Peak value and over-peak moment tracking detection circuit

Abstract

The invention discloses a peak value and over-peak moment tracking detection circuit which comprises a voltage comparator, a noninverting amplifier, a sampling retention circuit and a driving circuit, wherein the sampling retention circuit comprises a resistor, a voltage follower, a controlled switch and a retention circuit; the voltage follower follows voltage of the retention circuit, namely output voltage of the voltage follower is equal to that of the retention circuit; the voltage comparator compares an output voltage signal of the noninverting amplifier with a voltage signal Uin input by a tracking detection circuit; a comparison result is output through the voltage comparator to control the driving circuit; the driving circuit controls turning on or turning off of the controlled switch. The circuit directly detects and compares a voltage value of the voltage signal Uin instead of processing a waveform of the voltage signal Uin, so that the circuit is in no relation to the waveform of the voltage signal Uin; therefore, introduction of a nonlinear circuit such as a differential circuit is avoided, and the precision and the reliability of the tracking detection circuit are improved.

Description

technical field [0001] The invention relates to the technical field of electronic circuits, in particular to a peak and peak time tracking detection circuit. Background technique [0002] As a basic circuit for detecting the peak value of the voltage signal waveform, the peak voltage detection circuit is essential for nuclear radiation detectors. It is often used in high energy physics and nuclear physics energy spectrum measurement and time spectrum measurement. In addition, this circuit is also used in detectors that measure pressure, acceleration, and magnetic flux. In short, this circuit is generally required when converting physical or chemical quantities into electrical signals. Therefore, the peak voltage detection circuit is widely used in data sampling. In many systems, it is necessary to collect the peak value as the result value for processing. In this process, it is often necessary to obtain an accurate peak time to ensure the accuracy and reliability of the col...

AI Technical Summary

Problems solved by technology

However, the reliability of this circuit not only depends on the stability of the differential circuit, but also depends on the waveform of the detected signal. For some slowly changing signals, it is easy to cause false triggering and seriously affect the measurement results.

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