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DE4406958A1 - Scanners for test objects - Google Patents

Scanners for test objects

Info

Publication number
DE4406958A1
DE4406958A1 DE4406958A DE4406958A DE4406958A1 DE 4406958 A1 DE4406958 A1 DE 4406958A1 DE 4406958 A DE4406958 A DE 4406958A DE 4406958 A DE4406958 A DE 4406958A DE 4406958 A1 DE4406958 A1 DE 4406958A1
Authority
DE
Germany
Prior art keywords
radiation
kev
beams
different
scanner
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
Application number
DE4406958A
Other languages
German (de)
Other versions
DE4406958B4 (en
Inventor
Hermann Dipl Phys Dr Ries
Patricia Dipl Ing Schall
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Smiths Heimann GmbH
Original Assignee
Heimann Systems GmbH
Heimann Systems GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Heimann Systems GmbH, Heimann Systems GmbH and Co KG filed Critical Heimann Systems GmbH
Priority to DE4406958A priority Critical patent/DE4406958B4/en
Priority to GB9504037A priority patent/GB2287164B/en
Publication of DE4406958A1 publication Critical patent/DE4406958A1/en
Application granted granted Critical
Publication of DE4406958B4 publication Critical patent/DE4406958B4/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V5/00—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
    • G01V5/20—Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects
    • G01V5/22—Active interrogation, i.e. by irradiating objects or goods using external radiation sources, e.g. using gamma rays or cosmic rays
    • G01V5/224—Multiple energy techniques using one type of radiation, e.g. X-rays of different energies

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • High Energy & Nuclear Physics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

A scanner for the examination of luggage 2 has at least two spatially separate penetrative beam generators 5, 6 by which the article to be examined may be irradiated with fan-shaped X-ray beams 3, 4 having different and optimised energy ranges. The difference in the energy distribution of the two beams can be further enhanced by using filters 13 and 14. The information detected from the different beams is correlated in an evaluation unit 11 and fed to a video display 12. <IMAGE>

Description

Die Erfindung betrifft einen Scanner für Prüfobjekte nach den Merkmalen des Oberbegriffs des Patentanspruchs 1.The invention relates to a scanner for test objects according to the Features of the preamble of claim 1.

Ein derartiger aus der EP 0 390 950 A1 bekannter Scanner wird beispielsweise zur Erfassung unzulässiger Gegenstände in dem jeweiligen Prüfobjekt, beispielsweise von Waffen, Schmuggelware oder Sprengstoffen benutzt.Such a scanner is known from EP 0 390 950 A1 For example, to record illegal objects in the respective test object, for example weapons, contraband or explosives.

Bei der Analyse der durchstrahlten Prüfobjekte stellt sich das Problem, daß u. a. auch Materialzusammensetzungen unterschieden werden müssen, um bestimmte Prüfobjekte identifizieren zu kön­ nen. Dieses wird durch die Analyse der Strahlung nach Durchdrin­ gen des Prüfgutes in zwei unterschiedlichen Strahlungsenergiebe­ reichen ermöglicht.This arises when analyzing the irradiated test objects Problem that u. a. also differentiated material compositions need to be able to identify certain test objects nen. This is done by analyzing the radiation according to Durchdrin test material in two different radiation energies allows rich.

Bei dem aus der EP 0 390 950 A1 bekannten Scanner werden die Strahlungsenergiebereiche durch Hin- und Herschalten der Ener­ gie eines einzigen Strahlungsgenerators erreicht. Dieses System stößt jedoch durch die erforderliche Stabilität des Generators und die aufwendigen Filtermöglichkeiten der beiden Strahlungs­ arten auf Grenzen.In the scanner known from EP 0 390 950 A1, the Radiant energy areas by switching the energy back and forth achieved by a single radiation generator. This system but bumps through the required stability of the generator and the elaborate filter options of the two radiation types on borders.

Des weiteren ist es bekannt, die unterschiedlichen Strahlungs­ energiebereiche durch die Verwendung zweier für die beiden Ener­ giebereiche unterschiedlich empfindlicher Detektorsysteme zu er­ reichen. Bei diesem System wird jedoch die notwendige Material­ auflösung eingeschränkt, weil die beiden Strahlungsenergieberei­ che nur bedingt getrennt werden können.Furthermore, it is known the different radiation energy ranges by using two for the two energy sources areas of differently sensitive detector systems pass. With this system, however, the necessary material resolution limited because the two radiant energy can only be separated to a limited extent.

Der Erfindung liegt die Aufgabe zugrunde, einen Scanner der ein­ gangs genannten Art derart weiter zu bilden, daß die Material­ auflösung unter Umgehung der genannten Einschränkungen verbes­ sert wird.The invention has for its object a scanner gangs mentioned in such a way that the material resolution bypassing the restrictions mentioned verbes sert.

Gelöst wird diese Aufgabe durch die im kennzeichnenden Teil des Patentanspruchs 1 aufgeführten Merkmale. Der Erfindung liegt die Erkenntnis zugrunde, daß bei einem Scanner der eingangs ge­ nannten Art mindestens zwei räumlich getrennte fächerförmige Röntgenstrahlbündel mit verschiedenen optimierten Energieberei­ chen realisiert werden können. Durch diese lokale Auftrennung der beiden Strahlenbündel durch die Anordnung zweier voneinan­ der getrennter stabiler Strahlenquellen und einer zusätzlichen Möglichkeit einer unterschiedlichen Filterung wird ein großer Unterschied in der energetischen Verteilung der beiden Strahlen­ bündel erreicht, so daß eine verbesserte Materialauflösung er­ zielt wird, und weiter vorteilhaft die einzelnen Strahlenquel­ len und Filter als statische Elemente eine hohe Stabilität gewährleisten.This task is solved by the in the characteristic part of the Features listed claim 1. The invention lies based on the knowledge that the ge at the beginning of a scanner named type at least two spatially separated fan-shaped X-ray beam with various optimized energy fields Chen can be realized. Through this local separation of the two beams by arranging two of them the separated stable radiation sources and an additional one Possibility of different filtering becomes a big one Difference in the energetic distribution of the two rays bundle reached so that he improved material resolution is aimed, and further advantageous the individual radiation sources len and filters as static elements a high stability guarantee.

Die Erfindung wird nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeispiels des näheren erläutert.The invention is described below with reference to a drawing illustrated embodiment of the closer explained.

In der einzigen Figur ist ein Transportband 1 dargestellt, auf dem Prüfobjekte 2 durch eine nicht dargestellte Meßkammer beför­ dert werden. Die Prüfobjekte können entweder selbst analysiert werden, oder andere Gegenstände enthalten. Die Meßkammer wird von mindestens zwei fächerförmigen Röntgenstrahlenbündeln 3, 4 durchsetzt. Die Röntgenstrahlenbündel werden jeweils von Strah­ lenquellen 5, 6 ausgesandt, in Kollimatoren 7, 8 werden Fächer­ strahlen ausgeblendet und gefiltert und treffen jeweils auf einer Detektorzeile 9, 10 auf, die aus mindestens einer Reihe von nicht dargestellten Detektorelementen bestehen. In the single figure, a conveyor belt 1 is shown on the test objects 2 are conveyed through a measuring chamber, not shown. The test objects can either be analyzed by yourself or contain other objects. The measuring chamber is penetrated by at least two fan-shaped X-ray beams 3 , 4 . The X-ray beams are each emitted by radiation sources 5 , 6 , in collimators 7 , 8 , beams are faded out and filtered and each strike a detector row 9 , 10 , which consist of at least one row of detector elements, not shown.

Die Detektorelemente bilden der empfangenden Strahlungsinten­ sität entsprechende elektrische Signale, die in einer Verarbei­ tungseinheit 11 ausgewertet und beispielsweise in einem Sichtgerät 12 dargestellt werden.The detector elements form the receiving radiation intensity corresponding electrical signals, which are evaluated in a processing unit 11 and are displayed, for example, in a display device 12 .

Die beiden Strahlungsquellen 5, 6 erzeugen Strahlenbündel unter­ schiedlicher und optimal abgestimmter Energiebereiche, wobei der Energiebereich, beispielsweise eines Strahlengenerators zwi­ schen 50 keV bis 80 keV und der des anderen zwischen 120 keV und 160 keV liegt, so daß die Signale aus beiden Detektorzeilen 9, 10 unterschiedliche, sich ergänzende Informationen beinhal­ ten. Zusätzlich wird dieser Unterschied durch die beispiels­ weise in den Kollimatoren 7, 8 integrierten und speziell abge­ stimmten Filter 13, 14 verstärkt. Durch die lokale Auftrennung der beiden Strahlenbündel 3, 4 durch die Verwendung zweier ge­ trennter Strahlengeneratoren 5, 6 und unterschiedlicher Filte­ rung wird ein optimaler Unterschied in der energetischen Vertei­ lung der beiden Strahlenbündel erreicht. Die einzelnen Strahlen­ generatoren 5, 6 und beispielsweise transportstreckenseitig im jeweiligen Kollimator 7, 8 integrierte Filter 13, 14 gewährlei­ sten als statische Elemente hohe Stabilität.The two radiation sources 5 , 6 generate beams under different and optimally coordinated energy ranges, the energy range, for example a radiation generator between 50 keV to 80 keV and that of the other between 120 keV and 160 keV, so that the signals from both detector lines 9 , 10 different, complementary information contain th. In addition, this difference is reinforced by the example in the collimators 7 , 8 integrated and specially matched filters 13 , 14 . Due to the local separation of the two beams 3 , 4 through the use of two separate beam generators 5 , 6 and different filtering, an optimal difference in the energetic distribution of the two beams is achieved. The individual beam generators 5 , 6 and, for example, on the transport path side in the respective collimator 7 , 8, integrated filters 13 , 14 ensure the highest stability as static elements.

Die Auswerteinheit 11 korreliert die aus den verschiedenen Strahlenbündeln gewonnenen Informationen miteinander und ge­ winnt so die Materialinformation. Durch eine adäquate Synchroni­ sation der Detektorauslese ist eine bildliche Darstellung des durchleuchteten Prüfobjekts 2 über ein Sichtgerät 12 möglich.The evaluation unit 11 correlates the information obtained from the different beams with one another and thus obtains the material information. By means of an adequate synchronization of the detector readout, a visual representation of the X-rayed test object 2 is possible via a viewing device 12 .

Claims (3)

1. Scanner für Prüfobjekte (2) mit einer Transportstrecke (1) für das Prüfobjekt (2), auf deren einer Seite Mittel zur Er­ zeugung von unterschiedlichen Energiebereichen für eine durchdringende aus fächerförmigen Bündeln bestehende Strahlung und auf der anderen Seite Mittel zur Strahlen­ detektion sowie eine nachgeschaltete Verarbeitungseinheit (11) zur Verarbeitung der Detektorsignale angeordnet sind, dadurch gekennzeichnet, daß zur Erzeugung von separaten Röntgenstrahlenbündeln (3, 4) un­ terschiedlicher Strahlungsenergie mindestens 2 Strah­ lungsgeneratoren (5, 6) mit einem jeweiligen Kollimator (7, 8) räumlich getrennt voneinander angeordnet und einer jeweiligen auf der anderen Seite der Transportstrecke (1) befindlichen Detektorzeile (9, 10) zugeordnet sind, und daß die aus den verschiedenen Strahlenbündeln (3, 4) gewonnenen Informationen miteinander in der Verarbeitungseinheit (11) korrelieren.1. scanner for test objects ( 2 ) with a transport route ( 1 ) for the test object ( 2 ), on one side of which means for generating different energy areas for penetrating radiation consisting of fan-shaped bundles and on the other hand means for radiation detection and a downstream processing unit ( 11 ) for processing the detector signals are arranged, characterized in that at least 2 radiation generators ( 5 , 6 ) with a respective collimator ( 7 , 8 ) are spatially separated to produce separate x-ray beams ( 3 , 4 ) of different radiation energy Arranged from each other and assigned to a respective detector line ( 9 , 10 ) located on the other side of the transport path ( 1 ), and that the information obtained from the different beams ( 3 , 4 ) correlate with one another in the processing unit ( 11 ). 2. Scanner nach Anspruch 1, dadurch gekenn­ zeichnet, daß die Strahlungsenergiebereiche des einen Strahlengenerators in einem Bereich von 120 keV bis 160 keV und des anderen Generators in einem Bereich von 50 keV bis 80 keV liegen.2. Scanner according to claim 1, characterized records that the radiant energy ranges of the a radiation generator in a range from 120 keV to 160 keV and the other generator in a range of 50 keV are up to 80 keV. 3. Scanner nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß mindestens einem Strahlenbündel (3, 4) ein Filter (13, 14) zugeordnet ist.3. Scanner according to one of claims 1 or 2, characterized in that at least one beam ( 3 , 4 ) is assigned a filter ( 13 , 14 ).
DE4406958A 1994-03-03 1994-03-03 Scanner for detecting impermissible objects in test objects Expired - Lifetime DE4406958B4 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE4406958A DE4406958B4 (en) 1994-03-03 1994-03-03 Scanner for detecting impermissible objects in test objects
GB9504037A GB2287164B (en) 1994-03-03 1995-02-28 Scanner for examination of articles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4406958A DE4406958B4 (en) 1994-03-03 1994-03-03 Scanner for detecting impermissible objects in test objects

Publications (2)

Publication Number Publication Date
DE4406958A1 true DE4406958A1 (en) 1995-09-07
DE4406958B4 DE4406958B4 (en) 2004-07-22

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DE4406958A Expired - Lifetime DE4406958B4 (en) 1994-03-03 1994-03-03 Scanner for detecting impermissible objects in test objects

Country Status (2)

Country Link
DE (1) DE4406958B4 (en)
GB (1) GB2287164B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19610093A1 (en) * 1996-03-15 1997-09-18 Bsbg Bremer Sonderabfall Berat Process for sorting used batteries and / or accumulators and device for carrying out the process
RU2166749C1 (en) * 1999-09-22 2001-05-10 Кульбеда Владимир Емельянович Roentgenographic device
US6600805B2 (en) 1999-10-21 2003-07-29 Foss Electric A/S Method and apparatus for determination of properties of food or feed
WO2006015471A1 (en) * 2004-08-09 2006-02-16 Linev Vladimir N A security entrance system
WO2007108736A1 (en) * 2006-03-21 2007-09-27 Xcounter Ab Dual-source scanning-based detection of ionizing radiation
DE19802668B4 (en) * 1998-01-24 2013-10-17 Smiths Heimann Gmbh X-ray generator

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5661774A (en) * 1996-06-27 1997-08-26 Analogic Corporation Dual energy power supply
GB2315546A (en) * 1996-07-18 1998-02-04 Imperial College Luggage scanner
DE19721980A1 (en) * 1997-05-26 1998-10-01 Siemens Ag X-ray luggage examination system
DE69827018T2 (en) * 1997-08-06 2006-03-09 L-3 Communications Security and Detection Systems Corp. California, Long Beach BY-SIDE DETECTOR ARRANGEMENT FOR X-RAY IMAGING SYSTEM USING TWO ENERGY SPECTRONS
IT1297933B1 (en) * 1997-12-22 1999-12-20 Gilardoni Spa MULTIENERGY SCANNING DEVICE AND METHOD
ITPD20050375A1 (en) * 2005-12-23 2007-06-24 T A Ap Spa DEVICE FOR THE REGISTRATION OF IMAGES AND / OR MOVIES ASSOCIATED WITH THE IDENTIFICATION OF AN OPERATOR PARTICULARLY FOR CLOSED BAGGAGE STATIONS
US7483511B2 (en) * 2006-06-06 2009-01-27 Ge Homeland Protection, Inc. Inspection system and method
GB0803642D0 (en) 2008-02-28 2008-04-02 Rapiscan Security Products Inc Drive-through scanning systems
US12061309B2 (en) 2008-02-28 2024-08-13 Rapiscan Systems, Inc. Drive-through scanning systems
DE102013002011A1 (en) 2013-02-06 2014-08-07 Jl Goslar Gmbh Self-supporting radiation protection housing
DE102017127372A1 (en) 2017-11-21 2019-05-23 Smiths Heimann Gmbh Anode head for X-ray generator

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JPS58127153A (en) * 1982-01-26 1983-07-28 Toshiba Corp X-ray fluoroscopic inspecting device
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US5065418A (en) * 1989-08-09 1991-11-12 Heimann Gmbh Apparatus for the transillumination of articles with fan-shaped radiation

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US5044002A (en) * 1986-07-14 1991-08-27 Hologic, Inc. Baggage inspection and the like
US5179581A (en) * 1989-09-13 1993-01-12 American Science And Engineering, Inc. Automatic threat detection based on illumination by penetrating radiant energy

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Publication number Priority date Publication date Assignee Title
JPS58127153A (en) * 1982-01-26 1983-07-28 Toshiba Corp X-ray fluoroscopic inspecting device
DE3633738A1 (en) * 1985-10-08 1987-04-09 Thomson Cgr RADIOLOGICAL EXAMINATION DEVICE
EP0390950A1 (en) * 1989-04-06 1990-10-10 Heimann Systems GmbH &amp; Co. KG Arrangement for the inspection of materials
US5065418A (en) * 1989-08-09 1991-11-12 Heimann Gmbh Apparatus for the transillumination of articles with fan-shaped radiation

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Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 241, 26 Oct. 1983 & JP 58 127153 A (TOYOTA SHIBAURA) 28.07.1983 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19610093A1 (en) * 1996-03-15 1997-09-18 Bsbg Bremer Sonderabfall Berat Process for sorting used batteries and / or accumulators and device for carrying out the process
DE19802668B4 (en) * 1998-01-24 2013-10-17 Smiths Heimann Gmbh X-ray generator
RU2166749C1 (en) * 1999-09-22 2001-05-10 Кульбеда Владимир Емельянович Roentgenographic device
US6600805B2 (en) 1999-10-21 2003-07-29 Foss Electric A/S Method and apparatus for determination of properties of food or feed
WO2006015471A1 (en) * 2004-08-09 2006-02-16 Linev Vladimir N A security entrance system
CN101036070B (en) * 2004-08-09 2010-05-05 Adani科学产品私营独立企业 A security entrance system
WO2007108736A1 (en) * 2006-03-21 2007-09-27 Xcounter Ab Dual-source scanning-based detection of ionizing radiation
US7333590B2 (en) 2006-03-21 2008-02-19 Xcounter Ab Dual-source scanning-based detection of ionizing radiation

Also Published As

Publication number Publication date
GB2287164A (en) 1995-09-06
DE4406958B4 (en) 2004-07-22
GB9504037D0 (en) 1995-04-19
GB2287164B (en) 1998-07-22

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Owner name: SMITHS HEIMANN GMBH, 65205 WIESBADEN, DE

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