CN101339203A - Automobile wheel speed sensor fault monitoring method - Google Patents
Automobile wheel speed sensor fault monitoring method Download PDFInfo
- Publication number
- CN101339203A CN101339203A CNA2007101570464A CN200710157046A CN101339203A CN 101339203 A CN101339203 A CN 101339203A CN A2007101570464 A CNA2007101570464 A CN A2007101570464A CN 200710157046 A CN200710157046 A CN 200710157046A CN 101339203 A CN101339203 A CN 101339203A
- Authority
- CN
- China
- Prior art keywords
- sensor
- fault
- wheel speed
- threshold value
- wheel
- 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.)
- Granted
Links
Images
Abstract
The invention discloses a method for testing fault of an automobile wheel speed sensor, which mainly analyzes all afferent rotating speed and calculates the largest wheel speed; when the largest wheel speed is greater than a certain threshold, whether the wheel speed of each wheel is normal is judged, the state of the wheel speed of each wheel is recorded with a state word; if the wheel speed output by the sensor is not normal and the state of each wheel recorded before and after is coherent, the duration of the state is recorded; when the duration of the fault state exceeds the threshold, the fault is confirmed. The method can monitor the working condition of the sensor when the vehicle runs and records the state of the fault sensor for each control system to make the right judgment, thus implementing the correct pressure regulator control and guarantying the traffic safety.
Description
Technical field
The present invention relates to a kind of automobile active safety monitoring technology, relate in particular to automobile wheel speed sensor fault monitoring method.
Background technology
The anti-blocking brake system of widespread use (ABS) or drive in the antiskid system (ASR) on Hyundai Motor, all come the perception wheel velocity by the wheel speed sensors that is installed on the wheel, the ABS/ASR controller calculates wheel velocity and acceleration according to the wheel speed signal that wheel speed sensors transmits, the analysing vehicle wheels state, regulate the pressure of checking cylinder by pressure governor, locking or too trackslip when driving when preventing wheel braking.Therefore, whether wheel speed signal normally directly has influence on the judgement of controller to wheel condition.If wheel speed signal is undesired, may cause controller to carry out incorrect control, influence traffic safety.When following situation occurring, sensor output signal is zero, as sensor internal or and controller between line broken circuit; The sensor internal short circuit; Circuit is normal, but because the excesssive gap between sensor and the induction gear ring can't produce induced voltage in sensor; Other causes that controller can't detect the reason of sensor output signal.As wheel on wheel speed sensors normal signal output is arranged, and the wheel that has is not when having wheel speed signal, when automobile carries out common braking, controller may be thought the wheel locking of no wheel speed signal, and this wheel braking cylinder is carried out incorrect decompression, cause poor stop, even cause traffic hazard.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of automobile wheel speed sensor fault monitoring method, can be when vehicle operating the monitoring sensor working condition, thereby the state of record trouble sensor makes accurate judgment for each control system and implements correct pressure adjusting control, guarantee driving safety.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: automobile wheel speed sensor fault monitoring method, may further comprise the steps,
The first step, analyze the input speed of all the sensors, choose wherein maximum wheel speed Vmax, when Vmax monitoring beginning during greater than threshold value Vth1, this threshold value Vth1 is the minimum vehicle speed value of normal operation behind the automobile starting, and Vmax then withdraws from monitoring less than threshold value Vth1 when the automobile off-duty;
Second step, the input speed of each sensor and threshold value Vth2 are relatively, this threshold value Vth2 is less than threshold value Vth1, when the input speed of sensor during less than threshold value Vth2 this sensor have fault and write down the position STAT of sensor on automobile, and the number N of doubtful fault sensor, rotating speed that each sensor is re-entered and threshold value Vth2 are relatively again, the record of front and back monitoring gained is identical just to show that the sensor that is recorded is in malfunction, and the lasting time T of opening entry malfunction, thereby avoid the wrong report that causes because of undesired signal, then withdraw from monitoring as the record of front and back monitoring gained is inequality;
The 3rd step, time threshold characteristic inequality according to various faults generations, the fault sensor number Nx of due time T x and opposite position relation relatively when utilizing malfunction duration T, fault sensor number N, fault sensor position STAT and sensor to break down, realize fault recognition, with this failure message input store, monitoring finishes again.If the data of all records all do not meet with analog value then withdraw from monitoring.
Be the generation of more direct prompting fault, send alerting signal behind the fault recognition, inform the driver by corresponding circuit.
The present invention adopts technique scheme, for the ABS/ASR dispatch control system provides the wheel speed sensors monitoring function, makes control system avoid pressure governor is implemented incorrect control, guarantee driving safety when the wheel speed sensors malfunction.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is further specified.
Fig. 1 is the system chart of a kind of embodiment of automobile wheel speed sensor fault monitoring method of the present invention;
Fig. 2 is the fundamental diagram of the fault sensor position STAT of a kind of embodiment of automobile wheel speed sensor fault monitoring method of the present invention;
Fig. 3 is the process flow diagram of a kind of embodiment of automobile wheel speed sensor fault monitoring method of the present invention.
Embodiment
The present invention works on the ECU of ABS/ASR dispatch control system, and it is based on uses ECU to carry out sensor monitors.A kind of embodiment of the present invention, as shown in Figure 1,101,102,103,104 is four wheel speed sensors of automobile; The wheel speed that Vfl, Vfr, Vrl, Vrr export for each sensor; As shown in Figure 2, being used for the wheel speed status word of record trouble sensing station STAT is provided with Sfl, Sfr, Srl, Srr, and respectively with each wheel on sensing station corresponding one by one, when the sensor of being put 1 interval scale relevant position is in malfunction, when the sensor of being put 0 interval scale relevant position is in normal condition.Wheel speed signal enters and analyzes monitoring in 105.Monitoring modular will be monitored the result notification ABS/ASR control module 106 of gained, by the working condition of emergency warning lamp or display 107 indication driver wheel speed sensors, store monitoring results with EEPROM 108 simultaneously.
Embed in the master routine of ABS/ASR dispatch control system the cycle timing operation as program module.As shown in Figure 3, during work, program is gathered the wheel speed signal that the sensor on four wheels sends earlier, mutually more then will wherein maximum speed record maximal rate Vmax between Vfl, Vfr, Vrl, the Vrr.Because in a single day automobile has wheel after the operation certainly, get one according to the situation of each automobilism rear wheel rotating speed and can show that automotive wheel begins to rotate and rotate normal threshold value Vth1.If maximal rate Vmax is less than threshold value Vth1 then can not judge whether automobile moves, so directly withdraw from monitoring facilities.As maximal rate Vmax during, show that automobile may move, and then begins to analyze each wheel speed greater than threshold value Vth1.
Threshold value Vth2 is less than threshold value Vth1, and it shows that certain sensor signal is undesired.When analyzing each wheel speed, with Vfl, Vfr, Vrl, Vrr one of them and threshold value Vth2 relatively, if relatively draw this test data greater than threshold value Vth2 then withdraw from monitoring.When input speed Vfl, Vfr, Vrl, the Vrr of sensor when wherein a value is less than threshold value Vth2 this sensor have fault and write down the position STAT of sensor on automobile, and the number N of doubtful fault sensor, for example when monitoring Vfl, Vfl is less than Vth2, then with 0 position 1 of fault sensor position STAT, and the N value added 1, other three rotation speed monitorings by that analogy, the rotating speed of final analysis all the sensors input.Be the influence that excludes the interference signal, carry out the twice wheel speed analysis in front and back, effectively like this avoided the wrong report that causes because of undesired signal.Before and after the record of monitoring gained is inequality then withdraws from monitoring, just show that the sensor that is recorded is in malfunction as the record of front and back monitoring gained is identical, and the time T that continues of opening entry malfunction.
Set the different fault recognition time at sensor in different positions, therefore can confirm the fault of different wheel sensor according to the time that fault continues.Compare the method for disposable affirmation fault, effectively avoided obscuring the real working condition and the sensor fault of automobile, improve the accuracy of Fault Identification.There is not wheel speed signal as detecting propons when detection module, and back axle has normal wheel speed signal, then might be that two preceding bridge sensors break down simultaneously, also might be that automobile is tested on rotary drum, and simultaneously also might be automobile axle adheres to the road surface and trackslip low.Like this at this situation, be that propons does not have the wheel speed signal back axle normal wheel speed signal is arranged, setting this state duration is the time that nominal situation generally can not reach, like this active zone sub sensor fault and nominal situation, improve the accuracy that detects, do not produce wrong report.The mode record of malfunction duration T by regularly adding up, promptly when identical state duration surpasses the threshold value of setting, just can judge the malfunction duration T at the situation of a wheel fault, two wheel faults, three wheel faults respectively, because this section program reruned in the cycle, so the malfunction duration T can be along with malfunction accumulative total.Be three kinds of wheel faults analysis tables below,
Can draw from above table, if a wheel detector breaks down, N=1, and the duration surpass Tth1, confirm that then fault takes place, be the sensor fault of which wheel according to a position judgement of being put 1 among the STAT of fault sensor position.When detecting the sensor that may break down and be 2, judge whether two wheels that break down are same axle, if not same axle, the time of confirming is Tth2, if same axle, then judgement time Tth3 will extend, because might be that automobile detects on detection lines such as rotary drum or driving wheel adheres to the road surface and trackslips low, so time T th3 will be longer than above-mentioned situation.When detecting the sensor that may break down and be 3, acknowledging time is Tth4, and acknowledging time also requires longer, avoids obscuring with real working condition, be picked up if any a wheel and keep in repair, and wheel, and other wheel does not rotate.For fear of thinking this situation and similar situation by mistake to be fault takes place, Tth4 sets longly slightly.
After finishing fault recognition, there is wheel speed sensor fault in program notice ABS/ASR control module, and control module selects to enter fail safe pattern or closing control fully according to the fault order of severity, and with failed storage in EEPROM.There is the wheel speed fault by emergency warning lamp or display indication driver simultaneously.
Claims (2)
1, automobile wheel speed sensor fault monitoring method is characterized in that: may further comprise the steps,
The first step is analyzed the input speed of all the sensors, chooses wherein maximum wheel speed Vmax, and when Vmax monitoring beginning during greater than threshold value Vth1, this threshold value Vth1 is the minimum vehicle speed value of normal operation behind the automobile starting;
Second step, the input speed of each sensor and threshold value Vth2 are relatively, this threshold value Vth2 is less than threshold value Vth1, when the input speed of sensor during less than threshold value Vth2 this sensor have fault and write down the position STAT of sensor on automobile, and the number N of doubtful fault sensor, rotating speed that each sensor is re-entered and threshold value Vth2 are relatively again, the record of front and back monitoring gained is identical just to show that the sensor that is recorded is in malfunction, and the lasting time T of opening entry malfunction;
The 3rd step, the fault sensor number Nx of due time T x and opposite position relation relatively when utilizing malfunction duration T, fault sensor number N, fault sensor position STAT and sensor to break down, realize fault recognition, with this failure message input store, monitoring finishes again.
2, according to the described automobile wheel speed sensor fault monitoring method of claim 1, it is characterized in that: send alerting signal behind the fault recognition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710157046A CN100587494C (en) | 2007-11-20 | 2007-11-20 | Automobile wheel speed sensor fault monitoring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710157046A CN100587494C (en) | 2007-11-20 | 2007-11-20 | Automobile wheel speed sensor fault monitoring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101339203A true CN101339203A (en) | 2009-01-07 |
| CN100587494C CN100587494C (en) | 2010-02-03 |
Family
ID=40213321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710157046A Active CN100587494C (en) | 2007-11-20 | 2007-11-20 | Automobile wheel speed sensor fault monitoring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100587494C (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101625373B (en) * | 2009-08-04 | 2011-01-19 | 上海汽车集团股份有限公司 | Device and method for judging and detecting signals of rotational speed sensor |
| CN101510095B (en) * | 2009-03-27 | 2011-05-18 | 中国农业大学 | Fault code storage management method for automobile active stabilization control system |
| CN101665109B (en) * | 2009-09-14 | 2011-09-21 | 奇瑞汽车股份有限公司 | Automobile tire anti-theft system and operation method thereof |
| CN104833824A (en) * | 2014-10-28 | 2015-08-12 | 北汽福田汽车股份有限公司 | Monitoring device of wheel speed sensor and vehicle provided with the same |
| CN104931718A (en) * | 2014-03-19 | 2015-09-23 | 英飞凌科技股份有限公司 | Speed Sensor Device, Speed Sensor Method, Electronic Control Unit And Control Method |
| CN106645776A (en) * | 2016-12-08 | 2017-05-10 | 湖北文理学院 | Wheel speed collection system and method for airplane braking system |
| CN107782917A (en) * | 2016-08-24 | 2018-03-09 | 联合汽车电子有限公司 | The fault diagnosis and processing method of vehicle speed sensor |
| CN107843279A (en) * | 2017-11-02 | 2018-03-27 | 宁波中车时代传感技术有限公司 | A kind of sensor circuit with Autonomous test failure and self-regulating function |
| CN109779444A (en) * | 2019-01-25 | 2019-05-21 | 青岛四方庞巴迪铁路运输设备有限公司 | Automatic closing control method for passenger door of railway vehicle |
| CN111381583A (en) * | 2020-03-23 | 2020-07-07 | 北京经纬恒润科技有限公司 | Control system fault monitoring method and device |
| CN111965390A (en) * | 2020-07-13 | 2020-11-20 | 江苏大学 | Wheel speed sensor fault detection method |
| CN113447673A (en) * | 2021-07-30 | 2021-09-28 | 奇瑞汽车股份有限公司 | Wheel speed sensor, control method thereof and automobile |
-
2007
- 2007-11-20 CN CN200710157046A patent/CN100587494C/en active Active
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101510095B (en) * | 2009-03-27 | 2011-05-18 | 中国农业大学 | Fault code storage management method for automobile active stabilization control system |
| CN101625373B (en) * | 2009-08-04 | 2011-01-19 | 上海汽车集团股份有限公司 | Device and method for judging and detecting signals of rotational speed sensor |
| CN101665109B (en) * | 2009-09-14 | 2011-09-21 | 奇瑞汽车股份有限公司 | Automobile tire anti-theft system and operation method thereof |
| CN104931718B (en) * | 2014-03-19 | 2018-05-11 | 英飞凌科技股份有限公司 | Speed sensor implementations, velocity sensor method, electronic control unit and control method |
| CN104931718A (en) * | 2014-03-19 | 2015-09-23 | 英飞凌科技股份有限公司 | Speed Sensor Device, Speed Sensor Method, Electronic Control Unit And Control Method |
| CN104833824A (en) * | 2014-10-28 | 2015-08-12 | 北汽福田汽车股份有限公司 | Monitoring device of wheel speed sensor and vehicle provided with the same |
| CN104833824B (en) * | 2014-10-28 | 2018-10-09 | 北京宝沃汽车有限公司 | The monitoring device of wheel speed sensors and vehicle with it |
| CN107782917A (en) * | 2016-08-24 | 2018-03-09 | 联合汽车电子有限公司 | The fault diagnosis and processing method of vehicle speed sensor |
| CN107782917B (en) * | 2016-08-24 | 2020-01-14 | 联合汽车电子有限公司 | Fault diagnosis and processing method for vehicle speed sensor |
| CN106645776A (en) * | 2016-12-08 | 2017-05-10 | 湖北文理学院 | Wheel speed collection system and method for airplane braking system |
| CN106645776B (en) * | 2016-12-08 | 2019-07-12 | 湖北文理学院 | The measuring wheel speed system and measuring wheel speed method of airplane brake system |
| CN107843279B (en) * | 2017-11-02 | 2020-09-25 | 宁波中车时代传感技术有限公司 | Sensor circuit with self-detection fault and self-regulation functions |
| CN107843279A (en) * | 2017-11-02 | 2018-03-27 | 宁波中车时代传感技术有限公司 | A kind of sensor circuit with Autonomous test failure and self-regulating function |
| CN109779444A (en) * | 2019-01-25 | 2019-05-21 | 青岛四方庞巴迪铁路运输设备有限公司 | Automatic closing control method for passenger door of railway vehicle |
| CN111381583A (en) * | 2020-03-23 | 2020-07-07 | 北京经纬恒润科技有限公司 | Control system fault monitoring method and device |
| CN111965390A (en) * | 2020-07-13 | 2020-11-20 | 江苏大学 | Wheel speed sensor fault detection method |
| CN111965390B (en) * | 2020-07-13 | 2022-06-21 | 江苏大学 | Fault detection method for wheel speed sensor |
| CN113447673A (en) * | 2021-07-30 | 2021-09-28 | 奇瑞汽车股份有限公司 | Wheel speed sensor, control method thereof and automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100587494C (en) | 2010-02-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100587494C (en) | Automobile wheel speed sensor fault monitoring method | |
| US9566966B2 (en) | Method for carrying out a safety function of a vehicle and system for carrying out the method | |
| CN104455380B (en) | Double clutch gearbox OSS failure judgment method | |
| CN105299214B (en) | Gear device crash handling method, apparatus and speed changer | |
| CN107645997B (en) | Device and method for operating a motor vehicle | |
| CN105137123B (en) | The signal processing apparatus of wheel speed sensors | |
| CN105067150A (en) | Motor car axle box temperature detection system and method | |
| CN108248598B (en) | A kind of hybrid electric vehicle driven by wheel hub Failure Control system and method | |
| CN108387342A (en) | EPS non-contact torque sensors fault finding system and its recognition methods | |
| CN110146757B (en) | Electromagnetic valve structural fault diagnosis method for ECAS system | |
| CN109050527B (en) | Vehicle collision detection system | |
| KR20060060025A (en) | Method for monitoring tyre-pressure monitoring systems in a motor vehicle | |
| CN104269813A (en) | Electronic-control automobile actuator fault diagnosis and fault-tolerance control method | |
| CN111380708A (en) | Train axle locking fault diagnosis method and train axle locking fault diagnosis system | |
| CN109297726A (en) | A kind of quiet dynamic fault sunykatuib analysis instrument of motor vehicle braking system and its detection method | |
| CN109507446A (en) | A kind of rotating speed of automobile engine detection method | |
| CN108982132A (en) | A kind of fault detection method of bogie sensor | |
| CN219727751U (en) | Indirect tire pressure monitoring device | |
| CN117715783A (en) | Inspection device for the operation of an electric machine in a vehicle and method for inspecting the operation of an electric machine in a vehicle | |
| CN107031596A (en) | A kind of electric booster braking displacement transducer diagnostic method | |
| CN115782964B (en) | Train axle locking fault diagnosis method, train axle locking fault diagnosis system and train | |
| CN113602248B (en) | Whole vehicle air pressure monitoring method and system | |
| CN108051673A (en) | Ageing test box and ageing testing method based on ABS electronic components | |
| CN211263769U (en) | System for detecting running state of train in tunnel | |
| CN108068787A (en) | Vehicle brake signal diagnostic method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |