An electric valve interlock control system and control method

Abstract

The invention provides an electric valve interlocking control system and method. The electric valve interlocking control system comprises a system controller and a signal distributor, wherein the signal distributor is respectively connected with a first control circuit and a second control circuit; the first control circuit comprises a first programmable controller, a high-frequency signal detector, a high-frequency relay, a first electronic switch and an electric valve communicating coil which are connected in sequence; the second control circuit comprises a second programmable controller, a low-frequency signal detector, a low-frequency relay, a second electronic switch and an electric valve disconnection coil which are connected in sequence. The electric valve interlocking control system and method provided by the invention have the benefits that as the two independent control circuits are arranged, the opening and the closing of an electric valve are separately controlled; the connections of the two control circuits are respectively controlled by a high-frequency signal and a low-frequency signal, so that the possibility of error operation is reduced to a large extent; if appearing, the signal transmission error can also be detected out in time, and the signal is transmitted to another control circuit through a signal transmitter.

Description

technical field [0001] The invention belongs to the technical field of electromechanical systems, and in particular relates to an electric valve interlock control system and control method. Background technique [0002] With the continuous advancement of science and technology, electromechanical systems are widely used in production and life, and electric valves are widely used in electromechanical systems. In order to fully ensure the safety of users, the opening and closing of existing electric valves are usually operated by independent When two separate MOS tube channels are used to drive two independent coils, it should be ensured that only one of the two electromagnetic coils is powered on at the same time. If the two electromagnetic coils are powered on at the same time, it may cause damage to the electric valve. In order to prevent this from happening, software is usually used to make the output values ​​of the open electromagnetic coil and the close electromagnetic c...

AI Technical Summary

Problems solved by technology

[0002] With the continuous advancement of science and technology, electromechanical systems are widely used in production and life, and electric valves are widely used in electromechanical systems. In order to fully ensure the safety of users, the opening and closing of existing electric valves are usually operated by independent When two separate MOS tube channels are used to drive two independent coils, it should be ensured that only one of the two electromagnetic coils is powered on at the same time. If the two electromagnetic coils are powered on at the same time, it may cause damage to the electric valve. In order to prevent this from happening, software is usually used to make the output values ​​of the open electromagnetic coil and the close electromagnetic coil inconsistent, but this method is very easy to cause the open coil and the open coil of the dodge door to be damaged due to the carelessness of the programmer or the loopholes and errors of the software. Closing the coil while energizing causes damage to the electric valve

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