Intelligent automatic control system for mine gas chromatographs and its control method

An intelligent automatic control system for mine gas chromatographs, comprising:

• a central processing unit (CPU);
• a touch screen coupled to the CPU;
• a computer electrically coupled to the CPU;
• a remote transmission module communicatively coupled to the CPU;
• a remote mobile control terminal communicatively coupled to the remote transmission module;
• a relay unit electrically coupled to the CPU and electrically coupled to a digital output terminal, the digital output terminal electrically coupled, via the relay unit, to a component selected from the group consisting of a solenoid valve, at least one heater, a chromatograph motor, a six-way injection valve, a ten-way injection valve, a chromatograph automatic injection pump, flame ionization detector (FID) ignition coils, a thermal conductivity detector (TCD) bridge solenoid valve, at least one gas generator solenoid valve, and a standard gas/sample gas conversion valve;
• at least one temperature sensor and at least one gas pressure sensor electrically coupled to the CPU by an analog input terminal;
• a TCD bridge module electrically coupled to the CPU by an analog output terminal;
• and
• at least one pressure-controlling switch electrically coupled to the CPU by a digital input terminal.