EP1224632B1 - Dispositif de detection - Google Patents

Dispositif de detection Download PDF

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Publication number
EP1224632B1
EP1224632B1 EP01954036A EP01954036A EP1224632B1 EP 1224632 B1 EP1224632 B1 EP 1224632B1 EP 01954036 A EP01954036 A EP 01954036A EP 01954036 A EP01954036 A EP 01954036A EP 1224632 B1 EP1224632 B1 EP 1224632B1
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Prior art keywords
signal
sensor
detection device
designed
radiation
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German (de)
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EP1224632A1 (fr
Inventor
André HAUFE
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Iris GmbH IG Infrared and Intelligent Sensors
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Iris GmbH IG Infrared and Intelligent Sensors
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    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07CTIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00Individual registration on entry or exit

Definitions

  • the invention relates to a detection device for detecting persons or objects and their direction of movement, with a sensor arrangement for detecting electromagnetic radiation with the wavelength of visible and / or invisible light, which is reflected or emitted by a person or an object and with an evaluation unit which is connected to the sensor arrangement and is designed to derive a signal from the radiation detected by the radiation sensor arrangement and to emit a detection signal for as far as possible every object or person detected by the radiation sensor arrangement.
  • the invention relates to a counting device for persons, which is connected to a corresponding detection device.
  • detection devices which, with respect to the intended direction of movement of the passengers, have sensor elements arranged one behind the other and determine the direction of movement of detected persons by correlation of the radiation detected by the sensor elements. Such detection devices are thus able to determine not only the presence of an object or a person as in a simple light barrier, but also their direction of movement.
  • One problem is to reliably recognize non-targeted people who are standing in the entrance area of a bus, for example, or to distinguish those originating from different persons in close proximity.
  • a detection device which is able to detect the intensity distribution of a person emanating heat radiation in a matrix-like manner.
  • the US 5,187,688 and US 5,255,301 each show an arrangement of a plurality of sensor elements with which can be determined during runtime measurement of the distance between a respective sensor element and the surface of a person.
  • a detection device of the type mentioned in the introduction which comprises individualizing means which are connected to the evaluation unit and designed to obtain information or information individualizing an object or person and which is connected to a memory which is formed, at least one section the history signal and the object or the person individualizing information as a characteristic parameter associated with the history signal store.
  • the detection device comprises parameter determination means, which are connected to the evaluation unit (18, 36) and designed to emit an additional signal.
  • the evaluation unit (18; 36) is designed to form the characteristic parameter as a function of the additional signal.
  • the parameter determination means (16, 18.1) comprise a radiation source (16) for radiation detectable by the sensor arrangement (12, 14; 32, 34) and an evaluation module (36.1 ').
  • the radiation sensor arrangement comprises a sensor matrix (32.1) and both the radiation source and the radiation sensor arrangement are connected to the evaluation module.
  • the evaluation module is designed to form from the radiation source (44) a radiation reflected by a person or an object and detected by the sensor matrix (32.1) as an additional signal determining the characteristic parameter and the information individualizing a respective person represents, wherein the matrix corresponds to the three-dimensional surface contour of a detected object or a detected person.
  • the parameter is derived from the history signal and an additional signal.
  • This additional signal is obtained by an additional passive sensor and derived from an active radiation source.
  • the parameter is multi-dimensional, ie a matrix with several values, which in particular individualize a person.
  • the invention is based on the idea of combining in a manner known per se a passively obtainable progress signal with at least one characteristic parameter, so that an at least two-dimensional signal or parameter matrix results, which includes information about the time course of the radiation detected by the sensor arrangement additional information combined.
  • a passively obtainable progress signal with at least one characteristic parameter, so that an at least two-dimensional signal or parameter matrix results, which includes information about the time course of the radiation detected by the sensor arrangement additional information combined.
  • Such an arrangement allows, in itself from the DE 42 20 508 or the EP 0 515 635 known manner from the waveform signals to derive a motion signal by signal correlation and assign this motion signal by means of the or the characteristic parameters as reliably as possible to an individual object or an individual person.
  • the characteristic parameter describes a person-individual parameter, such as hair color, size, stature, etc.
  • the additional, characteristic parameter could be determined in a passive arrangement solely from the signal morphology. It is, however, according to the invention an idea, which supports the invention, to provide the detection device with additional means for determining the characteristic parameter.
  • additional means two alternatives have proven to be particularly suitable in an unpredictable manner, namely a radiation source for realizing an active arrangement of the detection device, or additionally an additional sensor for detecting a further signal besides the radiation, e.g. an acoustic signal or an odor signal.
  • the additional parameter is determined by evaluating the radiation reflected by an object or a person in relation to the radiation emitted by the radiation source. In this way, information about the duration of a signal from the radiation source about a person reflecting the sensor arrangement or the degree of reflection can be obtained.
  • the range greater than 1400 nm is preferred. In an active arrangement with a radiation source, this wavelength range also applies to the radiation source. It has been found that in this wavelength range, both a favorable signal-to-noise ratio as well as achieve a high eye safety.
  • a radiation power lying in this wavelength range can be more than 1000 times greater than, for example, in the range of 1050 nm, without this being associated with a health risk.
  • embodiments of the detection device are preferred, which are designed for arrangement in input and output openings such as doors of vehicles or rooms.
  • a preferred application of the detection device is the passenger count, for example in buses.
  • the detection device is preferably connected to a local encoder such as a GPS receiver.
  • a local encoder such as a GPS receiver.
  • the numbers of passengers determined by the detection device by means of a counting unit for the passengers entering and exiting passengers can be assigned to specific routes or stops of a bus.
  • integrated vehicle management is thus possible. This can be used for a whole fleet, if the detection devices and local givers of different vehicles are configured via radio to a central connectable.
  • the radiation source is arranged, for example, in the entrance area of a vehicle such that the radiation emanating from the radiation source strikes the person crossing the entrance area from above and is reflected by the head of the person from the duration of the signal Person is determinable.
  • the characteristic parameter to be stored then corresponds to the size of the person.
  • the synchronously recorded progress signal can be uniquely assigned to a person of the appropriate size by means of the characteristic parameter. Since most persons differ in size at least within certain limits, a largely individual assignment of progress signals is possible in this way, so that also such progress signals are to be assigned as starting from two different persons, which are close to each other from two persons present outgoing radiation.
  • An essential difference to that from the DE 197 21 741 known device is that, for example, in the case of person size determination for Forming the characteristic parameter not the distance function - ie the distance change - stored and compared with other distance functions, but only the minimum of the distance between the radiation source and the sensor arrangement on the one hand and the top of a person's head on the other.
  • the characteristic parameter is not derived from a comparison or correlation of functions among waveforms, but is formed from a signal alone.
  • This signal can originate, for example, from an infrasound sensor for detecting heart sounds and thus the heart rate, or from the already described arrangement for detecting the person size or also according to the invention by a sensor matrix arrangement onto which an image of the persons crossing an entrance area is projected, so that from the Image can be obtained a characterizing the contour of the person parameters.
  • the sensor matrix arrangement can be connected to a radiation source of the type described above to form an active sensor, so that a three-dimensional contour of a detected person can be recorded as a characteristic parameter.
  • the detection device For receiving such or other signals individualizing a person, at least one corresponding sensor is preferably provided in each case. This sensor is preferably switched on when the history signal indicates that the detected person is currently in the greatest proximity to the sensor. Alternatively, the sensor remains continuously on and only that portion of the signal originating from the sensor is utilized, which was recorded at the time of closest approach to the sensor.
  • the detection device preferably comprises corresponding location or distance determination means and a selection unit connected to these, which selects the corresponding sensor-derived signal section for further processing.
  • the detection device preferably corresponding location or distance determining means and a selection unit connected thereto, which selects the corresponding sensor-derived signal portion for further processing.
  • a plurality of characteristic parameters or parameter profiles can be obtained simultaneously and combined with one another in order to allow an even more precise differentiation of the information obtained and thus an even clearer individualization of the detected persons. Further preferred embodiments are mentioned in the subclaims.
  • These include in particular detection devices with an additional sensor for individual characteristics such as height, shape, hair color, heart tones or smell of a person or an object.
  • Evaluation unit 18 is also connected to a memory 20 and a counting unit 22.
  • the sensor 12 and the radiation source 16 are connected together with the distance module 18. 1 of the evaluation unit 18.
  • the distance module 18. 1 the phase relationship between the radiation emitted by the radiation source 16 and the radiation received by the sensor 12 is determined, thus determining the transit time required for the signal emitted by the radiation source 16 and reflected by an object to be picked up by the sensor 12 to become.
  • the distance between radiation source 16 and sensor 12 on the one hand and a reflective surface on the other hand can be determined.
  • the distance to a reflecting object can also be determined directly via the wavelength of the signal emitted by the radiation source 16 and the phase relationship between emitted and received radiation.
  • the technologies required for this purpose are known in principle.
  • the radiation source 16 and the sensor 12 are arranged vertically above the entrance of a bus, for example, and the distance to the ground is known, it is possible to deduce the minimum of a sequence of successive distance measurements on the size of a person passing through the access area. This minimum is stored as a person size in the memory 20 and represents a parameter characteristic of the person.
  • the two sensors 12 and 14 record and correlate the radiation signals reflected or emitted by a person. Due to the movement of a person 24 who, for example, is entering the bus, the two radiation sensors 12 and 14 record similar course signals that are time-displaced relative to one another. From the distance of the two sensors 12 and 14 and the time offset between the waveform signals recorded by them, the direction of movement and the speed of a person ascending or descending 24 can be determined.
  • the correlation module 18.2 determined information to be linked by the distance module 18.1.
  • a person standing in the entrance area of a bus can easily be identified for the distance module 18.1.
  • the size information about a person is stored in such a manner as to be associated with the history signal output from that person. The combination of the two pieces of information is highly characteristic of a person and makes it possible to recognize a person not only when boarding, but also when getting out.
  • the counting unit 22 is connected to the assignment module 18.3 and designed such that a counter is incremented by one for each person identified as being to be entranced by the assignment module 18.3 and is decremented by one for each departing person.
  • the count in the counting unit 22 thus indicates the number of persons who are, for example, in a bus.
  • the counting unit can do this be connected to a plurality of evaluation units 18, which are assigned to several input areas of a means of transport.
  • the detection device 10 'in FIG. 2 has a passive sensor unit formed by the sensors 12 and 14 for receiving the progress signal.
  • an additional sensor 26 is provided, which receives a person-individual characteristic, such as the hair color or heart sounds or the like.
  • the evaluation of the additional signal is carried out by an evaluation module 18.1 'of the evaluation unit 18'.
  • the assignment to the recorded by the sensors 12 and 14 history signal takes place, as already for FIG. 1 described by the assignment module 18.3.
  • the evaluated additional signal is associated with the history signal stored in the memory 20.
  • the detection device 30 in FIG. 3 is similar in construction, as the detection device 10 from FIG. 1 , Also provided are two infrared sensors 32 and 34, an evaluation unit 36, a memory 38 and a counting unit 40. An active radiation source such as the radiation source 16 is not provided FIG. 1 ,
  • the sensor 32 contains a plurality of sensor elements 32.1 in a matrix-like arrangement.
  • the sensor elements 32.1 are in the focus of an imaging device such as in a converging lens 32.2.
  • the radiation emitted by a person 42 is thus projected onto the sensor matrix 32. 1 as an image of the person 42.
  • Each person results in a largely individual projection pattern, which is characteristic of the respective person 42.
  • This projection pattern is fed to an image module 36. 1 of the evaluation unit 36.
  • a characteristic pattern is extracted from the projection pattern as a characteristic parameter and stored in the memory 38.
  • signals are recorded by means of the sensors 32 and 34. It is sufficient if the sensor 34 contains only one sensor element and for the course signal of the sensor 32, only one sensor element of the sensor matrix 32.1 is used.
  • the two progress signals are, as already for FIG. 1 , in a correlation module 36.2 of the evaluation unit 36 correlated with each other to a movement information receive.
  • This movement information is stored in the memory 38 associated with the corresponding characteristic pattern.
  • An assignment module 36.3 of the evaluation unit 36 works analogously to the assignment module 18.3 FIG. 1 and outputs, depending on the optionally stored output values of the image module 36.1 and the correlation module 36.2 for each rising or falling person from a signal which serves to control the counting unit 40 and increases or decreases in this counter accordingly.
  • the detection device 30 'differs FIG. 4 from the detection device 30 FIG. 3 essentially in that it comprises a radiation source 44, which makes it possible to expand the sensor matrix 32.1 into an active sensor unit.
  • a radiation source 44 By means of the radiation source 44 and the sensor matrix 32.1, it is possible to form a three-dimensional contour of an object or a person in the detection area of the sensor matrix 32.1. This is done by evaluating the radiation detected by the sensor matrix 32.1 with respect to the radiation emitted by the radiation source 44 in an evaluation module 36.1 '.
  • the evaluation module 36.1 is for this purpose connected to the radiation source 44 and the sensor matrix 32.1 and designed so that from the radiation emitted by the radiation source 44, reflected by a person or an object and detected by the sensor matrix 32.1 radiation forms a matrix that the three-dimensional surface contour corresponds to the detected object or person.
  • This matrix is stored as a characteristic parameter and the person individualizing information in the memory 38 associated with the history signal.
  • the assignment module 36.3 is designed to compare matrices acquired when boarding persons with those matrices that were detected when persons were getting off. The entry and exit direction results from the progress signal.
  • the assignment module 36.3 is also designed for the matrix comparison for transforming matrices, in particular for rotating matrices, in order to be able to take into account the different orientation of persons ascending and descending and the resulting change in the contour images to be compared.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Time Recorders, Dirve Recorders, Access Control (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Eye Examination Apparatus (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Claims (15)

  1. Dispositif de détection (30') pour détecter des personnes (42) ou des objets et leur direction de déplacement, ledit dispositif de détection comprenant
    - un système de capteurs de rayonnement (32.1) pour détecter un rayonnement électromagnétique dont la longueur d'onde est celle d'une lumière visible et/ou invisible et qui provient d'une personne ou d'un objet, et
    - une unité d'exploitation (36') qui est reliée au système de capteurs (32, 34) et qui est conformée pour former un signal d'allure qui correspond à l'allure dans le temps du rayonnement détecté par le système de capteurs de rayonnement, caractérisé en ce que le dispositif de détection comprend en outre
    - des moyens d'individualisation (32.1, 36.1' ; 44) qui sont reliés à l'unité d'exploitation (36') et conformés pour obtenir des informations individualisant un objet ou une personne et qui sont reliés à une mémoire (38) qui est conformée pour mémoriser au moins une portion du signal d'allure et l'information individualisant l'objet ou la personne sous forme d'un paramètre caractéristique associé au signal d'allure,
    et en ce que le dispositif de détection comporte également
    - des moyens de détermination de paramètres (36.1', 44) qui sont reliés à l'unité d'exploitation (36') et conformés pour délivrer un signal supplémentaire,
    et en ce que l'unité d'exploitation (36') est conformée pour former le paramètre caractéristique en fonction du signal supplémentaire,
    - le système de capteurs de rayonnement comportant une matrice de capteurs (32.1),
    - les moyens de détermination de paramètres comportant une source de rayonnement (44) pour un rayonnement détectable par la matrice de capteurs (32.1) ainsi qu'un module d'exploitation (36.1'),
    - et la source de rayonnement ainsi que la matrice de capteurs (32.1) étant reliées au module d'exploitation (36.1')
    - et le module d'exploitation étant conformé pour former à partir du rayonnement émis par la source de rayonnement (44), réfléchi par une personne ou un objet et détecté par la matrice de capteurs (32.1) une matrice, se présentant sous la forme d'un signal supplémentaire, qui détermine le paramètre caractéristique et qui représente une information individualisant une personne respective, la matrice correspondant au contour de surface tridimensionnelle d'un objet détecté ou d'une personne détectée.
  2. Dispositif de détection (30') selon la revendication 1, caractérisé en ce que la source de rayonnement (44) est une source de lumière infrarouge qui délivre de préférence un rayonnement dans le domaine des longueurs d'onde au-dessus de 1400 nm.
  3. Dispositif de détection (30') selon la revendication 1 ou 2, caractérisé en ce que le module d'exploitation (36.1') est relié à la source de rayonnement (44) et au système de capteurs (32.1) et est conformé pour déterminer, sous la forme d'un signal supplémentaire, les temps de propagation d'un signal émis par la source de rayonnement (44), réfléchi par un objet ou une personne et reçu par le système de capteurs (32, 34).
  4. Dispositif de détection (30') selon l'une des revendications 1 à 3, caractérisé en ce que la source de rayonnement (44) est conformé pour émettre un signal codé et en ce que l'unité d'exploitation (36') est conformé pour déterminer la part du signal codé dans le rayonnement reçu par la matrice de capteurs (32.1).
  5. Dispositif de détection (30') selon la revendication 4, caractérisé en ce que le signal codé est un signal périodique et en ce que l'unité d'exploitation (36') est conformé pour déterminer le temps de propagation d'un signal réfléchi en fonction de la relation de phase entre un signal codé reçu par le système de capteurs (32, 34) et un signal codé émis par la source de rayonnement (44).
  6. Dispositif de détection (30') selon l'une des revendications 1 à 5, caractérisé en ce que le système de capteurs (32, 34) comporte au moins deux éléments formant capteurs et en ce que l'unité d'exploitation (36') est conformée pour former au moins deux signaux d'allure pour différents éléments formant capteurs.
  7. Dispositif de détection (30') selon l'une des revendications 1 à 6, caractérisé en ce que l'unité d'exploitation (36') est conformée pour comparer entre elles des portions d'un ou plusieurs signaux d'allure qui ont été reçus avec ou sans décalage temporel.
  8. Dispositif de détection (30') selon la revendication 7, caractérisé en ce que l'unité d'exploitation (36') est conformée pour former un coefficient de corrélation à la suite de la comparaison des portions de signal d'allure.
  9. Dispositif de détection (30') selon la revendication 7 ou 8, caractérisé en ce que l'unité d'exploitation (36') est conformée pour comparer plusieurs fois des portions de signaux provenant de différents éléments formant capteurs de sorte que, à chaque comparaison, les portions de signaux sont décalées temporellement les unes des autres avec différents écarts temporels et en ce qu'un signal de temps de propagation est formé qui correspond au décalage temporel qui donne la plus grande similitude ou la meilleure corrélation des portions de signaux comparées.
  10. Dispositif de détection (30') selon la revendication 9, caractérisé en ce que l'unité d'exploitation (36') est conformée pour former un signal de vitesse à partir du signal de temps de propagation et à partir d'un écartement prescriptible des éléments formant capteurs vers lesquels retournent les portions de signaux utilisées pour former le signal de temps de propagation.
  11. Dispositif de détection (30') selon l'une des revendications 1 à 10, caractérisé en ce que la matrice de capteurs comporte plusieurs éléments formant capteurs qui sont disposés de façon matricielle et en ce que l'unité d'exploitation (36') est conformée pour comparer entre elles, avec un décalage temporel, des portions de signaux qui proviennent de différents éléments formant capteurs et pour déduire un signal de direction de la comparaison des portions de signaux de sorte qu'un vecteur directionnel résulte de la disposition dans l'espace des éléments formant capteurs qui sont associés aux portions de signaux de plus grande similitude.
  12. Dispositif de détection (30') selon l'une des revendications 1 à 11, caractérisé par un capteur supplémentaire qui est conformé pour détecter la couleur de cheveu et délivrer un signal supplémentaire dépendant de la couleur de cheveu.
  13. Dispositif de détection (30') selon l'une des revendications 1 à 11, caractérisé par un capteur supplémentaire qui est conformé en microphone pour détecter un signal acoustique comme par exemple des battements du coeur et délivrer un signal supplémentaire fonction du signal acoustique.
  14. Dispositif de détection (30') selon l'une des revendications 1 à 11, caractérisé par un capteur supplémentaire qui est conformé pour détecter un signal olfactif et délivrer un signal supplémentaire fonction du signal olfactif.
  15. Dispositif de détection (30') selon l'une des revendications 1 à 14 et dispositif de comptage de personnes ou d'objets en mouvement, caractérisé en ce que le dispositif de comptage (40) est relié au dispositif de détection.
EP01954036A 2000-07-13 2001-07-12 Dispositif de detection Expired - Lifetime EP1224632B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10034976A DE10034976B4 (de) 2000-07-13 2000-07-13 Erfassungsvorrichtung zum Erfassen von Personen
DE10034976 2000-07-13
PCT/EP2001/008067 WO2002007106A1 (fr) 2000-07-13 2001-07-12 Dispositif de detection

Publications (2)

Publication Number Publication Date
EP1224632A1 EP1224632A1 (fr) 2002-07-24
EP1224632B1 true EP1224632B1 (fr) 2009-12-16

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US (1) US6774369B2 (fr)
EP (1) EP1224632B1 (fr)
JP (1) JP5064637B2 (fr)
CN (1) CN1243327C (fr)
AT (1) ATE452387T1 (fr)
AU (1) AU2001276401A1 (fr)
BR (1) BR0106974B1 (fr)
DE (2) DE10034976B4 (fr)
ES (1) ES2337232T3 (fr)
MX (1) MXPA02002509A (fr)
RU (1) RU2302659C2 (fr)
WO (1) WO2002007106A1 (fr)

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DE102015202223A1 (de) 2015-02-09 2016-08-11 Iris-Gmbh Infrared & Intelligent Sensors Kontrollsystem
WO2019092277A1 (fr) 2017-11-13 2019-05-16 Iris-Gmbh Infrared & Intelligent Sensors Système de détection

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MXPA02002509A (es) 2004-09-10
ES2337232T3 (es) 2010-04-22
RU2302659C2 (ru) 2007-07-10
BR0106974A (pt) 2002-05-21
JP5064637B2 (ja) 2012-10-31
US6774369B2 (en) 2004-08-10
RU2002109242A (ru) 2004-02-10
EP1224632A1 (fr) 2002-07-24
AU2001276401A1 (en) 2002-01-30
CN1243327C (zh) 2006-02-22
US20020148965A1 (en) 2002-10-17
DE10034976B4 (de) 2011-07-07
JP2004504613A (ja) 2004-02-12
DE10034976A1 (de) 2002-01-31
ATE452387T1 (de) 2010-01-15
DE50115259D1 (de) 2010-01-28
WO2002007106A1 (fr) 2002-01-24
BR0106974B1 (pt) 2012-12-11

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