Human Body Safety Protection Laser Sensor for Revolving

A laser sensor for human body safety protection for use in a revolving door, characterized by comprising:

• a laser scan range calculation section and an application analysis section;
• the laser scan range calculation section comprises a laser emitting device, a laser deflecting device, an optical signal receiving device, and an analyzing and processing device;
• wherein, the laser emitting device transmits laser signals to the laser deflecting device;
• the laser deflecting device deflects the laser signals by a pre-set angle under the control of the analyzing and processing device and forms at least one laser scan area;
• the optical signal receiving device is used for receiving returned laser signals and transmitting said signals to the analyzing and processing device;
• the analyzing and processing device comprises a trigger point distance analyzing module, which makes analysis to obtain trigger point distance information according to signals sent from the optical signal receiving device;
• the application analysis section comprises a safety analysis module, which controls motion state of the revolving door through a door control device after making analysis on the basis of the trigger point distance information;
• the safety analysis module comprises:
• trigger point danger analysis, which includes:
• first obtaining the trigger point distance information resulted from the trigger point distance analyzing module;
• then comparing the trigger point distance information to information of a pre-set distance of the scan point, and when the trigger point distance is greater than or equal to the pre-set distance of the scan point, the trigger point is a safe trigger point;
• when the trigger point distance is smaller than the pre-set distance of the scan point, the trigger point is a dangerous trigger point and a corresponding control signal will be generated.