Valve island multichannel pilot component energy-saving control device and method

Abstract

The invention provides a valve island multichannel pilot component energy-saving control device, comprising an MCU (microcontroller unit) and multiple control channels; the first control channel includes resistors R1, R2 and R3, photoelectric coupler U1, and PNP triode Q1; one end of the resistor R1 is connected with output I / O port of the MCU, and the other end of the resistor R1 is connected with an input end cathode of the photoelectric coupler U1, and an input end anode of the photoelectric coupler U1 is connected with positive voltage VCC; an output end transmitter of the photoelectric coupler U1 is grounded, an output end collector of the photoelectric coupler U1 is connected with one end of the resistor R2, and the other end of the resistor R2 is connected with a base of the PNP triode Q1 and one end of the resistor R3; the other end of the resistor R3 and an emitter of the PNP triode Q1 are connected with positive voltage VBUS; a collector of the PNP triode Q1 is used for generating control wave for the control channel. The valve island multichannel pilot component energy-saving control device can provide multichannel synchronous / asynchronous startup of a pilot terminal, with heat production of the pilot terminal effectively reduced.

Description

technical field [0001] The invention relates to a controller of an electromagnetic valve, in particular to an energy-saving control device for multi-channel pilot parts of a valve island. Background technique [0002] At present, domestic pilot-operated valves use direct push to open and close the valve body. This will not only cause the pilot head (including the electromagnetic coil) to heat up seriously, but also be easily damaged and reduce the service life; because the electromagnetic coil has The pull-in current is large and the maintenance current is small. There is also a method of designing an energy-saving module for a single coil in China, but it cannot be extended to the valve island, because the energy-saving module only transfers the heat of the pilot head to the outside through the power resistor, but its essence It is still hot and cannot be used. First, according to the usage of the valve island, the pilot head can be as few as a dozen or as many as hundreds....

AI Technical Summary

Problems solved by technology

[0002] At present, domestic pilot-operated valves use direct push to open and close the valve body. This will not only cause the pilot head (including the electromagnetic coil) to heat up seriously, but also be easily damaged and reduce the service life; because the electromagnetic coil has The pull-in current is large and the maintenance current is small. There is also a method of designing an energy-saving module for a single coil in China, but it cannot be extended to the valve island, because the energy-saving module only transfers the heat of the pilot head to the outside through the power resistor, but its essence It is still hot and cannot be used. First, according to the usage of the valve island, the pilot head can be as few as a dozen or as many as hundreds. Such a variable system makes the energy-saving module extremely hot, and the energy-saving module cannot adapt itself. variable loads, cannot be used in valve islands

Second, some people want to realize energy-saving control through the processor control coil, but the PWM interface of the general processor is generally only 8 channels, not many, and they want to achieve dozens or even nearly a hundred channels through the functions of the processor. No asynchronous PWM, and each channel will change on and off at any time, it is impossible

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