JPS55155277A - Ultrasonic type snow deposition meter - Google Patents
Ultrasonic type snow deposition meterInfo
- Publication number
- JPS55155277A JPS55155277A JP6443079A JP6443079A JPS55155277A JP S55155277 A JPS55155277 A JP S55155277A JP 6443079 A JP6443079 A JP 6443079A JP 6443079 A JP6443079 A JP 6443079A JP S55155277 A JPS55155277 A JP S55155277A
- Authority
- JP
- Japan
- Prior art keywords
- slice level
- level
- reference signal
- counter
- waves
- 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
Links
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
PURPOSE:To automatically perform compensation and enable high-accuracy measurement even if the quality of snow changes, by maintaining the slice level of a comparator at a prescribed ratio to the level of received waves. CONSTITUTION:A snow deposition meter comprises a control section 1 made of a microcomputer, a transmitting section 2, a receiving section 3, a D/A converter 4 and a counter 5. A reference signal 3e is set at the first slice level after tone burst waves are emitted from a tone burst generation circuit 2b. The reference signal is shifted to the second slice level when time corresponding to a prescribed number of waves has elapsed after wave reception. The counted value of the counter 5 is cleared to zero by the control section 1 simultaneously with the shifting to the second slice level. When a prescribed time has elapsed since the shifting of the reference signal 3e to the second slice level, the counted value of the counter 5 is read. The level of the reference signal 3e is slightly increased or decreased depending on the read counted value to cause the slice level to follow up the level of received waves. As a result, the accurate depth of deposited snow can be determined through an output terminal 1a.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54064430A JPS6027387B2 (en) | 1979-05-24 | 1979-05-24 | Ultrasonic snow gauge |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54064430A JPS6027387B2 (en) | 1979-05-24 | 1979-05-24 | Ultrasonic snow gauge |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55155277A true JPS55155277A (en) | 1980-12-03 |
JPS6027387B2 JPS6027387B2 (en) | 1985-06-28 |
Family
ID=13258044
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54064430A Expired JPS6027387B2 (en) | 1979-05-24 | 1979-05-24 | Ultrasonic snow gauge |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6027387B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61194319A (en) * | 1985-02-25 | 1986-08-28 | Fueroo:Kk | Measured value correctness judgement of under-water supersonic wave sand deposit meter |
JPS61207927A (en) * | 1985-03-12 | 1986-09-16 | Fueroo:Kk | Stable measuring method for ultrasonic level instrument |
JPS61207926A (en) * | 1985-03-12 | 1986-09-16 | Fueroo:Kk | Stable measuring method for ultrasonic level instrument |
JPS63154979A (en) * | 1986-12-19 | 1988-06-28 | Matsushita Electric Works Ltd | Ultrasonic snow detector for melting snow |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3296985B2 (en) * | 1996-12-27 | 2002-07-02 | 名古屋電機工業株式会社 | Ultrasonic snow gauge |
-
1979
- 1979-05-24 JP JP54064430A patent/JPS6027387B2/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61194319A (en) * | 1985-02-25 | 1986-08-28 | Fueroo:Kk | Measured value correctness judgement of under-water supersonic wave sand deposit meter |
JPS61207927A (en) * | 1985-03-12 | 1986-09-16 | Fueroo:Kk | Stable measuring method for ultrasonic level instrument |
JPS61207926A (en) * | 1985-03-12 | 1986-09-16 | Fueroo:Kk | Stable measuring method for ultrasonic level instrument |
JPS63154979A (en) * | 1986-12-19 | 1988-06-28 | Matsushita Electric Works Ltd | Ultrasonic snow detector for melting snow |
Also Published As
Publication number | Publication date |
---|---|
JPS6027387B2 (en) | 1985-06-28 |
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