execution of the derived remote configuration instruction 372 by the at least one of the other sensor units S2 . . . Sn. This functionality is illustrated in steps 770 and 775 of FIG. 7C, being optional but advantageous.

(46) In another alternative embodiment, the sensor unit 300/S1 is designed for processing the captured image to derive a remote configuration instruction 372 encoded in the optical code 360, wherein the remote configuration instruction 372 pertains to configuration of the automatic door operator 30. The sensor unit 300/S1 is further designed for enabling execution of the derived remote configuration instruction 372 by the automatic door operator 30. This functionality is illustrated in steps 780 and 785 of FIG. 7D, being optional but advantageous.

(47) In the alternative embodiments of FIGS. 7C and 7D, the processing device 320 of the sensor unit 300/S1 may advantageously be arranged for executing the remote configuration instruction 372 by transmitting the derived remote configuration instruction in a broadcast message on the communication bus 37. The broadcast message will thus be receivable by any device connected to the communication bus 37, including the other sensor units S2 . . . Sn and the automatic door operator 30. Each receiving device may then decide whether the broadcasted remote configuration instruction applies to it, and if so execute the remote configuration instruction.

(48) Alternatively, the processing device 320 of the sensor unit 300 may be arranged for executing the derived remote configuration instruction 372 by identifying a recipient device indicated by the remote configuration instruction 372, wherein the recipient device is the aforementioned at least one of the other sensor units S2 . . . Sn or the automatic door operator 30, and then transmitting the derived remote configuration instruction 372 in a message on the communication bus 37. In this case the message will hence be addressed to the recipient device specifically.

(49) It is to be noticed that all these alternative embodiments will allow extended automatic configurability of the entrance system 1 without any further manual intervention by the technician 2.

(50) Two further exemplifying embodiments of the entrance system 1 will now be described with reference to FIGS. 5 and 6.

(51) An embodiment of an entrance system in the form of a swing door system 510 is shown in a schematic top view in FIG. 5. The swing door system 510 comprises a single swing door DM1 being located between a lateral edge of a first wall 560 and an inner surface of a second wall 562 which is perpendicular to the first wall 560. The swing door DM1 is supported for pivotal movement 550 around pivot points on or near the inner surface of the second wall 562. The first and second walls 560 and 562 are spaced apart; in between them an opening is formed which the swing door DM1 either blocks (when the swing door is in closed position), or makes accessible for passage (when the swing door is in open position). An automatic door operator (not seen in FIG. 5 but referred to as 30 in the preceding figures and description) causes the movement 550 of the swing door DM1.

(52) The swing door system 510 comprises a plurality of sensor units, each monitoring a respective zone Z1-Z4. The sensor units themselves are not shown in FIG. 5, but they are generally mounted at or near ceiling level and/or at positions which allow them to monitor their respective zones Z1-Z4. Again, each sensor unit will be referred to as Sx in the following, where x is the same number as in the zone Zx it monitors (Sx=S1-S4, Zx=Z1-Z4).

(53) A first sensor unit S1 is mounted at a first central positon in FIG. 5 to monitor zone Z1. The first sensor unit S1 is a door presence sensor, and the purpose is to detect when a person or object occupies a space near a first side of the (door leaf of the) swing door DM1 when the swing door DM1 is being moved towards the open position during an opening state of the swing door system 510. The provision of the door presence sensor S1 will help avoiding a risk that the person or object will be hit by the first side of the swing door DM1 and/or be jammed between the first side of the swing door DM1 and the second wall 562; a sensor detection in this situation will trigger abort and preferably reversal of the ongoing opening movement of the swing door D1.

(54) A second sensor unit S2 is mounted at a second central positon in FIG. 5 to monitor zone Z2. The second sensor unit S2 is a door presence sensor, just like the first sensor S1, and has the corresponding purpose i.e. to detect when a person or object occupies a space near a second side of the swing door DM1 (the opposite side of the door leaf of the swing door DM1) when the swing door DM1 is being moved towards the closed position during a closing state of the swing door system 510. Hence, the provision of the door presence sensor S2 will help avoiding a risk that the person or object will be hit by the second side of the swing door DM1 and/or be jammed between the second side of the swing door D1 and the first wall 560; a sensor detection in this situation will trigger abort and preferably reversal of the ongoing closing movement of the swing door DM1.

(55) Advantageously, at least one of the door presence sensors S1 and S2 is an sensor unit which may be configured as described herein (thus implementing the sensor unit 300 according to the description above). Otherwise, they may for instance be active IR (infrared) sensors.

(56) A third sensor unit S3 is mounted at an inner central positon in FIG. 5 to monitor zone Z3. The third sensor unit S3 is an inner activity sensor, and the purpose is to detect when a person or object approaches the swing door system 510 from the inside of the premises. The provision of the inner activity sensor S3 will trigger the sliding door system 510, when being in a closed state or a closing state, to automatically switch to an opening state for opening the swing door DM1, and then make another switch to an open state when the swing door DM1 has reached its fully open position.

(57) A fourth sensor unit S4 is mounted at an outer central positon in FIG. 5 to monitor zone Z4. The fourth sensor unit S4 is an outer activity sensor, and the purpose is to detect when a person or object approaches the swing door system 510 from the outside of the premises. Similar to the inner activity sensor S3, the provision of the outer activity sensor S4 will trigger the swing door system 510, when being in its closed state or its closing state, to automatically switch to the opening state for opening the swing door DM1, and then make another switch to an open state when the swing door DM1 has reached its fully open position.

(58) The inner activity sensor S3 and the outer activity sensor S4 may for instance be radar (microwave) sensors; however one or both of them may alternatively be a sensor unit as previously described herein (thus implementing the sensor unit 300 according to the description above). Alternatively, they may be configured by way of a remote configuration instruction as described herein.

(59) An embodiment of an entrance system in the form of a revolving door system 610 is shown in a schematic top view in FIG. 6. The revolving door system 610 comprises a plurality of revolving doors or wings DM1-DM4 being located in a cross configuration in an essentially cylindrical space between first and second curved wall portions 662 and 666 which, in turn, are spaced apart and located between third and fourth wall portions 660 and 664. The revolving doors DM1-DM4 are supported for rotational movement 650 in the cylindrical space between the first and second curved wall portions 662 and 666. During the rotation of the revolving doors DM1-DM4, they will alternatingly prevent and allow passage through the cylindrical space. An automatic door operator (not seen in FIG. 6 but referred to as 30 in FIGS. 1 and 2) causes the rotational movement 650 of the revolving doors DM1-DM4.

(60) The revolving door system 610 comprises a plurality of sensor units, each monitoring a respective zone Z1-Z8. The sensor units themselves are not shown in FIG. 6, but they are generally mounted at or near ceiling level and/or at positions which allow them to monitor their respective zones Z1-Z8. Again, each sensor unit will be referred to as Sx in the following, where x is the same number as in the zone Zx it monitors (Sx=S1-S8, Zx=Z1-Z8).

(61) First to fourth sensor units S1-S4 are mounted at respective first to fourth central positons in FIG. 6 to monitor zones Z1-Z4. The first to fourth sensor units S1-S4 are door presence sensors, and the purpose is to detect when a person or object occupies a respective space (sub-zone of Z1-Z4) near one side of the (door leaf of the) respective revolving door DM1-DM4 as it is being rotationally moved during a rotation state or start rotation state of the revolving door system 610. The provision of the door presence sensors S1-S4 will help avoiding a risk that the person or object will be hit by the approaching side of the respective revolving door DM1-DM4 and/or be jammed between the approaching side of the respective revolving door DM1-DM4 and end portions of the first or second curved wall portions 662 and 666. When any of the door presence sensors S1-S4 detects such a situation, it will trigger abort and possibly reversal of the ongoing rotational movement 650 of the revolving doors DM1-DM4.

(62) Advantageously, at least one of the door presence sensors S1-S4 is an sensor unit which may be configured as described herein (thus implementing the sensor unit 300 according to the description above). Otherwise, they may for instance be active IR (infrared) sensors.

(63) A fifth sensor unit S5 is mounted at an inner non-central positon in FIG. 6 to monitor zone Z5. The fifth sensor unit S5 is an inner activity sensor, and the purpose is to detect when a person or object approaches the revolving door system 610 from the inside of the premises. The provision of the inner activity sensor S5 will trigger the revolving door system 610, when being in a no rotation state or an end rotation state, to automatically switch to a start rotation state to begin rotating the revolving doors DM1-DM4, and then make another switch to a rotation state when the revolving doors DM1-DM4 have reached full rotational speed.

(64) A sixth sensor unit S6 is mounted at an outer non-central positon in FIG. 6 to monitor zone Z6. The sixth sensor unit S6 is an outer activity sensor, and the purpose is to detect when a person or object approaches the revolving door system 610 from the outside of the premises. Similar to the inner activity sensor S5, the provision of the outer activity sensor S6 will trigger the revolving door system 610, when being in its no rotation state or end rotation state, to automatically switch to the start rotation state to begin rotating the revolving doors DM1-DM4, and then make another switch to the rotation state when the revolving doors DM1-DM4 have reached full rotational speed.

(65) The inner activity sensor S5 and the outer activity sensor S6 may for instance be radar (microwave) sensors and may advantageously be configured by way of a remote configuration instruction as described herein.

(66) Seventh and eighth sensor units S7 and S8 are mounted near the ends of the first or second curved wall portions 662 and 666 to monitor zones Z7 and Z8. The seventh and eighth sensor units S7 and S8 are vertical presence sensors. The provision of these sensor units S7 and S8 will help avoiding a risk that the person or object will be jammed between the approaching side of the respective revolving door DM1-DM4 and an end portion of the first or second curved wall portions 662 and 666 during the start rotation state and the rotation state of the revolving door system 610. When any of the vertical presence sensors S7-S8 detects such a situation, it will trigger abort and possibly reversal of the ongoing rotational movement 650 of the revolving doors DM1-DM4.

(67) The vertical presence sensors S7-S8 may for instance be active IR (infrared) sensors and may advantageously be configured by way of a remote configuration instruction as described herein.

(68) The invention has been described above in detail with reference to embodiments thereof. However, as is readily understood by those skilled in the art, other embodiments are equally possible within the scope of the present invention, as defined by the appended claims. It is recalled that the invention may generally be applied in or to an entrance system having one or more movable door member not limited to any specific type. The or each such door member may, for instance, be a swing door member, a revolving door member, a sliding door member, an overhead sectional door member, a horizontal folding door member or a pull-up (vertical lifting) door member.