Gas environment monitoring sensing device for fermentation bin

The utility model discloses a gas environment monitoring sensing device for a fermentation bin, a sensing box comprises a temperature and humidity sensor, an oxygen concentration sensor and a controller which are arranged in the sensing box, and the controller obtains temperature and humidity detected by the temperature and humidity sensor and oxygen concentration detected by the oxygen concentration sensor; the opening channel controls the inlet three-way valve and the outlet three-way valve; the inlet three-way valve and the outlet three-way valve are respectively arranged on two sides of the sensing box; the air inlet and the air outlet are connected with two side walls of the fermentation bin, three channels of the three-way valve are respectively connected with the air inlet, the sensing box and the air inlet, and the air inlet is communicated with outside air; three channels of the three-way valve are respectively connected with the air outlet, the sensing box and the air outlet, and the air outlet is c