CN110901309A - Tire pressure detection method for commercial vehicle - Google Patents
Tire pressure detection method for commercial vehicle Download PDFInfo
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- CN110901309A CN110901309A CN201911192217.6A CN201911192217A CN110901309A CN 110901309 A CN110901309 A CN 110901309A CN 201911192217 A CN201911192217 A CN 201911192217A CN 110901309 A CN110901309 A CN 110901309A
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- 238000001514 detection method Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 22
- 230000008859 change Effects 0.000 claims description 36
- 230000003068 static effect Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 230000000737 periodic effect Effects 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
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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
- B60C23/0425—Means comprising permanent magnets, e.g. Hall-effect or Reed-switches
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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
- B60C23/0401—Signalling devices actuated by tyre pressure mounted on the wheel or tyre characterised by the type of alarm
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a commercial vehicle tire pressure detection method, when a vehicle is switched from an OFF gear to an ON gear, a tire pressure sensor sends the latest tire pressure information to a tire pressure receiver according to a preset trigger mode, the tire pressure receiver forwards the latest tire pressure information to a tire pressure controller, the tire pressure controller is awakened by an ON gear signal and judges whether the latest received tire pressure information reaches an alarm threshold value, if the latest received tire pressure information reaches the alarm threshold value, the tire pressure controller sends an alarm signal and tire pressure information to a vehicle instrument, the vehicle instrument sends the alarm signal and displays the position of an alarm tire and the tire pressure information, and if the latest received tire pressure information does not reach the alarm threshold value, the vehicle instrument only displays the tire pressure information. The method has the advantages of good instantaneity, high accuracy and low cost.
Description
Technical Field
The invention relates to the field of automobile tire pressure detection, in particular to a method for detecting the tire pressure of a commercial vehicle.
Background
With the increasing of road traffic volume, the rate of traffic accidents caused by commercial vehicles such as trucks, tractors, trailer dangerous goods vehicles and the like is high, and a considerable part of accidents are caused by abnormal tire air pressure, especially accidents on highways. The tire pressure monitoring system can detect the air pressure and the temperature of the tire in real time, so that the conditions of tire underpressure, overpressure or air leakage and the like can be found in time, the condition of tire burst is prevented, and according to the national tire pressure monitoring system mandatory installation regulation, all vehicles produced in China must be provided with direct or indirect tire pressure monitoring systems from 1 month and 1 day in 2020, so that the research on the tire pressure monitoring system suitable for commercial vehicle models is more and more concerned.
Currently, most of the existing tire pressure detecting systems for commercial vehicles are based on pressure sensors and wireless transceiving tire pressure detecting systems. Chinese patent application publication No. CN109484103A discloses a tire pressure status detection method, which includes: detecting tire pressure data of the vehicle in a static mode through a tire pressure sensor according to a preset frequency, and sending the detected data to a tire pressure receiving module; when the whole vehicle is electrified from an OFF gear to an ON gear, if the tire pressure alarm is in the last ON gear state, the low-pressure alarm prompt is carried out when the last static tire pressure detection pressure is lower than the low-pressure alarm release threshold value, otherwise, the tire pressure is displayed normally; if the last ON gear state is normal and no low-pressure alarm is available, the low-pressure alarm prompt is carried out when the static detection pressure of the tire pressure detection system is lower than the low-pressure alarm threshold value, otherwise, the tire pressure is displayed normally. That is to say, the tire pressure state detection method periodically detects the tire sending state in a static state, and when the tire pressure state is displayed immediately after the whole vehicle is powered ON, whether the power-ON alarm is performed or not needs to be performed according to whether the tire pressure alarm exists in the last ON gear or not.
However, ON the one hand, since the alarm information of the last ON shift is required when the alarm is performed in the above prior art, whether the tire pressure alarm information exists when the last ON shift is required to be stored, so that a memory needs to be additionally added and the alarm information needs to be called from the memory when the alarm is performed, which results in a complex structure and poor real-time performance of the alarm. ON the other hand, when the tire pressure alarm exists in the last ON gear, the vehicle recovers the standard pressure state in the OFF gear, however, after the vehicle is converted from the OFF gear to the ON gear, due to the sampling period problem of the tire pressure sensor, the scheduling of the alarm judging task and other factors, the meter can update the tire pressure data of all the tires one by one after one or a plurality of sampling periods and relieve the alarm of the last ON gear. ON the other hand, since the above prior art needs to determine whether to alarm in the current ON shift according to the alarm state of the tire pressure in the last ON shift, a false alarm may occur.
Disclosure of Invention
The invention provides a tire pressure detection method for a commercial vehicle, which can be used for tire pressure detection and alarm in the static and driving processes of the commercial vehicle and solves the problems of poor real-time performance, low accuracy and complex structure in the prior art.
When a vehicle is switched from an OFF gear to an ON gear, a tire pressure sensor sends the latest tire pressure information to a tire pressure receiver according to a preset trigger mode, the tire pressure receiver forwards the latest tire pressure information to a tire pressure controller, the tire pressure controller is awakened by an ON gear signal and judges whether the latest received tire pressure information reaches an alarm threshold value, if the latest received tire pressure information reaches the alarm threshold value, the tire pressure controller sends an alarm signal and the tire pressure information to a vehicle instrument, the vehicle instrument sends the alarm signal and displays the position of an alarm tire and the tire pressure information, and if the latest received tire pressure information does not reach the alarm threshold value, the vehicle instrument only displays the tire pressure information, wherein the preset trigger mode is as follows:
(a) when the vehicle speed of the vehicle is greater than a set speed threshold value and the tire pressure change rate detected by the tire pressure sensor is less than a set tire pressure change rate threshold value, the tire pressure sensor sends the latest tire pressure information to the tire pressure receiver in a fixed short period;
(b) when the vehicle speed of the vehicle is greater than a set speed threshold value and the tire pressure change rate detected by the tire pressure sensor is greater than a set tire pressure change rate threshold value, the tire pressure sensor sends the latest tire pressure information to the tire pressure receiver in real time;
(c) when the vehicle speed of the vehicle is less than a set speed threshold value and the tire pressure change rate detected by the tire pressure sensor is less than a set tire pressure change rate threshold value, the tire pressure sensor sends the latest tire pressure information to the tire pressure receiver in a fixed long period;
(d) when the vehicle speed of the vehicle is less than a set speed threshold value and the tire pressure change rate detected by the tire pressure sensor is greater than a set tire pressure change rate threshold value, the tire pressure sensor sends the latest tire pressure information to the tire pressure receiver in real time.
Preferably, when the vehicle is in the OFF gear, the tire pressure sensor transmits the tire pressure information to the tire pressure receiver according to a preset period, the tire pressure receiver forwards the tire pressure information to the tire pressure controller, and the tire pressure controller receives and stores the tire pressure information.
Preferably, when the vehicle is shifted from the ON range to the OFF range, the tire air pressure controller receives the OFF range signal to enter a sleep state, and receives and stores only the tire air pressure information transmitted by the tire air pressure sensor forwarded via the tire air pressure receiver according to the preset period.
Preferably, when the tire pressure controller updates the tire pressure information in a traversing manner, the tire pressure information of two steering tires is updated in sequence. In the implementation mode, the characteristics that the wheel base of the commercial vehicle is long, the number of tires is large, single tires and double tires are available are considered, when the tire data traverse updating is carried out, the data of the steering tires are preferentially updated, namely the data of the single tires are updated at first, and then the data of the double tires are updated, so that the tire pressure alarm information of the single tires can be reported more quickly, and further the danger caused by the failure of the steering tires is reduced.
Preferably, the tire pressure information includes a tire pressure and a tire temperature.
Preferably, the speed threshold value is 30km/h, and the tire air pressure change rate threshold value is 10 kpa/s.
Preferably, the short period is less than 10 s/packet, and the long period is 3-6 min/packet.
Preferably, the tire pressure controller sends the tire pressure information and the alarm signal to the vehicle instrument through a CAN bus, and the period of sending a message to the CAN bus by the tire pressure controller is 25-50 ms/packet.
Preferably, the tire pressure sensor includes a hall sensor for detecting a vehicle speed, the tire pressure controller includes a RAM, and the tire pressure information is stored in the RAM.
Preferably, the preset period is that one packet of the tire pressure information is sent every 1-1.5 hours.
The technical scheme provided by the invention has the beneficial effects that:
(1) in the tire pressure detecting method of the present invention, when the tire pressure change rate detected by the tire pressure sensor is less than the set tire pressure change rate threshold value, the tire pressure sensor transmits the tire pressure information in the periodic transmission mode, namely, the tire pressure information is transmitted according to a set period, when the tire pressure change rate detected by the tire pressure sensor is greater than a set tire pressure change rate threshold value, the tire pressure sensor adopts an event transmission mode, namely, the tire pressure information is continuously transmitted in real time, so that when the vehicle has an undervoltage or overvoltage fault, the tire pressure alarm signal can be immediately displayed after the instrument is electrified, the method has the advantages that the method can immediately transmit the data to a driver, has good real-time performance, and makes up the defect that a single periodic trigger mode cannot report the tire pressure fault immediately when the vehicle is turned from an OFF gear to an ON gear, and the tire pressure data can be updated to report the tire pressure fault after one or more sampling periods of a sensor are finished;
(2) in the tire pressure detection method, when a vehicle is switched from an OFF gear to an ON gear, the tire pressure controller only needs to process the latest package of tire pressure information to judge whether the alarm condition is met currently, if the alarm condition is not met, only the latest tire pressure information is sent, and if the alarm condition is met, the tire pressure information and the alarm signal are sent, namely whether the alarm is given or not in the ON gear according to the tire pressure alarm state in the last ON gear is not needed, so that the condition of false alarm can be effectively prevented;
(3) in the tire pressure detection method, only the tire pressure sensor, the tire pressure receiver and the tire pressure controller are needed, and no new component is needed, so that the tire pressure detection method has the advantages of low cost and universal popularization.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a flowchart of a method for detecting a tire pressure of a commercial vehicle according to an embodiment of the method of the present invention.
Fig. 2 is a schematic structural diagram of a commercial vehicle tire pressure detecting system for executing an embodiment of the method of the invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be further described in detail below with reference to the drawings in the embodiments of the present invention.
The embodiment of the invention provides a method for detecting the tire pressure of a commercial vehicle, which comprises the following steps of:
when the vehicle is in the OFF gear, the tire pressure sensor 10 transmits the tire pressure information to the tire pressure receiver 20 according to a preset period, the tire pressure receiver 20 forwards the tire pressure information to the tire pressure controller 30, and the tire pressure controller 30 receives and stores the tire pressure information. The preset period is preferably 1-1.5 hours, and one packet of the tire pressure information is sent every 1-1.5 hours, namely 1-1.5 hours per packet. The tire pressure information includes tire pressure and tire temperature, i.e., tire pressure and tire temperature.
When the vehicle is switched from the OFF gear to the ON gear, the tire pressure sensor 10 sends the latest tire pressure information to the tire pressure receiver 20 according to a preset trigger mode, the tire pressure receiver 20 forwards the latest tire pressure information to the tire pressure controller 30, the tire pressure controller 30 is awakened by the ON gear signal and judges whether the received latest tire pressure information reaches an alarm threshold value, that is, whether the tire pressure reaches a low-pressure or high-pressure threshold value, and whether the tire temperature reaches a high-temperature threshold value, if the alarm threshold value is reached, the tire pressure controller 30 sends an alarm signal and tire pressure information (that is, the tire pressure and the tire temperature) to the vehicle instrument through the CAN bus, the vehicle instrument 40 sends the alarm signal and displays the tire pressure information of the alarm tire, and if the alarm threshold value is not reached, the vehicle instrument 40. The period of sending the alarm signal and the tire pressure information to the CAN bus by the tire pressure controller 30 is 25-50 ms/packet, that is, one packet of data is sent every 25-50 ms.
Specifically, the preset trigger mode is as follows:
(a) when the vehicle speed is greater than the set speed threshold value v km/h and the air pressure change rate detected by the air pressure sensor 10 is less than the set air pressure change rate threshold value a kpa/s, the air pressure sensor 10 will update the latest air pressure information with a fixed short period T1To the tire pressure receiver 20, wherein the speed threshold value V is preferably 30km/h, the tire pressure change rate threshold value a kpa/s is preferably 10kpa/s, and the short period T1Preferably less than 10 s/packet, i.e. a packet of tire pressure information is sent every 10 seconds;
(b) when the vehicle speed is greater than the set speed threshold value v km/h and the tire pressure change rate detected by the tire pressure sensor 10 is greater than the set tire pressure change rate threshold value a kpa/s, the tire pressure sensor 10 sends the latest tire pressure information to the tire pressure receiver 20 in real time;
(c) when the vehicle speed is less than the set speed threshold value v km/h and the air pressure change rate detected by the air pressure sensor 10 is less than the set air pressure change rate threshold value a kpa/s, the air pressure sensor 10 will update the latest air pressure information with a fixed long period T2To the tire pressure receiver 20, wherein the long period T2Preferably 3-6 min/packet, namely transmitting a packet of tire pressure information every 6 minutes;
(d) when the vehicle speed of the vehicle is less than the set speed threshold value v km/h and the air pressure change rate detected by the air pressure sensor 10 is greater than the set air pressure change rate threshold value a kpa/s, the air pressure sensor 10 transmits the latest air pressure information to the air pressure receiver 20 in real time.
When the vehicle is switched from the ON range to the OFF range, the tire pressure sensor 10 transmits tire pressure information to the tire pressure receiver 20 according to a preset period, the tire pressure receiver 20 forwards the tire pressure information to the tire pressure controller 30, and the tire pressure controller 30 enters a sleep state upon receiving the OFF range signal, and receives and stores only the tire pressure information forwarded by the tire pressure receiver 20. The preset period is preferably 1-1.5 hours, and one packet of the tire pressure information is sent every 1-1.5 hours, namely 1-1.5 hours per packet. The tire pressure information includes tire pressure and tire temperature, i.e., tire pressure and tire temperature.
Specifically, fig. 2 is a schematic structural diagram of a commercial vehicle tire pressure detecting system for executing an embodiment of the method of the invention. The system includes a tire pressure sensor 10, a tire pressure receiver 20, a tire pressure controller 30, and a vehicle meter 40. The tire pressure sensor 10, the tire pressure receiver 20 and the tire pressure controller 30 are connected through an on-board local area network, and the tire pressure controller 30 is connected with the vehicle instrument 40 through a CAN bus.
Specifically, the tire air pressure sensor 10 includes a hall sensor (not shown) for detecting the vehicle speed. The tire pressure sensor 10 is configured to detect a vehicle speed, a tire pressure change rate, and tire pressure information of a vehicle, and transmit the latest tire pressure information to the tire pressure receiver 20 according to a preset trigger mode. Further, the tire air pressure sensor 10 is also configured to transmit the tire air pressure information to the tire air pressure receiver 20 in a preset cycle when the vehicle is in the OFF gear or is shifted from the ON gear to the OFF gear.
The tire pressure receiver 20 serves to forward the latest tire pressure information to the tire pressure controller 30.
The tire pressure controller 30 is configured to, when the vehicle is switched from the OFF gear to the ON gear, send a trigger signal after being awakened by the ON gear signal to control the tire pressure sensor 10 to send tire pressure information according to the preset trigger mode and determine whether the received latest tire pressure information reaches an alarm threshold value, that is, whether the tire pressure reaches a low pressure or high pressure threshold value, and whether the tire temperature reaches a high temperature threshold value, if the alarm threshold value is reached, send the tire pressure information (i.e., the tire pressure and the tire temperature) and an alarm signal to the vehicle instrument 40 via the CAN bus, and if the alarm threshold value is not reached, only send the tire pressure information to the vehicle instrument 40.
Further, the tire pressure controller 30 includes a RAM, and when the vehicle is in the OFF gear, the tire pressure sensor 10 transmits the tire pressure information to the tire pressure receiver 20 according to a preset period, and the tire pressure controller 30 receives and stores the tire pressure information, which is stored in the RAM, forwarded by the tire pressure receiver 20. When the vehicle is shifted from the ON range to the OFF range, the tire pressure sensor 10 transmits the tire pressure information to the tire pressure receiver 20 according to a preset period, and the tire pressure controller 30 receives the OFF range signal to enter a sleep state, and receives and stores only the tire pressure information, which is stored in the RAM, forwarded by the tire pressure receiver 20.
The vehicle meter 40 is used for displaying the alarm signal sent by the tire pressure controller 30, the position of the alarm tire and the tire pressure information.
The embodiment of the invention has the following beneficial effects:
(1) in the tire pressure detecting method of the present invention, when the tire pressure change rate detected by the tire pressure sensor is less than the set tire pressure change rate threshold value, the tire pressure sensor transmits the tire pressure information in the periodic transmission mode, namely, the tire pressure information is transmitted according to a set period, when the tire pressure change rate detected by the tire pressure sensor is greater than a set tire pressure change rate threshold value, the tire pressure sensor adopts an event transmission mode, namely, the tire pressure information is continuously transmitted in real time, so that when the vehicle has an undervoltage or overvoltage fault, the tire pressure alarm signal can be immediately displayed after the instrument is electrified, the method has the advantages that the method can immediately transmit the data to a driver, has good real-time performance, and makes up the defect that a single periodic trigger mode cannot report the tire pressure fault immediately when the vehicle is turned from an OFF gear to an ON gear, and the tire pressure data can be updated to report the tire pressure fault after one or more sampling periods of a sensor are finished;
(2) in the tire pressure detection method, when a vehicle is switched from an OFF gear to an ON gear, the tire pressure controller only needs to process the latest package of tire pressure information to judge whether the alarm condition is met currently, if the alarm condition is not met, only the latest tire pressure information is sent, and if the alarm condition is met, the tire pressure information and the alarm signal are sent, namely whether the alarm is given or not in the ON gear according to the tire pressure alarm state in the last ON gear is not needed, so that the condition of false alarm can be effectively prevented;
(3) in the tire pressure detection method, only the tire pressure sensor, the tire pressure receiver and the tire pressure controller are needed, and no new component is needed, so that the tire pressure detection method has the advantages of low cost and universal popularization.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A commercial vehicle tire pressure detection method is characterized in that:
when a vehicle is switched from an OFF gear to an ON gear, a tire pressure sensor sends the latest tire pressure information to a tire pressure receiver according to a preset trigger mode, the tire pressure receiver forwards the latest tire pressure information to a tire pressure controller, the tire pressure controller is awakened by an ON gear signal and judges whether the latest received tire pressure information reaches an alarm threshold value, if the latest received tire pressure information reaches the alarm threshold value, the tire pressure controller sends an alarm signal and the tire pressure information to a vehicle instrument, the vehicle instrument sends the alarm signal and displays the position of an alarm tire and the tire pressure information, and if the latest received tire pressure information does not reach the alarm threshold value, the vehicle instrument only displays the tire pressure information, wherein the preset trigger mode is as follows:
(a) when the vehicle speed of the vehicle is greater than a set speed threshold value and the tire pressure change rate detected by the tire pressure sensor is less than a set tire pressure change rate threshold value, the tire pressure sensor sends the latest tire pressure information to the tire pressure receiver in a fixed short period;
(b) when the vehicle speed of the vehicle is greater than a set speed threshold value and the tire pressure change rate detected by the tire pressure sensor is greater than a set tire pressure change rate threshold value, the tire pressure sensor sends the latest tire pressure information to the tire pressure receiver in real time;
(c) when the vehicle speed of the vehicle is less than a set speed threshold value and the tire pressure change rate detected by the tire pressure sensor is less than a set tire pressure change rate threshold value, the tire pressure sensor sends the latest tire pressure information to the tire pressure receiver in a fixed long period;
(d) when the vehicle speed of the vehicle is less than a set speed threshold value and the tire pressure change rate detected by the tire pressure sensor is greater than a set tire pressure change rate threshold value, the tire pressure sensor sends the latest tire pressure information to the tire pressure receiver in real time.
2. The commercial tire pressure detecting method according to claim 1, wherein when the vehicle is in an OFF gear, the tire pressure sensor transmits the tire pressure information to the tire pressure receiver according to a preset period, the tire pressure receiver forwards the tire pressure information to the tire pressure controller, and the tire pressure controller receives and stores the tire pressure information.
3. The commercial tire pressure detecting method according to claim 1, wherein when the vehicle is shifted from an ON gear to an OFF gear, the tire pressure controller receives an OFF gear signal to enter a sleep state, and receives and stores only the tire pressure information transmitted by the tire pressure sensor in the preset period, which is forwarded via the tire pressure receiver.
4. The commercial tire pressure detection method according to any one of claims 1 to 3, wherein the tire pressure controller first sequentially updates the tire pressure information of the two steered tires while traversing and updating the tire pressure information.
5. The commercial tire pressure detecting method according to claim 1, wherein the tire pressure information includes a tire pressure and a tire temperature.
6. The commercial tire pressure detecting method according to claim 1, wherein the speed threshold value is 30km/h and the tire pressure change rate threshold value is 10 kpa/s.
7. The tire pressure detection method for the commercial vehicle according to claim 1, wherein the short period is less than 10 s/packet, and the long period is 3-6 min/packet.
8. The commercial tire pressure detecting method according to claim 1, wherein the tire pressure controller transmits the tire pressure information and the alarm signal to the vehicle instrument via a CAN bus, and the period of the message transmitted by the tire pressure controller to the CAN bus is 25-50 ms/packet.
9. The commercial tire pressure detecting method of claim 2 or 3, wherein the tire pressure sensor includes a hall sensor for detecting a vehicle speed, the tire pressure controller includes a RAM, and the tire pressure information is stored in the RAM.
10. The tire pressure detection method for the commercial vehicle according to claim 2 or 3, wherein the preset period is that one packet of the tire pressure information is sent every 1-1.5 hours.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911192217.6A CN110901309A (en) | 2019-11-28 | 2019-11-28 | Tire pressure detection method for commercial vehicle |
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| CN201911192217.6A CN110901309A (en) | 2019-11-28 | 2019-11-28 | Tire pressure detection method for commercial vehicle |
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|---|---|---|---|---|
| US5721374A (en) * | 1996-08-19 | 1998-02-24 | Delco Electronics Corporation | Method of detecting low tire pressure by comparing wheel speeds |
| EP2110269A1 (en) * | 2008-04-16 | 2009-10-21 | Sumitomo Rubber Industries, Ltd. | Method and apparatus for detecting decrease in tire air pressure and program for determing decrease in tire air pressure |
| CN101791932A (en) * | 2009-02-01 | 2010-08-04 | 傅黎明 | Flat tire pressure monitoring module |
| CN102189979A (en) * | 2010-03-11 | 2011-09-21 | 台达电子工业股份有限公司 | System and method for integrating tire pressure monitoring and remote key-free entering |
| CN102529607A (en) * | 2010-12-31 | 2012-07-04 | 上海保隆汽车科技股份有限公司 | Sensor state control method of TPMS (Tire Pressure Monitor System) |
| CN102795062A (en) * | 2012-08-29 | 2012-11-28 | 河北永发耐磨拉轮胎制造有限公司 | Run-flat tyre and manufacturing method thereof |
| JP2015174523A (en) * | 2014-03-14 | 2015-10-05 | 太平洋工業株式会社 | Tire condition monitoring device |
| CN105774421A (en) * | 2014-12-22 | 2016-07-20 | 联创汽车电子有限公司 | Universal tire pressure monitoring system handheld tool and implementation method thereof |
-
2019
- 2019-11-28 CN CN201911192217.6A patent/CN110901309A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5721374A (en) * | 1996-08-19 | 1998-02-24 | Delco Electronics Corporation | Method of detecting low tire pressure by comparing wheel speeds |
| EP2110269A1 (en) * | 2008-04-16 | 2009-10-21 | Sumitomo Rubber Industries, Ltd. | Method and apparatus for detecting decrease in tire air pressure and program for determing decrease in tire air pressure |
| CN101791932A (en) * | 2009-02-01 | 2010-08-04 | 傅黎明 | Flat tire pressure monitoring module |
| CN102189979A (en) * | 2010-03-11 | 2011-09-21 | 台达电子工业股份有限公司 | System and method for integrating tire pressure monitoring and remote key-free entering |
| CN102529607A (en) * | 2010-12-31 | 2012-07-04 | 上海保隆汽车科技股份有限公司 | Sensor state control method of TPMS (Tire Pressure Monitor System) |
| CN102795062A (en) * | 2012-08-29 | 2012-11-28 | 河北永发耐磨拉轮胎制造有限公司 | Run-flat tyre and manufacturing method thereof |
| JP2015174523A (en) * | 2014-03-14 | 2015-10-05 | 太平洋工業株式会社 | Tire condition monitoring device |
| CN105774421A (en) * | 2014-12-22 | 2016-07-20 | 联创汽车电子有限公司 | Universal tire pressure monitoring system handheld tool and implementation method thereof |
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Application publication date: 20200324 |