According to the
elevator diagnosis method and
system based on
functional safety,
functional safety diagnosis is paused in the running stage of an
elevator needing to be quickly responded, a
control system can centralize resources to process related tasks, such as accurate control over
elevator car leveling and timely response to door
machine instructions,
response delay caused by diagnosis program interference is avoided, and the service life of the elevator is prolonged. The probability of accidents caused by untimely response is reduced, and quick and accurate response in a key stage is guaranteed; secondly, by setting the threshold duration of pause function safety diagnosis and overtime forced
recovery diagnosis, long-time non-monitoring in the quick response stage is avoided, and in the normal operation stage of the elevator, diagnosis is recovered and periodically executed, the elevator function is continuously detected, potential safety problems are found and early warned in time, so that maintenance and repair measures are taken, and the safety of the elevator is guaranteed. The response speed and
safety monitoring are balanced, the
safety monitoring effectiveness of the overall function of the elevator is guaranteed, and the
operation safety is improved.