JPS5676076A - Measuring device for depth of snow cover - Google Patents
Measuring device for depth of snow coverInfo
- Publication number
- JPS5676076A JPS5676076A JP15335779A JP15335779A JPS5676076A JP S5676076 A JPS5676076 A JP S5676076A JP 15335779 A JP15335779 A JP 15335779A JP 15335779 A JP15335779 A JP 15335779A JP S5676076 A JPS5676076 A JP S5676076A
- Authority
- JP
- Japan
- Prior art keywords
- snow
- depth
- wave
- snow cover
- quality
- 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
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
PURPOSE: To measure the exact depth of snow cover by a method wherein the quality of a snow is discriminated based on an amplitude of reflection wave signals and a depth of snow cover is corrected in accordance with the discriminated snow quality.
CONSTITUTION: An ultrasonic wave transmitting and receiving device 1 is installed on the ground and emits an ultrasonic wave to the ground surface and then, the depth of a snow cover is measured based on the time from the emission of the wave to the receiving of its reflection wave. The reflection wave is received by the transmitting and receiving device 1 to be converted into an electronic wave and it is sequentially entered in amplification circuits 5W8. Output signals from the amplification circuits 5W8 are entered in comparators 9W12, in each of which a threshold value is set. A microprocessor 15 discriminates a snow quality from the output of comparators 9W12 based on the preset program and reads correction values from an RAM 17 correspond to a snow quality. And this correction value is added to a measured value read out of a counter 16, thus, the exact depth of the snow cover being measured.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15335779A JPS5676076A (en) | 1979-11-26 | 1979-11-26 | Measuring device for depth of snow cover |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15335779A JPS5676076A (en) | 1979-11-26 | 1979-11-26 | Measuring device for depth of snow cover |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5676076A true JPS5676076A (en) | 1981-06-23 |
Family
ID=15560688
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15335779A Pending JPS5676076A (en) | 1979-11-26 | 1979-11-26 | Measuring device for depth of snow cover |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5676076A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10186060A (en) * | 1996-12-27 | 1998-07-14 | Nagoya Denki Kogyo Kk | Ultrasonic snow meter |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55156882A (en) * | 1979-05-24 | 1980-12-06 | Matsushita Electric Ind Co Ltd | Ultrasonic sensor for snow quality |
-
1979
- 1979-11-26 JP JP15335779A patent/JPS5676076A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55156882A (en) * | 1979-05-24 | 1980-12-06 | Matsushita Electric Ind Co Ltd | Ultrasonic sensor for snow quality |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10186060A (en) * | 1996-12-27 | 1998-07-14 | Nagoya Denki Kogyo Kk | Ultrasonic snow meter |
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