GB1439553A - Method and an apparatus for measuring relative phase shift between two pulse trains - Google Patents

Method and an apparatus for measuring relative phase shift between two pulse trains

Info

Publication number
GB1439553A
GB1439553A GB1501674A GB1501674A GB1439553A GB 1439553 A GB1439553 A GB 1439553A GB 1501674 A GB1501674 A GB 1501674A GB 1501674 A GB1501674 A GB 1501674A GB 1439553 A GB1439553 A GB 1439553A
Authority
GB
United Kingdom
Prior art keywords
pick
cups
arm
pulse trains
ups
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
Application number
GB1501674A
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.)
Sem Sandberg S G
Original Assignee
Sem Sandberg S G
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 Sem Sandberg S G filed Critical Sem Sandberg S G
Publication of GB1439553A publication Critical patent/GB1439553A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents
    • G01R25/08—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents by counting of standard pulses
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P13/00—Indicating or recording presence, absence, or direction, of movement
    • G01P13/02—Indicating direction only, e.g. by weather vane
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/489—Digital circuits therefor
    • 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
    • G01P5/02—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring forces exerted by the fluid on solid bodies, e.g. anemometer
    • G01P5/06—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring forces exerted by the fluid on solid bodies, e.g. anemometer using rotation of vanes
    • G01P5/07—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring forces exerted by the fluid on solid bodies, e.g. anemometer using rotation of vanes with electrical coupling to the indicating device
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Measuring Frequencies, Analyzing Spectra (AREA)
  • Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
  • Measuring Phase Differences (AREA)

Abstract

1439553 Measuring wind velocity and direction S G SEM-SANDBERG 4 April 1974 [16 April 1973] 15016/74 Headings G1A and G1N [Also in Division H3] In an anemometer, a permanent magnet 7 is rotated by cups 21 past a fixed pick-up 4 and a second pick-up (5)' positioned by the vane 18 to generate two trains of pulses of equal but variable frequency dependent on the wind speed and relatively phase displaced depending on the wind direction. The pick-ups may be reed switches or series-connected pairs of coils (10, 11; 8, 9), Fig. 3 (not shown). The skirt 2" rides on balls 20. In another arrangement, Fig. 1(b) (not shown), the magnet is replaced by an arm (6) the pick-ups being switches (4, 5). Photo-electric arrangements. In Fig. 5 the cups rotate a counterbalanced arm carrying light emitting diodes 15', 15" co-operating with photodiodes or photo-transistors 14', 14". Alternatively, the cups may rotate an arm (12), Fig. 4 (not shown), to interrupt U/V paths between emittersensor pairs. The frequency and phase of the pulse trains is measured digitally [Division H3].
GB1501674A 1973-04-16 1974-04-04 Method and an apparatus for measuring relative phase shift between two pulse trains Expired GB1439553A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7305364A SE371894B (en) 1973-04-16 1973-04-16

Publications (1)

Publication Number Publication Date
GB1439553A true GB1439553A (en) 1976-06-16

Family

ID=20317219

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1501674A Expired GB1439553A (en) 1973-04-16 1974-04-04 Method and an apparatus for measuring relative phase shift between two pulse trains

Country Status (5)

Country Link
US (1) USB458010I5 (en)
JP (1) JPS5014378A (en)
DE (1) DE2418328A1 (en)
GB (1) GB1439553A (en)
SE (1) SE371894B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0059585A2 (en) * 1981-03-03 1982-09-08 Caterpillar Inc. Timing angle and speed measurement of shafts
EP0086409A1 (en) * 1982-02-15 1983-08-24 Forschungsgesellschaft Druckmaschinen e.V. Method and device for the high-precision measuring of the phase position and phase shift of two pulse trains
EP0121732A1 (en) * 1983-03-03 1984-10-17 Wild Leitz Ag Process for digital phase measurement
CN116413474A (en) * 2023-06-12 2023-07-11 山东省地质矿产勘查开发局八〇一水文地质工程地质大队(山东省地矿工程勘察院) Pulling force type flow velocity and flow direction detection device and method

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5391052U (en) * 1976-12-25 1978-07-25
WO1980001416A1 (en) * 1979-01-08 1980-07-10 J Hansen A device for metering the angular position of a direction indicator
FR2467405A1 (en) * 1979-10-15 1981-04-17 Majoni Claude Wind direction indicator operating from anemometer - has rotating angular position detector and fixed position sensor with transmitter providing pulse train proportional to wind speed
US4400865A (en) * 1980-07-08 1983-08-30 International Business Machines Corporation Self-aligned metal process for integrated circuit metallization
DE3808977C2 (en) * 1988-03-17 1993-10-07 Matec Mes Und Automatisierungs Device for measuring an angular misalignment
US5231876A (en) * 1991-05-17 1993-08-03 Peet Bros. Company, Inc. Method and apparatus for wind speed and direction measurement

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0059585A2 (en) * 1981-03-03 1982-09-08 Caterpillar Inc. Timing angle and speed measurement of shafts
EP0059585B1 (en) * 1981-03-03 1989-04-05 Caterpillar Inc. Timing angle and speed measurement of shafts
EP0086409A1 (en) * 1982-02-15 1983-08-24 Forschungsgesellschaft Druckmaschinen e.V. Method and device for the high-precision measuring of the phase position and phase shift of two pulse trains
EP0121732A1 (en) * 1983-03-03 1984-10-17 Wild Leitz Ag Process for digital phase measurement
CN116413474A (en) * 2023-06-12 2023-07-11 山东省地质矿产勘查开发局八〇一水文地质工程地质大队(山东省地矿工程勘察院) Pulling force type flow velocity and flow direction detection device and method
CN116413474B (en) * 2023-06-12 2023-09-01 山东省地质矿产勘查开发局八〇一水文地质工程地质大队(山东省地矿工程勘察院) Pulling force type flow velocity and flow direction detection device and method

Also Published As

Publication number Publication date
SE371894B (en) 1974-12-02
DE2418328A1 (en) 1974-10-31
JPS5014378A (en) 1975-02-14
USB458010I5 (en) 1976-03-16

Similar Documents

Publication Publication Date Title
GB1439553A (en) Method and an apparatus for measuring relative phase shift between two pulse trains
GB1528132A (en) Remote measurement systems
US4160199A (en) Line or pattern following system
IL58542A (en) Apparatus for measuring s/n by phase jitter of digital signals
GB1327559A (en) Speed measuring device for motor vehicles
US4673810A (en) Increment sensing with three beam mark detection
DE3171333D1 (en) Evaluation circuit for a digital rotational speed transducer
JPS6423453A (en) Rotation controller for rotary head
GB1453728A (en) Device for detecting degree of opening of a throttle valve
GB1281339A (en) Improvements in the measurements of twist in rotating shafts
JPS552569A (en) Indexing mechanism for works
GB1182027A (en) Improvements in or relating to tachometer circuits
DE69421992D1 (en) Device for optically measuring the speed of rotation of an object
JPS56160658A (en) Magnetic detection system for engine revolution sensor device
JPS5734453A (en) Wheel velocity sensor
JPS5432371A (en) Rotating speed detector
JPS5733358A (en) Vehicle speed sensor
FR2387453A1 (en) Electromagnetic revolution counter for machine tools - has magnetic circuit housed in disc which is mounted on shaft, and has bridge network to generate pulses for comparator
SU662797A1 (en) Device for continuous monitoring of the edge of rolled stock
GB1315442A (en) Tachometers
SU605257A1 (en) Device for measuring magnetic tape speed
GB1326329A (en) Sensing device for measuring the speed of rotation of drilling turbine
SU1422066A1 (en) Device for measuring angular vibrations of motor vehicle wheel
JPS56168562A (en) Digital high-speed tachometer
SU1269029A1 (en) Device for measuring difference of rotational speeds of shafts

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee