False alarm prevention device and method thereof

The invention discloses an anti-error alarm device and a method thereof, and relates to the technical field of anti-error control. The mutual emission type echelette grating module is arranged at the to-be-monitored equipment and is connected with the control module; the pattern projection module is used for projecting a prohibited pattern or a non-prohibited pattern to a switch/button of the corresponding to-be-monitored equipment; the touch monitoring module comprises an electric laser module and a light sensing module, the electric laser module is used for emitting laser to a monitoring area for monitoring a switch/button of the to-be-monitored equipment, and the light sensing module receives the laser in the monitoring area, reflects the laser, obtains change information and sends the change information to the control module; and the control module is used for analyzing to obtain whether operation exists in the monitoring area according to the received change information, and controlling the alarm module