Abstract: As an important air flow control equipment in coal mine, the underground automatic air door has many problems such as poor target recognition accuracy and sensitivity, poor opening and closing, which seriously affect the safe and efficient production of coal mine. Aiming at the problems existing in the damper control link, this paper deeply analyzes the automatic control and monitoring technology of the damper, and proposes an intelligent locking control system of the damper based on the Arduino control in combination with the multi-sensor information fusion technology, which can realize the intelligent identification of the target passing through the damper, and at the same time can monitor the status of the damper and the surrounding environmental parameters in real time to realize the adaptive adjustment of the airflow, It is of practical significance to the construction of intelligent "one communication and three prevention" in coal mines.