GB1459248A - Prevention or removal of moisture on glass surfaces - Google Patents

Prevention or removal of moisture on glass surfaces

Info

Publication number
GB1459248A
GB1459248A GB571274A GB571274A GB1459248A GB 1459248 A GB1459248 A GB 1459248A GB 571274 A GB571274 A GB 571274A GB 571274 A GB571274 A GB 571274A GB 1459248 A GB1459248 A GB 1459248A
Authority
GB
United Kingdom
Prior art keywords
electrodes
impedance
moisture
transistor
detecting
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.)
Expired
Application number
GB571274A
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.)
Niles Parts Co Ltd
Central Glass Co Ltd
Original Assignee
Niles Parts Co Ltd
Central Glass 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 Niles Parts Co Ltd, Central Glass Co Ltd filed Critical Niles Parts Co Ltd
Publication of GB1459248A publication Critical patent/GB1459248A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/84—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/048—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance for determining moisture content of the material
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D22/00—Control of humidity
    • G05D22/02—Control of humidity characterised by the use of electric means
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227—Applications
    • H05B1/023—Industrial applications
    • H05B1/0236—Industrial applications for vehicles
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/035—Electrical circuits used in resistive heating apparatus
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Automation & Control Theory (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Control Of Resistance Heating (AREA)
  • Window Of Vehicle (AREA)

Abstract

1459248 De-misting windows CENTRAL GLASS CO Ltd and NILES PARTS CO Ltd 7 Feb 1974 [7 Feb 1973] 05712/74 Heading A4F [Also in Divisions G1, H2 and H5] A system for preventing the condensation of moisture on a glass surface comprises a pair of moisture detecting electrodes mounted on the surface, and a circuit for detecting the variation of the impedance between the electrodes, the detecting circuit including a temperature sensitive diode D which compensates for any temperature dependent variation of the impedance between the electrodes. The glass surface may be a vehicle or building window. An astable multi-vibrator MVC supplies a signal at a frequency between 100 and 1000 H z to a bridge circuit R, R1-R3, the resistance R of which is the impedance between the pair of electrodes. A differential amplifier T 1 , T 2 is connected to the output terminals of the bridge and the diode D maintains the base current to the transistor Ti constant despite ambient temperature variations. When moisture condenses on the glass surface, the impedance between the electrodes decreases so that the amplifier T 1 , T 2 supplies an output to switch on an amplifying transistor T 3 which in turn switches on a transistor T 5 . A relay Ry is therefore energized to enable heating current to be supplied to a conductive heating film or wires mounted on the window or to a warm air device.
GB571274A 1973-02-07 1974-02-07 Prevention or removal of moisture on glass surfaces Expired GB1459248A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1479973A JPS5347131B2 (en) 1973-02-07 1973-02-07

Publications (1)

Publication Number Publication Date
GB1459248A true GB1459248A (en) 1976-12-22

Family

ID=11871085

Family Applications (1)

Application Number Title Priority Date Filing Date
GB571274A Expired GB1459248A (en) 1973-02-07 1974-02-07 Prevention or removal of moisture on glass surfaces

Country Status (6)

Country Link
US (1) US3902040A (en)
JP (1) JPS5347131B2 (en)
BE (1) BE812312A (en)
CA (1) CA993024A (en)
DE (1) DE2405230C3 (en)
GB (1) GB1459248A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2325993A (en) * 1997-06-06 1998-12-09 Bosch Gmbh Robert Controlling a windscreen or window heater using a moisture sensor
GB2419415A (en) * 2004-09-20 2006-04-26 Bioquell Uk Ltd Sterilisation sensor

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2218710B1 (en) * 1973-02-16 1976-04-30 Saint Gobain
FR2268425B1 (en) * 1974-04-19 1977-10-14 Saint Gobain
JPS52127912A (en) * 1976-04-19 1977-10-27 Nippon Sheet Glass Co Ltd Autoononnfogging plate glass
US4092635A (en) * 1976-09-20 1978-05-30 Baxter Travenol Laboratories, Inc. Humidity sensor alarm unit
JPS5535390A (en) * 1978-09-05 1980-03-12 Mita Ind Co Ltd Heater control method for copier
US4260876A (en) * 1978-12-11 1981-04-07 Anthony's Manufacturing Company, Inc. Dew point differential power controller
US4227411A (en) * 1979-09-24 1980-10-14 Rca Corporation Relative humidity measurement
US4479113A (en) * 1982-01-20 1984-10-23 The United States Of America As Represented By The United States Department Of Energy Compensated intruder-detection systems
US4506137A (en) * 1983-02-18 1985-03-19 Meister Jack B Temperature responsive control circuit for electric window de-fogger/deicer heater
GB8431084D0 (en) * 1984-12-10 1985-02-13 British Aerospace Automatic mist preventing system
DE3513157A1 (en) * 1985-04-12 1986-10-16 VEGLA Vereinigte Glaswerke GmbH, 5100 Aachen Method for regulating the temperature of window panes which can be heated electrically
DE3726122C1 (en) * 1987-08-06 1988-12-22 Daimler Benz Ag Method for controlling parameters of indoor air in a motor vehicle with an air conditioning system
JPH035259A (en) * 1989-06-01 1991-01-11 Nippondenso Co Ltd Heating device for window glass
GB9418477D0 (en) * 1994-09-14 1994-11-02 Glaverbel A heated glazing panel and a control circuit for use therewith
DE19524945A1 (en) 1995-07-08 1997-01-09 Cerasiv Gmbh Cutting cutting tool
US5682788A (en) * 1995-07-12 1997-11-04 Netzer; Yishay Differential windshield capacitive moisture sensor
US5801307A (en) * 1995-07-12 1998-09-01 Netzer; Yishay Differential windshield capacitive moisture sensors
CA2170338C (en) * 1996-02-26 2005-06-21 Heinz Zorn Heated mirror
US5852284A (en) * 1997-01-07 1998-12-22 Libbey-Owens-Ford Co. Insulating glass with capacitively coupled heating system
US6144017A (en) * 1997-03-19 2000-11-07 Libbey-Owens-Ford Co. Condensation control system for heated insulating glass units
US5899078A (en) * 1997-03-25 1999-05-04 Peak Energy Systems, Inc. Method and apparatus for reducing energy use by refrigeration door and frame heaters
AU4919300A (en) * 1999-05-20 2000-12-12 Glaverbel An automotive glazing panelwith solar control coating comprising a data transmission window
US7231727B2 (en) * 2001-04-25 2007-06-19 Isgk Co., Ltd. Apparatus and method for removing moisture
JP2010020918A (en) * 2008-07-08 2010-01-28 Nippon Sheet Glass Co Ltd Terminal structure and glass panel with terminal for vehicle
USD612517S1 (en) 2008-08-20 2010-03-23 Anthony, Inc. Door
US8613161B2 (en) * 2008-08-20 2013-12-24 Anthony, Inc. Refrigerator door construction including a laminated package
KR101233012B1 (en) * 2009-12-24 2013-02-13 (주)엘지하우시스 Heatable glass system and control method thereof for preventing dew condensation
DK177557B1 (en) * 2012-04-27 2013-10-14 Sl Holding Kolding Aps Intelligent temperature controlled window
CN103200717A (en) * 2013-03-23 2013-07-10 北京兴科迪科技有限公司 Automatic demister for car window
DE102014201640A1 (en) * 2014-01-30 2015-07-30 BSH Hausgeräte GmbH Temperature measurement on a surface heating for a household appliance
US9629204B2 (en) 2014-03-21 2017-04-18 Teledyne Instruments, Inc. Detection and correction of window moisture condensation
WO2017152370A1 (en) * 2016-03-08 2017-09-14 张舒维 New soil moisture detection device for agricultural production
FR3102636B1 (en) * 2019-10-28 2021-12-03 Commissariat Energie Atomique method of regulating a resistive element intended to defrost and / or demist a support, and the associated device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733607A (en) * 1956-02-07 miller
US2684592A (en) * 1949-04-11 1954-07-27 American Instr Co Inc Automatic temperature-compensated humidity indicator
US2707880A (en) * 1950-02-18 1955-05-10 Honeywell Regulator Co Relative humidity measuring apparatus
GB1228889A (en) * 1968-10-10 1971-04-21
JPS4724681Y1 (en) * 1970-12-18 1972-08-03
US3832527A (en) * 1970-12-18 1974-08-27 Asahi Glass Co Ltd Defogging glass plate
US3696360A (en) * 1971-06-16 1972-10-03 Vapor Corp Impending condensation alarm
JPS4868701U (en) * 1971-12-03 1973-08-31

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2325993A (en) * 1997-06-06 1998-12-09 Bosch Gmbh Robert Controlling a windscreen or window heater using a moisture sensor
GB2419415A (en) * 2004-09-20 2006-04-26 Bioquell Uk Ltd Sterilisation sensor

Also Published As

Publication number Publication date
JPS49105813A (en) 1974-10-07
DE2405230A1 (en) 1974-08-08
US3902040A (en) 1975-08-26
AU6500674A (en) 1975-07-31
BE812312A (en) 1974-07-01
JPS5347131B2 (en) 1978-12-19
CA993024A (en) 1976-07-13
DE2405230C3 (en) 1978-10-05
DE2405230B2 (en) 1978-02-02

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee