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] The present invention relates to a system for detecting the back-suction amount of coolant during vehicle refueling, belonging to the technical field of vehicle coolant refueling. Background Art

[0002] Automobile coolant is filled in the coolant tank of the vehicle, which can play the roles of antifreeze, anti-boiling, anti-corrosion, rust prevention, and scale prevention. Through condensation for heat exchange, the heat of the engine is carried to the radiator of the water tank.

[0003] Since the excess coolant needs to be back-sucked to the user-specified liquid level after being filled into the vehicle coolant tank, this part of the coolant is not actually filled into the vehicle interior.

[0004] In the prior art, it is impossible to accurately measure the back-sucked coolant after refueling, which results in a large difference between the actual amount of coolant filled in the vehicle and the refueling amount counted by the refueling equipment.

[0005] Currently, there is an urgent need in the market for a device that can complete the measurement of the back-sucked liquid of the device without extending the refueling time of the device. Summary of the Invention

[0006] The purpose of the present invention is to provide a system for detecting the back-suction amount of coolant during vehicle refueling to solve the problem that the back-suction amount of coolant cannot be accurately detected in the prior art.

[0007] The system for detecting the back-suction amount of coolant during vehicle refueling of the present invention adopts the following technical solutions.

[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 and processing module; the back-suction tank is connected to the filling pipe through the back-suction pipe and is connected to a vacuum generator through a vacuum pipe; the displacement sensor is arranged in the back-suction tank; the data acquisition module is connected to the displacement sensor, and the control and processing module is connected to the data acquisition module.

[0009] A floating ball is arranged in the back-suction tank, and under the action of liquid buoyancy, the floating ball moves up and down following the liquid level.

[0010] The displacement sensor adopts a high-precision electromagnetic displacement sensor, which can accurately measure minute liquid level changes, and its measurement accuracy can reach ±10μm.

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

[0012] The control and processing module uses a high-performance microprocessor with powerful data processing capabilities. It can perform real-time processing and calculation on the collected data according to a preset algorithm, and calculate the coolant back-suction volume based on a formula and sensor coefficients.

[0013] The control and processing module receives the data from the data acquisition module, and calculates the coolant back-suction volume V according to the sensor coefficient D. The formula is V = π(D / 4)²ΔH, where the sensor coefficient D is the inner diameter of the back-suction tank in mm, and the unit of the back-suction volume V is liters.

[0014] After the filling stops, the displacement sensor monitors the back-suction volume, and the data acquisition module transmits the displacement data to the control and processing module. The control and processing module accurately calculates the coolant back-suction volume for technicians to analyze and judge.

[0015] Without extending the equipment filling time, the present invention completes the metering of the back-sucked liquid of the equipment, thereby obtaining the accurate filling volume of the liquid in each vehicle, making it possible for users to obtain accurate vehicle filling data, which is of great significance for users' material use and reserve planning and better achieving energy conservation and emission reduction. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of the vehicle coolant filling and back-suction volume detection system of the present invention.

[0017] Figure 2 is a schematic structural diagram of the back-suction tank in the present invention.

[0018] Wherein: 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 and processing module, 9. Floating ball. Detailed Embodiment

[0019] The vehicle coolant filling and back-suction volume detection system of the present invention, as Figure 1 shown, includes a filling pipe 2, a back-suction tank 5, a displacement sensor 4, a data acquisition module 7, and a control and processing module 8.

[0020] The filling pipe 2 is connected to the vehicle coolant kettle and the coolant filling equipment. The front end of the filling pipe 2 is connected with a coolant filling gun 1, and the coolant filling gun 1 extends into the vehicle's coolant kettle for filling and back-sucking coolant for the vehicle. The coolant filling gun 1, the coolant kettle, and the coolant filling equipment are all prior arts.

[0021] The back suction tank 5 is used to store the back-sucked cooling liquid. The back suction tank 5 is connected to the filling pipe 2 through the back suction pipe 3 and is connected to the vacuum generator 6 through a vacuum pipe. The vacuum generator 6 generates a vacuum, evacuates the back suction tank 5 through the vacuum pipe, and then sucks the excess cooling liquid in the coolant kettle into the back suction tank 5 through the back suction pipe 3 and the filling pipe 2. See Figure 2 , a floating ball 9 is arranged in the back suction tank 5. Under the action of the buoyancy of the liquid, the floating ball 9 moves up and down following the liquid level.

[0022] See Figure 2 , a displacement sensor 4 is arranged in the back suction tank 5 to detect the change in the liquid level height in the back suction tank 5. The displacement sensor 4 adopts a high-precision electromagnetic displacement sensor, which can accurately measure the tiny liquid level change, and its measurement accuracy can reach ±10μm.

[0023] The data acquisition module 7 is connected to the displacement sensor 4 to collect the measurement data of the displacement sensor 4. A high-speed A / D converter is used to ensure that the sensor data can be collected quickly and accurately, and the sampling frequency is not less than 100Hz.

[0024] The control processing module 8 is connected to the data acquisition module 7. It adopts a high-performance microprocessor with powerful data processing capabilities and can perform real-time processing and calculation on the collected data according to the preset algorithm. The control processing module receives the data from the data acquisition module and calculates the coolant back suction volume according to the sensor coefficient.

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

[0026] First, in the filling stage, the coolant filling gun 1 is connected to the vehicle coolant kettle and is self-opened to make the filling pipe 2 communicate with the coolant kettle. The coolant is filled into the vehicle coolant kettle through the filling pipe 2 by the filling equipment.

[0027] After the filling is completed, it enters the back suction stage. Through the vacuum effect provided by the vacuum generator 6, the excess liquid in the vehicle coolant kettle flows into the back suction tank 5 in sequence through the coolant filling gun 1, the filling pipe 2, and the back suction pipe 3. In the back suction tank 5, the floating ball 8 moves upward under the action of the buoyancy of the liquid. The displacement sensor 4 obtains the changed distance ΔH of the floating ball 9 through electromagnetic induction and transmits the distance ΔH to the data acquisition module 7.

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

Claims

1. A system for detecting the amount of coolant back-sucking when filling a car, characterized in that: It 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 through the back-suction pipe, and is connected to the vacuum generator through a vacuum tube; the displacement sensor is arranged 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.

2. The automobile refilling coolant back-sucking amount detection system according to claim 1 is characterized in that: A floating ball is arranged in the back-suction tank.

3. The automobile refilling coolant back-sucking detection system according to claim 1 is characterized in that: The displacement sensor is an electromagnetic displacement sensor.

4. The automobile refilling coolant back-sucking amount detection system according to claim 1 or 3 is characterized in that: The measurement accuracy of the displacement sensor is ±10 μm.

5. The automobile refilling coolant back-sucking amount detection system according to claim 1 is characterized in that: The data acquisition module adopts an A / D converter.

6. The automobile refilling coolant back-sucking amount detection system according to claim 1 or 5, characterized in that: The sampling frequency of the data acquisition module is not less than 100 Hz.

7. The automobile refilling coolant back-sucking amount detection system according to claim 1 is characterized in that: The control processing module adopts a microprocessor.

8. The automobile refilling coolant back-sucking amount detection system according to claim 1 is characterized in that: The control processing module receives data from the data acquisition module and calculates the coolant back-suction volume V according to the sensor coefficient D, V=π(D / 4)2ΔH, the sensor coefficient D is the inner diameter of the back-suction tank, the unit is mm, and the unit of the back-suction volume V is liter.

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