System for detecting back-suction amount of automobile filling cooling liquid

Abstract

A system for detecting the back-suction amount of automobile filling cooling liquid comprises a filling pipe, a back-suction pipe, a back-suction tank, a displacement sensor, a data acquisition module and a control processing module. The back-suction tank is connected with the filling pipe through a back-suction pipe and is connected with the vacuum generator through a vacuum pipe; the displacement sensor is arranged in the back suction tank; the data acquisition module is connected with the displacement sensor, and the control processing module is connected with the data acquisition module. And after filling is stopped, the displacement sensor monitors the back suction amount, the data acquisition module transmits displacement data to the control processing module, and the control processing module accurately calculates the back suction amount of the cooling liquid, so that technicians can analyze and judge the back suction amount conveniently. According to the system, metering of liquid sucked back by equipment is completed on the premise that the filling time of the equipment is not prolonged, so that the accurate filling amount of the liquid in each vehicle is obtained, and a user can obtain accurate vehicle filling data.

Description

Technical Field

[0001] This utility model relates to a system for detecting the amount of coolant backflow in an automobile, belonging to the field of automobile coolant filling technology. Background Technology

[0002] The coolant in a car's coolant reservoir serves to prevent freezing, boiling, corrosion, rust, and scale buildup. It also facilitates heat exchange through condensation, transferring heat from the engine to the radiator in the water tank.

[0003] Because the excess coolant needs to be drawn back to the user-specified level after being filled into the car's coolant reservoir, this portion of coolant is not actually filled into the vehicle's interior.

[0004] Existing technologies cannot accurately measure the coolant drawn back after filling, which results in a significant difference between the actual amount of coolant filled into the vehicle and the amount counted by the filling equipment.

[0005] There is an urgent need in the market for a device that can measure the backflow of liquid without extending the filling time of the device. Utility Model Content

[0006] The purpose of this invention is to provide a system for detecting the amount of coolant backflow during automotive refueling, in order to solve the problem that existing technologies cannot accurately detect the amount of coolant backflow.

[0007] The automotive coolant backflow detection system of this utility model adopts the following technical solution.

[0008] The system includes a filling pipe, a back suction pipe, a back suction tank, a displacement sensor, a data acquisition module, and a control processing module. The back suction tank is connected to the filling pipe via the back suction pipe and to the vacuum generator via a vacuum pipe. The displacement sensor is located in the back suction tank. The data acquisition module is connected to the displacement sensor, and the control processing module is connected to the data acquisition module.

[0009] The back suction tank is equipped with a float ball, which moves up and down with the liquid level under the action of liquid buoyancy.

[0010] The displacement sensor is a high-precision electromagnetic displacement sensor, which can accurately measure minute changes in liquid level, with a measurement accuracy of ±10μm.

[0011] The data acquisition module uses a high-speed A / D converter to ensure that sensor data can be acquired quickly and accurately, with a sampling frequency of not less than 100Hz.

[0012] The control and processing module uses a high-performance microprocessor with powerful data processing capabilities. It can process and calculate the collected data in real time according to a preset algorithm, and calculate the coolant backflow amount according to the formula and sensor coefficients.

[0013] The control processing module receives data from the data acquisition module and calculates the coolant backflow amount V based on the sensor coefficient D, where V = π(D / 4)2ΔH, the sensor coefficient D is the inner diameter of the backflow tank in mm, and the backflow amount V is in liters.

[0014] After the filling stops, the displacement sensor monitors the amount of coolant backflow. The data acquisition module transmits the displacement data to the control processing module, which accurately calculates the amount of coolant backflow so that technicians can analyze and make judgments.

[0015] This invention completes the metering of liquid backflow in the equipment without extending the equipment filling time, thereby obtaining the precise amount of liquid filled in each vehicle. This makes it possible for users to obtain accurate vehicle filling data, which is of great significance for users' material usage and storage planning, and for better achieving energy conservation and emission reduction. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the automotive coolant backflow detection system of this utility model.

[0017] Figure 2 This is a schematic diagram of the back suction tank in this utility model.

[0018] The components include: 1. Coolant filling gun, 2. Filling pipe, 3. Back suction pipe, 4. Displacement sensor, 5. Back suction tank, 6. Vacuum generator, 7. Data acquisition module, 8. Control processing module, and 9. Float. Detailed Implementation

[0019] This utility model relates to a system for detecting the amount of coolant drawn back into a vehicle during refueling. Figure 1 As shown, it includes a filling pipe 2, a back suction tank 5, a displacement sensor 4, a data acquisition module 7, and a control processing module 8.

[0020] The filling pipe 2 connects the vehicle's coolant reservoir and the coolant filling device. A coolant filling gun 1 is connected to the front end of the filling pipe 2. The coolant filling gun 1 extends into the vehicle's coolant reservoir and is used to add coolant and draw back coolant. The coolant filling gun 1, the coolant reservoir, and the coolant filling device are all existing technologies.

[0021] The back-suction tank 5 is used to store the back-suctioned coolant. The back-suction tank 5 is connected to the filling pipe 2 via the back-suction pipe 3, and to the vacuum generator 6 via a vacuum pipe. The vacuum generator 6 generates a vacuum, evacuates the back-suction tank 5 through the vacuum pipe, and then draws excess coolant from the coolant reservoir into the back-suction tank 5 through the back-suction pipe 3 and the filling pipe 2. See also... Figure 2 The back suction tank 5 is equipped with a float ball 9, which moves up and down with the liquid level under the action of liquid buoyancy.

[0022] See Figure 2 The displacement sensor 4 is installed in the back suction tank 5 to detect changes in the liquid level height inside the tank 5. The displacement sensor 4 is a high-precision electromagnetic displacement sensor, which can accurately measure minute changes in liquid level, with a measurement accuracy of ±10μm.

[0023] The data acquisition module 7 is connected to the displacement sensor 4 and is used to acquire the measurement data from the displacement sensor 4. A high-speed A / D converter is used to ensure fast and accurate acquisition of sensor data, with a sampling frequency of not less than 100Hz.

[0024] The control processing module 8 is connected to the data acquisition module 7 and employs a high-performance microprocessor with powerful data processing capabilities. It can perform real-time processing and calculations on the acquired data according to a preset algorithm. The control processing module receives data from the data acquisition module and calculates the coolant backflow amount based on the sensor coefficients.

[0025] The operation process of the above system is as follows.

[0026] First, during the filling stage, connect the coolant filling gun 1 to the vehicle's coolant reservoir and allow it to open automatically, connecting the filling hose 2 to the coolant reservoir. Coolant is then added to the vehicle's coolant reservoir through the filling hose 2 using the filling device.

[0027] After filling is complete, the coolant enters the back suction stage. A vacuum effect is provided by the vacuum generator 6, causing excess coolant in the vehicle's coolant reservoir to flow sequentially through the coolant filling gun 1, filling pipe 2, and back suction pipe 3 into the back suction tank 5. Inside the back suction tank 5, the float 8 moves upwards under the buoyancy of the coolant. The displacement sensor 4 acquires the distance ΔH of the float 9's change through electromagnetic induction and transmits this distance ΔH to the data acquisition module 7.

[0028] The control processing module 8 receives data from the data acquisition module 7 and calculates the back suction amount V (in L) based on the coefficient D of the displacement sensor 4 (which is the inner diameter of the back suction tank, in mm). V = π(D / 4)2ΔH.

Claims

1. A system for detecting the amount of coolant drawn back into a vehicle during refueling, characterized in that, The device comprises a filling pipe, a back suction pipe, a back suction tank, a displacement sensor, a data acquisition module and a control processing module; the back suction tank is connected with the filling pipe through the back suction pipe and connected with a vacuum generator through a vacuum pipe; the displacement sensor is arranged in the back suction tank; the data acquisition module is connected with the displacement sensor, and the control processing module is connected with the data acquisition module.

2. The system for detecting the back-sucked amount of the coolant added to the automobile according to claim 1, characterized by The back suction tank is provided with a floating ball.

3. The system for detecting the back-sucked amount of the coolant added to the automobile according to claim 1, characterized by The displacement sensor is an electromagnetic displacement sensor.

4. The system for detecting the back suction amount of the coolant filling of the automobile according to claim 1 or 3, characterized by The measurement accuracy of the displacement sensor is ±10μm.

5. The system for detecting the back-sucked amount of the coolant added to the automobile according to claim 1, characterized by The data acquisition module adopts an A / D converter.

6. The system for detecting the back suction amount of the coolant filling of the automobile according to claim 1 or 5, characterized by The sampling frequency of the data acquisition module is not less than 100Hz.

7. The system for detecting the back-sucked amount of the coolant added to the automobile according to claim 1, characterized by The control processing module adopts a microprocessor.

Images