JPS6454348A - Measuring method for water in incubation land - Google Patents

Measuring method for water in incubation land

Info

Publication number
JPS6454348A
JPS6454348A JP62212215A JP21221587A JPS6454348A JP S6454348 A JPS6454348 A JP S6454348A JP 62212215 A JP62212215 A JP 62212215A JP 21221587 A JP21221587 A JP 21221587A JP S6454348 A JPS6454348 A JP S6454348A
Authority
JP
Japan
Prior art keywords
incubation
land
sound wave
water
amount
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
Application number
JP62212215A
Other languages
Japanese (ja)
Other versions
JP2532501B2 (en
Inventor
Hiroshi Nakatsuka
Noboru Yamamoto
Susumu Tanaka
Kiyoshi Miura
Senzou Shinohara
Gunji Kawashima
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.)
Shizuoka Prefecture
Takagi Industrial Co Ltd
Original Assignee
Shizuoka Prefecture
Takagi Industrial Co Ltd
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 Shizuoka Prefecture, Takagi Industrial Co Ltd filed Critical Shizuoka Prefecture
Priority to JP62212215A priority Critical patent/JP2532501B2/en
Publication of JPS6454348A publication Critical patent/JPS6454348A/en
Application granted granted Critical
Publication of JP2532501B2 publication Critical patent/JP2532501B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/02809—Concentration of a compound, e.g. measured by a surface mass change
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/02845—Humidity, wetness

Landscapes

  • Hydroponics (AREA)
  • Measuring Volume Flow (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

PURPOSE:To make measurement accurate and speedy by providing a sound source which applies a sound wave to the incubation land and a wave receiving means which receives the sound wave passed through the incubation land, and measuring the amount of water from the propagation speed of the sound wave propagated in the incubation land. CONSTITUTION:Two opposite sides are set as a measurement place in the incubation land 4, a speaker 6 which generates the sound wave S is installed on one side, and a microphone 8 which receives the sound wave S is installed on the other. The microphone 8 converts the sound wave into a received signal Vgamma, which is amplified and waveform-shaped by a reception part 14 and compared by a phase detection part 16 with an oscillation signal VS applied from an amplification part 12 through a control part 18 to generate their phase difference phi. A water detector 20 converts the phase difference phi into a water amount signal VW to obtain the amount of water.
JP62212215A 1987-08-26 1987-08-26 Method of measuring water content in medium Expired - Fee Related JP2532501B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62212215A JP2532501B2 (en) 1987-08-26 1987-08-26 Method of measuring water content in medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62212215A JP2532501B2 (en) 1987-08-26 1987-08-26 Method of measuring water content in medium

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP7123150A Division JP2564774B2 (en) 1995-04-24 1995-04-24 Water content measuring device in culture medium

Publications (2)

Publication Number Publication Date
JPS6454348A true JPS6454348A (en) 1989-03-01
JP2532501B2 JP2532501B2 (en) 1996-09-11

Family

ID=16618842

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62212215A Expired - Fee Related JP2532501B2 (en) 1987-08-26 1987-08-26 Method of measuring water content in medium

Country Status (1)

Country Link
JP (1) JP2532501B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5124961A (en) * 1989-12-28 1992-06-23 Fuji Xerox Co., Ltd. Floating head for use with a recording apparatus of magneto-optical memory device
JPH08101171A (en) * 1995-04-24 1996-04-16 Shizuoka Prefecture Measuring device for water content of culture medium

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4984296A (en) * 1972-12-15 1974-08-13
JPS5866849A (en) * 1981-10-16 1983-04-21 Hazama Gumi Ltd Control method for quality of concrete
JPS61281964A (en) * 1985-06-07 1986-12-12 Iseki & Co Ltd Soil hardness detector of paddy field mobile agricultral machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4984296A (en) * 1972-12-15 1974-08-13
JPS5866849A (en) * 1981-10-16 1983-04-21 Hazama Gumi Ltd Control method for quality of concrete
JPS61281964A (en) * 1985-06-07 1986-12-12 Iseki & Co Ltd Soil hardness detector of paddy field mobile agricultral machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5124961A (en) * 1989-12-28 1992-06-23 Fuji Xerox Co., Ltd. Floating head for use with a recording apparatus of magneto-optical memory device
JPH08101171A (en) * 1995-04-24 1996-04-16 Shizuoka Prefecture Measuring device for water content of culture medium

Also Published As

Publication number Publication date
JP2532501B2 (en) 1996-09-11

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