DE10038731B4 - Arrangement of an optical image scanner for the detection of large objects, in which the detection objects are moved - Google Patents
Arrangement of an optical image scanner for the detection of large objects, in which the detection objects are moved Download PDFInfo
- Publication number
- DE10038731B4 DE10038731B4 DE2000138731 DE10038731A DE10038731B4 DE 10038731 B4 DE10038731 B4 DE 10038731B4 DE 2000138731 DE2000138731 DE 2000138731 DE 10038731 A DE10038731 A DE 10038731A DE 10038731 B4 DE10038731 B4 DE 10038731B4
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- Prior art keywords
- line
- cameras
- vehicle
- arrangement according
- scanner arrangement
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C11/00—Photogrammetry or videogrammetry, e.g. stereogrammetry; Photographic surveying
- G01C11/02—Picture taking arrangements specially adapted for photogrammetry or photographic surveying, e.g. controlling overlapping of pictures
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Optics & Photonics (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
Eine optische Scanner-Anordnung zur Analyse von Zug- und Fahrzeugunterböden bei laufendem Verkehr dadurch gekennzeichnet, dass gemäß
Description
Die Erfindung beschreibt eine Scanner-Anordnung, bei der große Objekte wie z.B. Autos, LKWs, Busse und Züge auf ihrer Unterseite mit hoher Bildqualität optisch erfasst werden können, und dabei die Anordnung der optischen und elektronischen Erfassungskomponenten so gewählt wird, dass für den Einbau nur geringfügige Baumaßnahmen notwendig sind und gleichzeitig eine einfache Wartung möglich ist.The invention describes a scanner arrangement, at the big one Objects such as Cars, trucks, buses and trains on their bottom with high image quality can be optically recorded, and the arrangement of the optical and electronic detection components so chosen will that for that Installation only minor construction work are necessary and simple maintenance is possible at the same time.
Für Wartung und Kontrolle, von Fahrzeugen und Zugeinheiten ist die Inspektion der Fahrzeugunterseite, des Fahrzeugbodens notwendig. Eine verbreitete aber veraltete und unpraktische Methode ist die Inspektionsgrube.For Maintenance and control of vehicles and train units is the inspection the underside of the vehicle, the floor of the vehicle. A common one but the inspection pit is outdated and impractical.
Zur optischen manuellen Kontrolle des Fahrzeugbodens werden vielfach Spiegel oder Fernsehkameras verwendet.For optical manual control of the vehicle floor, mirrors or television cameras are often used.
Als Stand der Technik haben die bisherigen technischen Lösungen nachfolgend beschriebene Probleme, die mit der vorliegenden Erfindung überwunden werden sollen.As the state of the art, the previous technical solutions Problems described below that are overcome with the present invention should be.
- – Inspektionsgruben, bei denen Personen den Unterboden kontrollieren – Diese Lösungen sind bezüglich der Baumaßnahmen relativ teuer, da sie ca. 1.8 m tief sein müssen. Wegen der Personalkosten in Verbindung mit dem geringen Fahrzeugdurchsatz ist der Unterhalt aufwendig. Im laufenden Verkehr ist diese Lösung absolut unbrauchbar. Es ist über die gesamte Unterbodenbreite nicht möglich, mit einer gleichbleibenden Grubenbreite sowohl LKW's als auch PKW's zu kontrollieren.- inspection pits, where people check the underbody - These solutions are regarding construction work relatively expensive because they have to be about 1.8 m deep. Because of the personnel costs in connection with the low vehicle throughput is maintenance consuming. This solution is absolutely useless in traffic. It is over the entire underbody width is not possible, with a constant pit width both trucks and also control cars.
- – Inspektionsgruben, bei denen 2D Video-Kameras den Unterboden kontrollieren – Dieser Lösungsansatz ist z.B. beim EURO-TUNNEL realisiert. Die Grube muss jetzt nicht mehr so tief wie beim vorherigen Lösungsansatz sein, da die Video-Kamera ein Weitwinkel-Objektiv haben kann. Im Prinzip kann eine solche Grube auch so klein sein, dass ein Betrieb bei laufendem Verkehr möglich ist.- inspection pits, where 2D video cameras control the underbody - this one approach is e.g. realized at EURO-TUNNEL. The pit doesn't have to now be as deep as the previous approach because of the video camera can have a wide angle lens. In principle, such Pit must also be so small that it can be operated while traffic is running.
- – Die Nachteile dieser Lösung sind die Verschmutzungsanfälligkeit, die relativ geringe Auflösung, die Verzerrungen durch das Weitwinkelobjektiv und die Abschattungsprobleme (eine Kamera); die Verzerrungen des Weitwinkelobjektives machen es auch nahezu unmöglich, mehrere Teilbilder eines darüber hinwegfahrenden LKW's richtig zusammenzusetzen.- The Disadvantages of this solution are the susceptibility to pollution, the relatively low resolution, the distortions caused by the wide-angle lens and the shading problems (a camera); make the distortions of the wide-angle lens it is also almost impossible several drawing files one above trucks driving away assemble correctly.
Optische Bildscanner auch mit Zeilenkameras
werden bereits für
verschiedene Anwendungsfälle
zur Erkennung von strukturierten Flächen eingesetzt, wie in der
Aufgabe der Erfindung ist es, durch die entsprechende Anordnung der optischen und mechanischen Komponenten ein hochauflösendes Unterboden-Bild eines beliebig langen Fahrzeuges (LKW, Zug), bei laufendem Verkehr, bei beliebigen Beleuchtungsverhältnissen, mit geringsten optischen Verzerrungen, mit geringer Verschmutzungsanfälligkeit zu erhalten, wobei die Gesamtanlage wartungs- und montagefreundlich sein soll.The object of the invention is through the corresponding arrangement of the optical and mechanical components a high resolution Underbody image of a vehicle of any length (truck, train), at ongoing traffic, under any lighting conditions, with minimal optical distortion, with low susceptibility to contamination to maintain, the entire system easy to maintain and install should be.
Die erfindungsgemäße Lösung enthält mindestens zwei hochauflösende Zeilenkameras, welche durch einen Schlitz in der Fahrbahn oder unter den Zugschienen den Fahrzeugunterboden quer zur Fahrtrichtung als Zeilenbilder aufnehmen.The solution according to the invention contains at least two high-resolution line cameras, which through a slot in the carriageway or under the train rails take the vehicle underbody across the direction of travel as line images.
Damit keine verzerrenden Weitwinkelobjektive verwendet werden müssen, wird der Abstand der beiden Kameras zum Fahrzeugunterboden möglichst groß gewählt. Wenn dieser große Abstand durch eine tiefe Grube realisiert würde, entstünden hohe Baukosten und Wartungsprobleme; aus diesem Grund sind bei der vorgeschlagenen Lösung die Strahlengänge der beiden Kameras mit einem langgestreckten Spiegel (quer zur Fahrbahn und unter dem Fahrbahnschlitz) einmal gefaltet. Man erreicht damit, dass die Grube flach und langgestreckt gebaut werden kann. Die beiden Zeilenkameras sind so justiert, dass sie ihre beiden Zeilenbilder in einem genau definierten Abstand (S) von einigen mm oder cm vom Fahrzeugunterboden aufnehmen. Die Zeilenkameras können nun laufend mit hoher Abtastgeschwindigkeit Zeilenbilder vom Fahrzeugunterboden der sich darüber bewegenden Fahrzeuge aufnehmen. Da die Fahrzeuggeschwindigkeit zunächst unbekannt und variabel ist, muss nun ein spezielles Verfahren angewendet werden, damit die Zeilenbilder in der elektronischen Auswerteeinheit richtig zusammengesetzt werden können. Bei einem stehenden Fahrzeug können die gerade aufgenommenen Zeilenbilder nur einmal in das zusammengesetzte zweidimensionale Unterbodenbild als kleiner Abschnitt dargestellt werden. Die einzelnen Zeilenbilder können über ein Bild-Software-Programm nur bei bekannter Fahrzeuggeschwindigkeit oder Fahrzeugposition richtig zusammengesetzt werden; diese Informationen werden mit den beiden versetzt abtastenden Zeilenkameras unter Zuhilfenahme eines Korrelations-Verfahrens ermittelt.So that no distorting wide-angle lenses have to be used, the distance between the two cameras and the vehicle underbody is chosen to be as large as possible. If this great distance were realized by a deep pit, there would be high construction costs and maintenance problems; For this reason, in the proposed solution, the beam paths of the two cameras are folded once with an elongated mirror (across the lane and under the lane slot). This means that the pit can be built flat and elongated. The two line scan cameras are adjusted so that they take their two line pictures at a precisely defined distance (S) of a few mm or cm from the vehicle underbody. The line cameras can now continuously record line images from the vehicle underbody of the vehicles moving above them at high scanning speed. Since the vehicle speed is initially unknown and variable, a special procedure must now be used so that the line images in the electro African evaluation unit can be assembled correctly. When the vehicle is stationary, the line images just recorded can only be displayed once in the composite two-dimensional underbody image as a small section. The individual line images can only be put together correctly using an image software program if the vehicle speed or vehicle position is known; this information is determined with the two offset scanning line cameras with the aid of a correlation method.
Die vorgeschlagene Lösung ist preiswerter als eine Inspektionsgrube, sie hat eine höhere Qualität, das Untersuchungsergebnis wird dokumentiert und ist daher auch zu einem späteren Zeitpunkt überprüfbar. Die vorgeschlagene Lösung funktioniert auch bei laufendem Verkehr, d.h. der vorgeschlagene Scanner kann in eine normale Straße oder einen Schienenstrang eingebaut werden. Typische Einsatzbereiche für solche Scanner-Einheiten sind Service, Qualitätskontrolle, Qualitätsdokumentation, Analyse und Vergleiche bei der Bewertung des Fahrzeugunterbodens verschiedenster Fahrzeuge.The proposed solution is cheaper than an inspection pit, it has a higher quality, the test result is documented and can therefore also be checked at a later date. The suggested solution also works when traffic is running, i.e. the proposed Scanner can be in a normal street or a track to be built in. Typical areas of application for such scanner units are service, quality control, Quality documentation, analysis and comparisons in the evaluation of the vehicle underbody of various Vehicles.
An einem Beispiel soll die erfinderische
Lösung,
in
In
In
In
Die beiden Zeilenkameras (
- 11
- Ablauf-Rinne am Grubenboden für eingedrungenes WasserDrain channel on the pit floor for penetrated water
- 22
- kleine Gruben Abdeckplatte mit Abtropfkantesmall Pit cover plate with drip edge
- 33
- große Gruben Abdeckplatte mit Abtropfkantelarge pits Cover plate with drip edge
- 44
- Darstellung der beiden Zeilenkameras (4A, 4B → Kamera A,B)presentation of the two line scan cameras (4A, 4B → camera A, B)
- 55
- Umlenkspiegel, der etwas kürzer als die Fahrbahnbreite ist.a reflecting mirror, which is a little shorter than the lane width is.
- 66
- Grubenboden mit Gefällepit floor with gradient
- 77
- Grubenboden mit Gefällepit floor with gradient
- 88th
- Die Abtropfkanten der AbdeckplattenThe Drip edges of the cover plates
- 99
- Rechner zur Erfassung, Verarbeitung und Ausgabe der Bilddatencomputer for capturing, processing and outputting the image data
- 1010
- PC oder Monitor zur Abfrage bzw. Weiterverarbeitung der BilddatenPC or monitor for querying or further processing of the image data
- 1111
- Versatz der Bildebenen zwischen Kamera A und Boffset the image planes between camera A and B
- 1212
- Auftreffstelle von abtropfendem Schmutzwasser (siehe Abtropfkanten)impingement of dripping dirty water (see dripping edges)
- 1313
- Darstellung eines über die Grube fahrenden Autospresentation one about cars driving the pit
Claims (9)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2000138731 DE10038731B4 (en) | 2000-08-01 | 2000-08-01 | Arrangement of an optical image scanner for the detection of large objects, in which the detection objects are moved |
DE2001134975 DE10134975B4 (en) | 2000-08-01 | 2001-07-24 | Arrangement of an optical image scanner for detecting large objects, in which the detection objects are moved |
DE10143615A DE10143615B4 (en) | 2000-08-01 | 2001-09-06 | Arrangement of an optical image scanner for detecting large objects, in which the detection objects are moved |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2000138731 DE10038731B4 (en) | 2000-08-01 | 2000-08-01 | Arrangement of an optical image scanner for the detection of large objects, in which the detection objects are moved |
Publications (2)
Publication Number | Publication Date |
---|---|
DE10038731A1 DE10038731A1 (en) | 2002-02-21 |
DE10038731B4 true DE10038731B4 (en) | 2004-04-29 |
Family
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Application Number | Title | Priority Date | Filing Date |
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DE2000138731 Expired - Fee Related DE10038731B4 (en) | 2000-08-01 | 2000-08-01 | Arrangement of an optical image scanner for the detection of large objects, in which the detection objects are moved |
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DE (1) | DE10038731B4 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10348534A1 (en) * | 2003-10-18 | 2005-05-25 | Move & Traffic Controls Gmbh | Optical image scanner with a beam guide through a light guide for detecting large objects, in which the detection objects are moved |
DE102012209224A1 (en) * | 2012-05-31 | 2013-12-05 | Robert Bosch Gmbh | Device and method for taking pictures of a vehicle underbody |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2276997A (en) * | 1993-04-08 | 1994-10-12 | Kollmorgen Corp | Scanning rangefinder |
DE4411994A1 (en) * | 1994-04-11 | 1995-11-02 | Dornier Gmbh | Automatic computer based detection and classification of road or rail traffic |
DE4321666C2 (en) * | 1993-06-30 | 1996-07-18 | Rauschenberger Gmbh U Co | Device for measuring surface structures of patterns |
DE19635934A1 (en) * | 1996-09-05 | 1998-03-12 | Guenter Prof Dr Ing Kompa | Laser radar speed measurement method for road traffic |
DE19757848A1 (en) * | 1997-12-24 | 1999-07-08 | Johann Hipp | Optical detection apparatus |
DE19919061A1 (en) * | 1999-04-27 | 2000-11-02 | Robot Foto Electr Kg | Traffic monitoring device with polarization filters |
DE19921650A1 (en) * | 1999-05-10 | 2000-11-30 | Continental Ag | Demonstrating and/or analysing motion profile elements of tyre having coloured markings by detecting light reflected at contact between glass plate and tyre profile |
DE19730787C2 (en) * | 1997-07-18 | 2000-12-07 | Continental Ag | Device and method for demonstrating and / or determining the movement of tread elements of a tire |
-
2000
- 2000-08-01 DE DE2000138731 patent/DE10038731B4/en not_active Expired - Fee Related
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2276997A (en) * | 1993-04-08 | 1994-10-12 | Kollmorgen Corp | Scanning rangefinder |
DE4321666C2 (en) * | 1993-06-30 | 1996-07-18 | Rauschenberger Gmbh U Co | Device for measuring surface structures of patterns |
DE4411994A1 (en) * | 1994-04-11 | 1995-11-02 | Dornier Gmbh | Automatic computer based detection and classification of road or rail traffic |
DE19635934A1 (en) * | 1996-09-05 | 1998-03-12 | Guenter Prof Dr Ing Kompa | Laser radar speed measurement method for road traffic |
DE19730787C2 (en) * | 1997-07-18 | 2000-12-07 | Continental Ag | Device and method for demonstrating and / or determining the movement of tread elements of a tire |
DE19757848A1 (en) * | 1997-12-24 | 1999-07-08 | Johann Hipp | Optical detection apparatus |
DE19919061A1 (en) * | 1999-04-27 | 2000-11-02 | Robot Foto Electr Kg | Traffic monitoring device with polarization filters |
DE19921650A1 (en) * | 1999-05-10 | 2000-11-30 | Continental Ag | Demonstrating and/or analysing motion profile elements of tyre having coloured markings by detecting light reflected at contact between glass plate and tyre profile |
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Publication number | Publication date |
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DE10038731A1 (en) | 2002-02-21 |
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