GB900547A - Electrical identification system for mobile objects - Google Patents
Electrical identification system for mobile objectsInfo
- Publication number
- GB900547A GB900547A GB2111559A GB2111559A GB900547A GB 900547 A GB900547 A GB 900547A GB 2111559 A GB2111559 A GB 2111559A GB 2111559 A GB2111559 A GB 2111559A GB 900547 A GB900547 A GB 900547A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- transmitter
- mobile objects
- oscillator
- june
- 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
- 239000003990 capacitor Substances 0.000 abstract 1
- 230000001939 inductive effect Effects 0.000 abstract 1
- 230000011664 signaling Effects 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
- 229910000859 α-Fe Inorganic materials 0.000 abstract 1
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 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Near-Field Transmission Systems (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
900,547. Inductive signalling and control of apparatus; transporter apparatus. STANDARD TELEPHONES & CABLES Ltd. June 19, 1959 [June 25, 1958], No.. 21115/59. Class 40 (5). In an electrical system for the identification of mobile objects, each of which has a pick-up circuit and an oscillator of distinctive frequency, a transmitter and selective receivers responsive respectively to said oscillators are placed in proximity to the path of said objects, each of the pickup circuits receiving energy from said transmitter when near it and providing sufficient direct current to remove its associated oscillator operative for a time ending later than that in which said pick-up circuit is near said transmitter. The mobile objects may be, for example, trams or railway coaches. The radiated energy which is of mains frequency is picked up by circuit L 1 , rectified at RE, smoothed, and powers a transistor oscillator having coupled windings on a ferrite core in the collector and base circuits, the collector circuit being characteristically tuned by capacitor C. In order to recognise the direction of travel of the object, it first passes through a 50 c/s. field before passing the receiver and thus the latter will react immediately, whereas if the direction is reversed the object will not react until after it has passed the receiver's immediate vicinity.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE568872 | 1958-06-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB900547A true GB900547A (en) | 1962-07-04 |
Family
ID=3845040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2111559A Expired GB900547A (en) | 1958-06-25 | 1959-06-19 | Electrical identification system for mobile objects |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB900547A (en) |
-
1959
- 1959-06-19 GB GB2111559A patent/GB900547A/en not_active Expired
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