CN100462703C - Quick wireless sensor initializing system for monitoring automobile tyre pressure - Google Patents
Quick wireless sensor initializing system for monitoring automobile tyre pressure Download PDFInfo
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- CN100462703C CN100462703C CNB2005100248347A CN200510024834A CN100462703C CN 100462703 C CN100462703 C CN 100462703C CN B2005100248347 A CNB2005100248347 A CN B2005100248347A CN 200510024834 A CN200510024834 A CN 200510024834A CN 100462703 C CN100462703 C CN 100462703C
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Abstract
The fast wireless sensor initiating system to monitor vehicle tyre pressure comprises: a wireless sensor initiating part, a tyre pressure sensor, and a central receiver. Wherein, it connects in turn the switch control unit, signal generator, high-current driver, LC oscillating circuit, LF radio signal, MPU, RF circuit to send signal with ID data to the receiver, and an emission antenna. This invention is accurate and shortcut.
Description
Technical field
The present invention relates to a kind of initialization system that is used for monitoring automobile tyre pressure, particularly a kind of quick wireless sensor initializing system that is used for monitoring automobile tyre pressure.
Technical background
Tire is the important safety component of automobile.Tire will play bearing load, generation driving force and damping force, buffering, shock-absorbing, four kinds of effects of change travel direction under steam.So it is very important that tire seems in the parts of whole automobile.Rationally using tire is exactly to select its optimal load, speed and air pressure in strict accordance with the tire standards relevant regulations.This is because in the process of moving, is frequent variations along with driving conditions changes its tire pressure.Environment temperature improves, the corresponding increase of air pressure.The speed of a motor vehicle improves and running time growth continuously, and the also corresponding increase of air pressure.In case meet accident in travelling, be subjected to hard thing as the tire accident and puncture, its tire pressure is respective change also, when the hole that punctures is smaller, forms slowly and leak, especially the vacuum tire, it has good drip-preventing function, often ignores to the people, if untimely processing will cause accident.Therefore tire pressure is monitored in real time very necessary.This problem has caused people's extreme attention.The english abbreviation form of automotive tire pressure surveillance " Tire Pressure Monitoring System " is TPMS.This system utilizes to be installed in the air pressure that each pressure transducer of taking turns tyre cavity is directly measured tire, and each tire pressure is shown and monitors, and is too low or when seepage was arranged, automatic warning was understood by system when tire pressure.And at present on the TPMS after market, existing wireless sensor initializing adopts the mode of inflation of tire or tire rotation mostly, and its operation steps is numerous and diverse, and efficient is low, can not determine that fast which tire pressure is undesired.
Summary of the invention
At the defective that exists in the prior art, the invention provides a kind of quick wireless sensor initializing system that is used for monitoring automobile tyre pressure, this system applies low frequency wireless electromagnetic wave launcher is to the initialized tire pressure sensor emission of needs low frequency signal, utilize near-field effect, low frequency receiving element in the sensor detects low frequency signal, and wake microcontroller up, the signal that radio circuit by tire pressure sensor will have the ID data sends to the central receiver that receives the tire location signal, thereby determines the position of each wireless senser tire of living in.
The wireless sensor initializing system that is used for monitoring automobile tyre pressure mainly comprises: the wireless sensor initializing system part, receive the tire pressure sensor part of low-frequency electromagnetic wave signal, the central receiver that receives the tire location signal is partly formed, the wireless sensor initializing system part is by switch control unit, signal generator, high current driver, low frequency LC oscillatory circuit is formed, the tire pressure sensor part that receives the low-frequency electromagnetic wave signal is by the low frequency receiving antenna, microcontroller, radio circuit and emitting antenna and tire pressure sensor are formed.The tire pressure sensor that receives the low-frequency electromagnetic wave signal partly possesses the low frequency wake-up function, the low frequency radio signal that the low frequency receiving antenna is received is waken microcontroller up, it is characterized in that the switch control unit output terminal is connected with the signal input part of signal generator in the described wireless sensor initializing system, the output terminal of signal generator is connected with the pin of high current driver 2 input ends, high current driver adopts chip TC4421, the pin 6 of high current driver, 7 output terminals are connected with low frequency LC oscillatory circuit, low frequency LC oscillatory circuit is by the power wire-wound inductor, the resistance that electric capacity and one are used to regulate power is composed in series, and is connected with two output terminals of high current driver.Send the low frequency radio signal to the tire pressure sensor that receives the low-frequency electromagnetic wave signal behind the low frequency LC oscillatory circuit resonance, its frequency is 125kHz, the low frequency receiving antenna that receives the tire pressure sensor of low-frequency electromagnetic wave signal is connected with the input end of microcontroller, the output terminal of microcontroller is connected with the input end of radio circuit, and the output terminal of radio circuit is connected with emitting antenna.Microcontroller sends to the central receiver that receives the tire location signal by the signal that radio circuit will have the ID data.The output terminal that receives the central receiver of tire location signal is connected with the input end of display element device or pronunciation components and parts, by display element device or pronunciation components and parts each vehicle tyre data is offered operating personnel.
The utility model has the advantages that to have changed traditional initial method, can be apace with the automobile tire pressure monitoring system initialization, accurate positioning, quick.
Description of drawings
Fig. 1 quick wireless sensor initializing system partial circuit of the present invention schematic diagram
Fig. 2 initialization FB(flow block) of the present invention
1 switch control unit, 2 signal generators, 3 low frequency LC oscillatory circuits, 4 low frequency receiving antennas, 5 microcontrollers, 6 radio circuits, 7 receive the central receiver of tire location signal
Embodiment
Further specify embodiments of the invention below in conjunction with accompanying drawing:
Work by switch control unit 1 enabling signal generator 2 referring to Fig. 1, two I/O delivery outlets at signal generator 2 produce the opposite 125K square-wave signal of high-low level, insert pin 2 input ends of follow-up TC4421 high current driver respectively, electric current through TC4421 amplifies, signal is by pin 6,7 outputs, output signal is input to the two ends of low frequency LC oscillatory circuit 3, because frequency input signal is identical with the resonance frequency of LC oscillator coil, thereby cause the starting of oscillation of LC oscillator coil, outwards launch the low-frequency electromagnetic wave signal.Referring to Fig. 2, under the vehicle stationary state, the described wireless sensor initializing system that is used for monitoring automobile tyre pressure is pressed close to first acquiescence tire, enabling signal generator 2 produces the 125kHz pulse signal, 125kHz pulse signal input low frequency LC oscillatory circuit 3 produces the 125kHz low frequency signal.The low frequency receiving antenna 4 that receives the tire pressure sensor part of low-frequency electromagnetic wave signal detects the 125kHz low frequency signal, to wake microcontroller 5 work up, microcontroller 5 is by radio circuit 6 and emitting antenna, emission has the signal of the data of tire ID and gives central receiver 7, if central receiver 7 receives valid data with regard to startup sound (light) indication, alert has been finished the initialization of wireless senser in this tire.Otherwise repeat aforesaid operations and point out the initialization of having finished wireless senser in this tire up to central receiver 7.And then successively each tire of vehicle is repeated aforesaid operations according to clockwise (or counterclockwise) order of acquiescence, until the position (left front, right front, left back, right back) of determining each wireless senser tire of living in.
Claims (4)
1. quick wireless sensor initializing system that is used for monitoring automobile tyre pressure, comprise: the wireless sensor initializing system part, receive the tire pressure sensor part of low-frequency electromagnetic wave signal, receive the central receiver part of tire location signal, the wireless sensor initializing system part is by switch control unit, signal generator, high current driver, low frequency LC oscillatory circuit is formed, the tire pressure sensor part that receives the low-frequency electromagnetic wave signal is by the low frequency receiving antenna, microcontroller, radio circuit and emitting antenna and tire pressure sensor are formed, the tire pressure sensor that receives the low-frequency electromagnetic wave signal possesses the low frequency wake-up function, the low frequency radio signal that the low frequency receiving antenna is received is waken microcontroller up, it is characterized in that the switch control unit output terminal is connected with the signal input part of signal generator in the described wireless sensor initializing system, the output terminal of signal generator is connected with the input end of high current driver, the output terminal of high current driver is connected with low frequency LC oscillatory circuit, send the low frequency radio signal to the tire pressure sensor that receives the low-frequency electromagnetic wave signal behind the low frequency LC oscillatory circuit resonance, the low frequency receiving antenna that receives the tire pressure sensor of low-frequency electromagnetic wave signal is connected with the input end of microcontroller, the output terminal of microcontroller is connected with the input end of radio circuit, the output terminal of radio circuit is connected with emitting antenna, the output terminal that receives the central receiver of tire location signal is connected with the input end of display element device or pronunciation components and parts, and described microcontroller sends to the central receiver that receives the tire location signal by the signal that radio circuit will have the ID data.
2. a kind of quick wireless sensor initializing system that is used for monitoring automobile tyre pressure according to claim 1 is characterized in that described high current driver adopts chip TC4421, and its pin 2 is a signal input pin, and 6,7 is the signal output pin.
3. a kind of quick wireless sensor initializing system that is used for monitoring automobile tyre pressure according to claim 1, it is characterized in that described low frequency LC oscillatory circuit is composed in series by the resistance that power wire-wound inductor, electric capacity and one are used to regulate power, high current driver is two, one end of low frequency LC oscillatory circuit is connected with two output terminals of a high current driver, and the other end is connected with two output terminals of another high current driver.
4. a kind of quick wireless sensor initializing system that is used for monitoring automobile tyre pressure according to claim 1, the output terminal output low frequency wireless pulse signal that it is characterized in that signal generator, by the tire pressure sensor of low frequency LC oscillatory circuit emission low-frequency electromagnetic wave signal to receiving end, frequency is 125KHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100248347A CN100462703C (en) | 2005-04-01 | 2005-04-01 | Quick wireless sensor initializing system for monitoring automobile tyre pressure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100248347A CN100462703C (en) | 2005-04-01 | 2005-04-01 | Quick wireless sensor initializing system for monitoring automobile tyre pressure |
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| Publication Number | Publication Date |
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| CN1841034A CN1841034A (en) | 2006-10-04 |
| CN100462703C true CN100462703C (en) | 2009-02-18 |
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| CNB2005100248347A Active CN100462703C (en) | 2005-04-01 | 2005-04-01 | Quick wireless sensor initializing system for monitoring automobile tyre pressure |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7487671B1 (en) * | 2007-08-18 | 2009-02-10 | Silicon Valley Micro C Corp. | Tire parameter monitoring system with sensor location using magnetic fields |
| CN102401717A (en) * | 2010-09-17 | 2012-04-04 | 深圳市加力尔电子科技有限公司 | Wake-up terminal for tire pressure monitoring module |
| KR101670803B1 (en) * | 2010-11-18 | 2016-10-31 | 현대모비스 주식회사 | Apparatus for recognizing position sensor in tire pressure monitoring system and method thereof |
| CN103057360B (en) * | 2012-12-18 | 2015-07-01 | 辉创电子科技(苏州)有限公司 | Automobile tire detection device |
| CN112060843B (en) * | 2020-10-14 | 2024-06-04 | 美新半导体(天津)有限公司 | Tire pressure monitoring circuit, system and method without oscillator |
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| US5724266A (en) * | 1992-12-21 | 1998-03-03 | Sumitomo Rubber Industries, Ltd. | Automatic initialization method applied to device for detecting pneumatic abnormalities on the basis of variations in angular velocity of tire |
| JP2001080324A (en) * | 1999-09-17 | 2001-03-27 | Unisia Jecs Corp | Tire air pressure reduction detecting device |
| CN2472998Y (en) * | 2000-10-13 | 2002-01-23 | 何继星 | Electronic speech alarm for tyre leaking |
| US20020021212A1 (en) * | 2000-07-18 | 2002-02-21 | Masakazu Arita | Apparatus and method for alarming decrease in tire air-pressure |
| JP2002283818A (en) * | 2001-03-23 | 2002-10-03 | Sumitomo Rubber Ind Ltd | Alarm device and method for abnormal tire inflation pressure, and start program for initialization operation |
| CN1426910A (en) * | 2001-12-17 | 2003-07-02 | 孙锋利 | Motor vehicle tyre leackage full antomatic radio alarming apparatus |
| US20030121319A1 (en) * | 2001-02-26 | 2003-07-03 | Hiroyoshi Kojima | Apparatus for estimating a tire condition and apparatus for determining a tire abnormal condition |
| US20040046650A1 (en) * | 2002-09-06 | 2004-03-11 | Minao Yanase | Method and apparatus for detecting decrease in tire air-pressure and program for judging decompression of tire |
| CN1553867A (en) * | 2001-10-31 | 2004-12-08 | ��������ķ������ | Tire pressure monitoring system |
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|---|---|---|---|---|
| US5724266A (en) * | 1992-12-21 | 1998-03-03 | Sumitomo Rubber Industries, Ltd. | Automatic initialization method applied to device for detecting pneumatic abnormalities on the basis of variations in angular velocity of tire |
| JP2001080324A (en) * | 1999-09-17 | 2001-03-27 | Unisia Jecs Corp | Tire air pressure reduction detecting device |
| US20020021212A1 (en) * | 2000-07-18 | 2002-02-21 | Masakazu Arita | Apparatus and method for alarming decrease in tire air-pressure |
| CN2472998Y (en) * | 2000-10-13 | 2002-01-23 | 何继星 | Electronic speech alarm for tyre leaking |
| US20030121319A1 (en) * | 2001-02-26 | 2003-07-03 | Hiroyoshi Kojima | Apparatus for estimating a tire condition and apparatus for determining a tire abnormal condition |
| JP2002283818A (en) * | 2001-03-23 | 2002-10-03 | Sumitomo Rubber Ind Ltd | Alarm device and method for abnormal tire inflation pressure, and start program for initialization operation |
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| CN1841034A (en) | 2006-10-04 |
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Owner name: WUHAN FINE MEMS INC. Free format text: FORMER OWNER: FEIEN MICROELECTRONICS CO., LTD., SHANGHAI Effective date: 20130128 |
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Effective date of registration: 20130128 Address after: 14 building, 7 building, Optics Valley Pioneer Street, East Lake Development Zone, Wuhan, Hubei, 430074 Patentee after: Wuhan FineMEMS Inc. Address before: 201203. B, Room 309, block 518, blue wave road, Zhangjiang, Shanghai Patentee before: Feien Microelectronics Co., Ltd., Shanghai |