WO2020173304A1 - Procédé et dispositif de détection de panne dans un véhicule et véhicule - Google Patents

Procédé et dispositif de détection de panne dans un véhicule et véhicule Download PDF

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Publication number
WO2020173304A1
WO2020173304A1 PCT/CN2020/074882 CN2020074882W WO2020173304A1 WO 2020173304 A1 WO2020173304 A1 WO 2020173304A1 CN 2020074882 W CN2020074882 W CN 2020074882W WO 2020173304 A1 WO2020173304 A1 WO 2020173304A1
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WO
WIPO (PCT)
Prior art keywords
vehicle
light switch
brake light
position information
brake
Prior art date
Application number
PCT/CN2020/074882
Other languages
English (en)
Chinese (zh)
Inventor
李准
范志刚
谢长浩
徐荣昌
李超
乔珍
李文杰
樊阳
丁国峰
李振涛
Original Assignee
长城汽车股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 长城汽车股份有限公司 filed Critical 长城汽车股份有限公司
Publication of WO2020173304A1 publication Critical patent/WO2020173304A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
    • B60R16/0232—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions

Definitions

  • Vehicle fault detection method device and vehicle
  • the present invention relates to the field of vehicle technology, and in particular, to a vehicle fault detection method, device and vehicle. Background technique
  • the brake light switch on the vehicle provides braking signals for each unit of the vehicle.
  • the vehicle's control system has abnormal matching, the vehicle will have problems such as weak acceleration, cruise failure, and abnormally lighted brake lights.
  • the vehicle inspectors when troubleshooting the above-mentioned vehicle faults, the vehicle inspectors cannot obtain accurate judgments based on the real-time vehicle condition data when the vehicle fails, and it is difficult to distinguish whether the fault of the vehicle is the brake light switch itself or the vehicle.
  • the problem of abnormal matching of the control system. Therefore, the method of directly replacing the brake light switch is usually used to solve the existing fault, which not only causes a waste of resources, but also cannot be eliminated based on the actual fault of the vehicle to ensure the normal use of the vehicle.
  • the present invention aims to provide a vehicle fault detection method, device, and vehicle to solve the problem in the prior art that it is difficult to determine the specific fault type when the vehicle is abnormal.
  • the present invention provides a vehicle fault detection method, the method includes: in a case where the vehicle is abnormal, obtaining an output signal of a brake light switch, where the output signal of the brake light switch includes a vehicle body Controller signal and vehicle controller signal;
  • the position information is acquired Information to determine whether the vehicle has an operating failure, where the position information includes position information of the brake pedal and position information of an accelerator pedal;
  • the failure of the vehicle is determined according to the master cylinder pressure information, the output signal of the brake light switch and the target position information.
  • the determining whether the output signal of the brake light switch meets a preset abnormal condition includes:
  • obtaining position information to determine whether the vehicle has an operation failure includes:
  • the method further includes:
  • determining the failure of the vehicle according to master cylinder pressure information, output signal of the brake light switch, and target position information includes:
  • the vehicle fault detection method of the present invention has the following advantages:
  • the vehicle fault detection method of the present invention can determine whether the brake light switch is abnormal according to the output signal of the brake light switch, and then According to the position information and the pressure information of the master cylinder, the faults existing in the vehicle are accurately checked, thereby ensuring the stable operation of the vehicle, simplifying the troubleshooting operation of the vehicle, and improving the efficiency of fault detection.
  • Another object of the present invention is to provide a vehicle fault detection device to solve the problem of difficulty in determining the specific fault type in the case of abnormalities in the vehicle in the prior art.
  • a fault detection device for a vehicle comprising:
  • the signal acquisition module is used to acquire the output signal of the brake light switch when the vehicle is abnormal, and the output signal of the brake light switch includes a vehicle controller signal and a vehicle controller signal;
  • the condition determination module is used for Determine whether the output signal of the brake light switch meets a preset abnormal condition;
  • the information acquisition module is configured to acquire position information when the output signal of the brake light switch meets the abnormal condition to determine whether the vehicle has an operation failure, and the position information includes the brake pedal Position information and position information of the accelerator pedal;
  • the fault determination module is configured to determine the fault of the vehicle based on the master cylinder pressure information, the output signal of the brake light switch, and target position information when the vehicle does not have the operation fault.
  • condition determination module includes:
  • the state comparison sub-module is used to compare the state of the brake light switch represented by the vehicle controller signal and the state of the brake light switch represented by the vehicle controller signal;
  • the condition determination sub-module is used for setting the brake light switch indicated by the body controller signal When the state of is inconsistent with the state of the brake light switch indicated by the vehicle controller signal, it is determined that the abnormal condition is satisfied.
  • the information acquisition module includes:
  • a position information acquisition submodule configured to use a position sensor to acquire position information of the brake pedal and position information of the accelerator pedal;
  • the state determination sub-module is configured to determine whether the brake pedal is in a braking state and the position information of the accelerator pedal according to the position information of the brake pedal to determine whether the accelerator pedal is in a refueling state;
  • the fault determination submodule is configured to determine that the vehicle has the operation fault when the brake pedal is in the braking state and the accelerator pedal is in the refueling state.
  • the device further includes:
  • An information output module configured to output prompt information when the vehicle has the operation failure, so as to prompt the user to perform the operation to remove the operation failure;
  • the protection operation execution module is configured to perform an abnormal protection operation on the vehicle by adopting a preset strategy when the operation failure is not resolved within a preset time;
  • the information sending module is used to send alarm information indicating that the vehicle has the operation failure to the car networking server.
  • the fault determination module includes:
  • the information acquisition sub-module is configured to acquire a master cylinder pressure value at a target time as the master cylinder pressure information and acquire a position value of the brake pedal at the target time as the target position information,
  • the target time is the turn-on time of the brake light switch;
  • the position judgment sub-module is used to judge whether the position value is within the preset position range; the fault determination sub-module is used to determine the master cylinder pressure value at the target time when the position value is not within the preset position range In the case that the pressure of the master cylinder is preset and the signal of the brake light switch meets the preset standard threshold, determining that the vehicle has a brake pedal failure;
  • a pressure judging submodule configured to judge whether the master cylinder pressure value at the target time is within the master cylinder pressure range when the position value is within the preset position range;
  • the fault determination sub-module is further configured to determine that the master cylinder pressure value at the target time is not within the master cylinder pressure range and the signal of the brake light switch meets the preset standard threshold.
  • the vehicle has a failure of the body stability control system.
  • the vehicle fault detection device has the same advantages as the aforementioned vehicle fault detection method over the prior art, and will not be repeated here.
  • Another object of the present invention is to provide a vehicle including the above-mentioned vehicle failure detection device.
  • the present invention provides a computing processing device, including:
  • a memory in which computer-readable codes are stored
  • One or more processors when the computer-readable code is executed by the one or more processors, the computing processing device executes the aforementioned vehicle fault detection method.
  • the present invention provides a computer program, including computer readable code, which when the computer readable code runs on a computing processing device, causes the computing processing device to execute the aforementioned vehicle fault detection method.
  • the present invention provides a computer-readable medium in which the aforementioned computer program is stored.
  • FIG. 1 is a flow chart of steps of an embodiment of a method for detecting a vehicle fault according to an embodiment of the present invention
  • FIG. 2 is a block diagram of the connection structure for implementing the method for detecting a fault in a vehicle according to an embodiment of the present invention
  • Fig. 3 is a flowchart of specific steps of an embodiment of a method for detecting a vehicle fault according to an embodiment of the present invention
  • FIG. 4 is a flowchart of specific steps of an embodiment of a method for detecting a vehicle fault according to an embodiment of the present invention
  • Fig. 5 is the specific steps of an embodiment of a vehicle fault detection method according to an embodiment of the present invention Step flow chart;
  • Fig. 6 is a flowchart of specific steps of an embodiment of a method for detecting a vehicle fault according to an embodiment of the present invention
  • Fig. 7 is a structural block diagram of an embodiment of a vehicle fault detection device according to an embodiment of the present invention.
  • Fig. 8 schematically shows a block diagram of a computing processing device for executing the method according to the present invention.
  • Fig. 9 schematically shows a storage unit for holding or carrying program codes for implementing the method according to the present invention.
  • Fig. 1 there is shown a step flow diagram of an embodiment of a vehicle fault detection method of the present invention.
  • the method may specifically include the following steps:
  • Step 101 Acquire an output signal of the brake light switch when the vehicle is abnormal.
  • the output signal of the brake light switch includes the vehicle body controller signal and the vehicle controller signal.
  • the brake light switch is connected to the body controller and the vehicle controller through two hard-wired signals, and the actual state of the brake light switch is sent to the body controller and the vehicle controller.
  • the body controller can control the interior and exterior lights, door locks, windows, wipers, anti-theft devices and other devices to automatically work; usually the actual state of the brake light switch can be represented by a voltage signal, for example, when the brake pedal is depressed At this time, you can set the body controller signal to high level and the vehicle controller signal to low level.
  • the abnormalities involved in the present invention are, for example, the vehicle is unable to accelerate, the brake lights are turned on abnormally, and the body electronic stability system reports an error, where the acceleration is weak means that the vehicle cannot accelerate when the driver steps on the accelerator pedal.
  • the acceleration is weak means that the vehicle cannot accelerate when the driver steps on the accelerator pedal.
  • the pressure is greater than the set value.
  • Step 102 Determine whether the output signal of the brake light switch meets a preset abnormal condition.
  • the state of the brake light switch indicated by the body controller signal output to the body controller should be the same as the output
  • the state of the brake light switch indicated by the vehicle controller signal to the vehicle controller is consistent, otherwise it means that there is a circuit abnormality (pin disorder, missing components, etc.) at the brake light switch, that is, the abnormal condition is met , You need to troubleshoot the following steps.
  • Step 103 In the case that the output signal of the brake light switch meets the abnormal condition, obtain position information to determine whether the vehicle has an operation failure.
  • the position information includes the position information of the brake pedal and the position information of the accelerator pedal.
  • Step 104 In the case that there is no operational failure of the vehicle, determine the failure of the vehicle according to the master cylinder pressure information, the output signal of the brake light switch, and the target position information.
  • ESP vehicle's body stability control system
  • ESP Electronic Stability Program
  • the vehicle's body stability control system acquired internally the main engine of the vehicle Cylinder pressure signal, combined with the target position information and the output signal of the brake light switch, and then determine whether the actual failure of the vehicle is a brake pedal failure or an internal ESP failure, so as to accurately determine the failure of the vehicle, so as to target the failure Exclude, to ensure the safety of the vehicle.
  • the technical solution of the present invention can be integrated into a controller, and the controller can be set on the entire vehicle as an independent module or integrated on other control modules as a virtual function module that implements the above method.
  • an independent module is used to implement the above-mentioned fault detection method, so that the stored data can be directly read from the controller when the vehicle is checked for abnormality, without relying on data from other units, which simplifies the operation.
  • the vehicle controller and the body stability control system communicate with each other, and the state of the brake pedal is sent to the brake light switch, so that the body controller can judge whether or not according to the actual state of the brake pedal (user demand) Turn on the brake lights, To remind the surrounding vehicles that the current vehicle is decelerating.
  • the brake light switch sends the output signal of the brake light switch to the vehicle controller and the vehicle body controller, and also obtains the vehicle controller signal and the actual voltage of the vehicle body controller signal through two voltage detectors to determine the vehicle Whether the output signals of the brake light switch received by the controller and the body controller are consistent, that is, whether there is an abnormal condition of the brake light switch.
  • the vehicle controller can receive the state of the accelerator pedal to perform an acceleration operation in coordination with other units of the vehicle through the control signal determined by the accelerator pedal controller. Among them, each unit on the vehicle (vehicle controller, body controller, controller, etc.) can communicate data through CAN (Chinese: Controller Area Network Bus; English: Controller Area Network), and send it in the form of CAN messages or Receive data.
  • CAN Controller Area Network Bus
  • English Controller Area Network
  • the technical solution provided by the present invention acquires the output signal of the brake light switch when the vehicle is abnormal, and the output signal of the brake light switch includes the vehicle controller signal and the vehicle controller signal; OK Whether the output signal of the brake light switch meets the preset abnormal condition; in the case that the output signal of the brake light switch meets the abnormal condition, obtain position information to determine whether the vehicle has an operating failure, the position information includes the position of the brake pedal Information and position information of the accelerator pedal; In the case of no operational failure of the vehicle, determine the failure of the vehicle based on the master cylinder pressure information, the output signal of the brake light switch and the target position information.
  • step 102 The determination of whether the output signal of the brake light switch meets a preset abnormal condition in step 102 may include the following steps :
  • Step 1021 Compare the state of the brake light switch indicated by the vehicle controller signal with the state of the brake light switch indicated by the vehicle controller signal.
  • Step 1022 When the state of the brake light switch indicated by the signal of the vehicle controller is inconsistent with the state of the brake light switch indicated by the signal of the vehicle controller, it is determined that the abnormal condition is satisfied.
  • the voltage value of the body controller signal and the voltage value of the vehicle controller signal are respectively obtained, and then according to the preset body control signal and vehicle control signal Voltage standard value.
  • the signal of the body controller should correspond to a high level
  • the signal of the whole vehicle controller should correspond to a low level.
  • the state of the brake light switch indicated is consistent with the state of the brake light switch indicated by the vehicle controller signal.
  • the voltage value of the vehicle controller signal and the voltage value of the vehicle controller signal are both high or low, it means that the states of the brake light switches indicated by them are inconsistent, that is, the abnormal conditions are met.
  • the judgment of the abnormal condition is based on the preset body controller signal should correspond to high level, and the vehicle controller signal should correspond to low level. If the preset body controller signal should correspond to low level If the vehicle controller signal is flat and the vehicle controller signal corresponds to a low level, only when the voltage value of the vehicle controller signal and the voltage value of the vehicle controller signal are high and low respectively, the brake light switch indicated by it will be explained The status of is inconsistent, which is not limited by the present invention.
  • the voltage detector may be a voltage detection function in a certain control unit on the entire vehicle, which can collect the voltage levels corresponding to the aforementioned vehicle controller signal and the vehicle controller signal. It may also be a voltage detector specially set on the entire vehicle, specifically used to measure the voltage value corresponding to the vehicle body controller signal and the vehicle controller signal, which is not specifically limited by the present invention.
  • step 103 when the output signal of the brake light switch meets the abnormal condition, position information is acquired to Determining whether the vehicle has an operational failure can include the following steps:
  • Step 1031 Use the position sensor to obtain the position information of the brake pedal and the position information of the accelerator pedal.
  • two position sensors are used to collect the position information of the brake pedal and the position information of the accelerator pedal, and send the above-mentioned position information to the controller to judge the fault of the vehicle.
  • the position sensor can be built into the vehicle and used to collect the position information of the accelerator pedal and the brake pedal.
  • an external location sensor can also be used to obtain the above-mentioned location information before the vehicle leaves the factory for troubleshooting.
  • Step 1032 Determine whether the brake pedal is in the braking state according to the position information of the brake pedal and the position information of the accelerator pedal to determine whether the accelerator pedal is in the refueling state.
  • the brake pedal or the accelerator pedal when the brake pedal or the accelerator pedal is stepped on, the distance between the brake pedal or the accelerator pedal relative to the bottom of the vehicle body will change, that is, according to the position information obtained in step 1031, it can be determined that the brake pedal or the accelerator pedal is Depressed or not.
  • the brake pedal When the brake pedal is depressed, it means that the brake pedal is in a braking state; when the accelerator pedal is depressed, it means that the accelerator pedal is in a refueling state; and Under normal circumstances, the brake pedal and the accelerator pedal will not be depressed at the same time, that is, when the brake pedal and the accelerator pedal are depressed at the same time, it belongs to the driver's artificial abnormal operation, that is, the following steps can be performed.
  • Step 1033 When the brake pedal is in the braking state and the accelerator pedal is in the refueling state, it is determined that the vehicle has an operation failure.
  • the failure of the vehicle is an operation failure, which is caused by the driver's bad operating habits.
  • the operation failure caused by the driver's bad operating habits may be prompted by the dashboard of the vehicle.
  • the method may further include the following steps:
  • step 105 when the vehicle has an operation failure, a prompt message is output to prompt the user to perform an operation to remove the operation failure.
  • the controller sends the fault information to the ESP and the vehicle controller, and then the vehicle controller
  • the signal is sent to the instrument panel of the vehicle.
  • symbols or texts can be displayed on the instrument panel to remind the driver that the driver performs abnormal operations, such as "operation failure” or "please release the accelerator pedal” to remind the driver to cancel the current operation malfunction.
  • Step 106 If the operation failure is not resolved within a preset time period, a preset strategy is used to perform an abnormal protection operation on the vehicle.
  • Step 107 Send the alarm information indicating that the vehicle has an operational failure to the car networking server.
  • the preset duration can be 1 minute.
  • the operation failure will trigger the brake priority strategy, the vehicle controller and the ESP Will report errors.
  • the controller will also send the fault information to the server corresponding to the Internet of Vehicles through the Internet of Vehicles, and save the fault information on the Internet of Vehicles server, so that when the fault is eliminated, the vehicle inspection personnel can know that the vehicle The failure is caused by the driver's abnormal operation.
  • the above steps can prompt the driver of the vehicle when the abnormality of the vehicle is a man-made operation failure, thereby avoiding the failure rate due to man-made operation, ensuring the safety of the vehicle, and improving the smoothness of the vehicle operation.
  • the fault information is uploaded to the Internet of Vehicles server to record the fault information, so that the vehicle inspector can accurately locate the fault based on the record and improve troubleshooting The efficiency of Low labor costs.
  • step 104 when the output signal of the brake light switch meets the abnormal condition, position information is acquired to Determining whether the vehicle has an operational failure can include the following steps:
  • Step 1041 Obtain the master cylinder pressure value at the target time as the master cylinder pressure information and acquire the brake pedal position value at the target time as the target position information.
  • the target time is the turn-on time of the brake light switch.
  • the controller will read from the ESP the value of the master cylinder pressure at the moment when the brake light switch is just turned on.
  • the position value of the brake pedal and the output signal of the brake light switch (in the above steps, the voltage value of the body controller signal and the voltage value of the vehicle controller signal obtained by the voltage detector) are used to further determine the actual Fault conditions.
  • the ESP buffers the master cylinder pressure value at the moment when the brake light switch is just turned on and the position data of the brake pedal at the moment when the brake light switch is just turned on, acquired by the position sensor, for use in Troubleshoot specific causes when the fault occurs.
  • Step 1042 Determine whether the position value is within a preset position range.
  • Step 1043 When the position value is not within the preset position range, the master cylinder pressure value at the target time is within the preset master cylinder pressure range, and the signal of the brake light switch meets the preset standard threshold, it is determined that the vehicle is braked Pedal failure.
  • the position value of the brake pedal at the moment when the brake light switch is just turned on is not within the preset position range (less than the preset range), and the master cylinder pressure value and the output signal of the brake light switch are within the corresponding threshold range If the brake pedal is sinking or the brake pedal has a large jitter, it can be determined that the abnormality is caused by the failure of the brake pedal.
  • Step 1044 When the position value is within the preset position range, it is judged whether the master cylinder pressure value at the target time is within the master cylinder pressure range.
  • Step 1045 When the master cylinder pressure value at the target time is not within the master cylinder pressure range and the signal of the brake light switch meets the preset standard threshold, it is determined that the vehicle has a body stability control system failure.
  • the device 700 includes:
  • the signal acquisition module 710 is configured to acquire the output signal of the brake light switch when the vehicle is abnormal.
  • the output signal of the brake light switch includes a vehicle controller signal and a vehicle controller signal.
  • the condition determining module 720 is used to determine whether the output signal of the brake light switch meets the preset abnormal condition.
  • the information acquisition module 730 is configured to acquire position information when the output signal of the brake light switch meets the abnormal condition to determine whether the vehicle has an operation failure.
  • the position information includes position information of the brake pedal and position information of the accelerator pedal.
  • the fault determination module 740 is used to determine the fault of the vehicle based on the master cylinder pressure information, the output signal of the brake light switch, and the target position information when the vehicle has no operational fault.
  • condition determination module includes:
  • the state comparison sub-module is used to compare the state of the brake light switch represented by the signal of the vehicle controller and the state of the brake light switch represented by the signal of the vehicle controller;
  • the condition determination sub-module is used to determine that the abnormal condition is met when the state of the brake light switch indicated by the vehicle controller signal is inconsistent with the state of the brake light switch indicated by the vehicle controller signal.
  • the information acquisition module includes:
  • the position information acquisition sub-module is used to acquire the position information of the brake pedal and the position information of the accelerator pedal by using the position sensor;
  • the state determination sub-module is used to determine whether the brake pedal is in the braking state and the position information of the accelerator pedal to determine whether the accelerator pedal is in the refueling state according to the position information of the brake pedal;
  • the fault determination sub-module is used to determine that the vehicle has an operational fault when the brake pedal is in the braking state and the accelerator pedal is in the refueling state.
  • the device further includes:
  • the information output module is used for outputting prompt information when the vehicle has an operation failure, so as to prompt the user to perform an operation to remove the operation failure;
  • the protection operation execution module is used to use the The preset strategy performs abnormal protection operations on the vehicle;
  • the information sending module is used to send alarm information indicating that the vehicle has an operation failure to the car networking server.
  • the fault determination module includes:
  • the information acquisition sub-module is used to acquire the master cylinder pressure value at the target time as the master cylinder pressure information and acquire the position value of the brake pedal at the target time as the target position information.
  • the target time is the turn-on of the brake light switch Moment
  • the position judgment submodule is used to judge whether the position value is within the preset position range; the fault determination submodule is used when the position value is not within the preset position range and the master cylinder pressure value at the target time is within the preset master cylinder pressure range If the brake light switch signal meets the preset standard threshold, it is determined that the vehicle has a brake pedal failure;
  • the pressure judging sub-module is used to judge whether the master cylinder pressure value at the target time is within the master cylinder pressure range when the position value is within the preset position range;
  • the fault determination sub-module is also used to determine that the vehicle has a body stability control system fault when the master cylinder pressure value at the target time is not within the master cylinder pressure range and the signal of the brake light switch meets the preset standard threshold.
  • the present invention also provides a vehicle, which includes the aforementioned control device for vehicle failure detection.
  • the various component embodiments of the present invention may be implemented by hardware, or by software modules running on one or more processors, or by a combination of them.
  • a microprocessor or a digital signal processor (DSP) may be used in practice to implement some or all of the functions of some or all components in the computing processing device according to the embodiments of the present invention.
  • DSP digital signal processor
  • the present invention can also be implemented as a device or device program (for example, a computer program and a computer program product) for executing part or all of the methods described herein.
  • Such a program for implementing the present invention may be stored on a computer-readable medium, or may have the form of one or more signals. Such signals can be downloaded from Internet websites, or provided on carrier signals, or provided in any other form.
  • FIG. 8 shows a computing processing device that can implement the method according to the present invention.
  • the computing processing device traditionally includes a processor 1010 and a computer program product in the form of a memory 1020 or a computer readable medium.
  • the memory 1020 may be an electronic memory such as flash memory, EEPROM (Electrically Erasable Programmable Read Only Memory), EPROM, hard disk, or ROM.
  • the memory 1020 has storage space for the program code 1031 for executing any method steps in the above method 1030.
  • the storage space 1030 for program codes may include various program codes 1031 for implementing various steps in the above method. These program codes can be read out from or written into one or more computer program products.
  • These computer program products include program code carriers such as hard disks, compact disks (CDs), memory cards, or floppy disks.
  • Such a computer program product is usually a portable or fixed storage unit as described with reference to FIG. 9.
  • the storage unit may have storage segments, storage spaces, etc. arranged similarly to the memory 1020 in the computing processing device of FIG. 8.
  • the program code can be compressed in an appropriate form, for example.
  • the storage unit includes computer-readable codes 1031', that is, codes that can be read by, for example, a processor such as 1010. These codes, when run by a computing processing device, cause the computing processing device to execute the method described above. The various steps.
  • any reference signs placed between parentheses should not be constructed to limit the claims.
  • the word “comprising” does not exclude the presence of elements or steps not listed in the claims.
  • the word “a” or “an” before an element does not exclude the presence of multiple such elements.
  • the invention can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In the unit claims enumerating several devices, several of these devices may be embodied in the same hardware item.
  • the use of the words first, second, and third, etc. do not indicate any order. These words can be interpreted as names.

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

La présente invention concerne un procédé et un dispositif permettant de détecter une panne dans un véhicule et un véhicule. Le procédé comprend les étapes suivantes : lorsqu'un véhicule subit une anomalie, acquérir des signaux de sortie d'un commutateur de témoin de frein, les signaux de sortie du commutateur de témoin de frein comprenant un signal de module de commande de carrosserie ainsi qu'un signal d'unité de commande de véhicule ; déterminer si les signaux de sortie du commutateur de témoin de frein satisfont une condition anormale prédéfinie ; si les signaux de sortie du commutateur de témoin de frein satisfont la condition anormale, acquérir des informations d'emplacement permettant de déterminer si une panne de fonctionnement se produit dans le véhicule, les informations d'emplacement comprenant des informations d'emplacement d'une pédale de frein et des informations d'emplacement d'une pédale d'accélérateur ; et si aucune panne de fonctionnement n'est trouvée dans le véhicule, déterminer une panne de véhicule en fonction d'informations de pression d'un maître-cylindre, des signaux de sortie du commutateur de témoin de frein et des informations d'emplacement cible. La présente invention simplifie une opération de dépannage pour un véhicule, ce qui permet d'améliorer l'efficacité de détection de panne.
PCT/CN2020/074882 2019-02-27 2020-02-12 Procédé et dispositif de détection de panne dans un véhicule et véhicule WO2020173304A1 (fr)

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CN201910147742.XA CN110774993B (zh) 2019-02-27 2019-02-27 一种车辆的故障检测方法、装置及车辆
CN201910147742.X 2019-02-27

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CN110774993B (zh) * 2019-02-27 2021-03-26 长城汽车股份有限公司 一种车辆的故障检测方法、装置及车辆
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