CN113911089A - Intelligent hydraulic brake system and method - Google Patents
Intelligent hydraulic brake system and method Download PDFInfo
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- CN113911089A CN113911089A CN202111382496.XA CN202111382496A CN113911089A CN 113911089 A CN113911089 A CN 113911089A CN 202111382496 A CN202111382496 A CN 202111382496A CN 113911089 A CN113911089 A CN 113911089A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/72—Electrical control in fluid-pressure brake systems in vacuum systems or vacuum booster units
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Abstract
The invention relates to the technical field related to automobile manufacturing, in particular to an intelligent hydraulic brake system and method, which comprises a tire information detection module, a weather information acquisition module, a machine vision module, a central control processor and an intelligent hydraulic control brake module, wherein the tire information detection module, the weather information acquisition module and the machine vision module are respectively connected with the central control processor, the central control processor is also connected with the intelligent hydraulic control brake module, the system can acquire driving weather conditions, road surfaces and road conditions, tire pressure, tire heat and other related signals through a sensor, and after the central control processor processes and analyzes the signals, a hydraulic valve can self-adaptively select the optimal opening degree under the condition that a driver gives a brake instruction so as to control the acting force of the brake, so that the automobile can safely and stably brake and stop moving, and the requirements of active and passive safety, safety and the like can be met, Intelligent control and oil saving.
Description
Technical Field
The invention relates to the technical field related to automobile manufacturing, in particular to an intelligent hydraulic brake system and method.
Background
In recent years, the vehicle auxiliary driving system has gained public attention for improving the driving safety of the automobile, and the good vehicle auxiliary driving system can not only improve the driving safety, but also improve the driving experience. With the rapid development of the internet and computers, the development of machine vision gradually matures, and the machine vision is applied to the automobile, so that the vehicle can identify and avoid pedestrians, vehicles, obstacles and the like, and the driving safety can be effectively improved. However, the success rate of machine vision recognition is not particularly high at present, and certain problems exist, on the other hand, because relevant parameters such as road conditions, weather, tire states and the like are not considered, the brake control system of the vehicle can not be optimally controlled even after successful recognition, and therefore, the intelligent hydraulic brake system is provided.
Disclosure of Invention
In order to solve the above technical problems, the present invention provides an intelligent hydraulic brake system and method to solve the problems listed in the background art.
The utility model provides an intelligence hydraulic braking system, the system comprises tire information detection module, weather information acquisition module, machine vision module, well accuse treater, intelligent liquid accuse brake module, tire information detection module, weather information acquisition module, machine vision module respectively with well accuse treater is connected, well accuse treater again with intelligent liquid accuse brake module is connected.
Furthermore, the machine vision module comprises a camera, a ranging radar and a data processor, and is used for distinguishing different characteristics and colors of different obstacles by adjusting the contrast of images and tracking the position information of the obstacles in real time.
Furthermore, intelligence liquid accuse brake module comprises brake pedal, vacuum booster, hydrovalve, control motor, brake disc and brake master cylinder, brake pedal will brake the power by vacuum booster transduces to brake master cylinder, the hydrovalve is carried hydraulic oil according to the aperture signal that receives the brake disc produces brake.
The intelligent control braking method is characterized in that the central control processor detects the information of the tire information detection module, the weather information acquisition module and the machine vision module in real time and calculates the braking distance and the braking time, and when the machine vision module detects that a barrier needs to be braked and detects that a driver does not execute related operations, the central control processor starts the intelligent hydraulic control braking module.
Further, when the machine vision module judges that the processing result is safe, the braking force given by a driver is the main control force, and the intelligent braking system is only used as an auxiliary to adjust the opening degree to achieve the optimal oil saving effect; when the machine vision module judges that the machine vision module is unsafe, if a driver gives a braking reaction, the comprehensive regulation is carried out by combining the road condition, and the braking force given by the driver and the control opening degree of the hydraulic valve calculated by the central control processor are sent into an algorithm in a one-to-one calculation mode to carry out the selection of the optimal solution; if the driver does not brake in a decelerating way, the brake system automatically operates at the moment, and the brake force of the driver does not work in the whole process.
Compared with the prior art, the invention has the following beneficial effects:
the system has the advantages that the system can acquire relevant signals of driving weather conditions, road surfaces, road conditions, tire pressures of tires, tire heat and the like through the sensors, and the central control processor processes and analyzes the signals, so that the hydraulic valve can self-adaptively select the optimal opening degree under the condition that a driver gives a braking instruction so as to control the acting force of braking, the automobile can safely and stably brake and stop moving, and three requirements of active and passive safety, intelligent control and oil saving can be met simultaneously.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the control flow of the intelligent hydraulic control brake module according to the present invention;
fig. 3 is a schematic structural diagram of the intelligent hydraulic control brake module of the invention.
In the figure: 1. a hydraulic valve; 2. controlling the motor; 3. a brake pedal; 4. a vacuum booster; 5. a brake disc; 6. and a brake master cylinder.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An intelligent hydraulic brake system is shown in figure 1 and mainly comprises a tire information detection module, a weather information acquisition module, a machine vision module, a central control processor and an intelligent hydraulic control brake module. The connection arrows in fig. 1 indicate connection through a CAN communication bus or hardware, wherein the tire information detection module, the weather information acquisition module and the machine vision module are respectively connected with the central control processor, and the central control processor is connected with the intelligent hydraulic control brake module.
Tire information detection module: the method is mainly used for detecting relevant signals such as real-time tire pressure, tire heat, vehicle speed and the like in the running state of the vehicle. The relevant information is collected by the sensor and is transmitted to the central processing unit through the CAN bus, so that the central processing unit CAN judge the state of the vehicle and make a decision.
Weather information acquisition module: the method is mainly used for collecting the real-time weather condition of the vehicle in the running state. The module is mainly based on GPS positioning and consists of a temperature sensor, a humidity sensor and a rainfall sensor. The weather conditions affect the road adhesion coefficient and thus further affect the braking distance, so it is necessary to collect the weather condition information.
A machine vision module: the module is mainly used for detecting obstacles which may appear in the running state of the vehicle, including vehicles, people, fixed obstacles and the like. The module mainly comprises a camera, a ranging radar and a data processor. The camera is used for detecting whether an obstacle appears in front of a vehicle, the ranging radar is mainly used for measuring the distance between the obstacle and the vehicle, the data processor is used for processing detected information in real time, the method is different from the detection of a wide single obstacle at present, when different obstacles appear in front of the vehicle, the vision module highlights important details in the image by adjusting the contrast of the image, improves the image quality to distinguish different characteristics and colors of different obstacles, tracks position information of the obstacles in real time to avoid the obstacles, and then transmits the information to the central control processor through the CAN communication bus.
A central control processor: the invention is an information collection center used for receiving the transmitted signals and carrying out decision control. The module can receive relevant signals such as a tire state signal, a weather state signal, a vehicle speed signal, a vehicle turning signal, an accelerator pedal depth and the like. The central control processor detects the speed of the vehicle in real time and calculates the braking distance and the braking time, when the machine vision module detects that the obstacle needs to be braked, if a driver does not execute related operations, the central control processor issues a braking deceleration instruction to the braking module, and if necessary, emergency braking is executed to avoid accidents. The controller mainly adopts a fuzzy PID algorithm to carry out first-step screening on the data transmitted by the sub-modules, and then carries out decomposition of an optimal solution on the data through a neural network genetic algorithm to obtain specific control parameters of the brake hydraulic valve and transmit the specific control parameters to the control motor.
Intelligent liquid accuse brake module: the intelligent hydraulic control brake module is mainly used for controlling the deceleration and braking of the vehicle. The module is composed of a brake pedal, a vacuum booster, a hydraulic valve, a control motor, a brake disc and a brake master cylinder, as shown in fig. 3. When the vehicle needs braking deceleration, if the driver takes deceleration braking action, the action power transmission route is as follows: the vacuum booster is used for amplifying and transmitting force from the brake pedal to the brake master cylinder, and the hydraulic valve is opened according to the received opening degree signal to convey hydraulic oil to the brake disc to generate braking action.
When the processing result of the machine vision module is safe, the braking force given by the driver is the main control force, and the intelligent braking system only serves as an auxiliary for adjusting the opening degree to achieve the optimal oil-saving effect. When the processing result of the machine vision module is unsafe, if a driver gives a braking reaction, comprehensive adjustment is carried out by combining the road condition, and the braking force given by the driver and the control opening degree of a hydraulic valve calculated by the system are sent into an algorithm in a one-to-one calculation mode to select an optimal solution; if the driver does not brake in a decelerating way, the brake system automatically operates at the moment, and the brake force of the driver does not work in the whole process.
The working principle and the steps are as follows:
1. and a tire pressure sensor and a temperature sensor which are positioned in the tire and a vehicle speed sensor which is positioned on an axle housing of the drive axle transmit real-time signals to the central control processor.
2. Under the GPS state based on the Internet of vehicles, the local weather conditions are captured in real time, meanwhile, the temperature sensor, the humidity sensor and the rainfall sensor which are equipped for the vehicles acquire real-time data, and then the data are fed back to the central control processor.
3. A binocular camera and a radar are arranged right in front of the vehicle and used for detecting obstacles which possibly appear in front and measuring the distance between the obstacles and the vehicle.
4. The central control processor calculates safe braking distance and braking time according to the received vehicle speed signal, tire conditions and weather conditions, when an obstacle appears, the machine vision module can identify and measure the distance, then information is transmitted to the central control processor, the central control processor judges whether the distance between the obstacle and the vehicle is in a safe state, once the distance is lower than the safe braking distance, a driver does not adopt the speed reduction braking operation, the central control processor issues a speed reduction braking instruction to the control motor, the real-time opening degree of intelligent control is controlled under the control of the hydraulic valve, and the brake disc is further driven to clamp and brake.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention, and it is to be understood that the invention is not limited thereto, but may be modified within the scope of the appended claims.
Claims (5)
1. The utility model provides an intelligence hydraulic braking system, its characterized in that, the system comprises tire information detection module, weather information acquisition module, machine vision module, well accuse treater, intelligent liquid accuse brake module, tire information detection module, weather information acquisition module, machine vision module respectively with well accuse treater is connected, well accuse treater again with intelligent liquid accuse brake module is connected.
2. The intelligent hydraulic brake system of claim 1, wherein the machine vision module comprises a camera, a range radar and a data processor, and distinguishes different characteristics and colors of different obstacles by adjusting the contrast of images and tracks the position information of the obstacles in real time.
3. The intelligent hydraulic brake system of claim 1, wherein the intelligent hydraulic brake module comprises a brake pedal, a vacuum booster, a hydraulic valve, a control motor, a brake disc and a brake master cylinder, the brake pedal transmits a braking force from the vacuum booster to the brake master cylinder, and the hydraulic valve transmits hydraulic oil to the brake disc according to the received opening signal to generate braking.
4. The intelligent control braking method is characterized in that the central control processor detects the information of the tire information detection module, the weather information acquisition module and the machine vision module in real time and calculates the braking distance and the braking time, and when the machine vision module detects that a barrier needs to be braked and detects that a driver does not execute related operations, the central control processor starts the intelligent hydraulic control braking module.
5. The intelligent control brake method according to claim 4, wherein when the machine vision module processes the result and determines that the brake is safe, the brake force given by the driver is the main control force, and the intelligent brake system only assists in adjusting the opening degree to achieve the optimal oil saving effect; when the machine vision module judges that the machine vision module is unsafe, if a driver gives a braking reaction, the comprehensive regulation is carried out by combining the road condition, and the braking force given by the driver and the control opening degree of the hydraulic valve calculated by the central control processor are sent into an algorithm in a one-to-one calculation mode to carry out the selection of the optimal solution; if the driver does not brake in a decelerating way, the brake system automatically operates at the moment, and the brake force of the driver does not work in the whole process.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111382496.XA CN113911089A (en) | 2021-11-22 | 2021-11-22 | Intelligent hydraulic brake system and method |
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| CN202111382496.XA CN113911089A (en) | 2021-11-22 | 2021-11-22 | Intelligent hydraulic brake system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115416628A (en) * | 2022-08-25 | 2022-12-02 | 深圳市蓝度汽车电控技术有限公司 | Brake control method, device, equipment and computer readable storage medium |
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2021
- 2021-11-22 CN CN202111382496.XA patent/CN113911089A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115416628A (en) * | 2022-08-25 | 2022-12-02 | 深圳市蓝度汽车电控技术有限公司 | Brake control method, device, equipment and computer readable storage medium |
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