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FR2270590A1 - Electric measuring bridge network - varies voltage to compensate for reference voltage variations - Google Patents

Electric measuring bridge network - varies voltage to compensate for reference voltage variations

Info

Publication number
FR2270590A1
FR2270590A1 FR7416174A FR7416174A FR2270590A1 FR 2270590 A1 FR2270590 A1 FR 2270590A1 FR 7416174 A FR7416174 A FR 7416174A FR 7416174 A FR7416174 A FR 7416174A FR 2270590 A1 FR2270590 A1 FR 2270590A1
Authority
FR
France
Prior art keywords
bridge
voltage
resistor
compensate
bridge network
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
FR7416174A
Other languages
French (fr)
Other versions
FR2270590B3 (en
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.)
ABBEY ELECTRONICS AUTOMATION L
Original Assignee
ABBEY ELECTRONICS AUTOMATION L
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 ABBEY ELECTRONICS AUTOMATION L filed Critical ABBEY ELECTRONICS AUTOMATION L
Publication of FR2270590A1 publication Critical patent/FR2270590A1/en
Application granted granted Critical
Publication of FR2270590B3 publication Critical patent/FR2270590B3/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B1/00—Comparing elements, i.e. elements for effecting comparison directly or indirectly between a desired value and existing or anticipated values
    • G05B1/01—Comparing elements, i.e. elements for effecting comparison directly or indirectly between a desired value and existing or anticipated values electric
    • G05B1/02—Comparing elements, i.e. elements for effecting comparison directly or indirectly between a desired value and existing or anticipated values electric for comparing analogue signals
    • G05B1/027—Comparing elements, i.e. elements for effecting comparison directly or indirectly between a desired value and existing or anticipated values electric for comparing analogue signals using impedance bridges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R17/00—Measuring arrangements involving comparison with a reference value, e.g. bridge
    • G01R17/10—AC or DC measuring bridges
    • G01R17/105—AC or DC measuring bridges for measuring impedance or resistance
    • 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
    • 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

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Measuring Fluid Pressure (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

The bridge network has a device designed to modify the effective supply voltage applied to the bridge as a function of the bridge reference resistor variations. The supply voltage is modified so that the sensitivity of the bridge is approximately constant for small variations around the equilibrium point. The bridge has two equal comparison resistors, a resistor to be controlled and the reference resistor. A device controls the difference between the voltage at the common point between the control resistor and one of the comparison resistors and the voltage at the common point between the reference resistor and the other comparison resistor.
FR7416174A 1973-05-15 1974-05-10 Electric measuring bridge network - varies voltage to compensate for reference voltage variations Granted FR2270590A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2313973 1973-05-15

Publications (2)

Publication Number Publication Date
FR2270590A1 true FR2270590A1 (en) 1975-12-05
FR2270590B3 FR2270590B3 (en) 1977-03-11

Family

ID=10190785

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7416174A Granted FR2270590A1 (en) 1973-05-15 1974-05-10 Electric measuring bridge network - varies voltage to compensate for reference voltage variations

Country Status (2)

Country Link
DE (1) DE2423229A1 (en)
FR (1) FR2270590A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2322376A1 (en) * 1975-08-27 1977-03-25 Sippican Corp MEASURING DEVICE INCLUDING A BRIDGE CIRCUIT
FR2362403A1 (en) * 1976-08-16 1978-03-17 Sippican Corp RESISTANCE MEASURING DEVICE INCLUDING AN AUTOMATIC CALIBRATION CIRCUIT
FR2369570A1 (en) * 1976-10-27 1978-05-26 Cil Electronics Ltd DIRECT CURRENT AMPLIFICATION ARRANGEMENT
GB2463068A (en) * 2008-09-02 2010-03-03 Gm Global Tech Operations Inc A method for estimating the temperature in an internal combustion engine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2322376A1 (en) * 1975-08-27 1977-03-25 Sippican Corp MEASURING DEVICE INCLUDING A BRIDGE CIRCUIT
FR2362403A1 (en) * 1976-08-16 1978-03-17 Sippican Corp RESISTANCE MEASURING DEVICE INCLUDING AN AUTOMATIC CALIBRATION CIRCUIT
FR2369570A1 (en) * 1976-10-27 1978-05-26 Cil Electronics Ltd DIRECT CURRENT AMPLIFICATION ARRANGEMENT
GB2463068A (en) * 2008-09-02 2010-03-03 Gm Global Tech Operations Inc A method for estimating the temperature in an internal combustion engine
GB2463068B (en) * 2008-09-02 2012-03-14 Gm Global Tech Operations Inc A method for estimating the temperature in an internal combustion engine

Also Published As

Publication number Publication date
DE2423229A1 (en) 1974-12-05
FR2270590B3 (en) 1977-03-11

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Legal Events

Date Code Title Description
ST Notification of lapse