Pressure acquisition module

Abstract

The utility model relates to the technical field of vehicle braking, in particular to a pressure acquisition module. The technical problems that according to an existing braking system, the wheel speed and the whole vehicle speed serve as reference values of braking control in the braking process, then the braking pressure is regulated and controlled, and therefore precision is not high, and the braking effect is not good enough are solved. According to the technical scheme, the pressure acquisition module comprises a main body control system, a data acquisition system and a data conversion system; the brake fluid pressure at the interface is detected in real time through the pressure sensor, a corresponding pressure signal is generated and transmitted to the ADC converter through the pressure sensor port, the ADC converter converts analog semaphore collected by the data collection system into digital semaphore, and then data exchange with an external vehicle control unit is carried out through the CAN port. The vehicle control unit judges the real-time state of the vehicle through the transmitted pressure signal, so that the braking process of the vehicle is controlled more accurately, and the driving safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle braking, in particular to a pressure acquisition module. Background Art

[0002] The hydraulic brake system is the most widely used brake system in the market. It is generally composed of a brake pedal, a hydraulic control unit (HCU), an electronic control unit, a brake actuator and hydraulic pipelines. It has the advantages of simple structure and easy use. However, the existing brake system only uses the wheel speed and the vehicle speed as reference values ​​for brake control during the braking process, and then regulates the brake pressure. Therefore, the accuracy is not high and the braking effect is not good enough. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a pressure acquisition module, which can detect the pressure of the braking system in real time and has the function of analog-to-digital conversion, so as to achieve precise control of the vehicle braking process and improve driving safety.

[0004] The technical solution of the utility model is: a pressure acquisition module, including a main control system, a data acquisition system and a data conversion system; the output end of the main control system and the input end of the data conversion system are connected to each other through a wire, the other input end of the data conversion system and the output end of the data acquisition system are connected to each other through a wire, the input end of the data acquisition and the output end of the hydraulic control unit are connected to each other through a three-way interface, and the output end of the data conversion system and the input end of the vehicle controller are connected to each other through a wire.

[0005] Preferably, the main control system includes a power supply and a power port; the power port is interconnected with the data conversion system via a wire.

[0006] Preferably, the data conversion system includes an ADC converter and a CAN port; the ADC converter is an analog-to-digital converter with an analog-to-digital conversion function, and the ADC converter is connected to the vehicle controller through the CAN port through electrical signals.

[0007] Preferably, the data conversion system further comprises a pressure sensor port; the pressure sensor port is interconnected with the data acquisition system via a wire, and the pressure sensor port is interconnected with the ADC converter.

[0008] Preferably, the data acquisition system includes pressure sensors, six groups of pressure sensors are provided, the pressure sensors are interconnected through wires and pressure sensor ports, and the six groups of pressure sensors are connected to the hydraulic interface of the hydraulic control unit through a three-way interface.

[0009] Preferably, the hydraulic control unit includes a master cylinder interface, and two groups of master cylinder interfaces are provided. The two groups of master cylinder interfaces are connected to the master cylinder of the vehicle ABS actuator through hydraulic pipelines.

[0010] Preferably, the hydraulic control unit also includes wheel cylinder interfaces, and four groups of wheel cylinder interfaces are provided. The four groups of wheel cylinder interfaces are connected to the wheel cylinders corresponding to four different wheels of the vehicle through hydraulic pipelines.

[0011] Beneficial effects of the utility model:

[0012] Compared with the prior art, the utility model detects the brake fluid pressure at the interface in real time through a pressure sensor, generates a corresponding pressure signal and transmits it to the ADC converter through the pressure sensor port. The ADC converter converts the analog signal quantity collected by the data acquisition system into a digital signal quantity, and then exchanges data with the external vehicle controller through the CAN port. In this way, the vehicle controller can judge the real-time status of the vehicle through the transmitted pressure signal combined with other vehicle signals, thereby more accurately controlling the vehicle braking process and improving driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 What is shown is a schematic diagram of the principle of the pressure acquisition module of the utility model;

[0014] Figure 2 What is shown is a schematic diagram of the first physical product of the pressure acquisition module of the utility model;

[0015] Figure 3 What is shown is a schematic diagram of a second physical product of the pressure acquisition module of the utility model;

[0016] Figure 4 The following is a schematic diagram of the partial structure of the pressure acquisition module of the utility model. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0018] See also Figure 1-4 The utility model provides an embodiment: a pressure acquisition module includes a main control system, a data acquisition system, a data conversion system, a vehicle controller and a hydraulic control unit; the output end of the main control system and the input end of the data conversion system are connected to each other through a wire, the other input end of the data conversion system and the output end of the data acquisition system are connected to each other through a wire, the input end of the data acquisition and the output end of the hydraulic control unit are connected to each other through a three-way interface, and the output end of the data conversion system and the input end of the vehicle controller are connected to each other through a wire.

[0019] In this embodiment, the main control system includes a power supply and a power port; the power port is interconnected with the data conversion system through a wire, and the data acquisition module is powered by the power supply. The data conversion system includes an ADC converter and a CAN port; the ADC converter is an analog-to-digital converter with an analog-to-digital conversion function. The ADC converter is connected to the vehicle controller through an electrical signal through the CAN port. The CAN port is a controller area network bus port. The collected analog signal is converted into a digital signal through the ADC converter, and data is exchanged with the vehicle controller through the CAN port. The vehicle controller can judge the real-time status of the vehicle through the transmitted pressure signal, thereby more accurately controlling the braking process of the vehicle. The data conversion system also includes a pressure sensor port; the pressure sensor port is interconnected with the data acquisition system through a wire, and the pressure sensor port and the ADC converter are connected to each other.

[0020] The data acquisition system includes a pressure sensor, six groups of pressure sensors are provided, the pressure sensors are connected to each other through wires and pressure sensor ports, the six groups of pressure sensors and the hydraulic interface of the hydraulic control unit are connected through a three-way interface, the brake fluid pressure signals at each interface of the hydraulic control unit are received through the six groups of pressure sensors, and the brake fluid pressure signals are transmitted to the ADC converter through the pressure sensor port, the hydraulic control unit includes a master cylinder interface, two groups of master cylinder interfaces are provided, the two groups of master cylinder interfaces are connected to the master cylinder of the vehicle ABS actuator through hydraulic pipelines, and the brake fluid pressure at the master cylinder interface is detected by the pressure sensor, the hydraulic control unit also includes a wheel cylinder interface, four groups of wheel cylinder interfaces are provided, the four groups of wheel cylinder interfaces are connected to the wheel cylinders corresponding to four different wheels of the vehicle through hydraulic pipelines, and the brake fluid pressure at the four groups of wheel cylinder interfaces is detected by the pressure sensor.

[0021] When working, the pressure acquisition module is powered by connecting the power supply through the power port, a three-way interface is added at the interface where each hydraulic interface of the vehicle hydraulic control unit and the hydraulic pipeline are connected, and a pressure sensor is added to each three-way interface. Six groups of pressure sensor sensing ends are installed on the corresponding three-way interfaces to detect the hydraulic pressure at the corresponding interfaces. FL, FR, RL, and RR correspond to four different wheels respectively. Each wheel cylinder interface is connected to the corresponding wheel cylinder through a hydraulic pipeline. MC1 and MC2 correspond to two groups of master cylinders respectively. Each master cylinder interface is connected to the corresponding master cylinder through a hydraulic pipeline. The signal line of the pressure sensor is connected to the six groups of sensor ports of the data acquisition system. The sensor ports are inside the module and The ADC converter is connected to transmit the data collected by the pressure sensor to the ADC module. The ADC converter is connected to the CAN port, and the CAN port is connected to the external vehicle controller. The pressure sensor detects the brake fluid pressure at the master cylinder interface and the four groups of wheel cylinder interfaces to generate corresponding pressure signals, and transmits the brake fluid pressure signals to the ADC converter through the pressure sensor port. The collected analog signal is converted into a digital signal through the ADC converter, and then the data is exchanged with the external vehicle controller through the CAN port. In this way, the vehicle controller can judge the real-time status of the vehicle through the transmitted pressure signal combined with other vehicle signals, so as to control the braking process of the vehicle more accurately.

[0022] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. The pressure acquisition module includes a main control system; its characteristics are: It also includes a data acquisition system, a data conversion system and a hydraulic control unit; the output end of the main control system and the input end of the data conversion system are connected to each other through a wire, the other input end of the data conversion system and the output end of the data acquisition system are connected to each other through a wire, the input end of the data acquisition and the output end of the hydraulic control unit are connected to each other through a three-way interface, and the output end of the data conversion system and the input end of the vehicle controller are connected to each other through a wire.

2. The pressure acquisition module according to claim 1, characterized in that: The main control system includes a power supply and a power supply port; the power supply port is connected to each other through a wire and a data conversion system.

3. The pressure acquisition module according to claim 1, characterized in that: The data conversion system includes an ADC converter and a CAN port; the ADC converter is an analog-to-digital converter with an analog-to-digital conversion function, and the ADC converter is connected to the vehicle controller through the CAN port through an electrical signal.

4. The pressure acquisition module according to claim 3, characterized in that: The data conversion system also includes a pressure sensor port; the pressure sensor port is connected to the data acquisition system through a wire, and the pressure sensor port is connected to an ADC converter.

5. The pressure acquisition module according to claim 1, characterized in that: The data acquisition system includes pressure sensors. Six groups of pressure sensors are provided. The pressure sensors and pressure sensor ports are connected to each other. The six groups of pressure sensors and the hydraulic interfaces of the hydraulic control unit are connected through three-way interfaces.

6. The pressure acquisition module according to claim 1, characterized in that: The hydraulic control unit includes a master cylinder interface. The master cylinder interface is provided with two groups. The two groups of master cylinder interfaces are connected to the master cylinder of the vehicle ABS execution system through hydraulic pipelines.

7. The pressure acquisition module according to claim 6, characterized in that: The hydraulic control unit also includes a wheel cylinder interface. There are four groups of wheel cylinder interfaces. The four groups of wheel cylinder structures are connected to the wheel cylinders corresponding to the four different wheels of the vehicle through hydraulic pipelines.

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