CN105667228B - Semitrailer TPMS system signal control method - Google Patents
Semitrailer TPMS system signal control method Download PDFInfo
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- CN105667228B CN105667228B CN201610005798.8A CN201610005798A CN105667228B CN 105667228 B CN105667228 B CN 105667228B CN 201610005798 A CN201610005798 A CN 201610005798A CN 105667228 B CN105667228 B CN 105667228B
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- temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
- B60C23/0422—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver characterised by the type of signal transmission means
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- Mechanical Engineering (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention belongs to technical field of vehicle safety, in particular to a kind of semitrailer TPMS system signal control method includes the following steps: system initialization, and the sensor on controller and each tire such as is established after connection at the data that each sensor to be received issues；The sensor acquisition pressure of tire, temperature data simultaneously store；If being stored with the data of last time transmission in sensor, controller is sent data to after being compressed；Otherwise, sensor directly sends data to controller.By calculating pressure difference value and temperature gap, if difference very little, then directly transmit identifier, last time numerical value is continued to use in controller, for identifier compared with pressure, temperature data, length is much smaller, can greatly reduce the data volume of transmission in this way, Channel holding time is reduced, controller is equally also just reduced and has received the time that all the sensors issue data.
Description
Technical field
The invention belongs to technical field of vehicle safety, in particular to a kind of semitrailer TPMS system signal control method.
Background technique
Heavy-load automobile is mainly used for haul goods, extremely important for the monitoring, alarming of tire pressure, now for tire pressure
Monitoring mostly uses TPMS system, and including a controller and the sensor that is mounted on each wheel, sensor is by product itself
ID identification code and the information group such as collected tire pressure, temperature be combined into the data frame up to 11 bytes and wirelessly transmit
To controller, by the identification to ID code when monitoring control devices are to tire pressure or temperature anomaly, confirm that tire location simultaneously carries out
Alarm or other processing.To prevent the issuable information transmission errors of air interference and alarm signal from losing, the number of sensor
Transmission will be repeated quickly and easily as many times as required according to frame.
For heavy-load automobile, there are many tire, especially trailer, trailer at least two axis, more also five axis,
Every axis is there are four wheel, and the tire number of trailer itself is at 8 to 20, and so more wheels can send a large amount of serial data to control
Device processed will result in following problem in this way: first, the transmission of mass data string easily generates more serious co-channel interference, make
At tire pressure loss of data；Second, controller received the sensor on all tire sending information required for the time it is longer,
It is not prompt enough for the monitoring of tire pressure that controller is allowed in this way, if being without uploading in time when tire pressure or temperature occur abnormal
Danger close.
Summary of the invention
It, being capable of transmitting promptly and accurately the purpose of the present invention is to provide a kind of semitrailer TPMS system signal control method
The collected data of sensor.
In order to achieve the above object, the technical solution adopted by the present invention are as follows: a kind of semitrailer TPMS system signal control method,
Include the following steps: (A) system initialization, the sensor on controller and each tire such as is established into after connection at each sensing to be received
The data that device issues；(B) it the sensor acquisition pressure of tire, temperature data and stores；(C) if being stored with last time hair in sensor
The data sent, into next step；Otherwise, collected pressure, temperature data and ID identification code are sent to control by sensor
Device；(D) pressure that collected pressure, temperature data and last time send, temperature data are compared calculating pressure by sensor
Difference and temperature gap, if pressure difference value and temperature gap are all larger than given threshold, sensor is by collected pressure, temperature number
Accordingly and ID identification code is sent to controller；If pressure difference value and temperature gap, which have one or be respectively less than, is equal to given threshold, pass
Sensor is resent to controller after replacing corresponding data with identifier.
Compared with prior art, there are following technical effects by the present invention: by calculating pressure difference value and temperature gap, if poor
It is worth very little, then directly transmits identifier, continue to use last time numerical value in controller, for identifier compared with pressure, temperature data, length is small
Very much, the data volume of transmission can be greatly reduced in this way, reduced Channel holding time, equally also just reduced controller and received
The time of all the sensors sending data.
Specific embodiment
Below with reference to specific embodiment, the present invention is described in further detail.
A kind of semitrailer TPMS system signal control method, includes the following steps: (A) system initialization, by controller with
Sensor on each tire such as establishes after connection at the data that each sensor to be received issues；(B) sensor acquisition tire pressure,
Temperature data simultaneously stores；(C) if being stored with the data of last time transmission in sensor, into next step；Otherwise, sensor will acquire
To pressure, temperature data and ID identification code be sent to controller；(D) sensor by collected pressure, temperature data with
The pressure of last time transmission, temperature data, which are compared, calculates pressure difference value and temperature gap, if pressure difference value and temperature gap are equal
Greater than given threshold, collected pressure, temperature data and ID identification code are sent to controller by sensor；If pressure difference value
There is one with temperature gap or be respectively less than and be equal to given threshold, sensor is resent to after replacing corresponding data with identifier
Controller.Sensor carries out compression processing after being compared to collected data, when data difference is not very big, only
Transmit identifier, controller receives the data for continuing to continue to use that last time receives after identifier over there, in this manner it is possible to press significantly
Contract the data length transmitted.Time needed for controller is received entirely the data of all the sensors sending is greatly reduced,
Ensure that the data that sensor issues again can be sent to controller in time.
Specifically, in the step D, if pressure difference value is less than or equal to given threshold and temperature gap is greater than setting threshold
Identifier, collected temperature data and ID identification code are sent to controller by value, sensor；If pressure difference value is greater than setting
Threshold value and temperature gap are less than or equal to given threshold, and sensor passes collected pressure data, identifier and ID identification code
It send to controller；If pressure difference value, temperature gap, which are respectively less than, is equal to given threshold, sensor is by identifier, identifier and ID
Identification code is sent to controller.It here, will wherein that biggish data of difference by being compared to each transmission data
Transmission, the small data of difference are replaced with identifier, and not only ensure that can timely transmit when data change, but also guarantee number
Data length is transmitted according to reducing when changing small.
Each wheel detector generally has an independent ID identification code, and the ID identification code of each wheel is different, also just
It is it is generally all long to lead to ID identification code, such as commonly because the ID identification code of sensor is different on each wheel
32bit, this undoubtedly increases the conveying length of data.In the present embodiment preferably, wheel position is stored in each sensor
Code, the wheel position code of all tire is different on same vehicle；The corresponding wheel position code of each sensor, institute are stored in controller
In the step C and step D stated, the ID identification code that sensor issues is replaced with wheel position code；The data length of the wheel position code
Less than ID identification code data length.The length very little for taking turns position code, as long as distinguishing each tire on vehicle, equally, in order to
Interference is generated because taking turns due to position code is identical when avoiding two cars distance too close, wheel position code again cannot be too short, in the present embodiment, wheel
The data length of position code is 5bit.
Preferably due to which working sensor uses battery, information about power is also critically important, in each step, sensor
Acquisition, the data sent further include electricity data.This can according to the needs of users carry out the data of monitoring required for it
It acquires, only lists tire pressure, temperature, electricity data in the present invention, other data are also possible.
Specifically, in the step A, system is initialized in accordance with the following steps: (A1) is read by matching tool
The ID identification code and its installation site of each tire；It (A2) is one wheel position code of each tire distribution on matching tool, and
Wheel position code is written in the memory space of respective sensor；(A3) matching tool identifies the installation site of sensor, ID
Code and wheel position code are written in the memory space of controller.Since wheel position code is employed herein, it is in general sensor
It without wheel position code, thus needs to be written by matching tool, matching tool is exactly one dedicated for acquisition
Tire sensor ID identification code or a kind of tool that information is written into sensor have much in the prior art, right here
Its structure is just no longer described in detail.
Illustrated below with common data length: the pressure, temperature, the length of electricity data are 5bit,
The length of identifier is 1bit.The data length of the ID identification code is 32bit, and takes turns position code and there was only 5bit.Usual one
A data packet includes that 4 frame × 11 bytes amount to 352bit, and compressed 4 frame × 3 byte amounts to 96bit, when channel occupancy
Between by hundred original Milliseconds be reduced to ten Milliseconds, the raising to transmission timeliness is very significant.
Claims (7)
1. a kind of semitrailer TPMS system signal control method, includes the following steps:
(A) sensor on controller and each tire is established after connection etc. what each sensor to be received issued by system initialization
Data；
(B) it the sensor acquisition pressure of tire, temperature data and stores；
(C) if being stored with the data of last time transmission in sensor, into next step；Otherwise, sensor is by collected pressure, temperature
Degree is accordingly and ID identification code is sent to controller；
(D) pressure that collected pressure, temperature data and last time send, temperature data are compared calculating pressure by sensor
Difference and temperature gap, if pressure difference value and temperature gap are all larger than given threshold, sensor is by collected pressure, temperature number
Accordingly and ID identification code is sent to controller；If pressure difference value and temperature gap, which have one or be respectively less than, is equal to given threshold, pass
Sensor is resent to controller after replacing corresponding data with identifier；Wherein the pressure, the length of temperature data are equal
For 5bit, the length of identifier is 1bit.
2. semitrailer TPMS system signal control method as described in claim 1, it is characterised in that: in the step D,
If pressure difference value is less than or equal to given threshold and temperature gap and is greater than given threshold, sensor is by identifier, collected
Temperature data and ID identification code are sent to controller；
If pressure difference value is greater than given threshold and temperature gap and is less than or equal to given threshold, sensor is by collected number pressure
Controller is sent to according to, identifier and ID identification code；
If pressure difference value, temperature gap, which are respectively less than, is equal to given threshold, sensor identifies pressure difference value identifier, temperature gap
Symbol and ID identification code are sent to controller.
3. semitrailer TPMS system signal control method as claimed in claim 1 or 2, it is characterised in that: each sensing
Wheel position code is stored in device, the wheel position code of all tire is different on same vehicle；Each sensor pair is stored in controller
The wheel position code answered, in the step C and step D, the ID identification code that sensor issues is replaced with position code is taken turns；The wheel position
The data length of code is less than ID identification code data length.
4. semitrailer TPMS system signal control method as claimed in claim 3, it is characterised in that: in each step, sensor
Acquisition, the data sent further include electricity data.
5. semitrailer TPMS system signal control method as claimed in claim 4, it is characterised in that: in the step A, be
System is initialized in accordance with the following steps:
(A1) the ID identification code and its installation site of each tire are read by matching tool；
It (A2) is that each tire distributes a wheel position code, and wheel position code is written to respective sensor on matching tool
In memory space；
(A3) installation site of sensor, ID identification code and wheel position code are written to the memory space of controller by matching tool
In.
6. semitrailer TPMS system signal control method as claimed in claim 5, it is characterised in that: the ID identification code
Data length is 32bit, and the data length of wheel position code is 5bit.
7. semitrailer TPMS system signal control method as described in claim 4 or 5, it is characterised in that: the electricity number
According to length be 5bit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610005798.8A CN105667228B (en) | 2016-01-04 | 2016-01-04 | Semitrailer TPMS system signal control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610005798.8A CN105667228B (en) | 2016-01-04 | 2016-01-04 | Semitrailer TPMS system signal control method |
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| CN105667228A CN105667228A (en) | 2016-06-15 |
| CN105667228B true CN105667228B (en) | 2019-11-08 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107539041B (en) * | 2016-06-29 | 2020-01-31 | 长城汽车股份有限公司 | Data transmission method and system of tire pressure sensor |
| CN107825922B (en) * | 2017-12-07 | 2020-04-28 | 深圳市道通科技股份有限公司 | Method for acquiring tire condition information, information receiving apparatus, and tire monitoring apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5886624A (en) * | 1991-08-08 | 1999-03-23 | Compagnie General Des Etablissements Michelin-Michelin & Cie | Method for processing pressure and temperature measurements in a tire monitoring system |
| EP1285786B1 (en) * | 2001-08-22 | 2016-02-03 | Sumitomo Rubber Industries Limited | Method and apparatus for detecting abnormalities of tire, and program for detecting abnormalities of tire |
| CN1912560B (en) * | 2005-08-10 | 2010-10-13 | 北京机械工业自动化研究所 | Tyre pressure monitoring method and real-time monitoring system |
| FR2953766B1 (en) * | 2009-12-15 | 2012-02-17 | Continental Automotive France | METHOD FOR ADJUSTING A TIME BASE OF A PNEUMATIC PRESSURE MEASURING UNIT |
| CN102745026A (en) * | 2011-04-22 | 2012-10-24 | 比亚迪股份有限公司 | Automobile tires ID output method, device, tires ID updating system and method thereof |
| CN103312459B (en) * | 2013-07-01 | 2016-08-17 | 合肥美赛电子有限公司 | A kind of error control method of automobile tire pressure monitoring system |
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Address after: 230601 No. 27, Taoyuan Road, Hefei economic and Technological Development Zone, Anhui, China Applicant after: Hefei hi tech automotive electronic Limited by Share Ltd Address before: 230601 No. 27, Taoyuan Road, Hefei economic and Technological Development Zone, Anhui, China Applicant before: Hefei Softec Auto-Electronic Co., Ltd. |
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