The Role of Virtual Instrument Technology in the Parameter Detection of Switchgear Cabinet
When the relay is off , The corresponding voltage is 0V, I / O port is "0". When the relay to add the magnetic voltage, the microcontroller to a small enough sampling cycle to read the corresponding digital I / O port,
The principle of detection is that when the relay contact is closed, the input voltage is 5V and the port is "1"
In the literature, a time parameter detection circuit is mentioned. The main components of the circuit are single-chip microcomputer
With the development of computer technology, more and more relay detection devices use microprocessors, these detection devices are basically the same principle.
