CN101939201A - Be used to improve the method for anti-interference resistance of wheel sensor and the wheel sensor that is used to carry out this method - Google Patents
Be used to improve the method for anti-interference resistance of wheel sensor and the wheel sensor that is used to carry out this method Download PDFInfo
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- CN101939201A CN101939201A CN200980104117.1A CN200980104117A CN101939201A CN 101939201 A CN101939201 A CN 101939201A CN 200980104117 A CN200980104117 A CN 200980104117A CN 101939201 A CN101939201 A CN 101939201A
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- signal
- wheel sensor
- received signal
- interfering
- sensor
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000002452 interceptive effect Effects 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 5
- 230000006698 induction Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000010363 phase shift Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000008485 antagonism Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000010276 construction 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
Images
Classifications
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- 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 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, in at least one sensor channel, produce and send signal (13), this sends signal and received signal (5) inductively is coupled (4), and this received signal is transferred to the analytical equipment (10) that is used for gathering the changes of magnetic field that causes owing to the guideway vehicle that crosses track (3).In order to offset especially because the disturbing influence that eddy-current brake produces, the present invention proposes, according at the phase difference specific to interfering signal (16) that sends between signal (13) and the received signal (5), maximize in useful signal to be analyzed and the level difference between the interfering 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, in at least one sensor channel, produce and send signal, this transmission signal and received signal inductively are coupled, this received signal is transferred to the analytical equipment that is used to gather the changes of magnetic field that causes owing to the guideway vehicle that crosses track, and relates to a kind of wheel sensor that is used to carry out this 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 influences 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 out-of-position signal in time when the wheel of vehicle crosses, and these signals are used to travel direction identification.
, except the structure that can be divided into a channel or two channels, can also be divided into and gather steel wheel counteractive to the sensor that produces magnetic field according to the wheel sensor of induction effect principle work near switch
With the transmitter that separates around having of (umgreifen) rail and the system of receptor.By the wheel that crosses, in the receiving system of sensor, form with developed curve (Abrollkurve), be also referred to as the reception voltage of the form of bell curve.When surpassing or being lower than (deciding on polarity and coil device) fixing switching threshold, wheel is counted as and is identified.The present invention relates to an a kind of channel of inductively working or the transmitter with separation of two channels and the wheel sensor of receptor.
The sensor of all induction work all is 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 and the wheel of reality similarly receives the high influence of voltage and the counting that can lead to errors thus.Below will be that example is explained the present invention in detail with the eddy-current brake, but be not limited to this special interference signal source.Content of the present invention and relate to the interfering any influence of antagonism that the source by eddy-current brake or other similar effect causes.
In order to improve the anti-interference resistance of sensor with respect to these disturbance variables, known have different solutions specific to sensor construction.In the wheel sensor of the type of this transmitter with separation and receptor oscillating circuit, according to proposing among the DE10122980A1, with respect to the resonance frequency of transmission frequency change receptor oscillating circuit, so that suppress the disturbing influence of eddy-current brake especially.
Another kind of possibility is that the adjusting switch threshold value makes the influence of eddy-current brake just be no more than switching threshold and not be interpreted as wheel identification thus like this; And cause the stronger influence that surpasses switching threshold, and can correctly survey thus at wheel itself.This solution with accurate measurement because the disturbing influence of eddy-current brake is 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 influence 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 for this reason wheel sensor that improves the anti-interference resistance of 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: according at the phase difference specific to interfering signal that sends between signal and the received signal, maximize in useful signal to be analyzed and the level difference between the 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 transmission signal and received signal of its induction effect.Utilize this change of phase place in order to reduce disturbing influence.Therefore, the switching threshold that is used for wheel identification does not require trouble and accurate the adjustment.Cancelled adjustment equally to each eddy-current brake on guideway vehicle.
According to the present invention, the wheel sensor that is used to carry out this method is characterised in that, is provided with to be used for according to sending the phase difference specific to interfering signal between signal and the received signal, maximization at the useful signal to be analyzed and the device of the level difference between the interfering signal.Usually be provided with and send the synchronous rectifier of signal at receiver-side, this rectifier provides reception voltage.Imaging is with the useful signal of the form of developed curve to be analyzed or bell curve when crossing (Rad ü berfahrt) at wheel.This useful signal depends in the phase place that sends between signal and the received 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 of received signal is adjusted to the maximum level value of received signal, wherein, be used for adjustable phase shifter according to claim 5 according to claim 2.At this, can adjust or move or the synchronizing signal or the received signal itself of rectifier.Thus, the phase place of adjustment provides the level value of the maximum possible of received signal.Automatically cause the reduction that influences by eddy-current brake further phase shift to received signal, because no longer reach maximum effect.
According to claim 3 or according to claim 6, the another kind of preferred implementation that is used to maximize the level difference between useful signal and interfering signal is, determines phase difference, and is used to the interfering signal that decays and produce.At this, phase signal is related like this with actual received signal, make phase change influence received signal damply, reduce thus or eliminated this influence that causes by interfering signal.
Description of drawings
Below explain the present invention in detail by accompanying drawing.Wherein,
Fig. 1 shows the block diagram of first embodiment of wheel sensor, and
Fig. 2 and Fig. 1 show second embodiment of wheel sensor in the same manner.
The specific embodiment
Two figure show the sensor channel with transmitter 1 and receptor 2 respectively, 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 alternating-current voltage/AC voltage thus and change like this made to form developed curve with the bell curve form.This signal boost
Be used to wheel identification.Receive alternating-current voltage/AC voltage 5 synchronised ground by rectification 6 to transmitter 1, smoothed and be exaggerated 8 then in low pass 7 subsequently.This result's analog signal 9 is analyzed in analytical equipment 10 (being preferably little processing).
In order to minimize the interference of the signal conditioning that causes owing 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 from the original synchronizing signal 13 of transmitter 1, moves 14 received signals 5 always, reaches maxim up to analog signal 9.Accurately by this way oppositely regulate the phase shift that is caused by signal, that is, at the phase difference that sends between signal and the received signal, thereby signal to be analyzed 9 is arranged in the phase range of the best that is used for wheel identification and in the suboptimum phase range of disturbing influence.
In the embodiment shown in Fig. 2, in processing unit 15, determine sending the phase difference 16 between signal 13 and the received 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, the sensor equilibrium promptly, is adjusted optional by the phase place according to the phase shifter 11 of Fig. 1.In principle, can also bear together by analytical equipment 10, can cancel particular processing unit 15 thus by the definite of 15 pairs of phase differences 16 of processing unit.
Claims (6)
- One kind improve wheel sensor, especially for the method for the anti-interference resistance of the wheel sensor of track clear indicating device, wherein, in at least one sensor channel, produce and send signal (13), this sends signal and received signal (5) inductively be coupled (4), this received signal is transferred to the analytical equipment (10) that is used for gathering the changes of magnetic field that causes owing to the guideway vehicle that crosses track (3)It is characterized in that,According to the phase difference specific to interfering signal (16) between described transmission signal (13) and received signal (5), maximization is in useful signal to be analyzed and the level difference between the interfering signal.
- 2. method according to claim 1 is characterized in that, by the phase place of described received signal (5) being adjusted to the maximum level value of received signal (5), maximizes level difference.
- 3. method according to claim 1 is characterized in that, by determining phase difference (16) and being used to the interfering signal that decays and produced, maximizes level difference.
- 4. wheel sensor that is used for carrying out according to each described method of aforesaid right requirement, it is characterized in that, be provided be used for according to specific to the phase difference of interfering signal, maximization at the useful signal to be analyzed and the device of the level difference between the interfering signal.
- 5. wheel sensor according to claim 4 is characterized in that, described device has phase shifter (11), and this phase shifter can be adjusted to the maximum level value of described received signal (5).
- 6. wheel sensor according to claim 4 is characterized in that, described device has processing unit (15), is used to survey the phase difference (16) of the attenuation units that puts on the interfering signal that produced of being used to 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 true CN101939201A (en) | 2011-01-05 |
| CN101939201B 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) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19709840C2 (en) * | 1997-02-28 | 2001-10-04 | Siemens Ag | Axle counting device to distinguish between wheel influences and non-wheel influences |
| DE10122980A1 (en) | 2001-05-11 | 2002-11-14 | Alcatel Sa | Wheel sensor device (rail contact) in track systems, with means for protection against electromagnetic interference |
| ATE297338T1 (en) * | 2003-04-14 | 2005-06-15 | Cit Alcatel | METHOD FOR INCREASING THE SIGN-TO-JOURNEY OF COUNTING POINTS OF AN AXLE COUNTING SYSTEM |
| ATE303277T1 (en) * | 2003-04-29 | 2005-09-15 | Siemens Schweiz Ag | METHOD FOR DETECTING TRACK OCCUPANCY |
| CN2661525Y (en) * | 2003-11-20 | 2004-12-08 | 徐大年 | Anti interference wheel detector |
-
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
Also Published As
| Publication number | Publication date |
|---|---|
| DK2240357T3 (en) | 2011-10-17 |
| EP2240357A1 (en) | 2010-10-20 |
| CN101939201B (en) | 2013-05-15 |
| EP2240357B1 (en) | 2011-06-29 |
| AU2009211471A1 (en) | 2009-08-13 |
| AU2009211471B2 (en) | 2013-09-05 |
| ATE514611T1 (en) | 2011-07-15 |
| 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. |