WO2009098101A1 - Verfahren zur erhöhung der störsicherheit eines radsensors und radsensor zur durchführung des verfahrens - Google Patents
Verfahren zur erhöhung der störsicherheit eines radsensors und radsensor zur durchführung des verfahrens Download PDFInfo
- Publication number
- WO2009098101A1 WO2009098101A1 PCT/EP2009/050166 EP2009050166W WO2009098101A1 WO 2009098101 A1 WO2009098101 A1 WO 2009098101A1 EP 2009050166 W EP2009050166 W EP 2009050166W WO 2009098101 A1 WO2009098101 A1 WO 2009098101A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- signal
- wheel sensor
- interference
- phase difference
- sensor
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000001965 increasing effect Effects 0.000 title claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 238000011156 evaluation Methods 0.000 claims abstract description 8
- 230000008859 change Effects 0.000 claims abstract description 6
- 238000001514 detection method Methods 0.000 claims abstract description 6
- 230000036039 immunity Effects 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 5
- 230000004044 response Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000013016 damping Methods 0.000 claims 2
- 230000001276 controlling effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 3
- 230000001939 inductive effect Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000010363 phase shift Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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
- B61L1/16—Devices for counting axles; Devices for counting vehicles
- B61L1/163—Detection devices
- B61L1/165—Electrical
-
- 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
- B61L1/16—Devices for counting axles; Devices for counting vehicles
- B61L1/167—Circuit details
Definitions
- the invention relates to a method for increasing the immunity to interference of a wheel sensor, in particular for a trackless ⁇ signaling system, wherein in at least one sensor channel a transmission ⁇ signal is generated, which is inductively coupled to a received signal, which an evaluation device for Erfas ⁇ sung a magnetic field change due to a the track is passed over the rail vehicle and a wheel ⁇ sensor for performing the method.
- Wheel sensors are used in the rail industry for the track vacancy, but also for other switching and reporting tasks. In this case, the magnetic field influencing effect of the iron wheels of rail vehicles is predominantly utilized.
- Two-channel sensors are required for the direction of travel detection. When driving over a vehicle wheel, the two sensor channels generate consecutively time-shifted signals which are used to detect the direction of travel.
- the operating according to the inductive mode of action wheel sensors can be in addition to the one- or two-channel design in proximity switches that detect the reaction of the iron wheels on a magnetic field generating sensor, and railroad systems encompassing systems with separate transmitter and receiver. Due to the traversing wheel, a receiving voltage is generated in the receiving system of the sensor
- Shape of a rolling curve which is also called a bell curve.
- the invention relates to an inductive working single or dual-channel wheel sensor with separate transmitter and receiver.
- Another possibility is to adjust the switching threshold such that the influence of the eddy current brake just barely exceeds the switching threshold and thus is not interpreted as a wheel, while the wheel itself causes an even stronger influence, which is above the switching threshold, and thus correct detek- can be done.
- This solution requires an accurate measurement of the interference by the eddy current brakes and is therefore very expensive and also unreliable.
- the invention has for its object to provide a method for increasing the noise immunity of a wheel sensor and a suitable wheel sensor, which allow a simple way increased interference immunity to interference voltages of different causes.
- the object is achieved in that a Pe ⁇ gel distance is maximized between a useful signal to be evaluated and an interference signal in response to a spurious signal-specific phase difference between the transmission signal and the received signal.
- a wheel sensor for carrying out the method according to Invention ⁇ characterized in that a means for maximizing a distance between a level evaluated Useful signal and a noise signal in response to a noise signal-specific phase difference between the transmission signal and the received signal is provided.
- a synchronized to the transmission signal rectifier is provided on the receiver side, which supplies the receiving voltage.
- the useful signal is produced in the form of a for For ⁇ judgmental rolling curve or bell curve.
- the useful signal is level dependent on the phase position between the transmitted signal and the received signal. This dependence is determined as interference signal-specific phase difference and used for noise suppression.
- the phase position of the received signal is regulated to a maximum level value of the received signal, to which according to claim 5, a ⁇ adjustable phase shifter is used.
- a ⁇ adjustable phase shifter is used.
- the adjusted phase position thus provides the highest possible level value of the received signal.
- Another phase shift of the Emp ⁇ catch signal by an eddy current brake automatically leads to a reduction of influence, because the maximum influence is no longer achieved.
- Level difference between the useful signal and the interference signal consists ge ⁇ claim 3 or according to claim 6 is that the phase difference is determined and is used to attenuate the causing interference signal.
- the phase-position signal is linked to the actual received signal in such a way that a phase change acts in a dampening manner on the received signal, as a result of which this interference-induced influencing is reduced or extinguished.
- Figure 1 is a block diagram of a first embodiment of a wheel sensor
- Both figures each illustrate a sensor channel with a transmitter 1 and a receiver 2, which are arranged on both sides of a railroad track 3 and inductively coupled 4.
- Transmitter 1 and receiver 2 are formed as resonant circuits being ⁇ .
- the coupling 4 and thus the reception AC voltage changes such that a rolling curve in the form of a bell curve ent ⁇ stands.
- This signal overshoot is used for wheel detection.
- the reception alternating voltage 5 is rectified in phase with the transmitter 1 rectified 6, smoothed in the subsequent low-pass filter 7 and then amplified 8.
- the resulting analog signal Sig ⁇ 9 is in an evaluation device 10, preferably a microprocessor, evaluated.
- the evaluation device 10 performs a sensor adjustment by means of a variable phase shifter 11. 10 by generating the evaluation, a control signal 12 which adjusts the phase shifter 11 such that, starting from the ur ⁇ sprün Canal synchronization signal 13 of the transmitter 1, the Emp ⁇ fang signal 5 is displaced as long as 14, to the analog signal 9 reaches a maximum. In this way, disturbing signal induced phase shifts, that is, phase differences between the transmission signal and the received signal quasi-back controlled to ⁇ so that the signal to be evaluated is 9 for wheel detection in the optimal phase range and sub-optimal phase range of the interference.
- the phase difference 16 between the transmission signal 13 and the reception signal 5 is determined in a processing unit 15 and supplied to the evaluation device 10.
- the evaluation device 10 evaluates the analog signal 9 as a function of the determined phase difference 16 with respect to its level, wherein a phase difference 16 corresponding noise level is subtracted.
- a sensor adjustment ie, a phase adjustment by means of a phase shifter 11 according to FIG. 1, can be dispensed with.
- the determination of the phase difference 16 by the processing unit 15 can also be taken over by the off ⁇ values means 10 whereby a special processing unit may be omitted 15th
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Measuring Fluid Pressure (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT09707219T ATE514611T1 (de) | 2008-02-04 | 2009-01-08 | Verfahren zur erhöhung der störsicherheit eines radsensors und radsensor zur durchführung des verfahrens |
CN200980104117.1A CN101939201B (zh) | 2008-02-04 | 2009-01-08 | 用于提高车轮传感器的抗干扰性的方法以及用于执行该方法的车轮传感器 |
AU2009211471A AU2009211471B2 (en) | 2008-02-04 | 2009-01-08 | Method for increasing the interference resistance of a wheel sensor and wheel sensor for carrying out the method |
EP09707219A EP2240357B1 (de) | 2008-02-04 | 2009-01-08 | Verfahren zur erhöhung der störsicherheit eines radsensors und radsensor zur durchführung des verfahrens |
DK09707219.3T DK2240357T3 (da) | 2008-02-04 | 2009-01-08 | Fremgangsmåde til forøgelse af sikekrheden mod forstyrrelser i en hjulføler og hjulføler til udøvelse af fremgangsmåden |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008008028.4 | 2008-02-04 | ||
DE102008008028A DE102008008028A1 (de) | 2008-02-04 | 2008-02-04 | Verfahren zur Erhöhung der Störsicherheit eines Radsensors und Radsensor zur Durchführung des Verfahrens |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009098101A1 true WO2009098101A1 (de) | 2009-08-13 |
Family
ID=40566174
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2009/050166 WO2009098101A1 (de) | 2008-02-04 | 2009-01-08 | Verfahren zur erhöhung der störsicherheit eines radsensors und radsensor zur durchführung des verfahrens |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP2240357B1 (de) |
CN (1) | CN101939201B (de) |
AT (1) | ATE514611T1 (de) |
AU (1) | AU2009211471B2 (de) |
DE (1) | DE102008008028A1 (de) |
DK (1) | DK2240357T3 (de) |
WO (1) | WO2009098101A1 (de) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19709840A1 (de) * | 1997-02-28 | 1998-09-03 | Siemens Ag | Einrichtung für die Achszählung zum Unterscheiden von Radbeeinflussungen und Nicht-Radbeeinflussungen |
EP1256503A1 (de) * | 2001-05-11 | 2002-11-13 | Alcatel | Radsensoreinrichtung (Schienenkontakt) bei Gleisanlagen, mit Mitteln zum Schutz vor elektromagnetischen Störungen |
EP1468891A1 (de) * | 2003-04-14 | 2004-10-20 | Alcatel | Verfahren zur Erhöhung des Störabstands bei Zählpunkten eines Achszählsystems |
EP1473208A1 (de) * | 2003-04-29 | 2004-11-03 | Siemens Schweiz AG | Verfahren zur Detektion einer Gleisbelegung |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2661525Y (zh) * | 2003-11-20 | 2004-12-08 | 徐大年 | 抗干扰车轮传感器 |
-
2008
- 2008-02-04 DE DE102008008028A patent/DE102008008028A1/de not_active Ceased
-
2009
- 2009-01-08 CN CN200980104117.1A patent/CN101939201B/zh active Active
- 2009-01-08 AT AT09707219T patent/ATE514611T1/de active
- 2009-01-08 EP EP09707219A patent/EP2240357B1/de active Active
- 2009-01-08 WO PCT/EP2009/050166 patent/WO2009098101A1/de active Application Filing
- 2009-01-08 DK DK09707219.3T patent/DK2240357T3/da active
- 2009-01-08 AU AU2009211471A patent/AU2009211471B2/en not_active Ceased
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19709840A1 (de) * | 1997-02-28 | 1998-09-03 | Siemens Ag | Einrichtung für die Achszählung zum Unterscheiden von Radbeeinflussungen und Nicht-Radbeeinflussungen |
EP1256503A1 (de) * | 2001-05-11 | 2002-11-13 | Alcatel | Radsensoreinrichtung (Schienenkontakt) bei Gleisanlagen, mit Mitteln zum Schutz vor elektromagnetischen Störungen |
EP1468891A1 (de) * | 2003-04-14 | 2004-10-20 | Alcatel | Verfahren zur Erhöhung des Störabstands bei Zählpunkten eines Achszählsystems |
EP1473208A1 (de) * | 2003-04-29 | 2004-11-03 | Siemens Schweiz AG | Verfahren zur Detektion einer Gleisbelegung |
Also Published As
Publication number | Publication date |
---|---|
DK2240357T3 (da) | 2011-10-17 |
EP2240357A1 (de) | 2010-10-20 |
CN101939201B (zh) | 2013-05-15 |
EP2240357B1 (de) | 2011-06-29 |
AU2009211471A1 (en) | 2009-08-13 |
AU2009211471B2 (en) | 2013-09-05 |
ATE514611T1 (de) | 2011-07-15 |
CN101939201A (zh) | 2011-01-05 |
DE102008008028A1 (de) | 2009-11-26 |
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