CN102848863B - Automobile tire pressure monitoring alarm system and control method thereof - Google Patents
Automobile tire pressure monitoring alarm system and control method thereof Download PDFInfo
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- CN102848863B CN102848863B CN201210301208.8A CN201210301208A CN102848863B CN 102848863 B CN102848863 B CN 102848863B CN 201210301208 A CN201210301208 A CN 201210301208A CN 102848863 B CN102848863 B CN 102848863B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 107
- 238000000034 method Methods 0.000 title claims description 54
- 238000004891 communication Methods 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 238000001514 detection method Methods 0.000 claims abstract description 4
- 238000012806 monitoring device Methods 0.000 claims abstract 4
- 239000007788 liquid Substances 0.000 claims description 14
- 239000012530 fluid Substances 0.000 claims description 9
- 238000007664 blowing Methods 0.000 claims description 4
- 206010039203 Road traffic accident Diseases 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
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Abstract
An automobile tire pressure monitoring alarm system comprises a tire pressure monitoring device installed in the automobile tire, and a central control device installed in the automobile. The automobile tire pressure monitoring alarm system can reduce the unnecessary excessive detection as much as possible based on a comparison result of a current tire pressure and a limited pressure range, and the current automobile speed adjustment monitoring cycle, so as to save electric energy. A centrifugal charging device can charge the battery, increase use time of the system and prolong the service life. The central control device can conduct braking deceleration based on the automobile speed, has rapid response, and ensures the safety of the automobile and personnel. Bluetooth used for communicating has stable wireless signal connection, and the Bluetooth signal band is completely different from the transmission signal band of a push-button-start system of the automobile, so as to avoid communication interruption of the tire pressure monitoring device and the central control device, and guarantee usage effect. The central control device can communicate with a monitoring center and a mobile phone through the antenna, thereby realizing remote monitoring on the tire.
Description
Technical field
The present invention relates to a kind of detection alarm system, specifically, is a kind of warning for tire pressure of automobile tire monitoring and control method thereof.
Background technology
Tire is the critical component that automotive operation needs, the tire pressure of motor tire is inseparable with traffic safety, if tire pressure occurs too high when running at high speed, too low easily causing is blown out, the too high tire pressure that also can cause of tyre temperature rises rapidly, also potential safety hazard can be produced, cause major traffic accidents, along with the development of highway construction, the moving velocity of automobile is more and more faster, owing to blowing out, the traffic accident quantity caused constantly increases, in vehicle travels, tire pressure and temperature are detected, chaufeur is made to understand current tyre working state in time, can avoid or reduce the generation of this type of traffic accident.
The tire pressure monitoring system of current use, device for monitoring tyre pressure needs to utilize steady arm to position, and carry out wireless connections with main frame, troublesome poeration, and wireless connection signal stability and poor reliability, easily cause signal to gang up when vehicle meeting, and the transmission signal wave band of automobile one key start up system may be overlapping with wireless connection signal wave band, form interference mutually, cause device for monitoring tyre pressure and main frame disconnecting, and the device for monitoring tyre pressure used at present passes through powered battery, device for monitoring tyre pressure is arranged in tire, be not easy to dismounting and change battery, device for monitoring tyre pressure is short for service life, tire pressure monitoring system can only be monitored, effective brake cannot be carried out to vehicle, monitoring result can only show on main frame, remote monitoring cannot be realized.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, provide a kind of long service life, wireless signal stable connection, without the check frequency time, not only can carry out the monitoring of pressure of tire and temperature, also can blow out occur before the very first time acquisition alarm, vehicle is braked, automotive tyre pressure monitoring warning and the control method thereof of remote monitoring can be carried out.
Automotive tyre pressure monitoring warning of the present invention, comprise the device for monitoring tyre pressure be arranged in motor tire, be arranged on the central control unit in automobile, described device for monitoring tyre pressure comprises microprocessor, the tyre pressure sensor be connected with microprocessor, temperature sensor, storage battery, bluetooth transceiver module, described central control unit comprises central process unit, the telltale be connected with central process unit, loud speaker, bluetooth transceiver module, central control unit is connected by bluetooth communication between bluetooth transceiver module with device for monitoring tyre pressure, the central process unit of central control unit is also connected with central vehicle control system, central vehicle control system can be used for the brake equipment of control automobile and provides speed information, the storage battery of described device for monitoring tyre pressure is also connected with charge circuit and centrifugal charging unit successively.
Preferably, the central process unit of described central control unit is also connected with antenna, Mobile phone card card reader.
Preferably, automotive tyre pressure monitoring warning also comprises monitoring and control centre, mobile phone, and monitoring and control centre and mobile phone are all connected by cell phone network communication with the antenna of central control unit.
Preferably, described centrifugal charging unit comprises plunger shaft, the piston be slidably mounted in plunger shaft, spring, liquid pipe, electrical generator, plunger shaft top inner wall is connected by spring with piston, the chamber wall at plunger shaft top is provided with breather hole, is full of fluid in the plunger shaft below piston, liquid pipe one end is connected with plunger shaft, the liquid pipe other end is connected with air, generator amature is provided with impeller, and be provided with rotating drum in the middle part of liquid pipe, impeller is arranged in rotating drum.
Preferably, unique heading code is provided with in the microprocessor of each tire pressure detecting device.
A control method for automotive tyre pressure monitoring warning, step is as follows:
1) central control unit is set up communication by bluetooth communication with heading code and tire pressure detecting device and is connected, tire location belonging to the device for monitoring tyre pressure that central control unit is connected by heading code identification communication;
2) tyre pressure sensor in device for monitoring tyre pressure is measured present tire air pressure, temperature sensor is measured present tire temperature, tire pressure information and tyre temperature data are sent to microprocessor, microprocessor is compared to tire pressure information and restriction air pressure range, and microprocessor is compared to tyre temperature data and limiting temperature value;
3) device for monitoring tyre pressure is provided with three mode of operations, is respectively passive state, active state, forced state, if when present tire air pressure is between maximum gas pressure value and safe atmospheric pressure value, device for monitoring tyre pressure is operated in passive state; If when present tire air pressure is higher than maximum gas pressure value or lower than safe atmospheric pressure value, device for monitoring tyre pressure is operated in active state; If present tire air pressure diminishes fast, device for monitoring tyre pressure is operated in forced state; If when present tire temperature is greater than limiting temperature value, device for monitoring tyre pressure is operated in active state;
4) when device for monitoring tyre pressure is operated in passive state, device for monitoring tyre pressure only sends present tire barometric information and present tire temperature data when receiving and sending instruction to central control unit, after device for monitoring tyre pressure receives and sends instruction, microprocessor sends present tire barometric information and present tire temperature data by bluetooth transceiver module to the central process unit of central control unit, and the present tire barometric information received and present tire temperature data are sent to telltale display by central process unit;
5) central vehicle control system sends speed information in real time to central control unit, and when vehicle velocity V=0, central control unit does not send and sends instruction; As 0km/h < vehicle velocity V≤40km/h, central control unit sent every 4 minutes and once sends instruction; As 40km/h < vehicle velocity V≤60km/h, central control unit sent every 2 minutes and once sends instruction; As 60km/h < vehicle velocity V≤80km/h, central control unit sent every 1 minute and once sends instruction; As vehicle velocity V > 80km/h, central control unit sends every half a minute and once sends instruction;
6) when device for monitoring tyre pressure is operated in active state, device for monitoring tyre pressure need not receive and send instruction, present tire barometric information and present tire temperature data are sent to the central process unit of central control unit by bluetooth transceiver module by microprocessor in real time, and central process unit the present tire barometric information received and present tire temperature data is sent to telltale display and control loudspeaker sends alarm;
7) when device for monitoring tyre pressure is operated in forced state, present tire barometric information and present tire temperature data are sent to the central process unit of central control unit by bluetooth transceiver module by microprocessor in real time, microprocessor sends to central process unit alarm of blowing out simultaneously, central process unit the present tire barometric information received and present tire temperature data is sent to telltale display and control loudspeaker sends alarm, if when current vehicle speed V is less than or equal to safe speed per hour, central control unit does not control brake equipment by central vehicle control system and carries out braking deceleration, if when current vehicle speed V is greater than safe speed per hour, central control unit controls brake equipment by central vehicle control system and carries out braking deceleration.
8) when device for monitoring tyre pressure is operated in passive state, the microprocessor of device for monitoring tyre pressure carries out Real-Time Monitoring to present tire air pressure, when microprocessor finds that tire pressure changes, device for monitoring tyre pressure jumps to active state, microprocessor is by the tire pressure information of bluetooth transceiver module before the central process unit transmission present tire barometric information and change of central control unit, tire pressure information before the present tire barometric information received and change is sent to telltale display by central process unit, the prompting and control loudspeaker is sounded;
The invention has the beneficial effects as follows: the result that automotive tyre pressure monitoring warning can be compared with restriction air pressure range according to present tire air pressure, and the cycle of the speed of a motor vehicle adjustment monitoring of current automobile, reduce unnecessary too much detection as much as possible, energy-conservation electric energy, centrifugal charging unit can charge to storage battery again, add the period of service of system, improve service life, central control unit the situation such as the speed of a motor vehicle can carry out braking deceleration to vehicle, be swift in response, ensure that the safety of vehicle and personnel, bluetooth is used to carry out communication, wireless signal stable connection, and bluetooth signal wave band is completely different from the transmission signal wave band of automobile one key start up system, avoid device for monitoring tyre pressure and central control unit communicating interrupt, ensure that result of use, central control unit is by antenna and monitoring and control centre and mobile communication, the remote monitor and control of tire can be realized.
Accompanying drawing explanation
Accompanying drawing 1 is the system chart of this automotive tyre pressure monitoring warning;
Accompanying drawing 2 is the part sectional view of this automotive tyre pressure monitoring warning pressure generating set.
Detailed description of the invention
Automotive tyre pressure monitoring warning of the present invention, as shown in Fig. 1 to 2, comprises the device for monitoring tyre pressure be arranged in motor tire, the central control unit be arranged in automobile.
Device for monitoring tyre pressure comprises microprocessor, the tyre pressure sensor be connected with microprocessor, temperature sensor, storage battery, bluetooth transceiver module, storage battery is tyre pressure sensor, temperature sensor, microprocessor, bluetooth transceiver module are powered, and the storage battery of device for monitoring tyre pressure is also connected with charge circuit and centrifugal charging unit successively.Unique heading code is provided with in the microprocessor of each tire pressure detecting device.
Central control unit comprises central process unit, the telltale be connected with central process unit, loud speaker, bluetooth transceiver module, central control unit is connected by bluetooth communication between bluetooth transceiver module with device for monitoring tyre pressure, the central process unit of central control unit is also connected with central vehicle control system, central vehicle control system can be used for the brake equipment of control automobile and provides speed information, the central process unit of central control unit is also connected with antenna, Mobile phone card card reader, Mobile phone card can be arranged in Mobile phone card card reader, handset identity information in Mobile phone card can be sent to central process unit by Mobile phone card card reader.
Automotive tyre pressure monitoring warning also comprises monitoring and control centre, mobile phone, and monitoring and control centre and mobile phone are all connected by cell phone network communication with the antenna of central control unit.
Centrifugal charging unit comprises plunger shaft 1, the piston 2 be slidably mounted in plunger shaft 1, spring 3, liquid pipe 4, electrical generator 5, plunger shaft 1 top inner wall is connected by spring 3 with piston 2, the chamber wall at plunger shaft 1 top is provided with breather hole 6, fluid 7 is full of in plunger shaft 1 below piston 2, liquid pipe 4 one end is connected with plunger shaft 1, and liquid pipe 4 other end is connected with air, and electrical generator 5 rotor is provided with impeller 8, be provided with rotating drum in the middle part of liquid pipe 4, impeller 8 is arranged in rotating drum.
Centrifugal charging unit is vertically mounted on wheel rim, plunger shaft 1 top is connected with wheel rim, in galloping process, because the speed of a motor vehicle is very fast, piston 2 is subject to larger centnifugal force, piston 2 overcomes the pulling force slide downward of spring 3, and piston 2 promotes the fluid 7 in plunger shaft 1, and fluid 7 along liquid pipe 4 outwardly, impeller 8 is rotated, make electrical generator 5 rotor turns produce electric energy, because liquid pipe 2 is longer and the tension force of fluid 7 is comparatively large, fluid 7 cannot efflux pipe 4.
When automobile speed declines, because the speed of a motor vehicle reduces, centnifugal force that piston 2 is subject to reduces, and spring 3 pulls piston 2 upward sliding, and fluid 4 is drawn back plunger shaft 1 by piston 2, and fluid 7 to be drawn back in process impeller 8 again and rotated, and makes electrical generator 5 rotor turns produce electric energy.
The electric energy that electrical generator 5 produces is filled with storage battery by charge circuit.
Central control unit is set up communication by bluetooth communication with heading code and tire pressure detecting device and is connected, tire location belonging to the device for monitoring tyre pressure that central control unit is connected by heading code identification communication.
Tyre pressure sensor in device for monitoring tyre pressure is measured present tire air pressure, temperature sensor is measured present tire temperature, tire pressure information and tyre temperature data are sent to microprocessor, microprocessor is compared to tire pressure information and restriction air pressure range, and microprocessor is compared to tyre temperature data and limiting temperature value.
Device for monitoring tyre pressure is provided with three mode of operations, is respectively passive state, active state, forced state, if when present tire air pressure is between maximum gas pressure value and safe atmospheric pressure value, device for monitoring tyre pressure is operated in passive state; If when present tire air pressure is higher than maximum gas pressure value or lower than safe atmospheric pressure value, device for monitoring tyre pressure is operated in active state; If present tire air pressure diminishes fast, device for monitoring tyre pressure is operated in forced state; If when present tire temperature is greater than limiting temperature value, device for monitoring tyre pressure is operated in active state.
When device for monitoring tyre pressure is operated in passive state, device for monitoring tyre pressure only sends present tire barometric information and present tire temperature data when receiving and sending instruction to central control unit, after device for monitoring tyre pressure receives and sends instruction, microprocessor sends present tire barometric information and present tire temperature data by bluetooth transceiver module to the central process unit of central control unit, and the present tire barometric information received and present tire temperature data are sent to telltale display by central process unit.
Central vehicle control system sends speed information in real time to central control unit, and when vehicle velocity V=0, central control unit does not send and sends instruction; As 0km/h < vehicle velocity V≤40km/h, central control unit sent every 4 minutes and once sends instruction; As 40km/h < vehicle velocity V≤60km/h, central control unit sent every 2 minutes and once sends instruction; As 60km/h < vehicle velocity V≤80km/h, central control unit sent every 1 minute and once sends instruction; As vehicle velocity V > 80km/h, central control unit sends every half a minute and once sends instruction.
When device for monitoring tyre pressure is operated in active state, device for monitoring tyre pressure need not receive and send instruction, present tire barometric information and present tire temperature data are sent to the central process unit of central control unit by bluetooth transceiver module by microprocessor in real time, and central process unit the present tire barometric information received and present tire temperature data is sent to telltale display and control loudspeaker sends alarm.
When device for monitoring tyre pressure is operated in forced state, present tire barometric information and present tire temperature data are sent to the central process unit of central control unit by bluetooth transceiver module by microprocessor in real time, microprocessor sends to central process unit alarm of blowing out simultaneously, central process unit the present tire barometric information received and present tire temperature data is sent to telltale display and control loudspeaker sends alarm, if when current vehicle speed V is less than or equal to safe speed per hour, central control unit does not control brake equipment by central vehicle control system and carries out braking deceleration, if when current vehicle speed V is greater than safe speed per hour, central control unit controls brake equipment by central vehicle control system and carries out braking deceleration.
When device for monitoring tyre pressure is operated in passive state, the microprocessor of device for monitoring tyre pressure carries out Real-Time Monitoring to present tire air pressure, when microprocessor finds that tire pressure changes, device for monitoring tyre pressure jumps to active state, microprocessor is by the tire pressure information of bluetooth transceiver module before the central process unit transmission present tire barometric information and change of central control unit, tire pressure information before the present tire barometric information received and change is sent to telltale display by central process unit, the prompting and control loudspeaker is sounded.
In automotive tyre pressure monitoring warning working process, the central process unit of central control unit, in real time by antenna, utilizes cell phone network to send the current tire pressure information of automobile and tyre temperature data to monitoring and control centre.
User edits the note with querying command in mobile phone, cell phone network is utilized to send note, note receives by the handset identity information that the central process unit of central control unit is sended over by antenna and Mobile phone card card reader, central process unit is analyzed note, if central process unit analyzes in note containing querying command, central process unit generates the note containing the current tire pressure information of automobile and tyre temperature data according to querying command, by antenna, cell phone network is utilized to be sent on the mobile phone of user.
Claims (5)
1. an automotive tyre pressure monitoring warning, is characterized in that, comprises the device for monitoring tyre pressure be arranged in motor tire, be arranged on the central control unit in automobile, described device for monitoring tyre pressure comprises microprocessor, the tyre pressure sensor be connected with microprocessor, temperature sensor, storage battery, bluetooth transceiver module, storage battery is tyre pressure sensor, temperature sensor, microprocessor, bluetooth transceiver module is powered, and described central control unit comprises central process unit, the telltale be connected with central process unit, loud speaker, bluetooth transceiver module, central control unit is connected by bluetooth communication between bluetooth transceiver module with device for monitoring tyre pressure, the central process unit of central control unit is also connected with central vehicle control system, central vehicle control system can be used for the brake equipment of control automobile and provides speed information, the storage battery of described device for monitoring tyre pressure is also connected with charge circuit and centrifugal charging unit successively, and described centrifugal charging unit comprises plunger shaft, be slidably mounted on the piston in plunger shaft, spring, liquid pipe, electrical generator, plunger shaft top inner wall is connected by spring with piston, the chamber wall at plunger shaft top is provided with breather hole, fluid is full of in plunger shaft below piston, liquid pipe one end is connected with plunger shaft, and the liquid pipe other end is connected with air, and generator amature is provided with impeller, be provided with rotating drum in the middle part of liquid pipe, impeller is arranged in rotating drum.
2. automotive tyre pressure monitoring warning according to claim 1, is characterized in that, the central process unit of described central control unit is also connected with antenna, Mobile phone card card reader.
3. automotive tyre pressure monitoring warning according to claim 2, is characterized in that, automotive tyre pressure monitoring warning also comprises monitoring and control centre, mobile phone, and monitoring and control centre and mobile phone are all connected by cell phone network communication with the antenna of central control unit.
4. automotive tyre pressure monitoring warning according to claim 1, is characterized in that, is provided with unique heading code in the microprocessor of each tire pressure detection monitoring device.
5. a control method for automotive tyre pressure monitoring warning, is characterized in that, step is as follows:
1) central control unit detects monitoring device by bluetooth communication and heading code and tire pressure and sets up communication and be connected, tire location belonging to the device for monitoring tyre pressure that central control unit is connected by heading code identification communication;
2) tyre pressure sensor in device for monitoring tyre pressure is measured present tire air pressure, temperature sensor is measured present tire temperature, tire pressure information and tyre temperature data are sent to microprocessor, microprocessor is compared to tire pressure information and restriction air pressure range, and microprocessor is compared to tyre temperature data and limiting temperature value;
3) device for monitoring tyre pressure is provided with three mode of operations, is respectively passive state, active state, forced state, if when present tire air pressure is between maximum gas pressure value and safe atmospheric pressure value, device for monitoring tyre pressure is operated in passive state; If when present tire air pressure is higher than maximum gas pressure value or lower than safe atmospheric pressure value, device for monitoring tyre pressure is operated in active state; If present tire air pressure diminishes fast, device for monitoring tyre pressure is operated in forced state; If when present tire temperature is greater than limiting temperature value, device for monitoring tyre pressure is operated in active state;
4) when device for monitoring tyre pressure is operated in passive state, device for monitoring tyre pressure only sends present tire barometric information and present tire temperature data when receiving and sending instruction to central control unit, after device for monitoring tyre pressure receives and sends instruction, microprocessor sends present tire barometric information and present tire temperature data by bluetooth transceiver module to the central process unit of central control unit, and the present tire barometric information received and present tire temperature data are sent to telltale display by central process unit;
5) central vehicle control system sends speed information in real time to central control unit, and when vehicle velocity V=0, central control unit does not send and sends instruction; As 0km/h < vehicle velocity V≤40km/h, central control unit sent every 4 minutes and once sends instruction; As 40km/h < vehicle velocity V≤60km/h, central control unit sent every 2 minutes and once sends instruction; As 60km/h < vehicle velocity V≤80km/h, central control unit sent every 1 minute and once sends instruction; As vehicle velocity V > 80km/h, central control unit sends every half a minute and once sends instruction;
6) when device for monitoring tyre pressure is operated in active state, device for monitoring tyre pressure need not receive and send instruction, present tire barometric information and present tire temperature data are sent to the central process unit of central control unit by bluetooth transceiver module by microprocessor in real time, and central process unit the present tire barometric information received and present tire temperature data is sent to telltale display and control loudspeaker sends alarm;
7) when device for monitoring tyre pressure is operated in forced state, present tire barometric information and present tire temperature data are sent to the central process unit of central control unit by bluetooth transceiver module by microprocessor in real time, microprocessor sends to central process unit alarm of blowing out simultaneously, central process unit the present tire barometric information received and present tire temperature data is sent to telltale display and control loudspeaker sends alarm, if when current vehicle speed V is less than or equal to safe speed per hour, central control unit does not control brake equipment by central vehicle control system and carries out braking deceleration, if when current vehicle speed V is greater than safe speed per hour, central control unit controls brake equipment by central vehicle control system and carries out braking deceleration,
8) when device for monitoring tyre pressure is operated in passive state, the microprocessor of device for monitoring tyre pressure carries out Real-Time Monitoring to present tire air pressure, when microprocessor finds that tire pressure changes, device for monitoring tyre pressure jumps to active state, microprocessor is by the tire pressure information of bluetooth transceiver module before the central process unit transmission present tire barometric information and change of central control unit, tire pressure information before the present tire barometric information received and change is sent to telltale display by central process unit, the prompting and control loudspeaker is sounded.
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| CN201210301208.8A CN102848863B (en) | 2012-08-23 | 2012-08-23 | Automobile tire pressure monitoring alarm system and control method thereof |
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| CN102848863B true CN102848863B (en) | 2015-04-08 |
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| CN103223829A (en) * | 2013-04-28 | 2013-07-31 | 无锡市崇安区科技创业服务中心 | Vehicle tire alarm apparatus |
| WO2015051534A1 (en) * | 2013-10-11 | 2015-04-16 | 深圳市集万讯电子技术有限公司 | Bluetooth-based tire state detecting device |
| CN104002629A (en) * | 2014-06-03 | 2014-08-27 | 上海纵目科技有限公司 | Bluetooth tire pressure transmitter |
| CN105034714A (en) * | 2015-06-24 | 2015-11-11 | 蒋晓凡 | Tire pressure monitor capable of remotely monitoring pressure of tire |
| CN105252972B (en) * | 2015-11-18 | 2017-07-07 | 江阴市创新气门嘴有限公司 | Monitoring system for tyres of automobile and its low-power consumption alarm method |
| CN105459740B (en) * | 2015-12-31 | 2018-07-31 | 清华大学苏州汽车研究院（吴江） | A kind of tire intelligence assistant diagnosis system |
| CN105711354A (en) * | 2016-01-27 | 2016-06-29 | 贵州天控自动化信息工程有限公司 | Wireless measurement system for internal and surface temperature fields of tire in rolling state |
| CN105955237A (en) * | 2016-05-20 | 2016-09-21 | 乐视控股（北京）有限公司 | Vehicle-mounted safety device and monitoring method thereof, vehicle control system and vehicle |
| CN106004268A (en) * | 2016-07-27 | 2016-10-12 | 广西南宁智翠科技咨询有限公司 | Bluetooth-technology-based accurate tire air pressure monitoring system for electric bicycle |
| CN107053968B (en) * | 2017-03-15 | 2020-10-30 | 深圳市昇润科技有限公司 | Intelligent Bluetooth tire condition monitoring method |
| CN107031314A (en) * | 2017-03-31 | 2017-08-11 | 合肥民众亿兴软件开发有限公司 | A kind of Tire Pressure Monitor System and its monitoring method |
| CN109203873B (en) * | 2017-07-07 | 2021-02-05 | 杭州中策车空间汽车服务有限公司 | Information processing method and system for single-wheel tire networking |
| CN107933218A (en) * | 2017-12-06 | 2018-04-20 | 东风商用车有限公司 | Automatic deceleration system for abnormal automobile tire pressure and control method thereof |
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