KR950019771A - Optical distance measuring device using integration and its method - Google Patents

Optical distance measuring device using integration and its method Download PDF

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Publication number
KR950019771A
KR950019771A KR1019930029737A KR930029737A KR950019771A KR 950019771 A KR950019771 A KR 950019771A KR 1019930029737 A KR1019930029737 A KR 1019930029737A KR 930029737 A KR930029737 A KR 930029737A KR 950019771 A KR950019771 A KR 950019771A
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KR
South Korea
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light
voltage
distance
time
signal
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KR1019930029737A
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Korean (ko)
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KR960010565B1 (en
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조정식
임영빈
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김주용
현대전자산업 주식회사
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Priority to KR1019930029737A priority Critical patent/KR960010565B1/en
Priority to US08/345,787 priority patent/US5633706A/en
Priority to CN94113328A priority patent/CN1110398A/en
Publication of KR950019771A publication Critical patent/KR950019771A/en
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Publication of KR960010565B1 publication Critical patent/KR960010565B1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/06—Systems determining position data of a target
    • G01S17/08—Systems determining position data of a target for measuring distance only
    • G01S17/32—Systems determining position data of a target for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
    • G01S17/36—Systems determining position data of a target for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated with phase comparison between the received signal and the contemporaneously transmitted signal

Abstract

본 발명은 광을 이용하여 거리를 측정하는 장치에 있어서, 광을 이용하여 물체와의 거리를 비접촉으로 측정 가능케 함으로써, 각종 거리측정 장치나 자동차의 충돌방지 장치등의 거리측정 장치로 활용할 수 있도록 한 적분을 이용한 광학식 거리측정 장치 및 그 방법에 관한 것으로, 종래의 거리측정 기기들은 대부분 해당하는 길이의 표준측정 장비를 가지고 물체와의 거리를 상대적으로 측정하는 방식을 사용하였다. 그리고 측량기와 같은 일부분에서는 삼각법을 이용하여 거리를 측정하였으므로 측정하고자 하는 거리 만큼의 상대측정 기구가 있거나, 여러개의 측정장비를 사용하여 계산을 하여야 하는 등의 복잡성이 있었고, 특히 자동차등에 장착하여 이동하면서 계속적으로 거리를 측정한다는 것은 블가능한 문제점이 있었다.The present invention provides a device for measuring a distance using light, which can be used as a distance measuring device such as a distance measuring device or a collision avoidance device of a vehicle by allowing a distance from an object to be measured without contact using light. Optical distance measuring apparatus using the integral and a method thereof, the conventional distance measuring apparatus has been used to measure the distance to the object relatively with the standard measuring equipment of the corresponding length. In some parts, such as instrumentation, the distance was measured using a trigonometry, so there was a complexity of measuring a relative measuring instrument as much as the distance to be measured, or using several measuring instruments. The continuous measurement of distance has been a possible problem.

본 발명은 이와같이 종래의 문제점을 감안하여, 광을 목표물을 향하여 발광하고, 목표물에 맞고 반사되어 돌아오는 시간을 측정하여, 이 시간을 거리로 변환함으로써, 비 접촉식으로 물체와의 거리를 측정할 수 있도록 한것이다.In view of the above-described conventional problems, the present invention measures the time when light is emitted toward a target, is reflected by the target, and returns, and the time is converted into a distance, thereby measuring the distance to the object in a non-contact manner. It is to be possible.

Description

적분을 이용한 광학식 거리측정 장치 및 그 방법Optical distance measuring device using integration and its method

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

제1도는 본 발명 적분을 이용한 광학식 거리측정 장치의 구성도.1 is a block diagram of an optical distance measuring apparatus using the integral of the present invention.

Claims (6)

거리측정의 매개체인 광을 발광시키는 발광부(10)와 ; 이 발광부(10)에서 발사된 광이 목표물에 맞고 반사되는 광을 수광하기 위한 수광부(20)와 ; 상기 발광부(10)에서 발광되는 발광신호를 광전 변환하여 광이 이동하는 시간의 시작신호로 하는 신호를 생성하는 트리거부(30)와 ; 이 트리거부(30)에서 생성된 신호를 입력 받아 시스템 전체 동작을 제어 처리하는 제어 및 신호 처리부(40)와 ; 이 제어 및 신호 처리부(40)의 제어를 받아 시간을 전압으로 변환하는 시간/전압변환부(50)와 ; 이 시간/전압 변환부(50)에서 변환된 시간에 대한 전압값을 상기 제어 및 신호 처리부(40)의 제어를 받아 거리로 변환하는 전압/거리변환부(60)로 구성함을 특징으로 하는 적분을 이용한 광학식 거리측정 장치.A light emitting unit 10 for emitting light that is a medium for distance measurement; A light receiving unit 20 for receiving the light emitted from the light emitting unit 10 in response to the target and being reflected; A trigger unit 30 for photoelectrically converting a light emission signal emitted from the light emitting unit 10 to generate a signal which is a start signal of a time at which light is moved; A control and signal processor 40 for receiving a signal generated by the trigger unit 30 to control the entire system operation; A time / voltage converter 50 for converting time into a voltage under the control of the control and signal processor 40; The voltage value for the time converted by the time / voltage converter 50 is converted into a distance under the control of the control and the signal processor 40, the integration characterized in that it comprises a voltage / distance converter 60 Optical distance measuring device using. 제1항에 있어서, 상기 발광부(10)는 발광되는 펄스 레이저 광을 목표물에 집광 시키는 발광 광학계(11)와 ; 광을 발광시키는 발광원인 레이저 다이오드(12)와 ; 이 레이저 다이오드(12)를 순간적으로 고출력의 에너지를 갖는 펄스공으로 발광시키는 레이저 다이오드 구동부(13)를 포함하여 구성함을 특징으로 하는 적분을 이용한 광학식 거리측정 장치.The light emitting unit (10) according to claim 1, further comprising: a light emitting optical system (11) for condensing pulsed laser light emitted on a target; A laser diode 12 which is a light emitting source for emitting light; An optical distance measuring device using integration, comprising a laser diode driver (13) for emitting the laser diode (12) with a pulsed hole having an instantaneous high output energy. 제1항에 있어서, 상기 수광부(20)는 반사된 레이저 광을 효율적으로 수광하기 위해 반사광을 집속하는 수광광학계(21)와 ; 이 수광 광학계(21)를 통해 수광된 광중에서 발광부(10)로부터 발사된 광만을 통과시키고 태양광을 제거하기 위한 적외선 필터(22)와 ; 이 적외선 필터(22)를 통해 수광된 반사광을 전류 및 전압신호로 변환하여 주는 광전환 및 증폭기(23)를 포함하여 구성함을 륵징으로 하는 적분을 이용한 광학식 거리측정 장치.The light receiving unit (20) according to claim 1, further comprising: a light receiving optical system (21) for focusing the reflected light to efficiently receive the reflected laser light; An infrared filter 22 for passing only the light emitted from the light emitting part 10 and removing sunlight from the light received through the light receiving optical system 21; An optical distance measuring device using an integral that includes an optical switching and an amplifier (23) for converting the reflected light received through the infrared filter (22) into current and voltage signals. 제1항에 있어서, 상기 시간/전압변환부(50)는 시간을 전압으로 변환하는 적분기의 입력으로 되는 신호를 만들어 주는 파형정형기(51)와; 이 파형정형기(51)에서 파형 정형된 신호를 입력받아 광이 이동하는 시간만큼 적분하여 시간을 전압으로 변환하여 주는 적분기(52)를 포함하여 구성함을 특징으로 하는 적분을 이용한 광학식 거리측정 장치.2. The apparatus of claim 1, wherein the time / voltage converter (50) comprises: a waveform shaper (51) for making a signal which is an input of an integrator for converting time into a voltage; And an integrator (52) for converting the time into a voltage by integrating the waveform-formed signal from the waveform shaper (51) by the time light travels. 제1항에 있어서, 상기 전압/거리변환부(60)는 반사광이 돌아와서 검지된 시점에서 그 순간의 전압을 포착하여 유지하는 샘플 및 홀더(61)와 ; 이 샘플 및 홀더(61)에서 포착된 전압을 거리계산이 가능하도록 디지탈 값으로 변환하는 아날로그/디지탈 변환기(62)를 포함하여 구성함을 특징으로 하는 적분을 이용한 광학식 거리측정 장치.The voltage / distance converter (60) according to claim 1, further comprising: a sample and holder (61) for capturing and maintaining the voltage at the instant when the reflected light returns and is detected; And an analog-to-digital converter (62) for converting the voltage captured by the sample and the holder (61) into a digital value to enable distance calculation. 시스템을 동작하기 위하여 초기화한후 자기 진단을 하여 정상인가를 판단하는 제1단계(S1)와 ; 정상이 아닌경우 시스템 작동을 중지하는 제2단계(S2)와 ; 정상인 경우 펄스 레이저를 발광시킨후 트리거 신호 및 반사광 신호를 발생하는 제3단계(S3)와 ; 수신된 트리거 신호 및 반사광 신호를 전압으로 변환하기 위해 적분한후, 순간의 전압을 포착하여 유지하는 제4단계(S4)와 ; 이 포착된 전압을 거리계산이 가능하도록 디지탈 값으로 변환시킨후, 변환된 시간에 대한 전압값을 계산하는 제5단계(S5)로 순차 동 작함을 특징으로 하는 적분을 이용한 광학식 거리측정 방법.A first step S1 of initializing to operate the system and performing self-diagnosis to determine whether the system is normal; A second step (S2) of stopping system operation if it is not normal; A third step (S3) of generating a trigger signal and a reflected light signal after emitting a pulsed laser when it is normal; A fourth step S4 of integrating the received trigger signal and the reflected light signal into a voltage, and then capturing and maintaining the instantaneous voltage; And converting the captured voltage into a digital value to enable distance calculation, and then sequentially operating in a fifth step (S5) of calculating the voltage value for the converted time. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930029737A 1993-12-27 1993-12-27 Optical distance measuring device and method used with integration KR960010565B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1019930029737A KR960010565B1 (en) 1993-12-27 1993-12-27 Optical distance measuring device and method used with integration
US08/345,787 US5633706A (en) 1993-12-27 1994-11-22 Optical distance measurement apparatus and method
CN94113328A CN1110398A (en) 1993-12-27 1994-12-27 Optical distance measurement apparatus and method

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Application Number Priority Date Filing Date Title
KR1019930029737A KR960010565B1 (en) 1993-12-27 1993-12-27 Optical distance measuring device and method used with integration

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KR950019771A true KR950019771A (en) 1995-07-24
KR960010565B1 KR960010565B1 (en) 1996-08-02

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