CN201272208Y

CN201272208Y - Bidirectional communication type integrated tyre pressure monitoring system

Info

Publication number: CN201272208Y
Application number: CNU2008201522545U
Authority: CN
Inventors: 金晓干; 吴银虎
Original assignee: SHANGHAI TAIHAO ELECTRONIC SCIENCE AND TECHNOLOGY Co Ltd
Current assignee: SHANGHAI TAIHAO ELECTRONIC SCIENCE AND TECHNOLOGY Co Ltd
Priority date: 2008-08-22
Filing date: 2008-08-22
Publication date: 2009-07-15
Anticipated expiration: 2018-08-22

Abstract

The utility model relates to a double-way communication integrated tire pressure monitoring system which is arranged on a car, and comprises tire electronic modules arranged in tires and an electronic control unit arranged in the car; the electronic control unit comprises a high-frequency data receiving unit, a data processing unit and a low-frequency transmitting unit which are subsequently connected. The tire pressure monitoring system only needs one electronic control unit, which greatly simplifies the whole structure of the tire pressure monitoring system of the car, so that the installation of the tire pressure monitoring system is simpler. The electronic control unit only needs to comprise one low-frequency transmitting unit, which greatly simplifies a circuit structure, and obviously reduces the cost.

Description

The integrated tire pressure monitoring system of intercommunication

Technical field

The utility model relates to a kind of integrated tire pressure monitoring system of intercommunication.

Background technology

Concerning general automobile, the tire pressure size has very big influence to the wear on tyres situation.The consumption of fuel that also can increase vehicle bigger than normal or less than normal of automotive tire pressure, lasting insufficient pressure can make the lost of life of tire reach 50%.In addition, the deviation of tire pressure also can cause rupture of tire and vehicle to catch fire, and therefore, many chaufeurs all will spend a large amount of time periodic inspection tire pressures.

In view of the foregoing, along with the continuous development of auto trade, the system that various pressure to motor tire, speed, temperature etc. are monitored, promptly the TPMS system arises at the historic moment.Usually the TPMS system all is made of the display control apparatus that is contained in the sensing equipment on the tire and be contained in the car.Electronic control unit in the control convenience (ECU) receives from the detected data of sensing equipment in the tire by high-frequency receiving device.

Fig. 1 has shown that a kind of existing tire pressure monitoring system that is installed on the automobile is installed in structural representation on the automobile.As shown in Figure 1, a tire electronics module 15 is housed respectively in the near front wheel 11 of automobile, off front wheel 12, left rear wheel 13 and the off hind wheel 14, in order to detect every data of tire, for example temperature, pressure etc.A low frequencies module 16 also is housed respectively near the tyre gaiter of the near front wheel 11, off front wheel 12, left rear wheel 13 and off hind wheel 14.Electronic control unit ECU sends to various control commands on the tire electronics module 15 by low frequencies module 16.Each low frequencies module 16 is connected to electronic control unit ECU by general data line 17, and electronic control unit ECU also connects a high frequency receiving element UHF.Electronic control unit ECU receives the data that tire electronics module 15 sends by high frequency receiving element UHF and handles, and the data after handling are sent to combination instrument by bus.

The tire pressure monitoring system number of elements of said structure is many, the circuit structure complexity.Perfect along with vehicle functions nowadays also had higher requirement to free space in the vehicle.

The utility model content

Technical problem to be solved in the utility model provides a kind of integrated tire pressure monitoring system of intercommunication, can simplified structure, and take arrangement space on vehicle as much as possible less.

To achieve these goals, the technical solution of the utility model is as follows:

A kind of integrated tire pressure monitoring system of intercommunication is installed on the automobile, comprises being installed in the tire electronics module in the tire and being installed in an interior electronic control unit of car; Described electronic control unit comprises a high-frequency data receiving element, a data processing unit and low frequencies unit that links to each other successively.

Adopt above-mentioned tire pressure monitoring system,, simplified the integral structure of tire pressure monitoring system on the automobile greatly, make that also the installation process of tire pressure monitoring system is more simple owing to only need an electronic control unit is installed.Electronic control unit only needs to comprise a low frequencies unit, has greatly simplified circuit structure, cost decline highly significant.

Preferably, in order to help installing, described electronic control unit is installed in the chassis of automobile.

Preferably, a described high-frequency data receiving element, a low frequencies unit and a data processing unit are integrated in the housing of described electronic control unit, with further simplified structure, cost-cutting.

Described high-frequency data receiving element connects an antenna.

Description of drawings

Fig. 1 is the module diagram of existing tire pressure monitoring system;

Fig. 2 is the module diagram of the integrated tire pressure monitoring system of intercommunication of the present utility model;

Fig. 3 is the modular construction figure of the ECU part among Fig. 2;

Fig. 4 is the circuit diagram of the ECU part among Fig. 2.

The specific embodiment

According to Fig. 2 to Fig. 4, provide preferred embodiment of the present utility model, and described in detail below, enable to understand better function of the present utility model, characteristics.

Fig. 2 is the module diagram of the integrated tire pressure monitoring system of intercommunication of the present utility model.As shown in the figure, the integrated tire pressure monitoring system of intercommunication of the present utility model is installed on the automobile, comprises tire electronics module 15 and electronic control unit ECU.The quantity of tire electronics module 15 is four, and a tire electronics module 15 is installed in four

tires

11,12,13,14 respectively.Electronic control unit ECU and four

tires

11,12,13,14 are wireless connections.Electronic control unit ECU sends the data to multi-functional combination instrument by data line.

Fig. 3 is the modular construction figure of the ECU part among Fig. 2.As shown in Figure 3, include high-frequency data acceptor circuit 9, data processing unit circuit 8 and the low frequencies element circuit 7 that links to each other successively among the electronic control unit ECU.Described high-frequency data acceptor circuit 9, data processing unit circuit 8 and low frequencies element circuit 7 all are integrated in the interior chassis that is installed in automobile as a device of housing of described electronic control unit ECU.Because adopt a low frequencies unit to call out four tire electronics modules, electronic control unit ECU preferably is placed on the chassis central authorities of automobile, like this its with four tire electronics modules apart from basic identical, helping can successful call to four a tire electronics module.

Fig. 4 is the circuit diagram of the ECU part among Fig. 2.As seen from Figure 4, electronic control unit ECU of the present utility model only needs a data processing unit circuit 8, and data processing unit circuit 8 directly links to each other with a low frequencies element circuit 7 by driving tube.Described high-frequency data acceptor circuit 9 connects an antenna 91 by capacitor C 8.This high-frequency data acceptor circuit 9 connects antenna 91 by an inductance and also is fine.Combination instrument among Fig. 4 is responsible for data display and parameter input.

Native system is high frequency (315MHz or 433.92MHz or 868MHz or 2.4GHz etc.), low frequency (125KHz) intercommunication system, behind automotive ignition, data processing unit circuit 8 is by low frequencies element circuit 7 emission wireless low frequency signals (125KHz), the tire electronics module is sensed the laggard line command of 125KHz low frequency signal and is explained, and make respective handling according to order, simultaneously with the tire intrinsic parameter as: related datas such as Pressure/Temperature/electric weight are transferred on the high-frequency data acceptor circuit 9 with high frequency wireless mode (315MHz or 433.92MHz or 868MHz or 2.4GHz etc.), carry out being transferred to again on the data processing unit circuit 8 after the demodulation (or decoding) through 9 pairs of RF Frames of high-frequency data acceptor circuit, after data processing unit circuit 8 carries out data handing, with type of transmission such as CAN_Bus or LIN_Bus related data is presented on the combination instrument again.

Adopt above-mentioned tire pressure monitoring system, owing to only need to install the electronic control unit ECU of an integration, simplified the integral structure of tire pressure monitoring system on the automobile greatly, make that also the installation process of tire pressure monitoring system is more simple, cost decline highly significant, and can utilize the space of vehicle better.

Above-described, be preferred embodiment of the present utility model only, be not in order to limiting scope of the present utility model, the foregoing description of the present utility model can also be made various variations.For example, a high-frequency data receiving element in the utility model, a low frequencies unit and a data processing unit can adopt the combination in any mode to encapsulate.Such as high-frequency data receiving element circuit package become behind the device again with the low frequencies unit separately encapsulation device, data processing unit separately the device of encapsulation link to each other.High-frequency data receiving element circuit and low frequencies unit be packaged into together a device again with data processing unit separately the device of encapsulation link to each other and also be fine.Be that every simple, equivalence of doing according to the claims and the description of the utility model application changes and modification, all fall into the claim protection domain of the utility model patent.

Claims

1, a kind of integrated tire pressure monitoring system of intercommunication is installed on the automobile, comprises the tire electronics module that is installed on the tire and is installed in an interior electronic control unit of car; It is characterized in that described electronic control unit comprises a high-frequency data receiving element, a data processing unit and low frequencies unit that links to each other successively.

2, the integrated tire pressure monitoring system of intercommunication as claimed in claim 1 is characterized in that, described electronic control unit is installed in the chassis of automobile.

3, the integrated tire pressure monitoring system of intercommunication as claimed in claim 1 or 2, it is characterized in that a described high-frequency data receiving element, a low frequencies unit and a data processing unit are integrated in the housing of described electronic control unit.

4, the integrated tire pressure monitoring system of intercommunication as claimed in claim 3 is characterized in that, described high-frequency data receiving element connects an antenna.