EP0463127A1 - Anordnung zur feststellung eines objektes mittels körperschall, sowie deren verwendung. - Google Patents
Anordnung zur feststellung eines objektes mittels körperschall, sowie deren verwendung.Info
- Publication number
- EP0463127A1 EP0463127A1 EP91900710A EP91900710A EP0463127A1 EP 0463127 A1 EP0463127 A1 EP 0463127A1 EP 91900710 A EP91900710 A EP 91900710A EP 91900710 A EP91900710 A EP 91900710A EP 0463127 A1 EP0463127 A1 EP 0463127A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- intensity
- sound
- output signal
- signal
- evaluation circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000011156 evaluation Methods 0.000 claims abstract description 24
- 238000001514 detection method Methods 0.000 claims description 8
- 239000000758 substrate Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 6
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract 1
- 230000000644 propagated effect Effects 0.000 abstract 1
- 230000011664 signaling Effects 0.000 description 6
- 230000001960 triggered effect Effects 0.000 description 6
- 238000013459 approach Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000003137 locomotive effect Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L29/00—Safety means for rail/road crossing traffic
- B61L29/24—Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning
- B61L29/28—Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning electrically operated
- B61L29/32—Timing, e.g. advance warning of approaching train
-
- 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
- B61L1/02—Electric devices associated with track, e.g. rail contacts
- B61L1/06—Electric devices associated with track, e.g. rail contacts actuated by deformation of rail; actuated by vibration in rail
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L29/00—Safety means for rail/road crossing traffic
- B61L29/08—Operation of gates; Combined operation of gates and signals
- B61L29/18—Operation by approaching rail vehicle or train
- B61L29/22—Operation by approaching rail vehicle or train electrically
- B61L29/222—Operation by approaching rail vehicle or train electrically using conductor circuits with separate contacts or conductors
- B61L29/224—Operation by approaching rail vehicle or train electrically using conductor circuits with separate contacts or conductors using rail contacts
Definitions
- the invention relates to an arrangement for detecting an object with a structure-borne sound sensor for detecting the structure-borne sound generated by the object and transmitted to the sensor in a sound-conducting medium, and with an evaluation circuit which receives an output signal from the sensor and a warning signal emits when this output signal fulfills predetermined criteria, and a use of this arrangement, in particular for the detection of an approaching vehicle.
- a structure-borne sound sensor for detecting the structure-borne sound generated by the object and transmitted to the sensor in a sound-conducting medium
- an evaluation circuit which receives an output signal from the sensor and a warning signal emits when this output signal fulfills predetermined criteria
- Such an arrangement is known for example from CH 643 078. It is used to identify a burglar when trying to break through a wall or safe door by detecting the structure-borne sound vibrations transmitted in the wall, wall or door as a sound-conducting medium to the structure-borne sound sensor and processing them by the evaluation circuit.
- the signal evaluation in this arrangement takes place in such a way that the vibrations occurring during an attempted break-in are reliably distinguished from disturbing vibrations from the environment and faulty alarm signaling is avoided.
- the aim here is to suppress signaling until it is ensured that the structure-borne noise received was really caused by an attempted break-in.
- the object of the invention is to further develop the above-mentioned arrangements for the detection of an object by means of the structure-borne noise generated by the object in such a way that an object with steadily increasing or decreasing intensity of the structure-borne noise generated also signals reliably in any case and also in the presence of other interference vibrations becomes.
- this object is achieved in that the evaluation circuit is set up to send a signal to a warning device if the output signal of the structure-borne sound sensor has a predetermined change in intensity in a predetermined time, e.g. if the intensity between two points in time exceeds a predetermined threshold.
- the evaluation circuit checks the intensity periodically at regular time intervals using a comparator and triggers a warning signal if the intensity has exceeded a threshold value between at least two successive measurement times, and if the warning signal is maintained until the intensity between two later measurement times has fallen below a predetermined threshold.
- a warning signal is triggered when the intensity of the structure-borne noise has successively passed the two threshold values in a specific frequency range at predetermined time intervals, which is an unmistakable sign for an object with a continuously increasing intensity of the structure-borne noise generated.
- Such an arrangement can advantageously be used, for example, for the detection of an approaching vehicle.
- a rail vehicle e.g. a train or a locomotive on a track
- the structure-borne noise transducers are attached to the rails and register the structure-borne noise generated by the train and transmitted via the rails to the measuring location, the intensity of which increases steadily as a train approaches.
- the special signal evaluation ensures that a warning signal is triggered with the greatest possible certainty, even if there are noises, but that a certain selectivity is nevertheless guaranteed, so that an accident with usually catastrophic consequences can be avoided with greater certainty than if one relies on frequently unreliable human observation, in particular under unfavorable weather conditions, such as fog, or in the event of fatigue or other misconduct on the part of the security personnel.
- FIG. 1 shows an embodiment of an arrangement for signaling an approaching train at a remote track construction site with an associated evaluation circuit in a schematic representation
- Fig. 2 is a functional diagram for signal evaluation for warning signaling
- FIG. 3 shows a functional diagram of another signal evaluation circuit.
- FIG. 1 shows an arrangement for ascertaining an object in the form of a train 2 approaching a track construction site B on a track 1.
- the train 2 or the locomotive generates a characteristic structure-borne noise in the rails 1 ", which is transmitted via the rails as a sound-conducting medium with sound speed, ie with a few k / sec from the train 2 to the construction site B.
- a structure-borne sound sensor 3 is fixed, that is, in good sound-conducting contact, it is expedient to provide a sound sensor with a piezoelectric acoustic / electrical transducer, or a structure-borne sound sensor of another known design Output signal from which is fed to a signal evaluation circuit C.
- the evaluation circuit C has a frequency element 4 at its input, which has a frequency passband that is adapted to the frequency spectrum of a moving train and is preferably selected in the kHz range.
- the output signal is then fed to a time discriminator 5, which is controlled by a clock generator 6.
- the time discriminator generates two output signals for the intensity of the structure-borne noise recorded in the selected frequency range at two different times. These two signals, which are time-shifted relative to one another, are applied to the inputs of a comparator 7, which continuously compares the intensities of two successive signal intensities with one another and sends a signal to a warning device 8 as soon as the two intensities differ by a predetermined amount.
- This can be the triggering or activation of a doublet signal for the construction team if the intensity when a train approaches a certain amount has risen, or to reset or switch off the warning signal when the intensity drops when a train moves away.
- FIG. 1 shows an example of a functional diagram of the evaluation circuit C.
- the curve shows the time course of the intensity I of the output signal of the sensor 3 in the selected frequency range.
- the comparator 7 of the evaluation circuit compares the intensities at successive times t1, t2, t3 ... etc., and in particular determines whether a predetermined threshold value T has been exceeded at two times.
- the threshold value T was exceeded briefly between the measuring times t1 and t2, for example as a result of a brief action such as a blow to the rail, but the intensity for both measuring times is below the threshold value, so that in this case no warning signal is triggered .
- the intensity gradually increases and crosses the threshold value T between t2 and t3.
- FIG. 3 shows an advantageous development of the invention using an analog functional diagram. Two staggered threshold values T1 and T2 are provided for the intensity I. As long as the intensity remains below the lower threshold Tl, there is no reaction.
- a prewarning signal is triggered first, for example a warning device is activated and made ready for operation. If the intensity drops below the threshold T1 at time t4, the prewarning signal is reset until it is activated again, for example at time t5, because the threshold is exceeded again. If the intensity then increases further beyond the upper threshold value T2, for example at the measurement time t6, the main warning signal is triggered at this point in time and the approach of a train is thus signaled.
- the evaluation device C can also be constructed differently within the scope of the inventive concept. In order to fulfill its function, it must be set up to signal a predetermined increase (or decrease) in the output signal of the structure-borne noise sensor in a predetermined period.
- the evaluation can also advantageously be carried out using a microprocessor. Instead of digital, the evaluation can also be carried out analog.
- the discriminator 5 can at exceeded, a lower threshold Tl activate a timer which zögerunszeit the discriminator made to check if the signal has exceeded at which time the upper threshold T2, or after a predetermined Ver ⁇ particular within a ' Time window .this. Threshold T2 exceeds.
- the invention can also be used for the detection of other objects, provided that they cause structure-borne noise with a continuously increasing intensity at a remote measuring location, e.g. for signaling the approach of road vehicles, e.g. Tracked vehicles to a specific location by detecting ground vibrations and triggering appropriate measures
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Electrophonic Musical Instruments (AREA)
- Toys (AREA)
- Examining Or Testing Airtightness (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH96/90A CH679847A5 (de) | 1990-01-12 | 1990-01-12 | |
CH96/90 | 1990-01-12 | ||
PCT/CH1991/000001 WO1991010584A1 (de) | 1990-01-12 | 1991-01-03 | Anordnung zur feststellung eines objektes mittels körperschall, sowie deren verwendung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0463127A1 true EP0463127A1 (de) | 1992-01-02 |
EP0463127B1 EP0463127B1 (de) | 1994-09-14 |
Family
ID=4179161
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91900710A Expired - Lifetime EP0463127B1 (de) | 1990-01-12 | 1991-01-03 | Anordnung zur feststellung eines objektes mittels körperschall, sowie deren verwendung |
Country Status (8)
Country | Link |
---|---|
US (1) | US5265831A (de) |
EP (1) | EP0463127B1 (de) |
JP (1) | JPH04504241A (de) |
AT (1) | ATE111404T1 (de) |
CA (1) | CA2049023A1 (de) |
CH (1) | CH679847A5 (de) |
DE (1) | DE59102905D1 (de) |
WO (1) | WO1991010584A1 (de) |
Families Citing this family (36)
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DE4428784A1 (de) * | 1994-08-13 | 1996-02-15 | Ee Signals Gmbh & Co Kg | Verfahren zur Erfassung von Gefahrenquellen |
US5713540A (en) * | 1996-06-26 | 1998-02-03 | At&T Corp. | Method and apparatus for detecting railway activity |
WO1998007610A1 (fr) * | 1996-08-20 | 1998-02-26 | The Nippon Signal Co., Ltd. | Generateur d'informations utilisant des ondes elastiques |
US5735491A (en) * | 1996-10-09 | 1998-04-07 | Michael D. Ray | Method and apparatus for detecting an approaching train by detecting a brake system status signal |
US5924651A (en) * | 1997-03-26 | 1999-07-20 | Penza; George Gregory | Tactile and audible warning system for railroad workers |
CA2208499A1 (en) | 1997-06-16 | 1998-12-16 | Hydro-Quebec | Electrically audible motorized wheel assembly and method thereof |
US6715354B2 (en) | 1998-02-24 | 2004-04-06 | Massachusetts Institute Of Technology | Flaw detection system using acoustic doppler effect |
JPH11342845A (ja) * | 1998-06-04 | 1999-12-14 | Mitsubishi Electric Corp | 列車検知装置及び列車位置検知システム、並びに列車接近警報発生装置 |
DE19826090A1 (de) * | 1998-06-12 | 1999-12-16 | Alcatel Sa | Verfahren und Vorrichtung zur Integritätsprüfung eines schienengebundenen Fahrzeugverbands |
US6035719A (en) * | 1998-08-05 | 2000-03-14 | Kabushiki Kaisha Alpha Tsushin | Noise/vibration measuring and disclosing system |
DE19858937A1 (de) * | 1998-12-08 | 2000-06-15 | Gerd Klenke | Verfahren und Einrichtung zum Überwachen des Schienenverkehrs |
US6728515B1 (en) | 2000-02-16 | 2004-04-27 | Massachusetts Institute Of Technology | Tuned wave phased array |
US6416021B2 (en) * | 2000-05-30 | 2002-07-09 | George Jefferson Greene, Jr. | Locomotive whistle controlled railroad grade crossing warning system |
US6833554B2 (en) * | 2000-11-21 | 2004-12-21 | Massachusetts Institute Of Technology | Laser-induced defect detection system and method |
JP2006500267A (ja) * | 2002-09-20 | 2006-01-05 | ジュリー,ブレント,フェリックス | 金属部品の応力試験のための装置および方法 |
US6951132B2 (en) * | 2003-06-27 | 2005-10-04 | General Electric Company | Rail and train monitoring system and method |
US20050183900A1 (en) * | 2004-01-28 | 2005-08-25 | Gerold Goertzen | Wheelchair |
WO2005120924A1 (en) * | 2004-06-11 | 2005-12-22 | Stratech Systems Limited | Method and system for rail track scanning and foreign object detection |
US7481400B2 (en) * | 2005-07-01 | 2009-01-27 | Portec, Rail Products Ltd. | Railway wheel sensor |
CN1887628B (zh) * | 2006-07-24 | 2010-07-07 | 北京交通大学 | 无人值守铁路平交道口声控自动预警装置及其方法 |
DE102007006833A1 (de) * | 2007-02-07 | 2008-08-14 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Vorrichtung und Verfahren zum Auslösen von Aktionen |
US8423240B2 (en) * | 2008-06-30 | 2013-04-16 | International Electronic Machines Corporation | Wireless railroad monitoring |
DE102008046565A1 (de) * | 2008-09-10 | 2010-03-18 | Siemens Aktiengesellschaft | Vorrichtung und Verfahren zur Detektion eines Zuges |
JP4703788B2 (ja) * | 2009-07-02 | 2011-06-15 | パナソニック株式会社 | 車両位置検出装置及び車両位置検出方法 |
GB0915322D0 (en) | 2009-09-03 | 2009-10-07 | Westinghouse Brake & Signal | Railway systems using fibre optic hydrophony systems |
NO331979B1 (no) * | 2010-09-17 | 2012-05-14 | Stiftelsen Norsar | System og metode for tidlig deteksjon av tog |
AU2015203583B2 (en) * | 2010-09-17 | 2017-06-22 | Wavetrain Systems | System and method for early train detection |
RU2457135C2 (ru) * | 2010-12-03 | 2012-07-27 | Открытое акционерное общество "Научно-исследовательский институт технической физики и автоматизации" (ОАО "НИИТФА") | Устройство для контроля безопасности железнодорожной транспортировки |
KR20130001652A (ko) * | 2011-06-27 | 2013-01-04 | 엘에스산전 주식회사 | 무선열차검지유닛을 이용한 열차위치 검지 시스템 |
DE102012217627A1 (de) * | 2012-09-27 | 2014-03-27 | Siemens Aktiengesellschaft | Verfahren zum Betreiben eines Schienenfahrzeugs in einem Eisenbahnsystem und Eisenbahnsystem |
DE102014013472A1 (de) * | 2013-09-30 | 2015-04-02 | Hella Kgaa Hueck & Co. | Verfahren zur Erkennung und Klassifikation von Schadensereignissen an Kraftfahrzeugen und Vorrichtung hierfür |
CA2944463C (en) * | 2014-03-31 | 2023-03-21 | Vossloh Signaling, Inc. | Train direction detection apparatus and method |
EP3325325B1 (de) * | 2015-07-17 | 2023-09-06 | Harsco Technologies LLC | Schienenwarnsystem |
DE102016108273A1 (de) * | 2016-05-04 | 2017-11-09 | senvisys UG (haftungsbeschränkt) | Verfahren zur Auswertung von Signalen wenigstens eines Vibrationssensors |
WO2020047280A2 (en) * | 2018-08-30 | 2020-03-05 | Voestalpine Signaling Usa Inc. | Railcar acoustic monitoring system and method of use |
AT524382B1 (de) * | 2020-10-16 | 2022-07-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Verfahren und System zur Ermittlung einer Erschütterungsübertragung im Bereich eines Gleises |
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GB190321895A (en) * | 1903-10-12 | 1904-03-17 | Walter Edward Joseph Knight | Improvements relating to Tapping Casks and the like. |
US1788182A (en) * | 1928-08-22 | 1931-01-06 | Union Switch & Signal Co | Highway-crossing signal |
US1748965A (en) * | 1929-01-21 | 1930-03-04 | Watson Ernest | Railway-crossing signal |
US1834077A (en) * | 1930-07-30 | 1931-12-01 | Union Switch & Signal Co | Highway crossing signal |
US1864016A (en) * | 1930-12-15 | 1932-06-21 | Avertisseur Ferrovoie Soc D | Automatic signaling device operated by the oscillations of the rails |
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FR802209A (fr) * | 1934-12-29 | 1936-08-31 | Nouveau dispositif permettant de déceler, révéler, annoncer ou signaler l'approche d'un véhicule sur rails | |
US2346748A (en) * | 1941-10-08 | 1944-04-18 | Union Switch & Signal Co | Control apparatus |
US2592163A (en) * | 1949-09-07 | 1952-04-08 | Sydney W Madden | Audible railroad crossing warning signal |
US3978447A (en) * | 1975-07-01 | 1976-08-31 | Lawrence Peska Associates, Inc. | Safety transmitting device |
US4167877A (en) * | 1978-05-17 | 1979-09-18 | Avery Hazelton H | Method and instrument for vibration analysis |
CH643078A5 (de) * | 1978-11-30 | 1984-05-15 | Cerberus Ag | Verfahren und anordnung zur einbruchmeldung. |
FR2463707A1 (fr) * | 1979-08-23 | 1981-02-27 | Sncf | Procede et dispositif de detection d'eboulement(s) sur voie ferroviaire ou d'approche des trains |
SU1066867A1 (ru) * | 1981-06-02 | 1984-01-15 | Московский Государственный Проектно-Изыскательский Институт "Мосгипротранс" | Путевой извещатель |
SU1066868A1 (ru) * | 1982-04-02 | 1984-01-15 | Lazarenko Yurij V | Устройство дл оповещени о приближении поезда |
SU1175778A1 (ru) * | 1984-03-16 | 1985-08-30 | Харьковский Государственный Институт Промышленного Транспорта | Устройство дл оповещени о приближении подвижного состава |
US4887032A (en) * | 1988-05-02 | 1989-12-12 | Ford Motor Company | Resonant vibrating structure with electrically driven wire coil and vibration sensor |
US4932618A (en) * | 1989-04-11 | 1990-06-12 | Rockwell International Corporation | Sonic track condition determination system |
-
1990
- 1990-01-12 CH CH96/90A patent/CH679847A5/de not_active IP Right Cessation
-
1991
- 1991-01-03 WO PCT/CH1991/000001 patent/WO1991010584A1/de active IP Right Grant
- 1991-01-03 AT AT91900710T patent/ATE111404T1/de not_active IP Right Cessation
- 1991-01-03 JP JP3501167A patent/JPH04504241A/ja active Pending
- 1991-01-03 CA CA002049023A patent/CA2049023A1/en not_active Abandoned
- 1991-01-03 EP EP91900710A patent/EP0463127B1/de not_active Expired - Lifetime
- 1991-01-03 DE DE59102905T patent/DE59102905D1/de not_active Expired - Fee Related
- 1991-01-31 US US07/752,578 patent/US5265831A/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9110584A1 * |
Also Published As
Publication number | Publication date |
---|---|
CA2049023A1 (en) | 1991-07-13 |
EP0463127B1 (de) | 1994-09-14 |
WO1991010584A1 (de) | 1991-07-25 |
CH679847A5 (de) | 1992-04-30 |
DE59102905D1 (de) | 1994-10-20 |
US5265831A (en) | 1993-11-30 |
ATE111404T1 (de) | 1994-09-15 |
JPH04504241A (ja) | 1992-07-30 |
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