CA2241520C - Train proximity detector - Google Patents
Train proximity detector Download PDFInfo
- Publication number
- CA2241520C CA2241520C CA002241520A CA2241520A CA2241520C CA 2241520 C CA2241520 C CA 2241520C CA 002241520 A CA002241520 A CA 002241520A CA 2241520 A CA2241520 A CA 2241520A CA 2241520 C CA2241520 C CA 2241520C
- Authority
- CA
- Canada
- Prior art keywords
- train
- carrier
- proximity
- carrier frequency
- signals
- 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 - Fee Related
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 42
- 230000004913 activation Effects 0.000 claims abstract description 4
- 238000001514 detection method Methods 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 14
- 230000004044 response Effects 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 7
- 230000002265 prevention Effects 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims 1
- 230000001953 sensory effect Effects 0.000 claims 1
- 238000012795 verification Methods 0.000 claims 1
- 238000012986 modification Methods 0.000 abstract description 10
- 230000004048 modification Effects 0.000 abstract description 10
- 230000000007 visual effect Effects 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 description 8
- 230000003137 locomotive effect Effects 0.000 description 5
- 230000000994 depressogenic effect Effects 0.000 description 4
- 230000003213 activating effect Effects 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005236 sound signal Effects 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000004397 blinking Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L29/00—Safety means for rail/road crossing traffic
- B61L29/24—Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning
- B61L29/246—Signals or brake- or lighting devices mounted on the road vehicle and controlled from the vehicle or train
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0965—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages responding to signals from another vehicle, e.g. emergency vehicle
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US944195P | 1995-12-29 | 1995-12-29 | |
| US60/009,441 | 1995-12-29 | ||
| US08/600,351 US5739768A (en) | 1995-08-22 | 1996-02-12 | Train proximity detector |
| US08/600,351 | 1996-02-12 | ||
| PCT/US1996/020602 WO1997024704A1 (en) | 1995-12-29 | 1996-12-24 | Train proximity detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2241520A1 CA2241520A1 (en) | 1997-07-10 |
| CA2241520C true CA2241520C (en) | 2005-03-22 |
Family
ID=26679485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002241520A Expired - Fee Related CA2241520C (en) | 1995-12-29 | 1996-12-24 | Train proximity detector |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0870289B1 (de) |
| AU (1) | AU715330B2 (de) |
| CA (1) | CA2241520C (de) |
| DE (1) | DE69633191D1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113377032B (zh) * | 2021-06-09 | 2022-09-27 | 王海涛 | 悬挂式轨道交通系统的控制系统及运行控制方法 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3854119A (en) * | 1972-08-11 | 1974-12-10 | Solitron Devices | Vehicle proximity alerting means |
| US4296496A (en) * | 1974-07-03 | 1981-10-20 | Sadler William S | Emergency radio frequency warning device |
| US4942395A (en) * | 1987-08-24 | 1990-07-17 | Ferrari John S | Railroad grade crossing motorist warning system |
| US5497145A (en) * | 1994-07-05 | 1996-03-05 | Motorola, Inc. | Selective call receiver with battery saving features and method therefor |
| US5554982A (en) * | 1994-08-01 | 1996-09-10 | Hughes Aircraft Co. | Wireless train proximity alert system |
-
1996
- 1996-12-24 AU AU16874/97A patent/AU715330B2/en not_active Ceased
- 1996-12-24 EP EP96945646A patent/EP0870289B1/de not_active Expired - Lifetime
- 1996-12-24 DE DE69633191T patent/DE69633191D1/de not_active Expired - Lifetime
- 1996-12-24 CA CA002241520A patent/CA2241520C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE69633191D1 (de) | 2004-09-23 |
| EP0870289A4 (de) | 1999-03-10 |
| AU715330B2 (en) | 2000-01-20 |
| EP0870289B1 (de) | 2004-08-18 |
| EP0870289A1 (de) | 1998-10-14 |
| CA2241520A1 (en) | 1997-07-10 |
| AU1687497A (en) | 1997-07-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20131224 |