CN202686337U - Brake system based on anti-lock brake system - Google Patents

Abstract

The utility model discloses a braking system based on an anti-lock braking system. The system includes a manual braking module adopting a conventional braking mode, an electronic braking module adopting an anti-lock braking mode, and is used for measuring braking time. The wheel speed sensor of the wheel speed, the system also includes a central processing module for calculating the angular acceleration according to the wheel speed obtained by the wheel speed sensor and outputting a control signal according to the angular acceleration, and for driving the electronic brake according to the control signal output by the central processing module The control loop of the moving module or the manual braking module, the central processing module is electrically connected to the control loop, and the control loop is electrically connected to the electronic braking module and the manual braking module; the utility model compares the angular acceleration obtained by measurement with the threshold value, According to the comparison result, a control signal is output to the control loop, and the control loop selects the braking mode according to the obtained control signal, so that the vehicle can be provided with an appropriate braking force according to the real-time driving conditions.

Description

Braking system based on anti-lock braking system

technical field

The utility model relates to the technical field of braking, in particular to a braking system based on ABS (Anti-locked Braking System, anti-lock braking system).

Background technique

The ABS system is an automobile safety control system with the advantages of anti-skid and anti-lock. The ABS system is an improved technology based on the conventional braking device. It not only has the braking function of the ordinary braking system, but also prevents the wheels from locking up, so that the car can still turn under braking and ensure the stability of the braking direction of the car. It is the most advanced brake device with the best braking effect on the car at present to prevent sideslip and deviation.

The existing ABS system can be divided into mechanical type and electronic type. Among them, the electronic type ABS starts to act at the moment when the wheel is locked, controlled by the driving computer, and acts 6-12 times per second. In practical applications, the real-time performance of the electronic ABS system will be affected by the external environment, such as magnetic circuit, circuit interference, unevenness caused by tire wear, rough road surface, measurement error, etc. Under these circumstances, the existing ABS electronic braking system , may cause insufficient braking force, resulting in increased braking distance.

Utility model content

In order to solve the problem of insufficient braking force provided by the electronic ABS in an emergency in the prior art, the embodiment of the utility model provides a braking system based on an anti-lock braking system. Described technical scheme is as follows:

A braking system based on an anti-lock braking system, the system includes: a manual braking module adopting a conventional braking mode, an electronic braking module adopting an anti-lock braking mode, and a device for measuring wheel speed during braking wheel speed sensors, the system further comprising:

A central processing module for calculating angular acceleration based on the wheel speed obtained by the wheel speed sensor and outputting a control signal according to the angular acceleration, and for driving the electronic braking module or A control loop for the manual braking module to work, the central processing module is electrically connected to the control loop, and the control loop is electrically connected to the electronic braking module and the manual braking module.

Further, the central processing module includes: a calculation unit for calculating the angular acceleration according to the wheel speed obtained by the wheel speed sensor, and for comparing the angular acceleration calculated by the calculation unit with a predetermined threshold and obtaining the comparison A comparison unit for the result and an output unit for outputting a control signal according to the comparison result obtained by the comparison unit; the calculation unit is electrically connected with the wheel speed sensor and the comparison unit at the same time, and the comparison unit is also connected with the The output unit is electrically connected, and the output unit is electrically connected to the control loop.

Further, the central processing module further includes a threshold setting unit for setting the threshold; the threshold setting unit is electrically connected to the comparing unit.

The beneficial effect brought by the technical solution provided by the embodiment of the utility model is: the angular acceleration obtained by measurement is compared with the threshold value, and a control signal is output to the control loop according to the comparison result, and the control loop selects the braking mode according to the obtained control signal, It realizes providing the appropriate braking force for the car according to the real-time driving conditions.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some implementations of the present invention. For example, those of ordinary skill in the art can also obtain other drawings based on these drawings on the premise of not paying creative efforts.

Fig. 1 is a schematic structural diagram of a braking system based on an anti-lock braking system provided in Embodiment 1 of the present utility model.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model clearer, the implementation of the present utility model will be further described in detail below in conjunction with the accompanying drawings.

Example 1

Referring to Fig. 1, the utility model provides a braking system based on an anti-lock braking system, which includes: a manual braking module 100 adopting a conventional braking mode, an electronic braking module adopting an anti-lock braking mode 200, the wheel speed sensor 300 for measuring the wheel speed when braking, the central processing module 400 for calculating the angular acceleration according to the wheel speed obtained by the wheel speed sensor 300 and outputting the control signal according to the angular acceleration, and the central processing module 400 for outputting the control signal according to the central processing module 400 The output control signal drives the electronic braking module 200 or the control loop 500 of the manual braking module 100 to work, the central processing module 400 is electrically connected to the control loop 500, and the control loop 500 is electrically connected to the electronic braking module 200 and the manual braking module 100 .

Among them, the electronic braking module 200 is mainly composed of motors, magnetic coils and other components, which are well known to those skilled in the art, so detailed descriptions are omitted; the electronic braking module 200 adopts an anti-lock braking mode, and the anti-lock braking mode Mode means that when braking, the brake device acts on the wheel in an alternate way of clamping and releasing, so that the wheel can continue to rotate. The manual braking module 100 mainly includes brake pads, etc., and adopts a conventional braking mode. The conventional braking mode means that when braking, the braking device completely clamps the wheel, and the purpose of doing so is to increase the braking force. The central processing module 400 may adopt a central processing unit.

Further, the central processing module 400 includes: a calculation unit 401, a comparison unit 402 and an output unit 403; the calculation unit 401 is electrically connected to the wheel speed sensor 300 and the comparison unit 402 at the same time, and the comparison unit 402 is also electrically connected to the output unit 403, and the output unit 403 is electrically connected to the control circuit 500 . Wherein, the calculation unit 401 is used for collecting the speed information of the wheels in real time, and calculating the angular acceleration value a of the wheels. The comparison unit 402 is configured to compare the angular acceleration a calculated by the calculation unit 401 with a predetermined threshold, and obtain a comparison result. The output unit 403 is configured to output a control signal according to the comparison result obtained by the comparison unit 402 .

Specifically, the predetermined threshold may include a maximum angular deceleration a1 and a minimum recovery angular velocity a2, and the comparison unit 402 compares the angular acceleration value a with the values of the maximum angular deceleration a1 and the minimum recovery angular velocity a2, wherein, in the case of braking , the value of a is a negative value, which is called angular deceleration. When the value of a is less than the preset threshold a1, it means that the vehicle speed decreases too fast, and the wheels tend to lock. The output unit 403 outputs a control signal, so that the control loop 500 drives the electronic brake module 200, and changes it to an automatic brake control mode, that is, the driving computer controls the braking force of the wheels to prevent the wheels from being locked; another possibility is that when the value of a exceeds a1, the driving computer successfully realizes After automatic braking, the value of a at a certain moment is positive, indicating that the braking force is too small at this time, and the wheels tend to accelerate, especially when the value of a is greater than the minimum recovery angular velocity a2, the output unit 403 outputs a control signal, so that the control loop 500 drives the manual braking module 100, so that the braking device, such as a brake pad, clamps the tire to increase the braking force.

Further, the central processing module 400 also includes a threshold setting unit 404 ; the threshold setting unit 404 is electrically connected to the comparison unit 402 . The threshold value setting unit 404 is configured to set the above-mentioned values of a1 and a2 according to different road surfaces and tire wear.

The beneficial effect brought by the technical solution provided by the embodiment of the utility model is: the angular acceleration obtained by measurement is compared with the threshold value, and a control signal is output to the control loop according to the comparison result, and the control loop selects the braking mode according to the obtained control signal, It realizes providing the appropriate braking force for the car according to the real-time driving conditions.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (3)

1. A braking system based on an anti-lock braking system, the system comprising: a manual braking module (100) adopting a conventional braking mode, an electronic braking module (200) adopting an anti-lock braking mode, A wheel speed sensor (300) for measuring the wheel speed during braking; it is characterized in that the system also includes: A central processing module (400) for calculating angular acceleration based on the wheel speed obtained by the wheel speed sensor (300) and outputting a control signal according to the angular acceleration, and for controlling the output based on the central processing module (400) The signal drives the control loop (500) of the electronic brake module (200) or the manual brake module (100), the central processing module (400) is electrically connected with the control loop (500), the The control loop (500) is electrically connected with the electronic braking module (200) and the manual braking module (100). 2. The braking system based on the anti-lock braking system according to claim 1, characterized in that, the central processing module (400) includes: for calculating the wheel speed according to the wheel speed obtained by the wheel speed sensor (300) An angular acceleration calculation unit (401), a comparison unit (402) for comparing the angular acceleration calculated by the calculation unit (401) with a predetermined threshold value and obtaining a comparison result, and a comparison unit (402) for obtaining a comparison result according to the comparison unit (402 ) an output unit (403) that outputs a control signal from the comparison result obtained; the calculation unit (401) is electrically connected to the wheel speed sensor (300) and the comparison unit (402) at the same time, and the comparison unit (402) It is also electrically connected with the output unit (403), and the output unit (403) is electrically connected with the control loop (500). 3. The braking system based on an anti-lock braking system according to claim 2, characterized in that, the central processing module (400) further comprises a threshold setting unit (404) for setting the threshold; The threshold setting unit (404) is electrically connected to the comparing unit (402).

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