Vibration signal conditioning circuit resistant to shock saturation

Abstract

The invention provides an anti-shock saturation vibration signal conditioning circuit, which is used for being connected with a PE vibration sensor and comprises a differential input charge-to-voltage circuit, a band-pass filter circuit, an integrating circuit, an effective value conversion circuit, a power supply and a 4-20mA conversion circuit, the differential input charge-to-voltage circuit, the band-pass filter circuit, the integrating circuit, the effective value conversion circuit and the 4-20mA conversion circuit are connected in sequence; the power supply is respectively connected with the differential input charge-to-voltage circuit, the band-pass filter circuit, the integrating circuit, the effective value conversion circuit and the 4-20mA conversion circuit; the differential input charge-to-voltage circuit is connected to the PE vibration sensor, the 4-20mA conversion circuit is used for outputting a 4-20mA vibration speed current signal, and when a larger impact signal component is input by the sensor, the output signal is unsaturated, so that the detection of the vibration signal component is met.

Description

technical field [0001] The invention relates to an anti-impact saturation vibration signal conditioning circuit. Background technique [0002] Currently, the vibration sensor solution is used, and generally the vibration acceleration voltage signal of the IEPE interface is integrated by an integrator and converted into a speed signal for output. [0003] In many applications of vibration sensors, the detected signals are not only vibration signals, but also shock signals. Sensors that detect vibration, such as piezoelectric vibration sensors with IEPE interfaces, usually have higher sensitivity in the frequency band of shock signals. The shock component of the vibration signal is easy to saturate the output, which is not conducive to the detection of the vibration component signal. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide an anti-shock saturation vibration signal conditioning circuit, which can make the o...

AI Technical Summary

Problems solved by technology

[0003] In many applications of vibration sensors, the detected signals are not only vibration signals, but often accompanied by shock signals. Sensors that detect vibration, such as piezoelectric vibration sensors with IEPE interfaces, usually have higher sensitivity in the frequency band of shock signals. The impact component of the shock component is easy to saturate the output, which is not conducive to the detection of the vibration component signal

Images