KR960001730A - Ultrasonic distance measuring device and method with reverberation - Google Patents

Ultrasonic distance measuring device and method with reverberation Download PDF

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Publication number
KR960001730A
KR960001730A KR1019940014688A KR19940014688A KR960001730A KR 960001730 A KR960001730 A KR 960001730A KR 1019940014688 A KR1019940014688 A KR 1019940014688A KR 19940014688 A KR19940014688 A KR 19940014688A KR 960001730 A KR960001730 A KR 960001730A
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KR
South Korea
Prior art keywords
ultrasonic
signal
unit
sensor
reverberation sound
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KR1019940014688A
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Korean (ko)
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KR0138212B1 (en
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조덕상
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김주용
현대전자산업 주식회사
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Priority to KR1019940014688A priority Critical patent/KR0138212B1/en
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Publication of KR0138212B1 publication Critical patent/KR0138212B1/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
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/06—Systems determining the position data of a target
    • G01S15/08—Systems for measuring distance only
    • 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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
    • G01S7/52017—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 particularly adapted to short-range imaging
    • G01S7/52077—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 particularly adapted to short-range imaging with means for elimination of unwanted signals, e.g. noise or interference

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

본 발명은 초음파를 이용한 거리측정장치에 있어서, 특히 초음파 발신신호의 종료이후에 발생하는 잔향음을 제거함으로써 최소탐지거리를 측정함을 특징으로하는 잔향음 제거 기능을 갖는 초음파 거리측정장치에 관한 것으로, 종래에는 운전석에서 볼 경우 사이드 백 미러로는 확인이 되지 않는 사각 지대가 있기 때문에 차선 변경등의 경우에 이러한 사각 지대를 보기 위해서는 운전자가 고개를 돌려 확인하여야 함으로써 전방의 위험 상황을 감지 못하여 사고가 발생할 수 있고, 또한 악천후시에는 사이드 백 미러가 잘 보이지 않는 문제점이 있어, 본 발명은 자동차의 후면에 초음파 발신 센서및 수신 센서를 부착하여 이 초음파 센서로 탐지한 거리를 운전자에게 알려주어 후방 사각 지대에 대한 보조 역할을 할 수 있도록 하고, 또한 잔향음 제거 회로부를 초음파 측정장치에 설치하여 초음파 발신시에 발생하는 잔향음을 제거함으로써 초음파 거리 측정장치에서 발생하는 최소 탐지 거리를 감소 시키도록 한다.The present invention relates to an ultrasonic distance measuring device having a reverberation sound removing function, characterized in that the minimum detection distance is measured by removing the reverberation sound generated after the end of the ultrasonic signal. In the driver's seat, there is a blind spot that cannot be checked by the side back mirror. Therefore, in the case of lane change, the driver must turn his head to check the blind spot in order to see the blind spot. In addition, there is a problem that the side back mirror is difficult to see in bad weather, the present invention is to attach the ultrasonic transmitting sensor and receiving sensor to the rear of the vehicle to inform the driver of the distance detected by the ultrasonic sensor to the rear blind spot To serve as an assistant for, and also remove reverberation times By installing the parts of the ultrasonic measuring device by removing the reverberation generated at the time of the ultrasonic wave emitting and to reduce the minimum detection distance generated in the ultrasonic distance measuring device.

Description

잔향음 제거기능을 갖춘 초음파 거리 측정장치 및 방법Ultrasonic distance measuring device and method with reverberation

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제 1도는 자동차 사이드 백미러의 사각지대 예시도.1 is an exemplary view of the blind spot of the vehicle side rearview mirror.

제 2도는 본 발명의 구성도.2 is a block diagram of the present invention.

* 도면의 주요부분에 대한 부호의 설명** Explanation of symbols for the main parts of the drawings *

10 : 제어부 20 : 초음파 발신 클럭부10: control unit 20: ultrasonic transmission clock unit

30 : 초음파 제어 신호부 35 : 예지검출 및 트리거 회로부30: ultrasonic control signal unit 35: predictive detection and trigger circuit unit

40 : 초음파 구동부 50 : 초음파 발신 센서부40: ultrasonic drive unit 50: ultrasonic transmission sensor unit

60 : 대상물체 70 : 초음파 수신부60: object 70: ultrasonic receiver

80 : 잔향음 제거회로부 90 : 초음파 수신신호 처리부80: reverberation sound removing circuit unit 90: ultrasonic receiving signal processing unit

100 : 거리 표시장치 91 : 제 1 증폭부100: distance display device 91: first amplifier

92 : 대역통과 필터부 93 : 제 2 증폭부92 band pass filter 93 second amplifier portion

94 : 검파 회로부 95 : 비교 회로부94: detection circuit section 95: comparison circuit section

96 : 기준시간 동작 회로부 97 : 시간 비교부96: reference time operation circuit portion 97: time comparison unit

98 : 신호조정 및 처리부98: signal adjustment and processing unit

Claims (3)

자동차 충돌방지장치에 있어서, 전체 시스템을 콘트롤하는 제어부(10)와, 초음파는 구동시키는 클럭을 발생하는 초음파 발신 클럭부(20)와, 초음파를 발신 또는 대기 상태로 제어하기 위한 제어신호를 출력하는 초음파 제어 신호부(30)와, 상기 초음파 발신 클럭부(20)에서 발생된 클럭을 초음파 제어 신호에 따라 초음파 발신 클럭부(20)에서 발생된 클럭을 초음파 제어신호에 따라 초음파 구동신호를 출력하는 초음파 구동부(40)와, 초음파 구동부(40)의 구동신호에 따라 초음파를 대상물체에 발신하는 초음파 발신센서(50)와, 대상물체(60)에 반사된 신호를 수신하는 초음파 수신센서(70)와, 초음파 수신센서(70)에서 잔향음을 입력받아 제어부(10)의 제어신호에 따라 위상을 반전하여 초음파 구동부(40)로 출력시켜 초음파 센서(50)를 구동시키는 잔향음 제거회로부(80)와, 반사된 초음파를 수신하는 초음파 수신 센서부(70)로부터 입력된 수신 신호를 처리하여 제어부에 인가하는 수신신호 처리부(90)와, 수신신호 처리부(90)의 신호를 제어부(10)에서 신호처리하여 거리를 표시하는 거리표시장치(100)로 구성함을 특징으로하는 잔향음 제거 기능을 갖는 초음파 거리측정장치.In the vehicle collision avoidance apparatus, a control unit 10 for controlling the entire system, an ultrasonic transmission clock unit 20 for generating a clock to drive the ultrasonic waves, and outputs a control signal for controlling the ultrasonic waves in the transmission or standby state The ultrasonic control signal unit 30 and the clock generated by the ultrasonic transmission clock unit 20 output the ultrasonic driving signal based on the ultrasonic control signal based on the ultrasonic control signal based on the ultrasonic control signal. Ultrasonic drive unit 40, the ultrasonic transmission sensor 50 for transmitting ultrasonic waves to the target object in accordance with the drive signal of the ultrasonic drive unit 40, and the ultrasonic receiving sensor 70 for receiving the signal reflected on the target object 60 And, after receiving the reverberation sound from the ultrasonic receiving sensor 70, the reverberation sound removing circuit for driving the ultrasonic sensor 50 by inverting the phase according to the control signal of the controller 10 to output to the ultrasonic driver 40 80, a reception signal processing unit 90 for processing the received signal input from the ultrasonic reception sensor unit 70 for receiving the reflected ultrasonic wave and applying the signal to the control unit; and a signal from the reception signal processing unit 90 to the control unit 10. Ultrasonic distance measuring device having a reverberation sound removing function, characterized in that consisting of a distance display device 100 to display the distance by the signal processing. 초음파를 발진시키기 위해 초음파 온/오프 결정신호를 온으로 하면 일정 주파수의 구형파가 초음파에 인가되며, 일정시간 발진후 결정신호를 오프로하여 초음파 발진음을 중지하는 제 1 단계(S1)와; 발진직후 생기는 잔향음을 제거하기 위해 초음파 센서의 잔향음을 위상반전시켜 다시 초음파 센서에 인가하고, 기 설정된 시간이 지나 이 신호를 오프 시키는 제 2 단계(S2)와; 물체가 있는 가를 검사하여 물체가 있으면 거리를 표시하고, 없으면 처음단계(S1)를 반복하는 제 3단계(S3)로 순차 동작함을 특징으로 하는 잔향음 제거 기능을 갖는 초음파 거리 측정 방법.A first step (S1) of applying a ultrasonic wave on / off determination signal to oscillate the ultrasonic wave to apply a square wave of a predetermined frequency to the ultrasonic wave, and stopping the ultrasonic oscillation sound by turning off the determination signal after oscillation for a predetermined time; A second step (S2) of reversing the reverberation sound of the ultrasonic sensor in order to remove the reverberation sound generated immediately after the oscillation and applying it to the ultrasonic sensor again, and turning off the signal after a predetermined time; An ultrasonic distance measuring method having a reverberation sound removing function, characterized in that the operation is sequentially performed in a third step (S3) of checking whether an object exists and displaying a distance if an object exists, and repeating the first step (S1) if there is an object. 제1항에 있어서, 상기 초음파 제어 신호부(30)와 잔향음 제거회로부(80)사이에, 초음파를 구동시키는 클럭을 발생하는 초음파 발신 클럭부(20)로 온/오프 신호를 부가하는 초음파 제어신호부(30)의 신호를 인가받아, 온/오프 결정신호가 온에서 오프로 변환되는 폴링에지를 검출하여 일정시간동안 인에이블 신호를 잔향음 제거회로부(80)에 출력하는 에지 검출 및 트리거회로부(35)를 구성함을 특징으로 하는 잔향음 제거기능을 갖는 초음파 거리측정장치.According to claim 1, Ultrasonic control for adding an on / off signal between the ultrasonic control signal unit 30 and the reverberation sound removing circuit unit 80 to the ultrasonic transmission clock unit 20 for generating a clock for driving the ultrasonic waves The edge detection and trigger circuit unit which receives a signal from the signal unit 30 and detects a falling edge at which the on / off decision signal is switched from on to off and outputs an enable signal to the reverberation noise removing circuit unit 80 for a predetermined time. Ultrasonic distance measuring device having a reverberation sound removing function, characterized in that the configuration (35). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940014688A 1994-06-24 1994-06-24 The measuring apparatus and method using ultrasonic KR0138212B1 (en)

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KR1019940014688A KR0138212B1 (en) 1994-06-24 1994-06-24 The measuring apparatus and method using ultrasonic

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KR1019940014688A KR0138212B1 (en) 1994-06-24 1994-06-24 The measuring apparatus and method using ultrasonic

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KR960001730A true KR960001730A (en) 1996-01-25
KR0138212B1 KR0138212B1 (en) 1998-05-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100779772B1 (en) * 2006-04-17 2007-11-27 삼성물산 주식회사 Guide block and construction method for pre-cast member using it

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103697998B (en) * 2013-12-12 2016-08-17 中国计量学院 Multimedium temperature and pressure adjustable Ultrasonic Wave Propagation Character measurement apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100779772B1 (en) * 2006-04-17 2007-11-27 삼성물산 주식회사 Guide block and construction method for pre-cast member using it

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