Method for preventing operator from falling, controller, safety belt and storage medium

The embodiment of the invention discloses a method for preventing an operator from falling, a controller, a safety belt and a computer readable storage medium. The method for preventing the operator from falling comprises the following steps that magnetic field information of a safety belt body worn by the operator is obtained; a preset fixed state mapping table is inquired according to the magnetic field information, the fixed state of the safety belt is obtained, and the fixed state mapping table is used for storing the mapping relation between the magnetic field information and the fixed state; and outputting an alarm signal according to the fixed state. Therefore, on the basis that the mechanical structure and safety performance of an existing safety belt are not changed, the fixing state information of the safety belt can be determined through matching of the magnetic field information of the safety belt, early warning is conducted in time when the safety belt is in an unfixed state, and the operation sa