The peak detection technology focuses on the frequency of the impact signal of the imported bearing, so as to effectively separate the impact signal from the general vibration signal.
The signal required for analysis is collected by the acceleration sensor, and the peak value is taken from a selected time interval. The selection of this time interval must be consistent with the frequency band width of the fast Fourier transform (f-transform) of the sampled data for the analysis of specific vibration. If the above bandwidth is defined as ∧., If the general sampling frequency is 2.56 times, the time interval of the peak must be greater than or equal to the reciprocal of the sampling frequency. In this way, the peak value will be obtained in continuous time intervals until the data required for the next processing is obtained. In order to monitor the impact, the signal collected by the acceleration sensor is high pass filtered (greater than lkhz), so that the signal is concentrated in the frequency band where the impact signal exists, and the impact signal and ordinary vibration signal are separated at the same time.
