JPS57186135A - Semiconductor pressure transducer - Google Patents

Semiconductor pressure transducer

Info

Publication number
JPS57186135A
JPS57186135A JP7068981A JP7068981A JPS57186135A JP S57186135 A JPS57186135 A JP S57186135A JP 7068981 A JP7068981 A JP 7068981A JP 7068981 A JP7068981 A JP 7068981A JP S57186135 A JPS57186135 A JP S57186135A
Authority
JP
Japan
Prior art keywords
deltavox
gdeltavox
resistances
bridge
operational amplifier
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.)
Pending
Application number
JP7068981A
Other languages
Japanese (ja)
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 JP7068981A priority Critical patent/JPS57186135A/en
Publication of JPS57186135A publication Critical patent/JPS57186135A/en
Pending 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)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

PURPOSE:To improve the uniformity of the subtense sensitivity of a bridge by developing an unbalanced potential, which never varies with ambient temperature, between the terminal point of a series fixed resistance and the middle point of the other couple of gauge resistances of the bridge. CONSTITUTION:A bridge circuit composed of resistances R1-R4 and fixed resistances rp3 and rs3 for compensation generates a constant bias potential deltaVOX. Therefore, the sum of a real pressure output VP and the deltaVOX appears at the output of the bridge circuit. Operational amplifiers Op1 and Op2 impose differential amplification upon the deltaVOX by a factor G to obtain a GdeltaVOX. On the other hand, a -GdeltaVOX is generated through a variable resistor and an operational amplifier Op3 connected to a reference voltage source E0 in parallel, and then added to said GdeltaVOX. Consequently, an operational amplifier Op4 generates a pressure output G'Vp (G'; gain of Op4) which does not contain the deltaVOX.
JP7068981A 1981-05-13 1981-05-13 Semiconductor pressure transducer Pending JPS57186135A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7068981A JPS57186135A (en) 1981-05-13 1981-05-13 Semiconductor pressure transducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7068981A JPS57186135A (en) 1981-05-13 1981-05-13 Semiconductor pressure transducer

Publications (1)

Publication Number Publication Date
JPS57186135A true JPS57186135A (en) 1982-11-16

Family

ID=13438853

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7068981A Pending JPS57186135A (en) 1981-05-13 1981-05-13 Semiconductor pressure transducer

Country Status (1)

Country Link
JP (1) JPS57186135A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6370042U (en) * 1986-10-27 1988-05-11

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5565479A (en) * 1978-11-13 1980-05-16 Toshiba Corp Temperature compensation system for pressure transducer
JPS5649933A (en) * 1979-10-01 1981-05-06 Toshiba Corp Semiconductor pressure detector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5565479A (en) * 1978-11-13 1980-05-16 Toshiba Corp Temperature compensation system for pressure transducer
JPS5649933A (en) * 1979-10-01 1981-05-06 Toshiba Corp Semiconductor pressure detector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6370042U (en) * 1986-10-27 1988-05-11
JPH0530114Y2 (en) * 1986-10-27 1993-08-02

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