EP2469497B1 - Method for recording vehicles - Google Patents

Method for recording vehicles Download PDF

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Publication number
EP2469497B1
EP2469497B1 EP10450197A EP10450197A EP2469497B1 EP 2469497 B1 EP2469497 B1 EP 2469497B1 EP 10450197 A EP10450197 A EP 10450197A EP 10450197 A EP10450197 A EP 10450197A EP 2469497 B1 EP2469497 B1 EP 2469497B1
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EP
European Patent Office
Prior art keywords
entry
exit
pic
vehicle
memory
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.)
Not-in-force
Application number
EP10450197A
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German (de)
French (fr)
Other versions
EP2469497A1 (en
Inventor
Oliver Nagy
Alexander Abl
Jasja Tijink
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.)
Kapsch TrafficCom AG
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Kapsch TrafficCom AG
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
Priority to PT104501978T priority Critical patent/PT2469497E/en
Application filed by Kapsch TrafficCom AG filed Critical Kapsch TrafficCom AG
Priority to SI201030145T priority patent/SI2469497T1/en
Priority to EP10450197A priority patent/EP2469497B1/en
Priority to PL10450197T priority patent/PL2469497T3/en
Priority to ES10450197T priority patent/ES2401674T3/en
Priority to DK10450197.8T priority patent/DK2469497T3/en
Priority to CA2756910A priority patent/CA2756910A1/en
Priority to AU2011250695A priority patent/AU2011250695B2/en
Priority to NZ596440A priority patent/NZ596440A/en
Priority to US13/330,379 priority patent/US20120162432A1/en
Priority to CN2011104270504A priority patent/CN102568219A/en
Priority to CL2011003242A priority patent/CL2011003242A1/en
Priority to RU2011153165/11A priority patent/RU2011153165A/en
Publication of EP2469497A1 publication Critical patent/EP2469497A1/en
Application granted granted Critical
Publication of EP2469497B1 publication Critical patent/EP2469497B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/052—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed
    • G08G1/054—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed photographing overspeeding vehicles
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles
    • G08G1/0175—Detecting movement of traffic to be counted or controlled identifying vehicles by photographing vehicles, e.g. when violating traffic rules

Definitions

  • the present invention relates to a method for image recording of vehicles passing through a distance between an entrance and an exit at too high a speed.
  • Certain traffic surveillance tasks require a picture of a vehicle to preserve evidence for the punishment of traffic offenses. Examples of this are the so-called “Section Control", in which the entry and exit times of a vehicle are measured at the section of road traveled by the vehicle and used for speed determination.
  • the traffic monitoring systems used for this purpose must meet strict data protection requirements in order to rule out as far as possible the impermissible creation of movement profiles of road users. For example, the statutory regulations in Austria and Germany for the implementation of Section Control require that a permanent identification of a vehicle and its transit data may only be made in the event of a speeding violation.
  • the invention has for its object to provide a method for imaging vehicles passing through a route at too high a speed, which offers the highest possible data protection for the sensitive transit data.
  • the invention enables a separate storage of the images of the vehicles in a secure memory and only for the time that is strictly necessary in order to be available in case of a speeding offense.
  • the images are only under the random Access identifier can be found, which in turn can be determined only by an anonymous comparison of encrypted or hashed entry and exit data.
  • the first memory may be sealed as a "black box” and privacy-certified, and only in the event of an offense the key (the access identifier) is provided for the "sealed" image recordings.
  • an "encrypted value” of the entry or exit identifier is understood as an encryption of this identifier by means of a cryptographic key, so that its knowledge of the decryption is required.
  • a “hashed value” “hash value”) of the entry or exit identifier is understood in the present description to mean the application of a virtually irreversible n: 1 mapping function to this identifier, i. a function that is only (extremely) ambiguous reversible, so that from the knowledge of the hash value practically no longer on the output value (the identifier) can be concluded. Examples of such hashing functions are the checksum function, the modulo function, etc.
  • the entry and exit times of quasi "anonymous" encrypted or hashed values are compared; and only if they are within a predetermined period of time is the associated access identifier used to retrieve an image capture.
  • the said period of time is chosen so that it corresponds to the minimum allowable travel time for the route, i. if a vehicle passes through it at the maximum permissible speed. This significantly increases data security.
  • an exit image of the vehicle is preferably recorded at the exit, a class of the vehicle is determined therefrom and the time period is predefined as a function of the determined class.
  • This can be different Speed limits for different classes (types) of vehicles are controlled, eg 130 km / h for cars, 100 km / h for trucks, 80 km / h for vehicles with trailers, etc.
  • the entry images in the first memory are each provided with their recording time and each entry image, which is not retrieved within a predetermined period, is deleted in the first memory.
  • the storage time of the image data in the first memory is thus limited to the minimum necessary period of time, which further reduces the risk of manipulation and unauthorized data access.
  • the access identifier from that record is used to clear the entry image stored thereto in the first memory ,
  • the first memory is physically separated from the second memory to facilitate the establishment of the first memory as a "black box”.
  • a further preferred embodiment of the invention is characterized in that an exit image of the vehicle is also recorded at the exit and each successfully retrieved entry image is archived together with the exit image and the identification of the vehicle for purposes of proof.
  • any suitable for an identification feature of the vehicle may be used, for example, a remote-readable VIN, a radio ID of an entrained RFID transponder chip, etc.
  • the identifier is simply the vehicle registration number on the license plate of the vehicle and is as a picture or especially preferably alphanumerically by optical character recognition (optical character recognition, OCR) in entry and exit images of the vehicle.
  • OCR optical character recognition
  • the same entry and exit images can be used for this, which are also archived for evidence, so that at the entrance and exit only a single image acquisition is required.
  • his speed can be determined from the entry and exit time of a vehicle and the length of the route between entry and exit.
  • the proper access to the image recordings can additionally be checked by a further offense check within the first memory (the "black box"), in addition to the access identifier, the entry and exit times in a form electronically signed by the entry and exit stations be handed over to the black box.
  • the respective images and entry and exit times are preferably provided at the entrance and exit with an electronic signature of an entry or exit station, and in particular with the access to the first memory, the entry and exit times to the first memory mitelle, and from first memory is a retrieval of the entrance image only allowed if the entrained entry and exit times are within the specified time period, preferably from the first memory and the signatures of the entry and exit times are checked.
  • the entry and exit images may be stored with a separate key from a third party, e.g. a competent traffic control authority, encrypted in the corresponding memories for control queries by this third party, in particular the authority.
  • a third party e.g. a competent traffic control authority
  • Fig. 1 shows a vehicle 1, which passes a distance 2 of length L from an entrance 3 to an exit 4.
  • the vehicle 1 has a unique identifier 5, for example in the form of its license plate number (LPN).
  • LPN license plate number
  • the identifier 5 could alternatively also be formed by other features of the vehicle 1, eg a machine-readable chassis number, a remote-readable radio identifier, eg RFID identifier, etc.
  • the entry station 6 has at least one camera or video camera, with which it can record an entry image PIC 1 of the vehicle 1 when passing the driveway 3 and can also detect the entry time TS 1 .
  • the entry station 6 also detects the identifier 5 or LPN of the vehicle 1 as "entry detection" LPN 1 .
  • the entry detection LPN 1 can for example be done directly by optical character recognition (OCR) of the vehicle registration number of the vehicle 1 in the entrance image PIC 1 , or by remote readout of a radio ID from an RFID transponder chip or radio on-board device (OBU) of the vehicle 1, or the like.
  • OCR optical character recognition
  • OBU radio on-board device
  • the entrance image PIC 1 , the entry ID LPN 1 and the entry time TS 1 are stored by the entry station 6 in databases 8, 9, as later described in detail with reference to Fig. 2 is explained.
  • the exit station 7 picks up an exit image PIC 2 of the vehicle 1 when passing the exit 4 and detects the exit time TS 2 as well as the identification 5 or LPN of the vehicle 1 as "exit recognition" LPN 2 .
  • the exit picture PIC 2 , the exit identifier LPN 2 and the exit time TS 2 are temporarily stored in an internal memory 10 of the exit station 7.
  • the entry and exit stations 6, 7 can communicate directly with one another via a data connection 11, and the method described below can be carried out, for example, directly in the exit station 7.
  • the entry and exit stations 6, 7 can communicate with an evaluation computer 12 in which their data are evaluated in the manner described below.
  • Fig. 2 shows that with the components of Fig. 1 performed method of the invention in detail.
  • a separate, unique and random access identifier (“random ID") RID is generated in the entry station 6 for each vehicle 1 that passes the entrance 3.
  • the access identifier RID may be randomly generated, or taken from a list of any prestored access identifiers known only at the entry station 6.
  • the entrance image PIC 1 is also recorded in the manner described and the entry time TS 1 and the entrance recognition LPN 1 detected, for example by OCR evaluation of the entrance image PIC 1 with respect to the vehicle registration number of the vehicle 1.
  • the entry identifier LPN 1 has formed a hash h.
  • the hash value h is generated in a virtually irreversible manner from the entry identifier LPN 1 , as discussed at the beginning.
  • step 14 the entry image PIC 1 is stored under the random access identifier RID in the first memory 8 of the entry station 6.
  • the memory 8 is a separate, preferably physically also in the form of a "black box” isolated and data protection technology sealed and certified memory, from which the once stored therein Ein marsscou PIC. 1 only accessible on the basis of their respective access identifier RID.
  • step 15 the hash value h (LPN 1 ) is stored together with the entry time TS 1 and the access identifier RID as a data record 16 in the second memory 9 of the entry station 6.
  • a vehicle 1 passes the exit 4, it being still not clear at first whether it is the same vehicle 1 that has passed the entrance 3 in steps 13-15.
  • the exit station 7 detects the exit identifier LPN 2 and the exit time TS 2 as well as the exit identifier LPN 2 , which can be obtained, for example, again from an exit picture PIC 2 by OCR evaluation of a vehicle license plate recognizable therein.
  • the exit identifier LPN 2 could also be determined from a radio identifier or other characteristic features of the vehicle 1, in which case the inclusion of an exit image PIC 2 is not absolutely necessary, but favorable for later proof purposes. From the exit identifier LPN 2 , the exit station 7 again calculates a hash value h (LPN 2 ) in the manner discussed above.
  • an encrypted value of the entry identifier LPN 1 was used in the entry station instead of a hash value, an encrypted value of the same is also formed in the exit station instead of a hash value of the exit identifier LPN 2 , u.zw. using the same key (or the other part of a corresponding public / private key pair for the entry and exit stations 6, 7).
  • the hash value h of the exit identifier LPN 2 is used to determine from the second memory 9 of the entry station 6 that data record 16 which contains the same hash value h as obtained from the entry identifier LPN 1 .
  • This can be one owned by a single vehicle 1 entry time TS 1 and its stored access identifier RID be determined without the vehicle identification 5 or LPN directly between the entry and exit stations 6, 7 must be replaced.
  • entry and exit identifications LPN 1 , LPN 2 are determined by means of OCR from the entry and exit pictures PIC 1 , PIC 2 , due to the error rate of conventional OCR methods, the case may occur that instead of a single correct OCR reading result several different " Candidate IDs LPN 1 and LPN 2, respectively, as possible OCR read results.
  • a plurality of encrypted or hashed candidate hash values h can also be formed on each side, ie in the entry station and in the exit station; Accordingly, in the retrieval of the record 16 from the second memory 9, the various candidate hash values h of both pages are compared with each other to find out the "matching" record 16 at which these hash values h coincide.
  • step 19 it is then compared whether the exit time TS 2 of this vehicle 1 is within a predetermined time period t max of the entry time TS 1 of the same vehicle 1. If this is the case (branch "y" of the comparison 19), then it is obviously a speeding error: The vehicle 1 then has the distance L in a shorter than the allowable time t max and thus with a higher than the maximum speed passed through. In this case, in step 20, the black box memory 8 is accessed using the access identifier RID specified in the data record 16, to derive therefrom the information stored under the access identifier RID Access image PIC 1 .
  • the entrance image PIC 1 can be used directly for punishment ("enforcement") of the traffic offense or in an optional step 21 together with the entry and exit times TS 1 , TS 2 and the optional exit image PIC 2 in a memory, eg also in the memory 10.
  • the exit station 7 are archived.
  • the time span t max can also be predetermined depending on the type (class) of the vehicle 1.
  • the exit image PIC 2 can be automatically analyzed to classify the vehicle 1 depicted therein;
  • different time intervals t max can then be determined and predefined from a stored table in order to define specific speed limits for certain vehicle types, taking into account the length L of the route 2, eg 130 km / h for cars, 100 km / h for trucks. 80 km / h for vehicles with trailers, etc.
  • a computer may retrieve the data generated in step 21 for further sanction, and upon retrieval, preferably, all data in the exit station 7 and memory 10 is deleted.
  • the black box memory 8 (optionally also the second memory 9) can be designed so that it continuously deletes all those entry pictures PIC 1 (or optionally also those data TS 1 , h (LPN 1 )) after a predetermined period of time from the time TS 1 of their detection, preferably after the said time period t max , not be retrieved.
  • These "unrequested" entry pictures PIC 1 obviously are pictures of vehicles 1 that have not committed a speeding offense so that they are deleted after expiration of the time period t max for privacy reasons (step 22).
  • the image recording or access times TS 1 can be stored in the first storage 1 directly to the entrance 8 pictures PIC.
  • deletion of the "no-entry" entry pictures PIC 1 in the first memory 8 are also triggered by the entry station 6 using the entry times TS 1 from the second memory 9 if the current time is greater than the entry time TS 1 plus the time period t max .
  • step 23 is traversed at the "no" branch of the comparison 19.
  • the clearing of the entry-free entry pictures PIC 1 is initiated in step 23 by the exit station 7, which sends a request to the black box memory 8 (and optionally the second memory 9) or the entry station 6 for deleting the entry picture (and optionally the data of the memory 9) sends.
  • a compliant vehicle thus leaves no identifiable traces in the system, which ensures the highest data security.
  • the steps 17 - 21 or 23 of the method can - except in the detection of the exit time TS 2 and the exit image PIC 2 - instead of in the exit station 7 in the (optional) evaluation computer 12 are performed, if desired.
  • the entry and exit pictures PIC 1 , PIC 2 can optionally be encrypted with a key of an authority and provided in the corresponding memories 8, 9, 10 for control inquiries by the authority.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)
  • Storage Device Security (AREA)
  • Time Recorders, Dirve Recorders, Access Control (AREA)

Description

Die vorliegende Erfindung betrifft ein Verfahren zur Bildaufnahme von Fahrzeugen, die eine Strecke zwischen einer Einfahrt und einer Ausfahrt mit zu hoher Geschwindigkeit durchfahren.The present invention relates to a method for image recording of vehicles passing through a distance between an entrance and an exit at too high a speed.

Bestimmte Verkehrsüberwachungsaufgaben erfordern eine Bildaufnahme eines Fahrzeugs zur Beweissicherung für die Ahndung von Verkehrsdelikten. Beispiele hiefür sind die sog. "Section Control", bei welcher die Ein- und Ausfahrtszeiten eines Fahrzeugs an dem vom Fahrzeug durchfahrenen Streckenabschnitt gemessen und zur Geschwindigkeitsbestimmung herangezogen werden. Die dazu eingesetzten Verkehrsüberwachungssysteme müssen strengen Datenschutzauflagen genügen, um eine unzulässige Erstellung von Bewegungsprofilen der Verkehrsteilnehmer möglichst auszuschließen. Beispielsweise erfordern die gesetzlichen Regelungen in Österreich und Deutschland für die Durchführung der Section Control, dass eine dauerhafte Identifizierung eines Fahrzeugs und seiner Durchfahrtsdaten nur im Falle einer Geschwindigkeitsübertretung erfolgen darf.Certain traffic surveillance tasks require a picture of a vehicle to preserve evidence for the punishment of traffic offenses. Examples of this are the so-called "Section Control", in which the entry and exit times of a vehicle are measured at the section of road traveled by the vehicle and used for speed determination. The traffic monitoring systems used for this purpose must meet strict data protection requirements in order to rule out as far as possible the impermissible creation of movement profiles of road users. For example, the statutory regulations in Austria and Germany for the implementation of Section Control require that a permanent identification of a vehicle and its transit data may only be made in the event of a speeding violation.

Bislang bekannte Systeme versuchen diese Datenschutzanforderungen zu erfüllen, indem nach einer Identifizierung des Fahrzeugs an der Ein- und Ausfahrt und einer darauf basierenden Geschwindigkeitsmessung dann, wenn kein Geschwindigkeitsdelikt vorliegt, alle aufgezeichneten Daten innerhalb einer garantierten Zeit, z.B. 8 Minuten, spurlos gelöscht werden (siehe F. Albrecht, "Section Control in Deutschland", Straßenverkehrsrecht, Zeitschrift für die Praxis des Verkehrsjuristen, 2009). Diese Vorgehensweise ist weiterhin mit Unsicherheiten verbunden, weil alle Durchfahrtsdaten zu einem bestimmten Zeitpunkt in den Einfahrts- und Ausfahrtstationen in unverschlüsselter Form vorliegen, unabhängig davon, ob es sich um einen Delikatfall handelt oder nicht.Previously known systems attempt to meet these data protection requirements by, after identifying the vehicle at the entrance and exit and based thereon speed measurement, if there is no speed penalty, all recorded data within a guaranteed time, e.g. 8 minutes, without leaving a trace (see F. Albrecht, "Section Control in Germany", Road Traffic Law, Journal for the Practice of the Traffic Lawyer, 2009). This procedure is still associated with uncertainties because all transit data at a certain time in the entry and exit stations are available in unencrypted form, regardless of whether it is a Delikatfall or not.

Weitere Lösungen sind in den Schriften DE 10 2007 059 346 A1 , DE 10 2005 03 65 562 A1 , EP 0 978 811 A2 , US 6 081 206 und AT 8939 U1 beschrieben. All diese bekannten Systeme sind entweder aufwendig oder können die Gefahr eines Datenmissbrauchs und Datenschutzbedenken nicht mit Sicherheit ausräumen.Other solutions are in the scriptures DE 10 2007 059 346 A1 . DE 10 2005 03 65 562 A1 . EP 0 978 811 A2 . US 6,081,206 and AT 8939 U1 described. All these known systems are either expensive or can not eliminate the risk of data misuse and privacy concerns with certainty.

Die Erfindung setzt sich zum Ziel, ein Verfahren zur Bildaufnahme von Fahrzeugen, die eine Strecke mit zu hoher Geschwindigkeit durchfahren, zu schaffen, welches höchstmöglichen Datenschutz für die sensiblen Durchfahrtsdaten bietet.The invention has for its object to provide a method for imaging vehicles passing through a route at too high a speed, which offers the highest possible data protection for the sensitive transit data.

Dieses Ziel wird mit einem Verfahren der einleitend genannten Art erreicht, das die folgenden Schritte umfasst:

  • Erzeugen einer zufälligen Zugriffskennung für ein Fahrzeug an der Einfahrt,
  • Aufnehmen eines Bildes des Fahrzeugs an der Einfahrt und Speichern des Einfahrtsbildes und der Zugriffskennung in einem ersten Speicher, der nur über diese Zugriffskennung abrufbar ist,
  • Erfassen der Einfahrtszeit und zumindest einer Kennung des Fahrzeugs an der Einfahrt, Bilden eines verschlüsselten oder gehashten Werts dieser Einfahrtskennung und Speichern der Einfahrtszeit, des genannten Werts und der Zugriffskennung als Datensatz in einem zweiten Speicher,
  • Erfassen der Ausfahrtszeit und zumindest einer Kennung eines Fahrzeugs an der Ausfahrt, Bilden eines verschlüsselten oder gehashten Werts dieser Ausfahrtskennung und Ermitteln des Datensatzes mit demselben verschlüsselten bzw. gehashten Wert aus dem zweiten Speicher und,
  • wenn die Ausfahrtszeit innerhalb einer vorgegebenen Zeitspanne von der Einfahrtszeit dieses Datensatzes liegt, Verwenden der Zugriffskennung aus diesem Datensatz zum Zugriff auf den ersten Speicher, um das dazu gespeicherte Einfahrtsbild des Fahrzeugs abzurufen.
This object is achieved by a method of the type mentioned in the introduction, which comprises the following steps:
  • Generating a random access identifier for a vehicle at the entrance,
  • Recording an image of the vehicle at the entrance and storing the entry image and the access identifier in a first memory, which is only accessible via this access identifier,
  • Detecting the entry time and at least one identifier of the vehicle at the entrance, forming an encrypted or hashed value of this entry identification and storing the entry time, said value and the access identifier as a data record in a second memory,
  • Detecting the exit time and at least one identifier of a vehicle at the exit, forming an encrypted or hashed value of that exit identifier, and determining the record with the same encrypted or hashed value from the second memory and,
  • if the exit time is within a predetermined time from the entry time of that record, using the access identifier from that record to access the first memory to retrieve the entry image of the vehicle stored therefor.

Die Erfindung ermöglicht eine abgesonderte Aufbewahrung der Bildaufnahmen der Fahrzeuge in einem sicheren Speicher und genau nur für jene Zeit, die unbedingt notwendig ist, um im Falle eines Geschwindigkeitsdelikts zur Verfügung zu stehen. Während dieser Zeit sind die Bildaufnahmen nur unter der zufälligen Zugriffskennung auffindbar, welche wiederum nur aufgrund eines anonymisierten Vergleichs von verschlüsselten bzw. gehashten Ein- und Ausfahrtsdaten ermittelt werden kann. Der erste Speicher kann z.B. als "Blackbox" versiegelt und datenschutzzertifiziert werden, und nur im Deliktfall wird der Schlüssel (die Zugriffskennung) für die "versiegelten" Bildaufnahmen bereitgestellt.The invention enables a separate storage of the images of the vehicles in a secure memory and only for the time that is strictly necessary in order to be available in case of a speeding offense. During this time, the images are only under the random Access identifier can be found, which in turn can be determined only by an anonymous comparison of encrypted or hashed entry and exit data. For example, the first memory may be sealed as a "black box" and privacy-certified, and only in the event of an offense the key (the access identifier) is provided for the "sealed" image recordings.

Unter einem "verschlüsselten Wert" der Einfahrts- bzw. Ausfahrtskennung wird in der vorliegenden Beschreibung eine Verschlüsselung dieser Kennung mit Hilfe eines kryptographischen Schlüssels verstanden, so daß dessen Kenntnis zu Entschlüsselung erforderlich ist. Unter einem "gehashten Wert" "Hashwert") der Einfahrts- bzw. Ausfahrtskennung wird in der vorliegenden Beschreibung die Anwendung einer praktisch unumkehrbaren n:1-Abbildungsfunktion auf diese Kennung verstanden, d.h. einer Funktion, die nur (extrem) vieldeutig umkehrbar ist, so dass aus der Kenntnis des Hashwerts praktisch nicht mehr auf den Ausgangswert (die Kennung) geschlossen werden kann. Beispiele solcher Hashfunktionen sind die Quersummenfunktion, die Modulofunktion usw.In the present description, an "encrypted value" of the entry or exit identifier is understood as an encryption of this identifier by means of a cryptographic key, so that its knowledge of the decryption is required. A "hashed value" "hash value") of the entry or exit identifier is understood in the present description to mean the application of a virtually irreversible n: 1 mapping function to this identifier, i. a function that is only (extremely) ambiguous reversible, so that from the knowledge of the hash value practically no longer on the output value (the identifier) can be concluded. Examples of such hashing functions are the checksum function, the modulo function, etc.

Bei dem genannten Vergleich werden somit die Ein- und Ausfahrtszeiten quasi "anonymer" verschlüsselter bzw. gehashter Werte verglichen; und nur wenn diese innerhalb einer vorgegebenen Zeitspanne liegen, wird die zugehörige Zugriffskennung verwendet, um eine Bildaufnahme abzurufen. Damit gewährleistet die Erfindung, dass eine bildhafte Identifizierung eines Fahrzeugs stets nur im Deliktfall möglich ist: Die genannte Zeitspanne wird so gewählt, dass sie der minimal zulässigen Fahrzeit für die Strecke entspricht, d.h. wenn ein Fahrzeug diese mit der höchstzulässigen Geschwindigkeit durchfährt. Damit wird die Datensicherheit entscheidend erhöht.In the aforementioned comparison, the entry and exit times of quasi "anonymous" encrypted or hashed values are compared; and only if they are within a predetermined period of time is the associated access identifier used to retrieve an image capture. In order for the invention ensures that a pictorial identification of a vehicle is always possible only in case of crime: The said period of time is chosen so that it corresponds to the minimum allowable travel time for the route, i. if a vehicle passes through it at the maximum permissible speed. This significantly increases data security.

In Weiterbildung der Erfindung wird bevorzugt an der Ausfahrt auch ein Ausfahrtsbild des Fahrzeugs aufgenommen, daraus eine Klasse des Fahrzeugs ermittelt und die Zeitspanne abhängig von der ermittelten Klasse vorgegeben. Dadurch können unterschiedliche Geschwindigkeitslimits für unterschiedliche Klassen (Arten) von Fahrzeugen kontrolliert werden, z.B. 130 km/h für PKWs, 100 km/h für LKWs, 80 km/h für Fahrzeuge mit Anhängern, usw.In a further development of the invention, an exit image of the vehicle is preferably recorded at the exit, a class of the vehicle is determined therefrom and the time period is predefined as a function of the determined class. This can be different Speed limits for different classes (types) of vehicles are controlled, eg 130 km / h for cars, 100 km / h for trucks, 80 km / h for vehicles with trailers, etc.

In einer weiteren bevorzugten Ausführungsform der Erfindung werden die Einfahrtsbilder im ersten Speicher jeweils mit ihrer Aufnahmezeit versehen und jedes Einfahrtsbild, das nicht innerhalb einer vorgegebenen Zeitspanne abgerufen wird, wird im ersten Speicher gelöscht. Die Aufbewahrungszeit der Bilddaten im ersten Speicher wird damit auf den minimal notwendigen Zeitraum begrenzt, was die Gefahr von Manipulationen und unberechtigten Datenzugriffen weiter reduziert.In a further preferred embodiment of the invention, the entry images in the first memory are each provided with their recording time and each entry image, which is not retrieved within a predetermined period, is deleted in the first memory. The storage time of the image data in the first memory is thus limited to the minimum necessary period of time, which further reduces the risk of manipulation and unauthorized data access.

Zu demselben Zweck kann in einer alternativen bevorzugten Ausführungsform der Erfindung vorgesehen werden, dass, wenn die Ausfahrtszeit nicht innerhalb der genannten Zeitspanne von der Einfahrtszeit des genannten Datensatzes liegt, die Zugriffskennung aus diesem Datensatz verwendet wird, um das dazu im ersten Speicher gespeicherte Einfahrtsbild zu löschen.For the same purpose, in an alternative preferred embodiment of the invention, it may be provided that if the exit time is not within the aforementioned time from the entry time of said record, the access identifier from that record is used to clear the entry image stored thereto in the first memory ,

Bevorzugt wird der erste Speicher von dem zweiten Speicher physisch getrennt, um die Einrichtung des ersten Speichers als "Blackbox" zu erleichtern.Preferably, the first memory is physically separated from the second memory to facilitate the establishment of the first memory as a "black box".

Eine weitere bevorzugte Ausführungsform der Erfindung zeichnet sich dadurch aus, dass an der Ausfahrt auch ein Ausfahrtsbild des Fahrzeugs aufgenommen und jedes erfolgreich abgerufene Einfahrtsbild zusammen mit dem Ausfahrtsbild und der Kennung des Fahrzeugs zu Beweiszwecken archiviert wird. Dadurch kann eine doppelte Beweissicherung für Geschwindigkeitsdelikte erreicht werden.A further preferred embodiment of the invention is characterized in that an exit image of the vehicle is also recorded at the exit and each successfully retrieved entry image is archived together with the exit image and the identification of the vehicle for purposes of proof. As a result, a double proof of evidence for speeding offenses can be achieved.

Als Kennung des Fahrzeugs kann jedes für eine Identifizierung geeignete Merkmal des Fahrzeugs verwendet werden, z.B. eine fernauslesbare Fahrgestellnummer, eine Funk-Kennung eines mitgeführten RFID-Transponderchips usw. Bevorzugt ist die Kennung einfach das Fahrzeugkennzeichen auf der Kennzeichentafel des Fahrzeugs und wird als Bild oder besonders bevorzugt alphanumerisch durch optische Zeichenerkennung (optical character recognition, OCR) in Einfahrts- und Ausfahrtsbildern des Fahrzeugs erfaßt. Zweckmäßigerweise können dazu dieselben Einfahrts- und Ausfahrtsbilder verwendet werden, welche auch zu Beweiszwecken archiviert werden, sodass an der Ein- und Ausfahrt jeweils nur eine einzige Bildaufnahme erforderlich ist.As identifier of the vehicle, any suitable for an identification feature of the vehicle may be used, for example, a remote-readable VIN, a radio ID of an entrained RFID transponder chip, etc. Preferably, the identifier is simply the vehicle registration number on the license plate of the vehicle and is as a picture or especially preferably alphanumerically by optical character recognition (optical character recognition, OCR) in entry and exit images of the vehicle. Conveniently, the same entry and exit images can be used for this, which are also archived for evidence, so that at the entrance and exit only a single image acquisition is required.

Bevorzugt kann aus der Einfahrts- und Ausfahrtszeit eines Fahrzeugs und der Streckenlänge zwischen Ein- und Ausfahrt auch gleich seine Geschwindigkeit ermittelt werden.Preferably, his speed can be determined from the entry and exit time of a vehicle and the length of the route between entry and exit.

Optional kann der ordnungsgemäße Zugriff auf die Bildaufnahmen zusätzlich durch eine nochmalige Delikt-Prüfung innerhalb des ersten Speichers (der "Blackbox") geprüft werden, indem zusätzlich mit der Zugriffskennung auch die Ein- und Ausfahrtszeiten in einer von den Ein- und Ausfahrtsstationen elektronisch signierten Form an die Blackbox übergeben werden. Demgemäß werden bevorzugt an der Einfahrt und der Ausfahrt die jeweiligen Bilder und Ein- und Ausfahrtszeiten mit einer elektronischen Signatur einer Ein- bzw. Ausfahrtsstation versehen, und insbesondere beim Zugriff auf den ersten Speicher die Ein-und Ausfahrtszeiten an den ersten Speicher mitübergeben, und vom ersten Speicher wird ein Abruf des Einfahrtsbilds nur dann gestattet, wenn die mitübergebenen Ein- und Ausfahrtszeiten innerhalb der genannten vorgegebenen Zeitspanne liegen, wobei bevorzugt vom ersten Speicher auch die Signaturen der Ein- und Ausfahrtszeiten überprüft werden.Optionally, the proper access to the image recordings can additionally be checked by a further offense check within the first memory (the "black box"), in addition to the access identifier, the entry and exit times in a form electronically signed by the entry and exit stations be handed over to the black box. Accordingly, the respective images and entry and exit times are preferably provided at the entrance and exit with an electronic signature of an entry or exit station, and in particular with the access to the first memory, the entry and exit times to the first memory mitgeben, and from first memory is a retrieval of the entrance image only allowed if the entrained entry and exit times are within the specified time period, preferably from the first memory and the signatures of the entry and exit times are checked.

Entsprechend einer weiteren Option können die Ein- und Ausfahrtsbilder mit einem gesonderten Schlüssel eines Dritten, z.B. einer zuständigen Verkehrsüberwachungsbehörde, verschlüsselt in den entsprechenden Speichern für Kontrollabfragen durch diesen Dritten, insbesondere die Behörde, bereitgestellt werden.According to another option, the entry and exit images may be stored with a separate key from a third party, e.g. a competent traffic control authority, encrypted in the corresponding memories for control queries by this third party, in particular the authority.

Die Erfindung wird nachstehend anhand von in den beigeschlossenen Zeichnungen dargestellten Ausführungsbeispielen näher erläutert. In den Zeichnungen zeigt

  • Fig. 1 ein nach dem Verfahren der Erfindung arbeitendes Section-Control-System schematisch im Überblick; und
  • Fig. 2 das Verfahren der Erfindung in Form eines Sequenzdiagramms.
The invention will be explained in more detail with reference to embodiments illustrated in the accompanying drawings. In the drawings shows
  • Fig. 1 a working according to the method of the invention section control system schematically at a glance; and
  • Fig. 2 the method of the invention in the form of a sequence diagram.

Fig. 1 zeigt ein Fahrzeug 1, das eine Strecke 2 der Länge L von einer Einfahrt 3 bis zu einer Ausfahrt 4 durchfährt. Das Fahrzeug 1 besitzt eine eindeutige Kennung 5, beispielsweise in Form seines Fahrzeugkennzeichens ("License Plate Number", LPN). Die Kennung 5 könnte alternativ auch durch andere Merkmale des Fahrzeugs 1 gebildet sein, z.B. eine maschinenlesbare Fahrgestellnummer, eine fernauslesbare Funkkennung, z.B. RFID-Kennung, usw. Fig. 1 shows a vehicle 1, which passes a distance 2 of length L from an entrance 3 to an exit 4. The vehicle 1 has a unique identifier 5, for example in the form of its license plate number (LPN). The identifier 5 could alternatively also be formed by other features of the vehicle 1, eg a machine-readable chassis number, a remote-readable radio identifier, eg RFID identifier, etc.

An den Ein- und Ausfahrten 3, 4 sind jeweils - nur schematisch dargestellte - Einfahrts- und Ausfahrtsstationen 6, 7 angeordnet. Die Einfahrtsstation 6 verfügt über zumindest eine Foto- oder Videokamera, mit welcher sie ein Einfahrtsbild PIC1 des Fahrzeugs 1 beim Passieren der Einfahrt 3 aufnehmen und auch die Einfahrtszeit TS1 erfassen kann. Darüber hinaus erfasst die Einfahrtsstation 6 auch die Kennung 5 bzw. LPN des Fahrzeugs 1 als "Einfahrtskennung" LPN1.At the entrances and exits 3, 4 are each - only schematically illustrated - entry and exit stations 6, 7 are arranged. The entry station 6 has at least one camera or video camera, with which it can record an entry image PIC 1 of the vehicle 1 when passing the driveway 3 and can also detect the entry time TS 1 . In addition, the entry station 6 also detects the identifier 5 or LPN of the vehicle 1 as "entry detection" LPN 1 .

Die Einfahrtskennung LPN1 kann beispielsweise direkt durch optische Zeichenerkennung (OCR) des Fahrzeugkennzeichens des Fahrzeugs 1 im Einfahrtsbild PIC1 erfolgen, oder durch Fernauslesen einer Funkkennung aus einem RFID-Transponderchip oder Funkvermautungsgerät (Onboard Unit, OBU) des Fahrzeugs 1, od.dgl.The entry detection LPN 1 can for example be done directly by optical character recognition (OCR) of the vehicle registration number of the vehicle 1 in the entrance image PIC 1 , or by remote readout of a radio ID from an RFID transponder chip or radio on-board device (OBU) of the vehicle 1, or the like.

Das Einfahrtsbild PIC1, die Einfahrtskennung LPN1 und die Einfahrtszeit TS1 werden von der Einfahrtsstation 6 in Datenbanken 8, 9 gespeichert, wie später noch ausführlich anhand von Fig. 2 erläutert wird.The entrance image PIC 1 , the entry ID LPN 1 and the entry time TS 1 are stored by the entry station 6 in databases 8, 9, as later described in detail with reference to Fig. 2 is explained.

Die Ausfahrtsstation 7 nimmt ihrerseits ein Ausfahrtsbild PIC2 des Fahrzeugs 1 beim Passieren der Ausfahrt 4 auf und erfasst die Ausfahrtszeit TS2 sowie die Kennung 5 bzw. LPN des Fahrzeugs 1 als "Ausfahrtskennung" LPN2. Das Ausfahrtsbild PIC2, die Ausfahrtskennung LPN2 und die Ausfahrtszeit TS2 werden vorübergehend in einem internen Speicher 10 der Ausfahrtsstation 7 gespeichert.The exit station 7 in turn picks up an exit image PIC 2 of the vehicle 1 when passing the exit 4 and detects the exit time TS 2 as well as the identification 5 or LPN of the vehicle 1 as "exit recognition" LPN 2 . The exit picture PIC 2 , the exit identifier LPN 2 and the exit time TS 2 are temporarily stored in an internal memory 10 of the exit station 7.

Die Ein- und Ausfahrtsstationen 6, 7 können über eine Datenverbindung 11 miteinander direkt in Verbindung stehen, und das nachfolgend beschriebene Verfahren kann beispielsweise direkt in der Ausfahrtsstation 7 ausgeführt werden. Alternativ können die Ein- und Ausfahrtsstationen 6, 7 mit einem Auswertungsrechner 12 in Verbindung stehen, in dem ihre Daten in der nachfolgend beschriebenen Weise ausgewertet werden.The entry and exit stations 6, 7 can communicate directly with one another via a data connection 11, and the method described below can be carried out, for example, directly in the exit station 7. Alternatively, the entry and exit stations 6, 7 can communicate with an evaluation computer 12 in which their data are evaluated in the manner described below.

Fig. 2 zeigt das mit den Komponenten von Fig. 1 durchgeführte Verfahren der Erfindung im Detail. In einem ersten Schritt 13 wird in der Einfahrtsstation 6 für jedes Fahrzeug 1, das die Einfahrt 3 passiert, eine eigene, eindeutige und zufällige Zugriffskennung ("Random-ID") RID erzeugt. Die Zugriffskennung RID kann zufallsgesteuert erzeugt, oder einer Liste beliebiger vorgespeicherter Zugriffskennungen entnommen werden, die nur in der Einfahrtsstation 6 bekannt ist. Im Schritt 13 werden ferner in der beschriebenen Art und Weise das Einfahrtsbild PIC1 aufgenommen und die Einfahrtszeit TS1 sowie die Einfahrtskennung LPN1 erfasst, beispielsweise durch OCR-Auswertung des Einfahrtsbildes PIC1 hinsichtlich des Fahrzeugkennzeichens des Fahrzeugs 1. Anschließend wird im Schritt 13 aus der Einfahrtskennung LPN1 ein Hashwert h gebildet. Der Hashwert h wird in einer - wie eingangs erörtert - praktisch unumkehrbaren Weise aus der Einfahrtskennung LPN1 erzeugt. Fig. 2 shows that with the components of Fig. 1 performed method of the invention in detail. In a first step 13, a separate, unique and random access identifier ("random ID") RID is generated in the entry station 6 for each vehicle 1 that passes the entrance 3. The access identifier RID may be randomly generated, or taken from a list of any prestored access identifiers known only at the entry station 6. In step 13, the entrance image PIC 1 is also recorded in the manner described and the entry time TS 1 and the entrance recognition LPN 1 detected, for example by OCR evaluation of the entrance image PIC 1 with respect to the vehicle registration number of the vehicle 1. Subsequently, in step 13 the entry identifier LPN 1 has formed a hash h. The hash value h is generated in a virtually irreversible manner from the entry identifier LPN 1 , as discussed at the beginning.

Wenn anstelle eines Hashwerts ein verschlüsselter Wert der Einfahrtskennung LPN1 gebildet wird, wird dazu ein Schlüssel verwendet, der nur in den Ein- und Ausfahrtsstationen 6, 7 bekannt ist. Alle Ausführungen, die hier unter Bezugnahme auf Hashwerte gegeben werden, treffen auch auf solche verschlüsselten Werte zu.If an encrypted value of the entry identifier LPN 1 is formed instead of a hash value, a key is used for this purpose, which is known only in the entry and exit stations 6, 7. All statements given herein by reference to hash values also apply to such encrypted values.

Im Schritt 14 wird das Einfahrtsbild PIC1 unter der zufälligen Zugriffskennung RID im ersten Speicher 8 der Einfahrtsstation 6 gespeichert. Der Speicher 8 ist ein gesonderter, bevorzugt auch physisch in Form einer "Blackbox" isolierter und datenschutztechnisch versiegelter und zertifizierter Speicher, aus welchem die darin einmal gespeicherten Einfahrtsbilder PIC1 nur mehr anhand ihrer jeweiligen Zugriffskennung RID abrufbar sind.In step 14, the entry image PIC 1 is stored under the random access identifier RID in the first memory 8 of the entry station 6. The memory 8 is a separate, preferably physically also in the form of a "black box" isolated and data protection technology sealed and certified memory, from which the once stored therein Einfahrtsbilder PIC. 1 only accessible on the basis of their respective access identifier RID.

Im Schritt 15 wird der Hashwert h(LPN1) zusammen mit der Einfahrtszeit TS1 und der Zugriffskennung RID als Datensatz 16 im zweiten Speicher 9 der Einfahrtsstation 6 gespeichert.In step 15, the hash value h (LPN 1 ) is stored together with the entry time TS 1 and the access identifier RID as a data record 16 in the second memory 9 of the entry station 6.

Zu einem späteren Zeitpunkt, im Schritt 17, passiert ein Fahrzeug 1 die Ausfahrt 4, wobei zunächst noch nicht feststeht, ob es sich um dasselbe Fahrzeug 1 handelt, das in den Schritten 13 - 15 die Einfahrt 3 passiert hat. Im Schritt 17 erfasst die Ausfahrtsstation 7 die Ausfahrtskennung LPN2 und die Ausfahrtszeit TS2 sowie die Ausfahrtskennung LPN2, welche z.B. wieder aus einem Ausfahrtsbild PIC2 durch OCR-Auswertung eines darin erkennbaren Fahrzeugkennzeichens erhalten werden kann. Alternativ oder ergänzend könnte die Ausfahrtskennung LPN2 auch aus einer Funkkennung oder anderen charakteristischen Merkmalen des Fahrzeugs 1 ermittelt werden, in welchem Fall die Aufnahme eines Ausfahrtsbildes PIC2 nicht zwingend erforderlich ist, für spätere Beweiszwecke jedoch günstig. Aus der Ausfahrtskennung LPN2 berechnet die Ausfahrtsstation 7 wieder einen Hashwert h(LPN2) in der eingangs erörterten Weise.At a later time, in step 17, a vehicle 1 passes the exit 4, it being still not clear at first whether it is the same vehicle 1 that has passed the entrance 3 in steps 13-15. In step 17, the exit station 7 detects the exit identifier LPN 2 and the exit time TS 2 as well as the exit identifier LPN 2 , which can be obtained, for example, again from an exit picture PIC 2 by OCR evaluation of a vehicle license plate recognizable therein. Alternatively or additionally, the exit identifier LPN 2 could also be determined from a radio identifier or other characteristic features of the vehicle 1, in which case the inclusion of an exit image PIC 2 is not absolutely necessary, but favorable for later proof purposes. From the exit identifier LPN 2 , the exit station 7 again calculates a hash value h (LPN 2 ) in the manner discussed above.

Wenn in der Einfahrtsstation anstelle eines Hashwerts ein verschlüsselter Wert der Einfahrtskennung LPN1 verwendet wurde, wird auch in der Ausfahrtsstation anstelle eines Hashwerts der Ausfahrtskennung LPN2 ein verschlüsselter Wert derselben gebildet, u.zw. unter Verwendung desselben Schlüssels (oder des anderen Teiles eines entsprechenden Public/Private-Key-Paares für die Ein- und Ausfahrtsstationen 6, 7).If an encrypted value of the entry identifier LPN 1 was used in the entry station instead of a hash value, an encrypted value of the same is also formed in the exit station instead of a hash value of the exit identifier LPN 2 , u.zw. using the same key (or the other part of a corresponding public / private key pair for the entry and exit stations 6, 7).

Im anschließenden Schritt 18 wird der Hashwert h der Ausfahrtskennung LPN2 verwendet, um aus dem zweiten Speicher 9 der Einfahrtsstation 6 jenen Datensatz 16 zu ermitteln, der denselben Hashwert h enthält, wie er aus der Einfahrtskennung LPN1 erhalten wurde. Dadurch können die zu ein und demselben Fahrzeug 1 gehörende Einfahrtszeit TS1 und die dazu gespeicherte Zugriffskennung RID ermittelt werden, ohne die Fahrzeugkennung 5 bzw. LPN direkt zwischen den Ein- und Ausfahrtsstationen 6, 7 austauschen zu müssen.In the subsequent step 18, the hash value h of the exit identifier LPN 2 is used to determine from the second memory 9 of the entry station 6 that data record 16 which contains the same hash value h as obtained from the entry identifier LPN 1 . This can be one owned by a single vehicle 1 entry time TS 1 and its stored access identifier RID be determined without the vehicle identification 5 or LPN directly between the entry and exit stations 6, 7 must be replaced.

Wenn die Ein- und Ausfahrtskennungen LPN1, LPN2 mittels OCR aus den Ein- und Ausfahrtsbildern PIC1, PIC2 ermittelt werden, kann aufgrund der Fehlerträchtigkeit üblicher OCR-Verfahren der Fall eintreten, daß anstelle eines einzigen korrekten OCR-Leseergebnisses mehrere verschiedene "Kandidaten"-Kennungen LPN1 bzw. LPN2 als mögliche OCR-Leseergebnisse erhalten werden. Aus solchen multiplen Kandidaten-Kennungen LPN1, LPN2 können demgemäß auch mehrere verschlüsselte bzw. gehashte Kandidaten-Hashwerte h auf jeder Seite, d.h. in der Einfahrtsstation und in der Ausfahrtsstation, gebildet werden; beim genannten Abrufen des Datensatzes 16 aus dem zweiten Speicher 9 werden demgemäß die verschiedenen Kandidaten-Hashwerte h beider Seiten jeweils miteinander verglichen, um den "passenden" Datensatz 16, bei dem diese Hashwerte h übereinstimmen, herauszufinden. Da es extrem unwahrscheinlich ist, daß die OCR-Verfahren in den Ein- und Ausfahrtsstationen zu exakt denselben Lesefehlern und damit denselben Sätzen von Kandidaten-Kennungen und folglich Kandidaten-Hashwerten h führen, liegt mit extrem hoher Zuverlässigkeit genau nur eine einzige Übereinstimmung zwischen den (Kandidaten-)Hashwerten h der beiden Seiten vor, so daß das Verfahren auch in solchen Fällen zum richtigen Datensatz 16 führt.If the entry and exit identifications LPN 1 , LPN 2 are determined by means of OCR from the entry and exit pictures PIC 1 , PIC 2 , due to the error rate of conventional OCR methods, the case may occur that instead of a single correct OCR reading result several different " Candidate IDs LPN 1 and LPN 2, respectively, as possible OCR read results. From such multiple candidate identifiers LPN 1 , LPN 2 , accordingly, a plurality of encrypted or hashed candidate hash values h can also be formed on each side, ie in the entry station and in the exit station; Accordingly, in the retrieval of the record 16 from the second memory 9, the various candidate hash values h of both pages are compared with each other to find out the "matching" record 16 at which these hash values h coincide. Since it is extremely unlikely that the OCRs in the ingress and egress stations will result in exactly the same read errors, and hence the same sets of candidate identifiers and hence candidate hashes h, with very high reliability, there will be exactly one match between the ( Candidate) hash values h of the two sides, so that the method leads to the correct data record 16 even in such cases.

Im Schritt 19 wird daraufhin verglichen, ob die Ausfahrtszeit TS2 dieses Fahrzeugs 1 innerhalb einer vorgegebenen Zeitspanne tmax von der Einfahrtszeit TS1 desselben Fahrzeugs 1 liegt. Wenn dies der Fall ist (Zweig "y" des Vergleichs 19), dann handelt es sich offensichtlich um ein Geschwindigkeitsdelikt: Das Fahrzeug 1 hat dann die Strecke L in einer kürzeren als der zulässigen Zeit tmax und damit mit einer höheren als der zulässigen Höchstgeschwindigkeit durchfahren. In diesem Fall wird im Schritt 20 auf den Blackbox-Speicher 8 unter Verwendung der im Datensatz 16 angegebenen Zugriffskennung RID zugegriffen, um daraus das unter der Zugriffskennung RID gespeicherte Einfahrtsbild PIC1 abzurufen. Das Einfahrtsbild PIC1 kann direkt zur Ahndung ("Enforcement") des Verkehrsdelikts verwendet oder in einem optionalen Schritt 21 zusammen mit den Ein- und Ausfahrtszeiten TS1, TS2 und dem optionalen Ausfahrtsbild PIC2 in einem Speicher, z.B. auch im Speicher 10, der Ausfahrtsstation 7 archiviert werden.In step 19 it is then compared whether the exit time TS 2 of this vehicle 1 is within a predetermined time period t max of the entry time TS 1 of the same vehicle 1. If this is the case (branch "y" of the comparison 19), then it is obviously a speeding error: The vehicle 1 then has the distance L in a shorter than the allowable time t max and thus with a higher than the maximum speed passed through. In this case, in step 20, the black box memory 8 is accessed using the access identifier RID specified in the data record 16, to derive therefrom the information stored under the access identifier RID Access image PIC 1 . The entrance image PIC 1 can be used directly for punishment ("enforcement") of the traffic offense or in an optional step 21 together with the entry and exit times TS 1 , TS 2 and the optional exit image PIC 2 in a memory, eg also in the memory 10. the exit station 7 are archived.

Die Zeitspanne tmax kann auch abhängig von der Art (Klasse) des Fahrzeugs 1 vorgegeben werden. Zu diesem Zweck kann das Ausfahrtsbild PIC2 automatisch analysiert werden, um das darin abgebildete Fahrzeug 1 zu klassifizieren; abhängig vom Klassifizierungsergebnis können dann unterschiedliche Zeitspannen tmax aus einer gespeicherten Tabelle ermittelt und vorgegeben werden, um unter Berücksichtigung der Länge L der Strecke 2 bestimmte Geschwindigkeitslimits für bestimmte Fahrzeugarten zu definieren, z.B. 130 km/h für PKWs, 100 km/h für LKWs, 80 km/h für Fahrzeuge mit Anhängern, usw.The time span t max can also be predetermined depending on the type (class) of the vehicle 1. For this purpose, the exit image PIC 2 can be automatically analyzed to classify the vehicle 1 depicted therein; Depending on the classification result, different time intervals t max can then be determined and predefined from a stored table in order to define specific speed limits for certain vehicle types, taking into account the length L of the route 2, eg 130 km / h for cars, 100 km / h for trucks. 80 km / h for vehicles with trailers, etc.

Ein (nicht dargestellter) Rechner kann die im Schritt 21 erzeugten Daten zur weiteren Ahndung abrufen, und nach dem Abruf werden bevorzugt alle Daten in der Ausfahrtsstation 7 und im Speicher 10 gelöscht.A computer (not shown) may retrieve the data generated in step 21 for further sanction, and upon retrieval, preferably, all data in the exit station 7 and memory 10 is deleted.

Der Blackbox-Speicher 8 (optional auch der zweite Speicher 9) kann so ausgelegt werden, dass darin fortlaufend all jene Einfahrtsbilder PIC1 (bzw. optional auch jene Daten TS1, h(LPN1)) gelöscht werden, welche nach einer vorgegebenen Zeitspanne vom Zeitpunkt TS1 ihrer Erfassung, bevorzugt nach der genannten Zeitspanne tmax, nicht abgerufen werden. Bei diesen "nicht abgerufenen" Einfahrtsbildern PIC1 handelt es sich offensichtlich um Bilder von Fahrzeugen 1, die kein Geschwindigkeitsdelikt begangen haben, so dass sie nach Ablauf der Zeitspanne tmax aus Datenschutzgründen gelöscht werden (Schritt 22). Zu diesem Zweck können die Bildaufnahme- bzw. Einfahrtszeiten TS1 direkt im ersten Speicher 8 zu den Einfahrtsbildern PIC1 gespeichert werden.The black box memory 8 (optionally also the second memory 9) can be designed so that it continuously deletes all those entry pictures PIC 1 (or optionally also those data TS 1 , h (LPN 1 )) after a predetermined period of time from the time TS 1 of their detection, preferably after the said time period t max , not be retrieved. These "unrequested" entry pictures PIC 1 obviously are pictures of vehicles 1 that have not committed a speeding offense so that they are deleted after expiration of the time period t max for privacy reasons (step 22). To this end, the image recording or access times TS 1 can be stored in the first storage 1 directly to the entrance 8 pictures PIC.

Alternativ kann das Löschen der "deliktfreien" Einfahrtsbilder PIC1 im ersten Speicher 8 (und optional der Daten im zweiten Speicher 9) auch von der Einfahrtsstation 6 unter Verwendung der Einfahrtszeiten TS1 aus dem zweiten Speicher 9 angestoßen werden, wenn die aktuelle Zeit größer ist als die Einfahrtszeit TS1 plus der Zeitspanne tmax ist.Alternatively, the deletion of the "no-entry" entry pictures PIC 1 in the first memory 8 (and optionally the data in the second memory 9) are also triggered by the entry station 6 using the entry times TS 1 from the second memory 9 if the current time is greater than the entry time TS 1 plus the time period t max .

Noch eine weitere Alternative ist in dem optionalen Schritt 23 dargestellt, welcher beim "Nein"-Zweig des Vergleichs 19 durchlaufen wird. Das Löschen der deliktfreien Einfahrtsbilder PIC1 wird im Schritt 23 von der Ausfahrtsstation 7 angestoßen, welche eine Aufforderung an den Blackbox-Speicher 8 (und optional den zweiten Speicher 9) bzw. die Einfahrtsstation 6 zum Löschen des Einfahrtsbildes (und optional der Daten des Speichers 9) sendet. Ein regelkonformes Fahrzeug hinterläßt somit keine identifizierbaren Spuren im System, was höchste Datensicherheit gewährleistet.Yet another alternative is shown in the optional step 23, which is traversed at the "no" branch of the comparison 19. The clearing of the entry-free entry pictures PIC 1 is initiated in step 23 by the exit station 7, which sends a request to the black box memory 8 (and optionally the second memory 9) or the entry station 6 for deleting the entry picture (and optionally the data of the memory 9) sends. A compliant vehicle thus leaves no identifiable traces in the system, which ensures the highest data security.

Die Schritte 17 - 21 bzw. 23 des Verfahrens können - mit Ausnahme der Erfassung der Ausfahrtszeit TS2 und des Ausfahrtsbildes PIC2 ― statt in der Ausfahrtsstation 7 auch in dem (optionalen) Auswerterechner 12 durchgeführt werden, falls gewünscht.The steps 17 - 21 or 23 of the method can - except in the detection of the exit time TS 2 and the exit image PIC 2 - instead of in the exit station 7 in the (optional) evaluation computer 12 are performed, if desired.

Die Ein- und Ausfahrtsbilder PIC1, PIC2 können optional mit einem Schlüssel einer Behörde verschlüsselt und in den entsprechenden Speichern 8, 9, 10 für Kontrollabfragen durch die Behörde bereitgestellt werden.The entry and exit pictures PIC 1 , PIC 2 can optionally be encrypted with a key of an authority and provided in the corresponding memories 8, 9, 10 for control inquiries by the authority.

Die Erfindung ist nicht auf die dargestellten Ausführungsformen beschränkt, sondern umfasst alle Varianten und Modifikationen, die in den Rahmen der angeschlossenen Ansprüche fallen.The invention is not limited to the illustrated embodiments, but includes all variants and modifications that fall within the scope of the appended claims.

Claims (12)

  1. A method for capturing images (PIC1) of vehicles (1) passing through a section (2) between an entry (3) and an exit (4) at excessive speeds, comprising:
    generating a random access identifier (RID) for a vehicle (1) at the entry (3),
    capturing an image (PIC1) of the vehicle (1) at the entry (3) and storing the entry image (PIC1) and the access identifier (RID) in a first memory (8) which can only be accessed via this access identifier (RID),
    recording the entry time (TS1) and at least one identifier (LPN1) of the vehicle at the entry (3), forming an encrypted or hashed value (h) of this entry identifier (LPN1) and storing the entry time (TS1), the said value (h(LPN1)) and the access identifier (RID) as a data set (16) in a second memory (9),
    recording the exit time (TS2) and at least one identifier (LPN2) of the vehicle (1) at the exit (4), forming an encrypted or hashed value (h) of this exit identifier (LPN2) and ascertaining the data set (16) with the same encrypted or hashed value (h) from the second memory (9), and
    if the exit time (TS2) lies within a preset time span (tmax) from the entry time (TS1) of this data set (16), using the access identifier (RID) from this data set (16) for accessing the first memory (8), in order to retrieve the associated stored entry image (PIC1) of the vehicle (1).
  2. The method according to claim 1, characterised in that at the exit (4) an exit image (PIC2) of the vehicle (1) is captured and a vehicle class ascertained from this, and in that the time span (tmax) is preset depending upon the ascertained class.
  3. The method according to claim 1 or claim 2, characterised in that the entry images (PIC1) in the first memory (8) are each provided with their capturing time (TS1) and in that each entry image (PIC1) not retrieved within a preset time span (tmax) is deleted from the first memory (8).
  4. The method according to claim 1 or claim 2, characterised in that if the exit time (TS2) does not fall within the said time span (tmax) from the entry time (TS1) of the said data set (16), the access identifier (RID) from this data set (16) is used, in order to delete the associated entry image (PIC1) stored in the first memory (8).
  5. The method according to one of claims 1 to 4, characterised in that the first memory (8) is physically separated from the second memory (9).
  6. The method according to one of claims 1 to 5, characterised in that at the exit (4) an exit image (PIC2) of the vehicle (1) is captured and each successfully retrieved entry image (PIC1) is archived together with the exit image (PIC2) and the identifier (LPN) of the vehicle for the purpose of evidence.
  7. The method according to one of claims 1 to 6, characterised in that the license plate number is used as the identifier (LPN) and is captured by optical character recognition in the entry and exit images (PIC1, PIC2) of the vehicle (1).
  8. The method according to one of claims 1 to 7, characterised in that a vehicle's speed is ascertained from the entry and exit times (TS1, TS2) of the vehicle (1) and the length (L) of the passed-through section (2) between the entry and exit (3, 4).
  9. The method according to one of claims 1 to 8, characterised in that at the entry (3) and the exit (4) the respective images (PIC1, PIC1) and entry and exit times (TS1, TS1) are provided with an electronic signature of an entry/exit station (6, 7).
  10. The method according to one of claims 1 to 9, characterised in that when the first memory (8) is accessed, the entry and exit times (TS1, TS1) are also transferred to the first memory (8) and in that retrieval of the entry image (PIC1) is allowed only if the transferred entry and exit times (TS1, TS2) fall within said preset time span (tmax) .
  11. The method according to claims 9 and 10, characterised in that during this process the first memory (8) also checks the signatures of the entry and exit times (TS1, TS2).
  12. The method according to one of claims 1 to 11, characterised in that the entry and exit images (PIC1, PIC2) are made available in the respective memories (8, 9, 10) for control checks after they have been encrypted with a special key.
EP10450197A 2010-12-27 2010-12-27 Method for recording vehicles Not-in-force EP2469497B1 (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
SI201030145T SI2469497T1 (en) 2010-12-27 2010-12-27 Method for recording vehicles
EP10450197A EP2469497B1 (en) 2010-12-27 2010-12-27 Method for recording vehicles
PL10450197T PL2469497T3 (en) 2010-12-27 2010-12-27 Method for recording vehicles
ES10450197T ES2401674T3 (en) 2010-12-27 2010-12-27 Procedure to record vehicle images
DK10450197.8T DK2469497T3 (en) 2010-12-27 2010-12-27 Procedure for capturing images of vehicles
PT104501978T PT2469497E (en) 2010-12-27 2010-12-27 Method for recording vehicles
CA2756910A CA2756910A1 (en) 2010-12-27 2011-11-04 Method for capturing images of vehicles
AU2011250695A AU2011250695B2 (en) 2010-12-27 2011-11-10 Method for capturing images of vehicles
NZ596440A NZ596440A (en) 2010-12-27 2011-11-15 Method for capturing images of vehicles
US13/330,379 US20120162432A1 (en) 2010-12-27 2011-12-19 Method for capturing images of vehicles
CN2011104270504A CN102568219A (en) 2010-12-27 2011-12-19 Method for capturing images of vehicles
CL2011003242A CL2011003242A1 (en) 2010-12-27 2011-12-21 A method of capturing images of vehicles passing through a section or section of a highway at excessive speed.
RU2011153165/11A RU2011153165A (en) 2010-12-27 2011-12-26 METHOD FOR Capturing IMAGES OF VEHICLES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10450197A EP2469497B1 (en) 2010-12-27 2010-12-27 Method for recording vehicles

Publications (2)

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EP2469497A1 EP2469497A1 (en) 2012-06-27
EP2469497B1 true EP2469497B1 (en) 2012-12-19

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EP10450197A Not-in-force EP2469497B1 (en) 2010-12-27 2010-12-27 Method for recording vehicles

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US (1) US20120162432A1 (en)
EP (1) EP2469497B1 (en)
CN (1) CN102568219A (en)
AU (1) AU2011250695B2 (en)
CA (1) CA2756910A1 (en)
CL (1) CL2011003242A1 (en)
DK (1) DK2469497T3 (en)
ES (1) ES2401674T3 (en)
NZ (1) NZ596440A (en)
PL (1) PL2469497T3 (en)
PT (1) PT2469497E (en)
RU (1) RU2011153165A (en)
SI (1) SI2469497T1 (en)

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US9641806B2 (en) * 2013-03-12 2017-05-02 3M Innovative Properties Company Average speed detection with flash illumination
EP2838075A1 (en) * 2013-08-15 2015-02-18 VITRONIC Dr.-Ing. Stein Bildverarbeitungssysteme GmbH Method and device for detecting instances in which the maximum speed on a route section is exceeded
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AT8939U1 (en) 2005-09-29 2007-02-15 Siemens Ag Oesterreich METHOD AND DEVICE FOR MONITORING THE SPEED OF VEHICLES
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DE102007059346B4 (en) * 2007-12-10 2009-11-19 Siemens Ag Method and device for detecting a speeding violation of a vehicle
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US20120001737A1 (en) * 2010-05-13 2012-01-05 Amir Berger Method and system for computed radiography

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CN102568219A (en) 2012-07-11
EP2469497A1 (en) 2012-06-27
ES2401674T3 (en) 2013-04-23
US20120162432A1 (en) 2012-06-28
RU2011153165A (en) 2013-07-10
SI2469497T1 (en) 2013-03-29
DK2469497T3 (en) 2013-04-02
CA2756910A1 (en) 2012-06-27
AU2011250695A1 (en) 2012-07-12
PL2469497T3 (en) 2013-05-31
NZ596440A (en) 2012-04-27
PT2469497E (en) 2013-03-11
AU2011250695B2 (en) 2013-05-23
CL2011003242A1 (en) 2013-05-17

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