CN101939201B - Method for increasing the interference resistance of a wheel sensor and wheel sensor for carrying out the method - Google Patents
Method for increasing the interference resistance of a wheel sensor and wheel sensor for carrying out the method Download PDFInfo
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- CN101939201B CN101939201B CN200980104117.1A CN200980104117A CN101939201B CN 101939201 B CN101939201 B CN 101939201B CN 200980104117 A CN200980104117 A CN 200980104117A CN 101939201 B CN101939201 B CN 101939201B
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- signal
- wheel sensor
- sensor
- wheel
- phase
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000002452 interceptive effect Effects 0.000 claims description 16
- 238000012545 processing Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract 2
- 238000011156 evaluation Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 230000006698 induction Effects 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000010363 phase shift Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000008485 antagonism Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
Images
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
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- 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
The invention relates to a method for increasing the interference resistance of a wheel sensor, in particular for a track clear detection system, wherein a transmission signal (13) is produced in at least one sensor channel, said signal being inductively coupled (4) to a reception signal (5) that is fed to an evaluation device (10) for detection of a magnetic field change as a result of a railway vehicle having traveled over the track (3), and a corresponding wheel sensor. In order to counteract the interference effect using eddy current braking, it is provided that a level separation between a utility signal to be evaluated and an interference signal is maximized in relation to a phase difference (16) between the transmission signal (13) and the reception signal (5), said difference being specific to the interference signal.
Description
Technical field
The present invention relates to a kind ofly to improve wheel sensor, especially for the method for the anti-interference resistance of the wheel sensor of track clear indicating device, wherein, produce transmitted signal at least one sensor channel, this transmitted signal and coupling with receiving induction of signal, this reception signal is transferred to for the analytical equipment that gathers the changes of magnetic field that causes due to the guideway vehicle that crosses track, and relates to a kind of wheel sensor for carrying out the method.
Background technology
Being used for the track clear indication and being used for other switch and the railway system of indication task, adopted wheel sensor.At this, mainly utilized the effect that affects magnetic field of the steel wheel of guideway vehicle.For travel direction identification, need the sensor of two channels.Two sensor channels produce one after the other the signal of skew in time when the wheel of vehicle crosses, and these signals are used to travel direction identification.
, can also be divided into and gather steel wheel to the counteractive approach switch of the sensor that produces magnetic field except the structure that can be divided into a channel or two channels according to the wheel sensor of induction effect principle work
With around the separative transmitter of tool of (umgreifen) rail and the system of receptor.By the wheel that crosses, form with developed curve (Abrollkurve) in the receiving system of sensor, be also referred to as the receiver voltage of the form of bell curve.Surpassing or during lower than (depending on polarity and coil device) fixing switching threshold, wheel is counted as and is identified.The present invention relates to the separative transmitter of tool of an a kind of channel of inductively working or two channels and the wheel sensor of receptor.
The sensor of all induction work is all common, and its interference voltage for the coupling of the induction in operating frequency range is to disturb sensitivity.
A source for this reason is, the eddy-current brake of for example having adopted in ICE3 since several years, this eddy-current brake is because its structure and near its position track can cause high impact and the counting that can lead to errors thus with the similar receiver voltage of wheel of reality.Below will explain in detail as an example of eddy-current brake example the present invention, but be not limited to this special interference signal source.Content of the present invention and relate to the interfering any impact of antagonism that the source by eddy-current brake or other similar effect causes.
In order to improve sensor with respect to the anti-interference resistance of these disturbance variables, known have different solutions specific to sensor construction.In the wheel sensor of the type of the separative transmitter of this tool and receptor oscillating circuit, according to proposing in DE10122980A1, change the resonance frequency of receptor oscillating circuit with respect to transmission frequency, in order to suppress especially the disturbing influence of eddy-current brake.
Another kind of possibility is, adjusts like this switching threshold, makes the impact of eddy-current brake just be no more than switching threshold and not be interpreted as thus wheel identification; And cause the stronger impact that surpasses switching threshold at wheel itself, and can correctly survey thus.This solution take accurate measurement due to the disturbing influence of eddy-current brake as precondition and unusual trouble and unreliable in addition thus.
A kind of replacement of switching threshold adjustment is the adjustment of eddy-current brake, makes to be no more than the maximum impact that allows.This solution is trouble and insecure and not too practical in addition equally.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of method and a kind of suitable wheel sensor for this reason of the anti-interference resistance that improves wheel sensor is provided, and it improves the anti-interference resistance of the interference voltage that causes with respect to different reasons in simple mode.
According to the present invention, above-mentioned technical matters solves by the following: the phase difference specific to interfering signal according between transmitted signal and reception signal maximizes in useful signal to be analyzed and the level difference between interfering signal.
At this, utilized the following fact: with respect to wheel, eddy-current brake is by the phase place of changing of design between transmitted signal and reception signal of its induction effect.Utilize this change of phase place in order to reduce disturbing influence.Therefore, the switching threshold for wheel identification does not require trouble and accurate the adjustment.Cancelled equally the adjustment to each eddy-current brake on guideway vehicle.
According to the present invention, the wheel sensor that is used for execution this method is characterised in that, is provided with for basis the phase difference specific to interfering signal between transmitted signal and reception signal, maximizes at useful signal to be analyzed and the device of the level difference between interfering signal.Usually be provided with the rectifier of synchronizeing with transmitted signal at receiver-side, this rectifier provides receiver voltage.When crossing (Rad ü berfahrt) at wheel, imaging is with the useful signal of the form of developed curve to be analyzed or bell curve.This useful signal depends in transmitted signal and receives phase place between signal according to level.Suppress as determining this dependence specific to the phase difference of interfering signal and being used for interfering signal.
In addition, the phase place that receives signal is adjusted to the maximum level value that receives signal, wherein, be used for adjustable phase shifter.At this, can adjust or the synchronizing signal of mobile or rectifier or receive signal itself.Thus, the phase place of adjustment provides the level value of the maximum possible that receives signal.Automatically cause the reduction that affects by eddy-current brake further phase shift to received signal, because no longer reach maximum effect.
The another kind of preferred implementation that is used for the level difference of maximization between useful signal and interfering signal is to determine phase difference, and be used for the interfering signal that decay produces.At this, phase signal is related like this with actual reception signal, make phase change affect damply the reception signal, reduce thus or eliminated this impact that is caused by interfering signal.
Description of drawings
Below explain in detail the present invention by accompanying drawing.Wherein,
Fig. 1 shows the block diagram of the first embodiment of wheel sensor, and
Fig. 2 and Fig. 1 show the second embodiment of wheel sensor in the same manner.
The specific embodiment
Two figure show respectively the sensor channel with transmitter 1 and receptor 2, and transmitter 1 and receptor 2 are set up rail 3 both sides and inductively are coupled 4.Transmitter 1 and receptor 2 are constructed to oscillating circuit.When the wheel by guideway vehicle crossed, coupling 4 and receive thus alternating-current voltage/AC voltage and change like this made the developed curve that forms with the bell curve form.This signal boost
Be used to wheel identification.Receive alternating-current voltage/AC voltage 5 and synchronizedly be rectified 6 to transmitter 1, smoothed and then be exaggerated 8 in low pass 7 subsequently.The analog signal 9 of this result is analyzed in analytical equipment 10 (being preferably little processing).
In order to minimize the interference of the signal processing that causes due to eddy-current brake, according to Fig. 1, analytical equipment 10 carries out the sensor equilibrium by variable phase shifter 11.For this reason, analytical equipment 10 produces control signal 12, and this control signal is regulated phase shifter 11 like this, makes the original synchronizing signal 13s from transmitter 1, mobile 14 receives signal 5, until analog signal 9 reaches maxim always.Accurately by this way oppositely regulate the phase shift that is caused by signal, that is, in transmitted signal with receive phase difference between signal, thereby signal to be analyzed 9 is arranged in for the phase range of the best of wheel identification and in the suboptimum phase range of disturbing influence.
In the embodiment shown in Fig. 2, determine in transmitted signal 13 in processing unit 15 and receive the phase difference 16 between signal 5 and be transferred to analytical equipment 10.Analytical equipment 10 wherein deducts the noise level corresponding to phase difference 16 according to the level of determined phase difference 16 analysis mode signals 9.In this distortion, sensor is balanced, that is, adjust optional by the phase place according to the phase shifter 11 of Fig. 1.In principle, can also be born together by analytical equipment 10 by the definite of 15 pairs of phase differences 16 of processing unit, can cancel special processing unit 15 thus.
Claims (7)
1. method that improves the anti-interference resistance of wheel sensor, wherein, produce transmitted signal (13) at least one sensor channel, this transmitted signal with receive signal (5) inductively be coupled (4), this reception signal is transferred to for the analytical equipment (10) that gathers the changes of magnetic field that causes due to the guideway vehicle that crosses track (3)
It is characterized in that,
The phase difference specific to interfering signal (16) according between described transmitted signal (13) and reception signal (5) maximizes in useful signal to be analyzed and the level difference between interfering signal.
2. method according to claim 1, is characterized in that, makes reception signal (5) reach the maximum level value by the phase place of adjusting described reception signal (5), maximizes level difference.
3. method according to claim 1, is characterized in that, by determining phase difference (16) and being used for the interfering signal that decay produces, maximizes level difference.
4. method according to claim 1, is characterized in that, described wheel sensor is the wheel sensor for the track clear indicating device.
5. a wheel sensor of be used for carrying out in accordance with the method for claim 1, is characterized in that, be provided with for according to specific to the phase difference of interfering signal, maximize at useful signal to be analyzed and the device of the level difference between interfering signal.
6. wheel sensor according to claim 5, is characterized in that, described device has phase shifter (11), can regulate this phase shifter and make described reception signal (5) reach the maximum level value.
7. wheel sensor according to claim 5, is characterized in that, described device has processing unit (15), is used for surveying the phase difference (16) of the attenuation units that puts on the interfering signal that produces for decay.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008008028.4 | 2008-02-04 | ||
| DE102008008028A DE102008008028A1 (en) | 2008-02-04 | 2008-02-04 | Method for increasing the interference immunity of a wheel sensor and wheel sensor for carrying out the method |
| PCT/EP2009/050166 WO2009098101A1 (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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101939201A CN101939201A (en) | 2011-01-05 |
| CN101939201B true CN101939201B (en) | 2013-05-15 |
Family
ID=40566174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200980104117.1A Active CN101939201B (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 |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP2240357B1 (en) |
| CN (1) | CN101939201B (en) |
| AT (1) | ATE514611T1 (en) |
| AU (1) | AU2009211471B2 (en) |
| DE (1) | DE102008008028A1 (en) |
| DK (1) | DK2240357T3 (en) |
| WO (1) | WO2009098101A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19709840A1 (en) * | 1997-02-28 | 1998-09-03 | Siemens Ag | Axis counting arrangement for rail-bound vehicle |
| EP1256503A1 (en) * | 2001-05-11 | 2002-11-13 | Alcatel | Wheel sensor (rail contact) in track systems with means for protection against electromagnetic noise |
| EP1473208A1 (en) * | 2003-04-29 | 2004-11-03 | Siemens Schweiz AG | Process for detection of track occupation |
| CN2661525Y (en) * | 2003-11-20 | 2004-12-08 | 徐大年 | Anti interference wheel detector |
| EP1468891B1 (en) * | 2003-04-14 | 2005-06-08 | Alcatel | Method for increasing the signal/noise ratio of axle counters systems |
-
2008
- 2008-02-04 DE DE102008008028A patent/DE102008008028A1/en not_active Ceased
-
2009
- 2009-01-08 CN CN200980104117.1A patent/CN101939201B/en active Active
- 2009-01-08 AT AT09707219T patent/ATE514611T1/en active
- 2009-01-08 EP EP09707219A patent/EP2240357B1/en active Active
- 2009-01-08 WO PCT/EP2009/050166 patent/WO2009098101A1/en active Application Filing
- 2009-01-08 DK DK09707219.3T patent/DK2240357T3/en active
- 2009-01-08 AU AU2009211471A patent/AU2009211471B2/en not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19709840A1 (en) * | 1997-02-28 | 1998-09-03 | Siemens Ag | Axis counting arrangement for rail-bound vehicle |
| EP1256503A1 (en) * | 2001-05-11 | 2002-11-13 | Alcatel | Wheel sensor (rail contact) in track systems with means for protection against electromagnetic noise |
| EP1468891B1 (en) * | 2003-04-14 | 2005-06-08 | Alcatel | Method for increasing the signal/noise ratio of axle counters systems |
| EP1473208A1 (en) * | 2003-04-29 | 2004-11-03 | Siemens Schweiz AG | Process for detection of track occupation |
| CN2661525Y (en) * | 2003-11-20 | 2004-12-08 | 徐大年 | Anti interference wheel detector |
Also Published As
| Publication number | Publication date |
|---|---|
| DK2240357T3 (en) | 2011-10-17 |
| EP2240357A1 (en) | 2010-10-20 |
| EP2240357B1 (en) | 2011-06-29 |
| AU2009211471A1 (en) | 2009-08-13 |
| AU2009211471B2 (en) | 2013-09-05 |
| ATE514611T1 (en) | 2011-07-15 |
| CN101939201A (en) | 2011-01-05 |
| WO2009098101A1 (en) | 2009-08-13 |
| DE102008008028A1 (en) | 2009-11-26 |
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Effective date of registration: 20190509 Address after: Munich, Germany Patentee after: SIEMENS Mobile Ltd. Address before: Munich, Germany Patentee before: Siemens AG |
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Address after: Munich, Germany Patentee after: Siemens Transport Co., Ltd. Address before: Munich, Germany Patentee before: SIEMENS Mobile Ltd. |
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