Locomotive air source purification device controller

Abstract

The invention provides a locomotive air source purification device controller which comprises a box body and a circuit device. The circuit device comprises an interface, a power supply, a first indicator lamp, a second indicator lamp, an alarming indicator lamp and a control circuit board, wherein the interface, the power supply, the first indicator lamp, the second indicator lamp and the alarming indicator lamp are installed on the box body, and the control circuit board is fixedly installed in the box body. The control circuit board is provided with a power circuit, a signal input circuit, a single chip microcomputer control circuit, a first output control circuit, a second output control circuit, a first execution circuit, a second execution circuit and an alarming circuit. The power circuit provides a working power supply for the other circuits. The signal input circuit, the first output control circuit and the second output control circuit perform isolation through a photoelectric coupler and performs shaping and inverting through a Schmitt trigger. Starting signals of an air compressor of a locomotive are processed by the single chip microcomputer control circuit and then output by the first output control circuit and the second output control circuit, and afterwards, the first execution circuit and the second execution circuit control two electric pneumatic valves on the locomotive so as to control two drying and purifying towers to work. The locomotive air source purification device controller is strong in anti-interference capacity, high in time control precision and high in working reliability.

Description

technical field [0001] The invention relates to the technical field of air source purification control, in particular to a controller of a locomotive air source purification device. Background technique [0002] The compressed air on the locomotive is stored in the main air cylinder, and the compressed air in the main air cylinder is provided by the air compressor on the locomotive. The air provided by the air compressor must be purified before it can be used by the air system on the locomotive. Therefore, an air source purification device for purifying the air needs to be connected in series between the air compressor and the main air cylinder. Commonly used air source purification devices mainly include two drying and purification towers, which perform adsorption and regeneration in turn, so that the air flowing through the two drying and purification towers can be dried and purified, and the dried and purified air is sent to The main air cylinder is used for the air syst...

AI Technical Summary

Problems solved by technology

[0003] Chinese Patent Document No. CN 86200250U discloses an electrical control device for a locomotive wind source purification system, and its disadvantages at least include: the device fully adopts an analog circuit, has poor memory function, and insufficient precision, and adopts stepping relays to work reliably. high

At present, the controllers of common wind source purification devices on locomotives generally use digital circuits, but there are also problems such as timing accuracy depends on the accuracy of variable resistors and capacitors, the signal loop is not isolated from the locomotive electrical loop, and the components used in the controller are relatively small. Inadequacies such as affecting its working reliability

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