Device and method for pulse laser ranging
Device and method for pulse laser ranging
 CN 103,018,749 B
 Filed: 12/31/2012
 Issued: 06/10/2015
 Est. Priority Date: 12/31/2012
 Status: Active Grant
First Claim
1. a method for pulsed laser ranging, is characterized in that, described method comprises:
 Send inceptive impulse signal, and when the rising edge voltage of described inceptive impulse signal reaches voltage threshold, the record start time;
Receive the former reflected impulse after described inceptive impulse signal reflex;
Described former reflected impulse is carried out first to the N time to amplify, obtain first to N reflected impulse;
Detect and record described first to N reflected impulse corresponding first to N amplitude;
Preferred threshold voltage magnitude is contrasted to N amplitude with first respectively, determines preferred reflected impulse, obtain preferred measurement result according to described preferred reflected impulse;
Described preferred threshold voltage magnitude is preset value;
Described N be greater than 1 positive integer;
Wherein saidly obtain preferred measurement result according to described preferred reflected impulse, comprising;
Detect and record described first first to N termination time when reaching described voltage threshold to the rising edge voltage of N reflected impulse received;
First of correspondence is calculated to N measurement result according to described initial time and described first to N termination time;
From N number of measurement result, select the measurement result corresponding with described preferred reflected impulse, as preferred measurement result.
Chinese PRB Reexamination
Abstract
The invention discloses a device and a method for pulse laser ranging. The method includes: sending out an initial pulse signal, and recording starting time when the rising edge voltage of the initial pulse signal reaches a voltage threshold; receiving an original reflected pulse after reflection of the initial pulse signal; subjecting the original reflected pulse to amplification from the first time to the Nth time to obtain first to Nth reflected pulses; detecting and recording corresponding first o Nth amplitude values of the first to Nth reflected pulses; and comparing an optimal threshold voltage amplitude value with the first o Nth amplitude values respectively to determine an optimal reflected pulse, and obtaining an optimal measurement result according to the optimal reflected pulse, wherein the optimal threshold voltage amplitude value is a preset value, and N refers to positive integers larger than 1. Using the method for pulse laser ranging can guarantee high precision of the measurement result and guarantee highfrequency output of the measurement result as well.

1 Citation
A kind of laser range finder bearing calibration  
Patent #
CN 106,154,279 A
Filed 07/22/2016

Current Assignee

No References
5 Claims

1. a method for pulsed laser ranging, is characterized in that, described method comprises:

Send inceptive impulse signal, and when the rising edge voltage of described inceptive impulse signal reaches voltage threshold, the record start time; Receive the former reflected impulse after described inceptive impulse signal reflex; Described former reflected impulse is carried out first to the N time to amplify, obtain first to N reflected impulse; Detect and record described first to N reflected impulse corresponding first to N amplitude; Preferred threshold voltage magnitude is contrasted to N amplitude with first respectively, determines preferred reflected impulse, obtain preferred measurement result according to described preferred reflected impulse; Described preferred threshold voltage magnitude is preset value; Described N be greater than 1 positive integer; Wherein saidly obtain preferred measurement result according to described preferred reflected impulse, comprising; Detect and record described first first to N termination time when reaching described voltage threshold to the rising edge voltage of N reflected impulse received; First of correspondence is calculated to N measurement result according to described initial time and described first to N termination time; From N number of measurement result, select the measurement result corresponding with described preferred reflected impulse, as preferred measurement result.


2. the method for pulsed laser ranging according to claim 1, is characterized in that, describedly determines preferred reflected impulse, comprising:
Choose the reflected impulse the most close with preferred threshold voltage magnitude as preferred reflected impulse.

3. the method for pulsed laser ranging according to claim 1 or 2, is characterized in that, detects and records described first first to N termination time when reaching described voltage threshold to the rising edge voltage of N reflected impulse received, comprising:
Detect and record described first of the first correspondence got respectively to N timing unit and reach first of described voltage threshold to the N termination time to N reflected impulse rising edge voltage.

4. a device for pulsed laser ranging, is characterized in that, described device comprises:

Inceptive impulse signal transmitter unit, for sending inceptive impulse signal, and when the rising edge voltage of described inceptive impulse signal reaches voltage threshold, the record start time; Former reflected impulse receiving element, for obtaining the former reflected impulse after described inceptive impulse signal reflex; Amplifying unit, amplifying for former reflected impulse being carried out first to the N time, obtaining first to N reflected impulse; Amplitude acquiring unit, detect and record described first to N reflected impulse corresponding first to N amplitude; Select excellent unit, for preferred threshold voltage magnitude is contrasted to N amplitude with described first respectively, choose the reflected impulse the most close with preferred threshold voltage magnitude as preferred reflected impulse, and obtain preferred measurement result according to described preferred reflected impulse; Described preferred threshold voltage magnitude is preset value; Described N be greater than 1 positive integer; Described excellent unit comprises;
repeatedly timing unit, measuring unit and measurement result preferred cell;Described repeatedly timing unit, for obtaining described first to N reflected impulse, detecting and recording described first first to N termination time when reaching described voltage threshold to the rising edge voltage of N reflected impulse received; Described measuring unit, for calculating first of correspondence to N measurement result according to described initial time and described first to N termination time; Described measurement result preferred cell, for selecting the measurement result corresponding with described preferred reflected impulse, as preferred measurement result.


5. the device of pulsed laser ranging according to claim 4, it is characterized in that, described repeatedly timing unit comprises first to N timing unit;
Described first to N timing unit, for obtaining first of described correspondence respectively to N reflected impulse, described first to N timing unit detect and record receive first reach first of described voltage threshold to the N termination time to the rising edge voltage of N reflected impulse.
Specification(s)