JPS5761971A - Ultrasonic substance detector - Google Patents

Ultrasonic substance detector

Info

Publication number
JPS5761971A
JPS5761971A JP13583280A JP13583280A JPS5761971A JP S5761971 A JPS5761971 A JP S5761971A JP 13583280 A JP13583280 A JP 13583280A JP 13583280 A JP13583280 A JP 13583280A JP S5761971 A JPS5761971 A JP S5761971A
Authority
JP
Japan
Prior art keywords
substance
contents
detection
abnormal
steady state
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.)
Granted
Application number
JP13583280A
Other languages
Japanese (ja)
Other versions
JPS6222110B2 (en
Inventor
Motoyoshi Fujita
Setsuo Mitsui
Takesuke Fukazawa
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.)
TDK Corp
Original Assignee
TDK Corp
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 TDK Corp filed Critical TDK Corp
Priority to JP13583280A priority Critical patent/JPS5761971A/en
Publication of JPS5761971A publication Critical patent/JPS5761971A/en
Publication of JPS6222110B2 publication Critical patent/JPS6222110B2/ja
Granted 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
    • G01S15/50—Systems of measurement, based on relative movement of the target
    • G01S15/52—Discriminating between fixed and moving objects or between objects moving at different speeds

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)
  • Radar Systems Or Details Thereof (AREA)

Abstract

PURPOSE:To greatly release the limitation of a reflecting substance at a installing place, by storing the contents of a reflected wave in the steady state into a detector and constantly comparing between the reflected wave and storage contents to recognize the entry of a substance to be detected. CONSTITUTION:A reference pattern of the steady state is stored in a shift register 17 when a prescribed priod of time elapses after the application of a power source, and the detection is possible for a substance. If a shifting abnormal reflected substance enters an ultrasonic wave radiating region, the output of an FF15 which functions as a temporary storage circuit for received signals becomes different from the contents of the reference patterns within a register 17. Then an FF24 is set if no coincidence is obtained through a comparator 18 between the above-mentioned output and contents. With the prescribed times of arrival of such transmission/reception cycle, a terminal Q2 of a universal shift register 25 is roduced to H to actuate a light emitting diode 29, etc. in a detection display output circuit 27. Thus the detection of an abnormal reflecting substance is displayed. In such way, no obstacle exists as long as the substance to be detected is a stationary body such as a column, etc. exists within the ultrasonic wave radiating region. Thus the degree of freedom is increased for the installating place.
JP13583280A 1980-10-01 1980-10-01 Ultrasonic substance detector Granted JPS5761971A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13583280A JPS5761971A (en) 1980-10-01 1980-10-01 Ultrasonic substance detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13583280A JPS5761971A (en) 1980-10-01 1980-10-01 Ultrasonic substance detector

Publications (2)

Publication Number Publication Date
JPS5761971A true JPS5761971A (en) 1982-04-14
JPS6222110B2 JPS6222110B2 (en) 1987-05-15

Family

ID=15160815

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13583280A Granted JPS5761971A (en) 1980-10-01 1980-10-01 Ultrasonic substance detector

Country Status (1)

Country Link
JP (1) JPS5761971A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60133383A (en) * 1983-12-22 1985-07-16 Nissan Motor Co Ltd Obstacle detector for vehicle

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53114397A (en) * 1977-03-14 1978-10-05 Tokai Kagaku Kogyo Kk Supersonic alarm

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53114397A (en) * 1977-03-14 1978-10-05 Tokai Kagaku Kogyo Kk Supersonic alarm

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60133383A (en) * 1983-12-22 1985-07-16 Nissan Motor Co Ltd Obstacle detector for vehicle

Also Published As

Publication number Publication date
JPS6222110B2 (en) 1987-05-15

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