JPS57160037A - Pressure detection device - Google Patents

Pressure detection device

Info

Publication number
JPS57160037A
JPS57160037A JP4545081A JP4545081A JPS57160037A JP S57160037 A JPS57160037 A JP S57160037A JP 4545081 A JP4545081 A JP 4545081A JP 4545081 A JP4545081 A JP 4545081A JP S57160037 A JPS57160037 A JP S57160037A
Authority
JP
Japan
Prior art keywords
capacitor
turned
bridge circuit
circuit
voltage
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
JP4545081A
Other languages
Japanese (ja)
Other versions
JPH0346771B2 (en
Inventor
Shunji Shiromizu
Ryuzo Noda
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP4545081A priority Critical patent/JPS57160037A/en
Publication of JPS57160037A publication Critical patent/JPS57160037A/en
Publication of JPH0346771B2 publication Critical patent/JPH0346771B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/02—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in ohmic resistance, e.g. of potentiometers, electric circuits therefor, e.g. bridges, amplifiers or signal conditioning
    • G01L9/04—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in ohmic resistance, e.g. of potentiometers, electric circuits therefor, e.g. bridges, amplifiers or signal conditioning of resistance-strain gauges
    • G01L9/045—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in ohmic resistance, e.g. of potentiometers, electric circuits therefor, e.g. bridges, amplifiers or signal conditioning of resistance-strain gauges with electric temperature compensating means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

PURPOSE:To make it possible to perform zero point compensation with easiness and certainty by controlling through a parallel bleeder resistor and capacitor of a full bridge circuit for pressure sensing electric charging and discharging that correspond to the offset voltage in the bridge circuit. CONSTITUTION:Analog switches SA1 and SA2 are turned on and SA3 is turned off by means of control pulse and electric charge that corresponds to offset voltage of a circuit 81 is charged to a capacitor C1 by means of a bleeder resistor that is formed with fixed resistors R1, R2 and variable resistor R3 etc. formed in parallel with a full bridge circuit 81 that is for pressure sensing and driven by an electric power source VBT dependent on temperature. Then the switches SA1 and SA2 are turned off and SA3 on, which discharges the capacitor C1, nullifying offset voltages in the output voltage of the circuit 81 and charging a capacitor C2, and a voltage that corresponds to detected pressure is taken out to carry out zero point temperature compensation with easiness and certainty.
JP4545081A 1981-03-30 1981-03-30 Pressure detection device Granted JPS57160037A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4545081A JPS57160037A (en) 1981-03-30 1981-03-30 Pressure detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4545081A JPS57160037A (en) 1981-03-30 1981-03-30 Pressure detection device

Publications (2)

Publication Number Publication Date
JPS57160037A true JPS57160037A (en) 1982-10-02
JPH0346771B2 JPH0346771B2 (en) 1991-07-17

Family

ID=12719672

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4545081A Granted JPS57160037A (en) 1981-03-30 1981-03-30 Pressure detection device

Country Status (1)

Country Link
JP (1) JPS57160037A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61259134A (en) * 1985-05-14 1986-11-17 Sumitomo Electric Ind Ltd Semiconductive pressure sensor
WO2015133129A1 (en) * 2014-03-05 2015-09-11 株式会社デンソー Physical quantity detector

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61259134A (en) * 1985-05-14 1986-11-17 Sumitomo Electric Ind Ltd Semiconductive pressure sensor
WO2015133129A1 (en) * 2014-03-05 2015-09-11 株式会社デンソー Physical quantity detector
JP2015180854A (en) * 2014-03-05 2015-10-15 株式会社デンソー Physical quantity detector

Also Published As

Publication number Publication date
JPH0346771B2 (en) 1991-07-17

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