Automobile air conditioner flow and pressure measurement and control system based on WIFI technology

Abstract

The objective of the invention is to provide an automobile air conditioner flow and pressure measurement and control system based on a WIFI technology. The system comprises a control module, a sensing module, a detection module, a storage module and a WIFI module; the sensing module comprises a first high-pressure flow sensor, a second high-pressure flow sensor, a high-pressure pressure sensor, a high-pressure temperature sensor, a first low-pressure flow sensor, a second low-pressure flow sensor, a low-pressure pressure sensor and a low-pressure temperature sensor. The control module comprises an amplifier and a bidirectional association control circuit, the control module is in bidirectional connection with the WIFI module, the detection module is configured to detect the work conditions of an air conditioner switch and an electromagnetic clutch; and the storage module is configured to store system data. The automobile air conditioner flow and pressure measurement and control system based on the WIFI technology can perform measurement and control of the flow and the pressure of an air conditioner when the air conditioner is running no matter what an automobile remains stationary or running, perform prompting when the automobile air conditioner pipeline is obstructed or the pressure is abnormal, is convenient to use and can accurately calculate the amount of added refrigerant or refrigerant oil.

Description

technical field [0001] The invention relates to the technical field of automobile measurement and control, in particular to an automobile air-conditioning flow and pressure measurement and control system based on WIFI technology. Background technique [0002] Automobile air conditioner is one of the key equipments for automobile comfort. Lack of air conditioner or air conditioner with poor cooling effect or no cooling will deteriorate the driving environment inside the car, make the passengers inside dizzy or even uncomfortable, and the driver doze off, etc., which will seriously lead to car accidents Therefore, with the development of our country's society, air conditioners are getting more and more attention from everyone. During the long-term use of the car air conditioner, due to various reasons such as wear and tear, the car air conditioner does not cool or cools intermittently, which seriously affects the comfort of the car. [0003] The biggest reason for the lack of...

AI Technical Summary

Problems solved by technology

There is a certain amount of refrigerant to be added. The traditional way of adding refrigerant is to fill through the manifold pressure gauge, which often reflects an approximate amount through the pressure of the gauge head. Because the amount of addition is very uncertain, This often cannot keep the car air conditioner in an optimal working range

When the automobile air conditioner is running, it is also necessary to replenish the refrigeration oil in a timely manner. The traditional filling of refrigeration oil is often based on maintenance experience. It is often poured into the compressor or the system is vacuumed and then sucked in through the manifold pressure gauge. If the process is not properly operated, it is easy to enter the air during the adding process, which will affect the normal operation of the air conditioner. These are often unable to determine the specific value, which is not conducive to the optimal operation of the car air conditioner

Some large-scale maintenance shops on the market use large-scale maintenance and refrigerant and refrigeration oil adding equipment, such as the automobile air-conditioning refrigerant recovery and filling machine produced by Beijing New Global Weiye Electromechanical Equipment Company, which sells for 4,500 yuan. It is manually operated and often imported from abroad. Tens of thousands of yuan, expensive, large space, inconvenient to move, etc., and all need to be temporarily installed for diagnosis when the car is stationary, and then dismantled

[0006] In the teaching of automobile air conditioner inspection and maintenance, the teacher often tells a car air conditioner stand through a connecting device, and a group of students watch it around. Due to the large number of people, each person cannot view the data in detail, so that students can learn The air conditioner seems to understand but not understand, which is not conducive to the improvement of teaching quality

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