GB2243221A - Measuring and displaying time varying magnetic phenomena - Google Patents
Measuring and displaying time varying magnetic phenomena Download PDFInfo
- Publication number
- GB2243221A GB2243221A GB9008611A GB9008611A GB2243221A GB 2243221 A GB2243221 A GB 2243221A GB 9008611 A GB9008611 A GB 9008611A GB 9008611 A GB9008611 A GB 9008611A GB 2243221 A GB2243221 A GB 2243221A
- Authority
- GB
- United Kingdom
- Prior art keywords
- time varying
- measuring
- varying magnetic
- magnetic phenomena
- displaying time
- 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.)
- Withdrawn
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
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Measuring Magnetic Variables (AREA)
Abstract
A single apparatus includes a graphical display in the form of a Liquid Crystal Display, Cathode Ray Tube or some such device in order to measure and display the time varying characteristics of magnetic phenomena detected by a suitable and separate transducers. <IMAGE>
Description
AN APPARATUS FOR MEASURING AND DISPLAYING TIMEVARYING
MAGNETIC PHENOMENA
THE PRESENT INVENTION RELATES TO THE MEASUREMENT AND
DISPLAYING OF TIME VARYING MAGNETIC PHENOMENA IN THE GENERAL
EMBODIMENT OF A SINGLE APPARATUS.
Magnetic field strength, Magnetic Flux ano related magnetic phenomena, such as magnetic flux density, can be measured by a variety ot known apparatus.
By means of some output device, such as a an@@@ogue moving coi! meter or digital meter, a value of te p@@perty measured is indicated.
On previous embodiments of such instruments the output has been limited to indicating a single or 1 imteo number of measurements at a particular moment in time.
Concidering such instruments, in the case of what is frequent called a tc. measurement, aa- measurement of a statie, that is non changing, magnet measurement takes place.
The indication relates to the property being measured at that moment in time. allowing for delays witnir tne operation of the instrument.
In the case o what is frequently aesor ihes es an "AC" measurement, a measurement of a repeating oscillating magnetic property takes place. The indication relates to the measurement et that moment to the stat@@ equiva@ent of the
alternating waveform averaged over a @@@ eveles. The measurement gives little indication of the shape of the alternating waveform.
In the case of what is frequently described as a Peak measurement the indication relates to the pignest, or lowest.
reading experienced by an instrument during a given period.
Measurement and displaying time varying magnetic phenomena is feasible by designing a system basec up In individual known apparatus.
The present invention relates t a general embociment of a single apparatus and a separate transducer, to measure and indicate time varying magnetic phenomena.
According to one embodiment of the present invert ion a Hal I effect device forms a transducer. This is connected to an instrument equipped with signal procession e ectronic cuitry compatible with the said transducer together with some form of graphical display such as s l liquio @ crystal graphics display, cathode ray tube or some suor item of prior art.
As the Hall effect device experiences time varying magnetic phenomena. the apparatus will be recorded end di slaved as a graph with a time dependent axis. The data can be recorded and displayed se a contunuity of date @@@@@ @@@ p@@urality of points.
n another embodiment a coil may for@@@ a @@@@@@er connected to a similar apparatus.
Figure 1 is a diagram illustrating one possible embodiment of the present invention.
A transducer is connected to signal processing electronic circuitry . This circuitry is designed to be compatible with the signals produced and required by the transducer and is not of a general form.
The output of the signal processing electrenic circuitry is supplied to an analogue to digital converter which digitises
the signal for the microprocessor to process. This outputs the data to a graphic display iiquid crystal display.
The display shows a graph of magnetic lux density displayed against a time based axis. From this graph, ma magnetic flux density values or other data can be extracted by the operat;D
Claims (2)
- CLAIMS: 1. A single apparatus that is capable of measuring and displaying magnetic phenomena upon a time based display.
- 2. A single apparatus as claimed in (1) where in the time dependent variations in Magnetic Flux Density using a Hall effect flux gate, magneto resistive or other transducer can be measured and displayed.a. A single apparatus as claimed in (1) where in the time depended variations in Magnetic Flux Linkage variations using a search coil as a transducer can be measured and displayed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9008611A GB2243221A (en) | 1990-04-17 | 1990-04-17 | Measuring and displaying time varying magnetic phenomena |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9008611A GB2243221A (en) | 1990-04-17 | 1990-04-17 | Measuring and displaying time varying magnetic phenomena |
Publications (2)
Publication Number | Publication Date |
---|---|
GB9008611D0 GB9008611D0 (en) | 1990-06-13 |
GB2243221A true GB2243221A (en) | 1991-10-23 |
Family
ID=10674537
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9008611A Withdrawn GB2243221A (en) | 1990-04-17 | 1990-04-17 | Measuring and displaying time varying magnetic phenomena |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2243221A (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1200146A (en) * | 1967-08-17 | 1970-07-29 | Friedrich M O Foerster | Measuring magnetic fields |
US3693085A (en) * | 1971-07-15 | 1972-09-19 | Gen Motors Corp | System for calibrated high level current measurement using a magnetic field responsive transistor |
EP0019827A1 (en) * | 1979-05-28 | 1980-12-10 | Siemens Aktiengesellschaft | Arrangement for detecting the field strength of a field generator by means of a Hall generator |
US4769599A (en) * | 1986-03-03 | 1988-09-06 | Geo-Centers, Inc. | Magnetometer with magnetostrictive member of stress variable magnetic permeability |
GB2218817A (en) * | 1987-12-29 | 1989-11-22 | Eaton Corp | Magneto-resistive current sensor |
-
1990
- 1990-04-17 GB GB9008611A patent/GB2243221A/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1200146A (en) * | 1967-08-17 | 1970-07-29 | Friedrich M O Foerster | Measuring magnetic fields |
US3693085A (en) * | 1971-07-15 | 1972-09-19 | Gen Motors Corp | System for calibrated high level current measurement using a magnetic field responsive transistor |
EP0019827A1 (en) * | 1979-05-28 | 1980-12-10 | Siemens Aktiengesellschaft | Arrangement for detecting the field strength of a field generator by means of a Hall generator |
US4769599A (en) * | 1986-03-03 | 1988-09-06 | Geo-Centers, Inc. | Magnetometer with magnetostrictive member of stress variable magnetic permeability |
GB2218817A (en) * | 1987-12-29 | 1989-11-22 | Eaton Corp | Magneto-resistive current sensor |
Also Published As
Publication number | Publication date |
---|---|
GB9008611D0 (en) | 1990-06-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4817448A (en) | Auto zero circuit for flow meter | |
JPS63501342A (en) | High-speed flow nuclear magnetic resonance imaging method and apparatus | |
EP1207402A3 (en) | Magnetic field variation measuring method and magnetic field varation compensating method for MRI apparatus, and MRI apparatus | |
GB2054302A (en) | Digital measurement of analogue quantities | |
GB2243221A (en) | Measuring and displaying time varying magnetic phenomena | |
US3619771A (en) | Method of an apparatus for selecting the optimum test frequency in eddy current testing | |
CA2031751A1 (en) | Inductive transducer and devices for measuring the displacement of a moving member | |
US3534254A (en) | Method for measuring the magnetoelastic coefficient and difference in anisotropy field in ferromagnetic material | |
JP2812703B2 (en) | Apparatus for measuring magnetization characteristics of magnetic thin films | |
EP0650028A2 (en) | Method and apparatus for measurement of thickness of specimens | |
US6621265B2 (en) | Measuring a material property of an electrically conductive object | |
JPS5828543B2 (en) | Oscilloscope sweep circuit | |
SU1686315A1 (en) | Weighing apparatus | |
JPS62106382A (en) | Apparatus for measuring magnetostriction constant of magnetic membrane | |
SU1610240A2 (en) | Digital electromagnetic thickness gauge | |
SU763771A1 (en) | Calibrated specimen for residual magnetization meter | |
SU1048434A1 (en) | Device for measuring ferromagnetic material static magnetic parameters | |
GB1326729A (en) | Temperature measuring apparatus | |
SU834630A1 (en) | Variable magnetic field parameter measuring device | |
SU900227A1 (en) | Device for measuring magnetic field strength | |
SU761965A1 (en) | Permanent magnet residual magnetisation measuring apparatus | |
KR960001091B1 (en) | Method for measuring gauss by nuclear quadrupole resonance | |
SU1469437A1 (en) | Magnetographic flaw detector | |
RU2071062C1 (en) | Oscillograph | |
SU847181A1 (en) | Magnetic texturometer |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |