GB844051A - Improvements in or relating to magnetic position indicating devices - Google Patents
Improvements in or relating to magnetic position indicating devicesInfo
- Publication number
- GB844051A GB844051A GB2746655A GB2746655A GB844051A GB 844051 A GB844051 A GB 844051A GB 2746655 A GB2746655 A GB 2746655A GB 2746655 A GB2746655 A GB 2746655A GB 844051 A GB844051 A GB 844051A
- Authority
- GB
- United Kingdom
- Prior art keywords
- detector
- armature
- flux
- gaps
- fluxes
- 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
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
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
- G01D5/22—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils
- G01D5/2208—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils by influencing the self-induction of the coils
- G01D5/2241—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils by influencing the self-induction of the coils by controlling the saturation of a magnetic circuit by means of a movable element, e.g. a magnet
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Rehabilitation Tools (AREA)
Abstract
844,051. Controlled non-linear inductors. ENGLISH ELECTRIC CO. Ltd. Sept. 25, 1956 [Sept. 27, 1955], No. 27466/55. Class 40 (9). [Also in Groups XXXV and XXXVI] A fixed magnetic circuit including air gaps and a constant source of magneto-motive force (eg. permanent magnets) is unbalanced when an armature on a lift cage approaches the gaps. A flux detector comprising saturable reactors responds to the flux change and operates an indicator. In one arrangement, Fig. 1, the fluxes from two permanent magnets 12, 13 normally circulate in the air gaps between a central member 14a and wing-like members 11a, the fluxes being in opposition in limb 11. When the lift approaches from above, an armature 16 unbalances the circuit and the flux detector 10 gives an indication of one polarity. When the two armatures 15, 16 produce similar conditions in the two gaps, the detector gives a zero indication and as armature 16 leaves the gap the detector gives an indication of the opposite polarity. The flux detector 22, Fig. 2, may be arranged in the central limb of a three-limbed core, the permanent magnets 23, 24 producing fluxes in opposition in the central limb. In another arrangement, Fig. 3, a detector 34 forms a junction between two parallel magnetic circuits identified with the magnets 30, 31 and limbs 33a, 33b. The member 32 is common to the two circuits. Only one armature 35 is used in this arrangement. The flux from both magnets tends to flow through the air gap with the least reluctance.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2746655A GB844051A (en) | 1956-09-25 | 1956-09-25 | Improvements in or relating to magnetic position indicating devices |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2746655A GB844051A (en) | 1956-09-25 | 1956-09-25 | Improvements in or relating to magnetic position indicating devices |
Publications (1)
Publication Number | Publication Date |
---|---|
GB844051A true GB844051A (en) | 1960-08-10 |
Family
ID=10260056
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2746655A Expired GB844051A (en) | 1956-09-25 | 1956-09-25 | Improvements in or relating to magnetic position indicating devices |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB844051A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3448376A (en) * | 1964-01-17 | 1969-06-03 | Us Navy | Fundamental frequency ring core flux gate magnetometer |
GB2207510A (en) * | 1987-07-21 | 1989-02-01 | Manchester Lasers | Magnetic sensor |
-
1956
- 1956-09-25 GB GB2746655A patent/GB844051A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3448376A (en) * | 1964-01-17 | 1969-06-03 | Us Navy | Fundamental frequency ring core flux gate magnetometer |
GB2207510A (en) * | 1987-07-21 | 1989-02-01 | Manchester Lasers | Magnetic sensor |
GB2207510B (en) * | 1987-07-21 | 1991-12-18 | Manchester Lasers | Magnetic sensor |
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