Control device and method for starting and stopping oxyhydrogen decarbonizing machine

A control device and method for starting and stopping an oxyhydrogen decarbonizing machine belongs to the technical field of oxyhydrogen decarbonizing machine application. The problem that an oxyhydrogen decarbonizing machine control system fails in distinguishing due to the fact that a method of judging an automobile engine operation state by detecting vacuum suction of an automobile air inlet pipe is not general is solved. A digital-to-analog (DA) converting circuit of the device is used for collecting a voltage signal of an automobile storage battery which is the automobile storage battery of an engine to be cleaned. The DA converting circuit transmits a converted simulation voltage signal to a programmable logic controller (PLC), and the PLC compares the collected voltage signal with an inner preset voltage threshold and outputs a control signal to the oxyhydrogen decarbonizing machine to control starting or stopping of the oxyhydrogen decarbonizing machine. The control method includes that the inner voltage threshold of the PLC is first set and then compared with the collected voltage signal, and the operation state of the oxyhydrogen decarbonizing machine is controlled. The control device and method is used for controlling the oxyhydrogen decarbonizing machine.