Lift warning device

The utility model discloses a lift warning device, comprising an infrared distance measuring module, a warning module and a power source module, wherein the infrared distance measuring module is used for measuring the distance between the module and the inner wall of a lift car; the warning module is used for sending an audible and visual alarm signal; the infrared distance measuring module is connected with the warning module; the power source module is respectively connected with the infrared distance measuring module and the warning module. The lift warning device can be without manual intervention in the whole process, and the running state of a lift can be monitored; when a shaft door is opened, the floor data of the lift can be collected, a sensor in a shaft is combined so as to judge whether the lift reaches an appointed floor, if the lift does not reach the appointed floor, an instruction is sent to the warning device which is mounted outside the shaft, an audible and visual alarm is given, and the aim of reminding personnel not to step into the lift shaft is achieved; meanwhile abnormal information is sent to appointed maintenance personnel, and lift faults are removed.