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GB2017354A - Control apparatus e.g. for temperature control - Google Patents

Control apparatus e.g. for temperature control

Info

Publication number
GB2017354A
GB2017354A GB7912150A GB7912150A GB2017354A GB 2017354 A GB2017354 A GB 2017354A GB 7912150 A GB7912150 A GB 7912150A GB 7912150 A GB7912150 A GB 7912150A GB 2017354 A GB2017354 A GB 2017354A
Authority
GB
United Kingdom
Prior art keywords
control
output signal
installation
signal
predetermined relationship
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.)
Withdrawn
Application number
GB7912150A
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.)
John Davis and Son Derby Ltd
Original Assignee
John Davis and Son Derby 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 John Davis and Son Derby Ltd filed Critical John Davis and Son Derby Ltd
Priority to GB7912150A priority Critical patent/GB2017354A/en
Publication of GB2017354A publication Critical patent/GB2017354A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1927—Control of temperature characterised by the use of electric means using a plurality of sensors
    • G05D23/193—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces
    • G05D23/1931—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces to control the temperature of one space
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1906—Control of temperature characterised by the use of electric means using an analogue comparing device
    • G05D23/1913—Control of temperature characterised by the use of electric means using an analogue comparing device delivering a series of pulses
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
    • G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Remote Sensing (AREA)
  • Control Of Temperature (AREA)

Abstract

Control apparatus for providing an output signal which is responsive to a predetermined relationship between a flat and a second parameter and which is suitable for controlling the power output of a power supply, e.g. by means of a triac 32, has two sensors 1, 3 for sensing the respective parameters and means such as a bridge circuit for providing a signal representative of a predetermined relationship between the parameters, this signal and a set-point means being connected to the inputs of a comparator 11 which provides the output signal used to control the power output of the power supply and thus, for example, a space heating or refrigerating installation. In its application to a central heating installation, an infra-red radiation sensor 1 and an air temperature sensor 3 are each in the form of a thermistor coated respectively with matt-black paint and gloss white paint. The mark-to-space ratio of the output signal 13 from a general purpose timer/oscillator 12 varies according to the departure of the prevailing temperature conditions from the set-point and is used to control the period of time during which a pump unit for circulating water through the radiators of the installation operates, or to control the heating fuel supply by means of a valve. <IMAGE>
GB7912150A 1978-01-09 1979-04-06 Control apparatus e.g. for temperature control Withdrawn GB2017354A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7912150A GB2017354A (en) 1978-01-09 1979-04-06 Control apparatus e.g. for temperature control

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB78078 1978-01-09
GB7912150A GB2017354A (en) 1978-01-09 1979-04-06 Control apparatus e.g. for temperature control

Publications (1)

Publication Number Publication Date
GB2017354A true GB2017354A (en) 1979-10-03

Family

ID=26236185

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7912150A Withdrawn GB2017354A (en) 1978-01-09 1979-04-06 Control apparatus e.g. for temperature control

Country Status (1)

Country Link
GB (1) GB2017354A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2481482A1 (en) * 1980-04-25 1981-10-30 Colinet Allain Temp. controller for tracking pilot temp. to average two temps. - has transducers in controlled space and pilot connected into bridge circuit for averaging to control heater
EP0096866A3 (en) * 1982-06-11 1985-12-18 Hitachi, Ltd. Photovoltaic-storage battery device
WO1986000179A1 (en) * 1984-04-30 1986-01-03 Arnold Ingemar Magnusson Overheating alarm
EP0250079A1 (en) * 1986-05-02 1987-12-23 Safeway (Australasia) Limited A temperature controller for a waterbed
GB2209232A (en) * 1987-08-28 1989-05-04 Powerbase Electronic Systems L Temperature control
WO2003056907A1 (en) * 2002-01-10 2003-07-17 Infradan Aps Method and arrangement for controlling the temperature in an area of an animal stable

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2481482A1 (en) * 1980-04-25 1981-10-30 Colinet Allain Temp. controller for tracking pilot temp. to average two temps. - has transducers in controlled space and pilot connected into bridge circuit for averaging to control heater
EP0096866A3 (en) * 1982-06-11 1985-12-18 Hitachi, Ltd. Photovoltaic-storage battery device
WO1986000179A1 (en) * 1984-04-30 1986-01-03 Arnold Ingemar Magnusson Overheating alarm
EP0250079A1 (en) * 1986-05-02 1987-12-23 Safeway (Australasia) Limited A temperature controller for a waterbed
GB2209232A (en) * 1987-08-28 1989-05-04 Powerbase Electronic Systems L Temperature control
WO2003056907A1 (en) * 2002-01-10 2003-07-17 Infradan Aps Method and arrangement for controlling the temperature in an area of an animal stable

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)