GB1213517A - Improvements in termination circuit for a rail vehicle detection system - Google Patents
Improvements in termination circuit for a rail vehicle detection systemInfo
- Publication number
- GB1213517A GB1213517A GB07761/68A GB1776168A GB1213517A GB 1213517 A GB1213517 A GB 1213517A GB 07761/68 A GB07761/68 A GB 07761/68A GB 1776168 A GB1776168 A GB 1776168A GB 1213517 A GB1213517 A GB 1213517A
- Authority
- GB
- United Kingdom
- Prior art keywords
- track
- circuit
- loop
- inductance
- capacitor
- 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
- 238000001514 detection method Methods 0.000 title 1
- 239000003990 capacitor Substances 0.000 abstract 3
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L1/00—Devices along the route controlled by interaction with the vehicle or train
- B61L1/18—Railway track circuits
- B61L1/181—Details
- B61L1/187—Use of alternating current
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
1,213,517. Track circuit. GENERAL ELECTRIC CO. 16 April, 1968 [24 April, 1967], No. 17761/68. Heading B7N. In an A.C. track circuit arrangement for continuous rail track in which the ends of the circuit are defined by short circuits across the track, the impedance of the track loop 26, 8, 28 between the circuit detector position and the end of the circuit is increased by connecting a capacitor 16 and inductance 14 in series across the track at the detector position with the inductance coupled to the rail portions 26, 28 of the loop and the capacitor 16 having a value which resonates with the inductance 14 and the loop inductance at the frequency of the track circuit supply. The detector 22 is connected across the capacitor and the inductance 14 can be a U-shaped bar secured to but insulated from the rail portions of the loop. The arrangement allows the length of the loop to be reduced and hence obviates a dead zone at the end of the circuit.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US63326967A | 1967-04-24 | 1967-04-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1213517A true GB1213517A (en) | 1970-11-25 |
Family
ID=24538961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB07761/68A Expired GB1213517A (en) | 1967-04-24 | 1968-04-16 | Improvements in termination circuit for a rail vehicle detection system |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3489892A (en) |
| DE (1) | DE1755246A1 (en) |
| ES (1) | ES352688A1 (en) |
| GB (1) | GB1213517A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES444764A1 (en) * | 1975-01-29 | 1977-08-16 | Westinghouse Electric Corp | Train vehicle protection apparatus including signal block occupancy determination |
| GB8402359D0 (en) * | 1984-01-30 | 1984-02-29 | Westinghouse Brake & Signal | Track circuit |
| CN100575164C (en) * | 2006-07-17 | 2009-12-30 | 简水生 | The track circuit system of double track insulated conductors adhered to inside and method of inspection thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB855549A (en) * | 1957-05-27 | 1960-12-07 | Compteurs Et Moteurs Aster | Improvements in railway track-circuits signalling systems |
| US2993116A (en) * | 1958-12-03 | 1961-07-18 | Westinghouse Air Brake Co | Electronic track circuit |
| US3333096A (en) * | 1964-04-03 | 1967-07-25 | Marquardt Corp | Railway track circuit apparatus |
-
1967
- 1967-04-24 US US633269A patent/US3489892A/en not_active Expired - Lifetime
-
1968
- 1968-04-11 ES ES352688A patent/ES352688A1/en not_active Expired
- 1968-04-16 GB GB07761/68A patent/GB1213517A/en not_active Expired
- 1968-04-18 DE DE19681755246 patent/DE1755246A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1755246A1 (en) | 1971-11-04 |
| ES352688A1 (en) | 1969-07-16 |
| US3489892A (en) | 1970-01-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |