System and method of level control DC electromagnet

Abstract

The invention discloses a system and method of a level control DC electromagnet. The system of the level control DC electromagnet comprises a signal trigger device, an NMOS transistor and an electromagnet, wherein the signal trigger device is electrically connected with the NMOS transistor, the NMOS transistor is electrically connected with the electromagnet, the signal trigger device is used forgiving out a control signal, the control signal is a high level signal or a low level signal, the NMOS transistor is used for acquiring changes of a high level and a lower level of the control signalto isolate and drive on / off of the electromagnet, and the electromagnet is isolated and driven to be opened when the control signal is detected to be the low level signal and is isolated and driven tobe closed when the control signal is detected to be the high level signal. With the adoption of a non-mechanical contact component to isolate and drive the electromagnet, and the equipment working potential risk brought by high frequency or long-term usage of the contact component to drive the electromagnet is solved; and with the adoption of a low level driving mode, the harmonic interference ofenvironment and circuit arrangement is effectively prevented, and normal working of the electromagnet is ensured.

Description

technical field [0001] The invention relates to the technical field of electromagnet-driven solenoid valves, in particular to a system and method for level-controlling a DC electromagnet. Background technique [0002] In the current hydraulic machinery industry, the action of the oil cylinder is generally completed by the solenoid valve driven by the electromagnet, and the electromagnet is generally driven by the intermediate relay, and the impact voltage is generated when the electromagnet is opened and closed, causing the intermediate relay to generate sparks and the intermediate relay. It has a service life, and the intermediate relay contacts are easily damaged or poor contact occurs, which then makes the electromagnet fail to open or close normally, resulting in abnormal operation of the equipment or even damage or personal injury; at the same time, the DC electromagnet is vulnerable to high current The interference of the product and the second harmonic voltage of the ...

AI Technical Summary

Problems solved by technology

[0002] In the current hydraulic machinery industry, the action of the oil cylinder is generally completed by the solenoid valve driven by the electromagnet, and the electromagnet is generally driven by the intermediate relay, and the impact voltage is generated when the electromagnet is opened and closed, causing the intermediate relay to generate sparks and the intermediate relay. It has a service life, and the intermediate relay contacts are easily damaged or poor contact occurs, which then makes the electromagnet fail to open or close normally, resulting in abnormal operation of the equipment or even damage or personal injury; at the same time, the DC electromagnet is vulnerable to high current The interference of the product, the second harmonic voltage of the product, affects the service life of the equipment

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