Based on the company's long-distance lidar, plus a camera or alarm, a virtual electronic fence can be built to realize real-time monitoring and positioning of foreign objects and alarms at all times, and mobilize related security work.In the field of industrial safety, the operation of industrial robots is highly repeatable, but the absolute safety of the robot working area is still not completely guaranteed.Once a foreign object enters the protection zone and guard zone set by the company's lidar, an alarm is immediately triggered to stop the equipment and ensure the safety of the equipment and personnel.