GB2354582B - Reduction of systematic noise in electronic systems - Google Patents

Reduction of systematic noise in electronic systems

Info

Publication number
GB2354582B
GB2354582B GB0004792A GB0004792A GB2354582B GB 2354582 B GB2354582 B GB 2354582B GB 0004792 A GB0004792 A GB 0004792A GB 0004792 A GB0004792 A GB 0004792A GB 2354582 B GB2354582 B GB 2354582B
Authority
GB
United Kingdom
Prior art keywords
reduction
electronic systems
systematic noise
systematic
noise
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 - Fee Related
Application number
GB0004792A
Other versions
GB0004792D0 (en
GB2354582A (en
Inventor
Alan C Hulme
Michael Matthews
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.)
Landis and Gyr AG
Siemens Metering Ltd
Landis and Gyr Ltd
Landis and Gyr Stockport Ltd
Original Assignee
Landis and Gyr AG
Siemens Metering Ltd
Landis and Gyr Ltd
Siemens Metering Products 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 Landis and Gyr AG, Siemens Metering Ltd, Landis and Gyr Ltd, Siemens Metering Products Ltd filed Critical Landis and Gyr AG
Publication of GB0004792D0 publication Critical patent/GB0004792D0/en
Priority to EP00962655A priority Critical patent/EP1214564B1/en
Priority to DE60036719T priority patent/DE60036719T2/en
Priority to PCT/GB2000/003518 priority patent/WO2001022040A1/en
Priority to AU74306/00A priority patent/AU7430600A/en
Priority to JP2001525165A priority patent/JP2003510562A/en
Publication of GB2354582A publication Critical patent/GB2354582A/en
Application granted granted Critical
Publication of GB2354582B publication Critical patent/GB2354582B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
    • G01D3/028—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups mitigating undesired influences, e.g. temperature, pressure
    • G01D3/036—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups mitigating undesired influences, e.g. temperature, pressure on measuring arrangements themselves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/667—Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/24—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting acoustical wave
    • G01P5/245—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting acoustical wave by measuring transit time of acoustical waves

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Measuring Volume Flow (AREA)
GB0004792A 1999-09-22 2000-03-01 Reduction of systematic noise in electronic systems Expired - Fee Related GB2354582B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP00962655A EP1214564B1 (en) 1999-09-22 2000-09-11 Reduction of systematic noise in electronic systems
DE60036719T DE60036719T2 (en) 1999-09-22 2000-09-11 Reduction of systematic noise in electronic systems
PCT/GB2000/003518 WO2001022040A1 (en) 1999-09-22 2000-09-11 Reduction of systematic noise in electronic systems
AU74306/00A AU7430600A (en) 1999-09-22 2000-09-11 Reduction of systematic noise in electronic systems
JP2001525165A JP2003510562A (en) 1999-09-22 2000-09-11 Reduction of system noise in electronic systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9922293.7A GB9922293D0 (en) 1999-09-22 1999-09-22 Systematic noise reduction of electronic systems

Publications (3)

Publication Number Publication Date
GB0004792D0 GB0004792D0 (en) 2000-04-19
GB2354582A GB2354582A (en) 2001-03-28
GB2354582B true GB2354582B (en) 2004-03-24

Family

ID=10861305

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB9922293.7A Ceased GB9922293D0 (en) 1999-09-22 1999-09-22 Systematic noise reduction of electronic systems
GB0004792A Expired - Fee Related GB2354582B (en) 1999-09-22 2000-03-01 Reduction of systematic noise in electronic systems

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB9922293.7A Ceased GB9922293D0 (en) 1999-09-22 1999-09-22 Systematic noise reduction of electronic systems

Country Status (1)

Country Link
GB (2) GB9922293D0 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2061510A (en) * 1979-10-19 1981-05-13 Panametrics Ultrasonic flowmeter
JPS6425082A (en) * 1987-07-22 1989-01-27 Mitsubishi Electric Corp Optical radar apparatus
WO1992001957A1 (en) * 1990-07-24 1992-02-06 Nkk Corporation Method and apparatus for underground radar tomography
US5117698A (en) * 1988-12-07 1992-06-02 Joseph Baumoel Pulse train detection in transit time flowmeter
GB2339907A (en) * 1998-07-24 2000-02-09 Inst Francais Du Petrole Measuring the velocity of flow of a fluid stream by determination of the phase lag of the frequency spectrum of received pulses

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1025082A (en) * 1996-07-05 1998-01-27 Mitsubishi Denki Bill Techno Service Kk Detecting device for foreign material within groove in escalator footstep

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2061510A (en) * 1979-10-19 1981-05-13 Panametrics Ultrasonic flowmeter
JPS6425082A (en) * 1987-07-22 1989-01-27 Mitsubishi Electric Corp Optical radar apparatus
US5117698A (en) * 1988-12-07 1992-06-02 Joseph Baumoel Pulse train detection in transit time flowmeter
WO1992001957A1 (en) * 1990-07-24 1992-02-06 Nkk Corporation Method and apparatus for underground radar tomography
GB2339907A (en) * 1998-07-24 2000-02-09 Inst Francais Du Petrole Measuring the velocity of flow of a fluid stream by determination of the phase lag of the frequency spectrum of received pulses

Also Published As

Publication number Publication date
GB0004792D0 (en) 2000-04-19
GB9922293D0 (en) 1999-11-17
GB2354582A (en) 2001-03-28

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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)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20080301

S73 Revocation on comptroller's initiative (section 73/patents act 1977)

Free format text: PATENT REVOKED; PATENT REVOKED UNDER SECTION 73(2) ON 10 JULY 2009