Intelligent disc brake braking system for new energy vehicle and control method

Abstract

According to the intelligent disc brake braking system of the new energy vehicle, the road surface condition is monitored in real time by integrating the road surface flatness sensor, the speed sensor and the acceleration sensor. The data processing module receives and processes the data, generates appropriate braking force feedback suggestions, and transmits information to a driver through a light or sound prompt system. The brake pedal feedback force adjusting module adjusts the hydraulic pressure and the braking force according to the calculation result, it is ensured that the braking force is rapidly and accurately applied under the emergency situation, and the driving safety and the driving comfort are improved. The system is suitable for various road conditions, the feedback force of the brake pedal can be automatically adjusted, the fatigue of a driver is relieved, and the control stability and trafficability of a vehicle are improved.

Description

Technical Field

[0001] The present invention specifically relates to an intelligent disc brake system and a control method for new energy vehicles. Background Art

[0002] With the rapid development of new energy vehicles, vehicle safety and driving comfort have become key technical issues. Traditional braking systems have the following technical problems when facing complex road conditions: Traditional braking systems cannot monitor the flatness of the road surface in real time. When driving on uneven roads, it is difficult for drivers to accurately perceive the road conditions, which may lead to improper braking and affect driving safety. For example, when driving at high speed and suddenly encountering a pothole, the driver may not be able to react in time, resulting in loss of vehicle control or increased braking distance.

[0003] The brake pedal feedback force of existing braking systems is fixed and cannot be dynamically adjusted according to road conditions and vehicle driving status. This not only affects driving comfort, but may also cause the driver to be unable to apply braking force quickly and accurately in an emergency. For example, on a slippery road, the fixed feedback force may cause the driver to over-brake, increasing the risk of the vehicle skidding.

[0004] Traditional systems lack effective driving prompts. Drivers may be distracted and unable to perceive road surface changes in a timely manner under complex road conditions, resulting in delayed or improper braking operations. For example, at night or in bad weather conditions, it may be difficult for drivers to perceive road conditions through vision, and more intuitive prompts are needed to assist driving.

[0005] Traditional braking systems have poor adaptability under different road conditions and cannot be adjusted according to different road conditions and driving needs. This not only affects the vehicle's passability, but may also cause driving fatigue. For example, on mountainous roads or bumpy roads, fixed braking strategies may cause the vehicle to bump frequently, affecting driving comfort. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide an intelligent disc brake system and control method for new energy vehicles in view of the deficiencies of the above-mentioned prior art. By integrating multiple sensors and advanced data processing technologies, real-time monitoring of road surface flatness can be achieved, and the feedback force of the brake pedal can be intelligently adjusted according to the monitoring results. At the same time, the driver can be prompted by lights or sounds, thereby significantly improving driving safety and driving comfort.

[0007] To achieve the above object, the present invention provides the following technical solutions: The intelligent disc brake system for new energy vehicles is characterized by comprising: A sensor module, wherein the sensor module includes a road surface roughness sensor, a speed sensor, and an acceleration sensor; A data processing module, the data processing module includes a data receiving unit, a data preprocessing unit, a feature extraction unit, a fuzzy logic analysis unit, a brake pedal feedback force calculation unit, and a control signal generation unit, which transmit signals in sequence through a data line or a wireless communication method, and the road surface roughness sensor, the speed sensor, and the acceleration sensor transmit data to the data receiving unit through a data line or a wireless communication method respectively; A prompt module, wherein the prompt module includes a light prompt system or a sound prompt system, and the data processing module transmits the control signal to the light prompt system or the sound prompt system via a data line or wireless communication; The brake pedal feedback force adjustment module is connected to the data processing module, and the brake pedal feedback force adjustment module includes a hydraulic pressure adjustment device, a wire-controlled brake actuator, and a disc brake system.

[0008] The solution can monitor the flatness of the road in real time and warn of uneven roads in advance, so that the driver has enough time to react and reduce traffic accidents caused by uneven roads. Dynamically adjust the brake pedal feedback force to ensure that in an emergency, the driver can quickly and accurately apply braking force, shorten the braking distance, and improve the active safety of the vehicle. Automatically adjust the brake pedal feedback force according to the road conditions to reduce the driver's foot fatigue on uneven roads and improve driving comfort. It is suitable for various road conditions, including highways, urban roads, rural roads and potholes, to improve the vehicle's passability and adaptability. Provide drivers with intuitive and accurate road condition information and braking suggestions to reduce the psychological burden and operating pressure during driving, especially under long-term driving or complex road conditions, effectively reduce driving fatigue and improve driving safety.

[0009] The above scheme can be further configured as follows: the road surface flatness sensor is a laser sensor or a camera. When the road surface flatness sensor is a laser sensor, it is installed in the front bumper or front grille area of ​​the vehicle, and the installation height of the road surface flatness sensor is 10cm to 20cm above the ground clearance of the vehicle chassis; when the road surface flatness sensor is a camera, it is installed behind the front windshield of the vehicle, close to the position of the interior rearview mirror; the speed sensor is a Hall effect sensor, installed on the wheel hub or the vehicle drive shaft; the acceleration sensor is a piezoelectric acceleration sensor or a capacitive acceleration sensor, installed in the middle of the vehicle chassis.

[0010] (i) The laser sensor can accurately measure the tiny undulations and unevenness of the road surface by emitting laser beams and receiving reflected signals. Its high precision and fast response characteristics make it suitable for real-time monitoring of road conditions, especially when driving at high speeds. It can warn of potholes, cracks and other uneven conditions on the road surface in advance, providing drivers with sufficient reaction time to improve driving safety. The installation position of the laser sensor ensures that the sensor can cover the road surface within a certain range in front of the vehicle, while avoiding being directly hit by splashing mud or stones, ensuring the stability and durability of the sensor. (ii) The camera captures road images and uses image processing algorithms to extract road surface flatness-related features. Compared with laser sensors, cameras can provide more intuitive road image information, help identify visual information such as road markings and obstacles, and assist drivers in making more comprehensive road condition judgments. In addition, the camera can still work effectively under complex lighting conditions (such as tunnels and shadow areas), enhancing the environmental adaptability of the system. Installed behind the front windshield of the vehicle, close to the rearview mirror inside the vehicle. This position enables the camera to clearly capture the image of the road ahead with the help of the transparency of the vehicle's front windshield, while avoiding the obstruction of components such as wipers and rearview mirrors, ensuring a wide field of view. (iii) The Hall effect sensor is installed on the wheel hub or the vehicle drive shaft, and can measure the vehicle's driving speed in real time and accurately. Speed ​​data is one of the key input parameters of the braking system. By accurately measuring the speed, the system can calculate the required braking force to ensure smooth and safe braking at different speeds. In addition, the speed data is combined with the road surface flatness data to evaluate the dynamic response of the vehicle on uneven roads and further optimize the feedback force adjustment strategy of the brake pedal. (iv) The acceleration sensor is installed in the middle of the vehicle chassis to detect the longitudinal, lateral and vertical acceleration of the vehicle during driving. These acceleration data reflect the dynamic behavior of the vehicle under different road conditions, such as bumps, rolls, pitches, etc. By analyzing the acceleration data, the system can more accurately evaluate the flatness of the road and the stability of the vehicle, thereby dynamically adjusting the feedback force of the brake pedal to improve driving comfort and vehicle handling stability. Piezoelectric and capacitive acceleration sensors can provide reliable acceleration measurement data and support precise control of the system due to their high sensitivity, high precision and good linearity. The above scheme can be further configured as follows: the light prompt system includes an indicator light control unit and an indicator light, the indicator light is installed in the instrument panel area of ​​the vehicle cockpit, the input end of the indicator light control unit is connected to the data processing module, and the output end of the indicator light control unit is connected to the indicator light.

[0011] It should be noted that the colors of the indicator light include green light, yellow light, and red light. The green light indicates that the road surface is credentialed and the brake pedal can be stepped on normally. The yellow light indicates that the road surface is slightly uneven and it is recommended to reduce the pedal force appropriately. The red light indicates that the road surface is seriously uneven or there is an emergency braking demand and the pedal force needs to be increased quickly. The indicator light control unit is responsible for receiving the control signals sent by the data processing module and accurately controlling the display status of the indicator light according to these signals. It ensures that the indicator light can reflect the road surface flatness information in a timely and accurate manner, providing the driver with intuitive visual prompts, helping the driver to make reasonable driving decisions and enhancing driving safety. The indicator light is installed in the instrument panel area of ​​the vehicle cockpit. The indicator light conveys the road surface flatness status and corresponding brake pedal operation suggestions to the driver through lights of different colors (green, yellow, and red). This intuitive visual prompt can quickly attract the driver's attention within the driver's field of vision without the driver having to distract his attention to view other complex instruments or display screens, thereby improving driving concentration and safety.

[0012] The above scheme can be further configured as follows: the sound prompt system includes a sound signal generating unit and a speaker, the input end of the sound signal generating unit is connected to the data processing module, the output end of the sound signal generating unit is connected to the speaker, and the speaker is installed in the main driving area of ​​the vehicle cockpit.

[0013] It should be noted that the speaker can emit low-pitched, medium-pitched and high-pitched sounds, wherein the low-pitched sound is a slow rhythm, indicating that the road surface is flat and can be driven normally. The medium-pitched sound is a medium rhythm, indicating that the road surface is slightly uneven and attention should be paid to driving. The high-pitched sound is a fast rhythm, indicating that the road surface is seriously uneven or there is an emergency, and immediate measures should be taken. The sound signal generation unit is responsible for receiving the control signals sent by the data processing module and generating corresponding sound signals according to these signals. It ensures that the speaker can issue sound prompts in a timely and accurate manner, providing the driver with intuitive auditory information, helping the driver to quickly perceive the road surface conditions without distracting visual attention, and enhancing driving safety. Installed in the main driving area of ​​the vehicle cockpit, the speaker conveys the road surface flatness conditions and corresponding driving suggestions to the driver by emitting sound signals of different tones and rhythms. This auditory prompt can quickly attract the attention of the driver within the hearing range, especially when the driver's line of sight cannot pay attention to the dashboard in time, providing important auxiliary information and improving driving concentration and safety.

[0014] The above scheme can be further configured as follows: the hydraulic pressure adjustment device includes a hydraulic pump connected to a data processing module, a high-pressure accumulator connected to the hydraulic pump, and a pressure sensor; the pressure sensor is connected to the data processing module; the wire-controlled brake actuator includes a brake pedal displacement sensor, a force sensor, and an electronic hydraulic brake system connected to the data processing module; the disc brake system includes a brake disc, a brake caliper, and a brake pedal; the brake disc is mounted on a wheel hub and rotates synchronously with the wheel; the brake caliper is mounted on the brake disc, and the brake caliper is connected to the electronic hydraulic brake system; the brake pedal is connected to the force sensor and the displacement sensor.

[0015] The data processing module generates a control signal based on the calculation results and sends it to the hydraulic pressure adjustment device. The hydraulic pump adjusts the hydraulic pressure according to the control signal to drive the high-pressure accumulator and the brake system. The pressure sensor monitors the actual pressure in the hydraulic system and feeds the data back to the data processing module to achieve closed-loop control. The data processing module generates a control signal based on the calculation results and sends it to the wire-controlled brake actuator. The brake pedal displacement sensor and force sensor monitor the displacement and force applied by the driver on the brake pedal and transmit the data to the data processing module. The electronic hydraulic brake system controls the brake caliper according to the control signal to adjust the clamping force of the brake disc. The brake caliper clamps the brake disc according to the control signal of the electronic hydraulic brake system, generates braking force, and slows down or stops the wheel. The brake disc rotates synchronously with the wheel to ensure that the wheel can be quickly slowed down or stopped during braking.

[0016] The control method of the intelligent disc brake system for new energy vehicles is characterized by comprising the following steps: Collecting road surface roughness data, vehicle speed data and vehicle acceleration data during vehicle driving through a sensor module, wherein the sensor module includes a road surface roughness sensor, a speed sensor and an acceleration sensor; The data processing module receives the data collected by the sensor module, performs pre-processing, feature extraction and fuzzy logic analysis on the data, evaluates the road surface smoothness level, and calculates appropriate brake pedal feedback force adjustment suggestions based on the vehicle's current speed and acceleration information; The prompt module prompts the driver of the road surface flatness and the recommended brake pedal force adjustment direction through a light prompt system or a sound prompt system according to the analysis result of the data processing module; The brake pedal feedback force adjustment module adjusts the feedback force of the brake pedal according to the calculation results of the data processing module, so that the feedback force of the brake pedal matches the road condition and the vehicle driving state, helping the driver to perceive the braking demand more accurately. The brake pedal feedback force adjustment module includes a hydraulic pressure adjustment device, a wire-controlled brake actuator and a disc brake system.

[0017] The above scheme can be further configured as follows: the preprocessing of the data processing module includes filtering the collected vibration data to remove noise interference, and normalizing the data to make the data collected by different sensors comparable.

[0018] The above scheme may be further configured as follows: the feature extraction of the data processing module includes extracting characteristic parameters of road surface smoothness, and the characteristic parameters include vibration peak value and vibration frequency distribution.

[0019] The above scheme can be further set as follows: the fuzzy logic analysis of the data processing module includes designing a fuzzy logic system to take the extracted characteristic parameters as input variables, defining fuzzy sets and membership functions to describe the relationship between the input variables and the road surface smoothness, and reasoning according to fuzzy rules to obtain an evaluation result of the road surface smoothness.

[0020] The above scheme can be further configured as follows: when the data processing module calculates the brake pedal feedback force adjustment recommendation, an optimization algorithm based on a vehicle dynamics model and a machine learning algorithm are adopted. The optimization algorithm based on a vehicle dynamics model takes into account factors including vehicle mass, tire characteristics, and road friction coefficient. The machine learning algorithm is trained on experimental data to establish a mapping relationship between road surface flatness and brake pedal feedback force.

[0021] This control method aims to achieve real-time monitoring of the road surface smoothness during the driving of new energy vehicles by integrating multiple sensors and advanced data processing technologies, and intelligently adjust the feedback force of the brake pedal according to the monitoring results, while prompting the driver through lights or sounds to improve driving safety and driving comfort.

[0022] The present invention is further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the process of the present invention. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Embodiment 1, an intelligent disc brake system for new energy vehicles, comprising: The sensor module includes a road surface roughness sensor, a speed sensor and an acceleration sensor; the road surface roughness sensor is a laser sensor installed in the front bumper or front grille area of ​​the vehicle, and the installation height of the road surface roughness sensor is 10cm to 20cm above the ground clearance of the vehicle chassis; the speed sensor is a Hall effect sensor installed on the wheel hub or the vehicle drive shaft; the acceleration sensor is a piezoelectric acceleration sensor installed in the middle of the vehicle chassis.

[0026] The data processing module includes a data receiving unit, a data preprocessing unit, a feature extraction unit, a fuzzy logic analysis unit, a brake pedal feedback force calculation unit, and a control signal generation unit, which transmit signals in sequence via data lines or wireless communication. The road surface roughness sensor, speed sensor, and acceleration sensor transmit data to the data receiving unit via data lines or wireless communication.

[0027] The prompt module includes a light prompt system, and the data processing module transmits the control signal to the light prompt system via a data line or wireless communication.

[0028] The light prompt system includes an indicator light control unit and an indicator light. The indicator light is installed in the instrument panel area of ​​the vehicle cockpit. The input end of the indicator light control unit is connected to the data processing module, and the output end of the indicator light control unit is connected to the indicator light. The colors of the indicator light include green light, yellow light, and red light. The green light indicates that the road surface is credible and the brake pedal can be stepped on normally. The yellow light indicates that the road surface is slightly uneven and it is recommended to reduce the pedal force appropriately. The red light indicates that the road surface is seriously uneven or there is an emergency braking need, and the pedal force needs to be increased quickly.

[0029] The brake pedal feedback force adjustment module is connected to the data processing module. The brake pedal feedback force adjustment module includes a hydraulic pressure adjustment device, a wire-controlled brake actuator, and a disc brake system.

[0030] The hydraulic pressure regulating device comprises a hydraulic pump connected to the data processing module, a high-pressure accumulator connected to the hydraulic pump, and a pressure sensor, and the pressure sensor is connected to the data processing module.

[0031] The brake-by-wire actuator includes a brake pedal displacement sensor, a force sensor, and an electronic hydraulic brake system connected to a data processing module.

[0032] The disc brake system includes a brake disc, a brake caliper, and a brake pedal. The brake disc is mounted on the wheel hub and rotates synchronously with the wheel. The brake caliper is mounted on the brake disc and connected to the electronic hydraulic brake system. The brake pedal is connected to the force sensor and the displacement sensor.

[0033] Embodiment 1 discloses an intelligent disc brake system for new energy vehicles. The system integrates multiple sensors and advanced data processing technology to achieve real-time monitoring of road surface flatness, and intelligently adjusts the feedback force of the brake pedal according to the monitoring results, and prompts the driver through lights to improve driving safety and driving comfort. Specifically, the system includes a sensor module (road surface flatness sensor, speed sensor and acceleration sensor), wherein the road surface flatness sensor is a laser sensor, which is installed in the front bumper or front grille area of ​​the vehicle, and the height is 10cm to 20cm above the ground clearance of the vehicle chassis; the speed sensor is a Hall effect sensor, which is installed on the wheel hub or the vehicle drive shaft; the acceleration sensor is a piezoelectric acceleration sensor, which is installed in the middle of the vehicle chassis. The data processing module includes a data receiving unit, a data preprocessing unit, a feature extraction unit, a fuzzy logic analysis unit, a brake pedal feedback force calculation unit and a control signal generation unit, and each unit transmits signals in turn through a data line or wireless communication. The prompt module is a lighting prompt system, including an indicator light control unit and an indicator light installed in the dashboard area of ​​the vehicle cockpit. The indicator light colors include green, yellow and red, which respectively indicate flat road surface, slightly uneven road surface, severely uneven road surface or emergency braking needs. The brake pedal feedback force adjustment module includes a hydraulic pressure adjustment device (hydraulic pump, high-pressure accumulator, pressure sensor), a wire-controlled brake actuator (brake pedal displacement sensor, force sensor, electronic hydraulic brake system) and a disc brake system (brake disc, brake caliper, brake pedal). Each component works together to adjust the brake pedal feedback force according to the calculation results of the data processing module, so that the brake pedal feedback force matches the road surface condition and the vehicle driving state, helping the driver to perceive the braking needs more accurately.

[0034] Embodiment 2: An intelligent disc brake system for new energy vehicles, comprising: The sensor module includes a road surface roughness sensor, a speed sensor and an acceleration sensor; the road surface roughness sensor is a camera installed behind the front windshield of the vehicle, close to the rearview mirror inside the vehicle; the speed sensor is a Hall effect sensor installed on the wheel hub or the vehicle drive shaft; the acceleration sensor is a capacitive acceleration sensor installed in the middle of the vehicle chassis.

[0035] The data processing module includes a data receiving unit, a data preprocessing unit, a feature extraction unit, a fuzzy logic analysis unit, a brake pedal feedback force calculation unit, and a control signal generation unit, which transmit signals in sequence via data lines or wireless communication. The road surface roughness sensor, speed sensor, and acceleration sensor transmit data to the data receiving unit via data lines or wireless communication.

[0036] The prompt module includes a sound signal generating unit and a speaker. The input end of the sound signal generating unit is connected to the data processing module, and the output end of the sound signal generating unit is connected to the speaker. The speaker is installed in the main driving area of ​​the vehicle cockpit. The speaker can emit low-pitched, medium-pitched, and high-pitched sounds. The low-pitched sound is a slow rhythm, indicating that the road surface is flat and can be driven normally. The medium-pitched sound is a medium rhythm, indicating that the road surface is slightly uneven and driving needs to be careful. The high-pitched sound is a fast rhythm, indicating that the road surface is seriously uneven or there is an emergency, and immediate measures need to be taken.

[0037] The brake pedal feedback force adjustment module is connected to the data processing module. The brake pedal feedback force adjustment module includes a hydraulic pressure adjustment device, a wire-controlled brake actuator, and a disc brake system.

[0038] The hydraulic pressure regulating device comprises a hydraulic pump connected to the data processing module, a high-pressure accumulator connected to the hydraulic pump, and a pressure sensor, and the pressure sensor is connected to the data processing module.

[0039] The brake-by-wire actuator includes a brake pedal displacement sensor, a force sensor, and an electronic hydraulic brake system connected to a data processing module.

[0040] The disc brake system includes a brake disc, a brake caliper, and a brake pedal. The brake disc is mounted on the wheel hub and rotates synchronously with the wheel. The brake caliper is mounted on the brake disc and connected to the electronic hydraulic brake system. The brake pedal is connected to the force sensor and the displacement sensor.

[0041] Embodiment 2 discloses an intelligent disc brake system for new energy vehicles, which uses a camera as a road surface flatness sensor, which is installed behind the front windshield of the vehicle, near the position of the rearview mirror inside the vehicle, to capture image information of the road ahead. The speed sensor adopts a Hall effect sensor, which is installed on the wheel hub or the vehicle drive shaft to measure the driving speed of the vehicle. The acceleration sensor is a capacitive acceleration sensor, which is installed in the middle of the vehicle chassis to detect the acceleration change of the vehicle. The data processing module is composed of a data receiving unit, a data preprocessing unit, a feature extraction unit, a fuzzy logic analysis unit, a brake pedal feedback force calculation unit and a control signal generation unit. Each unit transmits signals through a data line or wireless communication to process data from the sensor. The prompt module is composed of a sound signal generation unit and a speaker. The speaker is installed in the main driving area of ​​the vehicle cockpit and can emit sound signals of different tones and rhythms. The low-pitched slow rhythm indicates that the road surface is flat, the medium-pitched medium rhythm indicates slight unevenness, and the high-pitched fast rhythm indicates severe unevenness or emergency situations, thereby providing real-time road condition feedback to the driver. The brake pedal feedback force adjustment module is connected to the data processing module, and includes a hydraulic pressure adjustment device, a wire-controlled brake actuator and a disc brake system. The hydraulic pressure adjustment device is composed of a hydraulic pump, a high-pressure accumulator and a pressure sensor. The wire-controlled brake actuator includes a brake pedal displacement sensor, a force sensor and an electronic hydraulic brake system. The disc brake system is composed of a brake disc, a brake caliper and a brake pedal. The brake disc is installed on the wheel hub and rotates synchronously with the wheel. The brake caliper is connected to the electronic hydraulic brake system, and the brake pedal is connected to the force sensor and the displacement sensor. The entire module adjusts the feedback force of the brake pedal according to the instructions of the data processing module to ensure that the braking effect is adapted to the road conditions and the vehicle's driving status, thereby improving driving safety and comfort.

[0042] Embodiment 3: A control method for an intelligent disc brake system for a new energy vehicle, characterized in that it comprises the following steps: The sensor module collects the road surface roughness data, vehicle speed data and vehicle acceleration data during the vehicle driving process, wherein the sensor module includes a road surface roughness sensor, a speed sensor and an acceleration sensor; The data processing module receives the data collected by the sensor module, performs preprocessing, feature extraction and fuzzy logic analysis on the data, evaluates the road surface smoothness level, and calculates appropriate brake pedal feedback force adjustment suggestions based on the vehicle's current speed and acceleration information; Preprocessing includes filtering the collected vibration data to remove noise interference and normalizing the data to make the data collected by different sensors comparable.

[0043] Feature extraction includes extracting characteristic parameters of road surface smoothness, and the characteristic parameters include vibration peak value and vibration frequency distribution.

[0044] Fuzzy logic analysis includes designing a fuzzy logic system to take the extracted characteristic parameters as input variables, defining fuzzy sets and membership functions to describe the relationship between input variables and road surface roughness, and reasoning based on fuzzy rules to obtain the evaluation results of road surface roughness.

[0045] When the data processing module calculates the brake pedal feedback force adjustment recommendation, it adopts the optimization algorithm based on the vehicle dynamics model and the machine learning algorithm. The optimization algorithm based on the vehicle dynamics model considers factors including vehicle mass, tire characteristics, and road friction coefficient. The machine learning algorithm trains the experimental data to establish a mapping relationship between road surface flatness and brake pedal feedback force.

[0046] The prompt module prompts the driver of the road surface flatness and the recommended brake pedal force adjustment direction through a light prompt system or a sound prompt system according to the analysis result of the data processing module; The brake pedal feedback force adjustment module adjusts the feedback force of the brake pedal according to the calculation results of the data processing module, so that the feedback force of the brake pedal matches the road condition and the vehicle driving state, helping the driver to perceive the braking demand more accurately. The brake pedal feedback force adjustment module includes a hydraulic pressure adjustment device, a wire-controlled brake actuator and a disc brake system.

[0047] This control method aims to achieve real-time monitoring of the road surface smoothness during the driving of new energy vehicles by integrating multiple sensors and advanced data processing technologies, and intelligently adjust the feedback force of the brake pedal according to the monitoring results, while prompting the driver through lights or sounds to improve driving safety and driving comfort.

Claims

1. An intelligent disc brake system for new energy vehicles, characterized in that: include: A sensor module, wherein the sensor module includes a road surface roughness sensor, a speed sensor, and an acceleration sensor; A data processing module, the data processing module includes a data receiving unit, a data preprocessing unit, a feature extraction unit, a fuzzy logic analysis unit, a brake pedal feedback force calculation unit, and a control signal generation unit, which transmit signals in sequence through a data line or a wireless communication method, and the road surface roughness sensor, the speed sensor, and the acceleration sensor transmit data to the data receiving unit through a data line or a wireless communication method respectively; A prompt module, wherein the prompt module includes a light prompt system or a sound prompt system, and the data processing module transmits the control signal to the light prompt system or the sound prompt system via a data line or wireless communication; The brake pedal feedback force adjustment module is connected to the data processing module, and the brake pedal feedback force adjustment module includes a hydraulic pressure adjustment device, a wire-controlled brake actuator, and a disc brake system.

2. The intelligent disc brake system for new energy vehicles according to claim 1, characterized in that: The road surface roughness sensor is a laser sensor or a camera. When the road surface roughness sensor is a laser sensor, it is installed in the front bumper or front grille area of ​​the vehicle, and the installation height of the road surface roughness sensor is 10cm to 20cm above the ground clearance of the vehicle chassis; when the road surface roughness sensor is a camera, it is installed behind the front windshield of the vehicle, close to the position of the interior rearview mirror; the speed sensor is a Hall effect sensor, which is installed on the wheel hub or the vehicle drive shaft; the acceleration sensor is a piezoelectric acceleration sensor or a capacitive acceleration sensor, which is installed in the middle of the vehicle chassis.

3. The intelligent disc brake system for new energy vehicles according to claim 1 is characterized in that: The light prompt system includes an indicator light control unit and an indicator light. The indicator light is installed in the instrument panel area of ​​the vehicle cockpit. The input end of the indicator light control unit is connected to the data processing module, and the output end of the indicator light control unit is connected to the indicator light.

4. The intelligent disc brake system for new energy vehicles according to claim 1 is characterized in that: The sound prompt system includes a sound signal generating unit and a speaker. The input end of the sound signal generating unit is connected to the data processing module, and the output end of the sound signal generating unit is connected to the speaker. The speaker is installed in the main driving area of ​​the vehicle cockpit.

5. The intelligent disc brake system for new energy vehicles according to claim 1, characterized in that: The hydraulic pressure adjustment device includes a hydraulic pump connected to a data processing module, a high-pressure accumulator connected to the hydraulic pump, and a pressure sensor, the pressure sensor is connected to the data processing module, the wire-controlled brake actuator includes a brake pedal displacement sensor, a force sensor, and an electronic hydraulic brake system connected to the data processing module, the disc brake system includes a brake disc, a brake caliper, and a brake pedal, the brake disc is installed on the wheel hub and rotates synchronously with the wheel, the brake caliper is installed on the brake disc, and the brake caliper is connected to the electronic hydraulic brake system, and the brake pedal is connected to the force sensor and the displacement sensor.

6. A control method for an intelligent disc brake system for a new energy vehicle, characterized in that: The following steps are included: Collecting road surface roughness data, vehicle speed data and vehicle acceleration data during vehicle driving through a sensor module, wherein the sensor module includes a road surface roughness sensor, a speed sensor and an acceleration sensor; The data processing module receives the data collected by the sensor module, performs pre-processing, feature extraction and fuzzy logic analysis on the data, evaluates the road surface smoothness level, and calculates appropriate brake pedal feedback force adjustment suggestions based on the vehicle's current speed and acceleration information; The prompt module prompts the driver of the road surface flatness and the recommended brake pedal force adjustment direction through a light prompt system or a sound prompt system according to the analysis result of the data processing module; The brake pedal feedback force adjustment module adjusts the feedback force of the brake pedal according to the calculation results of the data processing module, so that the feedback force of the brake pedal matches the road condition and the vehicle driving state, helping the driver to perceive the braking demand more accurately. The brake pedal feedback force adjustment module includes a hydraulic pressure adjustment device, a wire-controlled brake actuator and a disc brake system.

7. The control method of the intelligent disc brake system for new energy vehicles according to claim 6, characterized in that: The preprocessing of the data processing module includes filtering the collected vibration data to remove noise interference, and normalizing the data to make the data collected by different sensors comparable.

8. The control method of the intelligent disc brake system for new energy vehicles according to claim 7 is characterized in that: The feature extraction of the data processing module includes extracting characteristic parameters of road surface smoothness, and the characteristic parameters include vibration peak value and vibration frequency distribution.

9. The control method of the intelligent disc brake system for new energy vehicles according to claim 8, characterized in that: The fuzzy logic analysis of the data processing module includes designing a fuzzy logic system to take the extracted characteristic parameters as input variables, defining fuzzy sets and membership functions to describe the relationship between the input variables and the road surface smoothness, and inferring according to fuzzy rules to obtain the evaluation result of the road surface smoothness.

10. The control method of the intelligent disc brake system for new energy vehicles according to claim 9, characterized in that: When the data processing module calculates the brake pedal feedback force adjustment recommendation, it adopts an optimization algorithm based on a vehicle dynamics model and a machine learning algorithm. The optimization algorithm based on a vehicle dynamics model takes into account factors including vehicle mass, tire characteristics, and road friction coefficient. The machine learning algorithm trains experimental data to establish a mapping relationship between road surface flatness and brake pedal feedback force.

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