A braking performance testing device for automobile brakes

Abstract

This invention relates to the field of automotive safety testing technology and discloses a braking performance testing device for automotive brakes. The device includes an automotive brake test bench, which serves as the core platform for simulating key parameters involved in actual braking. By integrating high-precision sensors and an advanced data acquisition and analysis system, this invention can measure various key parameters during the braking process, such as braking force, wear, temperature, and braking time, in real time and accurately. These high-precision sensors ensure the accuracy and reliability of the data, providing a solid foundation for braking performance evaluation. Simultaneously, the data acquisition and analysis system can process and analyze the acquired data in real time, further improving the accuracy of the test. This high-precision testing capability enables the device to more accurately evaluate the braking performance of brake pads, providing strong data support for the optimization and improvement of automotive braking systems.

Description

Technical Field

[0001] This invention relates to the field of automotive safety testing technology, specifically to a device for testing the braking performance of automotive brakes. Background Technology

[0002] The braking performance of a vehicle is a crucial guarantee for safe driving, directly impacting the lives and property of drivers and passengers. With the rapid development of the automotive industry, vehicle speeds are constantly increasing, and road traffic conditions are becoming increasingly complex, placing ever higher demands on vehicle braking performance. Therefore, accurate and efficient testing of vehicle braking performance is of paramount importance.

[0003] Currently, the testing methods for automotive braking performance are mainly divided into two types: bench testing and road testing. Bench testing is mainly conducted using automotive braking test benches. By simulating the braking process of a car on the road, parameters such as braking force, braking distance, and braking deceleration are measured to evaluate the vehicle's braking performance. However, existing automotive braking test benches have some shortcomings, such as insufficient equipment precision, non-standard testing methods, and low automation. These problems may affect the accuracy of the test results and even lead to misjudgments.

[0004] Furthermore, under certain special road conditions or operating conditions (such as rugged mountain roads, long downhill slopes, heavy loads, etc.), the vehicle's braking system may fail due to excessive temperature, leading to a decrease in braking performance and even causing safety accidents. However, existing vehicle braking test benches often cannot fully simulate these complex road conditions or operating conditions, making it difficult to comprehensively evaluate the reliability and adaptability of the vehicle's braking system.

[0005] Therefore, developing a high-precision, high-efficiency, and intelligent vehicle brake performance testing device is of great significance for improving the accuracy, comprehensiveness, and reliability of vehicle brake performance testing and ensuring vehicle driving safety. Summary of the Invention

[0006] The purpose of this invention is to provide a braking performance testing device for automobile brakes, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a braking performance testing device for automobile brakes, comprising:

[0008] The automotive braking test bench, as the core platform of the entire testing device, is used to simulate the key parameters involved in the actual braking process of a car, including but not limited to braking force, braking distance, braking time, etc., in order to comprehensively evaluate braking performance.

[0009] The motor base, serving as the motor's supporting structure, is made of high-strength materials to ensure the motor's stability and vibration control during operation.

[0010] Bearing support housing is used to support the bearing, ensure the stability and concentricity of the shaft during high-speed rotation, and reduce measurement errors caused by vibration and eccentricity.

[0011] The motor, as a power source, is fixedly installed on the motor base, and its output end is fixedly connected to the rotating shaft through a coupling to provide stable rotational power to the brake disc.

[0012] The rotating shaft is fixedly connected to the output end of the motor at one end, and the other end is fixed to the brake disc on the automotive brake test bench with bolts through a bearing support seat to achieve a rotatable connection, ensuring that the brake disc can rotate with the operation of the motor.

[0013] The brake disc, as a key component of the braking system, is fixed at the end of the shaft and works in conjunction with the brake testing system components to simulate the friction and wear conditions during actual braking.

[0014] The brake test system components include a brake caliper mounted via a connecting bracket, a hydraulically driven piston, brake friction pads, and a hydraulic transmission system, used to apply braking force to the brake disc and measure various performance parameters during the braking process;

[0015] The intelligent control system, including an intelligent control unit, a human-machine interface, and a safety protection unit, is responsible for real-time monitoring and analysis of the brake disc's operating data. It transmits the analysis results back to the operating terminal via data transmission, thereby achieving automated and intelligent control of the testing process.

[0016] 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.

[0017] 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;

[0018] 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.

[0019] Preferably, it also includes a height lifting module, which consists of a support frame and an electric push rod. The height of the brake disc can be adjusted according to different vehicle models to ensure precise alignment between the brake disc and the braking system of different vehicle models. The telescopic end of the electric push rod is fixedly connected to a sliding block, which moves on the guide rail of the support frame to realize the smooth lifting of the data acquisition and analysis system.

[0020] The position movement module consists of an electromagnetic slide rail and an electromagnetic slider. The electromagnetic slider is driven by electromagnetic force to move horizontally on the electromagnetic slide rail, thereby adjusting the position of the data acquisition and analysis system and ensuring the accuracy and comprehensiveness of data acquisition.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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:

[0025] 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;

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] This invention provides a braking performance testing device for automobile brakes. It has the following advantages:

[0032] (1) This invention, by integrating high-precision sensors and an advanced data acquisition and analysis system, can measure various key parameters during the braking process in real time and accurately, such as braking force, wear, temperature, and braking time. These high-precision sensors ensure the accuracy and reliability of the data, providing a solid foundation for evaluating braking performance. Simultaneously, the data acquisition and analysis system can process and analyze the acquired data in real time, further improving the accuracy of the detection. This high-precision detection capability enables the device to more accurately evaluate the braking performance of brake pads, providing strong data support for the optimization and improvement of automotive braking systems.

[0033] (2) This invention is equipped with an intelligent control system that can monitor and analyze the brake disc's operating data in real time. Through advanced data processing algorithms, the intelligent control system can automatically adjust test parameters to ensure the accuracy and stability of the testing process. Simultaneously, the system can also feed the analysis results back to the operating terminal in real time, allowing operators to understand the test progress and results at any time. This highly automated and intelligent control method not only reduces the workload of operators and improves testing efficiency but also reduces the impact of human factors on test results, ensuring the objectivity and accuracy of the test results.

[0034] (3) The human-machine interface of this device is designed to be very intuitive and user-friendly, using a touch screen or computer software as the operating interface. This design allows users to easily input test commands, view test data, and set test parameters, enabling them to operate the device without complex training. At the same time, the operating interface provides rich test data and result display methods, such as real-time graphs and data reports, facilitating in-depth analysis and understanding of the test results. This convenient operation and excellent user experience make this device widely applicable in the field of automotive braking performance testing.

[0035] (4) The device is equipped with comprehensive safety protection units, including an emergency stop button and an overload protection system. In an emergency, the operator can quickly press the emergency stop button to cut off the power supply to the device, preventing equipment overload and personal injury. At the same time, the overload protection system can monitor the operating status of the device in real time, and will automatically cut off the power supply once an overload or other abnormal situation is detected, protecting the equipment from damage. This comprehensive safety protection measure ensures the safe conduct of the testing process and provides a solid guarantee for the operators and equipment. Attached Figure Description

[0036] Figure 1 This is a front view of the overall structure of the present invention;

[0037] Figure 2 This is a three-dimensional view of the structure of the present invention;

[0038] Figure 3 This is a three-dimensional view of the data acquisition box 361 and the high-precision sensor of the present invention;

[0039] Figure 4 This is a schematic view of the component status of the brake testing system of the present invention;

[0040] Figure 5 This is a schematic diagram of the control system flow of the present invention;

[0041] In the diagram: 21. Automotive brake test bench; 22. Motor base; 23. Motor; 24. Bearing support seat; 25. Rotary shaft; 26. Brake disc; 27. Brake test system assembly; 271. Brake caliper; 272. Hydraulic transmission piston; 273. Brake friction pad; 274. Hydraulic transmission system; 31. Support frame; 32. Electric push rod; 33. Sliding block; 34. Electromagnetic slide rail; 35. Electromagnetic slider; 361. Data acquisition box; 362. Force sensor; 363. Displacement sensor; 364. Temperature sensor; 365. Speed ​​sensor; 41. Intelligent control system. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0044] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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 mechanical connection or an electrical connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] A preferred embodiment of the braking performance testing device for automobile brakes provided by the present invention is as follows: Figure 1-5 As shown: A braking performance testing device for automobile brakes, comprising:

[0046] The vehicle braking test bench 21, as the core platform of the entire testing device, 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.

[0047] The motor base 22, which serves as the support structure for the motor 23, is made of high-strength material to ensure the stability and vibration control of the motor 23 during operation.

[0048] The bearing support 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.

[0049] Motor 23, as a power source, is fixedly installed on motor base 22. Its output end is fixedly connected to rotating shaft 25 through coupling, providing stable rotational power to brake disc 26.

[0050] 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 rotatable connection, ensuring that the brake disc 26 can rotate with the operation of the motor 23.

[0051] The brake disc 26, as a key component of the braking system, is fixed at the end of the rotating shaft 25 and works in conjunction with the brake test system component 27 to simulate the friction and wear conditions during actual braking.

[0052] Brake test system component 27 includes a brake caliper 271, a hydraulically driven piston 272, a brake friction pad 273, and a hydraulic transmission system 274 mounted via a connecting bracket 28, for applying braking force to the brake disc 26 and measuring various performance parameters during the braking process;

[0053] The intelligent control system 41 includes an intelligent control unit, a human-machine interface, and a safety protection unit. It is responsible for monitoring and analyzing the operating data of the brake disc 26 in real time, and feeding the analysis results back to the operation terminal through data transmission, so as to realize the automation and intelligent control of the test process.

[0054] The intelligent control unit, employing advanced microprocessors and algorithms, can automatically adjust braking system parameters, such as braking force and braking time, according to preset test programs to optimize braking performance, and further process and analyze the collected data in real time.

[0055] The human-computer interaction interface, using a touch screen or computer software, provides an intuitive and user-friendly interface, making 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;

[0056] The safety protection unit, including an emergency stop button and an overload protection system, is used to automatically cut off the power supply in emergency situations to prevent equipment overload and personal injury, ensuring 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.

[0057] The height adjustment module consists of a support frame 31 and an electric push rod 32. It can adjust the height of the brake disc 26 according to different vehicle models to ensure precise docking of the brake disc 26 with 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 and lowering of the data acquisition and analysis system.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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:

[0063] 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;

[0064] 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.

[0065] 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.

[0066] 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.

[0067] The communication interface 366 is located at the bottom of the data acquisition box 361. It 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.

[0068] The data processing unit uses a high-performance microprocessor and algorithms 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.

[0069] The storage unit, using a large-capacity hard drive or flash memory, is used to store test data, test results, and inspection reports, allowing users to view and analyze historical data at any time, providing data support for the optimization and improvement of the braking system.

[0070] During use, firstly, in the equipment preparation and initialization phase, the operator adjusts the height lifting module according to the vehicle model under test to ensure precise alignment of the brake disc with the braking systems of different models. Simultaneously, the intelligent control system 41 performs initialization settings, including inputting and calibrating test parameters. Next, the device enters the braking process simulation phase. The motor 23 drives the brake disc 26 to rotate via a shaft, simulating the rotational state of a car during actual braking. At the same time, the brake testing system component 27 applies braking force to the brake disc to simulate friction and wear during actual braking. During braking, the data acquisition and analysis system uses high-precision sensors to measure various key parameters in real time, such as the magnitude of braking force, changes in wear, temperature rise, and braking time. This data is transmitted in real time to the data processing unit for analysis and processing to evaluate the braking performance of the brake pads. Furthermore, the system continuously monitors the actual friction coefficient of the friction surface and compares it with a preset threshold. Once the detected friction coefficient falls below the set threshold, the system automatically triggers an alarm signal, indicating a decline in braking performance and the need to replace the friction pads promptly. Simultaneously, the system records the wear amount during each braking process, calculates and predicts the remaining life of the friction pads through cumulative calculations, and performs condition monitoring and fault diagnosis. After the test, the intelligent control system feeds back the analysis results to the operating terminal, displaying real-time data and results during the test. The storage unit also stores test data, test results, and inspection reports, allowing users to easily view and analyze historical data at any time. Finally, in an emergency, the safety protection unit automatically cuts off the power supply to prevent equipment overload and personnel injury, ensuring the safe conduct of the test.

[0071] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0072] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention 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 substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

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). It also includes a data acquisition and analysis system, comprising 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), responsible for real-time acquisition of various parameters during the braking process, 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), 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; the front end of the data acquisition box (361) is provided with The high-precision sensor is capable of measuring key parameters of the brake in real time, such as the friction coefficient, wear, temperature, and braking time during the braking process. The high-precision sensor includes a force sensor (362) for measuring the magnitude of the braking force during the braking process; a displacement sensor (363) for measuring the displacement change between the brake disc (26) and the brake friction pad (273) to calculate the wear; a temperature sensor (364) for monitoring the temperature change during the braking process to prevent the braking performance from deteriorating due to excessive temperature; and a speed sensor (365) for measuring the rotational speed of the brake disc (26) to calculate the braking time.

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: 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.

4. The braking performance testing device for automobile brakes according to claim 1, characterized in that: The data processing unit uses a high-performance microprocessor and algorithms 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.

5. The braking performance testing device for automobile brakes according to claim 1, 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.

6. The 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.

Images