CN202448688U - Automobile tire pressure monitoring device - Google Patents
Automobile tire pressure monitoring device Download PDFInfo
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- CN202448688U CN202448688U CN 201220046576 CN201220046576U CN202448688U CN 202448688 U CN202448688 U CN 202448688U CN 201220046576 CN201220046576 CN 201220046576 CN 201220046576 U CN201220046576 U CN 201220046576U CN 202448688 U CN202448688 U CN 202448688U
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- frequency coil
- tyre pressure
- monitoring device
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Abstract
The utility model discloses an automobile tire pressure monitoring device which comprises a main control module, four low frequency coils and four tire pressure sensor modules. The main control module comprises a main controller, a radio frequency receiver, a bus communication unit and a low frequency coil driving unit, wherein the main controller is respectively connected with the radio frequency receiver, the bus communication unit and the low frequency coil driving unit. The four low frequency coils are connected with the main control module and driven by the low frequency coil driving unit of the main control module. Each low frequency coil controls one tire pressure sensor module, and each tire pressure sensor module comprises a sensing controller, a sensor, a radio frequency sender and a low frequency receiver receiving signals sent by the low frequency coils. According to the automobile tire pressure monitoring device, the low frequency coil driving unit and the main control module are integrated together, the low frequency coils are separated out independently, a bus communication unit and a controller in a low frequency sending module are not required, the cost is reduced, and the whole structure and a driving method are simplified.
Description
Technical field
The utility model relates to a kind of automotive tyre pressure monitoring device.
Background technology
Tire is the important component part of automobile chassis, and as important supporting member and walking element, tire is not only carrying the all-mass of automobile, and also will advance to automobile provides propulsive force, plays the effect that relaxes ground shock simultaneously.Tire all plays a part very crucial to the economy of road-holding property, ride comfort, safety, traveling comfort and the fuel oil of automobile.
After the U.S. puts into effect automotive tyre pressure monitoring system (TPMS) mandatory rules of law; Countries and regions such as China, European Union are put into effect the TPMS rules in succession, and TPMS can monitor the parameters such as air pressure of tire in real time, when tire pressure occurs when unusual; Can in time remind chaufeur, guarantee that tire pressure is in reasonable range.Can improve running safety like this, and can reduce energy consumption, be significant for reducing emission of carbon-dioxide because of the air pressure not enough tire accelerated wear test that the causes reduction simultaneously vehicle.
With reference to Fig. 1, the TPMS with bidirectional communication function is made up of with the tyre pressure sensor module U3 that is contained in inside tires near the low frequencies module U2 that is contained in the main controller module U1 in the car and be contained in the tire usually.Main controller module U1 comprises master controller, rf receiver unit and bus communication unit.Low frequencies module U2 comprises controller, bus communication unit, low-frequency coil driver element and low-frequency coil.Tyre pressure sensor module U3 comprises sensing controler, pressure sensor, temperature sensor, acceleration pick-up, rf transmitter unit, low frequency receiving element.
The mode of operation of aforementioned system is following: main controller module U1 sends order through the bus communication unit and gives low frequencies module U2; Its in-to-in bus communication unit is transferred to the controller in the low frequencies module U2 after receiving this order; After the controller differentiation should be ordered; Through low-frequency coil drive unit drives low-frequency coil; Make low-frequency coil emission low frequency signal give tyre pressure sensor module U3; Wake data such as each sensor measurement tire pressure, temperature up after low frequency receiving element in the tyre pressure sensor module U3 receives low frequency signal, and send the data to main controller module through rf transmitter unit, main controller module is sent to parts such as auto meter after with data handing.
Be provided with controller and bus communication unit in the low frequencies module of above-mentioned monitoring device with the information exchange between realization and the main controller module, make that the structure of whole device is comparatively complicated, and greatly increased the hardware cost of system.
The utility model content
The utility model technical matters to be solved provides a kind of automotive tyre pressure monitoring device, can simplify the structure of existing low frequencies module, cost-cutting.
For solving the problems of the technologies described above, the automotive tyre pressure monitoring device that the utility model provides comprises a master control module, four low-frequency coils and four tyre pressure sensor modules; Said master control module comprises master controller, radio frequency receiver, bus communication unit and low-frequency coil driver element, and wherein master controller links to each other with radio frequency receiver, bus communication unit and low-frequency coil driver element respectively; Said four low-frequency coils all link to each other with the master control module, and by the low-frequency coil drive unit drives of master control module; Tyre pressure sensor module of each low-frequency coil control, said tyre pressure sensor module comprise sensing controler, sensor, with the cooresponding RF transmitter of radio frequency receiver of master control module, receive the low frequency receptor that low-frequency coil sends signal.
Further, said low-frequency coil links to each other with the low-frequency coil driver element through wire harness.
Wherein, said low-frequency coil driver element comprises four full bridge driving circuits, and each full bridge driving circuit connection also drives a low-frequency coil.Said full bridge driving circuit is made up of four metal-oxide-semiconductor field effect transistors.
Wherein, said low-frequency coil is made up of inductance and capacitances in series.Said low-frequency coil is installed on the wheel cover, and its external packets is wrapped with shell.
Wherein, comprise pressure sensor, temperature sensor and acceleration pick-up at least in the said tyre pressure sensor module.
The beneficial effect of the utility model is; Low-frequency coil driver element in the existing low frequencies module and master control module are integrated; The low-frequency coil driver element is directly by the master control module drive, and low-frequency coil is separated separately, saved controller and bus communication unit in the low frequencies module like this; Not only reduce cost, and simplified integral structure and type of drive.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further detailed explanation:
Fig. 1 is the structural representation of the device for monitoring tyre pressure of prior art;
Fig. 2 is the structural representation of the automotive tyre pressure monitoring device of the utility model;
Fig. 3 is that the utility model medium and low frequency coil is connected scheme drawing with the circuit of master control module;
Fig. 4 is the partial enlarged drawing of Fig. 3.
Wherein description of reference numerals is following:
U1 is the master control module; U2 is the low frequencies module; U3 is the tyre pressure sensor module; U4 is the master control module; U41 is a master controller; U42 is a radio frequency receiver; U43 is the low-frequency coil driver element; U44 is the bus communication unit; U5 is a low-frequency coil.
The specific embodiment
The automotive tyre pressure monitoring device of the utility model, as shown in Figure 2, comprise a master control module U4, four low-frequency coil U5 and four tyre pressure sensor module U3.
As shown in Figure 3; Said master control module U4 comprises master controller U41 (like MCU), radio frequency receiver U42, bus communication unit U44 and low-frequency coil driver element U43; Master controller U41 links to each other with radio frequency receiver U42, bus communication unit U44 and low-frequency coil driver element U43 respectively, and bus communication unit U44 links to each other with auto meter through automobile bus.
Said four LF Antenna low-frequency coil U5 link to each other with the low-frequency coil driver element U43 of master control module U4 through wire harness, and it is installed on the automobile wheel cover, and its external packets is wrapped with shell.Said low-frequency coil U5 is made up of inductance and capacitances in series.For low-frequency coil driver element U43, in order to improve drive efficiency, the utility model adopts and recommends the differential driving method, and is as shown in Figure 4, constitutes full bridge driving circuit by 4 MOSFET.Low frequency drive unit U43 is made up of 4 road full bridge driving circuits, drives left front, right front, right back, left back 4 low-frequency coil U5 respectively.
Tyre pressure sensor module U3 of each low-frequency coil U5 control, said tyre pressure sensor module U3 comprise sensing controler, sensor, with the cooresponding RF transmitter of radio frequency receiver U42 of master control module U4, receive the low frequency receptor that low-frequency coil sends signal.At least comprise pressure sensor, temperature sensor and acceleration pick-up in the said tyre pressure sensor module.
When automobile starting; The master controller U41 direct control low-frequency coil driver element U43 of master control module U4 drives four low-frequency coil U5; Low-frequency coil U5 sends the low frequency wake-up signal to four tyre pressure sensor module U3 respectively; After the low frequency receptor of tyre pressure sensor module U3 receives wake-up signal; Control data such as each sensor measurement tire pressure, temperature, acceleration/accel; Sensing controler collects and sends this data message through RF transmitter to master control module U4 after the data, and the radio frequency receiver U42 of master control module U4 differentiates according to the content of this information frame after receiving data, and through bus communication unit U44 with data transmission to parts such as automobile combination meters.
Adopt the automotive tyre pressure monitoring system of the utility model, greatly simplified the structure of low frequencies module, reduced the hardware cost of system, concrete cost is relatively like following table:
| Existing system | The utility model system | |
| Low frequencies module middle controller unit | 4 * 8 yuan=32 yuan | Do not have |
| Discrete low frequency chip for driving | 4 * 6 yuan=24 yuan | Do not have |
| 4 road integrated low frequency chip for driving | Do not have | 21 yuan |
| The bus communication unit | 4 * 2 yuan=8 yuan | Do not have |
| Amount to | 64 yuan | 21 yuan |
More than through specific embodiment the utility model has been carried out detailed explanation, this embodiment only is the preferred embodiment of the utility model, it is not that the utility model is limited.Under the situation that does not break away from the utility model principle, equivalent replacement and improvement that those skilled in the art makes the structure of device for monitoring tyre pressure or circuit etc. all should be regarded as in the technological category that the utility model is protected.
Claims (7)
1. an automotive tyre pressure monitoring device is characterized in that: comprise a master control module, four low-frequency coils and four tyre pressure sensor modules; Said master control module comprises master controller, radio frequency receiver, bus communication unit and low-frequency coil driver element, and wherein master controller links to each other with radio frequency receiver, bus communication unit and low-frequency coil driver element respectively; Said four low-frequency coils all link to each other with the master control module, and by the low-frequency coil drive unit drives of master control module; Tyre pressure sensor module of each low-frequency coil control, said tyre pressure sensor module comprise sensing controler, sensor, with the cooresponding RF transmitter of radio frequency receiver of master control module, receive the low frequency receptor that low-frequency coil sends signal.
2. automotive tyre pressure monitoring device according to claim 1 is characterized in that: said low-frequency coil links to each other with the low-frequency coil driver element through wire harness.
3. automotive tyre pressure monitoring device according to claim 2 is characterized in that: said low-frequency coil driver element comprises four full bridge driving circuits, and each full bridge driving circuit connection also drives a low-frequency coil.
4. automotive tyre pressure monitoring device according to claim 3 is characterized in that: said full bridge driving circuit is made up of four metal-oxide-semiconductor field effect transistors.
5. automotive tyre pressure monitoring device according to claim 1 is characterized in that: said low-frequency coil is made up of inductance and capacitances in series.
6. automotive tyre pressure monitoring device according to claim 1 is characterized in that: said low-frequency coil is installed on the wheel cover, and its external packets is wrapped with shell.
7. automotive tyre pressure monitoring device according to claim 1 is characterized in that: comprise pressure sensor, temperature sensor and acceleration pick-up at least in the said tyre pressure sensor module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220046576 CN202448688U (en) | 2012-02-14 | 2012-02-14 | Automobile tire pressure monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220046576 CN202448688U (en) | 2012-02-14 | 2012-02-14 | Automobile tire pressure monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202448688U true CN202448688U (en) | 2012-09-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220046576 Expired - Fee Related CN202448688U (en) | 2012-02-14 | 2012-02-14 | Automobile tire pressure monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202448688U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104553635A (en) * | 2013-10-29 | 2015-04-29 | 上海保隆汽车科技股份有限公司 | Two-way communication tire pressure monitoring system |
| CN104960393A (en) * | 2015-07-28 | 2015-10-07 | 安徽机电职业技术学院 | Tire pressure detection device |
| CN105150777A (en) * | 2015-10-28 | 2015-12-16 | 上海泰好电子科技有限公司 | Low-frequency automatic matching method and device for tire pressure monitoring system |
| CN105291719A (en) * | 2015-11-10 | 2016-02-03 | 德文能源股份有限公司 | Automobile tire pressure monitoring device |
| CN108790627A (en) * | 2018-06-04 | 2018-11-13 | 广东合微集成电路技术有限公司 | A kind of control method of intelligent tire |
-
2012
- 2012-02-14 CN CN 201220046576 patent/CN202448688U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104553635A (en) * | 2013-10-29 | 2015-04-29 | 上海保隆汽车科技股份有限公司 | Two-way communication tire pressure monitoring system |
| CN104960393A (en) * | 2015-07-28 | 2015-10-07 | 安徽机电职业技术学院 | Tire pressure detection device |
| CN105150777A (en) * | 2015-10-28 | 2015-12-16 | 上海泰好电子科技有限公司 | Low-frequency automatic matching method and device for tire pressure monitoring system |
| CN105291719A (en) * | 2015-11-10 | 2016-02-03 | 德文能源股份有限公司 | Automobile tire pressure monitoring device |
| CN108790627A (en) * | 2018-06-04 | 2018-11-13 | 广东合微集成电路技术有限公司 | A kind of control method of intelligent tire |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120926 Termination date: 20160214 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |