Elevator monitoring system

An elevator monitoring system, including a gateway device, a load weighing device and an elevator controller;

• wherein:
• the elevator controller is configured to collect status information of an elevator car and fault information when an elevator fails;
• the gateway device is configured to obtain the fault information and the status information from the elevator controller;
• the load weighing device monitors the current load value of the elevator car in real time and transmits the current load value to the gateway device;
• the gateway device calculates a minimum reference load value corresponding to each stopping floor level of the elevator car based on the obtained current load value, and updates and records the minimum reference load value in the gateway device in real time;
• and
• based on the fault information and the status information, if the gateway device determines that the current load value is greater than the minimum reference load value, the gateway device will send a warning alarm indicating a passenger is entrapped in the elevator car to a remote server.