JPS6413487A - Ultrasonic detector - Google Patents
Ultrasonic detectorInfo
- 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
- circuit
- frequency
- distance
- 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
Links
Landscapes
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
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.
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)
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 |
-
1987
- 1987-07-08 JP JP16858887A patent/JPS6413487A/en active Pending
Cited By (2)
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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