Isolation-type on-off state detection device

• Main Author: SONG XINJUN
• Format: Patent
• Language: English
• Published: 28.01.2015
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

An isolation-type on-off state detection device detecting the action of equipment like switches and buttons solves the problem that an existing monitoring method is complex and high in cost. The isolation-type on-off state detection device comprises a body, a built-in circuit board, transmission lines and a control loop, and is characterized in that the control loop packaged on the built-in circuit board of the body comprises a first control circuit composed of a first relay, a corresponding resistor, a corresponding diode and a corresponding triode, and a second control circuit composed of a second relay, a corresponding resistor, a corresponding diode and a corresponding triode, a detection signal output circuit, a switching signal input circuit and a switching signal output circuit are led out of the side surface of the body through the transmission lines respectively, and an external power source and a filter circuit control the first control circuit and the second control circuit to act to achieve dual synchronous state output of one input circuit and synchronous monitoring of the isolation-type state of a to-be-detected switch of input signals. The isolation-type on-off state detection device is reasonable in design, simple in structure, small in size and convenient to install on the site and does not need debugging, complete isolation-type detection is achieved, the circuits are not disturbed by one another, and the stability and accuracy of the detection state are guaranteed.