JPS5624589A - Distance measuring apparatus - Google Patents

Distance measuring apparatus

Info

Publication number
JPS5624589A
JPS5624589A JP10088579A JP10088579A JPS5624589A JP S5624589 A JPS5624589 A JP S5624589A JP 10088579 A JP10088579 A JP 10088579A JP 10088579 A JP10088579 A JP 10088579A JP S5624589 A JPS5624589 A JP S5624589A
Authority
JP
Japan
Prior art keywords
transmitter
receiver
time
distance
waves
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP10088579A
Other languages
Japanese (ja)
Inventor
Toshihiko Kuroda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dentan KK
Original Assignee
Dentan KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dentan KK filed Critical Dentan KK
Priority to JP10088579A priority Critical patent/JPS5624589A/en
Publication of JPS5624589A publication Critical patent/JPS5624589A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • G01S15/10—Systems for measuring distance only using transmission of interrupted, pulse-modulated waves
    • G01S15/18—Systems for measuring distance only using transmission of interrupted, pulse-modulated waves wherein range gates are used

Landscapes

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

Abstract

PURPOSE:To accomplish accurate measurement of the distance between relatively small two objects by receiving the time lag of reflected ultrasonic waves emitted from a transmitter with pulselike intermittent waves produced through shaping of continuous waves. CONSTITUTION:When the time between the pulselike ultrasonic waves 4 is emitted from the transmitter 4 and received with a receiver 9 after reflected from the object 7 at a distance l is expressed by t1 (=2l/ the velocity of ultrasonic wave), the time lag between the timing pulse and the reading signal can be set at t1. In other words, if the transmitter 4 and the receiver 9 are positioned roughly on the same plane while separated 1m from the object 7, the ultrasonic wave from the transmitter 4 can reach the receiver 9 in about 6msec upon reflection. Therefore, if generated after this time interval so that the intermittent amplification circuit F works only for a fixed time, the reading signal permits the sensing of the area within about 1m of the transmitter 4, thereby assuring accurate measurement of the short distance between relatively small objects.
JP10088579A 1979-08-08 1979-08-08 Distance measuring apparatus Pending JPS5624589A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10088579A JPS5624589A (en) 1979-08-08 1979-08-08 Distance measuring apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10088579A JPS5624589A (en) 1979-08-08 1979-08-08 Distance measuring apparatus

Publications (1)

Publication Number Publication Date
JPS5624589A true JPS5624589A (en) 1981-03-09

Family

ID=14285774

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10088579A Pending JPS5624589A (en) 1979-08-08 1979-08-08 Distance measuring apparatus

Country Status (1)

Country Link
JP (1) JPS5624589A (en)

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