GB2223582B - Transducer device - Google Patents

Transducer device

Info

Publication number
GB2223582B
GB2223582B GB8823234A GB8823234A GB2223582B GB 2223582 B GB2223582 B GB 2223582B GB 8823234 A GB8823234 A GB 8823234A GB 8823234 A GB8823234 A GB 8823234A GB 2223582 B GB2223582 B GB 2223582B
Authority
GB
United Kingdom
Prior art keywords
transducer device
transducer
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 - Lifetime
Application number
GB8823234A
Other versions
GB8823234D0 (en
GB2223582A (en
Inventor
John Christopher Greenwood
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.)
STC PLC
Nortel Networks Optical Components Ltd
Original Assignee
STC PLC
Northern Telecom Europe 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 STC PLC, Northern Telecom Europe Ltd filed Critical STC PLC
Priority to GB8823234A priority Critical patent/GB2223582B/en
Publication of GB8823234D0 publication Critical patent/GB8823234D0/en
Publication of GB2223582A publication Critical patent/GB2223582A/en
Application granted granted Critical
Publication of GB2223582B publication Critical patent/GB2223582B/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G01L9/0001—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means
    • G01L9/0008—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means using vibrations
    • G01L9/0019—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means using vibrations of a semiconductive element
    • G01L9/002—Optical excitation or measuring
    • 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
    • G01L9/0001—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means
    • 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
    • G01L9/0001—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means
    • G01L9/0007—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means using photoelectric means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)
GB8823234A 1988-10-04 1988-10-04 Transducer device Expired - Lifetime GB2223582B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8823234A GB2223582B (en) 1988-10-04 1988-10-04 Transducer device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8823234A GB2223582B (en) 1988-10-04 1988-10-04 Transducer device

Publications (3)

Publication Number Publication Date
GB8823234D0 GB8823234D0 (en) 1988-11-09
GB2223582A GB2223582A (en) 1990-04-11
GB2223582B true GB2223582B (en) 1992-06-17

Family

ID=10644668

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8823234A Expired - Lifetime GB2223582B (en) 1988-10-04 1988-10-04 Transducer device

Country Status (1)

Country Link
GB (1) GB2223582B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5338929A (en) * 1992-03-30 1994-08-16 Shell Oil Company Micromachined sensor device using a beam of light with a frequency swept modulated intensity to activate at least two resonance modes of the sensor element
GB2307744B (en) * 1995-12-01 1999-12-01 Solartron Group Ltd Pressure sensor
JP4082907B2 (en) * 2002-01-21 2008-04-30 正喜 江刺 Vibration type pressure sensor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3561832A (en) * 1969-12-05 1971-02-09 Hewlett Packard Co Quartz resonator pressure transducer
US3617780A (en) * 1967-10-26 1971-11-02 Hewlett Packard Co Piezoelectric transducer and method for mounting same
GB2150293A (en) * 1983-11-28 1985-06-26 Quartztronics Inc Resonator pressure transducer
EP0266974A2 (en) * 1986-11-03 1988-05-11 Nortel Networks Corporation Sensor device
GB2200992A (en) * 1987-01-30 1988-08-17 Quartztronics Inc Quartz resonator pressure transducer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3617780A (en) * 1967-10-26 1971-11-02 Hewlett Packard Co Piezoelectric transducer and method for mounting same
US3561832A (en) * 1969-12-05 1971-02-09 Hewlett Packard Co Quartz resonator pressure transducer
GB2150293A (en) * 1983-11-28 1985-06-26 Quartztronics Inc Resonator pressure transducer
EP0266974A2 (en) * 1986-11-03 1988-05-11 Nortel Networks Corporation Sensor device
GB2200992A (en) * 1987-01-30 1988-08-17 Quartztronics Inc Quartz resonator pressure transducer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
GB A 2150293 is equivalent to US4550610 *

Also Published As

Publication number Publication date
GB8823234D0 (en) 1988-11-09
GB2223582A (en) 1990-04-11

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20031004