JPS5520458A - Ultrasonic distance measuring unit - Google Patents
Ultrasonic distance measuring unitInfo
- Publication number
- JPS5520458A JPS5520458A JP9368878A JP9368878A JPS5520458A JP S5520458 A JPS5520458 A JP S5520458A JP 9368878 A JP9368878 A JP 9368878A JP 9368878 A JP9368878 A JP 9368878A JP S5520458 A JPS5520458 A JP S5520458A
- Authority
- JP
- Japan
- Prior art keywords
- generator
- distance
- gate
- circuit
- dependent
- 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
- 230000005540 biological transmission Effects 0.000 abstract 2
- 230000001419 dependent effect Effects 0.000 abstract 2
- 238000005259 measurement Methods 0.000 abstract 1
- 230000036962 time dependent Effects 0.000 abstract 1
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
- G01S7/52004—Means for monitoring or calibrating
- G01S7/52006—Means for monitoring or calibrating with provision for compensating the effects of temperature
-
- 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
- G01S7/52004—Means for monitoring or calibrating
- G01S2007/52014—Means for monitoring or calibrating involving a reference reflector integrated in the sensor or transducer configuration
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 perform a distance measurement without correcting change components of an ultrasonic wave reciprocating time dependent upon sound speed change components after for the change of a medium form, a temperature, etc., by correcting them by the measuring clock pulse frequency. CONSTITUTION:Gate 10 of time reference set circuit 13 corresponding to a fixed distance is opened by an ultrasonic transmission and receiving wave for reflection plate 7 which is provided the fixed distance away from reference ultrasonic reference transmitter and receiver 6 of reference circuit 1, and the counted value of clocks of clock pulse generator 12 passing through this gate 10 and the set clock number of pulse number setting equipment 15 are compared with each other. Generator 12 is controlled through frequency control circuit 18 according to this comparison result, and the clock frequency outputted from generator 12 is controlled correspondingly to the change of a medium form, a temperature, etc. As a result, it is unnecessary that the measured distance of distance display equipment 29 dependent upon the counting of clocks of generator 12 passing through gate 26 which is opened during the ultrasonic transmission and receiving time corresponding to the distance dependent upon measuring circuit 19 is corrected after even if the medium and the environment are changed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9368878A JPS5520458A (en) | 1978-08-02 | 1978-08-02 | Ultrasonic distance measuring unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9368878A JPS5520458A (en) | 1978-08-02 | 1978-08-02 | Ultrasonic distance measuring unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5520458A true JPS5520458A (en) | 1980-02-13 |
Family
ID=14089334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9368878A Pending JPS5520458A (en) | 1978-08-02 | 1978-08-02 | Ultrasonic distance measuring unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5520458A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61139774A (en) * | 1984-12-12 | 1986-06-27 | Tokyo Keiki Co Ltd | Transmission circuit of ultrasonic length measuring machine |
| JP2000266839A (en) * | 1999-03-16 | 2000-09-29 | Kaijo Corp | Calibration method by bar of acoustic sounding machine |
-
1978
- 1978-08-02 JP JP9368878A patent/JPS5520458A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61139774A (en) * | 1984-12-12 | 1986-06-27 | Tokyo Keiki Co Ltd | Transmission circuit of ultrasonic length measuring machine |
| JP2000266839A (en) * | 1999-03-16 | 2000-09-29 | Kaijo Corp | Calibration method by bar of acoustic sounding machine |
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