GB1245534A - Improvements in or relating to location systems - Google Patents
Improvements in or relating to location systemsInfo
- Publication number
- GB1245534A GB1245534A GB8996/69A GB899669A GB1245534A GB 1245534 A GB1245534 A GB 1245534A GB 8996/69 A GB8996/69 A GB 8996/69A GB 899669 A GB899669 A GB 899669A GB 1245534 A GB1245534 A GB 1245534A
- Authority
- GB
- United Kingdom
- Prior art keywords
- base
- store
- light
- code
- scanner
- 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
- 238000012544 monitoring process Methods 0.000 abstract 2
- 230000001934 delay Effects 0.000 abstract 1
- 239000003973 paint Substances 0.000 abstract 1
- 230000011664 signaling Effects 0.000 abstract 1
- 238000001429 visible spectrum Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/123—Traffic control systems for road vehicles indicating the position of vehicles, e.g. scheduled vehicles; Managing passenger vehicles circulating according to a fixed timetable, e.g. buses, trains, trams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or trains
- B61L25/04—Indicating or recording train identities
- B61L25/041—Indicating or recording train identities using reflecting tags
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
Abstract
1,245,534. Selective signalling arrangements. MARCONI CO. Ltd. 3 Dec., 1969 [19 Feb., 1969], No. 8996/69. Heading G4H. A system for indicating the location of a vehicle comprises a base 21 carrying a set 23 of light reflecting elements placed at known locations along the vehicle route, the elements of each set being scanned in a vertical direction to obtain an identifiable sequence of light reflections, the vehicle carrying means for scanning the base and means for receiving and storing the corresponding signals. The scanner 2 projects a narrow rectangular beam of light through mask 3 and there are two receivers 6, 7 each arranged by suitable filters to receive only light of first and second frequencies. Each receiver directs the received light on to a photoelectric device 8, 10. The output of device 8 is connected to a code detector 9 and, via delay 15 and gate 14, to store 11. The detector 8 gives an output, when a heading code, e.g. 101, is detected, to open gates 12 and 14. The scanner is pivoted and oscillated by a mechanism 20 to make a vertical scan. The base 21 also carries a set 22 of reflective elements reflecting light of the second frequency, received by receiver 7. This gives rise to a train of electric pulses serving as a clock signal for store 11. The set 22 contains a mark for each mark or space position of set 23. After the first three bits (101) the set 23 on each base is different, defining a particular location along the route. The elements 22 and 23 are painted on the base, which may be a lamp-post, using special wavelength reflective paint. The light used for scanning may be outside the visible spectrum. It may be derived from a laser. A code corresponding to set 23 is stored in store 11 until a new base 21 is scanned. The signal from detector 9 resets the store and delays 15, 16 delay the entry of the new code to ensure that the resetting operation is complete. Means may be provided to prevent store 11 from being repeatedly reset and re-registering the same code when the vehicle is stationary or moving slowly past a base 21. The code stored in store 11 is transmitted back to a monitoring station when the transmitter 24 is keyed by a receiver 25 actuated by an interrogating signal from the monitoring station. The scanner illustrated may be replaced by an octagonal drum scanner.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8996/69A GB1245534A (en) | 1969-02-19 | 1969-02-19 | Improvements in or relating to location systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8996/69A GB1245534A (en) | 1969-02-19 | 1969-02-19 | Improvements in or relating to location systems |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1245534A true GB1245534A (en) | 1971-09-08 |
Family
ID=9863357
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8996/69A Expired GB1245534A (en) | 1969-02-19 | 1969-02-19 | Improvements in or relating to location systems |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1245534A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2140183A (en) * | 1983-04-21 | 1984-11-21 | Walter Sticht | Method and apparatus for operating an assembly line |
GB2206716A (en) * | 1987-07-06 | 1989-01-11 | Gen Electric Plc | Apparatus for monitoring the presence or movement of an object |
GB2244581A (en) * | 1990-06-02 | 1991-12-04 | Solvit Scient Engineers Limite | System to read barcode signs from or on a moving vehicle |
GB2306726A (en) * | 1995-10-17 | 1997-05-07 | Process Computing Ltd | Communication system |
WO2007085224A1 (en) | 2006-01-24 | 2007-08-02 | Thyssenkrupp Transrapid Gmbh | Device for producing position signals for track-bound vehicles, particularly magnetically levitated vehicles |
-
1969
- 1969-02-19 GB GB8996/69A patent/GB1245534A/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2140183A (en) * | 1983-04-21 | 1984-11-21 | Walter Sticht | Method and apparatus for operating an assembly line |
GB2206716A (en) * | 1987-07-06 | 1989-01-11 | Gen Electric Plc | Apparatus for monitoring the presence or movement of an object |
GB2244581A (en) * | 1990-06-02 | 1991-12-04 | Solvit Scient Engineers Limite | System to read barcode signs from or on a moving vehicle |
GB2244581B (en) * | 1990-06-02 | 1994-08-31 | Solvit Scient Engineers Limite | Specification of an automatic system to read barcode signs from or on a moving vehicle |
GB2306726A (en) * | 1995-10-17 | 1997-05-07 | Process Computing Ltd | Communication system |
GB2306726B (en) * | 1995-10-17 | 2000-01-19 | Process Computing Ltd | Communication system |
WO2007085224A1 (en) | 2006-01-24 | 2007-08-02 | Thyssenkrupp Transrapid Gmbh | Device for producing position signals for track-bound vehicles, particularly magnetically levitated vehicles |
CN101007539B (en) * | 2006-01-24 | 2011-06-08 | 蒂森克鲁伯快速运输有限公司 | Device for generating situation signal of vehicle constrained by track |
US8118266B2 (en) | 2006-01-24 | 2012-02-21 | Thyssenkrupp Transrapid Gmbh | Apparatus for generating position signals for rail-bound vehicles, in particular magnetic levitation vehicles |
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