Amplification circuit, laser measurement device, and mobile platform

Abstract

An amplification circuit (5), a laser measurement device comprising the amplification circuit (5), and a mobile platform. The amplification circuit (5) comprises an operational amplification module (21) and an adjustment module (22). The adjustment module (22) is located on at least one of a pre-stage circuit, a post-stage circuit or a feedback circuit of the operational amplification module (21),and is used for adjusting the amplification of an input signal of the amplifier (5), so that the amplification circuit (5) enlarges energy of the input signal by using the adjusted amplification, andthen outputs the signal. By means of the amplification circuit (5), the amplification of the amplification circuit (5) can be dynamically adjusted according to the energy of an input signal, so as toavoid the saturation of an operational amplifier.

Description

technical field [0001] The invention relates to the field of circuit technology, in particular to an amplifying circuit, a laser measuring device, and a mobile platform. Background technique [0002] In some electronic devices, such as lidar, it often involves signal collection and amplification processing of the collected signal. However, the energy of the signal collected by lidar usually has a wide range, that is, when the obstacle is close to the lidar, The energy of the signal obtained by the laser radar through the receiving tube is relatively large; when the obstacle is far away from the laser radar, the energy of the signal obtained through the receiving tube is small. When the electrical signal input by the amplifying circuit is too large, it may cause the op amp of the amplifying circuit to be saturated, and the saturation will cause distortion of the output signal, which will affect the distance measurement of the lidar; moreover, it will take a certain amount of ...

AI Technical Summary

Problems solved by technology

When the electrical signal input by the amplifying circuit is too large, it may cause the op amp of the amplifying circuit to be saturated, and the saturation will cause distortion of the output signal, which will affect the distance measurement of the lidar; moreover, it will take a certain amount of time for the lidar to return to normal after saturation , so that the lidar cannot respond continuously and produce measurement blind spots

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