A kind of automobile brake based on multisensor monitoring

Abstract

The application discloses a kind of automobile brakes based on multi-sensor monitoring, it is related to automobile brake technical field, including: brake caliper, brake disc, brake caliper is fixedly arranged on brake disc, information acquisition module, information processing module are provided on brake disc, brake intervention unit is provided on brake caliper;Brake intervention unit includes: hydraulic piston mechanism, hydraulic piston mechanism is used to automatically adjust brake force clamping brake disc under different emergency;Vehicle motion state can be more accurately obtained by information acquisition module, information processing module, brake intervention unit can automatically adjust brake force by hydraulic piston mechanism, the application of different brake force is realized, effectively avoid the brake risk caused by driver operation not in time or unreasonable, significantly improve the brake safety and stability of vehicle under complex working conditions.

Description

Technical Field

[0001] This invention relates to the field of automotive brake technology, and in particular to an automotive brake based on multi-sensor monitoring. Background Technology

[0002] With the rapid development of the automotive industry, vehicle safety has become a major concern. As a key component ensuring safe vehicle operation, the stability and reliability of automotive brakes are paramount. Traditional automotive brakes rely primarily on driver input to achieve braking, lacking effective monitoring and precise control of the vehicle's real-time movement.

[0003] Most existing automotive braking systems lack sensor monitoring devices, making it impossible to collect real-time data on the vehicle's motion. Without this sensor data, the braking system struggles to comprehensively and accurately perceive the vehicle's driving conditions, relying solely on the driver's experience and judgment to apply the brakes. In complex driving conditions, such as high-speed driving, emergency steering, or poor road conditions, traditional braking systems cannot automatically adjust braking force according to the vehicle's actual motion, easily leading to delayed braking, improper braking force distribution, and other problems. This increases the risk of skidding, fishtailing, or even loss of control, seriously affecting vehicle safety.

[0004] In addition, traditional car brakes mainly rely on the driver to press the brake pedal to apply braking force, lacking an automatic control mechanism.

[0005] Especially when the vehicle is in different emergency situations, it cannot automatically initiate corresponding braking intervention measures based on the real-time monitored vehicle motion status data, making it difficult to provide appropriate braking force at the optimal time. This limits the performance of the braking system and fails to meet the modern automobile's demand for high safety and intelligence. Summary of the Invention

[0006] This invention provides an automotive brake based on multi-sensor monitoring.

[0007] A vehicle brake based on multi-sensor monitoring includes: a brake caliper and a brake disc. The brake caliper is fixedly mounted on the brake disc. The brake disc is provided with an information acquisition module and an information processing module. The brake caliper is provided with a brake intervention unit. The braking intervention unit includes a hydraulic piston mechanism, which is used to automatically adjust the braking force to clamp the brake disc under different emergency conditions; The information acquisition module is used to collect vehicle motion status data and send it to the information processing module; The information processing module is used to process vehicle motion state data to obtain effective feature information data, and then send the effective feature information data to the vehicle driving system. The vehicle driving system generates corresponding control signals based on preset effective feature information data thresholds. These control signals are used to control the braking intervention unit to activate different braking forces. Valid feature information data includes: vehicle speed v, vehicle acceleration a, wheel speed n, and steering wheel angle θ; When v > 60 km / h, |a| > 3 m / s², 10° < |θ| < 15° and wheel speed difference Δn > 10%, the vehicle driving system initiates pre-warning braking. Pre-warning braking: applies 10% of the basic braking force and uses hydraulic braking intervention. When v > 75 km / h, |a| > 3 m / s², 15° < |θ| < 30° and wheel speed difference Δn > 15%, the vehicle driving system initiates active braking. Active braking: linearly increases to 60% braking force, and hydraulic braking intervention is adopted. When v > 95 km / h, |a| > 3 m / s², |θ| > 30° and wheel speed difference Δn > 20%, the vehicle driving system initiates emergency braking. Emergency braking: full pressure output, using hydraulic braking intervention.

[0008] Preferably, the assembly includes: a brake caliper, an information processing module, and a brake disc. A brake intervention unit is provided on the outer wall of the cylinder at the top of the brake caliper. A steering knuckle bracket is provided at the top of the brake disc. Both ends of the steering knuckle bracket are provided with through holes. The caliper body bracket of the brake caliper is provided with two circular through holes at its two ends, respectively. Bolt 1 and Bolt 2 are respectively fixedly installed through the through holes on the steering knuckle bracket and the circular through holes on the caliper body bracket. The bolts are used to fix the brake caliper and the steering knuckle bracket to the brake disc. The information processing module is rotated and fixed to the center of the steering knuckle bracket after passing through the threaded hole in the center of the steering knuckle bracket and the through hole 3 in the center of the brake disc. An information acquisition module is fixedly installed on the side of the steering knuckle bracket.

[0009] Preferably, the information acquisition module includes: a steering angle vehicle speed integrated sensor and an acceleration wheel speed integrated sensor; The steering angle and vehicle speed integrated sensor is used to collect the vehicle's wheel speed n and steering wheel angle θ; The wheel speed acceleration integrated sensor is used to collect vehicle speed v and vehicle acceleration a; The wheel rotation speed n, steering wheel angle θ, vehicle speed v, and vehicle acceleration a collected by the integrated steering angle and vehicle speed sensors and the integrated acceleration and wheel speed sensors are transmitted to the information processing module through the built-in data transceiver.

[0010] Preferably, the information processing module is used to filter and denoise the vehicle motion state data collected by the information acquisition module, extract effective feature information data from the preprocessed data, fuse the extracted feature information data, and transmit the fused data to the vehicle driving system through the CAN communication circuit. The information processing module is used to convert the vehicle motion state data into effective feature information data.

[0011] Preferably, the filtering and noise reduction preprocessing in the information processing module uses hardware RC filtering and software multi-stage filtering; Among the extraction of effective features: The vehicle speed v and vehicle acceleration a are obtained by applying sliding window mean filtering. The wheel speed n and steering wheel angle θ are subjected to Kalman filtering to obtain the state estimate after Kalman filtering.

[0012] Preferably, it includes: bolt three, a base is provided at the bottom of the brake disc, the base is provided with multiple threaded through holes, and multiple bolt three pass through the threaded through holes to fix the brake disc to the vehicle.

[0013] Preferably, the vehicle driving system includes: an information receiving module, an information judging module, a braking signal generating module, and an alarm module; The information receiving module is used to receive valid characteristic information data sent from the CAN communication circuit; The information judgment module is used to determine the range of the valid feature information data received by the information receiving module within a preset threshold, and sends the preset threshold of that range to the braking signal generation module; The braking signal generation module is used to receive the preset threshold sent by the information judgment module and generate a braking signal to be transmitted to the hydraulic piston mechanism.

[0014] Preferably, the vehicle driving system further includes: an alarm module, which receives an alarm signal generated by the braking signal generation module and issues an alarm; When the information judgment module reaches a certain preset threshold, it will trigger the braking signal generation module to generate an alarm signal, and the braking signal generation module will then send the alarm signal to the alarm module.

[0015] Compared with the prior art, the beneficial effects of the present invention are: The information acquisition module is located on the side of the steering knuckle bracket, and the information processing module is fixed through the center of the steering knuckle bracket and the brake disc. This structural design is reasonable and easy to install, which can ensure that each module works stably during vehicle operation and improve the reliability and durability of the entire braking system.

[0016] By incorporating an information acquisition module, including integrated sensors for steering angle and vehicle speed, and integrated sensors for acceleration and wheel speed, the system can accurately and in real-time collect key motion state data such as wheel speed n, steering wheel angle θ, vehicle speed v, and vehicle acceleration a. The collaborative work of these multiple sensors provides the braking system with comprehensive and rich vehicle operating information, enabling it to perceive the vehicle's driving status in real time and providing a reliable data foundation for subsequent braking intervention. Compared to traditional braking systems that lack sensor support, this invention can more accurately acquire vehicle motion state, avoiding braking decision errors caused by missing information.

[0017] Based on preset threshold values ​​for valid characteristic information, the vehicle driving system can automatically determine the vehicle's driving conditions and generate corresponding control signals to control the braking intervention unit. When the vehicle is in different emergency situations, such as pre-warning braking, active braking, and emergency braking, the braking intervention unit can automatically adjust the braking force through a hydraulic piston mechanism to apply different braking forces. This automatic control mechanism requires no direct driver intervention and can quickly and accurately initiate corresponding braking intervention measures at critical moments, making the application of braking force more in line with the actual driving needs of the vehicle. This effectively avoids braking risks caused by untimely or unreasonable driver operation and significantly improves the braking safety and stability of the vehicle under complex conditions. Attached Figure Description

[0018] Figure 1 A three-dimensional structural diagram of an automobile brake based on multi-sensor monitoring according to an embodiment of the present disclosure is shown. Figure 2 An exploded view of a three-dimensional structure of an automobile brake based on multi-sensor monitoring, according to an embodiment of this disclosure; Figure 3 This diagram illustrates a three-dimensional structure of a steering knuckle bracket in an automotive brake based on multi-sensor monitoring, according to an embodiment of this disclosure. Figure 4 This diagram illustrates a three-dimensional structure of a brake caliper in an automotive brake based on multi-sensor monitoring, according to an embodiment of the present disclosure. Figure 5 This diagram illustrates a flowchart of the information module to the braking intervention unit in an automobile brake based on multi-sensor monitoring, according to an embodiment of the present disclosure. Figure 6 This diagram illustrates a complete braking process in an automotive brake based on multi-sensor monitoring, according to an embodiment of the present disclosure.

[0019] The components include: 1. Brake caliper; 101. Circular through hole one; 102. Circular through hole two; 103. Braking intervention unit; 2. Brake disc; 201. Base; 202. Bolt three; 203. Through hole three; 3. Information processing module; 4. Steering knuckle bracket; 401. Bolt one; 402. Bolt two; 5. Steering angle and vehicle speed integrated sensor; 6. Acceleration and wheel speed integrated sensor; 7. Information acquisition module. Detailed Implementation

[0020] Various exemplary embodiments, features, and aspects of this disclosure will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0021] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0022] Furthermore, to better illustrate this disclosure, numerous specific details are set forth in the following detailed description. Those skilled in the art will understand that this disclosure can be practiced without certain specific details. In some instances, methods, means, components, and circuits well known to those skilled in the art have not been described in detail in order to highlight the main points of this disclosure.

[0023] Reference Figures 1-6 As shown, this embodiment of a car brake based on multi-sensor monitoring includes a brake caliper 1, a brake disc 2, an information processing module 3, a steering knuckle bracket 4, an information acquisition module 7, and a brake intervention unit 103.

[0024] Brake caliper 1 is fixedly mounted on brake disc 2. A steering knuckle bracket 4 is mounted on the top of brake disc 2. Both ends of the steering knuckle bracket 4 have through holes. The caliper body bracket of brake caliper 1 has a circular through hole 101 and a circular through hole 102 at its two ends. Bolts 401 and 402 are respectively installed through and fixed between the through holes on the steering knuckle bracket 4 and the circular through holes on the caliper body bracket, thus fixing brake caliper 1 and steering knuckle bracket 4 to brake disc 2. Information processing module 3 passes through a threaded hole in the center of steering knuckle bracket 4 and a through hole 203 in the center of brake disc 2, and is then rotated and fixed to the center of steering knuckle bracket 4. Information acquisition module 7 is fixedly mounted on the side of steering knuckle bracket 4.

[0025] The braking intervention unit 103 is located on the outer wall of the top cylinder of the brake caliper 1 and includes a hydraulic piston mechanism for automatically adjusting the braking force to clamp the brake disc 2 in different emergency situations. The steering angle and vehicle speed integrated sensor 5 in the information acquisition module 7 is used to collect the vehicle's wheel speed n and steering wheel angle θ, and the acceleration and wheel speed integrated sensor 6 is used to collect the vehicle's driving speed v and vehicle acceleration a. The collected data is sent to the information processing module 3 through the built-in data transceiver.

[0026] Information processing module 3 filters and denoises the collected vehicle motion state data, extracting effective feature information data, including: vehicle speed v, vehicle acceleration a, wheel speed n, and steering wheel angle θ. This data is then fused and transmitted to the vehicle driving system via the CAN communication circuit. The vehicle driving system generates corresponding control signals based on preset effective feature information data thresholds, controlling the braking intervention unit 103 to initiate different braking forces, as detailed below: When v > 60 km / h, |a| > 3 m / s², 10° < |θ| < 15° and wheel speed difference Δn > 10%, the warning braking is activated, 10% of the basic braking force is applied, and hydraulic braking intervention is adopted. When v > 75 km / h, |a| > 3 m / s², 15° < |θ| < 30° and wheel speed difference Δn > 15%, active braking is initiated, linearly increasing to 60% braking force, and hydraulic braking intervention is adopted. When v > 95 km / h, |a| > 3 m / s², |θ| > 30° and wheel speed difference Δn > 20%, emergency braking is initiated with full pressure output and hydraulic braking intervention is adopted.

[0027] In some examples, the braking intervention unit 103 controls the magnitude of the braking force by automatically adjusting the amount of brake fluid supplied to the brake caliper 1.

[0028] In some examples, the bottom of the brake disc 2 is provided with a base 201, which has multiple threaded through holes. Multiple bolts 202 pass through the threaded through holes to fix the brake disc 2 to the vehicle. This arrangement makes the connection between the brake disc 2 and the vehicle more stable, able to withstand various forces and vibrations generated during vehicle operation, ensuring the stability of the brake disc 2 in long-term use, avoiding the impact of loose connection on braking performance, and improving the reliability of the entire braking system.

[0029] In some examples, the filtering and denoising preprocessing in information processing module 3 uses hardware RC filtering and software multi-stage filtering. Specifically, vehicle speed *v* and vehicle acceleration *a* are obtained using sliding window mean filtering; wheel speed *n* and steering wheel angle *θ* are obtained using Kalman filtering, yielding Kalman-filtered state estimates. This combination of hardware and software filtering effectively removes noise and interference from sensor-acquired data, improving data accuracy and reliability. This provides more precise data support for subsequent braking decisions, enabling the braking system to more accurately determine the vehicle's driving state and thus make appropriate braking interventions.

[0030] In some examples, the vehicle driving system includes an information receiving module, an information judging module, a braking signal generation module, and an alarm module. The information receiving module receives valid characteristic information data from the CAN communication circuit; the information judging module determines which preset threshold range the received data falls within and sends that preset threshold to the braking signal generation module; the braking signal generation module receives the preset threshold and generates a braking signal to be emitted to the hydraulic piston mechanism; the alarm module receives the alarm signal generated by the braking signal generation module and issues an alarm, triggering the braking signal generation module to generate an alarm signal when the information judging module reaches a certain preset threshold. This modular design clearly defines the functional division of the vehicle driving system, enabling efficient information processing and control signal generation. Simultaneously, the alarm module can alert the driver during braking intervention, reminding them of the vehicle's driving status and further improving driving safety.

[0031] In some examples, the information acquisition module 7 employs a combination of a steering angle and vehicle speed integrated sensor 5 and an acceleration and wheel speed integrated sensor 6. The steering angle and vehicle speed integrated sensor 5 can simultaneously acquire wheel speed n and steering wheel angle θ, while the acceleration and wheel speed integrated sensor 6 can simultaneously acquire vehicle speed v and vehicle acceleration a. Both integrated sensors transmit the acquired data to the information processing module 3 via a built-in data transceiver. This multi-sensor integration design reduces the number of sensors and installation space, lowers system complexity and cost, while enabling real-time and accurate acquisition of key vehicle motion state data. It achieves collaborative work among multiple sensors, providing the braking system with comprehensive and rich vehicle operating information, allowing the braking system to make braking decisions more timely and accurately.

[0032] In some examples, the circular through-hole 101 and circular through-hole 102 on the caliper body bracket of the brake caliper 1 are fixedly connected to the through-hole on the steering knuckle bracket 4 by bolts 401 and 402. This connection method is simple in structure and easy to install, ensuring a stable connection between the brake caliper 1 and the steering knuckle bracket 4. During vehicle operation, it can withstand the huge friction and impact forces generated during braking, ensuring the stable operation of the brake caliper 1. This allows the brake intervention unit 103 to accurately apply braking force, improving the reliability and durability of the braking system.

[0033] Working principle of the invention: When using this type of automotive brake based on multi-sensor monitoring, the system integration and data acquisition preparation are first completed by relying on the structure of each module. The brake caliper 1 is fixed to the brake disc 2 by bolts 401 and 402. The information processing module 3 is fixed through the center of the two. The information acquisition module 7 includes a steering angle and vehicle speed integrated sensor 5 and an acceleration and wheel speed integrated sensor 6. The information acquisition module 7 is installed on the side of the steering knuckle bracket 4 to ensure that each component works stably during vehicle operation.

[0034] After the vehicle starts, the information acquisition module 7 acquires key motion data in real time: the steering angle and vehicle speed integrated sensor 5 collects the wheel speed n and steering wheel angle θ, and the acceleration and wheel speed integrated sensor 6 collects the driving speed v and acceleration a. The data is transmitted to the information processing module 3 through a built-in transceiver. At this stage, the integrated design of the sensors reduces installation space and system complexity.

[0035] Information processing module 3 performs hierarchical filtering on the raw data: first, hardware RC filtering is used to initially remove high-frequency noise, and then software multi-level filtering is used for further optimization—sliding window mean filtering is used to smooth short-term fluctuations in v and a, and Kalman filtering is used to dynamically estimate the state in n and θ, forming effective feature data v, a, n, and θ, which are then sent to the vehicle driving system via the CAN communication circuit. This hardware and software combined filtering strategy ensures the reliability of the data under complex operating conditions.

[0036] After the information receiving module of the vehicle driving system acquires the feature data, the information judgment module determines which range of the received valid feature information data falls within a preset threshold range, and sends the preset threshold of that range to the braking signal generation module.

[0037] Preset thresholds include: early warning, active response, and emergency braking; When the following conditions are met: v > 60 km / h, |a| > 3 m / s², 10° < |θ| < 15°, and wheel speed difference Δn > 10%, the warning braking is triggered. If v > 75 km / h, |a| > 3 m / s², 15° < |θ| < 30° and Δn > 15%, activate active braking; When v > 95 km / h, |a| > 3 m / s², |θ| > 30°, and Δn > 20%, emergency braking is executed. Different threshold values ​​correspond to different control commands output by the braking signal generation module, which drive the hydraulic piston mechanism on brake caliper 1 to adjust the braking force: the pre-warning brake applies 10% of the basic braking force, the active brake linearly increases to 60%, and the emergency brake outputs full pressure, all of which achieve precise deceleration through hydraulic braking intervention.

[0038] During braking intervention, if the alarm trigger condition is met (emergency braking initiated), the braking signal generation module simultaneously sends a signal to the alarm module, alerting the driver to the vehicle's status through sound, lights, and other means. The entire system requires no direct driver intervention; through multi-sensor collaboration and threshold logic, it automatically matches braking force, effectively handling complex conditions such as high-speed steering and wheel slippage, thus improving braking safety and stability.

[0039] When the system requires maintenance, the modular design of the sensors demonstrates its advantages: the brake caliper 1, information processing module 3, etc., can be easily disassembled, and the base 201, secured to the vehicle by bolts 202, ensures the stability of the brake disc 2, facilitating overall maintenance. The integrated layout of the sensors and processing modules reduces maintenance nodes, and the standardized design of the hardware filtering circuit and software algorithm lowers the cost of later debugging and troubleshooting, adapting to the long-term high-intensity operation requirements of the vehicle.

[0040] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A vehicle brake based on multi-sensor monitoring, characterized in that, include: Brake caliper (1), brake disc (2), the brake caliper (1) is fixedly mounted on the brake disc (2), the brake disc (2) is provided with an information acquisition module (7) and an information processing module (3), and the brake caliper (1) is provided with a brake intervention unit (103); The braking intervention unit (103) includes a hydraulic piston mechanism, which is used to automatically adjust the braking force to clamp the brake disc (2) under different emergency situations; The information acquisition module (7) is used to collect vehicle motion status data and send it to the information processing module (3); The information processing module (3) is used to process vehicle motion state data to obtain effective feature information data and send the effective feature information data to the vehicle driving system; The vehicle driving system generates corresponding control signals based on preset effective feature information data thresholds. The control signals are used to control the braking intervention unit (103) to activate different braking forces. Valid feature information data includes: vehicle speed v, vehicle acceleration a, wheel speed n, and steering wheel angle θ; A car brake based on multi-sensor monitoring also includes: a brake caliper (1), an information processing module (3) and a brake disc (2). A brake intervention unit (103) is provided on the outer wall of the top cylinder of the brake caliper (1). A steering knuckle bracket (4) is provided on the top of the brake disc (2). Both ends of the steering knuckle bracket (4) are provided with through holes. The two ends of the caliper body bracket of the brake caliper (1) are respectively provided with a circular through hole one (101) and a circular through hole two (102). Bolt one (401) and bolt two (402) are respectively fixed through the through hole on the steering knuckle bracket (4) and the circular through hole on the caliper body bracket. The bolts are used to fix the brake caliper (1) and the steering knuckle bracket (4) on the brake disc (2). The information processing module (3) passes through the threaded hole in the center of the steering knuckle bracket (4) and the through hole three (203) in the center of the brake disc and is rotated and fixed in the center of the steering knuckle bracket (4). An information acquisition module (7) is fixedly provided on the side of the steering knuckle bracket (4). The information acquisition module (7) includes: a steering angle vehicle speed integrated sensor (5) and an acceleration wheel speed integrated sensor (6); The steering angle and vehicle speed integrated sensor (5) is used to collect the vehicle's wheel speed n and steering wheel angle θ; The wheel speed acceleration integrated sensor (6) is used to collect vehicle speed v and vehicle acceleration a; The wheel speed n, steering wheel angle θ, vehicle speed v, and vehicle acceleration a collected by the steering angle vehicle speed integrated sensor (5) and acceleration wheel speed integrated sensor (6) are sent to the information processing module (3) through the built-in data transceiver.

2. The automotive brake based on multi-sensor monitoring according to claim 1, characterized in that, The information processing module (3) is used to filter and denoise the vehicle motion state data collected by the information acquisition module (7). The information processing module (3) extracts effective feature information data from the preprocessed data, fuses the extracted feature information data, and transmits it to the vehicle driving system through the CAN communication circuit. The information processing module (3) is used to convert the vehicle motion state data into effective feature information data.

3. A vehicle brake based on multi-sensor monitoring according to claim 2, characterized in that, The filtering and noise reduction preprocessing in the information processing module (3) uses hardware RC filtering and software multi-stage filtering; Among the extraction of effective features: The vehicle speed v and vehicle acceleration a are obtained by applying sliding window mean filtering. The wheel speed n and steering wheel angle θ are subjected to Kalman filtering to obtain the state estimate after Kalman filtering.

4. A vehicle brake based on multi-sensor monitoring according to claim 1, characterized in that, include: Bolt 3 (202) is provided at the bottom of the brake disc (2) and a base (201) is provided at the bottom of the base (201). The base (201) is provided with multiple threaded through holes and multiple bolts 3 (202) pass through the threaded through holes to fix the brake disc (2) to the vehicle.

5. A vehicle brake based on multi-sensor monitoring according to claim 2, characterized in that, The vehicle driving system includes: an information receiving module, an information judging module, a braking signal generation module, and an alarm module; The information receiving module is used to receive valid characteristic information data sent from the CAN communication circuit; The information judgment module is used to determine the range of the valid feature information data received by the information receiving module within a preset threshold, and sends the preset threshold of that range to the braking signal generation module; The braking signal generation module is used to receive the preset threshold sent by the information judgment module and generate a braking signal to be transmitted to the hydraulic piston mechanism.

6. A vehicle brake based on multi-sensor monitoring according to claim 5, characterized in that, The vehicle driving system also includes: an alarm module, which receives alarm signals generated by the braking signal generation module and issues an alarm; When the information judgment module reaches the preset threshold, it will trigger the braking signal generation module to generate an alarm signal, and the braking signal generation module will send the alarm signal to the alarm module.

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