Crane monitoring system and method

A crane monitoring system, comprising:

• a first detection apparatus configured to detect a position of a crane, to send a first detection signal when the crane is located above a Front Opening Unified Pod (FOUP) load port of a semiconductor device, and to send a second detection signal when the crane leaves a space above the FOUP load port;
• a processing apparatus electrically connected to the first detection apparatus, and configured to generate a start control signal responsive to receiving the first detection signal, and to generate a stop control signal responsive to receiving the second detection signal;
• and
• a second detection apparatus electrically connected to the processing apparatus, and configured to start a detection of whether there is a foreign matter between the crane and the FOUP load port after receiving the start control signal, and to stop the detection after receiving the stop control signal.