FR2404224A1 - Analogue and numerical indication of rotational speed - employs alternator driving motor which provides pointer and totaliser drive - Google Patents
Analogue and numerical indication of rotational speed - employs alternator driving motor which provides pointer and totaliser driveInfo
- Publication number
- FR2404224A1 FR2404224A1 FR7728833A FR7728833A FR2404224A1 FR 2404224 A1 FR2404224 A1 FR 2404224A1 FR 7728833 A FR7728833 A FR 7728833A FR 7728833 A FR7728833 A FR 7728833A FR 2404224 A1 FR2404224 A1 FR 2404224A1
- Authority
- FR
- France
- Prior art keywords
- drive
- provides
- pointer
- totaliser
- analogue
- 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
- 238000005259 measurement Methods 0.000 abstract 2
Classifications
-
- 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
- G01P3/49—Devices characterised by the use of electric or magnetic means for measuring angular speed using eddy currents
- G01P3/495—Devices characterised by the use of electric or magnetic means for measuring angular speed using eddy currents where the indicating means responds to forces produced by the eddy currents and the generating magnetic field
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P1/00—Details of instruments
- G01P1/07—Indicating devices, e.g. for remote indication
- G01P1/08—Arrangements of scales, pointers, lamps or acoustic indicators, e.g. in automobile speedometers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Instrument Panels (AREA)
Abstract
An analogue and numerical indication of rotational speed is obtained from a tachometric system utilising a three phase alternator to drive a three phase motor. Motor output provides a pointer drive and a numerical totaliser drive. A three phase alternator (1) coupled (2) to shaft under measurement drives three phase motor (3) autosynchronously. Motor drives measurement magnet (4) which in turn drives a non-magnetic disc (5) whose axle shaft (7) provides drive for a pointer (8) via a spiral spring (6). The pointer provides an indication against a dial (9) while gearing (10, 11) from a shaft (7) provides drive for counter drums (14) for numerical display.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7728833A FR2404224A1 (en) | 1977-09-23 | 1977-09-23 | Analogue and numerical indication of rotational speed - employs alternator driving motor which provides pointer and totaliser drive |
DE19787823595 DE7823595U1 (en) | 1977-09-23 | 1978-08-07 | DEVICE FOR INDEPENDENT SPEED MEASUREMENT WITH ANALOGUE AND NUMERICAL DISPLAY |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7728833A FR2404224A1 (en) | 1977-09-23 | 1977-09-23 | Analogue and numerical indication of rotational speed - employs alternator driving motor which provides pointer and totaliser drive |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2404224A1 true FR2404224A1 (en) | 1979-04-20 |
FR2404224B1 FR2404224B1 (en) | 1981-06-19 |
Family
ID=9195747
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7728833A Granted FR2404224A1 (en) | 1977-09-23 | 1977-09-23 | Analogue and numerical indication of rotational speed - employs alternator driving motor which provides pointer and totaliser drive |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE7823595U1 (en) |
FR (1) | FR2404224A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106671779A (en) * | 2016-12-22 | 2017-05-17 | 滁州市康达叉车零部件制造有限公司 | Automatic zero resetting type forklift gauge head |
CN109458307A (en) * | 2018-12-21 | 2019-03-12 | 沈阳航空航天大学 | A kind of wind energy conversion system pneumatic efficiency and system generating efficiency synchronous measuring apparatus and method |
-
1977
- 1977-09-23 FR FR7728833A patent/FR2404224A1/en active Granted
-
1978
- 1978-08-07 DE DE19787823595 patent/DE7823595U1/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106671779A (en) * | 2016-12-22 | 2017-05-17 | 滁州市康达叉车零部件制造有限公司 | Automatic zero resetting type forklift gauge head |
CN109458307A (en) * | 2018-12-21 | 2019-03-12 | 沈阳航空航天大学 | A kind of wind energy conversion system pneumatic efficiency and system generating efficiency synchronous measuring apparatus and method |
CN109458307B (en) * | 2018-12-21 | 2023-08-08 | 沈阳航空航天大学 | Synchronous measuring device and method for pneumatic efficiency and system power generation efficiency of wind turbine |
Also Published As
Publication number | Publication date |
---|---|
FR2404224B1 (en) | 1981-06-19 |
DE7823595U1 (en) | 1979-02-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property | ||
ST | Notification of lapse |