CN201026788Y - Passive wireless tire pressure real time monitoring device of magnetic transducer - Google Patents
Passive wireless tire pressure real time monitoring device of magnetic transducer Download PDFInfo
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- CN201026788Y CN201026788Y CNU2007200667294U CN200720066729U CN201026788Y CN 201026788 Y CN201026788 Y CN 201026788Y CN U2007200667294 U CNU2007200667294 U CN U2007200667294U CN 200720066729 U CN200720066729 U CN 200720066729U CN 201026788 Y CN201026788 Y CN 201026788Y
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Abstract
A passive and wireless tire pressure real time detection device of magnetic sensor mainly comprises a central processing module, a electromagnetic coupling module and a tire pressure sensor module, wherein, the electromagnetic coupling module formed by an iron core, an inductance coil, a cavity body and a cover plate is arranged outside the tire, the inductance coil is winded on the iron core, the pressure sensor module formed by a cavity body, a floor, a central shaft, a spiral spring tube, a concave groove, a bar permanent magnet, an O-shaped rubber ring and a central shaft is arranged inside the tire, the inner hole of the central shaft is connected with the inner end of the spiral spring tube, the outer end of the spiral spring tube is connected with the concave groove, the permanent magnet is arranged inside the concave groove, and the top end of the central shaft passes through the O-shaped rubber ring and is embedded into a small hole of the top of the cavity body. The utility model has the advantages of free of power source supply, simple and reliable structure, long service life and strong interference immunity.
Description
Technical field
The utility model relates to a kind of vehicle tyre safety monitoring system, particularly a kind of passive and wireless tire pressure real-time monitoring device of Magnetic Sensor.
Technical background
Automobile tire pressure monitoring system is mainly used in real-time tire pressure is monitored automatically when running car, tire flat and infrabar is reported to the police, with guarantee driving safety.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 major reason that sudden traffic accident takes place.According to statistics, the traffic accident that takes place on Chinese express highway has 70% owing to blow out and cause, in this ratio of the U.S. then up to 80%.Therefore, how to prevent to blow out and become an important topic of safe driving.According to the analysis expert at national rubber tire quality surveillance center, the tyre pressure that maintains the standard travels and in time finds that tire gas leakage is to prevent the key of blowing out; And the automotive tire pressure supervisory system undoubtedly is desirable instrument.And the automotive tire pressure supervisory system can reduce it and ground-surface friction by the normal pressure that keeps tire, thereby reduces the consumption of fuel of automobile unit's mileage.
At present, automobile tire pressure monitoring system mainly is divided into two types: a kind of is the indirect type automobile tire pressure monitoring system, and its wheel speed sensors by automobile ABS comes the rotating speed difference between the comparative tire, to reach the purpose of monitoring tire pressure; Its shortcoming is that the situation that can't surpass 100 kilometers/hour to the situation and the speed of two above tires while deficencys is judged.Another kind is a direct-type automotive tyre pressure monitoring system, and its utilizes what be installed in that each takes turns tyre cavity is the air pressure that the pressure sensor of power supply is directly measured tire with the lithium ion battery, and is transmitted on the monitoring device that is installed in operator platform by wireless-modulated.Monitoring device shows each tire pressure at any time, and the driver can understand the air pressure situation of each tire intuitively, when tire pressure is too low, seepage, when too high or temperature is too high, system will auto alarm.Its shortcoming is to the service life of battery and quality very high requirement being arranged, and each tire needs the integrated circuit that wireless-modulated transmits and receives, thereby causes the cost of the system integration higher.And disposable battery also can not recycle, and therefore environment had very big pollution.
Summary of the invention
The purpose of this utility model is at the defective that exists in the prior art, and a kind of passive and wireless tire pressure real-time monitoring device of Magnetic Sensor is provided.This device adopts spring-tube type pressure-sensing device, and the changes of magnetic field of utilizing permanent magnet passes to monitoring system with the pressure information of tire.The utility model mainly comprises: central processing module, electromagnetic coupled module and tire pressure sensing module, the central data processing module is by data acquisition module, data analysis module and information display module are formed, the central data processing module utilizes the mode of time-sharing multiplex to measure the output signal of each electromagnetic coupled module respectively, it is characterized in that described electromagnetic coupled module is installed in the inboard of motor tire outside near tire, this module is by iron core, inductance coil, electromagnetic coupled module cavity and electromagnetic coupled module cavity cover plate are formed, inductance coil is wound on the iron core, iron core is installed in the electromagnetic coupled module cavity, the inductance coil of electromagnetic coupled module is that its axis of mutual inductance type coil is consistent with the magnetic direction of the bar permanent magnet of pressure sensor module, inductance coil is connected with the central data processing module by lead, pressure sensor module is installed in the tire of automobile, by cavity, base plate, center shaft, helical Bourdon tube, Baltimore groove, bar permanent magnet, O shape rubber ring and center shaft are formed, center shaft is installed in the central authorities of base plate, the endoporus of center shaft is connected with the inner of helical Bourdon tube, the outer end of helical Bourdon tube is connected with an end of concave groove, concave groove is fixed on the shoulder of center shaft, bar permanent magnet is loaded in the concave groove, and the center shaft top was gone here and there O shape rubber ring and embedded the aperture at cavity top.
The utility model has the advantages that and adopt the spring-tube type pressure-sensing device, and the changes of magnetic field of utilizing permanent magnet passes to monitoring system with the pressure information of tire, the method of inspection of Magnetic Sensor makes the sensor element of inside tires not need the power supply power supply, outer detecting circuit can image data be analyzed at any time, system do not need to be provided with wake up, the dormancy program, simple in structure, reliable, long service life, processing of circuit is convenient, save cost, and the phase mutual interference of selecting the permanent magnet of suitable magnetic-field intensity can avoid each tire data of automobile to transmit.The utility model can also be used for the occasion of noxious gas, airtight container.
Description of drawings
The real-time monitoring of structures scheme drawing of Fig. 1 tire pressure of the present utility model;
The scheme of installation of Fig. 2 tire pressure sensor module and magnetic coupling module;
The structural representation of Fig. 3 tire pressure sensor module of the present utility model;
The structural representation of Fig. 4 electromagnetic coupled module of the present utility model;
Fig. 5 the utility model central processing module is to the diagram of circuit of pressure information data handing.
1 automobile, 2 tyre cavitys, 3 tire pressure sensing modules, 4 electromagnetic coupled modules, 5 central data processing modules, 6 rain plates, 7 tires, 8 wheel hubs, 9 automobile driving axles, 10 valves, 11 cavitys, 12 base plates, 13 helical Bourdon tubes, 14 concave grooves, 15 bar permanent magnets, 16O shape rubber ring, 17 center shafts, 18 iron cores, 19 inductance coils, the cavity of 20 electromagnetic coupled modules, the cavity cover plate of 21 electromagnetic coupled modules, the Y1 data acquisition module, the Y2 data analysis module, the Y3 information display module.
The specific embodiment
Further specify embodiment of the present utility model below in conjunction with accompanying drawing:
Referring to Fig. 1, the tire pressure real-time monitoring system mainly comprises central data processing module 5, electromagnetic coupled module 4 and tire pressure sensing module 3 compositions, tire pressure sensing module 3 is installed in each tyre cavity 2 of automobile 1, electromagnetic coupled module 4 is installed on the rain plate 6 of automobile 1, and central data processing module 5 is installed on the front panel of automobile 1 from the nearer place of chaufeur.
Referring to Fig. 2, electromagnetic coupled module 4 is installed in end face or the side of the rain plate 6 of automobile 1 near motor tire one side, and tire pressure sensing module 3 is installed in the middle portion flattening place of the wheel hub 8 that is fixed on the automobile driving axle 9 or is fixed in the end of the valve 10 on the wheel hub 8.
Referring to Fig. 3, pressure sensing module 3 is made up of cavity 11, base plate 12, helical Bourdon tube 13, concave groove 14, bar permanent magnet 15, O shape rubber ring 16 and center shaft 17.Center shaft 17 is installed in the central authorities of base plate 12, the endoporus of center shaft 17 links to each other with the inner of helical Bourdon tube 13, make the gas of inside tires enter helical Bourdon tube 13 inside, the outer end of helical Bourdon tube 13 links with concave groove 14 ends that are supported on by central aperture on center shaft 17 shoulders, bar permanent magnet 15 is positioned at the groove of concave groove 14, the centre hole and the O shape rubber ring 16 of concave groove 14 and bar permanent magnet 15 passed in the upper end of center shaft 17, embed in the aperture of cavity center of top, concave groove 14 and bar permanent magnet 15 are positioned on center shaft 17 shoulders, in cavity 11 and base plate 12 are enclosed in all parts of tire pressure sensing module.Helical Bourdon tube 13 adopts snail tubular construction or vertical helical spring tube structure.
The mode of operation of spring-tube type pressure sensor is, the air of inside tires enters helical Bourdon tube 13 through center shaft 17, helical Bourdon tube 13 can produce rotation under the pressure effect of inner air, then the end of helical Bourdon tube 13 drive concave groove 14 and bar permanent magnet 15 rotate together, rotation by permanent magnet changes near the magnetic-field intensity the outside tires electromagnetic coupled module 4 like this, thereby reaches the purpose that transmits tire internal pressure information.
Referring to Fig. 4, electromagnetic coupled module 4 is made up of iron core 18, inductance coil 19, the cavity 20 of electromagnetic coupled module and the cavity cover plate 21 of electromagnetic coupled module.Inductance coil 19 and unshakable in one's determination 18 is installed in the central authorities of cavity 20, the inductance coil 19 of electromagnetic coupled module 4 is that its axis of mutual inductance type coil is consistent with the magnetic direction of the bar permanent magnet 15 of pressure sensor module 3, the lead-in wire of inductance coil 19 links to each other with central data processing module 5 by the aperture on the cavity cover plate 21, and electromagnetic coupled module 4 is fixed on the rain plate 6 of automobile 1.
Referring to Fig. 5, the central data processing module is made up of data acquisition module Y1, data analysis module Y2 and information display module Y3.The flow process of data handing is: data acquisition module Y1 gathers the output voltage signal that each rain plate 6 powers on and changes with changes of magnetic field in the inductance coil 19 in the magnetic coupling module 4 by the mode of time-sharing multiplex, data processing module Y2 handles voltage signal then, Y3 informs chaufeur by display module, and provides corresponding warning message when inside tires force value mal.
Claims (2)
1. the passive and wireless tire pressure real-time monitoring device of a Magnetic Sensor, mainly comprise: central processing module, electromagnetic coupled module and tire pressure sensing module, the central data processing module is by data acquisition module, data analysis module and information display module are formed, the central data processing module utilizes the mode of time-sharing multiplex to measure the output signal of each electromagnetic coupled module respectively, it is characterized in that described electromagnetic coupled module is installed in the inboard of motor tire outside near tire, this module is by iron core, inductance coil, electromagnetic coupled module cavity and electromagnetic coupled module cavity cover plate are formed, inductance coil is wound on the iron core, iron core is installed in the electromagnetic coupled module cavity, the inductance coil of electromagnetic coupled module is that its axis of mutual inductance type coil is consistent with the magnetic direction of the bar permanent magnet of pressure sensor module, inductance coil is connected with the central data processing module by lead, pressure sensor module is installed in the tire of automobile, by cavity, base plate, center shaft, helical Bourdon tube, Baltimore groove, bar permanent magnet, O shape rubber ring and center shaft are formed, center shaft is installed in the central authorities of base plate, the endoporus of center shaft is connected with the inner of helical Bourdon tube, the outer end of helical Bourdon tube is connected with an end of concave groove, concave groove is fixed on the shoulder of center shaft, bar permanent magnet is loaded in the concave groove, and the center shaft top was gone here and there O shape rubber ring and embedded the aperture at cavity top.
2. the passive and wireless tire pressure real-time monitoring device of a kind of Magnetic Sensor according to claim 1 is characterized in that described helical Bourdon tube adopts plane spiral spring pipe or vertical helical spring tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200667294U CN201026788Y (en) | 2007-01-26 | 2007-01-26 | Passive wireless tire pressure real time monitoring device of magnetic transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200667294U CN201026788Y (en) | 2007-01-26 | 2007-01-26 | Passive wireless tire pressure real time monitoring device of magnetic transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201026788Y true CN201026788Y (en) | 2008-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200667294U Expired - Lifetime CN201026788Y (en) | 2007-01-26 | 2007-01-26 | Passive wireless tire pressure real time monitoring device of magnetic transducer |
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| Country | Link |
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| CN (1) | CN201026788Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2509656C1 (en) * | 2012-09-20 | 2014-03-20 | Михаил Михайлович Закатов | Passive automotive tire air pressure and temperature metre |
| CN105389964A (en) * | 2014-09-05 | 2016-03-09 | 国民技术股份有限公司 | Non-contact type passive data acquisition system, non-contact type passive data acquisition method and passive data acquisition apparatus |
| CN105501005A (en) * | 2015-10-30 | 2016-04-20 | 湖北文理学院 | Piezoresistive-magnetic-coupling-type tire air pressure detection device |
| CN105522875A (en) * | 2015-10-30 | 2016-04-27 | 湖北文理学院 | Pressure capacity magnetic coupling type tyre pressure detecting device |
| CN105691118A (en) * | 2016-01-14 | 2016-06-22 | 湖北文理学院 | Pressure-sensitive type magnetic-coupling tire pressure detection device |
| CN111516438A (en) * | 2019-02-01 | 2020-08-11 | 益力半导体股份有限公司 | Tire condition monitoring structure |
| CN111516439A (en) * | 2019-02-01 | 2020-08-11 | 益力半导体股份有限公司 | In-tire type tire condition monitoring structure |
| CN112351897A (en) * | 2018-08-24 | 2021-02-09 | 横滨橡胶株式会社 | Pneumatic tire, pneumatic tire assembly, and power supply system |
-
2007
- 2007-01-26 CN CNU2007200667294U patent/CN201026788Y/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2509656C1 (en) * | 2012-09-20 | 2014-03-20 | Михаил Михайлович Закатов | Passive automotive tire air pressure and temperature metre |
| CN105389964A (en) * | 2014-09-05 | 2016-03-09 | 国民技术股份有限公司 | Non-contact type passive data acquisition system, non-contact type passive data acquisition method and passive data acquisition apparatus |
| CN105501005A (en) * | 2015-10-30 | 2016-04-20 | 湖北文理学院 | Piezoresistive-magnetic-coupling-type tire air pressure detection device |
| CN105522875A (en) * | 2015-10-30 | 2016-04-27 | 湖北文理学院 | Pressure capacity magnetic coupling type tyre pressure detecting device |
| CN105691118A (en) * | 2016-01-14 | 2016-06-22 | 湖北文理学院 | Pressure-sensitive type magnetic-coupling tire pressure detection device |
| CN112351897A (en) * | 2018-08-24 | 2021-02-09 | 横滨橡胶株式会社 | Pneumatic tire, pneumatic tire assembly, and power supply system |
| CN112351897B (en) * | 2018-08-24 | 2022-05-24 | 横滨橡胶株式会社 | Pneumatic tire, pneumatic tire assembly, and power supply system |
| CN111516438A (en) * | 2019-02-01 | 2020-08-11 | 益力半导体股份有限公司 | Tire condition monitoring structure |
| CN111516439A (en) * | 2019-02-01 | 2020-08-11 | 益力半导体股份有限公司 | In-tire type tire condition monitoring structure |
| CN111516438B (en) * | 2019-02-01 | 2022-12-16 | 益力半导体股份有限公司 | Tire condition monitoring structure |
| CN111516439B (en) * | 2019-02-01 | 2022-12-16 | 益力半导体股份有限公司 | In-tire type tire condition monitoring structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WUHAN FINE MEMS INC. Free format text: FORMER OWNER: FEIEN MICROELECTRONICS CO., LTD., SHANGHAI Effective date: 20130325 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 201203 PUDONG NEW AREA, SHANGHAI TO: 430074 WUHAN, HUBEI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130325 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 room 500, No. 309 blue wave road, Zhangjiang, Shanghai Patentee before: Feien Microelectronics Co., Ltd., Shanghai |
|
| CX01 | Expiry of patent term |
Granted publication date: 20080227 |
|
| EXPY | Termination of patent right or utility model |