JPS6413487A - Ultrasonic detector - Google Patents

Ultrasonic detector

Info

Publication number
JPS6413487A
JPS6413487A JP16858887A JP16858887A JPS6413487A JP S6413487 A JPS6413487 A JP S6413487A JP 16858887 A JP16858887 A JP 16858887A JP 16858887 A JP16858887 A JP 16858887A JP S6413487 A JPS6413487 A JP S6413487A
Authority
JP
Japan
Prior art keywords
signal
ultrasonic wave
distance
circuit
frequency
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
JP16858887A
Other languages
Japanese (ja)
Inventor
Hiroshi Teramoto
Masaki Teshigahara
Fumio Shibata
Original Assignee
Omron Tateisi Electronics Co
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 Omron Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Priority to JP16858887A priority Critical patent/JPS6413487A/en
Publication of JPS6413487A publication Critical patent/JPS6413487A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To take a measurement at a short distance by providing an ultrasonic wave transmitter and a receiver having their sound axes crossing each other at a position of desired distance, and detecting the frequency difference between an ultrasonic wave sent signal which varies periodically and a received signal. CONSTITUTION:The ultrasonic wave transmitter 2 and ultrasonic wave receiver 3 are packaged in a resin case 4 at a specific angle so as to have their sound axes crossing each other in front of a sensor 1 at a short distance. This received signal is amplified by an amplifier and inputted to a frequency difference detecting circuit. A triangular wave signal outputted by a triangular wave generating circuit, on the other hand, is sent to a timing circuit and a data output circuit counts the frequency of an input beat frequency signal for one cycle of a timing pulse and converts the counted value into a signal indicating the distance.
JP16858887A 1987-07-08 1987-07-08 Ultrasonic detector Pending JPS6413487A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16858887A JPS6413487A (en) 1987-07-08 1987-07-08 Ultrasonic detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16858887A JPS6413487A (en) 1987-07-08 1987-07-08 Ultrasonic detector

Publications (1)

Publication Number Publication Date
JPS6413487A true JPS6413487A (en) 1989-01-18

Family

ID=15870841

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16858887A Pending JPS6413487A (en) 1987-07-08 1987-07-08 Ultrasonic detector

Country Status (1)

Country Link
JP (1) JPS6413487A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0389189A (en) * 1989-08-31 1991-04-15 Omron Corp Ultrasonic sensor
JP2002128474A (en) * 2000-10-27 2002-05-09 Furukawa Co Ltd Over-hoisting detecting device for crane

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0389189A (en) * 1989-08-31 1991-04-15 Omron Corp Ultrasonic sensor
JP2002128474A (en) * 2000-10-27 2002-05-09 Furukawa Co Ltd Over-hoisting detecting device for crane

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