GB1485827A - Communication system for guideway operated vehicles - Google Patents
Communication system for guideway operated vehiclesInfo
- Publication number
- GB1485827A GB1485827A GB36384/74A GB3638474A GB1485827A GB 1485827 A GB1485827 A GB 1485827A GB 36384/74 A GB36384/74 A GB 36384/74A GB 3638474 A GB3638474 A GB 3638474A GB 1485827 A GB1485827 A GB 1485827A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vehicle
- signal
- signals
- line
- phase
- 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
-
- 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 vehicle trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or vehicle trains
- B61L25/021—Measuring and recording of train speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L15/00—Indicators provided on the vehicle or vehicle train for signalling purposes ; On-board control or communication systems
- B61L15/0018—Communication with or on the vehicle or vehicle train
- B61L15/0036—Conductor-based, e.g. using CAN-Bus, train-line or optical fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
- B61L27/20—Trackside control of safe travel of vehicle or vehicle train, e.g. braking curve calculation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
- B61L27/70—Details of trackside communication
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L3/00—Devices along the route for controlling devices on the vehicle or vehicle train, e.g. to release brake, to operate a warning signal
- B61L3/16—Continuous control along the route
- B61L3/22—Continuous control along the route using magnetic or electrostatic induction; using electromagnetic radiation
- B61L3/225—Continuous control along the route using magnetic or electrostatic induction; using electromagnetic radiation using separate conductors along the route
Abstract
1485827 Communication system for guideway vehicles TRANSPORTATION TECHNOLOGY Inc 19 Aug 1974 [20 Aug 1973] 36384/74 Headings H4U and H4L [Also in Division B7] A communication system for a vehicle moving along a predetermined path includes a transmission line 52<SP>1</SP> extending along the path and including at least three conductors 54, 56, 58 (Fig. 4) each having a wave configuration offset from the others such that they are relatively equally phase displaced. An inductor loop 50, Fig. 6, on the vehicle couples with the transmission line and is energized with a continuous wave signal, so that signals whose envelopes vary in amplitude as a function of displacement along the path are induced in the conductors. A receiver coupled with the line detects the signals and from their envelope frequency and phase sequence provides outputs indicating the speed and direction of the vehicle. Furthermore, the system enables data and voice communication between the vehicle and a base station to take place. Fig. 4 also indicates the configuration of the return conductor 72 relative to the three offset conductors. At the base station (Fig. 9) a carrier f is derived from an oscillator 178, passes synthesizer 176 and is applied to the line via adder 200 and amplifier 220. It may be mixed at 200 with a modulated voice signal from channel 210 and/or modulated data from channel 202. The signal from the amplifier 220 is applied to the three phase line via coupling circuitry (Fig. 5, not shown). Signals from the 3 phases of the line are derived from the same coupling circuitry and applied to, e.g. A, B, C inputs 130, 132, 134. Two sets of inputs are provided, to allow for the fact that signals may be coming from lines to either side of the vehicle, depending on the route that this is taking through junctions and the position of the arm on the vehicle which carries the transmitting/receiving coils. Presence or absence of a signal on the A line is detected, after filtering and amplification, at 164 to indicate which line is in use: signals from the alternative B and C lines are summed at 156, 158 and the resultant filtered, amplified and applied to respective squaring circuit 157. The squares are summed at 162 to provide a signal which is phase independent of the particular conductor. This signal is applied as feedback via amplifier 184 to the conductor amplifiers and is passed on to detectors 188, 194 where any data or speech modulated signals carried by it can be demodulated using carrier references developed from the frequency synthesizer 176. By measuring the envelope frequency of signals received from a particular conductor at 166 the vehicle speed can be ascertained and by counting the zero crossings the position of the vehicle in the system can be recorded. By noting A, B, C phase sequence at 168 the direction of motion can be determined. At the vehicle, there are two pick-up coils in figure eight configuration 110, 112 (Figs. 4 and 6) displaced relative to each other by 90 degrees by reference to the conductor patterns in the track lines. These coils are surrounded by the transmitter coil 50. The signals V 1 , V 2 picked up from the two coils are filtered, amplified, squared and then added at 230 to provide a signal independent of phase position. After filtering this signal is used to provide feedback via amplifier 244 and a reference for the modulating and demodulating frequencies produced in the vehicle circuitry by frequency synthesizer 248. The frequencies generated by this are used to demodulate the received signal at 242, 254, 256 to produce voice and data information at the vehicle and also to modulate, at 286, 294, 290, voice and data information to be transmitted by the vehicle to the base station.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US38976673A | 1973-08-20 | 1973-08-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1485827A true GB1485827A (en) | 1977-09-14 |
Family
ID=23539645
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB36384/74A Expired GB1485827A (en) | 1973-08-20 | 1974-08-19 | Communication system for guideway operated vehicles |
Country Status (6)
Country | Link |
---|---|
JP (1) | JPS5760821B2 (en) |
CA (1) | CA1017047A (en) |
DE (1) | DE2439598A1 (en) |
FR (1) | FR2241424B1 (en) |
GB (1) | GB1485827A (en) |
ZA (1) | ZA743613B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1320199A1 (en) * | 2001-12-17 | 2003-06-18 | EM Microelectronic-Marin SA | Portable receiver with low dispersion |
WO2010023254A1 (en) * | 2008-08-29 | 2010-03-04 | Cambridge Silicon Radio Limited | Inductor structure |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5745402A (en) * | 1980-09-01 | 1982-03-15 | Hitachi Cable Ltd | Position detecting system of moving object |
JPS62117492U (en) * | 1986-01-20 | 1987-07-25 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1550835A (en) * | 1967-01-12 | 1968-12-20 | ||
US3527897A (en) * | 1967-03-20 | 1970-09-08 | Sumitomo Electric Industries | Induction radio system for vehicles |
US3772640A (en) * | 1971-04-01 | 1973-11-13 | Gen Signal Corp | Vehicle control system with vehicle location error checking means |
-
1974
- 1974-05-31 CA CA201,428A patent/CA1017047A/en not_active Expired
- 1974-06-06 ZA ZA00743613A patent/ZA743613B/en unknown
- 1974-08-17 DE DE2439598A patent/DE2439598A1/en not_active Withdrawn
- 1974-08-19 GB GB36384/74A patent/GB1485827A/en not_active Expired
- 1974-08-19 FR FR7428435A patent/FR2241424B1/fr not_active Expired
- 1974-08-20 JP JP49095489A patent/JPS5760821B2/ja not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1320199A1 (en) * | 2001-12-17 | 2003-06-18 | EM Microelectronic-Marin SA | Portable receiver with low dispersion |
WO2010023254A1 (en) * | 2008-08-29 | 2010-03-04 | Cambridge Silicon Radio Limited | Inductor structure |
EP2333797A1 (en) * | 2008-08-29 | 2011-06-15 | Cambridge Silicon Radio Limited | Inductor structure |
US8841983B2 (en) | 2008-08-29 | 2014-09-23 | Cambridge Silicon Radio Limited | Inductor structure |
Also Published As
Publication number | Publication date |
---|---|
AU7246574A (en) | 1976-02-19 |
FR2241424A1 (en) | 1975-03-21 |
ZA743613B (en) | 1975-05-28 |
DE2439598A1 (en) | 1975-03-06 |
JPS5052707A (en) | 1975-05-10 |
CA1017047A (en) | 1977-09-06 |
FR2241424B1 (en) | 1978-11-24 |
JPS5760821B2 (en) | 1982-12-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6011508A (en) | Accurate position-sensing and communications for guideway operated vehicles | |
US3979091A (en) | Communication system for guideway operated vehicles | |
CA1310725C (en) | Propagation time detecting system with use of detected phase difference of transmitted and received subcarrier | |
SE8403564D0 (en) | PROCEDURE FOR THE DETERMINATION OF MEDICINE, AS APPLICABLE HEREIN | |
GB1435489A (en) | Automatic vehicle guidance systems | |
US4296400A (en) | Installation for control of a traffic light system by vehicles having an automatic location determination | |
JPS4217509Y1 (en) | ||
EP0199342A3 (en) | Vehicle detecting method and system which can communicate with vehicles | |
GB1485827A (en) | Communication system for guideway operated vehicles | |
ZA853641B (en) | Ground speed sensor | |
JPH0454189B2 (en) | ||
JP3205232B2 (en) | Beacon receiver | |
JP3197913B2 (en) | Train communication control method | |
SU387874A1 (en) | METHOD OF TRANSFERING INFORMATION TO MOBILE | |
GB1107028A (en) | Improvements relating to systems for transmitting information to moving trains | |
JPH0734777Y2 (en) | ATC signal display number increasing device | |
JP2931638B2 (en) | Mobile object ranging monitoring system | |
JPS5839304B2 (en) | Shiyariyouichikenchihoushiki | |
JP3002514U (en) | Remote control golf cart operation management device | |
SU1162652A1 (en) | Device for transmitting information from track to locomotive | |
JPS60209360A (en) | Car controller | |
JPS60174357A (en) | Method of overlapping information in low-frequency track circuit for railway signal | |
JPH0526713B2 (en) | ||
JPS61211160A (en) | Car controlling and car detector | |
JPH04314217A (en) | Train communication equipment |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |