JPS5360293A - Frost detector - Google Patents

Frost detector

Info

Publication number
JPS5360293A
JPS5360293A JP13608176A JP13608176A JPS5360293A JP S5360293 A JPS5360293 A JP S5360293A JP 13608176 A JP13608176 A JP 13608176A JP 13608176 A JP13608176 A JP 13608176A JP S5360293 A JPS5360293 A JP S5360293A
Authority
JP
Japan
Prior art keywords
frost detector
oscillation
detector
frost
piezoelement
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
JP13608176A
Other languages
Japanese (ja)
Other versions
JPS576024B2 (en
Inventor
Toshibumi Kamiyama
Masahito Miyamoto
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP13608176A priority Critical patent/JPS5360293A/en
Priority to CA290,106A priority patent/CA1090441A/en
Priority to US05/847,814 priority patent/US4176524A/en
Priority to DE2750165A priority patent/DE2750165C3/en
Publication of JPS5360293A publication Critical patent/JPS5360293A/en
Publication of JPS576024B2 publication Critical patent/JPS576024B2/ja
Granted 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
    • G01N2291/02845—Humidity, wetness

Landscapes

  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Defrosting Systems (AREA)

Abstract

PURPOSE: To carry out the frost detection with religious exactitude and to effectively operate cooling apparatus, by detecting impedance alteration, accompanied by the oscillation variation of piezoelement, by the oscillation detector.
COPYRIGHT: (C)1978,JPO&Japio
JP13608176A 1976-11-10 1976-11-10 Frost detector Granted JPS5360293A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP13608176A JPS5360293A (en) 1976-11-10 1976-11-10 Frost detector
CA290,106A CA1090441A (en) 1976-11-10 1977-11-02 Frost detector
US05/847,814 US4176524A (en) 1976-11-10 1977-11-02 Frost detector
DE2750165A DE2750165C3 (en) 1976-11-10 1977-11-09 Device for detecting the formation of frost on a surface of a body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13608176A JPS5360293A (en) 1976-11-10 1976-11-10 Frost detector

Publications (2)

Publication Number Publication Date
JPS5360293A true JPS5360293A (en) 1978-05-30
JPS576024B2 JPS576024B2 (en) 1982-02-02

Family

ID=15166788

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13608176A Granted JPS5360293A (en) 1976-11-10 1976-11-10 Frost detector

Country Status (1)

Country Link
JP (1) JPS5360293A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57162557U (en) * 1981-04-07 1982-10-13
JPS6039530A (en) * 1983-07-13 1985-03-01 ラボラトワール・スイス・ド・ルシエルシユ・オルロジエール Piezoelectric contamination detector
JPS6051455U (en) * 1983-09-17 1985-04-11 ティーディーケイ株式会社 powder detector
JPS629288A (en) * 1985-07-04 1987-01-17 ハイドロ−ケベツク System of measuring rainwater by microprocessor with novel removing mechanism
JPS62132148A (en) * 1984-02-27 1987-06-15 ビブロ−メ−タ−　ソシエテ　アノニム Method of detecting possibility of formation of ice and ice alarm device for executing said method and utilization thereof
JPH0225863U (en) * 1988-08-05 1990-02-20
JP2008051707A (en) * 2006-08-25 2008-03-06 Akebono Brake Ind Co Ltd Sensor element and filling sensing device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58179043U (en) * 1982-04-22 1983-11-30 タイガー魔法瓶株式会社 electric pot
JPS5973730A (en) * 1982-10-19 1984-04-26 Matsushita Electric Ind Co Ltd Bath tub with water level detecting device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57162557U (en) * 1981-04-07 1982-10-13
JPS6039530A (en) * 1983-07-13 1985-03-01 ラボラトワール・スイス・ド・ルシエルシユ・オルロジエール Piezoelectric contamination detector
JPS6051455U (en) * 1983-09-17 1985-04-11 ティーディーケイ株式会社 powder detector
JPH0110585Y2 (en) * 1983-09-17 1989-03-27
JPS62132148A (en) * 1984-02-27 1987-06-15 ビブロ−メ−タ−　ソシエテ　アノニム Method of detecting possibility of formation of ice and ice alarm device for executing said method and utilization thereof
JPH0556831B2 (en) * 1984-02-27 1993-08-20 Biburo Meetaa Sa
JPS629288A (en) * 1985-07-04 1987-01-17 ハイドロ−ケベツク System of measuring rainwater by microprocessor with novel removing mechanism
JPH0571915B2 (en) * 1985-07-04 1993-10-08 Hydro Quebec
JPH0225863U (en) * 1988-08-05 1990-02-20
JP2008051707A (en) * 2006-08-25 2008-03-06 Akebono Brake Ind Co Ltd Sensor element and filling sensing device

Also Published As

Publication number Publication date
JPS576024B2 (en) 1982-02-02

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