METHOD FOR CONFIGURING A TYRE PRESSURE SENSOR

Abstract

Method for the configuration of a tyre pressure sensor (10) for a vehicle (100), comprising the following steps: production of a data communication connection (20) between a mobile radio device (30) and a tyre pressure sensor (10), selection of at least one specific sensor parameter (40) for the vehicle (100) via a mobile radio device (30), activation of the at least one selected sensor parameter (40) in the tyre pressure sensor (10).

Claims

1. A method for the configuration of a tyre pressure sensor for a vehicle, comprising the following steps: production of a data communication connection between a mobile radio device and a tyre pressure sensor, selection of at least one specific sensor parameter for the vehicle via a mobile radio device, activation of the at least one selected sensor parameter in the tyre pressure sensor.

2. The method according to claim 1, wherein the data communication connection is established as a wireless connection.

3. The method according to claim 1, wherein the data communication connection is established in a direct manner with the tyre pressure sensor.

4. The method according claim 1, wherein the data communication connection is established in an indirect manner via a control device of the vehicle.

5. The method according to claim 1, wherein the selection of at least one sensor parameter specific for the vehicle from a memory unit of the tyre pressure sensor occurs.

6. The method according to claim 1, wherein the selection of the at least one sensor parameter specific for the vehicle occurs from a database in which the respective sensor parameter is saved.

7. The method according to claim 1, wherein the selection of at least two sensor parameters specific for the vehicle occurs commonly via a selection of the vehicle.

8. The method according to claim 1, wherein the method steps of the establishment of the data communication connection, the selection of at least one sensor parameter and the activation of the at least one selected sensor parameter occurs after mounting of the tyre pressure sensor on a wheel rim.

9. The method according to claim 1, wherein the data communication connection between the mobile radio device and at least two tyre pressure sensors of different wheels of a vehicle is generated for a common configuration of these tyre pressure sensors.

10. The method according to claim 1, wherein the tyre pressure sensor is selected for this method by scanning of a coding.

11. The method according claim 1, wherein the data communication connection is configured between the LF-Interface of the mobile radio device and the LF-Counter-Interface of the tyre pressure sensors wherein the data communication connection is performed particularly in a frequency range between 100 kHz and 140 kHz, preferably in a frequency range between 120 kHz and 135 kHz.

12. A computer programme product for a configuration of a mobile radio device and saved on a machine readable medium, comprising: machine readable programme means which arrange the processing unit to generate a data communication connection between a mobile radio device and the tyre pressure sensor, machine readable programme means which arrange a processing unit to select at least one sensor parameter specific for the vehicle via the mobile radio device, machine readable programme means which arrange the processing unit to activate at least one selected sensor parameter in the tyre pressure sensor.

13. The computer programme product according to claim 12, wherein the machine readable programme means are intended for the configuration of the steps of the inventive method.

14. The method according to claim 2, wherein the data communication connection is established on basis of at least one of the following radio standards: WLAN Bluetooth NFC (near field communication) LF-Communication.

15. The method according to claim 5, wherein the selection occurs from predefined sensor parameters.

16. The method according to claim 6, wherein the respective sensor parameter is saved in correlation to the respective vehicle.

17. The method according to claim 7, wherein the selection occurs commonly via a selection of a vehicle database.

18. The method according to claim 9, wherein the data communication connection is generated for a common configuration of all wheels of the vehicle.

19. The method according to claim 10, wherein the tyre pressure sensor is selected via a scan device of the mobile radio device.

20. The method according to claim 11, wherein the data communication connection is performed in a frequency range between 100 kHz and 140 kHz, preferably in a frequency range between 120 kHz and 135 kHz.

Description

[0115] Further advantages, features and details of the invention result from the subsequent description in which embodiments of the invention are described in detail with relation to the drawings. Thereby, the features described in the claims and in the description can be essential for the invention each single for themselves or in any combination. It is shown schematically:

[0116] FIG. 1 an embodiment of a method according to the invention at a vehicle,

[0117] FIG. 2 an embodiment of a method, according to the invention, at a vehicle,

[0118] FIG. 3 a possibility of a selection step,

[0119] FIG. 4 a further possibility of a selection step,

[0120] FIG. 5 a further possibility of a selection step,

[0121] FIG. 6 a possible embodiment of a tyre pressure sensor for a method according to the invention and

[0122] FIG. 7 a block diagram of the system according to the invention.

[0123] In FIG. 1, a vehicle 100 is schematically shown with in total four wheels 120, wherein two wheels 120 can be recognised from the right side. The vehicle 100 is configured with a control device 110 which is configured for data communication via a data communication connection 20 with a tyre pressure sensor 10 of the wheels 120. In order to perform the method according to the invention a data communication connection 20 to the control device 110 is established via a corresponding radio interface 34 with the help of a mobile radio device 30, here with the help of a cell phone. Therewith, an indirect data communication connection 20 exists between the mobile radio device 30 and one, particularly at the same time all tyre pressure sensors 10. Subsequently, the method is performed in a way that a specific sensor parameter or a corresponding specific sensor parameter group for this vehicle 100 is selected and is activated for these tyre pressure sensors. The activation occurs particularly via a transmission from a memory of the mobile radio device 30 via the data communication connection 20 in the tyre pressure sensors 10. Alternatively, an activation in form of setting a tag is possible within a memory device of the tyre pressure sensors 10.

[0124] FIG. 2 shows another embodiment of the method of FIG. 1. Here a control device 110 is not necessary within the vehicle 100. Rather, in a direct communication the respective data communication connection 20 can be established preferably in a parallel manner between the mobile radio device 30 and one or all tyre pressure sensors 10. The further method steps proceed as already described related to FIG. 1.

[0125] In FIG. 3, a possibility is shown how on a mobile radio device 30, here in form of a table PC or a cell phone, a selection step can be performed. Thus, on a display 36 as a display device of the mobile radio device 30, particularly with touch functionality, a database 42 with a plurality of possible sensor parameters is shown. For the first sensor parameter, here two different values A1 and A2 for the sensor parameter A are indicated. These can be selected and subsequently assigned via a data communication connection 20 to the respective tyre pressure sensor 10. Besides the radio interface 34, the embodiment of the mobile radio device 30 comprises additionally a scan device 32 in form of a camera. This scan device 32 is able to recognise a coding 11, as for example shown in FIG. 6. Therewith, the coupling for the data communication device 20 is enabled in a simple and fast manner.

[0126] FIG. 4 schematically shows an alternative embodiment of a selection step. Here, a vehicle database 44 is shown on the display 36 of the mobile radio device 30. For a plurality of different vehicle types F1 to F4, a group of single sensor parameters with corresponding direct values A1, B1, A2 and B2 for the sensor parameters is shown respectively. The user only has to select the group of sensor parameters for the selection step by use of the information of the respective vehicle type F1 to F4 in order to perform the selection step of the configuration particularly fast and securely.

[0127] FIG. 5 shows a possibility of a mainly free configuration of the sensor parameter A to E which is here equipped with an input field for the free input of values. These three possibilities of FIGS. 3 to 5 can naturally also be provided separately or can be combined with one another.

[0128] A method according to the invention is particularly performed for a tyre pressure sensor 10, as for example shown in FIG. 6. Here, already a combination with a valve 19 is performed. The tyre pressure sensor 10 thereby comprises the sensor element 18 for the recognition of the tyre pressure. Further, a processing unit 14 is intended which is in a data communication connection with a memory unit 12. Using a radio interface 16, the data communication connection 20 can be generated. In the memory unit 12, already pre-selected or pre-selectable sensor parameters can be saved. Further, it is possible that for the activation of the specific sensor parameter after a transmission via a data communication connection 20, this activation is shown or at least partially shown in the storage in this memory unit 12.

[0129] The previous description of the embodiments shows the present invention only within the scope of examples. Naturally, single features of the embodiments as far as technically meaningful can be freely combined with one another without leaving the scope of the present invention.

[0130] The system according to FIG. 7 comprises at least one tyre pressure control unit 1 with an integrated circuit 2 in which among others a pressure sensor 3 for measuring the tyre pressure, a control evaluation switch 4 and a first memory 5 are configured. Besides the integrated circuit 2, an additional memory 6 occurs in the tyre pressure control unit 1, for example, an EPROM. The additional memory 6 comprises a wire connection 7 with the integrated circuit 2. The data traffic between the integrated circuit 2 and the additional memory 6 occurs encrypted.

[0131] The integrated circuit 2 controls a first transmitter 8 which, for example, sends with the frequency of 433 MHz intended for tyre pressure control systems. The transmitter transmits data, particularly the tyre pressure and deducted sizes, an identification and possibly further data provided by an integrated circuit 2 via radio to a receiver 9 intended outside the tyre pressure control unit 1 which is assembled at a suitable position in a vehicle or at the lower side of a vehicle at which a wheel is mounted which is configured with the tyre pressure control unit 1. A second receiver 210 is intended in the tyre pressure control unit 1; it should receive at a frequency which is different to the frequency, with which the first transmitter 8 sends, particularly lower than the frequency of the transmitter 8. It is preferred when the second receiver is coordinated on a frequency of 125 kHz. A battery 211 provides the necessary energy for the operation of parts of the tyre pressure control unit 1.

[0132] In the memories 5 and 6 of the tyre pressure control unit 1, a basic software is integrated ex works which is completed or altered by overwriting of predefined programme parameters by transmission of a few programme parameters of not more than 20 to 30 byte to a full version of the operation software for the tyre pressure control unit 1 for the selected vehicle type. In order to transmit these few programme parameters in the tyre pressure control unit 1; for example, a smartphone 212 is provided which comprises a wire-related interface 13 via which digital data can be expended. At this interface, a module 214 can be docked which comprises a second transmitter 15 whose sending frequency is adjusted to the frequency of the second receiver 210, provided in the tyre pressure control unit 1. Further, in the module 214 a control switch 216 is provided, for example a microcontroller which receives data via the interface 13 which is transmitted into the tyre pressure control unit 1 with the second transmitter 15. These data comprise programme parameters which can be selected with a software-related display 17 of the keyboard 218 displayed on the smartphone 212 and can be retrieved or put into a memory in order to supplement the basic software already saved in the tyre pressure control unit 1 for the full version of the operating software for the tyre pressure control unit 1 for the desired vehicle type.

[0133] The smartphone 212 can further be used in order to retrieve data from the tyre pressure control unit 1, for example the present tyre pressure.

REFERENCE LIST

[0134] 1 tyre pressure control unit [0135] 2 integrated circuit [0136] 3 pressure sensor [0137] 4 control evaluation switch [0138] 5 first memory [0139] 6 additional memory [0140] 7 wire connection [0141] 8 first transmitter [0142] 9 first receiver [0143] 210 second receiver [0144] 211 battery, power source [0145] 212 smartphone, mobile phone [0146] 13 wire-related interface [0147] 214 module, assembly unit [0148] 15 second transmitter [0149] 216 control switch [0150] 17 display [0151] 218 keyboard [0152] 10 tyre pressure sensor [0153] 11 coding [0154] 12 memory unit [0155] 14 processing unit [0156] 16 radio interface [0157] 18 sensor element [0158] 19 valve [0159] 20 data communication connection [0160] 30 mobile radio device [0161] 32 scan device [0162] 34 radio interface [0163] 36 display [0164] 40 sensor parameter [0165] 42 database [0166] 44 vehicle database [0167] 100 vehicle [0168] 110 control device [0169] 120 wheel [0170] A first sensor parameter [0171] An values for the first sensor parameter [0172] B second sensor parameter [0173] Bn values for the second sensor parameter [0174] C-E additional sensor parameters [0175] Fn vehicle type