Internet of things (iot) system and method for determining benchmark coordinates of collaborative robot

An Internet of Things (IoT) system for determining a work situation of a collaborative robot, comprising:

• a service platform, a management platform, and a sensing network platform connected in sequence, wherein the management platform includes:
• a selection module configured to select at least one key moment from a processing cycle of a target collaborative robot;
• the processing cycle being a processing process of the target collaborative robot for a workpiece;
• the key moment being a moment in the processing cycle when the target collaborative robot is stationary;
• a space module configured to establish a collaborative robot space and to establish a key point of the collaborative robot in the collaborative robot space;
• the key point including a point of a joint of the collaborative robot;
• a benchmark module configured to take coordinates of the key point of the target collaborative robot in the collaborative robot space at the key moment in a standard processing situation as benchmark coordinates;
• an acquisition module configured to obtain first coordinates and second coordinates via the sensing network platform;
• the first coordinates being coordinates of the key point of the target collaborative robot in the collaborative robot space at the key moment in a production processing situation and being obtained from the image information;
• the second coordinates being coordinates of the key point of the target collaborative robot in the collaborative robot space at the key moment in the production processing situation and being obtained from a displacement sensor;
• and
• a calculation module configured to:
• determine, based on historical monitoring data collected during multiple processing cycles, a confidence of each of the at least one key moment by a preset approach, the confidence including a first confidence and a second confidence;
• adjust, based on the first confidence and the second confidence of each of the at least one key moment, the key moment;
• and
• monitor the work situation of the target collaborative robot based on a difference between the first coordinates, the second coordinates and the benchmark coordinates of the same key point at the same key moment, and send the work situation to a user platform to display to a user via the service platform.