GB1346012A - Indicator display - Google Patents
Indicator displayInfo
- Publication number
- GB1346012A GB1346012A GB1346012DA GB1346012A GB 1346012 A GB1346012 A GB 1346012A GB 1346012D A GB1346012D A GB 1346012DA GB 1346012 A GB1346012 A GB 1346012A
- Authority
- GB
- United Kingdom
- Prior art keywords
- display
- shaft
- dial
- synchro
- window
- 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
- 101100188555 Arabidopsis thaliana OCT6 gene Proteins 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C17/00—Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
- G01C17/36—Repeaters for remote indication of readings of a master compass
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
1346012 Indicating apparatus; compasses ELECTRO MARINE CORP 6 Oct 1972 46198/72 Headings G1F and G1J An indicator display in which the same information is presented in both analogue and digital form comprises a casing 10 having two windows 12, 14 in one wall, a graduated dial 22 having peripheral scale divisions, mounted on a shaft 20 for rotation therewith, with the shaft axis to one side of the window 12 so that only a sector of the dial 22 is visible through the window 12, and a digital display 28 behind the window 14. In the marine compass display shown, the dial 22 is graduated as a compass card which moves relative to a fixed pointer 26, and the display 28 shows the heading in degrees. A heading signal is supplied to a synchro transformer 35, the output of which is amplified to drive a servo motor 36 coupled to the shaft 20 of the dial 22. The rotor of synchro 35 is driven from the shaft 20. To allow for variation correction, a differential synchro (32) Fig. 3, (not shown), controlled by a graduated knob 15 via reduction gearing (34), is provided ahead of the synchro transformer 35. The shaft 20 also drives a digital encoder 40, which may be a rotary switch or an optical encoder having a rotatable input disc carrying alternate opaque and transparent spots which control the light to photo-diodes. Following the encoder 40 is a decoder-driver circuit for the digital display 28. A knob 16 controls the brightness of the display. The display is also applicable to a liquid level gauge, a temperature gauge, a salinity gauge, a cable length measure, or other angular measurement devices.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4619872 | 1972-10-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1346012A true GB1346012A (en) | 1974-02-06 |
Family
ID=10440251
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1346012D Expired GB1346012A (en) | 1972-10-06 | 1972-10-06 | Indicator display |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1346012A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2180934A (en) * | 1985-08-30 | 1987-04-08 | Tokyo Keiki Kk | Course setting apparatus |
GB2184242A (en) * | 1985-11-13 | 1987-06-17 | Mitutoyo Mfg Co Ltd | Electronic measuring device |
WO2008080103A1 (en) * | 2006-12-22 | 2008-07-03 | Johnson Controls Technology Company | Compass with ambient light |
CN114750827A (en) * | 2022-04-21 | 2022-07-15 | 潍柴雷沃重工股份有限公司 | Electric control steering control system and method for harvester and agricultural machine |
-
1972
- 1972-10-06 GB GB1346012D patent/GB1346012A/en not_active Expired
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2180934A (en) * | 1985-08-30 | 1987-04-08 | Tokyo Keiki Kk | Course setting apparatus |
GB2184242A (en) * | 1985-11-13 | 1987-06-17 | Mitutoyo Mfg Co Ltd | Electronic measuring device |
US4711034A (en) * | 1985-11-13 | 1987-12-08 | Mitutoyo Mfg. Co., Ltd. | Electronic measuring device |
GB2184242B (en) * | 1985-11-13 | 1989-11-15 | Mitutoyo Mfg Co Ltd | Electronic measuring device |
WO2008080103A1 (en) * | 2006-12-22 | 2008-07-03 | Johnson Controls Technology Company | Compass with ambient light |
CN114750827A (en) * | 2022-04-21 | 2022-07-15 | 潍柴雷沃重工股份有限公司 | Electric control steering control system and method for harvester and agricultural machine |
CN114750827B (en) * | 2022-04-21 | 2023-09-08 | 潍柴雷沃智慧农业科技股份有限公司 | Electric control steering control system and method for harvester and agricultural machinery |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |