WO2009030663A1 - Verfahren zur achszählung bei schienenfahrzeugen - Google Patents
Verfahren zur achszählung bei schienenfahrzeugen Download PDFInfo
- Publication number
- WO2009030663A1 WO2009030663A1 PCT/EP2008/061489 EP2008061489W WO2009030663A1 WO 2009030663 A1 WO2009030663 A1 WO 2009030663A1 EP 2008061489 W EP2008061489 W EP 2008061489W WO 2009030663 A1 WO2009030663 A1 WO 2009030663A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- switching threshold
- counting
- threshold
- exceeding
- pulse
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000015556 catabolic process Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 2
- 241000656145 Thyrsites atun Species 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001939 inductive 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
- B61L1/162—Devices for counting axles; Devices for counting vehicles characterised by the error correction
Definitions
- the invention relates to a method for axle counting in
- Rail vehicles with a in particular in the region of a rail curve arranged axle counting sensor, wherein an analog waveform at the output of Achsterrorismsensors is compared with a first switching threshold, between the overshoot and subsequent undershooting a digital count is generated.
- Axle counting sensors are used in the railway industry for track vacancy detection, but also for other switching and reporting tasks. It is mainly the magnetic field influencing
- Two-channel sensors are required for the direction of travel detection of the rail vehicle.
- the two sensor channels When driving over a vehicle wheel, the two sensor channels generate successively time-shifted signals that are used to detect the direction of travel.
- axle-counting sensors which work according to the inductive principle of action, can also be used in proximity switches in addition to the one- or two-channel design, which reduces the retroactive effect of the
- Allen inductively working sensors is common that they are susceptible to bogie tilting, which occur especially in the region of a rail bend.
- This so-called spike effect can lead to a short-term collapse of the analogue signal path up to come half of the first switching threshold, so that a division of the digital count results.
- This Zählimpulstei ⁇ ment leads to miscalculations with respect to the number of axes that have passed the sensor.
- the pike effect occurs particularly pronounced in rail arcs with a relatively small radius, as it typically occurs in local traffic.
- the behavior of rail vehicles when cornering is described, inter alia, in Friedrich, F. "Tracking in narrow track curves", The Nah Vin 2/1985, pages 52 - 61.
- the invention has for its object to provide a method for axle counting with Achsieresensoren in which the P mangang bin does not adversely affect, so that axle ⁇ counting noise can be avoided.
- the object is achieved in that a division of the digital count pulse is briefly avoided at a brief onset of the analog waveform to below the first switching ⁇ threshold by the digital count between see the excess and the subsequent below a second, below the first switching threshold lying second switching threshold is generated.
- a total undivided pulse which can be further evaluated as digita ⁇ ler count arises.
- the second switching threshold is assured that the count is not already terminated with the falling below the first switching threshold in the region of collapse, and is formed at RETRY ⁇ ter exceeding the first threshold in the range of the break-new.
- the height of the second switching Threshold is chosen such that true counts resulting from two different axes are not merged into a single count. The signal collapse must not exceed a certain level.
- the time difference between the exceeding and falling below the second switching threshold is measured and determines the time length of the count pulse.
- the time length of the count pulse corresponds to the measured time difference.
- FIG. 1 shows the generation of a counting pulse when an axle counting sensor is arranged on a straight track
- FIG. 3 shows a procedure for avoiding the double counting pulse according to FIG. 2.
- Figures 1 to 3 show in a comparable representation in the upper signal curve, the analog influence 1 or 1.1 of Achsbeatensensors.
- Figure 1 illustrates the conditions in a Achsweakened ⁇ sensor, which is mounted on a straight track and is run over by a railway wheel. It can be seen that at
- FIG. 3 shows a procedure for avoiding the division in two parts 4.1 / 4.2 of the counting pulse 4.
- it is first checked whether the analog wheel influence 1.1 of the axle counting sensor has exceeded the switching threshold 3 in the axle counting sensor. Then, when falling below a second switching threshold 6, which is below the first switching threshold 3, the state wheel detection is activated. At the same time, the time toN between the exceeding of the second switching threshold 6 and the subsequent undershooting of the second switching threshold 6 is measured.
- the state wheel detection is now output for the period t 0N as already digitized signal 7 and by means of a threshold value 8 in a Stell ⁇ werk the faux kauspore 4 customized.
- the short-term signal dip 5 is disregarded, so that the correct one ⁇ zel-count pulse 4 is formed.
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH00259/10A CH699857B1 (de) | 2007-09-03 | 2008-09-01 | Verfahren zur Achszählung bei Schienenfahrzeugen. |
DE112008002186T DE112008002186A5 (de) | 2007-09-03 | 2008-09-01 | Verfahren zur Achszählung bei Schienenfahrzeugen |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007041955 | 2007-09-03 | ||
DE102007041955.6 | 2007-09-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009030663A1 true WO2009030663A1 (de) | 2009-03-12 |
Family
ID=40185069
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2008/061489 WO2009030663A1 (de) | 2007-09-03 | 2008-09-01 | Verfahren zur achszählung bei schienenfahrzeugen |
Country Status (4)
Country | Link |
---|---|
CH (1) | CH699857B1 (de) |
DE (1) | DE112008002186A5 (de) |
TW (1) | TW200918382A (de) |
WO (1) | WO2009030663A1 (de) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1755159A1 (de) * | 1968-04-06 | 1971-11-18 | Standard Elek K Lorenz Ag | Verfahren zum UEberwachen und Impulsauswerten in Achszaehleinrichtungen fuer Eisenbahnanlagen |
US5333820A (en) * | 1993-02-18 | 1994-08-02 | Union Switch & Signal Inc. | Railway vehicle wheel detector utilizing magnetic differential bridge |
DE19745436A1 (de) * | 1997-10-15 | 1999-04-22 | Cit Alcatel | Schienenkontakt für eine Achszähleinrichtung |
-
2008
- 2008-08-25 TW TW97132351A patent/TW200918382A/zh unknown
- 2008-09-01 WO PCT/EP2008/061489 patent/WO2009030663A1/de active Application Filing
- 2008-09-01 CH CH00259/10A patent/CH699857B1/de not_active IP Right Cessation
- 2008-09-01 DE DE112008002186T patent/DE112008002186A5/de not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1755159A1 (de) * | 1968-04-06 | 1971-11-18 | Standard Elek K Lorenz Ag | Verfahren zum UEberwachen und Impulsauswerten in Achszaehleinrichtungen fuer Eisenbahnanlagen |
US5333820A (en) * | 1993-02-18 | 1994-08-02 | Union Switch & Signal Inc. | Railway vehicle wheel detector utilizing magnetic differential bridge |
DE19745436A1 (de) * | 1997-10-15 | 1999-04-22 | Cit Alcatel | Schienenkontakt für eine Achszähleinrichtung |
Also Published As
Publication number | Publication date |
---|---|
CH699857B1 (de) | 2011-07-29 |
TW200918382A (en) | 2009-05-01 |
DE112008002186A5 (de) | 2010-08-05 |
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