Positive pressure explosion-proof house monitoring device

The utility model relates to a positive pressure explosion-proof house monitoring device, which belongs to a monitoring safety device for preventing explosion or fire, and is characterized in that the positive pressure explosion-proof house monitoring device uses a programmable logic controller PLC as a core component, and is matched with an extended module A/D, a touch screen and various operating switches. Data acquisition comprises various detectors which are combustible gas, toxic gas, fire alarm, pressure and flow rate and the like. The configuration of an explosion-proof power supply comprises a transformer, a switch power, an alternating current contactor and a thermal relay. Various detectors, alarms and the explosion-proof power supply are put on proper places in a positive pressure explosion-proof house. The controller PLC, the extended module A/D, the touch screen and the explosion-proof power supply are arranged in an explosion-proof box body, and a booster fan is arranged outside 30m away of the positive pressure explosion-proof house. The PLC executes sequence control which are logic judgment, timing and counting and the like, the logical relation is comprehensive, reasonable and perfect and is more reliable than hard contacts of a relay, and the data acquisition is complete and accurate. The monitoring device can lead logging personnel on site to work in a logging work room which can be removed, has excellent environment and is safe.