Monitoring system for feedback production process of production workshop

The utility model relates to a production workshop feedback production process monitoring system comprising a rack, the rack is provided with a conveyor belt, a motor, a control unit and a detection unit, and the detection unit comprises an infrared emitter, an infrared receiver, a motor rotation speed collector and a snapshot camera; in the packaging paper production process, cut and printed packaging paper is placed on the transparent conveying belt, whether the packaging paper exists on the transparent conveying belt or not is sensed through the infrared transmitter and the infrared receiver, a timing period is started when signals of the infrared receiver are interrupted, the period is finished when the infrared signals are received again, and then the packaging paper is cut off. The advancing distance of the transparent conveying belt in the period can be calculated by combining the motor rotating speed collected by the motor rotating speed collector and the radius of the belt pulley, so that the size of