| 摘要 |
The purpose of the present invention is to enable use of a solenoid-type electromagnetic valve (120) in a valve driving device (10) that performs wireless communication. A contact signal converter (110) that converts an on-off contact signal to a control signal for operating a solenoid-type electromagnetic valve (120) comprises an explosion protection barrier (115) which restricts the current of the control signal to be no more than a maximum current established for safety regarding solenoid-type electromagnetic valves (120), and a group of batteries (111), the number of which can ensure a voltage at which the voltage supplied via the explosion protection barrier (115) surpasses the operating voltage of the solenoid-type electromagnetic valve (120). |
