NO972238D0 - Method and apparatus for determining the speed of railroad vehicles - Google Patents
Method and apparatus for determining the speed of railroad vehiclesInfo
- Publication number
- NO972238D0 NO972238D0 NO972238A NO972238A NO972238D0 NO 972238 D0 NO972238 D0 NO 972238D0 NO 972238 A NO972238 A NO 972238A NO 972238 A NO972238 A NO 972238A NO 972238 D0 NO972238 D0 NO 972238D0
- Authority
- NO
- Norway
- Prior art keywords
- speed
- parabolas
- rail
- triggering times
- signal patterns
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/64—Devices characterised by the determination of the time taken to traverse a fixed distance
- G01P3/66—Devices characterised by the determination of the time taken to traverse a fixed distance using electric or magnetic means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Radar Systems Or Details Thereof (AREA)
- Traffic Control Systems (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention relates to a method including means for the execution thereof, which can be used to determine the speed of a rail vehicle very precisely from the distance travelled. The output signals (JV1, JV2) of two electromagnetic rail contacts arranged on a rail at a predetermined distance from each other are recorded in digital form, and their time interval is used to calculate the speed. To obtain precise triggering times for time measurement, signal patterns (RJ1, RJ2) reproducing a wheel passage are each optimally approximated by calculation using parabolas (P1, P2), and the co-ordinates of the vertexes of the parabolas are used as the triggering times (tS1, tS2). To check whether both successive signal patterns should be associated with wheel passages, the cross-correlation coefficient between the signal pattern and the approximate parabola can be calculated, and compared with a characteristic set value.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP95114611 | 1995-09-16 | ||
PCT/EP1996/004048 WO1997010511A1 (en) | 1995-09-16 | 1996-09-16 | Method and means for high precision determination of the speed of rail vehicles |
Publications (2)
Publication Number | Publication Date |
---|---|
NO972238D0 true NO972238D0 (en) | 1997-05-15 |
NO972238L NO972238L (en) | 1997-07-16 |
Family
ID=8219623
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO972238A NO972238L (en) | 1995-09-16 | 1997-05-15 | Method and apparatus for determining the speed of railroad vehicles |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP0792460B1 (en) |
AT (1) | ATE196011T1 (en) |
CZ (1) | CZ286228B6 (en) |
DE (1) | DE59605819D1 (en) |
DK (1) | DK0792460T3 (en) |
ES (1) | ES2150138T3 (en) |
HU (1) | HU218126B (en) |
NO (1) | NO972238L (en) |
PL (1) | PL181137B1 (en) |
WO (1) | WO1997010511A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004142550A (en) * | 2002-10-23 | 2004-05-20 | Honda Motor Co Ltd | Vehicle body speed measuring device |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2117937A (en) * | 1982-04-23 | 1983-10-19 | Redvers Albert Hocken | A timing system |
DE4302093A1 (en) * | 1993-01-21 | 1994-07-28 | Siemens Ag | Method for determining the speed of railway vehicles |
-
1996
- 1996-09-16 HU HU9701874A patent/HU218126B/en not_active IP Right Cessation
- 1996-09-16 DK DK96931809T patent/DK0792460T3/en active
- 1996-09-16 DE DE59605819T patent/DE59605819D1/en not_active Expired - Lifetime
- 1996-09-16 WO PCT/EP1996/004048 patent/WO1997010511A1/en active IP Right Grant
- 1996-09-16 ES ES96931809T patent/ES2150138T3/en not_active Expired - Lifetime
- 1996-09-16 CZ CZ19971489A patent/CZ286228B6/en not_active IP Right Cessation
- 1996-09-16 EP EP96931809A patent/EP0792460B1/en not_active Expired - Lifetime
- 1996-09-16 PL PL96320420A patent/PL181137B1/en unknown
- 1996-09-16 AT AT96931809T patent/ATE196011T1/en active
-
1997
- 1997-05-15 NO NO972238A patent/NO972238L/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
DE59605819D1 (en) | 2000-10-05 |
WO1997010511A1 (en) | 1997-03-20 |
ES2150138T3 (en) | 2000-11-16 |
HU218126B (en) | 2000-06-28 |
EP0792460B1 (en) | 2000-08-30 |
ATE196011T1 (en) | 2000-09-15 |
NO972238L (en) | 1997-07-16 |
HUP9701874A2 (en) | 1998-03-02 |
DK0792460T3 (en) | 2000-12-18 |
PL181137B1 (en) | 2001-06-29 |
CZ286228B6 (en) | 2000-02-16 |
HUP9701874A3 (en) | 1999-08-30 |
PL320420A1 (en) | 1997-09-29 |
CZ148997A3 (en) | 1998-12-16 |
EP0792460A1 (en) | 1997-09-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
SE8404092D0 (en) | DEVICE FOR DETECTING WHEELS WITH DAMAGED LOPYTOR BY RAILWAY VEHICLE | |
GB1339396A (en) | System for detecting alteral shift of a moving web | |
NO932978D0 (en) | PROCEDURE AND DEVICE FOR MONITORING OF A GAS FLOW, SPECIFICALLY IN A NATURAL GAS FLOW | |
EP0116402A3 (en) | Scrambling systems for audio frequency signals | |
NO972238D0 (en) | Method and apparatus for determining the speed of railroad vehicles | |
DE3068434D1 (en) | Method and system for detecting landslip(s) on railways | |
MY117516A (en) | Adaptive servo gap detection for timing based servo | |
JPS54156610A (en) | Inspecting method of magnetic recording tapes | |
GB1351389A (en) | Method for the checking and the evaluation of the position of railway tracks | |
ES443197A1 (en) | System for compensating a phase difference between magnetic tracks in a magnetic recorded information regenerating apparatus | |
GB1398690A (en) | Method of measuring the skew angle of the operating gap of a magnetic transducer head and a magnetic test record for use in said method | |
ATE287355T1 (en) | METHOD FOR TRACK CLEARANCE REPORT USING AXLE COUNTING | |
GB1309300A (en) | Measurement of the geometrical characteristics of railway track | |
SE7404671L (en) | DEVICE ON SAVING BONDED VEHICLES FOR DETECTING A SAVING CURVE. | |
DE502004001752D1 (en) | Arrangement and method for train protection | |
SU590811A1 (en) | Method of monitoring magnetic head position relative to magnetic tape | |
GB1517513A (en) | Apparatus and method for measuring the alignment of railway track | |
KR900701007A (en) | Optical disk device that clock signal playback method | |
JPS5683834A (en) | Position measuring method of magnetic head and standard magnetic tape using in this method | |
JPS5943345B2 (en) | Wheel detection device for railway vehicles | |
KR900003832A (en) | Tracking Control | |
SU563693A1 (en) | Method of magnetic recording and back-playing | |
JPS5241304A (en) | Train access alarming system having an erroneous alarm preventing circ uit | |
JPS63262542A (en) | Method for measuring transitional air input to vehicle | |
JPS5384482A (en) | Test method for ic |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FC2A | Withdrawal, rejection or dismissal of laid open patent application |