Test device and test system for a hydraulic brake controller

Abstract

The utility model provides a kind of testing device and testing system of hydraulic brake controller, this test circuit is applied to hydraulic brake field, and the testing device includes: the hydraulic brake controller to be tested and at least one test circuit, hydraulic brake controller is electrically connected with each test circuit, and each test circuit is also electrically connected with fault diagnosis device;Each test circuit is used to receive analog fault signal input by fault diagnosis device, and generates fault information based on analog fault signal, analog fault signal corresponds with the component fault of hydraulic brake controller;Hydraulic brake controller is used to monitor fault information, and outputs fault information to fault diagnosis device, and fault diagnosis device is used to verify whether the diagnosis function of hydraulic brake controller is correct based on fault information and expected fault information, and expected fault information corresponds with analog fault signal.The utility model can reduce the cost of testing hydraulic brake controller.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic braking, and more specifically, to a testing device and testing system for a hydraulic braking controller in the field of hydraulic braking. Background Technology

[0002] With the rapid development of new energy vehicles and Internet of Things (IoT) technology, vehicle hydraulic braking systems are also developing rapidly. A hydraulic braking system is a braking device that uses the pressure of brake fluid to transmit braking force, enabling the vehicle to decelerate or park. The hydraulic braking system integrates components such as sensors, controllers, and actuators. Among these, the controller can determine whether a fault has occurred in the hydraulic braking system, thus enabling timely detection of faults and ensuring vehicle driving safety.

[0003] In related technologies, when testing whether the controller of a hydraulic braking system is functioning properly, a test environment is set up to test whether the controller can detect faults in the hydraulic braking system. However, during the testing process, there are many wires between the various components in the hydraulic braking system, which can easily lead to a waste of manpower and damage to the controller. Utility Model Content

[0004] This invention provides a testing device and system for hydraulic brake controllers, which can reduce the cost of testing hydraulic brake controllers.

[0005] In a first aspect, a testing device for a hydraulic brake controller is provided, the testing circuit comprising: The hydraulic brake controller to be tested and at least one test circuit, wherein the hydraulic brake controller is electrically connected to each of the test circuits and each of the test circuits is also electrically connected to a fault diagnosis device. Each of the test circuits is used to receive the simulated fault signal input by the fault diagnosis device and generate fault information based on the simulated fault signal, which corresponds to the component fault of the hydraulic brake controller. The hydraulic brake controller is used to monitor the fault information and output the fault information to the fault diagnosis device. The fault diagnosis device is used to verify whether the diagnostic function of the hydraulic brake controller is correct based on the fault information and the expected fault information, which corresponds to the simulated fault signal.

[0006] In this invention, a test circuit receives simulated fault signals input by the fault diagnosis device and generates fault information based on these signals. The hydraulic brake controller monitors this fault information and outputs it to the fault diagnosis device. In other words, by using different test circuits to check whether different detection functions of the hydraulic brake controller are functioning correctly, the wiring on the hydraulic brake controller is reduced, manpower is minimized, and detection costs are lowered during the process of detecting faults in vehicle components. This, in turn, extends the service life of the hydraulic brake controller.

[0007] In some embodiments, the test circuit includes: a first switch module, an indicator light, a first power supply terminal, and a first ground terminal; The first switch module is electrically connected to the hydraulic brake controller and the fault diagnosis device, respectively. The first switch module is used to receive the simulated fault signal input by the fault diagnosis device, and control the first switch module to be in the off state based on the simulated fault signal, or control the fault diagnosis device to be electrically connected to one of the indicator light, the first power supply terminal and the first ground terminal based on the simulated fault signal. This indicator light is used to indicate whether the hydraulic braking system is malfunctioning.

[0008] In some embodiments, the first switching module includes a first switch and a first resistor; The control terminal of the first switch is electrically connected to the hydraulic brake controller and the fault diagnosis device, respectively. The first output terminal of the first switch is electrically connected to the first power supply terminal; The second output terminal of the first switch is electrically connected to the first terminal of the first resistor; The second terminal of the first resistor is electrically connected to the indicator light. The third output terminal of the first switch is electrically connected to the first ground terminal.

[0009] This invention describes the connection between a hydraulic brake controller and a test circuit. The test circuit is used to test whether the hydraulic brake controller can detect indicator light malfunctions in a timely manner. Specifically, a single-pole four-throw switch controls the fault diagnosis device to be electrically connected to one of the indicator light, the first power supply terminal, and the first ground terminal to generate different simulated fault signals for the indicator light. Therefore, by simply controlling the switch, different simulated fault signals for the indicator light can be simulated, facilitating the hydraulic brake controller's detection of various indicator light malfunctions and significantly reducing testing costs.

[0010] In some embodiments, the test circuit includes: a second switching module, a solenoid valve, a second power supply terminal, and a second ground terminal; The second switch module is electrically connected to both the hydraulic brake controller and the fault diagnosis device. The second switch module is used to receive the simulated fault signal input by the fault diagnosis device, and control the second switch module to be in the off state based on the simulated fault signal, or control the fault diagnosis device to be electrically connected to one of the solenoid valve, the second power supply terminal and the second ground terminal based on the simulated fault signal. This solenoid valve is used to control the operating parameters of the hydraulic oil in a hydraulic braking system.

[0011] In some embodiments, the second switch module includes a second switch.

[0012] The control terminal of the second switch is electrically connected to the hydraulic brake controller and the fault diagnosis device, respectively. The first output terminal of the second switch is electrically connected to the second power supply terminal; The second output terminal of the second switch is electrically connected to the solenoid valve. The third output terminal of the second switch is electrically connected to the second ground terminal.

[0013] This invention describes the connection between a hydraulic brake controller and a test circuit. This test circuit is used to test whether the hydraulic brake controller can detect solenoid valve malfunctions in a timely manner. Specifically, a single-pole four-throw switch controls the fault diagnosis device to be electrically connected to one of the solenoid valve, the second power supply terminal, or the second grounding terminal to generate different simulated fault signals for the solenoid valve. Therefore, by simply controlling the switch, different simulated fault signals of the solenoid valve can be simulated, facilitating the hydraulic brake controller's detection of various solenoid valve malfunctions and significantly reducing testing costs.

[0014] In some embodiments, the test circuit includes: a third switch module, a fourth switch module, a fifth switch module, a first wheel speed sensor, a second wheel speed sensor, a third power supply terminal, a third ground terminal, a fourth power supply terminal, and a fourth ground terminal; The third switch module is electrically connected to the hydraulic brake controller and the fault diagnosis device respectively; the fourth switch module is electrically connected to the hydraulic brake controller and the fault diagnosis device respectively; the fifth switch module is electrically connected to the third switch module and the fourth switch module respectively. The third switch module is used to receive the simulated fault signal input by the fault diagnosis device, and control the third switch module to be in the off state based on the simulated fault signal, or control the fault diagnosis device to be electrically connected to one of the first wheel speed sensor, the third power supply terminal and the third ground terminal based on the simulated fault signal. The fourth switch module is used to receive the simulated fault signal input by the fault diagnosis device, and control the fourth switch module to be in the off state based on the simulated fault signal, or control the fault diagnosis device to be electrically connected to one of the second wheel speed sensor, the fourth power supply terminal and the fourth ground terminal based on the simulated fault signal. The fifth switch module is used to receive the simulated fault signal input by the fault diagnosis device, and control the connection state of the third switch module and the fourth switch module based on the simulated fault signal. The connection state includes a conducting state and a disconnecting state. The first wheel speed sensor is used to detect the rotational speed of the first and second wheels in the vehicle; The second wheel speed sensor is used to detect the rotational speed of the third and fourth wheels in the vehicle.

[0015] In some embodiments, the third switch module includes a third switch, the fourth switch module includes a fourth switch, and the fifth switch module includes a fifth switch.

[0016] The control terminal of the third switch is electrically connected to the hydraulic brake controller and the fault diagnosis device, respectively. The first output terminal of the third switch is electrically connected to the third power supply terminal; The second output terminal of the third switch is electrically connected to the first wheel speed sensor; The third output terminal of the third switch is electrically connected to the third ground terminal; The control terminal of the fourth switch is electrically connected to the hydraulic brake controller and the fault diagnosis device, respectively. The first output terminal of the fourth switch is electrically connected to the fourth power supply terminal; The second output terminal of the fourth switch is electrically connected to the second wheel speed sensor; The third output terminal of the fourth switch is electrically connected to the fourth ground terminal; The control terminal of the fifth switch is electrically connected to the fourth switch; The output terminal of the fifth switch is electrically connected to the third switch.

[0017] This invention describes the connection between a hydraulic brake controller and a test circuit. This test circuit is used to test whether the hydraulic brake controller can detect faults in the first and second wheel speed sensors. Specifically, a single-pole four-throw switch controls the fault diagnosis device to be electrically connected to one of the first wheel speed sensor, the third power supply terminal, and the third ground terminal to generate different simulated fault signals for the first wheel speed sensor. Alternatively, the fault diagnosis device can be electrically connected to one of the second wheel speed sensor, the fourth power supply terminal, and the fourth ground terminal. This allows for the simulation of different fault signals from the wheel speed sensors simply by controlling the switch, facilitating the hydraulic brake controller's detection of various solenoid valve faults and significantly reducing testing costs.

[0018] In some embodiments, the test circuit includes: a sixth switch module, a seventh switch module, a motor, a fifth power supply terminal, a fifth ground terminal, a sixth power supply terminal, and a sixth ground terminal; The sixth switch module is electrically connected to the hydraulic brake controller and the fault diagnosis device respectively; the seventh switch module is electrically connected to the hydraulic brake controller and the fault diagnosis device respectively. The sixth switch module is used to receive the simulated fault signal input by the fault diagnosis device, and control the sixth switch module to be in the off state based on the simulated fault signal, or control the fault diagnosis device to be electrically connected to one of the motor, the fifth power supply terminal and the fifth ground terminal based on the simulated fault signal. The seventh switch module is used to receive the simulated fault signal input by the fault diagnosis device, and control the seventh switch module to be in the off state based on the simulated fault signal, or control the fault diagnosis device to be electrically connected to one of the motor, the sixth power supply terminal and the sixth ground terminal based on the simulated fault signal. This motor is used to convert electrical energy into kinetic energy.

[0019] In some embodiments, the sixth switch module includes a sixth switch, and the seventh switch module includes a seventh switch.

[0020] The control terminal of the sixth switch is electrically connected to the hydraulic brake controller and the fault diagnosis device, respectively. The first output terminal of the sixth switch is electrically connected to the fifth power supply terminal; The second output terminal of the sixth switch is electrically connected to the input terminal of the motor; The third output terminal of the sixth switch is electrically connected to the fifth ground terminal; The control terminal of the seventh switch is connected to the hydraulic brake controller and the fault diagnosis device, respectively. The first output terminal of the seventh switch is electrically connected to the sixth power supply terminal; The second output terminal of the seventh switch is electrically connected to the output terminal of the motor. The third output terminal of the seventh switch is electrically connected to the sixth ground terminal.

[0021] This invention describes the connection relationship between a hydraulic brake controller and a corresponding test circuit for a motor. This test circuit is used to test whether the hydraulic brake controller can detect motor faults. Specifically, the fault diagnosis device is electrically connected to one of the motor, the fifth power supply terminal, and the fifth ground terminal via a single-pole four-throw switch; or, the fault diagnosis device is electrically connected to one of the motor, the sixth power supply terminal, and the sixth ground terminal via a single-pole four-throw switch, to generate different simulated fault signals for the motor. Thus, by simply controlling the switch, different fault signals of the motor can be simulated, facilitating the hydraulic brake controller's detection of various faults in the solenoid valve and significantly reducing testing costs.

[0022] Secondly, a testing system is provided, which includes a fault diagnosis device and any of the aforementioned testing devices; The fault diagnosis device is electrically connected to the test circuit. The fault diagnosis device is used to verify whether the diagnostic function of the hydraulic brake controller is correct based on the fault information and the expected fault information. The expected fault information corresponds to the simulated fault signal. The test circuit is used to receive the simulated fault signal input by the fault diagnosis device and generate fault information based on the simulated fault signal, which corresponds to the component fault of the hydraulic brake controller. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a testing device for a hydraulic brake controller provided in an embodiment of this utility model; Figure 2 This is a schematic diagram of a test circuit for detecting the indicator light function of a hydraulic brake controller, provided in an embodiment of this application. Figure 3 This is a schematic diagram of another test circuit provided in this application for detecting the function of the solenoid valve of the hydraulic brake controller; Figure 4 This is a schematic diagram of another test circuit provided in this application for detecting the wheel speed sensor function of the hydraulic brake controller; Figure 5 This is a schematic diagram of another test circuit provided in this application for detecting the motor function of a hydraulic brake controller; Figure 6 This is a schematic diagram of the structure of a testing system provided in an embodiment of this utility model. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] In the description of the embodiments of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0028] In the description of this utility model, it should be understood that the terms "inner", "outer", "upper", "bottom", "front", "rear", etc., indicating the orientation or positional relationship (if any), are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] Figure 1This is a schematic diagram of the structure of a test device for a hydraulic brake controller provided in an embodiment of this utility model.

[0030] For example, such as Figure 1 As shown, the testing apparatus includes a hydraulic brake controller 110 to be tested and at least one test circuit 120. The hydraulic brake controller 110 and each of the test circuits 120 are electrically connected via circuitry.

[0031] To provide a clearer explanation of the technical solutions provided in this embodiment of the present invention, the various modules in the testing device will be introduced below.

[0032] It should be understood that the hydraulic brake controller 110 is used to determine whether the functions of various components in the vehicle are normal by monitoring the electrical signals on the vehicle's sensors. If the hydraulic brake controller 110 cannot accurately monitor the functional safety of each component, the vehicle cannot determine whether the components in the hydraulic brake control system are functioning properly. Therefore, it is necessary to determine whether the hydraulic brake controller 110 can monitor the faults of various components in the hydraulic brake control system in a timely manner.

[0033] In one possible implementation, the hydraulic brake controller to be tested includes at least one test circuit, the hydraulic brake controller being electrically connected to each of the test circuits, and each test circuit being electrically connected to a fault diagnosis device. Each test circuit is configured to receive a simulated fault signal input from the fault diagnosis device and generate fault information based on the simulated fault signal, the simulated fault signal corresponding to a component fault of the hydraulic brake controller. The hydraulic brake controller is configured to monitor the fault information and output the fault information to the fault diagnosis device, the fault diagnosis device being configured to verify the correctness of the diagnostic function of the hydraulic brake controller based on the fault information and expected fault information, the expected fault information corresponding to the simulated fault signal.

[0034] In some embodiments, an electrical connection refers to a physical structure and interface that allows current to be safely and reliably transmitted between two or more devices. An electrical connection between the hydraulic brake controller 110 and at least one test circuit 120 means that the hydraulic brake controller 110 is capable of bidirectional information exchange with the at least one test circuit 120.

[0035] Optionally, in this embodiment of the invention, the communication connection methods include two main categories: wired connection and wireless connection. Wired connection methods include: Controller Area Network (CAN) bus connection and Local Interconnect Network (LIN) bus connection. Each connection method corresponds to a communication method, such as CAN bus communication, LIN bus communication, etc. This embodiment of the invention does not limit the specific method used.

[0036] For example, if the test circuit is used to test whether the hydraulic brake controller can detect indicator light malfunctions, the test circuit receives a simulated fault signal from the fault diagnosis device. This simulated fault signal indicates whether the indicator light is malfunctioning. The test circuit generates first fault information for the indicator light malfunction. The hydraulic brake controller detects this first fault information and outputs it to the fault diagnosis device. The fault diagnosis device verifies whether the hydraulic brake controller can detect the indicator light malfunction in a timely manner based on the first fault information and expected fault information. That is, the expected fault information is the indicator light malfunction information.

[0037] For example, if the test circuit is used to test whether the hydraulic brake controller can detect a solenoid valve malfunction, the test circuit receives a simulated fault signal from the solenoid valve input by the fault diagnosis device. This simulated fault signal indicates whether the solenoid valve has malfunctioned. The test circuit generates a second fault information for the solenoid valve malfunction. The hydraulic brake controller detects this second fault information and outputs it to the fault diagnosis device. The fault diagnosis device verifies whether the hydraulic brake controller can detect the solenoid valve malfunction in a timely manner based on the second fault information and the expected fault information. That is, the expected fault information is information about the solenoid valve malfunction.

[0038] For example, if the test circuit is used to test whether the hydraulic brake controller can detect wheel speed sensor malfunctions, the test circuit receives a simulated fault signal from the wheel speed sensor input by the fault diagnosis device. This simulated fault signal indicates whether the wheel speed sensor has malfunctioned. The test circuit generates third fault information indicating a wheel speed sensor malfunction. The hydraulic brake controller detects this third fault information and outputs it to the fault diagnosis device. The fault diagnosis device verifies whether the hydraulic brake controller can detect wheel speed sensor malfunctions in a timely manner based on this third fault information and expected fault information. That is, the expected fault information is information about wheel speed sensor malfunctions.

[0039] For example, if the test circuit is used to test whether the hydraulic brake controller can detect motor faults, the test circuit receives a simulated fault signal from the fault diagnosis device. This simulated fault signal indicates whether the motor has malfunctioned. The test circuit generates a fourth fault information for the motor fault. The hydraulic brake controller detects this fourth fault information and outputs it to the fault diagnosis device. The fault diagnosis device verifies whether the hydraulic brake controller can detect the motor in a timely manner based on this fourth fault information and the expected fault information. That is, the expected fault information is information about a motor fault.

[0040] In this invention, a test circuit receives simulated fault signals input by the fault diagnosis device and generates fault information based on these signals. The hydraulic brake controller monitors this fault information and outputs it to the fault diagnosis device. In other words, by using different test circuits to check whether different detection functions of the hydraulic brake controller are functioning correctly, the wiring on the hydraulic brake controller is reduced, manpower is minimized, and detection costs are lowered during the process of detecting faults in vehicle components. This, in turn, extends the service life of the hydraulic brake controller.

[0041] like Figure 2 As shown, Figure 2 This is a schematic diagram of the structure of a test circuit for detecting the indicator light function of a hydraulic brake controller, provided in an embodiment of this application.

[0042] It should be understood that in a hydraulic brake control system, this indicator light is used to indicate whether the hydraulic brake system is malfunctioning. If the hydraulic brake control is functioning correctly, the indicator light will illuminate. Therefore, the hydraulic brake controller needs to detect whether this indicator light is faulty in order to inform the user whether the hydraulic brake control system is operating normally.

[0043] In one possible implementation, the test circuit includes: a first switch module 21, an indicator light, a first power supply terminal VCC, and a first ground terminal GND.

[0044] The first switch module 21 is electrically connected to the hydraulic brake controller and the fault diagnosis device, respectively. The first switch module 21 is used to receive the simulated fault signal input by the fault diagnosis device and control the first switch module 21 to be in the off state based on the simulated fault signal, or control the fault diagnosis device to be electrically connected to one of the indicator light, the first power supply terminal VCC and the first ground terminal GND based on the simulated fault signal. The indicator light is used to indicate whether the hydraulic brake system is faulty.

[0045] In some embodiments, the first switching module includes a first switch K1 and a first resistor R1.

[0046] Among them, the first switch K1 can be a single-pole four-throw switch.

[0047] In some embodiments, the control terminal of the first switch K1 is electrically connected to the hydraulic brake controller and the fault diagnosis device, respectively.

[0048] In some embodiments, the first output terminal of the first switch K1 is electrically connected to the first power supply terminal VCC. Connecting the first output terminal of the first switch K1 to the first power supply terminal VCC indicates a short power failure of the indicator light.

[0049] In some embodiments, the second output terminal of the first switch K1 is electrically connected to the first terminal of the first resistor R1, and the second terminal of the first resistor R1 is electrically connected to the indicator light. Connecting the second output terminal of the first switch K1 to the first resistor R1 indicates that the indicator light is functioning correctly.

[0050] It should be understood that in practical applications, if the current flowing through the indicator light is too large, it will easily cause the indicator light to burn out. Therefore, in order to avoid damage to the indicator light, a resistor is connected in series in the indicator light test circuit, that is, the first resistor R1 is connected in series.

[0051] In some embodiments, the third output terminal of the first switch K1 is electrically connected to the first ground terminal. Connecting the third output terminal of the first switch K1 to the first ground terminal GND indicates a short-ground fault in the indicator light.

[0052] In some embodiments, the first switch K1 being open indicates an open circuit fault in the indicator light.

[0053] This invention describes the connection between a hydraulic brake controller and a test circuit. The test circuit is used to test whether the hydraulic brake controller can detect indicator light malfunctions in a timely manner. Specifically, a single-pole four-throw switch controls the fault diagnosis device to be electrically connected to one of the indicator light, the first power supply terminal, and the first ground terminal to generate different simulated fault signals for the indicator light. Therefore, by simply controlling the switch, different simulated fault signals for the indicator light can be simulated, facilitating the hydraulic brake controller's detection of various indicator light malfunctions and significantly reducing testing costs.

[0054] like Figure 3 As shown, Figure 3 This is a schematic diagram of another test circuit provided in this application for detecting the function of the solenoid valve of the hydraulic brake controller.

[0055] It should be understood that in a hydraulic brake control system, this solenoid valve is used to control the operating parameters of the hydraulic oil in the hydraulic brake system. If the solenoid valve malfunctions, the operating parameters of the hydraulic oil may not be sufficient to provide adequate braking force, resulting in insufficient or excessive braking force on the wheels, which could lead to loss of vehicle control. Therefore, it is necessary to check whether the hydraulic brake controller can detect solenoid valve malfunctions in a timely manner to ensure driving safety.

[0056] In some embodiments, the test circuit includes: a second switching module 31, a solenoid valve, a second power supply terminal VCC, and a second ground terminal GND.

[0057] The second switch module 31 is electrically connected to the hydraulic brake controller and the fault diagnosis device respectively; the second switch module K2 is used to receive the simulated fault signal input by the fault diagnosis device and control the second switch module 31 to be in the off state based on the simulated fault signal, or control the fault diagnosis device to be electrically connected to one of the solenoid valve, the second power supply terminal VCC and the second ground terminal GND based on the simulated fault signal; the solenoid valve is used to control the working parameters of the hydraulic oil in the hydraulic braking system.

[0058] In some embodiments, the second switch module 31 includes a second switch K2.

[0059] The second switch K2 can be a single-pole four-throw switch.

[0060] In some embodiments, the control terminal of the second switch K2 is electrically connected to the hydraulic brake controller and the fault diagnosis device, respectively.

[0061] In some embodiments, the first output terminal of the second switch K2 is electrically connected to the second power supply terminal VCC. Connecting the first output terminal of the second switch K2 to the second power supply terminal VCC indicates a short power supply fault in the solenoid valve.

[0062] In some embodiments, the second output terminal of the second switch K2 is electrically connected to the solenoid valve. Connecting the second output terminal of the second switch K2 to the solenoid valve indicates that the solenoid valve is functioning correctly. In some embodiments, the third output terminal of the second switch K2 is electrically connected to the second ground terminal. Connecting the third output terminal of the second switch K2 to the third output terminal indicates a short-to-ground fault in the solenoid valve.

[0063] In some embodiments, the second switch being open indicates an open-circuit fault in the solenoid valve.

[0064] This invention describes the connection between a hydraulic brake controller and a test circuit. This test circuit is used to test whether the hydraulic brake controller can detect solenoid valve malfunctions in a timely manner. Specifically, a single-pole four-throw switch controls the fault diagnosis device to be electrically connected to one of the solenoid valve, the second power supply terminal, or the second grounding terminal to generate different simulated fault signals for the solenoid valve. Therefore, by simply controlling the switch, different simulated fault signals of the solenoid valve can be simulated, facilitating the hydraulic brake controller's detection of various solenoid valve malfunctions and significantly reducing testing costs.

[0065] like Figure 4 As shown, Figure 4 This is a schematic diagram of the structure of a test circuit for detecting the wheel speed sensor function of a hydraulic brake controller, provided in an embodiment of this application.

[0066] It should be understood that in a hydraulic brake control system, the first wheel speed sensor is used to detect the rotational speeds of the first and second wheels of the vehicle; the second wheel speed sensor is used to detect the rotational speeds of the third and fourth wheels of the vehicle. If the wheel speed sensors malfunction, it can easily lead to the inability to detect the wheel speeds of the vehicle. In practical applications, if the wheel speeds of the vehicle cannot be obtained, it indicates that the vehicle has lost control. Therefore, it is necessary to verify whether the hydraulic brake controller can detect wheel speed sensor malfunctions in a timely manner to ensure driving safety.

[0067] In one possible implementation, the test circuit includes: a third switch module 41, a fourth switch module 42, a fifth switch module 43, a first wheel speed sensor, a second wheel speed sensor, a third power supply terminal VCC, a third ground terminal GND, a fourth power supply terminal VCC, and a fourth ground terminal GND. The third switch module 41 is electrically connected to the hydraulic brake controller and the fault diagnosis device, respectively; the fourth switch module 42 is electrically connected to the hydraulic brake controller and the fault diagnosis device, respectively; and the fifth switch module 43 is electrically connected to the third switch module 41 and the fourth switch module 42, respectively.

[0068] The third switch module 41 is used to receive the simulated fault signal input by the fault diagnosis device, and control the third switch module 41 to be in the off state based on the simulated fault signal, or control the fault diagnosis device to be electrically connected to one of the first wheel speed sensor, the third power supply terminal VCC and the third ground terminal GND based on the simulated fault signal.

[0069] The fourth switch module 42 is used to receive the simulated fault signal input by the fault diagnosis device, and control the fourth switch module 42 to be in the off state based on the simulated fault signal, or control the fault diagnosis device to be electrically connected to one of the second wheel speed sensor, the fourth power supply terminal VCC and the fourth ground terminal GND based on the simulated fault signal.

[0070] The fifth switch module 43 is used to receive the simulated fault signal input by the fault diagnosis device, and control the connection state of the third switch module 41 and the fourth switch module 42 based on the simulated fault signal. The connection state includes a conducting state and a disconnecting state.

[0071] The first wheel speed sensor is used to detect the rotational speed of the first and second wheels in the vehicle; the second wheel speed sensor is used to detect the rotational speed of the third and fourth wheels in the vehicle.

[0072] In some embodiments, the third switch module 41 includes a third switch K3, the fourth switch module 42 includes a fourth switch K4, and the fifth switch module 43 includes a fifth switch K5.

[0073] Among them, the third switch K3 can be a single-pole four-throw switch; the fourth switch K4 can be a single-pole four-throw switch; and the fifth switch K5 can be a single-pole single-throw switch.

[0074] In some embodiments, the control terminal of the third switch K3 is electrically connected to the hydraulic brake controller and the fault diagnosis device, respectively.

[0075] In some embodiments, the first output terminal of the third switch K3 is electrically connected to the third power supply terminal VCC. Connecting the first output terminal of the third switch K3 to the third power supply terminal VCC indicates a short power supply fault in the first wheel speed sensor.

[0076] In some embodiments, the second output terminal of the third switch K3 is electrically connected to the first wheel speed sensor. Connecting the second output terminal of the third switch K3 to the first wheel speed sensor indicates that the first wheel speed sensor is fault-free.

[0077] In some embodiments, the third output terminal of the third switch K3 is electrically connected to the third ground terminal. Connecting the third output terminal of the third switch K3 to the third ground terminal GND indicates a short-ground fault in the first wheel speed sensor.

[0078] In some embodiments, the third switch K3 being in the open state indicates an open circuit fault in the first wheel speed sensor.

[0079] In some embodiments, the control terminal of the fourth switch K4 is electrically connected to the hydraulic brake controller and the fault diagnosis device, respectively.

[0080] In some embodiments, the first output terminal of the fourth switch K4 is electrically connected to the fourth power supply terminal VCC. Connecting the first output terminal of the fourth switch to the fourth power supply terminal VCC indicates a short power supply fault in the second wheel speed sensor.

[0081] In some embodiments, the second output terminal of the fourth switch K4 is electrically connected to the second wheel speed sensor; connecting the second output terminal of the fourth switch K4 to the second wheel speed sensor indicates that the second wheel speed sensor is fault-free.

[0082] In some embodiments, the third output terminal of the fourth switch K4 is electrically connected to the fourth ground terminal GND. Connecting the third output terminal of the fourth switch K4 to the fourth ground terminal GND indicates a short-ground fault in the second wheel speed sensor.

[0083] In some embodiments, the fourth switch K4 being in the off state indicates an open circuit fault in the second wheel speed sensor.

[0084] In some embodiments, the first terminal of the fifth switch K5 is electrically connected to the control terminal of the fourth switch K4; the second terminal of the fifth switch K5 is electrically connected to the control terminal of the third switch K3. The first terminal of the fifth switch K5 being connected to the control terminal of the third switch K3 indicates that the first wheel speed sensor and the second wheel speed sensor are short-circuited.

[0085] This invention describes the connection between a hydraulic brake controller and a test circuit. This test circuit is used to test whether the hydraulic brake controller can detect faults in the first and second wheel speed sensors. Specifically, a single-pole four-throw switch controls the fault diagnosis device to be electrically connected to one of the first wheel speed sensor, the third power supply terminal, and the third ground terminal to generate different simulated fault signals for the first wheel speed sensor. Alternatively, the fault diagnosis device can be electrically connected to one of the second wheel speed sensor, the fourth power supply terminal, and the fourth ground terminal. This allows for the simulation of different fault signals from the wheel speed sensors simply by controlling the switch, facilitating the hydraulic brake controller's detection of various solenoid valve faults and significantly reducing testing costs.

[0086] like Figure 5 As shown, Figure 5 This is a schematic diagram of another test circuit provided in this application for detecting the motor function of a hydraulic brake controller.

[0087] It should be understood that in a hydraulic brake control system, the motor is used to convert electrical energy into kinetic energy. If the motor malfunctions, the vehicle cannot be used normally. Therefore, the hydraulic brake controller needs to detect whether the motor is malfunctioning. If the detection function of the hydraulic brake controller is damaged, the motor malfunction cannot be detected in time. Therefore, it is necessary to check whether the detection function of the hydraulic brake controller is working properly.

[0088] In some embodiments, the test circuit includes: a sixth switch module 51, a seventh switch module 52, a motor, a fifth power supply terminal VCC, a fifth ground terminal GND, a sixth power supply terminal VCC, and a sixth ground terminal GND.

[0089] The sixth switch module 51 is electrically connected to the hydraulic brake controller and the fault diagnosis device, respectively; the seventh switch module 52 is electrically connected to the hydraulic brake controller and the fault diagnosis device, respectively.

[0090] The sixth switch module 51 is used to receive the simulated fault signal input by the fault diagnosis device and control the sixth switch module to be in the off state based on the simulated fault signal, or control the fault diagnosis device to be electrically connected to one of the motor, the fifth power supply terminal VCC and the fifth ground terminal GND based on the simulated fault signal.

[0091] The seventh switch module 52 is used to receive the simulated fault signal input by the fault diagnosis device, and control the seventh switch module 52 to be in the off state based on the simulated fault signal, or control the fault diagnosis device to be electrically connected to one of the motor, the sixth power supply terminal VCC and the sixth ground terminal GND based on the simulated fault signal; the motor is used to convert electrical energy into kinetic energy.

[0092] In some embodiments, the sixth switch module includes a sixth switch K6, and the seventh switch module includes a seventh switch K7.

[0093] Among them, the sixth switch K6 can be a single-pole four-throw switch; the seventh switch K7 can be a single-pole four-throw switch.

[0094] In some embodiments, the control terminal of the sixth switch K6 is electrically connected to the hydraulic brake controller and the fault diagnosis device, respectively.

[0095] In some embodiments, the first output terminal of the sixth switch K6 is electrically connected to the fifth power supply terminal VCC. Connecting the first output terminal of the sixth switch K6 to the fifth power supply terminal VCC indicates a short power supply fault at the motor input terminal.

[0096] In some embodiments, the second output terminal of the sixth switch K6 is electrically connected to the input terminal of the motor. Connecting the second output terminal of the sixth switch K6 to the motor input terminal indicates that there is no fault at the motor input terminal.

[0097] In some embodiments, the third output terminal of the sixth switch K6 is electrically connected to the fifth ground terminal GND. Connecting the third output terminal of the sixth switch K6 to the fifth ground terminal GND indicates a short-to-ground fault at the motor input terminal.

[0098] In some embodiments, the sixth switch K6 being in the open state indicates an open circuit fault at the motor input terminal.

[0099] In some embodiments, the control terminal of the seventh switch K7 is connected to both the hydraulic brake controller and the fault diagnosis device.

[0100] In some embodiments, the first output terminal of the seventh switch K7 is electrically connected to the sixth power supply terminal VCC. Connecting the first output terminal of the seventh switch K7 to the sixth power supply terminal VCC indicates a short power supply fault at the motor output terminal.

[0101] In some embodiments, the second output terminal of the seventh switch K7 is electrically connected to the output terminal of the motor. Connecting the second output terminal of the sixth switch to the motor output terminal indicates that the motor output terminal is fault-free.

[0102] In some embodiments, the third output terminal of the seventh switch K7 is electrically connected to the sixth ground terminal GND. Connecting the third output terminal of the seventh switch K7 to the motor output terminal indicates a short-to-ground fault at the motor output terminal.

[0103] In some embodiments, the seventh switch being in the off state indicates an open circuit fault at the motor output terminal.

[0104] This invention describes the connection relationship between a hydraulic brake controller and a corresponding test circuit for a motor. This test circuit is used to test whether the hydraulic brake controller can detect motor faults. Specifically, the fault diagnosis device is electrically connected to one of the motor, the fifth power supply terminal, and the fifth ground terminal via a single-pole four-throw switch; or, the fault diagnosis device is electrically connected to one of the motor, the sixth power supply terminal, and the sixth ground terminal via a single-pole four-throw switch, to generate different simulated fault signals for the motor. Thus, by simply controlling the switch, different fault signals of the motor can be simulated, facilitating the hydraulic brake controller's detection of various faults in the solenoid valve and significantly reducing testing costs.

[0105] This utility model embodiment also provides a testing system, which includes a host computer and a testing device. See also Figure 6 This illustrates a test system 600.

[0106] The test system 600 includes a fault diagnosis device 610 and a test device 620.

[0107] The fault diagnosis device 610 is electrically connected to the test circuit 620. The fault diagnosis device 610 is used to verify whether the diagnostic function of the hydraulic brake controller is correct based on the fault information and the expected fault information. The expected fault information corresponds to the simulated fault signal.

[0108] The testing device 620 is used to receive the simulated fault signal input by the fault diagnosis device 610 and generate fault information based on the simulated fault signal, which is paired with the component fault of the hydraulic brake controller.

[0109] In some embodiments, the fault diagnosis device 610 can be installed in the host computer, that is, the fault diagnosis device 610 and the host computer are integrated into one device.

[0110] In some embodiments, the diagnostic functions of the hydraulic brake controller are verified via a host computer. This host computer is a human-machine interface that monitors and sends simulated fault signals and displays the status of the hydraulic brake controller. In some embodiments, the host computer can be a main unit on a production line in a factory, or a smart screen.

[0111] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A testing device for a hydraulic brake controller, characterized in that, The testing apparatus includes: The hydraulic brake controller to be tested and at least one test circuit, wherein the hydraulic brake controller is electrically connected to each of the test circuits and each of the test circuits is also electrically connected to a fault diagnosis device; Each of the test circuits is configured to receive a simulated fault signal input from the fault diagnosis device and generate fault information based on the simulated fault signal, wherein the simulated fault signal corresponds to a component fault of the hydraulic brake controller. The hydraulic brake controller is used to monitor the fault information and output the fault information to the fault diagnosis device. The fault diagnosis device is used to verify whether the diagnostic function of the hydraulic brake controller is correct based on the fault information and the expected fault information. The expected fault information corresponds to the simulated fault signal.

2. The testing apparatus according to claim 1, characterized in that, The test circuit includes: a first switch module, an indicator light, a first power supply terminal, and a first ground terminal; The first switch module is electrically connected to both the hydraulic brake controller and the fault diagnosis device. The first switch module is used to receive the simulated fault signal input by the fault diagnosis device, and control the first switch module to be in the off state based on the simulated fault signal, or control the fault diagnosis device to be electrically connected to one of the indicator light, the first power supply terminal and the first ground terminal based on the simulated fault signal. The indicator light is used to indicate whether the hydraulic braking system is malfunctioning.

3. The testing apparatus according to claim 2, characterized in that, The first switching module includes a first switch and a first resistor; The control terminal of the first switch is electrically connected to the hydraulic brake controller and the fault diagnosis device, respectively. The first output terminal of the first switch is electrically connected to the first power supply terminal; The second output terminal of the first switch is electrically connected to the first terminal of the first resistor; The second end of the first resistor is electrically connected to the indicator light; The third output terminal of the first switch is electrically connected to the first ground terminal.

4. The testing apparatus according to claim 1, characterized in that, The test circuit includes: a second switch module, a solenoid valve, a second power supply terminal, and a second ground terminal; The second switch module is electrically connected to both the hydraulic brake controller and the fault diagnosis device. The second switch module is used to receive the simulated fault signal input by the fault diagnosis device, and control the second switch module to be in the off state based on the simulated fault signal, or control the fault diagnosis device to be electrically connected to one of the solenoid valve, the second power supply terminal and the second ground terminal based on the simulated fault signal. The solenoid valve is used to control the operating parameters of the hydraulic oil in the hydraulic braking system.

5. The testing apparatus according to claim 4, characterized in that, The second switch module includes a second switch; The control terminal of the second switch is electrically connected to both the hydraulic brake controller and the fault diagnosis device. The first output terminal of the second switch is electrically connected to the second power supply terminal; The second output terminal of the second switch is electrically connected to the solenoid valve; The third output terminal of the second switch is electrically connected to the second ground terminal.

6. The testing apparatus according to claim 1, characterized in that, The test circuit includes: a third switch module, a fourth switch module, a fifth switch module, a first wheel speed sensor, a second wheel speed sensor, a third power supply terminal, a third grounding terminal, a fourth power supply terminal, and a fourth grounding terminal; The third switch module is electrically connected to the hydraulic brake controller and the fault diagnosis device, respectively; the fourth switch module is electrically connected to the hydraulic brake controller and the fault diagnosis device, respectively; the fifth switch module is electrically connected to the third switch module and the fourth switch module, respectively. The third switch module is used to receive the simulated fault signal input by the fault diagnosis device, and control the third switch module to be in the off state based on the simulated fault signal, or control the fault diagnosis device to be electrically connected to one of the first wheel speed sensor, the third power supply terminal and the third ground terminal based on the simulated fault signal. The fourth switch module is used to receive the simulated fault signal input by the fault diagnosis device, and control the fourth switch module to be in the off state based on the simulated fault signal, or control the fault diagnosis device to be electrically connected to one of the second wheel speed sensor, the fourth power supply terminal and the fourth ground terminal based on the simulated fault signal. The fifth switch module is used to receive the simulated fault signal input by the fault diagnosis device, and control the connection state of the third switch module and the fourth switch module based on the simulated fault signal. The connection state includes a conducting state and a disconnecting state. The first wheel speed sensor is used to detect the rotational speed of the first wheel and the second wheel in the vehicle; The second wheel speed sensor is used to detect the rotational speed of the third and fourth wheels in the vehicle.

7. The testing apparatus according to claim 6, characterized in that, The third switch module includes a third switch, the fourth switch module includes a fourth switch, and the fifth switch module includes a fifth switch; The control terminal of the third switch is electrically connected to the hydraulic brake controller and the fault diagnosis device, respectively. The first output terminal of the third switch is electrically connected to the third power supply terminal; The second output terminal of the third switch is electrically connected to the first wheel speed sensor; The third output terminal of the third switch is electrically connected to the third ground terminal; The control terminal of the fourth switch is electrically connected to the hydraulic brake controller and the fault diagnosis device, respectively. The first output terminal of the fourth switch is electrically connected to the fourth power supply terminal; The second output terminal of the fourth switch is electrically connected to the second wheel speed sensor; The third output terminal of the fourth switch is electrically connected to the fourth ground terminal; The first terminal of the fifth switch is electrically connected to the control terminal of the fourth switch; The second terminal of the fifth switch is electrically connected to the control terminal of the third switch.

8. The testing apparatus according to claim 1, characterized in that, The test circuit includes: a sixth switch module, a seventh switch module, a motor, a fifth power supply terminal, a fifth grounding terminal, a sixth power supply terminal, and a sixth grounding terminal; The sixth switch module is electrically connected to both the hydraulic brake controller and the fault diagnosis device; the seventh switch module is electrically connected to both the hydraulic brake controller and the fault diagnosis device. The sixth switch module is used to receive the simulated fault signal input by the fault diagnosis device, and control the sixth switch module to be in the off state based on the simulated fault signal, or control the fault diagnosis device to be electrically connected to one of the motor, the fifth power supply terminal and the fifth grounding terminal based on the simulated fault signal. The seventh switch module is used to receive the simulated fault signal input by the fault diagnosis device, and control the seventh switch module to be in the off state based on the simulated fault signal, or control the fault diagnosis device to be electrically connected to one of the motor, the sixth power supply terminal and the sixth grounding terminal based on the simulated fault signal. The motor is used to convert electrical energy into kinetic energy.

9. The testing apparatus according to claim 8, characterized in that, The sixth switch module includes a sixth switch, and the seventh switch module includes a seventh switch; The control terminal of the sixth switch is electrically connected to the hydraulic brake controller and the fault diagnosis device, respectively. The first output terminal of the sixth switch is electrically connected to the fifth power supply terminal; The second output terminal of the sixth switch is electrically connected to the input terminal of the motor; The third output terminal of the sixth switch is electrically connected to the fifth ground terminal; The control terminal of the seventh switch is electrically connected to the hydraulic brake controller and the fault diagnosis device, respectively. The first output terminal of the seventh switch is electrically connected to the sixth power supply terminal; The second output terminal of the seventh switch is electrically connected to the output terminal of the motor. The third output terminal of the seventh switch is electrically connected to the sixth grounding terminal.

10. A testing system, characterized in that, The system includes a fault diagnosis device and a testing device as described in any one of claims 1 to 9; The fault diagnosis device is electrically connected to the test circuit. The fault diagnosis device is used to input a simulated fault signal to the test circuit and to verify whether the diagnostic function of the hydraulic brake controller is correct based on the fault information and expected fault information returned by the test circuit. The expected fault information corresponds to the simulated fault signal.

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