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 the movements and displacements of people, in particular in public places.
• the system is based on the continuous analysis of the movements of people's feet on specially equipped floors; these soils are those of stations, terminals, stations, shops, banks, museums, halls, offices, factories, penal establishments, public transport (metros, buses, coaches, trams, railroad cars, ships and aircraft ...) , sensitive places ...
• the system according to the invention applies in particular:
• the invention relates to a system for analyzing the movement of people in public or private places comprising ground equipment fitted with sensors, coupled to a computer in order to detect the presence and monitor the feet of the people on the ground equipment, said system being coupled to means of control and / or toll, characterized in that it comprises separators arranged at the entrances of public places in order to allow the system to discriminate the feet of each person, counting people and locating the feet of people in regular situation or not with regard to the presentation of a badge required by the means of control and tolling or with regard to the payment of a required fee and make it possible to ensure continuous monitoring of the route taken by people in an irregular situation from their entry to their exit on the ground equipment.
• Figure 1 a structure of a flat keyboard implemented in the invention for the production of floor equipment.
• FIG. 2 an embodiment of ground equipment using optical fibers.
• Figure 3 an embodiment of a matrix sensor.
• Figures 4 to 7 an example of a timing diagram showing an evolution of the state of the ground equipment sensors when they are requested by the walking of people.
• the present invention is based on a continuous monitoring, in the measurement areas, of the movements of the feet of people using specially equipped floors. Two equipment processes are possible:
• a carpet incorporates a flat keyboard of very small thickness comprising keys arranged in a matrix manner and the center distance of which is of the order of two centimeters in two dimensions.
• the flat keyboard is sandwiched in the carpet, which is thus made up of: - a hard, wear-resistant top layer 1 to 2 mm thick,
• the last layer, resting on the ground, is also a 2mm thick polyurethane foam.
• the whole carpet having a thickness of about 7 mm.
• the structure of the flat keyboard has the following 7 elements:
• Each of the layers (1 to 6) has a thickness of the order of a hundred microns. All 6 elements having a thickness slightly less than a millimeter.
• the circuits of the flat keyboard of each of the plates come out below via the ribbon cable (7), about 1 mm thick and about ten centimeters wide. The passage of the flounders is done, either in the ground, or under the neighboring plates.
• a simpler version would consist in placing said keyboard under a carpet instead of inserting it in its thickness.
• the carpet with the right composition.
• 2- Another floor equipment is based on the use of a fiber optic network.
• the operating principle of optical fiber is based on the fact that when the fiber is curved, a variation in the transmitted light power is created.
• In the carpet is woven an optical fiber which constitutes the longitudinal mesh by a series of back and forth.
• This carpet can be in the form of plates 1 meter wide and long and a few millimeters thick.
• the sensor mat incorporates the optoelectronic transmitter and receiver.
• the connection between the sensor and the electronics is carried out by a continuous 5 N conductor over a distance which can go up to 50 meters.
• the ground equipment leads to multiplexers and then to a computer of known type, not shown.
• the latter examines the matrix sensor 10 to 20 times per second by scanning the rows and columns (matrix reading); it thus determines the state of the various nodes of the matrix. Indeed the weight of the body exerts a pressure on the ground which requests a certain number of keys of the flat keyboard or of nodes of the optoelectronic sensor. At a given instant, the pressure is applied on a few points or even only a few zones corresponding to each of the feet.
• the number of these points or the extent of these zones depend directly on the sensitivity of the system, which results from the thickness of each of the components of the sensitive mat including the thicknesses of the constituents of the flat keyboard or the diameters of the optical fibers.
• the thicknesses and diameters must be adapted to the different applications of the system and to the role that we want it to play.
• the frequency of reading of the matrix sensor is important (10 to 20 times per second) compared to the speed of sequence of the movements of a human being, so that one can affirm that the observation of the system constitutes a follow-up continuous movement of each foot; between the sampling instant tn and the sampling instant tn + 1, there is a significant number of points whose state has not changed. This at least for one of the two feet of the same person.
• the system constantly and securely tracks each foot, with no possible confusion.
• the different points between tn and tn + 1 make it possible to analyze the evolution of the displacement.
• the numbers of lines solicited by a foot and the numbers of points solicited on each of the lines provide a length, a width and an envelope of the footprints of the shoes; this data is sufficient to identify approximately each of the shoes present, to differentiate them and associate them two by two in order to count travelers. Analysis of this data makes it possible to exclude any parasitic objects such as canes, umbrellas, suitcases or even young children if necessary.
• the proposed system linked to the payment or control system, follows the feet in the measurement area and in particular when the feet pass in front of the payment or control devices and differentiates between those belonging to a person who has performed the required action and those of the person who did not perform the required action and thus placed himself in an irregular situation.
• the objectives of the project lead to distinguish two types of dimensions of public places:
• the proposed system continuously monitors the movements of people throughout the entire area; so that it is able, in addition to the automatic counting of people, to indicate:
• FIG. 3 represents a small part of the matrix sensor at scale Vi: each small point represents a sensor. In reality, the space between two sensors is 2 cm in two dimensions. Horizontally, the lines are numbered from 1 to n; line 1 corresponding to the start of the control zone. In the diagram, only lines 10, 20 and 30 are numbered.
• the example shown, Figures 3 to 7, is that of a traveler entering a public transport vehicle; it appears for the first time on the control zone, at time to, about forty centimeters from the start of the zone; precisely his shoe will solicit sensors on lines 25, 26, 27 and 28.
• the solicited sensors are shown diagrammatically by the large black squares; they are:

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• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Time Recorders, Dirve Recorders, Access Control (AREA)
• Geophysics And Detection Of Objects (AREA)
• Length Measuring Devices By Optical Means (AREA)

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• 2000
  • 2000-11-16 EP EP00983373A patent/EP1337975A1/de not_active Withdrawn
  • 2000-11-16 WO PCT/FR2000/003179 patent/WO2002041262A1/fr not_active Application Discontinuation
  • 2000-11-16 AU AU2001220139A patent/AU2001220139A1/en not_active Abandoned

Non-Patent Citations (2)

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