INDUCTIVE SENSOR MODULE FOR A VEHICLE AND METHOD FOR OPERATING SUCH A SENSOR MODULE

• US 20110068912A1
• Filed: 03/12/2010
• Published: 03/24/2011
• Est. Priority Date: 03/17/2009
• Status: Abandoned Application

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Guse, Peter, Tollkuehn, Bernd
• Application Number:
  US12/993,873
• Publication Number:
  US 20110068912A1
• Time in Patent Office: Days
• US Class Current: 340/441
• CPC Class Codes: G01D 21/00 Measuring or testing not otherwise provided for
• CPC Class Codes: G01P 1/12 Recording devices indicating working conditions of vehicles G07C5/00
• CPC Class Codes: G01P 15/09 by piezoelectric pick-up
• CPC Class Codes: G01P 3/488 delivered by variable reluctance detectors

Abstract

The invention relates to a sensor module for a vehicle safety system and to a method for actuating such a sensor module for a vehicle safety system, wherein data are wirelessly transmitted by at least one transmitter of the sensor module according to a sensor signal. The sensor module uses a generational measurement principle so that the energy for the operation of the sensor module is generated by said measurement principle. The data are stored in a memory in the sensor module, and a control device reads out said data according to at least one vehicle variable (e.g., speed) and/or event (e.g., slipping, blocking) and transmits said data.

Claims

1. A sensor module for a vehicle safety system, wherein the sensor module comprises at least one transmitter (TX) for the wireless transmission of data depending on a sensor signal, the sensor module using a measurement principle that functions as a generator, thereby generating energy to operate the sensor module, characterized in that

the sensor module includes a memory for the data, and a control unit that reads out and transmits data from the memory as a function of at least one vehicle parameter and/or one event.

2. The sensor module according to claim 1,

characterized in that

the memory is designed as a circular memory.

3. The sensor module according to claim 1,

characterized in that

the memory and the control unit are disposed on an integrated circuit.

4. The sensor module according to claim 1,

characterized in that

the vehicle parameter is the vehicle speed.

5. The sensor module according to claim 1,

characterized in that

the event is a wheel state.

6. The sensor module according to claim 1,

characterized in that

the sensor module comprises energy management with a converter that switches between a low power mode and a high power mode depending on the vehicle parameter and/or the event.

7. The sensor module according to claim 6,

characterized in that

the low power mode is provided for generating data, and the high power mode is provided for generating data and for transmission.

8. The sensor module according to claim 7,

characterized in that

the high power mode requires a higher clock rate in the sensor module.

9. The sensor module according to claim 1,

characterized in that

the measurement principle is inductive.

10. A method for operating a sensor module for a vehicle safety system, wherein data are transmitted wirelessly by at least one transmitter of the sensor module depending on a sensor signal, wherein the sensor module uses a measurement principle that functions as a generator, and therefore the energy required to operate the sensor module is generated by this measurement principle,

characterized in that

the data are stored in a memory in the sensor module, and a control unit in the sensor module reads out and transmits data from the memory as a function of at least one vehicle parameter and/or one event.