CN203254902U - Intelligent monitoring system for tire pressure - Google Patents
Intelligent monitoring system for tire pressure Download PDFInfo
- Publication number
- CN203254902U CN203254902U CN 201320154195 CN201320154195U CN203254902U CN 203254902 U CN203254902 U CN 203254902U CN 201320154195 CN201320154195 CN 201320154195 CN 201320154195 U CN201320154195 U CN 201320154195U CN 203254902 U CN203254902 U CN 203254902U
- Authority
- CN
- China
- Prior art keywords
- tire
- pressure
- module
- microcontroller
- tire pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The utility model relates to an intelligent monitoring system for tire pressure. The system is composed of a tire module and a car body module, wherein the tire module comprises an acceleration sensor used for detecting the centrifugal force of tires. The acceleration sensor can precisely measure the centrifugal force generated by the tires when a car runs so as to estimate the current speed of the car to determine the running state of the car. When the car stops, the tire module works under a power saving mode. When the car runs, the tire module works under a normal mode. When pressure or temperature is suddenly changed, the tire module works under an alarm mode until the pressure and the temperature return to normal. The power consumption of the tire module is sequentially increased under the power saving mode, the normal mode and the alarm mode. The tire module adopts a virtual conflict back-off algorithm to obtain a higher emitting success rate through lower emitting power consumption, and a user can inquire the recent pressure and temperature values of each tire in real time. The utility model realizes the low-power-consumption intelligent monitoring system for tire pressure.
Description
Technical field
The utility model belongs to the tire pressure monitoring art, especially a kind of tire pressure intelligent monitor system.
Background technology
In the process of running at high speed of vehicle, tire fault is that all drivers worry and the most difficult prevention the most, it is also the major reason that sudden traffic accident occurs, system for monitoring pressure in tyre is monitored automatically for the real-time temperature to inside tires, pressure when Vehicle Driving Cycle, tire flat and infrabar are reported to the police, guarantee driving safety; Difference according to monitoring mode, system for monitoring pressure in tyre mainly is divided into two types: (1) indirect type system for monitoring pressure in tyre, the wheel speed sensors of indirect type system for monitoring pressure in tyre by automobile ABS system comes the wheel speed difference between comparative tire, reach the purpose of monitoring tire pressure, its major defect is that the situation that can't surpass 100 kilometers/hour to situation and the speed of two above tires while deficencys judges.(2) direct tire pressure monitoring system, the direct tire pressure monitoring system utilization is arranged on the air pressure that each pressure sensor of taking turns tyre cavity is directly measured tire, and each tire pressure is shown and monitors, too low or when leakage is arranged when tire pressure, system's automatic alarm, direct tire pressure monitoring system all is better than the indirect type system for monitoring pressure in tyre on function and performance.In direct tire pressure monitoring system, controlling power consumption and avoiding launching collision is the difficult problem that two needs solve.
Pressure sensor is arranged on the wheel hub of inside tires; Only depend on the powered battery of carrying; When the electric weight of battery exhausts; Changing battery is the thing of a trouble; Therefore; Automobile vendor wishes that the work life of system for monitoring pressure in tyre surpasses tire; In other words; The work life of system for monitoring pressure in tyre is at least more than 5 years; So; Under the condition of performance, the reduce power consumption is the key of exploitation direct tire pressure monitoring system satisfying; The pressure and temperature data of each tire are that the mode by radio frequency sends; When certain tire is ready for sending its take off data; The pressure and temperature data that do not know whether other tire send; Just there is the problem of emission collision in this; The emission collision causes receiving the failure of take off data; Need to repeatedly send certain data receiver rate that guarantees; And repeatedly send the increase often mean power consumption.The direct method that reduces power consumption is to use the chip (comprising pressure sensor, microcontroller, radio-frequency transmissions chip) with sleep function, when running car, and the system for monitoring pressure in tyre full speed operation; When automobile stops, system for monitoring pressure in tyre reduces the frequency that detects and launch, can take several different methods to determine the state of kinematic motion of automobile, as the noise that produces when detecting vehicle launch, the centnifugal force that when perhaps detecting Vehicle Driving Cycle, tire rotation produces is perhaps by low frequency signal switch system for monitoring pressure in tyre etc.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of tyre pressure real time monitor system of low-power consumption is provided, temperature, pressure to the inside tires of driving vehicle carry out real-time automatic monitoring, tire flat and infrabar reported to the police, and guarantee driving safety.
The utility model solves its technical matters and takes following technical scheme to realize:
Formed by tire module and vehicle body module, tire module is mainly by tire pressure, temperature, acceleration pick-up and include the microcontroller that radio frequency sends chip and form, the microcontroller that includes radio frequency transmission chip is connected with pressure, temperature, acceleration pick-up respectively, the vehicle body module mainly is comprised of radiofrequency receiving chip, microcontroller and circuit module, radiofrequency receiving chip is connected with microcontroller, and microcontroller sends to man-machine interface by circuit module with information.
And described microcontroller is comprised of cpu system, program store, data memory RAM, I ∕ O port, basic functional units five parts.
And described tire module is installed on the wheel hub of inside tires, and the vehicle body module is installed on vehicle interior driver's seat the place ahead.
And described pressure sensor is combined by process Connection Element, metering circuit and differential pressure member sensor device.
Advantage of the present utility model and good effect are:
1, the utility model carries out real-time automatic monitoring to temperature, the pressure of inside tires, tire flat and infrabar are reported to the police, and guarantee driving safety.
2, the utility model is a kind of tire pressure intelligent monitor system of low-power consumption, has reduced the first device of electronics
Part improves reliability.
Description of drawings
Fig. 1 is block diagram of the present invention.
Fig. 2 is the tire module structured flowchart.
Fig. 3 is vehicle body modular construction block diagram.
Fig. 4 is tire module working mode change block diagram.
Fig. 5 is virtual collision back off algorithm block diagram.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is further described:
As shown in Fig. 1,2,3,4,5, a kind of tire pressure intelligent monitor system described in the utility model is comprised of tire module and vehicle body module two parts; Tire module is mainly by tire pressure, temperature, acceleration pick-up and include the microcontroller that radio frequency sends chip and form; Microcontroller is tire module " brain ", directly determines the behavior of tire module; At first, microcontroller need to judge that the running state of vehicle travels or stop, thereby the mode of operation that determines tire module is normal mode or battery saving mode, and when knowing that vehicle is in motoring condition, microcontroller need to judge whether vehicle stops; When knowing that vehicle is in halted state, microcontroller need to judge whether vehicle starts, thereby upgrades the current running state of vehicle, and microcontroller is completed this judgement by the centnifugal force that the operation acceleration pick-up regularly detects tire; Under the different running statees of vehicle, the time gap that the tire centnifugal force detects can be identical, also can be different; When the mode of operation of tire module was battery saving mode, the time gap of microcontroller manipulating tires pressure and temperature sensor was longer than the time gap under normal mode; After the take off data that obtains tire pressure and temperature, microcontroller does not always send to the vehicle body module with take off data by radio frequency, but selectively sends; Be subjected to the impact of external factor, the high pressure that tire can bear, the threshold value of low pressure change; Simultaneously, data exchange between tire module and vehicle body module is unidirectional, from tire module to the vehicle body module, this has just determined that tire module is not suitable for judging whether the take off data of tire pressure surpasses predefined threshold value, and can only judge by the take off data that checks the tire pressure that obtains in nearest a period of time whether tire pressure exists the situation of sudden change, on the contrary, the vehicle body module can be set the threshold value of suitable tire pressure according to actual conditions by man-machine interface, the warning that surpasses threshold value will be sent by the vehicle body module.
Do like this monitoring effect that can not reduce system, when tire module monitors the sudden change of tire pressure, microcontroller will enter alarm mode, accelerate the frequency that sensor measurement and radio frequency send, the vehicle body module can be paid close attention to the variation of tire pressure, judge that whether it surpasses threshold value, sends warning; Do not monitor the sudden change of tire pressure when tire module, and the take off data of current tire pressure is during near threshold value, although microcontroller carries out the frequency of sensor measurement and radio frequency transmission lower than the frequency under alarm condition, but because the variation of tire pressure is slowly, the vehicle body module can in time be received the dangerous values of tire pressure, gives the alarm; For the warning of temperature, can realize at tire module, in order to increase the alerting ability of system, also it can be realized by the vehicle body module; Microcontroller makes it enter sleep at end of operation tire pressure, temperature or acceleration pick-up immediately; Microcontroller manipulating tires pressure, temperature or acceleration pick-up need a process, at first microcontroller sends corresponding measuring command, then wait for a period of time, read at last the data of measurement, when wait for the centre, should not allow microcontroller be in the free time, should allow it enter and sleep and wait for that Interruption wakes up, perhaps utilizing during this period of time, radio frequency sends last take off data; When satisfying the condition of emission, microcontroller starts radio frequency and sends chip, mode by radio frequency sends to the vehicle body module with result of a measurement according to the virtual collision back off algorithm, the microcontroller of certain tire module is prepared to start when sending, should determine whether that other tire module is sending information, if medium is idle, can send; If medium is busy, should wait until that medium can send when idle, still, for tire module, monitor medium and whether be idle in the technical realization that is difficult to, so should avoid conflict as far as possible, a maximum retransmission is set, suppose that each transmission all clashes, needs to retransmit, after being sent completely, time quantum of random delay, then send, until satisfy maximum retransmission. next time
Usually the delay algorithm that adopts is binary exponential backoff algorithm, and algorithmic procedure is as follows: when clashing for the first time, and parameters L=2; A random number in 1 to L time slice is got at the back off time interval, and 1 time slice equals 2a, and a is that information is transferred to the required time of end from top; Whenever repeating that once conflict occurs, parameter L is doubled; The virtual collision back off algorithm is by avoiding conflict rather than detecting conflict and improve launching success rate, and algorithm does not guarantee to launch each time and can correctly be received by the vehicle body module, increases maximum retransmission and can improve launching success rate, but can increase power consumption accordingly; The vehicle body module mainly is comprised of radiofrequency receiving chip, microcontroller and relevant peripheral circuit; In the vehicle body inside modules, radiofrequency receiving chip is prepared receive data at any time, when data arrive, the data transmission of radiofrequency receiving chip after with demodulation is to microcontroller, microcontroller is noted the situation of tire by the mode driver of sound or LCDs, the vehicle body module records the measured data values of tire module report in nearest a period of time automatically, inquire about at any time for the user, like this, even during the tire abnormal, chaufeur is not at the scene, when he gets back on car, also can pinpoint the problems rapidly, in time mediate secret.
It is emphasized that; embodiment described in the utility model is illustrative; rather than determinate; therefore the utility model is not limited to the embodiment described in the specific embodiment; every by those skilled in the art according to other embodiments that the technical solution of the utility model draws, belong to equally the scope of the utility model protection.
Claims (4)
1. tire pressure intelligent monitor system, it is characterized in that: formed by tire module and vehicle body module, tire module is mainly by tire pressure, temperature, acceleration pick-up and include the microcontroller that radio frequency sends chip and form, the microcontroller that includes radio frequency transmission chip is connected with pressure, temperature, acceleration pick-up respectively, the vehicle body module mainly is comprised of radiofrequency receiving chip, microcontroller and circuit module, radiofrequency receiving chip is connected with microcontroller, and microcontroller sends to man-machine interface by circuit module with information.
2. tire pressure intelligent monitor system according to claim 1, it is characterized in that: described microcontroller is comprised of cpu system, program store, data memory RAM, I ∕ O port, basic functional units five parts.
3. tire pressure intelligent monitor system according to claim 1, it is characterized in that: described tire module is installed on the wheel hub of inside tires, and the vehicle body module is installed on vehicle interior driver's seat the place ahead.
4. tire pressure intelligent monitor system according to claim 1, it is characterized in that: described pressure sensor is combined by process Connection Element, metering circuit and differential pressure member sensor device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320154195 CN203254902U (en) | 2013-04-01 | 2013-04-01 | Intelligent monitoring system for tire pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320154195 CN203254902U (en) | 2013-04-01 | 2013-04-01 | Intelligent monitoring system for tire pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203254902U true CN203254902U (en) | 2013-10-30 |
Family
ID=49467502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320154195 Expired - Fee Related CN203254902U (en) | 2013-04-01 | 2013-04-01 | Intelligent monitoring system for tire pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203254902U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103818204A (en) * | 2014-03-06 | 2014-05-28 | 深圳市道通科技有限公司 | Method and device for tire pressure monitoring |
| CN106965631A (en) * | 2015-12-22 | 2017-07-21 | 协瑞德电子有限公司 | Apparatus and method for detecting vehicle movement in system for monitoring pressure in tyre |
| CN107415606A (en) * | 2016-05-23 | 2017-12-01 | 高福科技股份有限公司 | The operating method of radio tire pressure monitoring system |
| CN107379899B (en) * | 2017-07-07 | 2018-06-29 | 淮阴工学院 | A kind of tire condition intelligent monitor system based on wireless sensor network |
| CN109968923A (en) * | 2017-12-27 | 2019-07-05 | 胡夫·许尔斯贝克和福斯特有限及两合公司 | Tire pressure monitoring unit |
| CN110231050A (en) * | 2019-07-17 | 2019-09-13 | 贵州天控自动化信息工程有限公司 | A kind of intelligent tire monitoring system automatically recording traveling mileage |
-
2013
- 2013-04-01 CN CN 201320154195 patent/CN203254902U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103818204A (en) * | 2014-03-06 | 2014-05-28 | 深圳市道通科技有限公司 | Method and device for tire pressure monitoring |
| CN106965631A (en) * | 2015-12-22 | 2017-07-21 | 协瑞德电子有限公司 | Apparatus and method for detecting vehicle movement in system for monitoring pressure in tyre |
| CN106965631B (en) * | 2015-12-22 | 2021-02-19 | 协瑞德电子有限公司 | Apparatus and method for detecting vehicle movement in a tire pressure monitoring system |
| CN107415606A (en) * | 2016-05-23 | 2017-12-01 | 高福科技股份有限公司 | The operating method of radio tire pressure monitoring system |
| CN107379899B (en) * | 2017-07-07 | 2018-06-29 | 淮阴工学院 | A kind of tire condition intelligent monitor system based on wireless sensor network |
| CN109968923A (en) * | 2017-12-27 | 2019-07-05 | 胡夫·许尔斯贝克和福斯特有限及两合公司 | Tire pressure monitoring unit |
| CN109968923B (en) * | 2017-12-27 | 2023-05-23 | 胡夫保隆电子布雷滕有限责任公司 | Tyre pressure monitoring unit |
| CN110231050A (en) * | 2019-07-17 | 2019-09-13 | 贵州天控自动化信息工程有限公司 | A kind of intelligent tire monitoring system automatically recording traveling mileage |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203254902U (en) | Intelligent monitoring system for tire pressure | |
| CN1586932A (en) | Tyre pressure real time monitor system | |
| CN103112323B (en) | A kind of monitoring method of Tire Pressure Monitor System | |
| CN103818204A (en) | Method and device for tire pressure monitoring | |
| CN106427418B (en) | TPMS systems and its control method | |
| US9019094B2 (en) | Method for checking tire pressure in real time | |
| CN104669955B (en) | Device for monitoring tyre pressure and its method | |
| CN201117098Y (en) | Vehicle tyre pressure monitoring system | |
| CN101332749A (en) | Monitoring method and device of vehicle tyre data | |
| CN101734115B (en) | Alarm management method of vehicle tyre pressure monitoring system | |
| WO2004103739A1 (en) | Multi-function warning system for vehicle and related control method | |
| CN104228491B (en) | Matching method, equipment and system of tire pressure monitoring system | |
| CN108045179B (en) | Tire pressure monitoring system fault judgment method | |
| CN101979256B (en) | Energy-saving automobile tyre burst early warning system | |
| CN103832224B (en) | Tire pressure monitoring system and device | |
| CN104228482A (en) | Driving safety control system based on tire pressure monitoring | |
| CN203046766U (en) | Tire pressure and temperature monitoring device for tire based on singlechip microcomputer | |
| CN201566429U (en) | Tire pressure monitoring device based on centrifugal force switch | |
| CN201849261U (en) | Energy-efficient automobile blowout tire early-warning device | |
| CN109484103A (en) | Tire pressure state detection method and system | |
| CN111845218B (en) | Automatic positioning system for positions of tires of whole vehicle based on double tires on one side of vehicle axle | |
| CN203126838U (en) | Tire burst braking system based on CAN network | |
| CN202345307U (en) | Tire pressure monitoring device based on controller area network (CAN) bus | |
| CN203391574U (en) | Traffic safety control system based on tire pressure monitoring | |
| US10414216B2 (en) | Method for adapting the strategy for acquiring measurements of radial acceleration of the wheels of a vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131030 Termination date: 20140401 |