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Pulse laser echo signal conditioning circuit and pulse laser scanning system

A pulsed laser and echo signal technology, applied in radio wave measurement systems, re-radiation of electromagnetic waves, utilization of re-radiation, etc., can solve the problems of increasing noise, detecting too many flying spots, etc., to improve the measurement distance and distance measurement accuracy. , the best signal-to-noise ratio, the effect of good time jitter error

Active Publication Date: 2018-10-12
MIANYANG SKYEYE LASER TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The gain of the post-stage increases the noise, and there will be more flying spots measured

Method used

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  • Pulse laser echo signal conditioning circuit and pulse laser scanning system
  • Pulse laser echo signal conditioning circuit and pulse laser scanning system
  • Pulse laser echo signal conditioning circuit and pulse laser scanning system

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Embodiment Construction

[0024] The present invention will be described in more detail below in conjunction with the accompanying drawings and embodiments.

[0025] This embodiment proposes a pulsed laser scanning system, please refer to figure 1 , which includes a laser emitting unit 600, an echo signal receiving unit 100, a monitoring signal receiving unit 500, a monitoring signal conditioning unit 400, a callback signal conditioning unit 200, and a laser pulse timing unit 300. The pulse laser of the laser emitting unit 600 The transmission signal is transmitted to the callback signal conditioning unit 200 and the laser pulse timing unit 300 through the monitoring signal receiving unit 500 and the monitoring signal conditioning unit 400 in sequence, and the pulsed laser light emitted by the laser transmitting unit 600 is reflected and transmitted to the echo signal receiving unit unit 100 , the pulsed laser echo signal output by the echo signal receiving unit 100 is transmitted to the callback signa...

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Abstract

The invention discloses a pulse laser echo signal conditioning circuit comprising a saturation signal detection and self-reset unit which is used for outputting the level signal of the lock state whenthe width and the amplitude of the pulse laser echo signal reach the preset value and outputting the level signal of the reset state when input of the next pulse laser transmitting signal is ended; atime attenuation control signal generation unit which is used for generating the control signal of which the attenuation factor is M=4pix(txc)2 according to the output signal of the saturation signaldetection and self-reset unit; an adjustable attenuator unit which is used for attenuating the amplitude of the pulse laser echo signal; an impedance conversion unit which is used for performing impedance matching of the input end and the output end; and an amplitude limiting amplifier unit which is used for converting the inputted analog signal into the digital signal to be outputted. The optimal signal-to-noise ratio can be acquired, and the post stage signal attenuation ratio is adjustable so as to enhance the measurement distance and the distance measurement accuracy.

Description

technical field [0001] The invention relates to laser radar, laser scanner, laser range finder and other equipment, in particular to a pulse laser echo signal conditioning circuit and a pulse laser scanning system. Background technique [0002] The pulsed laser scanner starts timing when it is launched, and uses the near-infrared laser to irradiate the target and then reflects it back, and then converts the optical signal into an electrical signal through the receiving mirror. The time of flying in the air, and then calculate the distance of the target according to the flight time, is currently one of the fastest ranging methods. The transmitting and receiving device is combined with a rotatable mirror. With the rotation of the mirror, the linear array distance measurement can be completed in a very short time. It can be used with aircraft, drones, and vehicles to quickly measure terrain and buildings. It is widely used in geological exploration, earthwork survey, vegetatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/08G01S7/486G01S7/489
CPCG01S7/486G01S7/489G01S17/08
Inventor 李韦廷唐丹潘文武虞静唐海龙王瑜婵
Owner MIANYANG SKYEYE LASER TECH