CN115199684B - Vehicle braking state detection method, vehicle, device, equipment and storage medium - Google Patents

Vehicle braking state detection method, vehicle, device, equipment and storage medium Download PDF

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Publication number
CN115199684B
CN115199684B CN202211133850.XA CN202211133850A CN115199684B CN 115199684 B CN115199684 B CN 115199684B CN 202211133850 A CN202211133850 A CN 202211133850A CN 115199684 B CN115199684 B CN 115199684B
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vehicle
sensor
brake
abnormal
signal
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CN115199684A (en
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闻鹏
童凯明
李子婷
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Hefei Pinecone Zhizao Intelligent Technology Co ltd
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Hefei Pinecone Zhizao Intelligent Technology Co ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
    • F16D66/02—Apparatus for indicating wear
    • F16D66/021—Apparatus for indicating wear using electrical detection or indication means
    • F16D66/026—Apparatus for indicating wear using electrical detection or indication means indicating different degrees of lining wear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/18—Safety devices; Monitoring
    • B60T17/22—Devices for monitoring or checking brake systems; Signal devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
    • F16D66/02—Apparatus for indicating wear
    • F16D66/021—Apparatus for indicating wear using electrical detection or indication means
    • F16D66/026—Apparatus for indicating wear using electrical detection or indication means indicating different degrees of lining wear
    • F16D66/027—Sensors therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00—Testing of vehicles
    • G01M17/007—Wheeled or endless-tracked vehicles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/005—Testing of electric installations on transport means
    • G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C5/00—Registering or indicating the working of vehicles
    • G07C5/008—Registering or indicating the working of vehicles communicating information to a remotely located station
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C5/00—Registering or indicating the working of vehicles
    • G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
    • G07C5/0808—Diagnosing performance data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Signal Processing (AREA)
  • Medical Informatics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Health & Medical Sciences (AREA)
  • Transportation (AREA)
  • Computing Systems (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Braking Arrangements (AREA)

Abstract

The application relates to a vehicle braking state detection method, a vehicle, a device, equipment and a storage medium. The method is applied to an electronic control unit of a vehicle, the vehicle comprises the electronic control unit and a brake, a sensor and a brake pad are arranged in the brake, the sensor is arranged on the brake pad and faces the brake pad, and the method comprises the following steps: receiving a switch-on signal sent by a sensor, wherein the switch-on signal is a signal sent to an electronic control unit by the sensor under the condition that the sensor detects that the sensor is in contact with a brake pad; detecting a brake signal for the brake pad in response to the turn-on signal; if the brake signal aiming at the brake block is not detected at the current moment, determining that the vehicle is in an abnormal braking state; and reporting abnormal data to a server according to the abnormal braking state of the vehicle. By adopting the method, the abnormity of the vehicle brake can be known in time, so that the vehicle can be maintained in time, the problem of too fast abrasion of the brake pad is relieved, and the personal safety of vehicle drivers is ensured.

Description

Vehicle braking state detection method, vehicle, device, equipment and storage medium
Technical Field
The application relates to the technical field of two-wheeled vehicles, in particular to a vehicle braking state detection method, a vehicle, a device, equipment and a storage medium.
Background
A brake is a component in a brake system that is used to generate a force that counteracts the movement or tendency of movement of the vehicle.
In a two-wheeled vehicle (hereinafter, simply referred to as a vehicle), a drum brake is generally used for the vehicle, and the drum brake includes a brake pad, a brake disc, and the like. During braking, the brake pads contact the brake disc to resist vehicle movement.
When the vehicle breaks down, the condition that the brake pad and the brake disc are still contacted under the normal braking state exists, so that the running resistance of the vehicle is increased, the running speed of the vehicle is reduced, the brake pad is abraded too fast, and the like, and certain hidden danger is generated for personal safety.
Disclosure of Invention
Based on the above, the application provides a vehicle braking state detection method, a vehicle, a device, equipment and a storage medium, wherein the vehicle braking state can be detected in time.
In a first aspect, the present application provides a method for detecting a braking state of a vehicle, which is applied to an electronic control unit of the vehicle, wherein the vehicle includes the electronic control unit and a brake, the brake includes a sensor and a brake pad therein, the sensor is disposed on a brake disc and faces the brake pad, and the method includes:
receiving a switch-on signal sent by the sensor, wherein the switch-on signal is a signal sent to the electronic control unit by the sensor under the condition that the sensor detects that the sensor is in contact with the brake pad;
detecting a brake signal for the brake pad in response to the turn-on signal;
if the brake signal aiming at the brake block is not detected at the current moment, determining that the vehicle is in an abnormal braking state;
and reporting abnormal data to a server according to the abnormal braking state of the vehicle.
In one embodiment, the method further comprises:
and if the brake signal aiming at the brake block is detected at the current moment, determining that the vehicle is in a normal braking state.
In one embodiment, the step of reporting the abnormal data to the server according to the abnormal braking state of the vehicle includes:
determining an abnormal grade according to the induction value of the sensor;
and reporting abnormal data to a server according to the abnormal braking state and the abnormal grade of the vehicle.
In one embodiment, the sensor comprises a pressure sensor and/or a contact sensor.
In a second aspect, the present application further provides a vehicle braking state detection method, including:
receiving abnormal data of a target vehicle, wherein the target vehicle comprises an electronic control unit and a brake, the brake comprises a sensor and a brake pad, the sensor is arranged on a brake disc and faces the brake pad, and the abnormal data is data reported to a server when the electronic control unit receives a switch-on signal sent by the sensor and does not receive a brake signal aiming at the brake pad;
and performing vehicle maintenance and preparation processing according to the abnormal data of the target vehicle.
In one embodiment, the exception data includes an exception level, and the performing vehicle maintenance preparation processing according to the exception data of the target vehicle includes:
sending a maintenance notice aiming at the target vehicle to a specified device under the condition that the abnormal grade represents that the target vehicle is in a primary fault; or,
and under the condition that the abnormal grade represents that the target vehicle is in a secondary fault, if abnormal data of the target vehicle is detected after a preset time length, sending a maintenance notice aiming at the target vehicle to the specified equipment.
In one embodiment, the method further comprises:
determining target abnormal vehicles according to the abnormal data received in a preset time interval, wherein the target abnormal vehicles correspond to the same release batch;
determining the fault reason of the target abnormal vehicle according to the total number of the target abnormal vehicles;
and sending an abnormality report to the specified equipment according to the fault reason of the target abnormal vehicle.
In a third aspect, the present application further provides a vehicle, including an electronic control unit, and a brake, where the brake includes a sensor and a brake pad, and the sensor is disposed on the brake disc and faces the brake pad;
wherein the sensor is used for sending a switch-on signal to the electronic control unit under the condition of detecting the contact with the brake pad;
the electronic control unit is used for detecting a brake signal aiming at the brake pad under the condition of receiving a switch-on signal sent by the sensor and determining that the vehicle is in an abnormal braking state under the condition of not detecting the brake signal;
and the electronic control unit is also used for reporting abnormal data to a server according to the abnormal braking state of the vehicle.
In a fourth aspect, the present application further provides a vehicle braking state detection device, applied to an electronic control unit of a vehicle, the vehicle includes the electronic control unit and a brake, the brake includes a sensor and a brake pad inside, the sensor is disposed on the brake disc and faces the brake pad, the device includes:
the receiving module is used for receiving a switching-on signal sent by the sensor, wherein the switching-on signal is a signal sent to the electronic control unit by the sensor under the condition that the sensor detects that the sensor is in contact with the brake pad;
the detection module is used for responding to the switch-on signal and detecting a brake signal aiming at the brake pad;
the first determining module is used for determining that the vehicle is in an abnormal braking state if the brake signal aiming at the brake pad is not detected at the current moment;
and the reporting module is used for reporting abnormal data to a server according to the abnormal braking state of the vehicle.
In one embodiment, the apparatus further comprises:
and the second determining module is used for determining that the vehicle is in a normal braking state if the brake signal aiming at the brake block is detected at the current moment.
In one embodiment, the turn-on signal includes a sensing value of the sensor, and the reporting module is further configured to:
determining an abnormal grade according to the induction value of the sensor;
and reporting abnormal data to a server according to the abnormal braking state and the abnormal grade of the vehicle.
In one embodiment, the sensor comprises a pressure sensor and/or a contact sensor.
In a fifth aspect, the present application further provides a vehicle braking state detection apparatus, comprising:
the system comprises a receiving module and a processing module, wherein the receiving module is used for receiving abnormal data of a target vehicle, the target vehicle comprises an electronic control unit and a brake, the brake internally comprises a sensor and a brake pad, the sensor is arranged on a brake disc and faces the brake pad, and the abnormal data is data reported to a server under the condition that the electronic control unit receives a switch-on signal sent by the sensor and does not receive a brake signal aiming at the brake pad;
and the maintenance module is used for performing vehicle maintenance and preparation processing according to the abnormal data of the target vehicle.
In one embodiment, the anomaly data includes an anomaly level, and the maintenance module is further configured to:
sending a maintenance notice aiming at the target vehicle to a specified device under the condition that the abnormal grade represents that the target vehicle is in a primary fault; or,
and under the condition that the abnormal grade represents that the target vehicle is in a secondary fault, if abnormal data of the target vehicle is detected after a preset time length, sending a maintenance notice aiming at the target vehicle to the specified equipment.
In one embodiment, the apparatus further comprises:
the system comprises a first determining module, a second determining module and a third determining module, wherein the first determining module is used for determining a target abnormal vehicle according to abnormal data received within a preset time interval, and the target abnormal vehicle corresponds to the same releasing batch;
the second determining module is used for determining the fault reason of the target abnormal vehicle according to the total number of the target abnormal vehicles;
and the sending module is used for sending an abnormality report to the specified equipment according to the fault reason of the target abnormal vehicle.
In a sixth aspect, the present application further provides a computer device. The computer device comprises a memory and a processor, wherein the memory stores a computer program, and the processor realizes any one of the vehicle braking state detection methods when executing the computer program.
In a seventh aspect, the present application further provides a computer-readable storage medium. The computer-readable storage medium, on which a computer program is stored, which, when executed by a processor, implements any of the above-described vehicle braking state detection methods.
In an eighth aspect, the present application further provides a computer program product. The computer program product comprises a computer program which, when executed by a processor, implements any of the above-described vehicle braking state detection methods.
According to the vehicle braking state detection method, the vehicle, the device, the equipment and the storage medium, the sensor is arranged on the brake inner brake disc and faces the brake pad, and the sensor can send a switch-on signal to the electronic control unit of the vehicle when detecting that the sensor is in contact with the brake pad. The electronic control unit detects a brake signal aiming at the brake pad after receiving the switch-on signal sent by the sensor, determines that the vehicle is in an abnormal braking state under the condition that the brake signal aiming at the brake pad is not detected at the current moment, and reports abnormal data to the server according to the abnormal braking state of the vehicle. Based on the vehicle braking state detection method, the vehicle, the device, the equipment and the storage medium, the contact condition of the brake disc and the brake pad can be monitored in real time through the sensor installed on the brake disc, the braking state of the vehicle is determined according to the contact condition of the brake disc and the brake pad and the braking condition of the vehicle, the abnormity of a vehicle brake can be timely known, the vehicle can be timely maintained, the problem that the brake pad is abraded too fast is relieved, and the personal safety of vehicle drivers is guaranteed.
Drawings
FIG. 1 is a flow chart of a vehicle braking status detection method in one embodiment;
FIG. 2 is a flow chart of a vehicle braking status detection method according to one embodiment;
FIG. 3 is a flow chart of a vehicle braking status detection method according to one embodiment;
FIG. 4 is a flow chart of a vehicle braking status detection method according to one embodiment;
FIG. 5 is a schematic illustration of a vehicle braking state detection method according to one embodiment;
FIG. 6 is a block diagram showing the construction of a braking state detection apparatus for a vehicle according to an embodiment;
FIG. 7 is a block diagram showing the construction of a braking state detecting apparatus for a vehicle according to an embodiment;
FIG. 8 is a diagram illustrating an internal structure of a computer device according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Fig. 1 is a flowchart illustrating a vehicle braking state detection method according to an exemplary embodiment in which the present embodiment is applied to an electronic control unit of a vehicle. In this embodiment, the vehicle includes an electronic control unit and a brake, the brake includes a sensor and a brake pad inside, the sensor is disposed on the brake disc and faces the brake pad, and the method includes the steps of:
in step 102, a switch-on signal sent by the sensor is received, wherein the switch-on signal is a signal sent by the sensor to the electronic control unit when the sensor detects that the sensor is in contact with the brake pad.
In the embodiment of the application, the vehicle comprises an electronic control unit and a brake, and a sensor is arranged on the brake disc inside the brake at a position facing the brake pad, and the sensor can be a pressure sensor or a contact sensor. In case the sensor detects contact with the brake pads, a switch-on signal may be sent to the electronic control unit. In one example, a sensor identification of the sensor may be included in the turn-on signal, and the sensor identification may be identification information uniquely identifying the sensor, such as: ID, number, etc. of the sensor.
Since the vehicle is a two-wheeled vehicle, there are front and rear wheels, so two brakes can be provided in the vehicle, and the sensor identification can be used to identify whether the sensor belongs to the front or rear wheel.
The embodiment of the present application does not specifically limit the communication mode between the electronic control unit and the sensor, for example: the electronic control unit and the sensor can realize communication through signal lines, bluetooth, radio and the like.
In step 104, in response to the on signal, detecting a brake signal for the brake pad;
in step 106, if the brake signal for the brake pad is not detected at the current time, it is determined that the vehicle is in an abnormal braking state.
In the embodiment, the brake handle of the vehicle can respond to the control of a user and control the brake pad to move towards the brake disc so as to contact the brake disc to block the motion of the vehicle. The brake handle may send a corresponding brake signal to the electronic control unit in response to a user's control, and the brake signal may include identification information of the brake pad, and the identification information may be used to identify whether the brake pad belongs to the front wheel or the rear wheel.
For example, after the electronic control unit receives the on signal sent by the sensor, the sensor identifier of the sensor is determined from the on signal, the brake or the wheel to which the sensor belongs is determined based on the sensor identifier, and whether the brake signal sent for the brake pad in the brake or the wheel is received at the current moment is detected. For example: if it is determined from the sensor identification that the sensor belongs to the brake of the front wheel, it can be detected whether a brake signal for the brake pad of the front wheel is received at the present time.
Under the condition that the brake signal aiming at the brake pad is not detected at the current moment, namely the current brake handle does not execute the braking action, but the brake pad is still contacted with the brake disc, so that the current abnormal braking state of the vehicle can be determined.
In step 108, according to the abnormal braking state of the vehicle, reporting abnormal data to the server.
For example, after determining that the vehicle is in an abnormal braking state, the server may report abnormal data to the server, where the abnormal data may carry identification information of the vehicle and the abnormal braking state of the vehicle, or may further include a sensor identification, so that the server may execute fault maintenance processing for the vehicle according to the abnormal data after receiving the abnormal data of the vehicle.
According to the vehicle braking state detection method provided by the embodiment of the application, the sensor is arranged on the brake inner brake disc and faces the position of the brake pad, and the sensor can send a switch-on signal to the electronic control unit of the vehicle under the condition that the sensor detects that the sensor is in contact with the brake pad. The electronic control unit detects a brake signal aiming at the brake pad after receiving the switch-on signal sent by the sensor, determines that the vehicle is in an abnormal braking state under the condition that the brake signal aiming at the brake pad is not detected at the current moment, and reports abnormal data to the server according to the abnormal braking state of the vehicle. According to the vehicle braking state detection method provided by the embodiment of the application, the contact condition of the brake disc and the brake pad can be monitored in real time through the sensor installed on the brake disc, the braking state of the vehicle can be determined according to the contact condition of the brake disc and the brake pad and the braking condition of the vehicle, the abnormity of the vehicle brake can be timely known, the vehicle can be timely maintained, the problem that the brake pad is abraded too fast is relieved, and the personal safety of a vehicle driver is ensured.
In an exemplary embodiment, if a braking signal for the brake pad is detected at the current time, it is determined that the vehicle is in a normal braking state.
For example, after receiving the switch-on signal sent by the sensor and detecting the brake signal for the brake pad facing the sensor, it may be determined that the current contact between the brake pad and the brake disc is caused by the brake action performed by the current brake lever, and thus it may be determined that the vehicle is currently in the normal braking state, and at this time, it is not necessary to report data to the server.
Based on the vehicle braking state detection method provided by the embodiment of the application, the contact condition of the brake disc and the brake pad can be monitored in real time through the sensor installed on the brake disc, the braking state of the vehicle is determined according to the contact condition of the brake disc and the brake pad and the braking condition of the vehicle, and the personal safety of a vehicle driver can be guaranteed.
In an exemplary embodiment, the on signal includes a sensing value of a sensor, and as shown in fig. 2, in step 108, reporting abnormal data to the server according to an abnormal braking state of the vehicle includes:
in step 202, determining an abnormal grade according to the induction value of the sensor;
in step 204, according to the abnormal braking state and the abnormal level of the vehicle, reporting abnormal data to the server.
In the embodiment of the present application, the sensing value may be an indication of the contact degree between the sensor and the brake pad. For example: taking the sensor as an example of a pressure sensor, the sensed value may include a pressure value applied to the sensor. And then after receiving the induction value of the sensor, the electronic control unit may determine a corresponding abnormality level according to the induction value, where the abnormality level may be used to characterize a current failure degree of the vehicle, for example: the higher the abnormality level, the higher the degree of the current failure of the vehicle is characterized.
For example, still taking the sensor as the pressure sensor as an example, pressure value ranges corresponding to different abnormal levels may be preset, and after receiving a switch-on signal of the sensor, the electronic control unit may determine the pressure value range to which the pressure value carried in the switch-on signal belongs, and then use the abnormal level corresponding to the pressure value range as the current abnormal level of the vehicle.
After the current abnormal grade of the vehicle is obtained, abnormal data can be reported to the server, wherein the abnormal data comprises the abnormal braking state, the abnormal grade and the identification information of the vehicle, and therefore after the server receives the abnormal data, the server can determine the maintenance time, the maintenance mode and the like aiming at the vehicle according to the abnormal grade.
Based on the vehicle braking state detection method provided by the embodiment of the application, the contact condition of the brake disc and the brake pad can be monitored in real time through the sensor installed on the brake disc, the braking state of the vehicle is determined according to the contact condition of the brake disc and the brake pad and the braking condition of the vehicle, the abnormity and the abnormity grade of the vehicle brake can be timely known, the vehicle can be timely maintained, the problem that the brake pad is abraded too fast is relieved, and the personal safety of vehicle drivers is guaranteed.
Fig. 3 is a flowchart illustrating a method for detecting a braking state of a vehicle according to an exemplary embodiment, which takes the method as an example applied to a server, and includes the steps of:
in step 302, receiving abnormal data of a target vehicle, wherein the target vehicle comprises an electronic control unit and a brake, the brake comprises a sensor and a brake pad, the sensor is arranged on a brake disc and faces the brake pad, and the abnormal data is data reported to a server when the electronic control unit receives a switch-on signal sent by the sensor and does not receive a brake signal aiming at the brake pad;
in step 304, a vehicle repair preparation process is performed based on the abnormality data of the target vehicle.
In the embodiment of the application, after a sensor in a vehicle contacts a brake pad, a switch-on signal is sent to an electronic control unit, after the electronic control unit receives the switch-on signal, whether a brake signal for the brake pad corresponding to the sensor is received or not is detected by responding to the switch-on information, if the brake signal for the brake pad corresponding to the sensor is not detected, it can be determined that the vehicle is currently in an abnormal braking state, and corresponding abnormal data can be reported by a server.
After the server receives the abnormal data, the server can determine that the vehicle is in an abnormal braking state at present according to the abnormal data, and can inform maintenance personnel to carry out maintenance processing on the vehicle.
According to the vehicle braking state detection method provided by the embodiment of the application, the server receives abnormal data of a target vehicle, wherein the target vehicle comprises an electronic control unit and a brake, the brake comprises a sensor and a brake pad, the sensor is arranged on the brake disc and faces the brake pad, and the abnormal data is data reported to the server when the electronic control unit receives a switch-on signal sent by the sensor and does not receive a brake signal aiming at the brake pad. The server can then perform vehicle maintenance reporting processing based on the abnormal data of the target vehicle. Based on the vehicle braking state detection method provided by the embodiment of the application, the contact condition of the brake disc and the brake pad can be monitored in real time through the sensor installed on the brake disc, the braking state of the vehicle is determined according to the contact condition of the brake disc and the brake pad and the braking condition of the vehicle, the abnormity of the vehicle brake can be timely known, the vehicle can be timely maintained, the problem that the brake pad is abraded too fast is relieved, and the personal safety of a vehicle driver is ensured.
In an exemplary embodiment, the anomaly data includes an anomaly level, and in step 304, the vehicle repair preparation process is performed according to the anomaly data of the target vehicle, and includes:
under the condition that the abnormal grade represents that the target vehicle is in a first-grade fault, sending a maintenance notice aiming at the target vehicle to the specified equipment; or,
and under the condition that the abnormal grade represents that the target vehicle is in a secondary fault, if abnormal data of the target vehicle is detected after a preset time length, sending a maintenance notice aiming at the target vehicle to the specified equipment.
In the embodiment of the present application, after the abnormal data is received, a target vehicle with an abnormal condition may be determined based on the vehicle identifier in the abnormal data, and a processing manner for the target vehicle may be determined according to the abnormal level in the abnormal data, for example: when the abnormal level indicates that the target vehicle is in a light fault, an observation period (preset duration) can be set for the target vehicle, observation on the target vehicle is executed in the observation period, if abnormal data of the target vehicle can still be received after the observation period is ended, the target vehicle can be determined to be in a fault indeed, and maintenance processing is performed on the target vehicle, or after the observation period is ended, the abnormal data of the target vehicle is not received, the target vehicle can be determined to be in a break-in period before, but not in a fault, maintenance is not performed on the target vehicle, and observation on the target vehicle is removed.
For example, the target vehicle may include a primary fault and a secondary fault, wherein the primary fault corresponds to a higher degree of vehicle fault than the secondary fault. When the abnormal level indicates that the target vehicle is in a first-level fault, it can be determined that the target vehicle does have the fault and needs to be repaired, so a repair notification for the target vehicle can be sent to a specified device, where the specified device may include a device for logging in an account of a manager or may also include a device for logging in a user account of a user currently driving the target vehicle.
Or, when the abnormal level indicates that the target vehicle is in a secondary fault, it cannot be directly confirmed whether the target vehicle is in a running-in state or has a fault, so that abnormal data of the target vehicle can be detected after a preset time period, and if the abnormal data for the target vehicle are still received, it can be determined that the target vehicle has a fault indeed, and the target vehicle needs to be maintained, so that a maintenance notification for the target vehicle can be sent to the specified device.
In the case where the designated device includes a device logged in to the administrator account, the repair notification may include information such as an identifier and an abnormality level of the target vehicle, so that the administrator may notify the repair person of repairing the target vehicle after receiving the repair notification for the target vehicle through the designated device.
When the designated device comprises a device for logging in a user account of a user who drives the target vehicle at present, the maintenance notification can comprise information such as the abnormal grade of the target vehicle, so that the user can know the abnormality of the target vehicle in time, and then replace the vehicle in time, and personal safety of the user is guaranteed.
According to the vehicle braking state detection method provided by the embodiment of the application, the contact condition of the brake disc and the brake pad can be monitored in real time through the sensor installed on the brake disc, the braking state of the vehicle can be determined according to the contact condition of the brake disc and the brake pad and the braking condition of the vehicle, the abnormity and the abnormity grade of the vehicle brake can be timely obtained, the vehicle can be timely maintained, the problem that the brake pad is abraded too fast is solved, the personal safety of a vehicle driver is ensured, the processing mode aiming at the vehicle can be determined based on the abnormity grade, the maintenance efficiency of the vehicle can be improved, and invalid maintenance is avoided.
In an exemplary embodiment, referring to fig. 4, the method further includes:
in step 402, determining a target abnormal vehicle according to abnormal data received within a preset time interval, wherein the target abnormal vehicle corresponds to the same delivery batch;
in step 404, determining a failure cause of the target abnormal vehicle according to the total number of the target abnormal vehicles;
in step 406, an abnormality report is sent to the specified device according to the cause of the failure of the target abnormal vehicle.
In this embodiment, the preset time interval may be a preset time interval, for example, a week, a month, and the like. That is, the server may obtain the target abnormal vehicles released in the same releasing batch according to the abnormal vehicles corresponding to the abnormal data received within the preset time interval.
Counting the total number of the target abnormal vehicles, namely counting the number of vehicles with abnormality in the same release batch, and determining the fault reason of the target abnormal vehicles based on the total number of the target abnormal vehicles, for example: in the case where the total number of target abnormal vehicles is large (for example, the total number of target abnormal vehicles is greater than or equal to the total number threshold, or the proportion of the total number of target abnormal vehicles released in the same release remark is greater than or equal to the proportion threshold), the cause of the failure may be determined as an assembly problem, and in the case where the total number of target abnormal vehicles is small (for example, the total number of target abnormal vehicles is less than the total number threshold, or the total number of target abnormal vehicles released in the same release remark is less than the proportion threshold), the cause of the failure may be determined as a use problem.
After the failure cause of the target abnormal vehicle is determined, an abnormal report may be sent to the specified device, where the abnormal report may include the vehicle identifier of the target abnormal vehicle and the abnormal cause, so that a manager may obtain the corresponding abnormal report through the specified device, and perform processing such as returning to a factory, batch maintenance, and the like on the vehicle according to the abnormal report.
In order to make the embodiments of the present application better understood by those skilled in the art, the embodiments of the present application are described below by specific examples.
Referring to fig. 5, a contact/pressure sensor may be installed on a brake disc inside a brake of a vehicle at a position where the sensor is not manually touched and faces the brake pad, and a sensor identification of the sensor may correspond to a vehicle identification. When the brake handle is pressed, the sensor is switched on when the brake pad is contacted with the sensor, and a switching-on signal is sent to the electronic control unit, and the electronic control unit receives a brake signal aiming at the brake pad and the switching-on signal of the sensor at the moment, so that the brake can be judged to be in a normal braking state at the moment.
When the brake lever is not pressed or the vehicle is accelerated, the brake pad is still contacted with the sensor, the sensor is switched on, and a switching-on signal is sent to the electronic control unit, the electronic control unit does not receive the brake signal aiming at the brake pad at the moment and receives the switching-on signal of the sensor, so that the brake can be judged to be in an abnormal braking state at the moment.
In the case where it is determined that the brake is in the abnormal braking state, the electronic control unit may report the abnormal data of the vehicle to the server based on the abnormal braking state. After the server receives the abnormal data of the vehicles, risk analysis can be carried out, and whether batch assembly problems or use problems exist can be judged through abnormal feedback of the number of the vehicles. When the vehicle needs to be maintained, the city operation and maintenance terminal can be informed to maintain the fault vehicle.
Based on the vehicle braking state detection method that this application embodiment provided, can whether interlock through the sensor can real-time supervision stopper to judge whether normal brake state is, and then can in time maintain the vehicle, further improvement vehicle mileage, less vehicle resistance of traveling, less friction disc wearing and tearing, few vehicle brake failure and personnel's incident.
It should be understood that, although the steps in the flowcharts related to the embodiments as described above are sequentially displayed as indicated by arrows, the steps are not necessarily performed sequentially as indicated by the arrows. The steps are not limited to being performed in the exact order illustrated and, unless explicitly stated herein, may be performed in other orders. Moreover, at least a part of the steps in the flowcharts related to the embodiments described above may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the execution order of the steps or stages is not necessarily sequential, but may be rotated or alternated with other steps or at least a part of the steps or stages in other steps.
In an exemplary embodiment, a vehicle is provided, which includes an electronic control unit, a brake, the brake including a sensor and a brake pad inside, the sensor being disposed on the brake disc and facing the brake pad;
the sensor is used for sending a switch-on signal to the electronic control unit under the condition of detecting the contact with the brake pad; the electronic control unit is used for detecting a brake signal aiming at the brake pad under the condition of receiving the switch-on signal sent by the sensor and determining that the vehicle is in an abnormal braking state under the condition of not detecting the brake signal; and the electronic control unit is also used for reporting abnormal data to the server according to the abnormal braking state of the vehicle.
In the embodiment of the application, the brake inside the vehicle comprises a brake disc, a sensor and a brake pad, wherein the sensor is positioned on the brake disc and faces the brake pad, so that the sensor is contacted with the sensor when the brake pad is contacted with the brake disc to perform braking, and the sensor can send a switch-on signal to the electronic control unit when the sensor is contacted with the brake pad. After receiving the switch-on signal, the electronic control unit can determine the current braking state by detecting whether a braking signal aiming at the brake pad corresponding to the sensor is received, and report corresponding abnormal data to the server under the condition that the vehicle is determined to be in the abnormal braking state, so that the server can carry out risk analysis according to the abnormal data. It should be noted that, for a specific process, reference may be made to the related description of the foregoing embodiment, and details are not described herein in the embodiment of the present application.
Based on the vehicle that this application embodiment provided, can be through installing the contact condition of sensor real-time supervision brake disc on the brake disc with the brake block, and then according to the contact condition of brake disc with the brake block and the brake condition of vehicle, confirm the brake state of vehicle, can in time learn the unusual of vehicle brake to can in time maintain the vehicle, alleviate the too fast problem of brake block wearing and tearing, guaranteed vehicle driver's personal safety.
Based on the same inventive concept, the embodiment of the application also provides a vehicle braking state detection device for realizing the vehicle braking state detection method. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the method, so that specific limitations in one or more embodiments of the vehicle braking state detection device provided below can be referred to the limitations in the vehicle braking state detection method above, and are not described herein again.
In one embodiment, as shown in fig. 6, there is provided a vehicle braking state detection apparatus 600 applied to an electronic control unit of a vehicle, the vehicle including the electronic control unit and a brake, the brake including a sensor and a brake pad therein, the sensor being disposed on a brake disc and facing the brake pad, the apparatus including: a receiving module 602, a detecting module 604, a first determining module 606 and a reporting module 608.
A receiving module 602, configured to receive a switch-on signal sent by the sensor, where the switch-on signal is a signal sent by the sensor to the electronic control unit when the sensor detects that the sensor is in contact with the brake pad;
a detecting module 604 for detecting a braking signal for the brake pad in response to the switch-on signal;
a first determining module 606, configured to determine that the vehicle is in an abnormal braking state if a braking signal for the brake pad is not detected at the current time;
a reporting module 608, configured to report abnormal data to a server according to the abnormal braking state of the vehicle.
According to the vehicle braking state detection device provided by the embodiment of the application, the sensor is arranged on the brake inner brake disc and faces the position of the brake pad, and the sensor can send a switch-on signal to the electronic control unit of the vehicle under the condition that the sensor detects that the sensor is in contact with the brake pad. The electronic control unit detects a brake signal aiming at the brake pad after receiving the switch-on signal sent by the sensor, determines that the vehicle is in an abnormal braking state under the condition that the brake signal aiming at the brake pad is not detected at the current moment, and reports abnormal data to the server according to the abnormal braking state of the vehicle. Based on vehicle braking state detection device that this application embodiment provided, can be through the contact condition of installing sensor real-time supervision brake disc on the brake disc with the brake block, and then according to the contact condition of brake disc and brake block and the brake condition of vehicle, confirm the brake state of vehicle, can in time learn the unusual of vehicle brake to can in time maintain the vehicle, alleviate the too fast problem of brake block wearing and tearing, guaranteed vehicle driver's personal safety.
In one embodiment, the apparatus further comprises:
and the second determining module is used for determining that the vehicle is in a normal braking state if the brake signal aiming at the brake block is detected at the current moment.
In one embodiment, the turn-on signal includes a sensing value of the sensor, and the reporting module 608 is further configured to:
determining an abnormal grade according to the induction value of the sensor;
and reporting abnormal data to a server according to the abnormal braking state and the abnormal grade of the vehicle.
In one embodiment, the sensor comprises a pressure sensor and/or a contact sensor.
In one embodiment, as shown in fig. 7, there is provided a vehicle braking state detection apparatus 700, the apparatus including: a receiving module 702 and a maintenance module 704.
A receiving module 702, configured to receive abnormal data of a target vehicle, where the target vehicle includes an electronic control unit and a brake, the brake includes a sensor and a brake pad inside, the sensor is disposed on a brake disc and faces the brake pad, and the abnormal data is data that is reported to a server when the electronic control unit receives a switch-on signal sent by the sensor and does not receive a brake signal for the brake pad;
and the maintenance module 704 is used for performing vehicle maintenance and repair processing according to the abnormal data of the target vehicle.
According to the vehicle braking state detection device provided by the embodiment of the application, the server receives abnormal data of a target vehicle, wherein the target vehicle comprises an electronic control unit and a brake, the brake comprises a sensor and a brake pad, the sensor is arranged on the brake disc and faces the brake pad, and the abnormal data is data reported to the server when the electronic control unit receives a switch-on signal sent by the sensor and does not receive a brake signal aiming at the brake pad. The server can then perform vehicle maintenance reporting processing based on the abnormal data of the target vehicle. Based on vehicle braking state detection device that this application embodiment provided, can be through the contact condition of installing sensor real-time supervision brake disc on the brake disc with the brake block, and then according to the contact condition of brake disc and brake block and the brake condition of vehicle, confirm the brake state of vehicle, can in time learn the unusual of vehicle brake to can in time maintain the vehicle, alleviate the too fast problem of brake block wearing and tearing, guaranteed vehicle driver's personal safety.
In one embodiment, the anomaly data includes an anomaly level, and the maintenance module 704 is further configured to:
sending a maintenance notice aiming at the target vehicle to a specified device under the condition that the abnormal grade represents that the target vehicle is in a primary fault; or,
and under the condition that the abnormal grade represents that the target vehicle is in a secondary fault, if abnormal data of the target vehicle is detected after a preset time length, sending a maintenance notice aiming at the target vehicle to the specified equipment.
In one embodiment, the apparatus further comprises:
the system comprises a first determining module, a second determining module and a third determining module, wherein the first determining module is used for determining a target abnormal vehicle according to abnormal data received within a preset time interval, and the target abnormal vehicle corresponds to the same releasing batch;
the second determining module is used for determining the fault reason of the target abnormal vehicle according to the total number of the target abnormal vehicles;
and the sending module is used for sending an abnormality report to the specified equipment according to the fault reason of the target abnormal vehicle.
The respective modules in the vehicle braking state detection apparatus described above may be implemented in whole or in part by software, hardware, and a combination thereof. The modules can be embedded in a hardware form or independent of a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as shown in fig. 8. The computer device includes a processor, a memory, a communication interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless communication can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a vehicle braking state detection method. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on a shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.
It will be appreciated by those skilled in the art that the configuration shown in fig. 8 is a block diagram of only a portion of the configuration associated with the present application, and is not intended to limit the computing device to which the present application may be applied, and that a particular computing device may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device is further provided, which includes a memory and a processor, the memory stores a computer program, and the processor implements the steps of the above method embodiments when executing the computer program.
In an embodiment, a computer-readable storage medium is provided, on which a computer program is stored which, when being executed by a processor, carries out the steps of the above-mentioned method embodiments.
In an embodiment, a computer program product is provided, comprising a computer program which, when being executed by a processor, carries out the steps of the above-mentioned method embodiments.
It should be noted that, the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, presented data, etc.) referred to in the present application are information and data authorized by the user or sufficiently authorized by each party.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, databases, or other media used in the embodiments provided herein can include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high-density embedded nonvolatile Memory, resistive Random Access Memory (ReRAM), magnetic Random Access Memory (MRAM), ferroelectric Random Access Memory (FRAM), phase Change Memory (PCM), graphene Memory, and the like. Volatile Memory can include Random Access Memory (RAM), external cache Memory, and the like. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others. The databases referred to in various embodiments provided herein may include at least one of relational and non-relational databases. The non-relational database may include, but is not limited to, a block chain based distributed database, and the like. The processors referred to in the various embodiments provided herein may be, without limitation, general purpose processors, central processing units, graphics processors, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, or the like.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims (10)

1. A vehicle braking state detection method is characterized by being applied to an electronic control unit of a vehicle, wherein the vehicle comprises the electronic control unit and a brake, the brake internally comprises a sensor and a brake pad, the sensor is arranged on a brake disc and faces the brake pad, and the method comprises the following steps:
receiving a switch-on signal sent by the sensor, wherein the switch-on signal is a signal sent to the electronic control unit by the sensor when the sensor detects that the sensor is in contact with the brake pad, and the switch-on signal comprises an induction numerical value of the sensor;
detecting a brake signal for the brake pad in response to the turn-on signal;
if the brake signal aiming at the brake block is not detected at the current moment, determining that the vehicle is in an abnormal braking state;
determining an abnormal grade according to the induction value of the sensor;
and reporting abnormal data to a server according to the abnormal braking state and the abnormal grade of the vehicle.
2. The method of claim 1, further comprising:
and if the brake signal aiming at the brake block is detected at the current moment, determining that the vehicle is in a normal braking state.
3. The method of claim 1, wherein the sensor comprises a pressure sensor and/or a contact sensor.
4. A vehicle braking state detection method, characterized by comprising:
receiving abnormal data of a target vehicle, wherein the target vehicle comprises an electronic control unit and a brake, the brake comprises a sensor and a brake pad, the sensor is arranged on a brake disc and faces the brake pad, the abnormal data is data reported to a server when the electronic control unit receives a switch-on signal sent by the sensor and does not receive a brake signal aiming at the brake pad, the abnormal data comprises an abnormal grade, and the switch-on signal is a signal sent to the electronic control unit when the sensor detects that the sensor is in contact with the brake pad;
sending a maintenance notice aiming at the target vehicle to a specified device under the condition that the abnormal grade represents that the target vehicle is in a primary fault; or,
and under the condition that the abnormal grade represents that the target vehicle is in a secondary fault, if abnormal data of the target vehicle is detected after a preset time length, sending a maintenance notice aiming at the target vehicle to the specified equipment.
5. The method of claim 4, further comprising:
determining target abnormal vehicles according to the abnormal data received within a preset time interval, wherein the target abnormal vehicles correspond to the same release batch;
determining the fault reason of the target abnormal vehicle according to the total number of the target abnormal vehicles;
and sending an abnormality report to the specified equipment according to the fault reason of the target abnormal vehicle.
6. A vehicle is characterized by comprising an electronic control unit and a brake, wherein the brake internally comprises a sensor and a brake pad, and the sensor is arranged on the brake pad and faces the brake pad;
the sensor is used for sending a switching-on signal to the electronic control unit under the condition that the sensor detects that the sensor is in contact with the brake pad, wherein the switching-on signal comprises an induction numerical value of the sensor;
the electronic control unit is used for detecting a brake signal aiming at the brake pad under the condition of receiving a switch-on signal sent by the sensor and determining that the vehicle is in an abnormal braking state under the condition of not detecting the brake signal;
and the electronic control unit is also used for determining an abnormal grade according to the induction value of the sensor and reporting abnormal data to a server according to the abnormal braking state and the abnormal grade of the vehicle.
7. The utility model provides a vehicle braking state detection device, its characterized in that is applied to the electronic control unit of vehicle, the vehicle includes electronic control unit and stopper, inside sensor and the brake pad of including of stopper, the sensor sets up on the brake disc and towards the brake pad, the device includes:
the receiving module is used for receiving a connection signal sent by the sensor, the connection signal is a signal sent to the electronic control unit by the sensor when the sensor detects that the sensor is in contact with the brake pad, and the connection signal comprises an induction value of the sensor;
the detection module is used for responding to the switch-on signal and detecting a brake signal aiming at the brake pad;
the first determining module is used for determining that the vehicle is in an abnormal braking state if the brake signal aiming at the brake pad is not detected at the current moment;
the reporting module is used for determining the abnormal grade according to the induction value of the sensor; and reporting abnormal data to a server according to the abnormal braking state and the abnormal grade of the vehicle.
8. A vehicle braking state detection apparatus, applied to a server, the apparatus comprising:
the system comprises a receiving module and a processing module, wherein the receiving module is used for receiving abnormal data of a target vehicle, the target vehicle comprises an electronic control unit and a brake, the brake comprises a sensor and a brake pad, the sensor is arranged on a brake disc and faces the brake pad, the abnormal data is data reported to a server by the electronic control unit under the condition that the electronic control unit receives a switch-on signal sent by the sensor and does not receive a brake signal aiming at the brake pad, the abnormal data comprises an abnormal grade, and the switch-on signal is a signal sent to the electronic control unit by the sensor under the condition that the sensor detects that the sensor is in contact with the brake pad;
the maintenance module is used for sending a maintenance notice aiming at the target vehicle to a specified device under the condition that the abnormity level represents that the target vehicle is in a primary fault; or,
and under the condition that the abnormal grade represents that the target vehicle is in a secondary fault, if abnormal data of the target vehicle is detected after a preset time length, sending a maintenance notice aiming at the target vehicle to the specified equipment.
9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the method of any of claims 1 to 5.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 5.
CN202211133850.XA 2022-09-19 2022-09-19 Vehicle braking state detection method, vehicle, device, equipment and storage medium Active CN115199684B (en)

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CN112224324A (en) * 2020-09-23 2021-01-15 摩拜(北京)信息技术有限公司 Brake control method of electric bicycle and electric bicycle
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0093657A1 (en) * 1982-04-27 1983-11-09 BENDIX France Disk brake pads wear state monitoring process, wear indicator and disk brake
CN106678214A (en) * 2015-11-09 2017-05-17 哈尔滨大通瑞持网络有限公司 Method for monitoring car brake pad through electronic tactile sensor
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