JPS56124069A - Pulse drive-type ultrasonic distance measuring device - Google Patents
Pulse drive-type ultrasonic distance measuring deviceInfo
- Publication number
- JPS56124069A JPS56124069A JP2779980A JP2779980A JPS56124069A JP S56124069 A JPS56124069 A JP S56124069A JP 2779980 A JP2779980 A JP 2779980A JP 2779980 A JP2779980 A JP 2779980A JP S56124069 A JPS56124069 A JP S56124069A
- Authority
- JP
- Japan
- Prior art keywords
- wave
- pulse
- short
- oscillating
- ultrasonic
- 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
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
- 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
- G01S7/52003—Techniques for enhancing spatial resolution of targets
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
PURPOSE:To enable accurate and stable long-term measurement with a simple structure even over a short distance by driving an oscillating element at a differentially processed pulse of short pulse width or eliminating an unnecessary electric wave-receiving signal with the assistance of NAND circuit. CONSTITUTION:An oscillating output from an oscillation circuit 1 dries an oscillating element 13 in the form of a narrow width pulse coverted by a differentiation circuit consisting of a condenser 11 and a resistance 12. As a result, an ultrasonic pulse of narrow-width ultrasonic pulse synchronized to an oscillating output is transmitted from a wave transmitter 13. This pulse is received by means of a wave receiver 19 after reflecting a target. Because of a short ultrasonic wave existence time, an accurate short-distance measurement is carried out. In the meantime, an oscillating output from this circuit 1 sets FF17 starting time counting and at the same time, closing NAND gate. Consequently, even if a transmitted ultrasonic wave from the wave transmitter 13 is received directly by the wave receiver 19, an output from the gate 16 won't turn to a high level, and FF17 also won't be reset, thus eliminating an unnecessary received wave signal substantially. Accordingly, it is possible to make an accurate, stable measurement for a long period even over a short distance under a simple structure.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2779980A JPS56124069A (en) | 1980-03-05 | 1980-03-05 | Pulse drive-type ultrasonic distance measuring device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2779980A JPS56124069A (en) | 1980-03-05 | 1980-03-05 | Pulse drive-type ultrasonic distance measuring device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56124069A true JPS56124069A (en) | 1981-09-29 |
Family
ID=12231016
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2779980A Pending JPS56124069A (en) | 1980-03-05 | 1980-03-05 | Pulse drive-type ultrasonic distance measuring device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56124069A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS513227A (en) * | 1974-06-27 | 1976-01-12 | Canon Kk | SOTSUKO HOSHIKIKIRIKAEKANONAKAMERA |
-
1980
- 1980-03-05 JP JP2779980A patent/JPS56124069A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS513227A (en) * | 1974-06-27 | 1976-01-12 | Canon Kk | SOTSUKO HOSHIKIKIRIKAEKANONAKAMERA |
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