KR940020624A - Noise Canceling Device for Laser Distance Measuring Device - Google Patents

Noise Canceling Device for Laser Distance Measuring Device Download PDF

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Publication number
KR940020624A
KR940020624A KR1019930001677A KR930001677A KR940020624A KR 940020624 A KR940020624 A KR 940020624A KR 1019930001677 A KR1019930001677 A KR 1019930001677A KR 930001677 A KR930001677 A KR 930001677A KR 940020624 A KR940020624 A KR 940020624A
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South Korea
Prior art keywords
threshold voltage
generating
square wave
voltage
noise
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KR1019930001677A
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Korean (ko)
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KR960013681B1 (en
Inventor
김점수
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김광호
삼성전자 주식회사
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Priority to KR1019930001677A priority Critical patent/KR960013681B1/en
Publication of KR940020624A publication Critical patent/KR940020624A/en
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Publication of KR960013681B1 publication Critical patent/KR960013681B1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Radar Systems And Details Thereof (AREA)

Abstract

본 발명은 레이저 거리측정장치의 노이즈 제거회로에 관한 것으로, 레이저 거리측정장치의 반사신호 미분 시에 이의 하강엣지에서 형성되는 테일 노이즈를 제거하기 위한 문턱전압을 발생하는 노이즈제거 문턱전압 발생수단을 구비하여 거리측정 시에 상기 테일노이즈에 의한 오차를 제거하기 위한 것이다.The present invention relates to a noise removing circuit of a laser distance measuring device, and includes a noise removing threshold voltage generating means for generating a threshold voltage for removing tail noise formed at a falling edge thereof upon differential of a reflected signal of a laser distance measuring device. This is to remove the error due to the tail noise during distance measurement.

Description

레이저 거리측정장치의 노이즈 제거장치Noise Canceling Device for Laser Distance Measuring Device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제3도는 본 발명의 레이저 거리측정장치의 블럭도,3 is a block diagram of a laser distance measuring apparatus of the present invention;

제4도는 본 발명의 레이저 거리측정장치의 노이즈 제거회로의 노이즈 제거를 위한 문턱전압 발생수단의 구성도,4 is a configuration diagram of a threshold voltage generating means for removing noise of a noise removing circuit of the laser distance measuring device of the present invention;

제5도는 본 발명의 레이저 거리측정장치의 노이즈 제거회로의 각 신호의 파형도로서,5 is a waveform diagram of each signal of the noise removing circuit of the laser distance measuring apparatus of the present invention.

제5A도는 증폭된 반사신호의 파형도이고,5A is a waveform diagram of an amplified reflected signal,

제5B도는 미분된 반사신호의 파형도이고,5B is a waveform diagram of the differentiated reflected signal,

제5C도는 기준전압과 증폭된 반사신호의 파형도이고,5C is a waveform diagram of a reference voltage and an amplified reflected signal,

제5D도는 비교기의 출력파형도이고,5D is an output waveform diagram of a comparator,

제5E도는 본 발명에 의한 노이즈제거 문턱전압과 미분된 반사신호의 파형도이고,5E is a waveform diagram of a noise canceling threshold voltage and a differentiated reflected signal according to the present invention;

제5F도는 최종출력되는 디지탈 임펄스신호의 파형도.5F is a waveform diagram of a digital impulse signal to be finally output.

Claims (3)

레이저 트리거신호에 의해 레이저 신호를 발사함과 동시에 클럭 계수를 시작하고, 목표물에 의한 반사신호를 검출하고 검출된 신호파형을 미분하여 신호파형의 상스엣지에서 상기 클럭계수를 종료함으로써, 클럭 계수치로 거리를 측정하는 레이저 거리측정장치에 있어서, 상기 검출된 신호파형의 하강 엣지를 포함하는 펄스폭을 가지고, 상기 검출된 신호파형의 상승엣지로부터 소정기간 지현된 구형파를 발생하고 아 구형파에 의해 노이즈제거 문턱전압을 발생하는 노이즈제거 문턱전압 발생수단; 및 상기 노이즈제거 문턱전압을 합성한 문턱전압에 의해 상기 검출된 신호파형의 하강엣지에 대응하는 미분파형을 제거하고 상승엣지에 대응하는 미분파형 만을 상기 클럭계수의 종료 트리거신호를 발생하기 위한 비교수단을 구비한 것을 특징으로 하는 레이저 거리측정장치의 노이즈 제거회로.When the laser signal is fired by the laser trigger signal, the clock count is started, the reflection signal by the target is detected, the detected signal waveform is differentiated, and the clock count is terminated at the upper edge of the signal waveform, thereby providing a distance to the clock count value. A laser distance measuring apparatus for measuring a voltage, comprising: a square wave having a pulse width including a falling edge of the detected signal waveform, and generating a square wave delayed for a predetermined period from the rising edge of the detected signal waveform, Noise removing threshold voltage generating means for generating a voltage; And comparing means for removing the differential waveform corresponding to the falling edge of the detected signal waveform by the threshold voltage obtained by synthesizing the noise removing threshold voltage and generating only the differential waveform corresponding to the rising edge to generate an end trigger signal of the clock coefficient. Noise reduction circuit of the laser distance measuring apparatus characterized in that it comprises a. 제1항에 있어서, 상기 노이즈제거 문턱전압 발생수단은 상기 검출된 신호파형을 적분하여 적분기; 상기 적분된 신호를 소정의 기준전압과 비교하여 구형파를 발생하는 비교기; 및 상기 구형파에 응답하여 노이즈 문턱전압을 발생하는 전류전압변환기를 구비하는 것을 특징으로 하는 레이저 거리측정장치의 노이즈 제거회로.2. The apparatus of claim 1, wherein the noise removing threshold voltage generating means comprises: an integrator by integrating the detected signal waveform; A comparator for generating a square wave by comparing the integrated signal with a predetermined reference voltage; And a current voltage converter for generating a noise threshold voltage in response to the square wave. 제2항에 있어서, 상기 직류전압변환기는 상기 비교기로부터 출력되는 구형파를 증폭하기 위한 트랜지스터; 및 상기 증폭된 구형파와 소정의 기준전압을 이용하여 노이즈제거 문턱전압을 형성하기 위한 저항군을 구비하는 것을 특징으로 하는 레이저 거리측정장치의 노이즈 제거회로.3. The apparatus of claim 2, wherein the DC voltage converter comprises: a transistor for amplifying a square wave output from the comparator; And a resistor group for forming a noise removing threshold voltage using the amplified square wave and a predetermined reference voltage. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930001677A 1993-02-08 1993-02-08 Noiser eleminatorate apparatus for laser distance detecting apparatus KR960013681B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930001677A KR960013681B1 (en) 1993-02-08 1993-02-08 Noiser eleminatorate apparatus for laser distance detecting apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930001677A KR960013681B1 (en) 1993-02-08 1993-02-08 Noiser eleminatorate apparatus for laser distance detecting apparatus

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KR940020624A true KR940020624A (en) 1994-09-16
KR960013681B1 KR960013681B1 (en) 1996-10-10

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190076725A (en) * 2017-12-22 2019-07-02 주식회사 에스오에스랩 Device and method for controlling detection signal of lidar

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101440085B1 (en) * 2013-02-14 2014-09-12 삼성탈레스 주식회사 Apparatus for laser range finder and method for estimating laser range

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190076725A (en) * 2017-12-22 2019-07-02 주식회사 에스오에스랩 Device and method for controlling detection signal of lidar

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