Patent ID: 11862494
Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
Field: Measurement (Instruments)
Classification: CPC H  B  G | IPC B  G  H

Claim 8:
9. A crane monitoring method, comprising:
detecting, by a first detection apparatus, a position of a crane; sending, by the first detection apparatus, a first detection signal when the crane is located above a Front Opening Unified Pod (FOUP) load port of a semiconductor processing device; and sending, by the first detection apparatus, a second detection signal when the crane leaves a space above the FOUP load port;
generating a start control signal by a processing apparatus responsive to receiving the first detection signal, and generating a stop control signal by the processing apparatus responsive to receiving the second detection signal; and
starting, by a second detection apparatus, a detection of whether there is a foreign matter between the crane and the FOUP load port after receiving the start control signal, and stopping, by the second detection apparatus, the detection after receiving the stop control signal,
the crane monitoring method further comprising: generating the start control signal by the processing apparatus and sending the start control signal to the second detection apparatus by the processing apparatus after the processing apparatus continuously receives the first detection signal within a first preset time;
wherein after starting, by the second detection apparatus, the detection of whether there is a foreign matter between the crane and the FOUP load port after receiving the start control signal, and stopping, by the second detection apparatus, the detection after receiving the stop control signal, the crane monitoring method further comprises:
transmitting detection data detected by the second detection apparatus to a main system for storage; and
counting a number of times of starting and stopping of the second detection apparatus, and counting capacity of a semiconductor processing device based on the number of times of starting and stopping of the second detection apparatus.