GB1377977A - Method for controlling the spacing between adjacent moving track- bound vehicles of a transport system - Google Patents
Method for controlling the spacing between adjacent moving track- bound vehicles of a transport systemInfo
- Publication number
- GB1377977A GB1377977A GB5413371A GB5413371A GB1377977A GB 1377977 A GB1377977 A GB 1377977A GB 5413371 A GB5413371 A GB 5413371A GB 5413371 A GB5413371 A GB 5413371A GB 1377977 A GB1377977 A GB 1377977A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vehicle
- speed
- unit
- vehicles
- value
- 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
- 239000004020 conductor Substances 0.000 abstract 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 abstract 2
- 108010014172 Factor V Proteins 0.000 abstract 1
- 230000000903 blocking effect Effects 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 230000007935 neutral effect Effects 0.000 abstract 1
Classifications
-
- 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 train, e.g. to release brake or to operate a warning signal
- B61L3/16—Continuous control along the route
- B61L3/18—Continuous control along the route using electric current passing between devices along the route and devices on the vehicle or train
- B61L3/20—Continuous control along the route using electric current passing between devices along the route and devices on the vehicle or train employing different frequencies or coded pulse groups, e.g. using currents carried by traction current
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Control Of Vehicles With Linear Motors And Vehicles That Are Magnetically Levitated (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
- Control Of Conveyors (AREA)
Abstract
1377977 Vehicle control MESSERSCHMITT-BOLKOW-BLOHM GmbH 22 Nov 1971 [2 Dec 1970] 54133/71 Heading B7N [Also in Division H4] In an arrangement for controlling the spacing of two vehicles moving on a common path to a preselected value the required speed of the second vehicle is modified by a factor value xd = distance between the vehicles; a = constant; V 2s = required speed for second vehicle; V 1I = actual speed of first vehicle. Each vehicle carries a transmitter 1 and receiver 2, operating at 500 MHz, which are coupled to a VHF transmission line 3 extending along the vehicle track and the coupling leads 7, 8, to the conductor 20 of the line are joined by a capacitor which resonates with the conductor inductance to form a blocking circuit which allows each vehicle to transmit only to its rear and receive from ahead. Unit 15 supplies voltage V 1I which is a tunction of actual vehicle speed and this is applied via voltage frequency converter 13 to unit 14 which frequency modulates the transmitter 1 with the actual speed information and this signal is transmitted via line 3 to a vehicle to the rear. In this latter vehicle the signal having an amplitude which is a function of line loss between vehicles is received in receiver 2 and applied via a frequency demodulation circuit 17 and frequency voltage converter 18 to subtract circuit 4 which is also supplied with the value of speed requested V 2S from store 24. The subtract circuit supplies an output (V 2S - V 1I ). The output from the receiver is also supplied to rectifier 23 which is arranged to provide the output e<SP>-axd</SP> where a is the line attenuator constant and xd is the distance between the vehicles. This is applied with the output from the subtract unit 4 to multiply unit 5 which provides the factor V 2F . This factor is used in unit 6 to modify the required value of speed V 2F stored in unit 24 and the modified value is used in speed regulator 22 to control the vehicle speed. The conductor 19 of the transmission line can be the neutral traction supply return circuit and the conductor 20 can be of iron.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702059173 DE2059173C3 (en) | 1970-12-02 | Arrangement for the distance control of successive track-bound cars |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1377977A true GB1377977A (en) | 1974-12-18 |
Family
ID=5789688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5413371A Expired GB1377977A (en) | 1970-12-02 | 1971-11-22 | Method for controlling the spacing between adjacent moving track- bound vehicles of a transport system |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3764985A (en) |
| AT (1) | AT310246B (en) |
| FR (1) | FR2117124A5 (en) |
| GB (1) | GB1377977A (en) |
| IT (1) | IT941380B (en) |
| NL (1) | NL7116434A (en) |
| SE (1) | SE377203B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2211334A (en) * | 1987-10-20 | 1989-06-28 | Plessey Co Plc | Transportation system having an inter-vehicle distance control arrangement |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4006790A (en) * | 1974-01-11 | 1977-02-08 | Hitachi, Ltd. | Electromagnetic guidance system |
| US4335432A (en) * | 1980-01-28 | 1982-06-15 | United States Of America | Optimal vehicle following control system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3287555A (en) * | 1963-02-01 | 1966-11-22 | Gen Signal Corp | Automatic vehicle control system |
| US3655962A (en) * | 1969-04-01 | 1972-04-11 | Melpar Inc | Digital automatic speed control for railway vehicles |
| US3648228A (en) * | 1970-02-09 | 1972-03-07 | Bendix Corp | Control system for vehicles |
-
1971
- 1971-11-22 GB GB5413371A patent/GB1377977A/en not_active Expired
- 1971-11-23 FR FR7141907A patent/FR2117124A5/fr not_active Expired
- 1971-11-26 IT IT31668/71A patent/IT941380B/en active
- 1971-11-29 US US00202926A patent/US3764985A/en not_active Expired - Lifetime
- 1971-11-30 AT AT1029771A patent/AT310246B/en not_active IP Right Cessation
- 1971-11-30 NL NL7116434A patent/NL7116434A/xx not_active Application Discontinuation
- 1971-11-30 SE SE7115318A patent/SE377203B/xx unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2211334A (en) * | 1987-10-20 | 1989-06-28 | Plessey Co Plc | Transportation system having an inter-vehicle distance control arrangement |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2059173B2 (en) | 1975-08-21 |
| NL7116434A (en) | 1972-06-06 |
| IT941380B (en) | 1973-03-01 |
| DE2059173A1 (en) | 1972-07-06 |
| SE377203B (en) | 1975-06-23 |
| FR2117124A5 (en) | 1972-07-21 |
| US3764985A (en) | 1973-10-09 |
| AT310246B (en) | 1973-09-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |