CN103475275B - A kind of passive tyre generating set and tire parameter detection system - Google Patents
A kind of passive tyre generating set and tire parameter detection system Download PDFInfo
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- CN103475275B CN103475275B CN201310449006.2A CN201310449006A CN103475275B CN 103475275 B CN103475275 B CN 103475275B CN 201310449006 A CN201310449006 A CN 201310449006A CN 103475275 B CN103475275 B CN 103475275B
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Abstract
The invention provides a kind of passive tyre generating set and tire parameter detection system, the high temperature that this TRT produces while utilizing tire operation and the temperature difference of external environment condition, produce electric energy by thermoelectricity breadload, electric energy provides power supply through storage, change-over circuit and transtation mission circuit. This tire parameter detection system, comprises parameter sensors, wireless launcher and central receiver module; Adopt described passive tyre generating set to provide electric energy to tire parameter sensor and wireless launcher, this passive tyre generating set is arranged on tire; Tire parameter installation of sensors is measured the parameter of tire in tire, utilizes wireless launcher that the parameter information of tire is sent to central receiver module from inside tires, then tire parameter is shown. Solve the powerup issue of tire pressure detector in direct tire pressure monitoring system, tire parameter is detected and be different from other passive tire parameter detection system, neither rely on tire pressure and vehicle vibrations work, also do not need to introduce cost higher and complicated biography energy coil is installed.
Description
Technical field
The present invention relates to vehicle tyre parameter detecting system, particularly a kind of parameter detecting system with passive tyre generating set.
Background technology
The parameter such as pressure, temperature and humidity of automobile tire in running has very important impact to the security of vehicle, and the acceleration in tire when operation is the important parameter of decision systems running status. Therefore, the detection of all kinds of automobile tire parameters is related to the traffic safety of tyre life and automobile, has become the emphasis of industry technology area research. Wherein, be subject to especially the attention of academia and industry taking tire pressure monitoring as main system for monitoring pressure in tyre (TPMS). In order to promote the industrialization of TPMS product, promulgate a series of TPMS relevant criterion both at home and abroad, comprise the international standard ISO21750:2006 that International Organization for standardization (ISO) formulated in March, 2006; The SAEJ2657 that SAE formulated in December, 2004; And the FMVSS138 of American Highway Transportation Security Administration (NTHTSA) formulation. China has issued " tire pressure monitoring system (TPMS) " proposed standard in 2010.
Tire pressure detector in tire inflation pressure determining system can be divided into direct-type and indirect type. Indirect type tire pressure detects without at inside tires setting pressure sensor, but its accuracy in detection and precision are all difficult to meet the demands. Direct-type tire pressure detects because sensor is directly installed on inside tires, thereby accurately quick, but because tire needs to continue to rotate in vehicle operating process, therefore no matter the power supply of sensor or transfer of data all cannot realize by wired mode. Most popular is in the market that direct-type tire pressure detects, and detector mostly utilizes the lithium battery power supply carrying, and its battery life has become the maximum bottleneck that limits its application and development.
In order to address this problem, existing numerous scholars and engineer have dropped into the research of not battery-powered passive tyre pressure detection system. Existing program comprises: utilize piezoelectric, power to testing circuit by tire pressure; Utilize SAW filter materials to power to testing circuit; Utilize the coil of installing on mud guard and wheel hub to carry out radio energy-transmitting, thereby power to testing circuit; Power to testing circuit by the vibration generating device that is loaded on inside tires. But SAW filter materials cost is more expensive, manufacture craft is had relatively high expectations; The vibrated energy limited of electric energy that shaking generating set can produce, in the time that road bump rises and falls, perhaps its electric energy providing can meet the demands, but on asphalt road or highway stably, its electric energy providing is difficult to meet detector requirement; The tire pressure of radio energy-transmitting mode detects electric supply installation to be needed onboard with on wheel hub field coil to be installed simultaneously, greatly improve system cost, and coil is installed on wheel hub and has all been brought very large difficulty to the production of tire and the Performance Detection of coil, engineering feasibility is not good.
Therefore, design high, life-span of cost performance passive tire parameter detection system long and that be easy to Project Realization becomes those skilled in the art problem to be solved.
Summary of the invention
For prior art above shortcomings, the object of the invention is to solve the powerup issue of passive tire parameter detection system, provide a kind of electric energy abundance, scheme feasible, and the low passive tyre generating set of cost.
The present invention also provides the tire parameter detection system that adopts novel passive tyre generating set of the present invention.
Realize above-mentioned purpose, the present invention adopts following technical scheme to realize: a kind of passive tyre generating set, it is characterized in that, comprise thermoelectricity breadload, power storage, change-over circuit and transtation mission circuit, the high temperature that this TRT produces while utilizing tire operation and the temperature difference of external environment condition, produce electric energy by thermoelectricity breadload, electric energy provides power supply through storage, change-over circuit and transtation mission circuit; The power generation process of this TRT is:
1), after vehicle starts to travel, tyre temperature raises, when tyre temperature is increased to the T higher than environment temperature △1(DEG C) time, the output voltage of thermoelectricity breadload reaches the cut-in voltage of power storage and change-over circuit, starts energy acquisition and storage;
2), in the time that the output voltage of power storage, change-over circuit and transtation mission circuit reaches operating voltage thresholding, outwards export electric energy; Meanwhile, power storage and change-over circuit meet the requirements of lasting collection and stored energy in situation at tyre temperature and ambient temperature difference;
3) when tyre temperature drops to circumstance of temperature difference lower than △ T2(DEG C) time, the output voltage of thermoelectricity breadload is less than the shutoff voltage of power storage and change-over circuit, stops energy acquisition and storage; Supplied with by the dump energy of storing in power storage and change-over circuit;
4), in the time that the electric weight of storing in power storage and change-over circuit is not enough to support performance voltage, stop outside output voltage;
5) when tyre temperature gos up extremely higher than environment temperature △ T1(DEG C) time, return to step 1).
Further, described power storage, change-over circuit and transtation mission circuit comprise the energy storage device for storage of electrical energy, with for detection of energy storage output voltage, judge voltage ratio that whether voltage reach late-class circuit power reguirements and realize voltage stabilizing output and mu balanced circuit; Energy storage device storage is from the faint electric energy of prime thermoelectricity breadload, and its output voltage v1 increases and raises gradually with institute's stored energy wherein; Voltage ratio and mu balanced circuit judge whether v1 reaches and make late-class circuit steady operation required voltage, after the operating voltage v2 that requirement is subordinate's circuit by its voltage stabilizing if reach, export to subordinate's circuit, export otherwise cut off v2, in order to avoid damage subordinate circuit.
The present invention also provides a kind of passive tire parameter detection system, and it comprises parameter sensors, wireless launcher and central receiver module; It is characterized in that, adopt above-mentioned passive tyre generating set to provide electric energy to tire parameter sensor and wireless launcher, this passive tyre generating set is arranged on tire; Tire parameter installation of sensors is measured the parameter of tire in tire, utilizes wireless launcher that the parameter information of tire is sent to central receiver module from inside tires, then tire parameter is shown.
Compared to existing technology, the present invention has following beneficial effect:
The high temperature that will inevitably produce when 1, the passive tyre generating set of the present invention utilizes tire operation and the temperature difference of external environment condition, produce electric energy by thermoelectricity breadload, is the power supply of tire parameter detection system. The piezoelectric, shaking generator and the radio energy-transmitting coil homenergic collection scheme that adopt with respect to traditional scheme, breadload of the present invention is with low cost, the life-span long and technology maturation, and its engineering feasibility is much better than contrast scheme.
2, the invention solves the stable power-supplying problem of tire pressure detector in direct tire pressure monitoring system, make tire pressure detector neither rely on tire pressure and vehicle vibrations work, also do not need to introduce cost higher and complicated biography energy coil is installed. In tire running process, the temperature difference of wheel hub and external environment is relatively stable, thereby has guaranteed that the power supply of tire pressure monitor is more stable, is especially applicable to the driving scene application that this class of highway is higher to tire pressure monitoring demand.
3, the passive tire parameter detection system of the present invention, it comprises parameter sensors, wireless launcher, central receiver module and passive tyre generating set; Not only simple in structure, cost is low, solves the powerup issue of tire monitoring equipment, also can be used for pressure, temperature, acceleration or/and the application of humidity sensor has market prospects comparatively widely.
4, tire parameter detection system of the present invention is particularly useful for long-distance and truck.
Brief description of the drawings
Fig. 1 is electric power system circuit block diagram in the passive tire inflation pressure determining system of one embodiment of the invention.
Fig. 2 is storage in the passive tyre generating set of the present invention, change-over circuit and transtation mission circuit block diagram.
Specific embodiments
For a better understanding of the present invention, being applied to tire inflation pressure determining system below by passive tyre generating set is example, and the present invention is described in further detail.
Referring to Fig. 1, a kind of passive tire inflation pressure determining system, belongs to direct-type tire pressure monitoring system; Comprise parameter sensors (for example pressure sensor), wireless launcher and central receiver module; Parameter sensors is arranged on the air pressure of measuring tire in each tire, utilizes wireless launcher that the pressure information of tire is sent to central receiver module from inside tires, then tire pressure data is shown; Described parameter sensors and wireless launcher provide power supply by the TRT being arranged on tire; Described TRT is made up of thermoelectricity breadload, power storage, change-over circuit and transtation mission circuit, the high temperature that TRT produces while utilizing tire operation and the temperature difference of external environment condition, produce electric energy by thermoelectricity breadload, electric energy provides power supply through storage, change-over circuit and transtation mission circuit.
Described power storage, change-over circuit and transtation mission circuit comprise the energy storage device for storage of electrical energy, with for detection of energy storage output voltage, judge whether voltage reaches to the requirement of rear class circuit supply the voltage ratio that realizes voltage stabilizing output and mu balanced circuit. Energy storage device storage is from the faint electric energy of prime thermoelectricity breadload, its output voltagev 1Increasing and raise gradually with institute's stored energy wherein; Voltage ratio and mu balanced circuit judgev 1Whether reach and make late-class circuit steady operation required voltage, be the operating voltage of subordinate's circuit by its voltage stabilizing if reach requirementv 2After export to subordinate's circuit, otherwise cut offv 2Output, in order to avoid damage subordinate's circuit.
In the time that high pressure, low pressure or high temperature appear in tire, system will alarm car owner; And car owner can be according to vehicle, with setting voluntarily tire pressure alarming value scope and temperature alarming value in car custom, geographical position. If tire pressure is while declining, passive tire inflation pressure determining system can provide warning immediately, allows human pilot directly monitor the real-time tire pressure data of four tires from driving computer, understands at any time the tire pressure situation of each tire. Innovation of the present invention is, the electric power system of described tire inflation pressure determining system is made up of thermoelectricity breadload, power storage, change-over circuit and transtation mission circuit; The high temperature that electric power system produces while utilizing tire operation and the temperature difference of external environment condition, produce electric energy by thermoelectricity breadload, and electric energy is system for detecting tire pressure power supply through storage, change-over circuit and transtation mission circuit.
The operation principle of the passive tire inflation pressure determining system of the present invention is as follows:
1,, after vehicle starts to travel, tyre temperature raises, when tyre temperature is increased to the T higher than environment temperature △1(DEG C) time, the output voltage of thermoelectricity breadload reaches the cut-in voltage of power storage and change-over circuit, starts energy acquisition and storage. Energy collecting system continues to collect external energy, and the output of energy storage/electric power system is progressively risen. Isolating switch is in off-state, operating circuit power-off.
2, in the time that the output of power storage and change-over circuit reaches tire pressure monitoring and transtation mission circuit operating voltage thresholding, start to detect and send the parameters such as tire pressure. Meanwhile, power storage and change-over circuit meet the requirements of lasting collection and stored energy in situation at tyre temperature and ambient temperature difference. Tire pressure monitoring and transtation mission circuit carry out the isoparametric collection of tire pressure and transmission according to the collection of requirement of system design and transmission time interval.
3, when tyre temperature drops to circumstance of temperature difference lower than △ T2(DEG C) time (for example vehicle for a long time leave standstill), the output voltage of thermoelectricity breadload is less than the shutoff voltage of power storage and change-over circuit, stops energy acquisition and storage. Now in power storage and change-over circuit, the energy of storage still can be supported tire pressure monitoring and transtation mission circuit work a period of time.
4, in the time that the energy shortage of storing in power storage and change-over circuit is worked with support tire pressure monitoring and transtation mission circuit, tire pressure monitoring and transtation mission circuit power-off, stop the isoparametric collection of tire pressure and transmission.
5, when tyre temperature gos up extremely higher than environment temperature △ T1(DEG C) time, return to step 1.
Wherein, described thermoelectricity breadload is semiconductor temperature differential generating sheet, for example Peltier company's T EC1-007066.
To sum up, this passive tyre generating set is arranged on tire, adopt the large position of the temperature difference according to the structural adjustment of different automobile types and tire, the larger phenomenon of tyre surface and Air Temperature Difference while utilizing to greatest extent tire operation, coordinating electrical power storage and change-over circuit to realize passive tyre pressure by thermoelectric material detects, solve the powerup issue of tire pressure detector in direct tire pressure monitoring system, make tire pressure detector neither rely on tire pressure and vehicle vibrations work, also do not need to introduce cost higher and complicated biography energy coil is installed. Passive tyre pressure monitoring system of the present invention can be contained in air pressure sensing and transport module on a kind of air valve of particulate metal system, by being arranged on the sensing transmitter on each tire pore, measured tire pressure data are sent to central receiver module by wireless launcher, then are presented in monitor. If when tire pressure declines, direct-type tire pressure monitoring system can provide warning immediately.
The formation of described wireless launcher and state require to design according to gathering and sending.
In addition, passive tyre generating set also can be applicable to, in tire parameter detection system, also comprise the parameters such as temperature, acceleration or humidity, and obtain by corresponding sensor, principle is the same. Do not do tired stating at this.
Finally explanation is, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, can modify or be equal to replacement technical scheme of the present invention, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (2)
1. a passive tyre generating set, it is characterized in that, comprise thermoelectricity breadload, power storage, change-over circuit and transtation mission circuit, the high temperature that TRT produces while utilizing tire operation and the temperature difference of external environment condition, produce electric energy by thermoelectricity breadload, electric energy provides power supply through power storage, change-over circuit and transtation mission circuit;
Described power storage, change-over circuit and transtation mission circuit comprise the energy storage device for storage of electrical energy, with for detection of energy storage output voltage, judge whether voltage reaches to the requirement of rear class circuit supply the voltage ratio that realizes voltage stabilizing output and mu balanced circuit; Energy storage device storage is from the faint electric energy of prime thermoelectricity breadload, and its output voltage v1 increases and raises gradually with institute's stored energy wherein; Voltage ratio and mu balanced circuit judge whether v1 reaches and make late-class circuit steady operation required voltage, after the operating voltage v2 that requirement is subordinate's circuit by its voltage stabilizing if reach, export to subordinate's circuit, export otherwise cut off v2, in order to avoid damage subordinate circuit;
The power generation process of this TRT is:
1), after vehicle starts to travel, tyre temperature raises, when tyre temperature is increased to the T1(DEG C higher than environment temperature △) time, the output voltage of thermoelectricity breadload reaches the cut-in voltage of power storage and change-over circuit, starts energy acquisition and storage;
2), in the time that the output voltage of power storage, change-over circuit and transtation mission circuit reaches operating voltage thresholding, outwards export electric energy; Meanwhile, power storage and change-over circuit meet the requirements of lasting collection and stored energy in situation at tyre temperature and ambient temperature difference;
3) when tyre temperature drops to circumstance of temperature difference lower than △ T2(DEG C) time, the output voltage of thermoelectricity breadload is less than the shutoff voltage of power storage and change-over circuit, stops energy acquisition and storage; Supplied with by the dump energy of storing in power storage and change-over circuit;
4), in the time that the electric weight of storing in power storage and change-over circuit is not enough to support performance voltage, stop outside output voltage;
5) when tyre temperature gos up extremely higher than environment temperature △ T1(DEG C) time, return to step 1);
Described thermoelectricity breadload is semiconductor temperature differential generating sheet.
2. a passive tire parameter detection system, is characterized in that, comprises tire parameter sensor, wireless launcher and central receiver module; It is characterized in that, adopt passive tyre generating set described in claim 1 to provide electric energy to tire parameter sensor and wireless launcher, this passive tyre generating set is arranged on tire; Tire parameter installation of sensors is measured the parameter of tire in tire, utilizes wireless launcher that the parameter information of tire is sent to central receiver module from inside tires, then tire parameter is shown; Described tire parameter sensor comprises that pressure, temperature, acceleration are or/and humidity sensor.
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| CN201310449006.2A CN103475275B (en) | 2013-09-28 | 2013-09-28 | A kind of passive tyre generating set and tire parameter detection system |
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| CN201310449006.2A CN103475275B (en) | 2013-09-28 | 2013-09-28 | A kind of passive tyre generating set and tire parameter detection system |
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| CN103475275B true CN103475275B (en) | 2016-06-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103997346B (en) * | 2014-05-12 | 2017-02-15 | 东南大学 | Data matching method and device based on assembly line |
| CN104786755A (en) * | 2015-03-24 | 2015-07-22 | 王方圆 | Waterproof tire pressure detection device |
| ITUB20155809A1 (en) * | 2015-11-23 | 2017-05-23 | Cnh Ind Italia Spa | A vehicle wheel and a method to control a vehicle. |
| CN108638759A (en) * | 2018-04-26 | 2018-10-12 | 青岛科技大学 | A kind of tire hot quantity management method and intelligent tire |
| CN108790622A (en) * | 2018-07-12 | 2018-11-13 | 江苏通用科技股份有限公司 | A kind of tire construction |
| JP7300518B2 (en) * | 2019-04-18 | 2023-06-29 | ブリヂストン アメリカズ タイヤ オペレーションズ、 エルエルシー | Systems and methods for harvesting energy for electronic devices and tires configured for use therewith |
| CN111731048A (en) * | 2020-06-10 | 2020-10-02 | 深圳市点嘀互联网络有限公司 | Device and method for displaying tire pressure in real time through original vehicle central control system |
| CN114088424B (en) * | 2020-06-30 | 2024-01-30 | 中车株洲电力机车研究所有限公司 | Wheel hub abnormality monitoring method and device |
| CN115648861A (en) * | 2022-08-30 | 2023-01-31 | 重庆长安汽车股份有限公司 | System and method for automatically adjusting tire pressure |
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| CN1717339A (en) * | 2002-10-01 | 2006-01-04 | 皮尔泰克有限公司 | Power generator |
| CN101357568A (en) * | 2007-07-18 | 2009-02-04 | 米其林技术公司 | Tyre fitted with a thermoelectric device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100555659B1 (en) * | 2003-12-22 | 2006-03-03 | 삼성전자주식회사 | self power-generated sensing module and tire pressure monitoring system using the same |
| US20050248447A1 (en) * | 2004-05-10 | 2005-11-10 | Majdi Yaqub | Thermoelectric tire pressure monitor sensor |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1717339A (en) * | 2002-10-01 | 2006-01-04 | 皮尔泰克有限公司 | Power generator |
| CN101357568A (en) * | 2007-07-18 | 2009-02-04 | 米其林技术公司 | Tyre fitted with a thermoelectric device |
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