Brake performance detection device for automotive brake

Abstract

The invention relates to the technical field of automobile safety detection, and discloses a brake performance detection device for an automobile brake, which comprises an automobile brake test bench which is used as a core platform of the whole detection device and is used for simulating key parameters involved in the actual braking process of an automobile. By integrating a high-precision sensor and an advanced data acquisition and analysis system, various key parameters such as braking force, abrasion loss, temperature and braking time in the braking process can be accurately measured in real time. The high-precision sensors ensure the accuracy and reliability of data, and a solid foundation is provided for the evaluation of the braking performance. And meanwhile, the data acquisition and analysis system can process and analyze the acquired data in real time, so that the detection precision is further improved. Due to the high-precision detection capability, the device can more accurately evaluate the brake performance of the brake pad, and powerful data support is provided for optimization and improvement of an automobile brake system.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of automobile safety detection, in particular to a brake performance detection device for an automobile brake. BACKGROUND

[0002] The brake performance of an automobile is an important guarantee for safe driving of the automobile and is directly related to the life and property safety of the driver and passengers. With the rapid development of the automobile industry, the driving speed of the automobile is continuously improved, the road traffic condition is increasingly complex, and the requirement for the brake performance of the automobile is also higher and higher. Therefore, it is particularly important to accurately and efficiently detect the brake performance of the automobile.

[0003] At present, the detection methods for the brake performance of the automobile mainly include bench test detection and road test detection. The bench test detection is mainly carried out by using an automobile brake test bench, the braking process of the automobile on the road is simulated, the parameters such as the braking force, the braking distance and the braking deceleration of the automobile are measured, and the brake performance of the automobile is evaluated. However, the existing automobile brake test bench has some deficiencies, such as insufficient equipment precision, non-standard test method and low automation degree, which may affect the accuracy of the detection result and even cause misjudgment.

[0004] In addition, for some special road conditions or working conditions (such as rugged mountain roads, long downhill roads, heavy loads and the like), the brake system of the automobile may fail due to excessive temperature, resulting in a decrease in brake performance and even causing a safety accident. However, the existing automobile brake test bench often cannot completely simulate these complex road conditions or working conditions, and it is difficult to comprehensively evaluate the reliability and adaptability of the brake system of the automobile.

[0005] Therefore, it is of great significance to develop a high-precision, high-efficiency and intelligent brake performance detection device for an automobile brake for improving the accuracy, comprehensiveness and reliability of the detection of the brake performance of the automobile and ensuring the safety of the driving of the automobile. SUMMARY

[0006] The application aims to provide a brake performance detection device for an automobile brake to solve the problems in the background.

[0007] To achieve the above-mentioned purpose, the application provides the following technical scheme: a brake performance detection device for an automobile brake, comprising An automobile brake test bench, as the core platform of the entire detection device, is used to simulate the key parameters involved in the actual braking process of the automobile, including but not limited to the braking force, the braking distance, the braking time and the like, so as to comprehensively evaluate the brake performance; A motor base, as the support structure of the motor, is made of high-strength material to ensure the stability and vibration control of the motor during operation; The bearing support seat is used for supporting the bearing, ensuring the stability and concentricity of the rotating shaft during high-speed rotation, and reducing the measurement error caused by vibration and eccentricity. The motor, as a power source, is fixedly installed on the motor base, and the output end thereof is fixedly connected with the rotating shaft through a shaft coupling, thereby providing stable rotating power for the brake disc. The rotating shaft is fixedly connected with the output end of the motor at one end, and is fixedly connected with the brake disc on the automobile brake test bed through the bearing support seat at the other end, thereby realizing rotating connection and ensuring that the brake disc can rotate with the operation of the motor. The brake disc, as a key component of the braking system, is fixedly installed at the end of the rotating shaft, and cooperates with the brake test system assembly to simulate the friction and wear during the actual braking process. The brake test system assembly includes a brake caliper body, a hydraulic transmission piston, a brake friction plate and a hydraulic transmission system installed through a connecting frame, and is used for applying braking force to the brake disc and measuring various performance parameters during the braking process. The intelligent control system includes an intelligent control unit, a man-machine interface and a safety protection unit, is responsible for real-time monitoring and analysis of the operation data of the brake disc, and feeds back the analysis results to the operation terminal through data transmission, thereby realizing automatic and intelligent control of the test process. The intelligent control unit adopts advanced microprocessors and algorithms, can automatically adjust the braking system parameters such as braking force and braking time according to the preset test program, optimizes the braking effect, and further processes and analyzes the collected data in real time. The man-machine interface adopts a touch screen or computer software, provides an intuitive and friendly operation interface, facilitates the user to input test instructions, view test data and set test parameters, and displays real-time data and results during the test process. The safety protection unit includes an emergency stop button, an overload protection system and the like, is used for automatically cutting off the power supply in an emergency to prevent equipment overload and personnel injury, and ensures operation safety; at the same time, is linked with the man-machine interface to display the equipment state and alarm information in real time, thereby ensuring efficient and safe test process.

[0008] Preferably, the height lifting module is composed of a support frame and an electric push rod, can adjust the height of the brake disc according to different vehicle models, and ensures precise docking of the brake disc with the braking system of different vehicle models; the extension end of the electric push rod is fixedly connected with a sliding block, the sliding block moves on the guide rail of the support frame, and realizes stable lifting of the data acquisition and analysis system. The position moving module is composed of an electromagnetic slide rail and an electromagnetic slide block, realizes horizontal displacement of the electromagnetic slide block on the electromagnetic slide rail through electromagnetic driving, thereby adjusting the position of the data acquisition and analysis system, and ensuring the accuracy and comprehensiveness of data acquisition.

[0009] Preferably, it also includes a data acquisition and analysis system, including a data acquisition box mounted on an electromagnetic rail via an electromagnetic slider, and a data processing unit and storage unit built into the data acquisition box, which are responsible for acquiring various parameters during the braking process in real time, processing and analyzing the data, and evaluating the braking performance of the brake pads; it also includes a communication interface, located at the bottom of the data acquisition box, which is connected to the control system via a data transmission line to realize real-time data transmission and analysis, ensuring the accuracy and real-time nature of the test results.

[0010] Preferably, the front end of the data acquisition box is equipped with a high-precision sensor that can measure key parameters such as the friction coefficient, wear, temperature, and braking time of the brake in real time during the braking process.

[0011] Preferably, the high-precision sensor includes a force sensor for measuring the magnitude of braking force during braking; a displacement sensor for measuring the displacement change between the brake disc and the brake friction pads, thereby calculating the amount of wear; a temperature sensor for monitoring temperature changes during braking to prevent a decrease in braking performance due to excessively high temperatures; and a speed sensor for measuring the rotational speed of the brake disc, thereby calculating the braking time.

[0012] Preferably, the specific steps for measuring the friction coefficient, wear, temperature, and braking time parameters of the brake using various sensors during the braking process, and for performing condition monitoring and fault diagnosis, are as follows: Through the friction area of ​​the brake ( ) and braking pressure ( The product of ) is used to calculate the braking force ( Combining the physical properties of friction materials (such as indentation hardness and thermal conductivity), through formulas Calculate the friction coefficient; based on the actual friction coefficient of the friction surface continuously monitored, denoted as... ,in Represents time, with a threshold set. The friction coefficient measured in real time With the preset threshold A comparison is made, and when the monitored coefficient of friction is lower than a set threshold (i.e.) < The system will automatically trigger an alarm signal to indicate a decrease in braking performance, requiring timely replacement of the friction pads; at the same time, the system records the wear amount during each braking process and predicts the remaining life of the friction pads through cumulative calculation; Based on the average unit pressure (P) and friction work per unit area of ​​the friction plate ( ), combined with material density ( ) and friction surface area ( ), through formula ,in Braking distance, The system calculates volumetric wear based on frictional force; when the volumetric wear exceeds a preset limit, the system issues another alarm to remind the user to perform a thorough inspection. Utilizing the law of conservation of energy, the vehicle's kinetic energy is converted into the heat energy of the brake disc, combined with the material's specific heat capacity (…). ) through formula Calculate the brake disc temperature change; combine with real-time temperature ( ) and rate of temperature rise ( The system uses Kalman filtering to predict future temperatures. When the predicted temperature exceeds the safety limit, the system will automatically trigger an alarm signal and immediately activate the cooling mechanism to prevent the brake discs from overheating and ensure driving safety. At the same time, the system records temperature rise data each time and optimizes the braking system design and improves overall performance through big data analysis. Using braking acceleration (a) and braking distance (s), through the formula ,in, Given the initial velocity, calculate the time; by collecting data samples of all braking times, calculate the average braking time. Calculate the standard deviation of braking time Through formula ,in It is the first A data point for each braking time, if a certain braking time If the data point is an outlier, it is considered an anomaly and may indicate problems such as braking lag; conversely, if... exist If the data falls within the specified range, it is considered normal data.

[0013] Preferably, the data processing unit employs a high-performance microprocessor and algorithm to process and analyze the acquired digital signals in real time, evaluate the braking performance of the brake pads, such as the stability of the friction coefficient, the trend of wear, and braking time, and transmit the evaluation information to the intelligent control unit.

[0014] Preferably, the storage unit uses a high-capacity hard disk or flash memory to store test data, test results, and test reports, allowing users to view and analyze historical data at any time, providing data support for the optimization and improvement of the braking system.

[0015] This invention provides a braking performance testing device for automobile brakes. It has the following advantages: (1) The present application integrates high-precision sensors and advanced data acquisition and analysis systems, which can measure various key parameters in the braking process in real time and accurately, such as braking force, wear, temperature and braking time, etc. These high-precision sensors ensure the accuracy and reliability of the data, providing a solid foundation for the evaluation of braking performance. At the same time, the data acquisition and analysis system can process and analyze the collected data in real time, further improving the detection accuracy. This high-precision detection capability enables the device to more accurately evaluate the braking performance of the brake pad, providing strong data support for the optimization and improvement of the automobile braking system.

[0016] (2) The present application is equipped with an intelligent control system, which can monitor and analyze the running data of the brake disc in real time. Through advanced data processing algorithms, the intelligent control system can automatically adjust the test parameters to ensure the accuracy and stability of the test process. At the same time, the system can also feedback the analysis results to the operation terminal in real time, so that the operator can know the test progress and results at any time. This highly automated and intelligent control method not only reduces the workload of the operator and improves the test efficiency, but also reduces the influence of human factors on the test results, ensuring the objectivity and accuracy of the test results.

[0017] (3) The man-machine interface of the device is designed to be very intuitive and friendly, using a touch screen or computer software as the operation interface. This design allows users to easily input test instructions, view test data and set test parameters without complex training. At the same time, the operation interface also provides a variety of test data and result display methods, such as real-time curve graphs, data reports, etc., to facilitate users to deeply analyze and understand the test results. This convenient operation method and good user experience make the device have a wide application prospect in the field of automobile braking performance detection.

[0018] (4) The device is equipped with a perfect safety protection unit, including an emergency stop button, an overload protection system, etc. In an emergency, the operator can quickly press the emergency stop button to cut off the power of the device to prevent equipment overload and personal injury. At the same time, the overload protection system can monitor the running state of the device in real time, and once it finds abnormal conditions such as overload, it will automatically cut off the power to protect the equipment from damage. This comprehensive safety protection measure ensures the safe operation of the test process, providing a solid guarantee for the operator and the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a front view of the overall structure of the present application; Figure 2 is a perspective view of the structure of the present application; Figure 3It is a perspective view of the data acquisition box 361 and the high-precision sensor of the application; Figure 4 It is a schematic view of the component state of the brake test system of the application; Figure 5 It is a schematic flow chart of the control system of the application; In the figure: automobile brake test bench 21, motor base 22, motor 23, bearing support seat 24, rotating shaft 25, brake disc 26, brake test system component 27, brake caliper body 271, hydraulic transmission piston 272, brake friction plate 273, hydraulic transmission system 274, support frame 31, electric push rod 32, sliding block 33, electromagnetic sliding rail 34, electromagnetic sliding block 35, data acquisition box 361, force sensor 362, displacement sensor 363, temperature sensor 364, speed sensor 365, intelligent control system 41. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0021] Examples of the embodiments are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the application, and cannot be understood as a limitation of the application.

[0022] In the application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the application can be understood according to the specific circumstances.

[0023] A preferred embodiment of a brake performance detection device for an automobile brake provided by the application is as shown in the figure Figures 1-5 The brake performance detection device for an automobile brake comprises The automobile brake test bench 21 is the core platform of the entire detection device, which is used to simulate the key parameters involved in the actual braking process of the automobile, including but not limited to braking force, braking distance, braking time, etc., to comprehensively evaluate the braking performance; The motor base 22, as the support structure of the motor 23, is made of high-strength material to ensure the stability and vibration control of the motor 23 during operation; The bearing support seat 24 is used to support the bearing to ensure the stability and concentricity of the rotating shaft 25 during high-speed rotation, and to reduce measurement errors caused by vibration and eccentricity; The motor 23, as the power source, is fixedly installed on the motor base 22, and its output end is fixedly connected with the rotating shaft 25 through a shaft coupling, providing stable rotary power for the brake disc 26; The rotating shaft 25 is fixedly connected with the output end of the motor 23 at one end, and is fixedly connected with the brake disc 26 on the automobile brake test bench 21 through a bolt at the other end, realizing rotary connection and ensuring that the brake disc 26 can rotate with the operation of the motor 23; The brake disc 26, as a key component of the braking system, is fixed at the end of the rotating shaft 25 and cooperates with the brake test system assembly 27 to simulate the friction and wear during actual braking; The brake test system assembly 27 includes a brake caliper body 271, a hydraulic transmission piston 272, a brake friction plate 273, and a hydraulic transmission system 274 installed through a connecting frame 28, for applying braking force to the brake disc 26 and measuring various performance parameters during braking; The intelligent control system 41 includes an intelligent control unit, a human-computer interaction interface, and a safety protection unit, responsible for real-time monitoring and analysis of the operation data of the brake disc 26, and feeding back the analysis results to the operation terminal through data transmission, realizing automatic and intelligent control of the test process; The intelligent control unit uses advanced microprocessors and algorithms to automatically adjust braking system parameters such as braking force and braking time according to the preset test program, to optimize braking effect and further process and analyze the collected data in real time; The human-computer interaction interface uses a touch screen or computer software to provide an intuitive and friendly operation interface, allowing users to input test instructions, view test data, and set test parameters, while displaying real-time data and results during the test process; The safety protection unit includes an emergency stop button and an overload protection system, which automatically cuts off the power supply in emergency situations to prevent equipment overload and personal injury, ensuring safe operation; at the same time, it is linked with the human-computer interaction interface to display the equipment status and alarm information in real time, ensuring efficient and safe testing; The height adjustment module consists of a support frame 31 and an electric push rod 32, which can adjust the height of the brake disc 26 according to different vehicle models to ensure precise docking of the brake disc 26 with different vehicle braking systems; the extension end of the electric push rod 32 is fixedly connected with a sliding block 33, which moves on the guide rail of the support frame 31 to realize stable lifting of the data acquisition and analysis system; The position movement module consists of an electromagnetic slide rail 34 and an electromagnetic slider 35. The electromagnetic slider 35 is horizontally displaced on the electromagnetic slide rail 34 by electromagnetic drive, thereby adjusting the position of the data acquisition and analysis system to ensure the accuracy and comprehensiveness of data acquisition. The data acquisition and analysis system includes a data acquisition box 361 mounted on an electromagnetic slide rail 34 via an electromagnetic slider 35, and a data processing unit and a storage unit built into the data acquisition box 361. It is responsible for acquiring various parameters during the braking process in real time, processing and analyzing the data, and evaluating the braking performance of the brake pads. The data acquisition box 361, as the core component of the data acquisition and analysis system, is equipped with a high-precision sensor at the front end, which can measure key parameters such as the friction coefficient, wear, temperature, and braking time of the brake in real time during the braking process. High-precision sensors include a force sensor 362 for measuring the magnitude of braking force during braking; a displacement sensor 363 for measuring the displacement change between the brake disc 26 and the brake friction pad 273, thereby calculating the amount of wear; a temperature sensor 364 for monitoring temperature changes during braking to prevent a decrease in braking performance due to excessive temperature; and a speed sensor 365 for measuring the rotational speed of the brake disc 26, thereby calculating the braking time. The specific steps for measuring the friction coefficient, wear, temperature, and braking time parameters of the brake during the braking process using various sensors, and for condition monitoring and fault diagnosis, are as follows: Through the friction area of ​​the brake ( ) and braking pressure ( The product of ) is used to calculate the braking force ( Combining the physical properties of friction materials (such as indentation hardness and thermal conductivity), through formulas Calculate the friction coefficient; based on the actual friction coefficient of the friction surface continuously monitored, denoted as... ,in Represents time, with a threshold set. The friction coefficient measured in real time With the preset threshold A comparison is made, and when the monitored coefficient of friction is lower than a set threshold (i.e.) < The system will automatically trigger an alarm signal to indicate a decrease in braking performance, requiring timely replacement of the friction pads; at the same time, the system records the wear amount during each braking process and predicts the remaining life of the friction pads through cumulative calculation; Based on the average unit pressure (P) and friction work per unit area of ​​the friction plate ( ), combined with material density ( ) and friction surface area ( ), through formula wherein is the braking distance, is the friction force, the volume wear is calculated; when the volume wear exceeds the preset limit value, the system issues a warning again, reminding of deep maintenance; Using the law of conservation of energy, the kinetic energy of the vehicle is converted into the heat energy of the brake disc, combined with the specific heat capacity of the material (Cp) The temperature change of the brake disc is calculated by the formula Combined with the real-time temperature (T) and the temperature rise rate (R) , the Kalman filter is used to predict the future temperature: when the predicted temperature exceeds the safety limit value, the system will automatically trigger an alarm signal, and the system will immediately start the cooling mechanism to prevent the brake disc from overheating and ensure driving safety; At the same time, the system records the temperature rise data each time, optimizes the brake system design through big data analysis, and improves the overall performance; Through the braking acceleration (a) and the braking distance (s), the formula is used, wherein, is the initial speed, the time is calculated; by collecting all data samples of braking time, the average value of braking time is calculated, and the standard deviation of braking time is calculated by the formula wherein is the data point of the i-th braking time, if a certain braking time , it is considered that the data point is an abnormal value, and there may be problems such as braking drag; on the contrary, if is within the range of , it is considered to be normal data; The communication interface 366 is arranged at the bottom of the data acquisition box 361, connected with the control system through the data transmission line, realizes real-time transmission and analysis of data, and ensures the accuracy and real-time of test results; The data processing unit uses high-performance microprocessors and algorithms to process and analyze the collected digital signals in real time, evaluate the braking performance of the brake pad, such as the stability of the friction coefficient, the change trend of the wear amount, and the braking time, and transmit the evaluation information to the intelligent control unit; The storage unit uses a large-capacity hard disk or flash memory to store test data, test results, and detection reports and other information, which is convenient for users to view and analyze historical data at any time, and provides data support for optimization and improvement of the brake system.

[0024] ​In use, first, in the device preparation and initialization stage, the operator will adjust the height lifting module according to the vehicle model to be tested to ensure that the brake disc can be precisely connected with the brake system of different vehicle models. At the same time, the intelligent control system 41 will also be initialized, including the input and calibration of test parameters. Next, the device enters the brake process simulation stage, the motor 23 drives the brake disc 26 to rotate through the rotating shaft, simulating the rotation state of the vehicle in the actual braking process. At the same time, the brake test system component 27 will apply a braking force to the brake disc to simulate the friction and wear during the actual braking process. During the braking process, the data acquisition and analysis system will measure various key parameters in real time, such as the size of the braking force, the change of the wear amount, the rise of the temperature, and the length of the braking time, etc. These data will be transmitted to the data processing unit in real time for analysis and processing to evaluate the braking performance of the brake pad. In addition, the system will continuously monitor the actual friction coefficient of the friction surface and compare it with the preset threshold. Once the monitored friction coefficient is lower than the set threshold, the system will automatically trigger an alarm signal to prompt the decline of the braking performance and the need to replace the friction plate in time. At the same time, the system will also record the wear amount of each braking process, predict the remaining life of the friction plate through cumulative calculation, and perform state monitoring and fault diagnosis. After the test is completed, the intelligent control system will feed back the analysis results to the operation terminal to display the real-time data and results during the test. At the same time, the storage unit will also store test data, test results, and detection reports, etc. information, so that users can view and analyze historical data at any time. Finally, in the event of an emergency, the safety protection unit will automatically cut off the power supply to prevent equipment overload and personal injury, ensuring the safe operation of the test process.

[0025] It should be noted that, in this document, the terms such as first and second are used merely to distinguish one entity or operation from another, and are not necessarily required to have any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device.

[0026] Finally, it should be noted that the above description is only for the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A braking performance testing device for automobile brakes, characterized in that, Including The vehicle braking test bench (21) is used to simulate the key parameters involved in the actual braking process of a vehicle, including but not limited to braking force, braking distance, braking time, etc., in order to comprehensively evaluate braking performance. The motor base (22), as the supporting structure of the motor (23), is made of high-strength material to ensure the stability and vibration control of the motor (23) during operation; The bearing support seat (24) is used to support the bearing, ensure the stability and concentricity of the rotating shaft (25) during high-speed rotation, and reduce measurement errors caused by vibration and eccentricity. The motor (23) is fixedly mounted on the motor base (22), and its output end is fixedly connected to the rotating shaft (25) through a coupling to provide stable rotational power for the brake disc (26); The rotating shaft (25) is fixedly connected at one end to the output end of the motor (23), and the other end is fixed to the brake disc (26) on the automobile brake test bench (21) by bolts through the bearing support seat (24) to achieve a rotating connection, so as to ensure that the brake disc (26) can rotate with the operation of the motor (23); The brake disc (26) is fixed at the end of the rotating shaft (25) and works with the brake test system component (27) to simulate the friction and wear during actual braking. The brake test system assembly (27) includes a brake caliper (271), a hydraulically driven piston (272), brake friction pads (273), and a hydraulic transmission system (274) mounted via a connecting bracket (28).

2. The braking performance testing device for automobile brakes according to claim 1, characterized in that: It also includes a height lifting module, which consists of a support frame (31) and an electric push rod (32). The height of the brake disc (26) can be adjusted according to different vehicle models to ensure that the brake disc (26) is accurately connected to the braking system of different vehicle models. The telescopic end of the electric push rod (32) is fixedly connected to a sliding block (33). The sliding block (33) moves on the guide rail of the support frame (31) to realize the smooth lifting of the data acquisition and analysis system. The position movement module consists of an electromagnetic slide rail (34) and an electromagnetic slider (35). The electromagnetic slider (35) is moved horizontally on the electromagnetic slide rail (34) by electromagnetic drive, thereby adjusting the position of the data acquisition and analysis system and ensuring the accuracy and comprehensiveness of data acquisition.

3. The braking performance testing device for automobile brakes according to claim 1, characterized in that: It also includes a data acquisition and analysis system, including a data acquisition box (361) mounted on an electromagnetic slide rail (34) via an electromagnetic slider (35), and a data processing unit and storage unit built into the data acquisition box (361), which are responsible for acquiring various parameters during the braking process in real time, processing and analyzing the data, and evaluating the braking performance of the brake pads; it also includes a communication interface (366) located at the bottom of the data acquisition box (361), which is connected to the control system via a data transmission line to realize real-time data transmission and analysis, and ensure the accuracy and real-time nature of the test results.

4. The braking performance testing device for automobile brakes according to claim 3, characterized in that: The data acquisition box (361) is equipped with a high-precision sensor at the front end, which can measure key parameters such as friction coefficient, wear, temperature and braking time of the brake in real time during the braking process.

5. The braking performance testing device for automobile brakes according to claim 4, characterized in that: The high-precision sensors include a force sensor (362) for measuring the magnitude of braking force during braking; a displacement sensor (363) for measuring the displacement change between the brake disc (26) and the brake friction pad (273) to calculate the amount of wear; a temperature sensor (364) for monitoring temperature changes during braking to prevent a decrease in braking performance due to excessive temperature; and a speed sensor (365) for measuring the rotational speed of the brake disc (26) to calculate the braking time.

6. The braking performance testing device for automobile brakes according to claim 5, characterized in that: The specific steps for measuring the friction coefficient, wear, temperature, and braking time parameters of the brake during the braking process using various sensors, and for condition monitoring and fault diagnosis, are as follows: Through the friction area of ​​the brake ( ) and braking pressure ( The product of ) is used to calculate the braking force ( Combining the physical properties of friction materials (such as indentation hardness and thermal conductivity), through formulas Calculate the friction coefficient; based on the actual friction coefficient of the friction surface continuously monitored, denoted as... ,in Represents time, with a threshold set. The friction coefficient measured in real time With the preset threshold A comparison is made, and when the monitored coefficient of friction is lower than a set threshold (i.e.) < The system will automatically trigger an alarm signal to indicate a decrease in braking performance, requiring timely replacement of the friction pads; at the same time, the system records the wear amount during each braking process and predicts the remaining life of the friction pads through cumulative calculation; Based on the average unit pressure (P) and friction work per unit area of ​​the friction plate ( ), combined with material density ( ) and friction surface area ( ), through formula ,in Braking distance, The system calculates volumetric wear based on frictional force; when the volumetric wear exceeds a preset limit, the system issues another alarm to remind the user to perform a thorough inspection. Utilizing the law of conservation of energy, the vehicle's kinetic energy is converted into the heat energy of the brake disc, combined with the material's specific heat capacity (…). ) through formula Calculate the brake disc temperature change; combine with real-time temperature ( ) and rate of temperature rise ( The system uses Kalman filtering to predict future temperatures. When the predicted temperature exceeds the safety limit, the system will automatically trigger an alarm signal and immediately activate the cooling mechanism to prevent the brake discs from overheating and ensure driving safety. At the same time, the system records temperature rise data each time and optimizes the braking system design and improves overall performance through big data analysis. Using braking acceleration (a) and braking distance (s), through the formula ,in, Given the initial velocity, calculate the time; by collecting data samples of all braking times, calculate the average braking time. Calculate the standard deviation of braking time Through formula ,in It is the first A data point for each braking time, if a certain braking time If the data point is an outlier, it is considered an anomaly and may indicate problems such as braking lag; conversely, if... exist If the data falls within the specified range, it is considered normal data.

7. The braking performance testing device for automobile brakes according to claim 3, characterized in that: The data processing unit uses a high-performance microprocessor and algorithms to process and analyze the collected digital signals in real time, evaluate the braking performance of the brake pads, such as the stability of the friction coefficient, the trend of wear, and the braking time, and transmit the evaluation information to the intelligent control unit.

8. The braking performance testing device for automobile brakes according to claim 3, characterized in that: The storage unit uses a large-capacity hard disk or flash memory to store test data, test results, and test reports, allowing users to view and analyze historical data at any time and providing data support for the optimization and improvement of the braking system.

9. A braking performance testing device for automobile brakes according to claim 1, characterized in that: It also includes an intelligent control system (41), which includes an intelligent control unit, a human-machine interface and a safety protection unit, responsible for real-time monitoring and analysis of the operating data of the brake disc (26), and feeding back the analysis results to the operation terminal through data transmission, so as to realize the automation and intelligent control of the test process; The intelligent control unit uses advanced microprocessors and algorithms, which can automatically adjust braking system parameters, such as braking force and braking time, according to preset test programs to optimize braking effect, and further process and analyze the collected data in real time. The human-computer interaction interface adopts a touch screen or computer software, providing an intuitive and user-friendly operating interface, which makes it convenient for users to input test commands, view test data and set test parameters, while displaying real-time data and results during the test process; The safety protection unit includes an emergency stop button and an overload protection system, which are used to automatically cut off the power supply in emergency situations to prevent equipment overload and personal injury, and ensure operational safety. At the same time, it is linked with the human-machine interface to display the equipment status and alarm information in real time, ensuring the efficiency and safety of the testing process.

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