On-line detection method for mechanical characteristics of metal-enclosed switchgear

The invention discloses an on-line detection method for mechanical characteristics of a metal-enclosed switchgear. The method comprises the following steps: S1, collecting a vibration signal during the operation of a switch cabinet, and collecting the current data of a closing coil during the operation of a circuit breaker; S2, sending the acquired vibration signal and current data to a processingterminal; S3, extracting key current and time information and vibration event change time information; S4, displaying the key current and the time information in a waveform form, and displaying the vibration event change time information in a waveform form; and S5, judging whether the change appearing time of the key current and the change appearing time of the vibration event are the same, if yes, judging that the switch is operated at the moment, and otherwise, judging that the switch is not operated at the moment. According to the method, multiple sensors are adopted to sense the mechanical characteristics, the si