EP2005396A1 - Dispositif de comptage et de determination du sens de passage d etres vivants - Google Patents
Dispositif de comptage et de determination du sens de passage d etres vivantsInfo
- Publication number
- EP2005396A1 EP2005396A1 EP07711992A EP07711992A EP2005396A1 EP 2005396 A1 EP2005396 A1 EP 2005396A1 EP 07711992 A EP07711992 A EP 07711992A EP 07711992 A EP07711992 A EP 07711992A EP 2005396 A1 EP2005396 A1 EP 2005396A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- passage
- living
- cell
- type
- determining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims abstract description 68
- 230000005855 radiation Effects 0.000 claims description 7
- 241001465754 Metazoa Species 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- 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 present invention relates to a device for counting and determining the direction of passage of living beings. It finds its application in the field of counting and determining the direction of passage of people on roads or in buildings. But it can also apply to counting and determining the direction of passage of animals on the paths.
- Fig. 1 represents a device for determining the direction of passage 100 of a living being 114 of the state of the art, which comprises a pyroelectric cell 102 and a processing unit (not shown).
- the pyroelectric cell 102 is of the type comprising a first detection window 104 and a second detection window 106 arranged, horizontally, next to each other.
- the pyroelectric cell 102 and, in particular, the first detection window 104 and the second detection window 106 are sensitive to infrared radiation, and the pyroelectric cell 102 delivers an electrical signal 200 representative of the passage of the living being 114 in front of the windows. 104 and 106.
- the electrical signal 200 is shown in FIG. 2a.
- the processing unit is connected to the pyroelectric cell 102 and receives the electrical signal 200 thus delivered, and, from the analysis of this electrical signal 200, it determines the direction of the passage of the living being 1 14 in front of the device. determining the direction of passage 100.
- the parallelepipeds 1 10 and 112 of FIG. 1 represent the zones of influence of the detection windows 104 and 106. That is to say that infrared radiation emitted inside the first influence zone 110 is perceived by the first detection window 104 , and infrared radiation emitted inside the second zone of influence 112 is perceived by the second detection window 106.
- the arrow 116 represents the direction of passage of the living being 114.
- the electrical signal 200 represents the electrical signal delivered by the pyroelectric cell 102 during the passage of the living being 1 14 in front of the pyroelectric cell 102.
- the arrow 210a represents the direction of passage of the living being 114. In the example of FIG. 2a, the arrow 210a takes again the direction of the arrow 1 16 of FIG. 1.
- the maximum 202 represents the detection by the first detection window
- the secondary minimum 206 and the secondary maximum 208 are representative of the damping of the signal and depend on the elements constituting the pyroelectric cell 102 and the processing unit.
- the electrical signal 200 is inverted, that is to say that the signal first passes through the minimum 204 representative of the passage of the be alive 1 14 in front of the second detection window 106, then by a maximum 202 representative of the passage of the living being 114 in front of the first detection window 104.
- Such an electrical signal is shown in FIG. 2b.
- the direction of passage of the living being 114 is then represented by the arrow 210b.
- the determination of the direction of passage of the living being 114 in front of the device for determining the direction of passage 100 thus seems to be able to be done by analysis of the electrical signal 200. In fact, this determination is accurate only if the temperature of the living being 114 is greater than that of the device for determining the direction of passage 100. Indeed, if the temperature of the living being 114 is lower than that of the device for determining the direction of passage 100, the curves of Figs. 2a and 2b are reversed and there is then an indeterminacy of the direction of passage of the living being 114.
- such a device for determining the direction of passage 100 does not make it possible to count the number of living beings 114 passing in front of it.
- An object of the present invention is therefore to propose a device for counting and determining the direction of passage of living beings which does not have the drawbacks of the state of the art, by allowing counting of living beings as well as exact determination of the meaning of passage of living beings.
- a device for counting and determining the direction of passage of living beings comprising:
- a first cell adapted to deliver an electrical signal of a first type representative of the passage of a living being in front of said first cell
- the first cell is a pyroelectric sensor of the type comprising a first detection window and a second obscured detection window.
- the determination of the direction of passage of living beings passing in front of said device consists in analyzing the signal level electric of the second type at the moment when the living being leaves the cone of influence of the first detection window of the first cell.
- the first cell and the second pyroelectric cell are one above the other.
- the counting device and determining the direction of passage comprises a cylindrical Fresnel lens disposed in front of each cell.
- FIG. . 1 represents a device for determining the direction of passage of a living being of the state of the art
- FIG. 2a and FIG. 2b represent representative curves of the signal at the output of the pyroelectric cell of the state of the art
- FIG. 3 represents a device for counting and determining the direction of passage of a living being according to the invention
- FIG. 4c and FIG. 4d are the various representative curves of the signal at the output of the second pyroelectric cell of the counting device and determining the direction of passage of a living being according to the invention
- FIG. 5a and FIG. 5b represent the representative curves of the signal at the output of the first cell of the counting device and determining the direction of passage of a living being according to the invention
- Figs. 6a, 6b, 6c and 6d show the combination of the representative curves of the signal at the output of the second pyroelectric cell and the representative curves of the signal at the output of the first cell of the counting device and for determining the direction of passage of a living being according to a particular embodiment of the invention.
- Fig. 3 represents a device for counting and determining the direction of passage 500 of a living being 114 according to the invention.
- the elements identical to the device for determining the direction of passage 100 of the state of the art bear the same references.
- the device for counting and determining the direction of passage 500 comprises:
- a first cell 502 adapted to deliver an electrical signal of a first type representative of the passage of a living being 1 14 in front of the first cell 502;
- a second pyroelectric cell 102 of the type comprising a first detection window 104 and a second detection window 106 and adapted to deliver an electrical signal of a second type representative of the direction of passage of the living being 1 14 in front of the second cell pyroelectric 102;
- a processing unit adapted to determine, on the one hand, the number of living beings passing in front of the device 500 by analysis of the electrical signal of the first type and, on the other hand, the direction of passage of living beings passing through in front of the device 500, by analyzing the electrical signal of the first type and the electrical signal of the second type.
- the first cell 502 is a pyroelectric sensor 502 of the type comprising a first detection window 504 and a second obscured detection window.
- the first cell 502 and the second cell 102 are arranged close to one another, and preferably one above the other.
- the detection windows 104, 106 and 504 are oriented vertically, and the detection windows 104 and 106 of the second cell 102 are arranged horizontally next to each other.
- each cell 102, 502 is only influenced by a single living being 114 passing in front of the device 500, it comprises, for each cell 102 , 502, a cylindrical Fresnel lens 508 disposed in front of each cell 102, 502.
- the focus position of the Fresnel lens 508 is such that the infrared radiation emitted by the living being 14 focus substantially between the two detection windows 104, 106, 504 of the cell 102, 502 considered.
- the cone 506 represents the cone of influence of the first cell 502 and, in particular, of the first detection window 504 of the first cell 502, that is to say that every living being 114 entering this cone 506 is seen by the first cell
- the cone 510 represents the cone of influence of the second cell 102, that is to say that every living being 114 entering this cone 510 is seen by the second cell 102 and, in particular, by the first detection window. 104 and the second detection window 106. To allow better detection of each living being 114 passing device 500, and prevent the passage of a plurality of living beings 114 is analyzed as the passage of a single living being 1 14, the angle of each cone of influence 506, 510 is reduced to the maximum.
- first cell 502 and the second cell 102 are arranged one above the other, makes it possible to vertically align the cone 506 and the cone 510.
- a single living being 1 14 influence simultaneously the first cell 502 and the second cell 102, and when the living being 114 leaves one of the cones
- This particular arrangement also makes it possible to obtain a device for counting and determining the direction of passage 500 compact.
- Fig. 5a and FIG. 5b represent the representative curves of the signal at the output of the first cell 502 of the counting device and determining the direction of passage 500, that is to say the electrical signal of the first type.
- Fig. 5a represents the curve 602 when the outer surfaces of the living being 114 are at a lower temperature than the device 500.
- the curve 602 has a maximum corresponding to the passage of the living being 114 in the cone of influence 506, then a sudden variation (here, a fall) corresponding to the fact that the living being 114 leaves the cone of influence 506, then a return to the initial level.
- Fig. 5b represents the curve 604 when the outer surfaces of the living being 114 are at a temperature higher than that of the device 500.
- the curve 604 has a minimum corresponding to the passage of the living being 114 in the cone of influence 506, then a sudden variation (here, a rise) corresponding to the fact that the living being 114 leaves the cone of influence 506, then a return to the initial level.
- the processing unit can thus, by analyzing the signal received from the first cell 502, count the number of living beings 114 passing in front of the device 500 by incrementing a counter. In fact, to count a living being 114, the processing unit analyzes the electrical signal of the first type and increments the counter when it detects a first variation (rise 602 or descent 604) from the initial level, then a second variation in a direction opposite to the first variation (descent or climb). From the analysis of the signal received from the first cell 502, the processing unit can thus determine whether the temperature of the living being 114 is lower or higher than that of the device 500. The first cell 502 thus plays a role. counter cell and temperature sensor which delivers an electrical signal representative of the temperature difference between the device 500 and the living being 114.
- Figs. 4a, 4b, 4c and 4d are the curves 310a, 310b, 410a and 410b representative of the signal at the output of the second pyroelectric cell 102 of the device for counting and determining the direction of passage of a living being 500, that is, that is to say the electrical signal of the second type.
- These curves 310a, 310b, 410a and 410b have a less sharp profile than the curves 602 and 604 because they come from a combination of the electrical signals coming from the first detection window 104 and the second detection window 106. the second cell 102.
- the area of return to the initial value of each of these curves 310a, 310b, 410a and 410b is disturbed.
- the curve 310a represents the passage of a living being 114 whose temperature is lower than that of the device 500 in a first direction represented by the arrow 300a.
- the curve 310b represents the passage of a living being 114 whose temperature is lower than that of the device 500 in a second direction represented by the arrow 300a.
- the curve 410a represents the passage of a living being 114 whose temperature is greater than that of the device 500 in the first direction represented by the arrow 400a which is identical to the direction of the arrow 300a.
- the curve 410b represents the passage of a living being 1 14 whose temperature is greater than that of the device 500 in the second direction represented by the arrow 400b which is identical to the direction of the arrow 300b.
- the curve 310a has a maximum 302 which corresponds to the passage of the living being 114 in front of the first detection window 104, then a sudden fall and a minimum 304 which corresponds to the passage of the living being 114 in front of the second detection window 106 then a brutal rise which corresponds to the fact that the living being 1 14 leaves the cone of influence 510, then a return to the initial level.
- the curve 310b has an inverted disposition with respect to the curve 310a, that is to say that it has the minimum 304 which corresponds to the passage of the living being 114 in front of the second detection window 106, then a sudden rise and the maximum 302 which corresponds to the passage of the living being 114 in front of the first detection window 104, then a sudden drop which corresponds to the fact that the living being 114 leaves the cone of influence 510, then a return to the initial level .
- the curve 410a has a minimum 402 which corresponds to the passage of the living being 114 in front of the first detection window 104, then a sudden rise and a maximum 404 which corresponds to the passage of the living being 1 14 in front of the second detection window 106, then a sudden fall that corresponds to the fact that the living being
- the curve 410b has an inverted disposition with respect to the curve 410a, that is to say that it has the maximum 404 which corresponds to the passage of the living being 114 in front of the second detection window 106, then a sudden fall and the minimum 402 which corresponds to the passage of the living being 114 in front of the first detection window 104, then a sudden rise which corresponds to the fact that the living being 114 leaves the cone of influence 510, then a return to the initial level .
- the processing unit receives the electrical signal of the first type delivered by the first cell 502 and representative of the passage of the living being 114 in front of the detection window 504.
- the processing unit receives both one of the electrical signals of the first type, represented in Figs. 5a or 5b, and one of the electrical signals of the second type, shown in Figs. 4a, 4b, 4c or 4d.
- the processing unit After analyzing the electrical signal of the first type (FIG.5a, FIG.5b), received from the first cell 502, the processing unit determines whether the temperature of the living being 1 14 is greater or less than that of the device of FIG. counting and determining the direction of passage 500. The analysis of the electrical signal of the second type then makes it possible to determine the direction of passage of the living being 114. In fact, the determination of the temperature of the living being 114 with respect to that of the counting device and determining the direction of passage 500 limits the analysis to two of the four curves shown in Figs. 4a, 4b, 4c and 4d.
- the direction of passage of the living being 14 is given by the arrow 300a of FIG. 4a, or by the arrow 300b of FIG. 4b. If the signal of the second type is similar to the curve of FIG. 4a, that is to say that the curve first passes through the maximum 302 and then the minimum 304, then the direction of passage is given by the arrow 300a. If the signal of the second type is similar to the curve of FIG. 4b, that is to say that the curve first passes through the minimum 304 then the maximum 302, then the direction of passage is given by the arrow 300b.
- the direction of passage of the living being 14 is given by the arrow 400a of FIG. 4c, or by the arrow 400b of FIG. 4d. If the signal of the second type is similar to the curve of FIG. 4c, that is to say that the curve first passes through the minimum 402 and then the maximum 404, then the direction of passage is given by the arrow 400a. If the signal of the second type is similar to the curve of FIG. 4d, that is to say that the curve first passes through the maximum 404 then the minimum 402, then the direction of passage is given by the arrow 400b.
- the knowledge of the temperature of the living being 114, relative to that of the counting device and determining the direction of passage 500, makes it possible to precisely determine the direction of passage of the living being 114.
- the processing unit is adapted to count the number of living beings 114 which are passed in front of the device 500. According to a particular embodiment, the processing unit counts, in a first register , the number of living beings 1 14 that passed in the direction of the arrows 300a and 400a and, in a second register, the number of living beings 1 14 which passed in the direction of the arrows 300b and 400b.
- the first cell 502 and the second cell 102 are disposed one above the other, and the first detection window 504 of the first cell 502 is disposed substantially on the same vertical axis than the first detection window 104 of the second cell 102.
- Fig. 6a shows the passage of a living being 1 14 whose outside temperature is lower than that of the counting device and determining the direction of passage 500, and which passes in front of said device 500 in the direction represented by the arrow 300a.
- the living being 114 thus passes, first, in front of the first detection window 504, 104 of each cell 502, 102, generating a first maximum 702 on the curve 602, and the second maximum 302 on the curve 310a.
- the influence thereof is felt at the second detection window 106 of the second cell 102, represented here by the fall between the maximum 302 and the minimum 304.
- the minimum 304 then represents the moment when the living being 114 influences mainly the second detection window 106 of the second cell 102.
- the living being 1 14 leaves the cone of 506 of the first detection window 504, which generates a rapid variation (here, a fall) of the signal delivered by the first cell 502.
- the curve 310a representing the signal of the second type , is at the level of the minimum 304, that is to say that the living being 114 is in front of the second detection window 106 of the second cell 102.
- the determination of the direction of passage of the living being 114 passing in front of the device 500 can to be determined by the analysis of the level of the electrical signal of the second type, at the moment when the living being 114 leaves the cone of influence 506 of the first detection window 504 of the first cell 502.
- Fig. 6b represents the passage of a living being 114 whose outside temperature is lower than that of the counting device and determining the direction of passage 500, and which passes in front of said device 500 in the direction represented by the arrow 300b.
- Fig. 6c represents the passage of a living being 114 whose outside temperature is greater than that of the counting device and determining the meaning passage 500, and which passes in front of said device 500 in the direction represented by the arrow 400a.
- Fig. 6d represents the passage of a living being 114 whose outside temperature is greater than that of the counting device and determining the direction of passage 500, and which passes in front of said device 500 in the direction represented by the arrow 400b.
- Figs. 6b, 6c and 6d are equivalent to FIG. 6a, and each shows the variations of the electrical signal of the second type which are coordinated with those of the electrical signal of the first type.
- the representative curve of the electrical signal of the second type 310b, 310c and 310d is at the level of the minimum 402 or the maximum 302, 404, that is to say that the living being 114 is in front of the second detection window 106 of the second cell 102 or in front of the first detection window 104 of the second cell 102.
- the determination of the direction of passage of the living being 114 passing in front of the device 500 consists of analyzing the level of the electrical signal of the second type at the moment when the living being 114 leaves the cone of d 506 of the first detection window 504 of the first cell 502.
- the signal of the first type and, also, its representative curve 602 or 604 have a rising or falling edge which is sharp and very short time. This moment represents a remarkable event.
- the analysis of the signal of the second type at this moment makes it possible to determine the direction of passage of the living being 114.
- the different curves may be different depending on the characteristics of the cells used and the characteristics of the electronic components constituting the processing unit. In particular, the directions of variation can be reversed.
- the curves may also be different if the first detection window of the first cell is aligned vertically with the second detection window of the second cell. But there is always a correspondence between the moment when the living being 1 14 no longer influences the first detection window of the first cell and the level of the electric signal of the second type.
- the invention is more particularly described in the case where the first detection window 504 of the first cell 502 is vertical, the invention can also operate in the case where this detection window 504 is oriented horizontally.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
- Seasonings (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Radiation Pyrometers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0602665A FR2899003B1 (fr) | 2006-03-27 | 2006-03-27 | Dispositif de comptage et de determination du sens de passage d'etres vivants |
PCT/EP2007/002558 WO2007110193A1 (fr) | 2006-03-27 | 2007-03-22 | Dispositif de comptage et de determination du sens de passage d’etres vivants |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2005396A1 true EP2005396A1 (fr) | 2008-12-24 |
EP2005396B1 EP2005396B1 (fr) | 2018-07-18 |
Family
ID=37177784
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07711992.3A Active EP2005396B1 (fr) | 2006-03-27 | 2007-03-22 | Dispositif de comptage et de détermination du sens de passage d'êtres vivants |
Country Status (6)
Country | Link |
---|---|
US (1) | US8390461B2 (fr) |
EP (1) | EP2005396B1 (fr) |
AU (1) | AU2007229686B2 (fr) |
CA (1) | CA2647747C (fr) |
FR (1) | FR2899003B1 (fr) |
WO (1) | WO2007110193A1 (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3349190A1 (fr) * | 2017-01-13 | 2018-07-18 | Siemens Schweiz AG | Compteur de personnes |
FR3086782B1 (fr) | 2018-09-27 | 2021-12-03 | Aereco | Dispositif et procede de comptage de personnes |
FR3088460A1 (fr) | 2018-11-09 | 2020-05-15 | Jean-Claude Dubois | Dispositif de capture de frequentation miniaturise |
FR3099591B1 (fr) * | 2019-07-31 | 2022-01-28 | Dubois Jean Claude | Capteur thermique stéréoscopique miniaturisé pour dispositif de comptage automatique |
FR3115379B1 (fr) | 2020-10-16 | 2022-10-21 | Eco Compteur | Dispositif de comptage d’objets |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4000400A (en) * | 1975-04-09 | 1976-12-28 | Elder Clarence L | Bidirectional monitoring and control system |
JPS5563488A (en) * | 1978-11-04 | 1980-05-13 | Tanaka Bijinesu Mashinzu Kk | Automatic descriminating and couting unit for number of entering and exiting personnel |
US4799243A (en) * | 1987-09-01 | 1989-01-17 | Otis Elevator Company | Directional people counting arrangement |
FR2644269B1 (fr) * | 1989-03-07 | 1991-06-14 | Farrugia Andre | Procede et dispositif pour compter a un endroit precis, les passages de personnes, animaux, ou objets divers |
DE4040811A1 (de) * | 1990-12-14 | 1992-07-09 | Iris Gmbh Infrared & Intellige | Richtungsselektive zaehl- und schaltvorrichtung |
JP3233584B2 (ja) * | 1996-09-04 | 2001-11-26 | 松下電器産業株式会社 | 通過人数検知装置 |
FR2809212B1 (fr) * | 2000-05-18 | 2002-08-30 | Inrets | Systeme de comptage d'etres vivants |
-
2006
- 2006-03-27 FR FR0602665A patent/FR2899003B1/fr active Active
-
2007
- 2007-03-22 WO PCT/EP2007/002558 patent/WO2007110193A1/fr active Application Filing
- 2007-03-22 CA CA2647747A patent/CA2647747C/fr active Active
- 2007-03-22 US US12/294,776 patent/US8390461B2/en active Active
- 2007-03-22 EP EP07711992.3A patent/EP2005396B1/fr active Active
- 2007-03-22 AU AU2007229686A patent/AU2007229686B2/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2007110193A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR2899003A1 (fr) | 2007-09-28 |
EP2005396B1 (fr) | 2018-07-18 |
US20100225486A1 (en) | 2010-09-09 |
AU2007229686B2 (en) | 2012-05-24 |
US8390461B2 (en) | 2013-03-05 |
FR2899003B1 (fr) | 2008-09-19 |
CA2647747A1 (fr) | 2007-10-04 |
WO2007110193A1 (fr) | 2007-10-04 |
AU2007229686A1 (en) | 2007-10-04 |
CA2647747C (fr) | 2017-10-10 |
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