WO2003091955A1 - Methode de comptage de personnes - Google Patents

Methode de comptage de personnes Download PDF

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Publication number
WO2003091955A1
WO2003091955A1 PCT/AT2003/000108 AT0300108W WO03091955A1 WO 2003091955 A1 WO2003091955 A1 WO 2003091955A1 AT 0300108 W AT0300108 W AT 0300108W WO 03091955 A1 WO03091955 A1 WO 03091955A1
Authority
WO
WIPO (PCT)
Prior art keywords
emg
per
distance measuring
measuring devices
people
Prior art date
Application number
PCT/AT2003/000108
Other languages
German (de)
English (en)
Inventor
Markus Oppenberger
Original Assignee
Markus Oppenberger
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Markus Oppenberger filed Critical Markus Oppenberger
Priority to AU2003223246A priority Critical patent/AU2003223246A1/en
Publication of WO2003091955A1 publication Critical patent/WO2003091955A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/04—Systems determining presence of a target
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME 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
    • G07C9/00—Individual registration on entry or exit

Definitions

  • the invention relates to a method for counting people who pass through a passage in which at least two distance measuring devices are arranged which generate and transmit primary signals, the people being counted on the basis of secondary signals reflected on the people.
  • the invention relates to a device for counting people who pass through a passage, with at least two distance measuring devices which are set up to generate and transmit primary signals, the device being set up to count the people based on secondary signals reflected on the people perform.
  • a device of the type mentioned at the outset has become known, for example, from EP 0 718 806 A2.
  • people who pass through are detected by means of distance measuring devices, each of which emits ultrasound or radar signals whose direction of propagation is inclined to the direction of passage, it being possible for one person to be validly detected by only one single distance measuring device at a time. Based on reflected primary signals, the direction of movement, the instantaneous distance of a person to a distance measuring device, as well as the movement speed of a person can be recorded.
  • a disadvantage of the known embodiment is that the resolution is relatively low due to the design. In this way, two people who pass through a passageway in close proximity can be mistakenly counted as one person. Thus it can happen with the known device that too few people are incorrectly counted.
  • This object is achieved according to the invention with a method of the type mentioned at the beginning in that a person is detected by at least two primary signals generated by different distance measuring devices and the distances of the person to the respective distance measuring devices are determined and recorded, at least one distance profile being determined from recorded distances , from which the number and / or the direction of movement of the people passing through the passage is determined.
  • a preferred embodiment of the invention provides that the distance profile is determined with time and / or location resolution.
  • the horizontal distance between two distance measuring devices is advantageously substantially less than or equal to half the average shoulder width of a person to be detected. In this way, the resolution and thus the accuracy can be further increased.
  • the distance measuring devices are arranged next to one another in the passage at overhead height.
  • the primary signals generated can be ultrasound signals.
  • a device of the type mentioned at the outset is particularly suitable for carrying out the method according to the invention, which is set up to detect a person using at least two primary signals generated by different distance measuring devices and to determine and record the distances of the person to the respective distance measuring devices and at least from recorded distances an ab- To determine the standing profile and from this to determine the number and / or the direction of movement of the people passing through the passage.
  • the device can be set up to determine the distance profile with time and / or location resolution.
  • the horizontal distance between two distance measuring devices is advantageously substantially less than or equal to half the average shoulder width of a person to be detected.
  • the primary signals generated are ultrasound signals
  • the distance measuring devices being designed as ultrasound transducers. Thanks to their compact design, the ultrasonic transducers can be installed almost anywhere and invisibly, are insensitive to dirt, painting, over-sticking and have a high mechanical strength. Furthermore, initial studies on the prototype show that the accuracy is as high as or higher than that of optical systems and there is still great potential for improvements in accuracy.
  • Figure 1 shows an inventive device for counting people with.
  • FIG. 2a shows a passage with a device according to the invention with an entering person
  • FIG. 2b the passage from FIG. 2a;
  • 2c shows a distance profile with determined distances between four people entering and distance measuring devices as a function of time
  • FIG. 3a shows the passage from FIG. 2a with a person leaving
  • 3b shows the passage from FIG. 3a;
  • 3c shows a further distance profile with determined distances between three people coming out and distance measuring devices as a function of time;
  • FIG. 4a shows the passage from FIG. 2a with two people entering
  • 4b shows a distance profile for two people crossing the passage with determined distances as a function of the distance measuring device measuring the respective distance
  • FIG. 5a shows the passage from FIG. 4a with an entering person
  • 5b shows a distance profile for a person crossing the passage with determined distances as a function of the distance measuring device measuring the respective distance.
  • an inventive device VOR for counting people has a plurality of distance measuring devices EMG which are arranged at overhead height in one pass DUR.
  • the passage DUR can be, for example, a door opening or an entry / exit of a vehicle.
  • devices on an optical or acoustic basis can be used as distance measuring devices EMG, but distance measuring devices EMG which are designed as ultrasonic transducers, for example on a capacitive or piezoelectric basis, are preferably used.
  • Ultrasonic transducers have the advantage that they have a relatively low overall height and a small cross-sectional area.
  • the design of the ultrasonic transducers can be customized. Another advantage of ultrasonic transducers is that they have a high resistance to mechanical loads and contamination.
  • a primary signal SIG is usually transmitted continuously or in a time-discrete manner.
  • the distance or the distance between the distance measuring device EMG and an object can then be determined on the basis of a reflected secondary signal RSI.
  • the distances determined by the individual distance measuring devices EMG can be transmitted to an evaluation unit ASW, which, as mentioned below, forms a distance profile that is spatially or spatially resolved from these distances and uses this profile to determine the number and direction of movement of the people.
  • the evaluation unit ASW can be, for example, a suitably programmed microprocessor. According to FIGS.
  • the distance measuring devices EMG can be inclined in relation to a passing direction PAR in which the passage DUR can be crossed by the persons to be detected, so that the direction of propagation of a primary signal SIG generated by a distance measuring device EMG can for example, an ultrasound signal is inclined at an angle to the direction of passage PAR.
  • Passing direction PAR is understood to mean both the entry and the exit direction.
  • the direction of passage PAR thus runs essentially normal to a plane in which the opening of the passage DUR is located.
  • the primary signals SIG generated by the distance measuring devices EMG are reflected on the person PER and reflected secondary signals RSI are received by the distance measuring devices EMG.
  • the instantaneous distance of a person PER to a distance measuring device EMG can be detected on the basis of the reflected and the emitted signals, for example by determining the transit time which a generated primary signal SIG needs to return to the generating distance measuring device EMG as a secondary signal RSI.
  • the signal transit time can be determined, for example, by forming a cross-correlation function between the reflected primary signal and the transmitted primary signal - see, for example, “Signal processing: numerical processing of digital signals, p. 261- p. 262; Schrüfer, Elmar; 2nd edition Kunststoff; Wien, Hanser 1992. "If the signal propagation speed is known, the distance between a person PER and a distance measuring device EMG can easily be determined on the basis of the transit time.
  • a distance profile PRO is formed from the determined distances ABS, wherein the distance profile PRO can be determined in a time and / or location-resolved manner.
  • distance profile PRO is understood to be a function of the distance ABS as a function of the time or the installation location of the distance measuring device EMG.
  • a time-resolved distance profile PRO thus provides information about the direction of movement, number and speed of the people, while a location-resolved distance profile PRO provides very precise information about the number of people PER passing through the passage DUR.
  • the time-resolved distance profile PRO can be used to determine the direction in which the passage DUR is to be passed. As can be seen from FIGS. 2a-2c, the distance ABS to a distance measuring device EMG less in the course of time, which suggests an occurrence with “outward” range finders. Based on the local minima or maxima, the number of people entering can also be determined, in the present case four
  • the time-resolved distance profile PRO shown comes from a single distance measuring device EMG.
  • the distance profiles PRO which are not shown here from the other distance measuring devices EMG, naturally have the same time behavior and differ only in the amount of the distances from the distance profile PRO shown here.
  • the distance ABS of this person PER to a distance measuring device EMG is greater in the case of an exiting person PER, in the present arrangement of the distance measuring devices EMG inclined to the direction of passage PAR.
  • the number of people PER can be deduced from the local maxima or the local mi ima in the time-resolved distance profile PRO.
  • the number of people PER is equal to the number of local maxima or local minima.
  • the direction of movement of a person PER can thus be inferred in the time-resolved distance profile PRO - a larger distance ABS corresponds to an outgoing person PER when the range finders EMG is directed outwards and a smaller distance ABS corresponds to an entering person.
  • the distance measuring devices EMG are arranged such that a person PER is detected with a sufficiently high probability by at least two primary signals SIG.
  • the horizontal distance HAB between two distance measuring devices EMG in a preferred variant of the invention essentially corresponds to a distance that is less than or equal to half the shoulder width of an average person to be recorded PER.
  • the horizontal distance HAB (FIG. 1) between two distance measuring devices EMG is therefore less than or equal to 25 cm. This ensures that both the distance between the head and the shoulder of a person to be detected PER and the distance measuring devices EMG is detected and thus a head-shoulder profile is formed.
  • the arrangement according to the invention also enables the determination of a spatially resolved distance profile PRO, in which the number of people can be determined exactly on the basis of the measured head-shoulder profiles, even if several people pass through the passage at the same time.
  • a spatially resolved distance profile PRO in which the number of people can be determined exactly on the basis of the measured head-shoulder profiles, even if several people pass through the passage at the same time.
  • several distances ABS are recorded simultaneously and, depending on the distance measuring device EMG, the numbers 1, 2, 3, 4, 5 in FIGS. 4b and 5b correspond to the different distance measuring devices in Fig.4a and 5a.
  • a local minimum can correspond to the distance of the head or shoulder of a person PER to a distance measuring device EMG, while a local maximum can originate from the distance breast distance measuring device EMG.
  • the distances ABS can also be located directly in the area of the passage DUR, i.e. "Under" the distance measuring devices EMG, it is not absolutely necessary for this that the distance measuring devices EMG are inclined against a direction of passage PAR.
  • a combination of the time and location-resolved distance profile PRO enables people to be counted PER with a very high level of accuracy.
  • the method according to the invention can achieve an accuracy of over 95% in the counting of people.

Abstract

L'invention concerne une méthode de comptage de personnes, selon laquelle des personnes (PER) passent par un passage (DUR) dans lequel sont disposés au moins deux appareils télémétriques (EMG) qui génèrent et émettent des signaux primaires (SIG), le comptage des personnes étant effectué au moyen de signaux secondaires (RSI) réfléchis sur les personnes (PER). L'invention se caractérise en ce qu'une personne (PER) est détectée par au moins deux signaux primaires (SIG) générés par des appareils télémétriques (EMG) différents et en ce que la distance (ABS) entre la personne (PER) et l'appareil télémétrique (EMG) respectif est déterminée et enregistrée. Les distances (ABS) enregistrées permettent de définir au moins un profil de distance (PRO) à partir duquel le nombre et/ou le sens de déplacement des personnes (PER) passant par le passage sont déterminés.
PCT/AT2003/000108 2002-04-24 2003-04-14 Methode de comptage de personnes WO2003091955A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003223246A AU2003223246A1 (en) 2002-04-24 2003-04-14 Method for counting people

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT6372002 2002-04-24
ATA637/2002 2002-04-24

Publications (1)

Publication Number Publication Date
WO2003091955A1 true WO2003091955A1 (fr) 2003-11-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT2003/000108 WO2003091955A1 (fr) 2002-04-24 2003-04-14 Methode de comptage de personnes

Country Status (2)

Country Link
AU (1) AU2003223246A1 (fr)
WO (1) WO2003091955A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006108916A1 (fr) * 2005-04-11 2006-10-19 Teknovisio Oy Systeme de detection de detecteurs a fonctionnement incorrect dans un systeme de comptage de visiteurs
EP3629307A1 (fr) 2018-09-27 2020-04-01 Aereco Dispositif et procédé de comptage de personnes
CN113165851A (zh) * 2018-12-21 2021-07-23 因温特奥股份公司 对人员运送设备的使用者的检测

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4356387A (en) * 1978-07-21 1982-10-26 Giken Trading Co., Ltd. Apparatus for counting the number of objects passing a given point
EP0437757A2 (fr) * 1990-01-17 1991-07-24 GALLENSCHÜTZ METALLBAU GmbH Dispositif appliqué à la surveillance de passage de personnes dans un corridor
US5187688A (en) * 1991-05-02 1993-02-16 Ncr Corporation Method of counting the number of passers-by
FR2721126A1 (fr) * 1994-06-08 1995-12-15 Brime Sa Dispositif de détection de présence et de sens de passage de mobiles et de personnes en vue du comptage.
EP0718806A2 (fr) * 1994-12-23 1996-06-26 Hans-Theo Wienand Dispositif de comptage de personnes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4356387A (en) * 1978-07-21 1982-10-26 Giken Trading Co., Ltd. Apparatus for counting the number of objects passing a given point
EP0437757A2 (fr) * 1990-01-17 1991-07-24 GALLENSCHÜTZ METALLBAU GmbH Dispositif appliqué à la surveillance de passage de personnes dans un corridor
US5187688A (en) * 1991-05-02 1993-02-16 Ncr Corporation Method of counting the number of passers-by
FR2721126A1 (fr) * 1994-06-08 1995-12-15 Brime Sa Dispositif de détection de présence et de sens de passage de mobiles et de personnes en vue du comptage.
EP0718806A2 (fr) * 1994-12-23 1996-06-26 Hans-Theo Wienand Dispositif de comptage de personnes

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006108916A1 (fr) * 2005-04-11 2006-10-19 Teknovisio Oy Systeme de detection de detecteurs a fonctionnement incorrect dans un systeme de comptage de visiteurs
US8648908B2 (en) 2005-04-11 2014-02-11 Teknovisio Oy System for detecting incorrectly functioning sensors in a visitor counting system
EP3629307A1 (fr) 2018-09-27 2020-04-01 Aereco Dispositif et procédé de comptage de personnes
FR3086782A1 (fr) 2018-09-27 2020-04-03 Aereco Dispositif et procede de comptage de personnes
CN113165851A (zh) * 2018-12-21 2021-07-23 因温特奥股份公司 对人员运送设备的使用者的检测
CN113165851B (zh) * 2018-12-21 2024-04-02 因温特奥股份公司 对人员运送设备的使用者的检测

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Publication number Publication date
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