ID CODE LEARNING DEVICE AND METHOD OF LEARNING ID CODE

• US 20150054640A1
• Filed: 08/15/2014
• Published: 02/26/2015
• Est. Priority Date: 08/20/2013
• Status: Active Grant

• Current Assignee: Mobiletron Electronics Co. Ltd.
• Original Assignee: Mobiletron Electronics Co. Ltd.
• Inventors: HUANG, SHIAO-HWA, HUANG, KUAN-CHIH, CHOU, YU-LIANG
• Granted Patent: US 9,440,501 B2
• Time in Patent Office: Days
• US Class Current: 340/447
• CPC Class Codes: B60C 23/0415 Automatically identifying wheel mounted units, e.g. after replacement or exchange of wheels
• CPC Class Codes: B60C 23/0437 Means for detecting electromagnetic field changes not being part of the signal transmission per se, e.g. strength, direction, propagation or masking
• CPC Class Codes: B60C 23/0461 externally triggered, e.g. by wireless request signal, magnet or manual switch
• CPC Class Codes: B60C 23/0472 to manually allocate ID codes or mounting positions, e.g. by service technicians
• CPC Class Codes: B60C 23/0479 Communicating with external units being not part of the vehicle, e.g. tools for diagnostic, mobile phones, electronic keys or service stations

Abstract

An ID code learning device includes a RF transceiving module, a received signal strength indication (RSSI) module, and a processing circuit. The RF transceiving module receives RF signals, and each of the RF signals contains an ID code. The RSSI module is electrically connected to the RF transceiving module to detect signal strengths of the RF signals received by the RF transceiving module. The processing circuit is electrically connected to the RF transceiving module and the received signal strength indication module respectively. The received signal strength indication module detects the RF signal with the highest signal strength, the processing circuit pairs the ID code thereof with a predetermined tire location code, and then the RF transceiving module transmits a pairing result out.

Claims

1. An ID code learning device, comprising:

a RF transceiving module for receiving RF signals, wherein each of the RF signals contains an ID code;

a received signal strength indication module electrically connected to the RF transceiving module to detect signal strengths of the RF signals received by the RF transceiving module; and

a processing circuit electrically connected to the RF transceiving module and the received signal strength indication module respectively;

wherein the received signal strength indication module detects the RF signal with the highest signal strength, the processing circuit pairs the ID code thereof with a predetermined tire location code, and then the RF transceiving module transmits a pairing result out.

2. The ID code learning device of claim 1, wherein the processing circuit further pairs ID codes of the rest RF signals with tire location codes according to the signal strengths of the RF signals detected by the received signal strength indication module.

3. The ID code learning device of claim 1, further comprising a triggering module electrically connected to the processing circuit for transmitting a triggering signal to sensors, wherein the sensors generate the RF signals and transmit the RF signals to the RF transceiving module according to the triggering signal, and the ID codes of the RF signals represent the sensors.

4. The ID code learning device of claim 3, wherein the triggering signal is a low-frequency signal, and the RF signals are high-frequency signals.

5. The ID code learning device of claim 1, wherein the RF transceiving module includes a receiving circuit electrically connected to the received signal strength indication module and a transmitting circuit electrically connected to the processing circuit.

6. The ID code learning device of claim 5, further comprising a case, in which the processing circuit, the receiving circuit, the transmitting circuit, and the received signal strength indication module are received, wherein the case is provided with a conductive terminal electrically connected to the receiving circuit of the RF transceiving module.

7. The ID code learning device of claim 6, wherein the RF transceiving module further includes an antenna on an outer side of the case, and the antenna is electrically connected to the conductive terminal.

8. The ID code learning device of claim 7, wherein the RF transceiving module further includes an insulating sleeve enveloping the antenna.

9. The ID code learning device of claim 6, wherein the RF transceiving module further includes a wire outside the case, and the wire having an end electrically connected to the conductive terminal.

10. The ID code learning device of claim 9, wherein the RF transceiving module further includes a fastener connected to an end of the wire to be electrically connected to the conductive terminal through the wire.

11. A method of learning ID code with a device, comprising:

the steps of;

A. receiving RF signals, wherein each of the RF signals contains an ID code;

B. detecting signal strengths of the RF signals;

C. pairing the ID code of the RF signal with the highest signal strength with a tire location code; and

D. transmitting a pairing result of the step C out.

12. The method of claim 11, further comprising pairing the ID codes of the rest RF signals with tire location codes according to the signal strengths thereof in the step C.

13. The method of claim 11, further comprising transmitting a triggering signal to sensors before the step A, wherein the sensors generate the RF signals according to the triggering signal, and the ID codes of the RF signals represent the sensors.

14. The method of claim 13, further comprising enlarging a difference of the signal strengths between one of the RF signals and the rest RF signals for at least 10 dB before the step A.

15. The method of claim 13, further comprising moving the device to touch one of the sensors before the step A.

16. The method of claim 13, further comprising electrically connecting the device to one of the sensors before the step A.

17. The method of claim 13, further comprising putting the device at a predetermined location to make distances different between the device and each of the sensors before the step A.

18. The method of claim 13, wherein the triggering signal is a low-frequency signal and the RF signals are high-frequency signals.