JPS5477149A - Magnetic body detector - Google Patents
Magnetic body detectorInfo
- Publication number
- JPS5477149A JPS5477149A JP14534377A JP14534377A JPS5477149A JP S5477149 A JPS5477149 A JP S5477149A JP 14534377 A JP14534377 A JP 14534377A JP 14534377 A JP14534377 A JP 14534377A JP S5477149 A JPS5477149 A JP S5477149A
- Authority
- JP
- Japan
- Prior art keywords
- gear
- magnetic
- series
- taken out
- rotational direction
- 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.)
- Granted
Links
Landscapes
- Transmission And Conversion Of Sensor Element Output (AREA)
- Linear Or Angular Velocity Measurement And Their Indicating Devices (AREA)
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
Abstract
PURPOSE: To make it possible to detect not only the r.p.m. of a magnetic gear but also the rotational direction by connecting four magnetic resistive elements in series such that they are arranged in the rotational direction of the magnetic gear.
CONSTITUTION: A positive and negative power source is connected with the both terminals of a circuit of four magnetic resistive elements M1 to M4 which are arranged in parallel and connected in series. The spacing between the first and fourth elements M1 and M4 is made substantially equal to the pitch of a gear 3 and is supplied with a bias magnetic field by a magnet 2. The gear 3 is turned so that the signals from both the first and second output terminals 6 and 8, which lead from the intermediate points between M1 and M2 and M3 and M4, and the earth terminal, which leads from the intermediate point between the M2 and M3, are fed through transistors Tr1 and Tr2 to a comparator 15. The direction of rotation of the gear 3 is detected from the waveform signal which are taken out of an output terminal 13. The r.p.m. of the gear 3 in the forward direction A is taken out of a counter 17.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14534377A JPS5953488B2 (en) | 1977-11-30 | 1977-11-30 | Magnetic body detection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14534377A JPS5953488B2 (en) | 1977-11-30 | 1977-11-30 | Magnetic body detection device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5477149A true JPS5477149A (en) | 1979-06-20 |
JPS5953488B2 JPS5953488B2 (en) | 1984-12-25 |
Family
ID=15382976
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14534377A Expired JPS5953488B2 (en) | 1977-11-30 | 1977-11-30 | Magnetic body detection device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5953488B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58218615A (en) * | 1982-06-15 | 1983-12-19 | Fanuc Ltd | Speed detecting device |
US5869962A (en) * | 1995-04-11 | 1999-02-09 | Nippondenso Co., Ltd. | Magnetic detection apparatus for detecting movement of an object having a nonuniform system of teeth |
-
1977
- 1977-11-30 JP JP14534377A patent/JPS5953488B2/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58218615A (en) * | 1982-06-15 | 1983-12-19 | Fanuc Ltd | Speed detecting device |
JPH0429011B2 (en) * | 1982-06-15 | 1992-05-15 | Fanuc Ltd | |
US5869962A (en) * | 1995-04-11 | 1999-02-09 | Nippondenso Co., Ltd. | Magnetic detection apparatus for detecting movement of an object having a nonuniform system of teeth |
Also Published As
Publication number | Publication date |
---|---|
JPS5953488B2 (en) | 1984-12-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS54103506A (en) | Rotation control device | |
JPS525581A (en) | Voltage detector circuit | |
JPS5739311A (en) | Pulse encoder device having alarm circuit | |
JPS5477149A (en) | Magnetic body detector | |
JPS5376079A (en) | Voltage detecting circuit | |
JPS6416919A (en) | Rotational angle detector | |
JPS5739312A (en) | Pulse encoder device having alarm circuit | |
JPS5269673A (en) | Magnetic signal detecting circuit | |
JPS5681460A (en) | Pulse-detecting circuit | |
JPS5485755A (en) | Rotating angle detector | |
JPS54161372A (en) | Wattmeter | |
HARRISON et al. | Diode-quad bridge circuit means[Patent] | |
JPS5458069A (en) | Magnetic signal detector | |
JPS55114031A (en) | Detector for pulse absence | |
JPS5336426A (en) | Photoelectric converter device | |
JPS5330857A (en) | Signal change detector circuit | |
JPS5234770A (en) | Detection circuit of multiple input maximum value | |
JPS55134827A (en) | Photographed frame number detector of film | |
JPS55130535A (en) | Exposure lamp control circuit of copying apparatus | |
JPS5320543A (en) | Instantaneous cut and lowered voltage detecting circuit for power supply | |
JPS5228361A (en) | Physical quantity detecting circuit | |
JPS51150371A (en) | Time signal detection circuit | |
JPS53129081A (en) | Revolution variation detection system | |
JPS51150942A (en) | Signal detection circuit | |
JPS5438154A (en) | Angle pulse generating circuit of synchro transmitter |