Performance detection device for electrically controlled brake master valve

Abstract

The invention relates to the technical field of vehicle part detection, in particular to a performance detection device for an electric control brake master valve. The invention provides an electrically-controlled brake master valve performance detection device which comprises a control system, a clamp table and an operation table. The clamp table is connected with the operation table through mechanical connection, installed on the operation table and used for bearing an electrically-controlled brake master valve. The control system is connected with the operation table through mechanical connection and installed on the operation table. The control system is electrically connected with the clamp table and is used for controlling the test conditions of the electrically controlled brake master valve and detecting the input and output characteristics of the electrically controlled brake master valve; the operation table is used for providing an overall frame of the device. The device can be used for detecting the input and output characteristics of the electronic control brake master valve, the sense consistency problem of a brake pedal of a bidirectional driving electronic guide rubber wheel electric vehicle can be improved, whether products have quality problems or not is checked, and automatic detection of the characteristics of the electronic control brake master valve is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle component detection, and more specifically to a performance detection device for an electronically controlled brake master valve. Background Art

[0002] The electronically guided rubber-tyred tram is a new type of virtual rail transit vehicle that can travel in both directions and has multiple sections. This type of two-way vehicle is usually equipped with two driver's cabs, and the configuration of the front and rear driver's cabs is basically the same. As a new type of transportation, the single route of the electronically guided rubber-tyred tram is generally around 20 kilometers, and the one-way travel time is about 40 minutes.

[0003] Due to the special characteristics of the two-way travel of the electronically guided rubber-tyred tram, the driver needs to change the end at both the departure station and the terminal. At this time, the consistency of the driving operation end is crucial to the driver's experience. For example, the ambient temperature of the cab, the hand force on the steering wheel, the feel of the accelerator pedal, the feel of the brake pedal, etc. all need to be kept consistent.

[0004] The braking system is a key subsystem of the vehicle, providing the driver with an operating interface - the electronically controlled brake master valve (with brake pedal). When the driver needs to decelerate according to the road conditions, the braking force is controlled by the depth of the brake pedal.

[0005] Therefore, when conducting factory inspection (supplier), incoming material inspection (OEM) and operational abnormality inspection (operating company) of the electric control brake master valve, an automated device that can detect the characteristics of the electric control brake master valve is urgently needed.

[0006] At present, there are usually many master valve detection devices in the prior art, but these devices basically test the output characteristic relationship between the master valve push rod stroke and the master valve analog signal and the gas signal by removing the brake pedal. However, even if the characteristic relationship between the push rod stroke and the master valve output is well controlled, many pedal feel consistency phenomena still occur at the operation site. Summary of the invention

[0007] The purpose of the present invention is to provide a device for detecting the performance of an electronically controlled brake master valve, so as to solve the problem in the prior art that the consistency of the electronically controlled brake master valve is difficult to detect accurately.

[0008] In order to achieve the above-mentioned object, the present invention provides an electronically controlled brake master valve performance detection device, including a control system, a fixture table and an operating table:

[0009] The fixture table is connected to the operating table through a mechanical connection, installed on the operating table, and is used to carry the electric control brake main valve;

[0010] The control system is connected to the operating table through a mechanical connection and installed on the operating table;

[0011] The control system is connected to the fixture table through an electrical connection, and is used to control the test conditions of the electric control brake master valve and detect the input and output characteristics of the electric control brake master valve;

[0012] The operating table is used to provide the overall framework of the device.

[0013] In one embodiment, the control system includes an industrial computer, a display, a servo control system, a pipeline control system and an electrical control system:

[0014] The industrial computer is used to carry the control software and operate the entire detection device;

[0015] The display provides a human-machine interface between the operator and the control system;

[0016] The servo control system controls the servo motor to drive the fixture device of the fixture table to rotate;

[0017] The pipeline control system controls the on-off of the main valve intake and exhaust pipelines;

[0018] The electrical control system controls the operation of the electrical equipment of the detection device.

[0019] In one embodiment, the fixture table includes a pipeline device, a force measuring device, an angle measuring device, an analog signal measuring device, an air pressure signal measuring device and a switch signal measuring device:

[0020] The pipeline device provides the pneumatic valve group and pipeline accessories involved in the main valve testing process;

[0021] The force measuring device is used to measure the brake pedal force;

[0022] The angle measuring device is used to measure the angle when the brake pedal is in action;

[0023] The analog signal measuring device is used to measure the output value of the analog signal of the main valve;

[0024] The air pressure signal measuring device is used to measure the air pressure value in the pipeline system;

[0025] The switch quantity signal measuring device is used to measure the switch quantity signal output value of the main valve.

[0026] In one embodiment, the pipeline device includes three pneumatic source components, a booster valve, a proportional control valve, an intake and exhaust tightening cylinder, a tightening cylinder for fixing the main valve, an air cylinder, a solenoid valve, and pipeline accessories:

[0027] The pneumatic three-source component is an air source processing component that purifies and filters the air source and makes the air source reach the pressure required by the system;

[0028] The booster valve increases the input pressure to a certain pressure and then outputs it;

[0029] The proportional regulating valve adjusts the air pressure proportionally and then outputs it;

[0030] The intake and exhaust pressing cylinder extends a push rod to press against the intake inlet and exhaust outlet of the electric control brake master valve;

[0031] The pressing cylinder for fixing the main valve is used to press on the main valve base after the main valve is installed, so as to press and stabilize the main valve;

[0032] The air cylinder is used to store wind pressure;

[0033] The solenoid valve is used to control the air pressure flow direction of the pipeline.

[0034] In one embodiment, the force measuring device includes a servo motor, a gearbox, a transmission shaft, a bearing, a fixing frame, a longitudinal telescopic arm, a transverse telescopic arm, a test probe, and a force sensor:

[0035] The servo motor receives the control signal of the industrial computer and outputs it, and rotates to drive the telescopic arm to rotate;

[0036] The gearbox decelerates and increases torque on the output of the servo motor;

[0037] The transmission shaft transmits motion and force;

[0038] The bearing is used to position and fix the rotating parts;

[0039] The fixing frame is used to provide a mounting bracket;

[0040] The longitudinal telescopic arm is used for longitudinal telescopic adjustment;

[0041] The transverse telescopic arm is used for transverse telescopic adjustment;

[0042] The test probe is used to contact the contact piece of the pedal on the electric control brake master valve;

[0043] The force sensor is used to collect the magnitude of the force applied to the probe.

[0044] In one embodiment, the angle measuring device includes a servo motor, a gearbox, a transmission shaft, a bearing, a fixing frame, a longitudinal telescopic arm, a transverse telescopic arm, a test probe, and an angle encoder:

[0045] The servo motor receives the control signal of the industrial computer and outputs it, and rotates to drive the telescopic arm to rotate;

[0046] The gearbox decelerates and increases torque of the output of the servo motor;

[0047] The transmission shaft transmits motion and force;

[0048] The bearing is used to position and fix the rotating parts;

[0049] The fixing frame is used to provide a mounting bracket;

[0050] The longitudinal telescopic arm is used for longitudinal telescopic adjustment;

[0051] The transverse telescopic arm is used for transverse telescopic adjustment;

[0052] The test probe is used to contact the contact piece of the pedal on the electric control brake master valve;

[0053] The angle encoder is used to detect the rotation angle of the telescopic arm.

[0054] In one embodiment, the analog signal measuring device includes an industrial computer, an AIO board, and an electrical wiring harness;

[0055] The air pressure signal measuring device includes an industrial computer, an AIO board, an electrical wiring harness, and an air pressure sensor;

[0056] The switch signal measuring device includes an industrial computer, a DIO board, and an electrical wiring harness;

[0057] The industrial computer is a computer system used to process data and achieve target control;

[0058] The AIO board is a collection board for collecting analog data;

[0059] The DIO board is a collection board used to collect switch quantity data;

[0060] The electrical harness is all the cables that need to be connected;

[0061] The air pressure sensor is a sensor used to collect air pressure.

[0062] In one embodiment, the operating platform comprises a profile truss and a sheet metal panel:

[0063] The profile truss is used to build the framework of the test device and fix the control system and the fixture table;

[0064] The sheet metal panel is used to connect the trusses.

[0065] The present invention provides an electronically controlled brake master valve performance detection device, which can be used to detect the input and output characteristics of the master valve, including the relationship between the angle signal and the master valve output signal, to improve the consistency of the brake pedal feel of a bidirectional electronically guided rubber-wheeled electric vehicle, and to check whether the product has quality problems. The device can realize the automatic detection of the electronically controlled brake master valve characteristics, meeting the need to complete all tests with one click. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments, in which the same reference numerals always represent the same features, wherein:

[0067] Figure 1 A schematic structural diagram of an electronically controlled brake master valve performance detection device according to an embodiment of the present invention is disclosed;

[0068] Figure 2 An internal schematic diagram of an electronically controlled brake master valve performance detection device according to an embodiment of the present invention is disclosed;

[0069] Figure 3 A side schematic diagram of a fixture table according to an embodiment of the present invention is disclosed;

[0070] Figure 4 A top view of a fixture table according to an embodiment of the present invention is disclosed;

[0071] Figure 5 A partial schematic diagram of a fixture table according to an embodiment of the present invention is disclosed.

[0072] The meanings of the reference numerals in the figures are as follows:

[0073] 1. Control system;

[0074] 11 Industrial computer;

[0075] 12 displays;

[0076] 2 fixture table;

[0077] 21 Pipeline device;

[0078] 211 Intake and exhaust cylinders are tightened;

[0079] 212 air cylinder;

[0080] 22 force measuring device;

[0081] 221 servo motor;

[0082] 222 gearbox;

[0083] 223 transmission shaft;

[0084] 224 bearings;

[0085] 225 fixed frame;

[0086] 226 longitudinal telescopic arm;

[0087] 227 lateral telescopic arm;

[0088] 228 test probe;

[0089] 229 force sensor;

[0090] 23 angle measuring device;

[0091] 3. Operation table;

[0092] 31 profile trusses;

[0093] 32 Sheet Metal Panels. DETAILED DESCRIPTION

[0094] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the invention and are not used to limit the invention.

[0095] The consistency of the electronically controlled brake master valve is crucial to the driver's brake pedal feel. When the driver is driving the same train at both ends, the feedback on the use of the brake pedal is inconsistent. This problem is mainly caused by the poor consistency of certain characteristics of the electronically controlled brake master valve when it leaves the factory. These characteristics include the zero position state, the relationship between the pedal angle and the pedal force, the relationship between the pedal angle and the output signal, etc.

[0096] Since the input-output characteristic of the main valve is the relationship between the pedal angle and the signal output, and the original relationship between the push rod stroke and the signal output is only an intermediate quantity of the main valve characteristic, the lever relationship between the pedal angle and the push rod stroke is missing.

[0097] Therefore, the existing main valve detection device needs to be optimized and designed to better meet the detection requirements of the main valve input and output characteristics.

[0098] Figure 1 The present invention discloses a schematic diagram of the structure of an electronically controlled brake master valve performance detection device according to an embodiment of the present invention. Figure 2 The internal schematic diagram of the electronically controlled brake master valve performance detection device according to an embodiment of the present invention is disclosed. Figure 1 and Figure 2 As shown, the electronically controlled brake master valve performance detection device proposed by the present invention comprises a control system 1, a fixture table 2 and an operating table 3:

[0099] The fixture table 2 is connected to the operating table 3 through a mechanical connection, and is installed on the operating table 3 for placing the electric control brake main valve;

[0100] The control system 1 is connected to the operating table 3 through a mechanical connection and is installed on the operating table 3;

[0101] The control system 1 is connected to the fixture table 2 through an electrical connection, and is used to control the test conditions of the electric control brake master valve and detect the input and output characteristics of the electric control brake master valve;

[0102] The operating table 3 is used to provide the overall framework of the device.

[0103] In this embodiment, the control system 1 is composed of an industrial computer 11, a display 12, a servo control system, a pipeline control system, and an electrical control system:

[0104] The industrial computer 11 carries the control software and is used to operate the entire detection device;

[0105] The display 12 is a human-machine interface between the system and the operator;

[0106] The servo control system controls the servo motor to drive the fixture device of the fixture table to rotate;

[0107] The pipeline control system controls the on-off of the main valve intake and exhaust pipelines;

[0108] The electrical control system controls the operation of the electrical equipment of the detection device.

[0109] In this embodiment, the servo control system, the pipeline control system, and the electrical control system are all integrated in the industrial computer 11 .

[0110] Figures 3 to 5 The side view, top view and partial view of the fixture table according to an embodiment of the present invention are respectively disclosed. Figures 3 to 5 As shown, in this embodiment, the fixture table 2 is composed of a pipeline device 21, a force measuring device 22, an angle measuring device 23, an analog signal measuring device, an air pressure signal measuring device, and a switch signal measuring device:

[0111] The pipeline device 21 provides the pneumatic valve group, pipeline accessories, etc. involved in the main valve test process;

[0112] The force measuring device 22 is used to measure the brake pedal force;

[0113] The angle measuring device 23 is used to measure the angle when the brake pedal is in action;

[0114] The analog signal measuring device is used to measure the output value of the analog signal of the main valve;

[0115] The air pressure signal measuring device is used to measure the air pressure value in the pipeline system;

[0116] The switch quantity signal measuring device is used to measure the switch quantity signal output value of the main valve.

[0117] Through the cooperation of the industrial computer 11, the force measuring device 22, the angle measuring device 23, etc., the relationship curves of the air pressure at the outlet of the brake master valve P21, P22, the pedal force, the voltage and angle of the 61 and 62 interfaces can be recorded, and the zero angle, the forward amount, the switch angle, the zero voltage, the electro-pneumatic stroke, and the gas-pneumatic stroke can be measured. Finally, the sealing characteristics of the electronically controlled brake master valve, the pedal angle-analog signal characteristic relationship, the pedal angle-pedal force characteristic relationship, the pedal angle-gas signal characteristic relationship, the gas-pneumatic stroke, the electro-pneumatic stroke, the zero point signal and other pedal characteristics can be detected.

[0118] Furthermore, the pipeline device 21 includes three pneumatic source components, a booster valve, a proportional control valve, an intake and exhaust tightening cylinder 211, a tightening cylinder for fixing the main valve, an air cylinder 212, a solenoid valve, pipeline accessories, etc.:

[0119] The pneumatic three-source component is an air source processing component, through which the air source can be purified and filtered to reach the pressure required by the system;

[0120] The booster valve increases the input pressure to a certain pressure and then outputs it;

[0121] The proportional regulating valve adjusts the air pressure proportionally and then outputs it;

[0122] The intake and exhaust pressing cylinder 211 uses the push rod extending from the cylinder to press against the intake inlet and exhaust outlet of the electric control brake master valve;

[0123] The pressing cylinder for fixing the main valve is used to press on the main valve base after the main valve is installed, so as to fix the main valve firmly and prevent it from moving;

[0124] The air cylinder 212 is used to store wind pressure;

[0125] The solenoid valve is used to control the air pressure flow direction of the pipeline.

[0126] Furthermore, the force measuring device 22 includes a servo motor 221, a gearbox 222, a transmission shaft 223, a bearing 224, a fixing frame 225, a longitudinal telescopic arm 226, a transverse telescopic arm 227, a test probe 228, a force sensor 229, etc.:

[0127] The servo motor 221 receives the control signal of the industrial computer and outputs it, and rotates to drive the telescopic arm to rotate;

[0128] The gearbox 222 decelerates and increases torque of the output of the servo motor 221;

[0129] The transmission shaft 223 transmits motion and force;

[0130] The bearing 224 is used to position and fix the rotating part;

[0131] The fixing frame 225 is used to provide a mounting bracket, similar to a mounting frame;

[0132] The longitudinal telescopic arm 226 is used for longitudinal telescopic adjustment;

[0133] The transverse telescopic arm 227 is used for transverse telescopic adjustment;

[0134] The test probe 228 is used to contact the contact piece of the pedal on the electric control brake master valve;

[0135] The force sensor 229 is used to collect the magnitude of the force applied to the probe.

[0136] Furthermore, the angle measuring device 23 includes a servo motor, a gearbox, a transmission shaft, a bearing, a fixing frame, a longitudinal telescopic arm, a transverse telescopic arm, a test probe, an angle encoder, etc.:

[0137] The servo motor receives the control signal of the industrial computer and outputs it, and rotates to drive the telescopic arm to rotate;

[0138] The gearbox decelerates and increases torque of the output of the servo motor;

[0139] The transmission shaft transmits motion and force;

[0140] The bearing is used to position and fix the rotating parts;

[0141] The fixing frame is used to provide a mounting bracket;

[0142] The longitudinal telescopic arm is used for longitudinal telescopic adjustment;

[0143] The transverse telescopic arm is used for transverse telescopic adjustment;

[0144] The test probe is used to contact the contact piece of the pedal on the electric control brake master valve;

[0145] The angle encoder is used to detect the rotation angle of the telescopic arm.

[0146] The force measuring device 22 and the angle measuring device 23 share basic common components and can realize the measurement of pedal force and pedal angle.

[0147] The analog signal measuring device is composed of an industrial computer, an AIO board, an electrical wiring harness, etc.

[0148] The air pressure signal measuring device is composed of an industrial computer, an AIO board, an electrical wiring harness, an air pressure sensor, etc.

[0149] The switch signal measuring device is composed of an industrial computer, a DIO board, an electrical wiring harness, etc.

[0150] The industrial computer is a computer system used to process data and achieve target control;

[0151] In this embodiment, the analog signal measuring device, the air pressure signal measuring device, the switch signal measuring device and the industrial computer controlling the system 1 may be the same device or multiple separate devices.

[0152] The AIO board is a collection board for collecting analog data;

[0153] The DIO board is a collection board for collecting switch quantity data;

[0154] The electrical harness is a general term for all cables that need to be connected;

[0155] The air pressure sensor is a sensor used to collect air pressure.

[0156] In this embodiment, the AIO board and the DIO board are integrated into the industrial computer.

[0157] In this embodiment, the operating platform 3 is composed of a profile truss 31 and a sheet metal panel 32:

[0158] The profile truss 31 is used to build the framework of the test device and fix the control system, fixture table and other equipment;

[0159] The sheet metal panel 32 is used to connect the trusses.

[0160] The following introduces the main process of performance testing using the electronically controlled brake master valve testing device:

[0161] Preparation process before the test: Place the electrically controlled brake master valve to be tested on the fixture table, connect the power supply and air source of the detection device, and open the test software of the control system;

[0162] Enter the program, select the model of the test product, fill in the serial number of the test product, operate the "Load Test Product" button on the program interface, and the fixture table will automatically fix the test product, seal the air control port, and return the fixture telescopic arm to zero.

[0163] Press the "Start Test" button on the operation program interface, and the test device will automatically test the test product according to the set test sequence;

[0164] Change the brake pedal position and the position of the solenoid valve at the air inlet of the electronically controlled brake master valve, and test the input and output characteristics of the electronically controlled brake master valve according to the set test conditions.

[0165] The electronically controlled brake master valve detection device proposed in the present invention can detect various pedal characteristics of the master valve at one time, including sealing characteristics, pedal angle-analog signal characteristic relationship, pedal angle-pedal force characteristic relationship, pedal angle-gas signal characteristic relationship, gas-air stroke, electric-air stroke and zero signal, etc. The detection results can be used to determine whether the master valve characteristics meet the requirements, thereby meeting the detection requirements of the master valve characteristics. In addition, the application of the device can effectively improve the consistency of the brake pedal feel of bidirectional electronic guided rubber-wheeled electric vehicles, and further detect product quality.

[0166] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "an" and / or "the" do not refer to the singular and may also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of the steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements.

[0167] The above embodiments are provided for persons familiar with the art to implement or use the present invention. Personnel familiar with the art can make various modifications or changes to the above embodiments without departing from the inventive concept of the present invention. Therefore, the protection scope of the present invention is not limited to the above embodiments, but should be the maximum scope of the innovative features mentioned in the claims.

Claims

1. An electronically controlled brake master valve performance detection device, characterized in that: Including control system, fixture table and operating table: The fixture table is connected to the operating table through a mechanical connection, installed on the operating table, and is used to place the electric control brake main valve; The control system is connected to the operating table through a mechanical connection and installed on the operating table; The control system is connected to the fixture table through an electrical connection, and is used to control the test conditions of the electric control brake master valve and detect the input and output characteristics of the electric control brake master valve; The operating table is used to provide the overall framework of the device.

2. The electronically controlled brake master valve performance detection device according to claim 1, characterized in that: The control system includes an industrial computer, a display, a servo control system, a pipeline control system and an electrical control system: The industrial computer is used to carry the control software and operate and control the entire detection device; The display provides a human-machine interface between the operator and the control system; The servo control system controls the servo motor to drive the fixture device of the fixture table to rotate; The pipeline control system controls the on-off of the main valve inlet and exhaust pipelines; The electrical control system controls the operation of the electrical equipment of the detection device.

3. The electronically controlled brake master valve performance detection device according to claim 1, characterized in that: The fixture table includes a pipeline device, a force measuring device, an angle measuring device, an analog signal measuring device, an air pressure signal measuring device and a switch signal measuring device: The pipeline device provides the pneumatic valve group and pipeline accessories involved in the main valve testing process; The force measuring device is used to measure the brake pedal force; The angle measuring device is used to measure the angle of the brake pedal when it is in action; The analog signal measuring device is used to measure the analog signal output value of the main valve; The air pressure signal measuring device is used to measure the air pressure value in the pipeline system; The switch quantity signal measuring device is used to measure the switch quantity signal output value of the main valve.

4. The electronically controlled brake master valve performance detection device according to claim 3 is characterized in that: The pipeline device includes three pneumatic source parts, a booster valve, a proportional control valve, an intake and exhaust tightening cylinder, a tightening cylinder for fixing the main valve, an air cylinder, a solenoid valve and pipeline accessories: The pneumatic three-source component is an air source processing component used to purify and filter the air source and make the air source reach the pressure required by the system; The booster valve increases the input pressure to a certain pressure and then outputs it; The proportional regulating valve adjusts the air pressure proportionally and then outputs it; The intake and exhaust pressing cylinder extends a push rod to press against the intake inlet and exhaust outlet of the electric control brake master valve; The pressing cylinder for fixing the main valve is used to press on the main valve base after the main valve is installed, so as to press and stabilize the main valve; The air cylinder is used to store wind pressure; The solenoid valve is used to control the air pressure flow direction of the pipeline.

5. The electronically controlled brake master valve performance detection device according to claim 3, characterized in that: The force measuring device includes a servo motor, a gearbox, a transmission shaft, a bearing, a fixing frame, a longitudinal telescopic arm, a transverse telescopic arm, a test probe, and a force sensor: The servo motor receives a control signal from the control system and outputs the signal, and rotates to drive the telescopic arm to rotate; The gearbox decelerates and increases torque of the output of the servo motor; The transmission shaft transmits motion and force; The bearing is used to position and fix the rotating parts; The fixing frame is used to provide a mounting bracket; The longitudinal telescopic arm is used for longitudinal telescopic adjustment; The transverse telescopic arm is used for transverse telescopic adjustment; The test probe is used to contact the pedal on the electronically controlled brake master valve; The force sensor is used to collect the magnitude of the force applied to the probe.

6. The electronically controlled brake master valve performance detection device according to claim 3, characterized in that: The angle measuring device includes a servo motor, a gearbox, a transmission shaft, a bearing, a fixing frame, a longitudinal telescopic arm, a transverse telescopic arm, a test probe, and an angle encoder: The servo motor receives a control signal from the control system and outputs the signal, and rotates to drive the telescopic arm to rotate; The gearbox decelerates and increases torque of the output of the servo motor; The transmission shaft transmits motion and force; The bearing is used to position and fix the rotating parts; The fixing frame is used to provide a mounting bracket; The longitudinal telescopic arm is used for longitudinal telescopic adjustment; The transverse telescopic arm is used for transverse telescopic adjustment; The test probe is used to contact the contact piece of the pedal on the electric control brake master valve; The angle encoder is used to detect the rotation angle of the telescopic arm.

7. The electronically controlled brake master valve performance detection device according to claim 3, characterized in that: The analog signal measuring device includes an industrial computer, an AIO board, and an electrical wiring harness; The air pressure signal measuring device includes an industrial computer, an AIO board, an electrical wiring harness, and an air pressure sensor; The switch signal measuring device includes an industrial computer, a DIO board, and an electrical wiring harness; The industrial computer is a computer system used to process data and achieve target control; The AIO board is a collection board for collecting analog data; The DIO board is a collection board for collecting switch quantity data; The electrical harness is all the cables that need to be connected; The air pressure sensor is a sensor used to collect air pressure.

8. The electronically controlled brake master valve performance detection device according to claim 1, characterized in that: The operating platform includes profile trusses and sheet metal panels: The profile truss is used to build the framework of the detection device and fix the control system and the fixture table; The sheet metal panel is used to connect the profile trusses.

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