CN101165997A - Dynamic tyre pressure monitoring auxiliary engine and dynamic tyre pressure monitoring bridge - Google Patents
Dynamic tyre pressure monitoring auxiliary engine and dynamic tyre pressure monitoring bridge Download PDFInfo
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- CN101165997A CN101165997A CNA2007101338797A CN200710133879A CN101165997A CN 101165997 A CN101165997 A CN 101165997A CN A2007101338797 A CNA2007101338797 A CN A2007101338797A CN 200710133879 A CN200710133879 A CN 200710133879A CN 101165997 A CN101165997 A CN 101165997A
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Abstract
This invention relates to a sub machine for monitoring pressure of vehicle tyres dynamically, in which, a tyre pressure sensor is set on a tyre characterizing in setting a circuit for monitoring microprocessor, a radio data communication circuit and a micro inertial generator, which supplies to the tyre pressure sensor, the circuit for monitoring microprocessor and the radio data communication circuit, the output of the sensor is connected with the circuit for monitoring microprocessor and all of which form an integrative micro-mechanical device in a shell to constitute a sub-machine of tyre pressure monitor installed in the central part of a wheel hub, and output of the communication circuit is transmitted to a vehicle carried host via the communication circuit and a network bridge set with radio communication chips and DCPL-Bus circuit.
Description
Technical field
The present invention relates to a kind of safety device of vehicle, be specifically related to a kind of dynamic vehicle tyre pressure monitoring auxiliary engine, and be connected the dynamic vehicle tyre pressure monitoring bridge that uses with it.
Background technology
Tire is the critical component that automobilism needs, and the tire fault that occurs in car running process will very likely cause serious traffic accident.In the process of running at high speed of automobile, tire fault is that all drivers worry and the most difficult prevention the most, also is the main cause that sudden traffic accident takes place.According to statistics, the traffic accident that takes place on Chinese highway has 70% owing to blow out and cause, in this ratio of the U.S. then up to 80%.How to prevent that tire pressure is in abnormal scope even blows out, and has become a major issue of safe driving.According to the analysis expert at national rubber tyre quality monitoring center, the tyre pressure that maintains the standard and in time find that tire gas leakage is to prevent the key of blowing out.And the optimal instrument that system for monitoring pressure in tyre (being called for short TPMS-Tire Pressure Monitoring System) is realized this goal beyond doubt.
The pressure monitoring system of car tyre TPMS of prior art is made up of the device for monitoring tyre pressure and the vehicle-mounted tire information main frame two large divisions that are installed in the tire.And the device for monitoring tyre pressure of installing in the tire is a kind of tire pressure monitoring circuit module, no self-generating device.So the device for monitoring tyre pressure that is installed in the tire need be powered by special miniature lithium battery, and the life-span of miniature lithium battery and reliability greatly reduce the reliability of whole monitoring system; It is very difficult to take off tire replacing miniature lithium battery.Because the change in location of device for monitoring tyre pressure according to wheel rotation cylindrical path synchronism is installed in the tire, so cause device for monitoring tyre pressure to bear the influence of centrifugal acceleration, tire pressure measurement accuracy not high level error is bigger simultaneously.
" the pressure monitoring system of car tyre TPMS " of prior art forms structure, referring to shown in Figure 1.
Summary of the invention
At the problems referred to above of prior art, the purpose of this invention is to provide a kind of dynamic vehicle tyre pressure monitoring auxiliary engine, and the dynamic vehicle tyre pressure monitoring bridge that is connected by wireless network with this dynamic vehicle tyre pressure monitoring auxiliary engine; Dynamic vehicle tyre pressure monitoring auxiliary engine of the present invention, dynamic vehicle tyre pressure monitoring bridge and vehicle-mounted vehicle tyre pressure monitoring main frame constitute dynamic vehicle system for monitoring pressure in tyre (being called for short TPMS-Tire Pressure Monitoring System) by communication system, this system is the detection wheel tire pressure at any time, tyre pressure that maintains the standard and discovery tire gas leakage in time raise with tire pressure, improve the fail safe of vehicle '.The present invention will obviously improve the accuracy that tire pressure is measured, and reduce error, and eliminate the trouble of changing battery.
The technical scheme of finishing above-mentioned first invention task is: the dynamic vehicle tyre pressure monitoring auxiliary engine, on tire, be provided with tyre pressure sensor, it is characterized in that, be provided with monitoring microcontroller circuit, wireless data communication circuit and minitype inertial generator on the tire simultaneously, this minitype inertial generator is described tyre pressure sensor, monitoring microcontroller circuit and wireless data communication circuit supply; The output of described tyre pressure sensor is connected with the monitoring microcontroller circuit; The microelectromechanicdevices devices of described tyre pressure sensor, monitoring microcontroller circuit, wireless data communication circuit, being integral of minitype inertial generating set, and be assembled in the same shell, common formation tyre pressure monitoring auxiliary engine (being also referred to as the secondary machine of hub for vehicle wheel), this tyre pressure monitoring auxiliary engine is installed in the wheel hub center of wheel; The output of wireless data communication circuit wherein is transferred to on-vehicle host through wireless data communication circuit and bridge.
Wherein, described minitype inertial generator is also referred to as miniature impulse generator, its structure is: electricity generator stator coil is fixed in the secondary machine shell, and be fixed on the center of hub for vehicle wheel by this shell, rotate synchronously with hub for vehicle wheel, the rotor of generator is an inertia rotors, when the hub for vehicle wheel rotation amount of changing (as: slow down, quicken, brake), forms speed discrepancy between miniature impulse generator inertia rotors and the hub for vehicle wheel (and generator unit stator) and generates electricity.
The structure that such scheme more specifically and is more optimized is: be provided with hermetically sealed pilot chamber in the dynamic vehicle tyre pressure monitoring auxiliary engine shell; Between the shell of tire and this dynamic vehicle tyre pressure monitoring auxiliary engine, be provided with pressure guide hole, this pressure guide hole is communicated with tire with described hermetically sealed pilot chamber; It is indoor that tyre pressure sensor is arranged on hermetically sealed pilot.
The technical scheme of finishing second invention task is: the dynamic vehicle tyre pressure monitoring bridge, be provided with the microprocessor chip and the peripheral circuit device of wireless data communication, and carry out communication by wireless communication mode and tyre pressure monitoring auxiliary engine and be connected, it is characterized in that, also be provided with the DCPL-Bus bus circuit; Positive pole and negative pole (bonding) that described wireless data communication circuit is gone into automobile power source by the communication interface termination of DCPL-Bus circuit are powered, and are that positive pole and negative pole (bonding) circuit by the automobile power source shared carries out digital communication with vehicle-mounted tire information main frame simultaneously.
This dynamic vehicle tyre pressure monitoring bridge (abbreviation bridge) is a kind of circuit module, is the middle bridge-set that secondary machine of hub for vehicle wheel and vehicle-mounted tire information main frame carry out exchanges data.
Wherein said two-wire system DCPL-Bus bus is the supply line of wireless telecommunications bridge, also is wireless telecommunications bridge and vehicle-mounted tire information host data communication line.Described DCPL-Bus bus is also referred to as " DCPL bus ", is disclosed in Chinese invention patent 03132268.9: in " the DCPL fieldbus of network intelligence table measuring terminal and network prepaid bridge ".
DCPL bus among the present invention is to adopt FSK frequency modulation(FM) demodulation mode and circuit structure form.
Dynamic vehicle tyre pressure monitoring auxiliary engine of the present invention and bridge thereof, and the dynamic vehicle system for monitoring pressure in tyre that constitutes of they and on-vehicle host, be a kind of novel moving vehicle tire pressure monitoring device, dynamic vehicle tyre pressure monitoring auxiliary engine wherein abbreviates as-the secondary machine of hub for vehicle wheel.The secondary machine of this hub for vehicle wheel, wireless bridge and DCPL bus, vehicle-mounted tire information main frame four most of pressure monitoring system of car tyre TPMS that form.
What particularly point out is that the present invention is essentially different by the above-mentioned four most of pressure monitoring system of car tyre TPMS that form and the pressure monitoring system of car tyre TPMS of prior art.
Difference one: " the pressure monitoring system of car tyre TPMS " of prior art forms and is made up of the device for monitoring tyre pressure and the vehicle-mounted tire information main frame two large divisions that are installed in the tire.And the device for monitoring tyre pressure of installing in the tire is a kind of tire pressure monitoring circuit module, no self-generating device.So be installed in the device for monitoring tyre pressure in the tire, need power by special miniature lithium battery, and the life-span of miniature lithium battery and reliability reduce greatly.
Difference two: " the pressure monitoring system of car tyre TPMS " of prior art is made up of installation device for monitoring tyre pressure and vehicle-mounted tire information main frame two large divisions in the tire.So being installed in the tire, device for monitoring tyre pressure directly carries out exchanges data by wireless telecommunications and vehicle-mounted tire information main frame.Because the change in location of device for monitoring tyre pressure according to wheel rotation cylindrical path synchronism is installed in the tire, so cause device for monitoring tyre pressure to bear the influence of centrifugal acceleration, tire pressure measurement accuracy not high level error is bigger.
Difference three: the device for monitoring tyre pressure of prior art is installed in the tire, device for monitoring tyre pressure is different with the wheel position of rotation during wheel rotation, again because the car body shell is a metal, cause vehicle-mounted tire information main frame and device for monitoring tyre pressure wireless telecommunications unreliable, and need the bigger power of device for monitoring tyre pressure wireless transmission needs, reduced miniature lithium battery useful life, taking off tire, to change miniature lithium battery very difficult.Owing to above-mentioned many reasons, cause " the pressure monitoring system of car tyre TPMS " of prior art not have the subject matter of popularization and application.
In a word, the present invention has overcome the deficiencies in the prior art, detection wheel tire pressure at any time, and adjust its pressure, the tyre pressure that maintains the standard and in time find tire gas leakage, the fail safe that improves vehicle '.The present invention will obviously improve the accuracy that tire pressure is measured, and reduce error, and eliminate the trouble of changing battery.
Description of drawings
Fig. 1 is prior art " pressure monitoring system of car tyre TPMS " structural representation;
Fig. 2 is a pressure monitoring system of car tyre TPMS structural representation of the present invention;
Fig. 3-1,3-2,3-3 are the secondary machine assembly structure figure of hub for vehicle wheel of the present invention;
Fig. 4 is the secondary machine structure partial of a hub for vehicle wheel of the present invention enlarged drawing;
Fig. 5 is the secondary machine circuit schematic diagram of hub for vehicle wheel of the present invention;
Fig. 6 is a system for monitoring pressure in tyre bridge circuit schematic diagram of the present invention.
Embodiment
Wherein, miniature impulse generator inertia rotors 3 is rotated between antenna liner plate bung flange 2 and electricity generator stator coil 4, compacting ring 5.Operation principle is that antenna liner plate bung flange 2 is followed hub for vehicle wheel with electricity generator stator coil 4, compacting ring 5 by secondary machine body 1 and rotated synchronously, and miniature impulse generator inertia rotors 3 and hub for vehicle wheel are the moment of inertia energy storage by miniature impulse generator inertia rotors 3, when the hub for vehicle wheel rotation amount of changing (as: slow down, quicken, brake), form speed discrepancy between miniature impulse generator inertia rotors 3 and the hub for vehicle wheel and generate electricity.
With reference to Fig. 2, Fig. 3-1,3-2,3-3: at pilot of the present invention chamber 7, pressure guide hole 15, hub for vehicle wheel 16, be that gas pressure in the tire is introduced in the hermetically sealed pilot chamber 7 by pressure guide hole, and tire pressure monitoring circuit solder side 8 have load cell, micro-processor interface circuit and wireless transceiver circuit.
With reference to Fig. 5: the secondary machine circuit schematic diagram of hub for vehicle wheel of the present invention.
Hub for vehicle wheel of the present invention secondary machine circuit part is mainly by pressure sensor chip U1; The microprocessor chip U2 of band wireless telecommunications RF; Memory chip U3; Voltage stabilizing circuit chips W 1; Inertia generator and peripheral circuit device are formed.
At the microprocessor chip U2 of band wireless telecommunications RF of the present invention, be to select the NRF9E5 chip for use, this chip be microprocessor CPU and wireless transceiver circuit RF integrate chip.And miniature dual-mode antenna is to adopt the printing board PCB antenna.
Described pressure sensor chip U1 is to select MPXY80XX digit capacitance pressure sensor chip for use.Tested pressure signal becomes digital signal output in this chip internal conversion, is inserted the corresponding I/O port of microprocessor chip U2 of wireless telecommunications RF by CLK, DATA, SO port.
Described inertia generator is the foregoing description, with reference to Fig. 3, Fig. 4: the inertia impulse generator in described " the secondary machine of hub for vehicle wheel ".The electricity that the inertia impulse generator sends is by the ZD1 rectification; The elementary voltage stabilizing of WD1; C1, C2, R1 filtering energy storage; W1 power supply voltage stabilizing output.
The secondary machine circuit of described hub for vehicle wheel is to be welded in " the secondary machine of hub for vehicle wheel " structure on the circuit board 6.
With reference to Fig. 6: be " system for monitoring pressure in tyre " of the present invention bridge circuit schematic diagram.Bridge circuit is by DCPL-Bus IC circuit 1; The microprocessor chip IC2 of wireless telecommunications RF; And peripheral circuit device is formed.Wherein bridge circuit is to power by positive pole and negative pole (bonding) that the communication interface termination of DCPL-Bus IC circuit 1 is gone into automobile power source, and bridge and vehicle-mounted tire information main frame are that positive pole and negative pole (bonding) circuit by automobile power source carries out digital communication simultaneously.DCPL-Bus IC circuit 1 principal character is to utilize the positive pole of automobile power source and negative pole (bonding) to carry out the bridge circuit power supply, and carries out digital communication by the supply line of sharing between the bridge, vehicle-mounted tire information main frame.The microprocessor chip IC2 of wireless telecommunications RF mainly finishes with the secondary machine of hub for vehicle wheel and carries out wireless digital communication.Communication serial ports RXD, TXD are connected with communication serial ports P01, the P02 of the microprocessor chip IC2 of wireless telecommunications RF in the DCPL-Bus IC circuit 1.The power supply of 3.6V voltage stabilizing is provided in the DCPL-Bus IC circuit 1.
Claims (5)
1. dynamic vehicle tyre pressure monitoring auxiliary engine, on tire, be provided with tyre pressure sensor, it is characterized in that, be provided with monitoring microcontroller circuit, wireless data communication circuit and minitype inertial generator on the tire simultaneously, this minitype inertial generator is described tyre pressure sensor, monitoring microcontroller circuit and wireless data communication circuit supply; The output of described tyre pressure sensor is connected with the monitoring microcontroller circuit; The microelectromechanicdevices devices of described tyre pressure sensor, monitoring microcontroller circuit, wireless data communication circuit, being integral of minitype inertial generating set, and be assembled in the same shell, common formation tyre pressure monitoring auxiliary engine, this tyre pressure monitoring auxiliary engine is installed in the wheel hub center of wheel; The output of wireless data communication circuit wherein is transferred to on-vehicle host through wireless data communication circuit and bridge.
2. according to the described dynamic vehicle tyre pressure monitoring auxiliary engine of claim 1, it is characterized in that: described minitype inertial generator Structure is: electricity generator stator coil is fixed in the secondary machine shell, and be fixed on the center of hub for vehicle wheel by this shell, rotate synchronously with hub for vehicle wheel, the rotor of engine is an inertia rotors, and the speed discrepancy of utilization and wheel generates electricity.
3. according to claim 1 or 2 described dynamic vehicle tyre pressure monitoring auxiliary engines, it is characterized in that: be provided with hermetically sealed pilot chamber in the dynamic vehicle tyre pressure monitoring auxiliary engine shell; Between the shell of tire and this dynamic vehicle tyre pressure monitoring auxiliary engine, be provided with pressure guide hole, this pressure guide hole is communicated with tire with described hermetically sealed pilot chamber; It is indoor that tyre pressure sensor is arranged on hermetically sealed pilot.
4. one kind is connected the dynamic vehicle tyre pressure monitoring bridge that uses with the communication of the described dynamic vehicle tyre pressure monitoring auxiliary engine of claim 1, be provided with the microprocessor chip and the peripheral circuit device of wireless data communication, and carry out communication by wireless communication mode and tyre pressure monitoring auxiliary engine and be connected, it is characterized in that, also be provided with the DCPL-Bus bus circuit; Positive pole and negative pole that described wireless data communication circuit is gone into automobile power source by the communication interface termination of DCPL-Bus circuit are powered, and are that positive pole and negative pole circuit by the automobile power source shared carries out digital communication with vehicle-mounted tire information main frame simultaneously.
5. according to the described dynamic vehicle tyre pressure monitoring bridge of claim 4, it is characterized in that described DCPL-Bus bus circuit adopts FSK frequency modulation(FM) demodulation mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101338797A CN100568674C (en) | 2007-10-12 | 2007-10-12 | Dynamic tyre pressure monitoring auxiliary engine and dynamic tyre pressure monitoring bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101338797A CN100568674C (en) | 2007-10-12 | 2007-10-12 | Dynamic tyre pressure monitoring auxiliary engine and dynamic tyre pressure monitoring bridge |
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| Publication Number | Publication Date |
|---|---|
| CN101165997A true CN101165997A (en) | 2008-04-23 |
| CN100568674C CN100568674C (en) | 2009-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2007101338797A Expired - Fee Related CN100568674C (en) | 2007-10-12 | 2007-10-12 | Dynamic tyre pressure monitoring auxiliary engine and dynamic tyre pressure monitoring bridge |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102099207A (en) * | 2008-09-26 | 2011-06-15 | 欧陆汽车有限责任公司 | Method, sensor, detector and system for locating at least one wheel on a vehicle |
| CN102837558A (en) * | 2012-08-06 | 2012-12-26 | 伍国伟 | Car wheel hub with intelligent tire detection device |
| US9181834B2 (en) | 2008-12-10 | 2015-11-10 | Continental Automotive Gmbh | Method and device for adapting the injection agent supply in an injection system, and exhaust gas aftertreatment system |
| CN105720738A (en) * | 2014-09-23 | 2016-06-29 | 上海聚然智能科技有限公司 | Inertia generator |
| CN106103144A (en) * | 2014-03-17 | 2016-11-09 | 大陆汽车有限公司 | For positioning the method and apparatus of installation position in vehicle for the wheel |
| CN108099916A (en) * | 2016-11-25 | 2018-06-01 | 比亚迪股份有限公司 | A kind of method, system and vehicle for monitoring vehicle running state |
-
2007
- 2007-10-12 CN CNB2007101338797A patent/CN100568674C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102099207A (en) * | 2008-09-26 | 2011-06-15 | 欧陆汽车有限责任公司 | Method, sensor, detector and system for locating at least one wheel on a vehicle |
| CN102099207B (en) * | 2008-09-26 | 2014-06-25 | 大陆汽车有限公司 | Method, sensor, detector and system for locating at least one wheel on a vehicle |
| US9181834B2 (en) | 2008-12-10 | 2015-11-10 | Continental Automotive Gmbh | Method and device for adapting the injection agent supply in an injection system, and exhaust gas aftertreatment system |
| CN102837558A (en) * | 2012-08-06 | 2012-12-26 | 伍国伟 | Car wheel hub with intelligent tire detection device |
| CN102837558B (en) * | 2012-08-06 | 2014-09-17 | 伍国伟 | Car wheel hub with intelligent tire detection device |
| CN106103144A (en) * | 2014-03-17 | 2016-11-09 | 大陆汽车有限公司 | For positioning the method and apparatus of installation position in vehicle for the wheel |
| US10052921B2 (en) | 2014-03-17 | 2018-08-21 | Continental Automotive Gmbh | Method and arrangement for locating the installation position of wheels in a vehicle |
| CN105720738A (en) * | 2014-09-23 | 2016-06-29 | 上海聚然智能科技有限公司 | Inertia generator |
| CN108099916A (en) * | 2016-11-25 | 2018-06-01 | 比亚迪股份有限公司 | A kind of method, system and vehicle for monitoring vehicle running state |
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| Publication number | Publication date |
|---|---|
| CN100568674C (en) | 2009-12-09 |
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Owner name: NANJING ZHANGYIN IOT TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: GUO JIANGUO Effective date: 20111129 |
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Effective date of registration: 20111129 Address after: Twenty-one thousand Jiangsu Nanjing City No. 359 Hongwu Road Fuxin International Building, room 1521-1523 Patentee after: Nanjing chapter printing Internet of things Technology Co., Ltd. Address before: 210094 No. 18, No. 200, Xiaolingwei 105, Nanjing, Jiangsu Patentee before: Guo Jianguo |
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Granted publication date: 20091209 Termination date: 20131012 |