A peak hold output system

Abstract

The invention discloses a peak value holding and output system. The peak value holding and output system comprises an amplification module, a peak value holding module, a control module and a discharging module, the amplification module is connected with the peak value holding module, the peak value holding module is connected with external equipment, the control module and the discharging module,the control module is connected with the discharging module, and the amplification module is used for amplifying an input electric signal converted by a photoelectric detector and sending the input electric signal to the peak value holding module; the control module is used for generating a corresponding control signal and sending the corresponding control signal to the discharging module; the discharging module is used for controlling the peak value holding module to conduct peak value holding or discharging resetting; and the peak value holding module is used for following an output signalof the amplification module to generate a peak value holding signal and sending the peak value holding signal to the external equipment, the peak value holding module comprises a first capacitor and asecond capacitor which are connected in parallel, the first capacitor is used for holding the peak value, and the second capacitor is used for reducing a leakage current of the first capacitor, so that the precision of the output signal of the peak value holding and output system is improved.

Description

technical field [0001] The invention belongs to the field of control systems, and in particular relates to a peak hold output system. Background technique [0002] The laser guidance system needs to extract the optical signal from the laser echo for photoelectric conversion, and after signal processing, the position of the relative angle of the target can be calculated, so as to achieve precise strike on the target. In the guidance process, it is necessary to use a laser pulse signal with stable signal wavelength, high monochromaticity, less interference from light and other gases, and high sensitivity. Therefore, narrow laser pulse signals are widely used. The pulse width of this signal is Generally only about 10ns, the frequency is much smaller than ordinary light. [0003] In the laser tracking and guidance system, a four-quadrant photodetector is generally used to extract the optical signal from the laser echo for photoelectric conversion to determine the target orienta...

AI Technical Summary

Problems solved by technology

C selects a capacitor with a small value, which can follow the input signal, but the holding time is very short. The main reason is that the leakage current needs to be considered due to the small capacitance value, and the charge on the holding capacitor is relatively small, due to the existence of the leakage current. , in a short time, the charge is discharged

Therefore, the existing transconductance peak hold circuit either does not respond to narrow pulse signals, or the holding accuracy is poor, and it is difficult to achieve high-precision peak hold of narrow pulse signals

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