JPS56115975A - Snowfall sensor - Google Patents

Snowfall sensor

Info

Publication number
JPS56115975A
JPS56115975A JP1991880A JP1991880A JPS56115975A JP S56115975 A JPS56115975 A JP S56115975A JP 1991880 A JP1991880 A JP 1991880A JP 1991880 A JP1991880 A JP 1991880A JP S56115975 A JPS56115975 A JP S56115975A
Authority
JP
Japan
Prior art keywords
signal
reflected
transmitter
receiver
amplifiers
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
Application number
JP1991880A
Other languages
Japanese (ja)
Inventor
Hiroshi Fukamizu
Takaaki Kotake
Masashi Nakano
Kazuo Mikami
Hiroshi Yokoyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Omron Corp
Original Assignee
Omron Tateisi Electronics Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Omron Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Priority to JP1991880A priority Critical patent/JPS56115975A/en
Publication of JPS56115975A publication Critical patent/JPS56115975A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01W—METEOROLOGY
    • G01W1/00—Meteorology
    • G01W1/14—Rainfall or precipitation gauges

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Atmospheric Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Environmental Sciences (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

PURPOSE:To accurately measure the snowfall amount by a method wherein an ultrasonic wave is radiated, and the reflected wave from the snow surface is converted into an electric signal, which is amplified in a plurality of amplifiers connected in a multistage manner. CONSTITUTION:The microprocessor 3 outputs a signal via an input/output interface 4 to a transmission controlling circuit 2, and the transmitter-receiver 1 radiates an ultrasonic wave toward the road surface. The reflected wave from the road surface is converted into an electric signal by the electrostrictive oscillator of the transmitter- receiver 1 and added to an amplifier 5. After the amplifier 5, amplifiers 6, 7 and 8 are connected. The electric signal from the transmitter-receiver 1 is synthesis of the portion 14 reflected by the snow surface and the portion 15 reflected by the road surface. When said signal is amplified in the amplifiers 5, 6, 7 and 8, the portion 15 is saturated to become a signal waveform 16 of gentle riser and then becomes a signal waveform 17 of sharp riser. The period of time from the radiation of the ultrasonic wave to the reception of the reflected wave is measured by the microprocessor 3 to calculate the thickness of snowfall. Because conventional apparatuses can obtain only the waveform 18, an error Ta appears.
JP1991880A 1980-02-19 1980-02-19 Snowfall sensor Pending JPS56115975A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1991880A JPS56115975A (en) 1980-02-19 1980-02-19 Snowfall sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1991880A JPS56115975A (en) 1980-02-19 1980-02-19 Snowfall sensor

Publications (1)

Publication Number Publication Date
JPS56115975A true JPS56115975A (en) 1981-09-11

Family

ID=12012592

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1991880A Pending JPS56115975A (en) 1980-02-19 1980-02-19 Snowfall sensor

Country Status (1)

Country Link
JP (1) JPS56115975A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10186060A (en) * 1996-12-27 1998-07-14 Nagoya Denki Kogyo Kk Ultrasonic snow meter

Cited By (1)

* Cited by examiner, † Cited by third party
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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