A vehicle tire slip prevention system based on heat compensation and active control

Abstract

The application discloses a kind of automobile tire antiskid systems based on heat compensation and active control, including sensor, detection circuit, control circuit, heat transport circuit and output interface, wherein detection circuit is connected with sensor and control circuit respectively;Control circuit is connected with detection circuit and heat transport circuit respectively;Heat transport circuit is connected with control circuit;Output interface is connected with heat transport interface.The automobile will actively detect automobile tire temperature, ambient temperature, automobile antiskid regulation system (ASR), anti-lock braking system (ABS) with dynamic stability system (ESP) and other conditions, and accordingly control heat source selection, ventilation volume, ventilation speed, air temperature and ventilation time and other parameters.The application can solve the problem that wheeled vehicle is easy to slip when driving on snow and ice road, and can realize the antiskid performance of the automobile without affecting the normal driving of the automobile, thereby improving the safety of automobile driving.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of automobile safety protection, and particularly relates to a vehicle tire anti-skid system based on heat compensation and active control. BACKGROUND

[0002] As the only part of the automobile in contact with the ground, the health of the tire directly affects the safety of the vehicle driver and passengers. Especially in the winter rain and snow weather, the traffic environment becomes bad, and the vehicle is easy to skid, which greatly threatens the driving safety. The main external causes of vehicle skid are as follows: first, because the wet or rain and snow makes the ground wet and slippery, the friction coefficient between the tire and the road surface is reduced, the tire loses enough grip when driving or braking, and the skid phenomenon is easy to occur; second, because the temperature is low in the rain and snow weather, the rubber material of the tire becomes hard, and the ice and snow are filled in the tire pattern gap, which reduces the grip or braking performance of the tire and increases the risk of tire skid.

[0003] In view of the problem that the vehicle tire is easy to skid in the rain and snow weather, the existing anti-skid systems mainly have two types: (1) installing snow tires on the vehicle, the rubber formula and pattern of which are specially treated, so that the snow tires still have excellent grip on the ice, snow and wet road surface in winter, and ensure the safety of driving; (2) installing anti-skid chains on the vehicle, the anti-skid chains can concentrate the gravity of the vehicle on a few points of the iron chain, generate a huge pressure, and roll through the ice and snow layer to reach the road surface, so as to increase the friction and the safety factor of the vehicle driving.

[0004] Although the above two types of devices can be used to improve the problem of tire skid, they also have limitations. Because the snow tires adopt special design and material, the manufacturing cost of the snow tires is usually higher than that of ordinary tires, which makes the purchase and replacement cost of the snow tires relatively high; and the snow tires are not suitable for driving in warm seasons and all road conditions, so they need to be installed and removed every year, which is time-consuming and laborious. After the anti-skid chains are installed, the driving speed of the vehicle is usually limited; and noise is generated by friction with the road surface, which affects the driving comfort. SUMMARY

[0005] The purpose of the present application is to provide a vehicle tire anti-skid system based on heat compensation and active control, which provides a simple, fast and universal vehicle tire anti-skid system.

[0006] The technical solution adopted by the present application is:

[0007] A vehicle tire anti-skid system based on heat compensation and active control, comprising:

[0008] The detection circuit is connected with the temperature sensor and the control circuit respectively; the control circuit is connected with the detection circuit and the output interface respectively; the output interface is connected with the control circuit and the heat transfer circuit; the heat transfer circuit is connected with the output interface; the temperature sensor is connected with the detection circuit;

[0009] The detection circuit comprises a detection circuit input interface, a signal conditioning circuit, an instrument amplification circuit, a filter circuit, an analog-to-digital converter, a digital signal processor, a calibration circuit and a detection circuit output interface connected in sequence,

[0010] The control circuit is connected with the detection circuit and the output interface respectively.

[0011] The heat transfer circuit is connected with the fan, the engine, the electric heating switch, the valve, the control circuit and the output interface respectively.

[0012] The output interface is connected with the control circuit and the heat transfer circuit respectively.

[0013] The detection circuit comprises a detection circuit input interface, a signal conditioning circuit, an instrument amplification circuit, a filter circuit, an analog-to-digital converter, a digital signal processor, a calibration circuit and a detection circuit output interface connected in sequence, and the detection circuit input interface is connected with three temperature sensors, an automobile anti-slip regulation system (ASR), an anti-lock braking system (ABS) and a dynamic stability system (ESP).

[0014] The heat transfer circuit comprises a heat transfer circuit input interface, a heat source switch, a motor driver, a steering engine driver, a fan, a valve, an engine, an electric heater and a transmission pipeline, the heat transfer circuit input interface is connected with the output interface, the motor driver is connected with the fan, the steering engine driver is connected with the valve, and the heat source switch is connected with the engine and the electric heater respectively.

[0015] The transmission pipeline is provided with an air inlet hole 1, an air inlet hole 2, an air outlet hole 1, an air outlet hole 2, an air outlet hole 3 and an air outlet hole 4, one of the air inlet holes is connected with the engine, one of the air inlet holes is connected with the electric heater, and the air outlet holes 1, 2, 3 and 4 are arranged above the four tires of the automobile respectively.

[0016] The control circuit comprises a detection signal input interface, a total controller and a control signal output interface connected in sequence, the total controller is provided with an analog-to-digital converter, a feature extractor and a neural network processor, the detection signal input interface is connected with the analog-to-digital converter, the neural network controller is connected with the control signal output interface, and the control signal output interface is connected with the output interface.

[0017] The neural network processor comprises an input layer, a hidden layer and an output layer.

[0018] The temperature sensor is provided with three, one temperature sensor is arranged at the tire skin, is used for measuring the temperature of the tire, one temperature sensor is arranged on the engine, is fixedly connected with the outer wall of the engine, is used for measuring the temperature of the engine, one temperature sensor is arranged at the tail of the automobile, is fixedly connected with the inner wall of the shell of the tail of the automobile, is used for measuring the ambient temperature.

[0019] The beneficial effects of the present application are:

[0020] The automobile tire anti-skid system based on heat compensation and active control can realize real-time, simple and accurate automobile tire anti-skid operation. Specifically, in the case of poor road traffic, when the detection circuit of the automobile detects the state of the automobile through the real-time state of the automobile tire temperature, the environment temperature, the engine temperature and the ASR driving anti-skid program, and transmits the information to the control circuit, the control circuit judges whether the automobile needs to be anti-skid operated according to the information. If needed, the control circuit will start working through the motor drive, realize the opening of the valve through the steering gear drive, and adjust the opening and closing degree of the valve according to the actual situation. The preliminary work is completed. At this time, the control circuit judges whether the engine has enough heat to warm the tire. If yes, the engine heat is discharged from the air outlet to the tire through the pipeline to warm the tire. If not, the electric heating system will start working, and the heat generated is also discharged from the air outlet to the tire through the pipeline to warm the tire, so as to realize the anti-skid of the automobile tire and ensure the driving safety. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structure schematic view of the automobile tire anti-skid system based on heat compensation and active control of the present application.

[0022] Figure 2 It is a control system block diagram of the automobile tire anti-skid system based on heat compensation and active control of the present application.

[0023] Figure 3 It is a structure schematic view of the detection circuit of the present application.

[0024] Figure 4 It is a structure schematic view of the control circuit of the present application.

[0025] Figure 5 It is a structure schematic view of the heat transmission circuit of the present application.

[0026] Figure 6 It is a structure schematic view of the fuzzy controller of the present application.

[0027] Figure 7 It is a structure schematic view of the model predictive controller of the present application.

[0028] Fig. 1: 1. detection circuit, 2. control circuit, 3. output interface, 4. heat transfer circuit, 6. tire, 11. detection circuit input interface, 12. signal conditioning circuit, 13. instrument amplifier circuit, 14. filter circuit, 15. analog-to-digital converter, 16. digital signal processor, 17. calibration circuit, 18. detection circuit output interface, 51. temperature sensor a, 52. temperature sensor b, 53. temperature sensor c, 54. automobile anti-slip regulation system (ASR), 55. anti-lock braking system (ABS), 56. electronic stability program (ESP), 21. control signal input interface, 22. master controller, 23. control signal output interface, 211. analog-to-digital converter, 212. feature extractor, 213. neural network processor, 2011. input layer, 2012. hidden layer, 2013. output layer, 41. heat transfer circuit input interface, 42. heat source switch, 43. motor driver, 44. steering engine driver, 45. fan, 46. valve, 47. engine, 48. electric heater, 49. transmission pipeline, 311. air inlet hole 1, 312. air outlet hole 2, 313. air outlet hole 1, 314. air outlet hole 2, 315. air outlet hole 3, 316. air outlet hole 4. DETAILED DESCRIPTION

[0029] The application will be further described in conjunction with the accompanying drawings and examples:

[0030] Example 1

[0031] The application discloses an automobile tire anti-slip system based on heat compensation and active control, as shown in the figure, including detection circuit 1, control circuit 2, output interface 3, heat transfer circuit 4, wherein detection circuit 1 is connected with temperature sensor a 51, temperature sensor b 52, temperature sensor c 53 and control circuit 2 respectively; control circuit 2 is connected with detection circuit 1 and output interface 4 respectively. Figure 1

[0032] As shown in the figure, detection circuit 1 includes detection circuit input interface 11, signal conditioning circuit 12, instrument amplifier circuit 13, filter circuit 14, analog-to-digital converter 15, digital signal processor 16, calibration circuit 17 and detection circuit output interface 18 connected in sequence, detection circuit input interface 11 is connected with temperature sensor a 51, temperature sensor b 52 and temperature sensor c 53 respectively, the temperature sensor can detect the environment, engine and tire temperature, detection circuit 1 is connected with temperature sensor a 51, temperature sensor b 52, temperature sensor c 53, automobile anti-slip regulation system (ASR) 54, anti-lock braking system (ABS) 55 and electronic stability program (ESP) 56, and all the collected information is digitized. Figure 2

[0033] ​​As Figure 3 As shown in the figure, the control circuit 2 includes a control signal input interface 21, a total controller 22, a control signal output interface 23 connected in turn, the total controller 22 is provided with an analog-to-digital converter 211, a feature extractor 212 and a neural network processor 213 connected in turn, the neural network processor 213 is also connected with the controller output interface 23, and the controller output interface 23 is connected with the output interface 3, so that the real-time transmission of the tire temperature data; the control signal input interface 21 is connected with the analog-to-digital converter 211, and the analog signal is converted into a digital signal; the control circuit 2 is connected with the detection circuit 1 and the output interface 3 respectively, and the real-time information of the tire is optimized and transmitted in real time.

[0034] As Figure 4 As shown in the figure, the heat transmission circuit 4 includes a transmission pipeline 41, a heat source switch 42, a motor driver 43, a steering engine driver 44, a fan 45, a valve 46, an engine 47, an electric heater 48 and a transmission pipeline 49. When the control circuit 2 issues a command through the output interface 3 that the anti-skid operation needs to be performed, the heat transmission circuit 4 starts to work. The motor driver 43 drives the fan 45, the steering engine driver 44 drives the valve 46, and provides support and passage for the traditional heat. When the engine 47 temperature is high, the heat is provided by the engine 47 and sent to the tire through the transmission pipeline 49, when the engine 47 temperature is low, the heat source switch 42 switches the heat source to the electric heater 48, the heat is provided by the electric heater 48 and sent to the tire through the transmission pipeline 41, and the tire is warmed and anti-skid operation is performed.

[0035] Further, the BP neural network optimized by the genetic algorithm can make the tire monitoring device have the ability of intelligent classification processing. Through the global optimization ability of the genetic algorithm, the BP neural network can be effectively avoided to fall into the local minimum value, so that the optimal BP neural network initial weight and threshold value are obtained, instead of the original random weight and threshold value. This optimization strategy not only improves the convergence speed of the BP neural network, but also further improves the accuracy of the tire detection. In the present application, the tire anti-skid intelligent monitoring device has a plurality of key functions. First, it can realize comprehensive monitoring of the tire health status, including tire wear, tire pressure, load, temperature and other parameters. Secondly, through the BP neural network optimized by the genetic algorithm, the device can intelligently classify and process the monitoring data to identify abnormal tire conditions. This intelligent device is expected to be widely used in various vehicles, significantly improving the real-time performance and accuracy of tire health monitoring, thereby reducing the risk of traffic accidents caused by tire failure, and having obvious economic and social value. This technology will positively affect the safety and reliability of future intelligent transportation systems, providing a more secure travel experience for drivers and passengers.

[0036] Embodiment 2

[0037] Further, based on Embodiment 1, as shown in Figure 6 The microcontroller containing the neural network processor and the feature extractor can be set as a fuzzy controller 2021 according to the use requirements. The fuzzy controller 2021 is provided with a fuzzification interface 2022, an inference engine 2023, a knowledge base 2024, and a defuzzification interface 2025, wherein the knowledge base 2024 is composed of a database 2026 and a rule base 2027, the fuzzification interface 2022, the inference engine 2023, and the defuzzification interface 2024 are connected in sequence, and the inference engine 2023 is also connected with the knowledge base 2024. Fuzzy logic is a flexible and suitable control method for complex systems, which allows us to deal with uncertainty and fuzziness, and is particularly suitable for real-time applications such as automobile anti-skid control. Moreover, using the fuzzy controller can take into account the engine temperature, tire temperature, tire state and other related parameters as inputs, and can more efficiently and accurately calculate the corresponding control signals to adjust the heating system.

[0038] Embodiment 3

[0039] Further, based on Embodiment 1, as shown in Figure 7 The microcontroller containing the neural network processor and the feature extractor can be set as a model predictive controller 2031 according to the use requirements. The model predictive controller 2031 is internally provided with a prediction model 2032, a rolling optimization 2033, and a feedback correction 2034. Based on the real-time data provided by the sensors and the heat compensation model, the system uses the model predictive control method to predict the slip condition of each wheel; according to the predicted tire slip condition, the system generates corresponding control signals for adjusting the braking force or driving force of each wheel and the opening and closing of the valve to reduce the slip and improve the traction and stability of the vehicle. The system continuously adjusts the prediction and control strategy in real time according to the sensor feedback and the update of the heat compensation model to adapt to the changes of the road conditions and the dynamic characteristics of the vehicle, and maintains the best anti-skid effect.

[0040] The above description is only the preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made on the basis of the present application is within the protection scope of the present application.

Claims

1. A slip prevention system for vehicle tires based on thermal compensation and active control, characterized in that, It comprises a detection circuit (1) and a temperature sensor (5); The detection circuit (1) is connected with the temperature sensor (5) and the control circuit (2) respectively; the control circuit (2) is connected with the detection circuit (1) and the output interface (3) respectively; the output interface (3) is connected with the control circuit (2) and the heat transfer circuit (4); the heat transfer circuit (4) is connected with the output interface (3); the temperature sensor (5) is connected with the detection circuit (1). The detection circuit (1) comprises a detection circuit input interface (11), a signal conditioning circuit (12), an instrument amplification circuit (13), a filter circuit (14), an analog-to-digital converter (15), a digital signal processor (16), a calibration circuit (17) and a detection circuit output interface (18) connected in sequence, and the detection circuit input interface (11) is connected with a temperature sensor a (51), a temperature sensor b (52), a temperature sensor c (53), an automobile anti-slip regulation system (ASR) (54), an anti-lock braking system (ABS) (55) and a dynamic stability system (ESP) (56). The heat transfer circuit (4) comprises a heat transfer circuit input interface (41), a heat source switch (42), a motor driver (43), a steering engine driver (44), a fan (45), a valve (46), an engine (47), an electric heater (48) and a transmission pipeline (49), the heat transfer circuit input interface (41) is connected with the output interface (3), the motor driver (43) is connected with the fan (45), the steering engine driver (44) is connected with the valve (46), the heat source switch (42) is connected with the engine (47) and the electric heater (48) respectively. The transmission pipeline (49) is provided with air inlet hole 1 (311), air inlet hole 2 (312) and air outlet hole 1 (313), air outlet hole 2 (314), air outlet hole 3 (315) and air outlet hole 4 (316), one of the air inlet hole 1 (311) is connected with the engine (37), one of the air inlet hole 2 (312) is connected with the electric heater (38), and the air outlet hole 1 (313), the air outlet hole 2 (314), the air outlet hole 3 (315) and the air outlet hole 4 (316) are arranged above the four tires of the automobile respectively.

2. A slip prevention system for vehicle tires based on thermal compensation and active control as claimed in claim 1, characterized in that, The control circuit (2) comprises a detection signal input interface (21), a total controller (22) and a control signal output interface (23) connected in sequence, the total controller (22) is provided with an analog-to-digital converter (211), a feature extractor (212) and a neural network processor (213) inside, the detection signal input interface (11) is connected with the analog-to-digital converter (211), the neural network controller (213) is connected with the control signal output interface (21), and the control signal output interface (2) is connected with the output interface (3).

3. A slip prevention system for vehicle tires based on thermal compensation and active control as claimed in claim 2, characterized in that, The neural network processor (213) comprises an input layer (2011), a hidden layer (2012) and an output layer (2013).

4. A slip prevention system for vehicle tires based on thermal compensation and active control according to claim 1 or 2, characterized in that, The temperature sensor a (51) is provided with one, one temperature sensor a (51) is arranged at the tire (6) skin, one temperature sensor a (51) is fixedly connected with the inner wall of the tire shell.

5. A slip prevention system for vehicle tires based on thermal compensation and active control as claimed in claim 1 or 2, characterized in that, The temperature sensor b (52) is provided with one, one temperature sensor b (52) is arranged on the engine (47), one temperature sensor b (52) is fixedly connected with the outer wall of the engine (47).

6. A slip prevention system for vehicle tires based on thermal compensation and active control as claimed in claim 1 or 2, characterized in that, The temperature sensor c (53) is provided with one, one temperature sensor c (53) is arranged at the tail of the automobile, one temperature sensor c (53) is fixedly connected with the inner wall of the tail shell.

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