EP2396208A1 - Arrangement and method for detecting heat radiation emitting objects on rail tracks - Google Patents
Arrangement and method for detecting heat radiation emitting objects on rail tracksInfo
- Publication number
- EP2396208A1 EP2396208A1 EP10702860A EP10702860A EP2396208A1 EP 2396208 A1 EP2396208 A1 EP 2396208A1 EP 10702860 A EP10702860 A EP 10702860A EP 10702860 A EP10702860 A EP 10702860A EP 2396208 A1 EP2396208 A1 EP 2396208A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sensors
- pir
- sensor
- track body
- infrared detectors
- 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.)
- Withdrawn
Links
- 230000005855 radiation Effects 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000001514 detection method Methods 0.000 claims abstract description 20
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000003491 array Methods 0.000 claims 1
- 229920000582 polyisocyanurate Polymers 0.000 description 29
- 230000001960 triggered effect Effects 0.000 description 7
- 230000001413 cellular effect Effects 0.000 description 2
- OAWXYINGQXLWOE-UHFFFAOYSA-N (2-acetyloxybenzoyl) 2-acetyloxybenzoate Chemical compound CC(=O)OC1=CC=CC=C1C(=O)OC(=O)C1=CC=CC=C1OC(C)=O OAWXYINGQXLWOE-UHFFFAOYSA-N 0.000 description 1
- 241001494479 Pecora Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 210000003850 cellular structure Anatomy 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 244000144992 flock Species 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L23/00—Control, warning, or like safety means along the route or between vehicles or vehicle trains
- B61L23/04—Control, warning, or like safety means along the route or between vehicles or vehicle trains for monitoring the mechanical state of the route
- B61L23/041—Obstacle detection
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0022—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiation of moving bodies
Definitions
- the invention relates to an arrangement and method and to the use of sensors for detecting objects emitting heat radiation on track bodies of rail vehicles.
- the invention has for its object to provide a hedge of rail tracks for rail vehicles, which combines low false alarms and high detection reliability at reasonable cost.
- cell-shaped sensor arrangements which have a plurality of passive, infrared-sensitive detectors / PIR.
- Such cellular sensors are positioned opposite poles on masts on the track body along the tracks opposite a track.
- the cell-shaped sensors are arranged horizontally. This orientation for achieving a spatial resolution or an angular resolution is carried out according to a line scan camera.
- a two-dimensional array with focusing optics can also be used, for example to produce a two-dimensional image of the heat radiation in the track area.
- the detection reliability can be further increased and the number of false alarms can be reduced.
- both line sensors or sensor arrangements are arranged at a defined distance, for example at respectively opposite masts, a depth resolution / distance value can be achieved by distance calculation via the triangulation principle if the signals from both detectors are logically linked to one another.
- a line sensor corresponding to the passive infrared detectors / PIRs lying next to one another in the sensors, horizontal compartments with adjacent detection channels can be formed, wherein an objective can be connected to each PIR in order to focus incoming infrared rays onto the PIR.
- a subdivision in the vertical direction can additionally be utilized, whereby additionally the information about the object height can be detected and differentiated.
- an additional two-dimensional camera in the case of a detected object, a display of a two-dimensional image in a rail vehicle can be made.
- the invention finds particular application in the monitoring of high speed trains for high speed trains.
- an alarm is triggered in particular only when, by a corresponding pair of two sensors S1, S2, one of them having at least one PIR, which is numbered parallel to is aligned with a track body, detects an object and, at the same time, on the sensor opposite the track body, the detected object is detected by a further inside PIR, which is provided with a number that is greater than one.
- the alarm is triggered when an object in a vertical column of the sensor, which is aligned parallel to the track, is detected by the opposite sensor through a more in-column of the sensor.
- FIG. 1 shows a track body 20 with sensors S 1, S 2, and an object 10 located on the track body
- FIG. 2 shows a highly abstracted view of one
- FIG. 3 shows a schematic view of the sensor S1 with a corresponding numbering of the passive infrared detectors / PIR (10).
- a PIR responds positively or turns ON / HIGH if the average total radiation power that strikes a PIR sensor element changes. Due to adjustable time constants, it can be achieved that only the events which exceed an intensity threshold and are faster than a lower time limit lead to a switching process. If an object is located in a detection channel for a long time, the radiation power that is now being used is used as a reference.
- a direct forwarding of the radiant power detected at the infrared element in the form of an analog voltage value to an evaluation unit is also possible, if this is advantageous for the processing of the raw signals.
- the PIR works as a passive sensor with very low energy consumption. He does not need any active lighting or daylight for the operation.
- the PIR is influenced exclusively by each body or the heat radiation emanating from a body. This means that a PIR can be used without restrictions even in the dark.
- the cell-shaped sensor arrangements used according to the invention consisting of a plurality of PIR detectors, are preferably oriented along the alignment of track bodies. This means that they are mounted approximately in pairs on corresponding masts of the track body and are each aligned in the same direction of the track body.
- the cellular structure is level.
- the infrared radiation can be advantageously focused on a respective PIR sensor element, said radiation from a defined angle segment hits the lens. In this way, a horizontal spatial resolution is achieved or an angular resolution.
- the fact that both cell-shaped sensor arrangements are arranged at a defined distance on respectively opposite masts ensures that a depth resolution, ie in each case differentiated distance values between the PIR and the object, can be calculated according to the triangulation principle. This assumes that the signals from both detectors are logically linked together.
- a possible variant of an alarm logic is that the sensor pixels of a line sensor or the individual PIR elements are numbered consecutively, wherein in a cell-shaped sensor Sl, S2 a PIR element, which is aligned parallel to the tracks, receives the number 1. Assuming that two sensors are located opposite a track body, they are essentially symmetrical with respect to their detection zones. In other words, the count of the corresponding individual PIR elements with cell-like structure runs in each case from outside to inside, wherein the outer PIR with the number 1 parallel to the tracks are located or detected. Further PIR of a cellular sensor detect the track body and thus lie within each numbered with 1 sensor elements of the respective sensors Sl or S2, ie substantially above the track body.
- the sensors Sl, S2 are numbered in reverse order. An alarm is only triggered if one of the two sensors is triggered with the outer, numbered 1 infrared detector / PIR and, at the same time, an infrared detector / PIR of the opposite sensor with a higher numbering is triggered.
- a data fusion should take place for which an additional two-dimensional camera is used which displays a two-dimensional image, for example in the moving train.
- an additional two-dimensional camera is used which displays a two-dimensional image, for example in the moving train.
- the area in the camera image in which the sensor alarm was triggered can already be marked.
- FIG. 1 shows a track body 20 with two tracks constructed thereon.
- the track is electrified and has respective opposite masts 30 which carry corresponding contact wires for the corresponding power supply.
- sensors S1 and S2 are positioned at opposite positions relative to the track body, for example at the masts 30. These sensors detect substantially in the same direction.
- the sensors consist of several cell-shaped, passive infrared elements / PIR.
- the line sensors are horizontally aligned and span a horizontally extended fan with detection channels 40, 50.
- An object 10 on the right-hand track is a cow in this case.
- the object 10 is first detected by the sensor S2 at the outermost infrared detector / PIR, wherein Turn this ON. Furthermore, the object 10 is visible to the sensor Sl, but not in the outer infrared detector, which detects parallel to the corresponding track. In the sensor Sl, the object 10 is perceived, for example, in the detection channel 4. This at least double detection of an object 10 by the sensor S2 and by the sensor Sl leads to a significant signal security.
- Figure 2 shows a plan view of a track body 20, which has a width B of about 15 m. Shown are sensor Sl and sensor S2, with a symmetrical to the track and thus also to the tracks arrangement.
- the sensors consist of a plurality of individual infrared detectors, which are designed as passive infrared detectors. These line sensors are each horizontally aligned and clamp a substantially horizontal detection fan.
- the detection channels located therein, corresponding to the individual infrared elements, permit a lateral spatial resolution. From the existing symmetry conditions, distance values between an object and the sensors can thus be determined, for example, by triangulation.
- the normal mast spacing D is usually 200 meters.
- FIG. 3 shows an illustration of a cell-shaped sensor in plan view, in this case with the numbering sequence corresponding to the sensor S1 in FIG. 1.
- the No. 1 is aligned parallel to the upper track in FIG.
- the detection channels 2 to 6 close in the direction of the inner region of the track body.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200910008077 DE102009008077A1 (en) | 2009-02-10 | 2009-02-10 | Arrangement and method for the detection of heat radiation emitting objects on track bodies |
PCT/EP2010/051154 WO2010091970A1 (en) | 2009-02-10 | 2010-02-01 | Arrangement and method for detecting heat radiation emitting objects on rail tracks |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2396208A1 true EP2396208A1 (en) | 2011-12-21 |
Family
ID=42133418
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10702860A Withdrawn EP2396208A1 (en) | 2009-02-10 | 2010-02-01 | Arrangement and method for detecting heat radiation emitting objects on rail tracks |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2396208A1 (en) |
DE (1) | DE102009008077A1 (en) |
WO (1) | WO2010091970A1 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010047720A1 (en) | 2009-10-07 | 2011-10-13 | Kurt Michael Desch | Bathtub pull-out spray, with a, on the upper edge of the tub, or on a subsequent tray arranged on this plug-in receptacle, in the vertical Symmetrielinie a rotary handle for actuating the tub sealing plug is integrated |
US20150009331A1 (en) * | 2012-02-17 | 2015-01-08 | Balaji Venkatraman | Real time railway disaster vulnerability assessment and rescue guidance system using multi-layered video computational analytics |
FR3004574B1 (en) | 2013-04-16 | 2016-09-02 | Prodose | RAILWAY MONITORING DEVICE AND WORKING METHOD |
CN103569163A (en) * | 2013-11-12 | 2014-02-12 | 中国神华能源股份有限公司 | Train state monitoring system and train state monitoring method |
PL407675A1 (en) * | 2014-03-26 | 2015-09-28 | Amateo Spółka Z Ograniczoną Odpowiedzialnością | IRID system for the identification of object |
US10362293B2 (en) | 2015-02-20 | 2019-07-23 | Tetra Tech, Inc. | 3D track assessment system and method |
DE102017213261A1 (en) * | 2017-08-01 | 2019-02-07 | Siemens Aktiengesellschaft | Method and device for protecting a vehicle driver |
US10807623B2 (en) | 2018-06-01 | 2020-10-20 | Tetra Tech, Inc. | Apparatus and method for gathering data from sensors oriented at an oblique angle relative to a railway track |
US11377130B2 (en) | 2018-06-01 | 2022-07-05 | Tetra Tech, Inc. | Autonomous track assessment system |
CN113973731B (en) * | 2021-10-21 | 2022-09-23 | 湖南中医药大学 | Device for detecting active escape behavior of animal |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07228250A (en) * | 1994-02-21 | 1995-08-29 | Teito Kousokudo Kotsu Eidan | Intrack monitoring device and platform monitoring device |
JP3361399B2 (en) * | 1994-12-26 | 2003-01-07 | 株式会社日立製作所 | Obstacle detection method and device |
US5825412A (en) * | 1996-05-20 | 1998-10-20 | Esco Electronics Corporation | Video detection apparatus for monitoring a railroad crossing |
DE19746970B4 (en) * | 1997-10-24 | 2017-03-16 | Alcatel Lucent | Method for detecting obstacles in front of rail vehicles |
FR2781744B1 (en) * | 1998-07-30 | 2002-11-29 | Alstom Technology | ANTI-COLLISION SYSTEM FOR LEVELING |
DE29907285U1 (en) * | 1999-04-24 | 2000-09-14 | Steinel Gmbh & Co Kg | Device for motion detection |
JP4092438B2 (en) * | 1999-08-19 | 2008-05-28 | オプテックス株式会社 | Intrusion detection method and apparatus |
DE19958634A1 (en) * | 1999-12-04 | 2001-06-21 | Alcatel Sa | Procedure for recognizing obstacles on railroad tracks |
DE10141037C1 (en) * | 2001-08-20 | 2003-04-03 | Siemens Ag | Obstacle detection device |
US20070040070A1 (en) * | 2005-04-18 | 2007-02-22 | Bob Stevenson | Railroad crossing surveillance and detection system |
DE102006019941A1 (en) * | 2006-04-28 | 2007-10-31 | Pepperl + Fuchs Gmbh | Monitoring device for detection of persons, animals or articles, has deviating temperature against environment, particularly in area of doors, has passive infrared rays sensor unit with PIR sensor for detecting infrared-radiation |
CH702918B1 (en) * | 2007-04-25 | 2011-10-14 | Viacam S A R L | Control device and control of the bus and railway signaling. |
DE102007061952A1 (en) * | 2007-12-21 | 2008-06-12 | Daimler Ag | Vehicle mounted system to detect objects, i.e. pedestrians, has arrays of thermopiles to register their heat and determine their position |
-
2009
- 2009-02-10 DE DE200910008077 patent/DE102009008077A1/en not_active Withdrawn
-
2010
- 2010-02-01 EP EP10702860A patent/EP2396208A1/en not_active Withdrawn
- 2010-02-01 WO PCT/EP2010/051154 patent/WO2010091970A1/en active Application Filing
Non-Patent Citations (1)
Title |
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See references of WO2010091970A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102009008077A1 (en) | 2010-08-19 |
WO2010091970A1 (en) | 2010-08-19 |
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