Processing method of nuclear-grade canned motor pump rotation speed signals
A technology of speed signal and processing method, applied in general control systems, instruments, computer control, etc.
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[0028] Such as figure 1 As shown, the present invention is a processing method for the rotational speed signal of a nuclear-level shielded pump. The input rotational speed signal of a nuclear-level shielded pump is first subjected to transient voltage suppression and electrostatic protection through a protection circuit to prevent damage to subsequent circuits by external voltage signals. Then the filter circuit performs bandwidth filtering to filter out the frequency signals other than the working frequency of the speed signal; the filtered signal is classified by the speed pulse classification circuit according to the peak value, and then sent to the amplifier circuit for signal amplification, and the speed pulse classification circuit will convert the speed signal The category information is sent to the processing core; the processing core applies different signal instructions to the gain control circuit according to the category of the speed signal to control the amplificat...
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