Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
  • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
  • B60R25/20—Means to switch the anti-theft system on or off
  • B60R25/2027—Means to switch the anti-theft system on or off with data signals passing through the human body
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
  • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
  • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
  • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
• • 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
  • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
  • G07C9/00309—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
  • G07C2009/00365—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks in combination with a wake-up circuit
  • G07C2009/0038—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks in combination with a wake-up circuit whereby the wake-up circuit is situated in the keyless data carrier

Definitions

• the present invention relates to an access control badge, in particular implemented in a vehicle access system, of the type which uses an electric current flow through the body of the badge holder, the current being collected on a suitable sensor, connected to a detection circuit which controls access.
• the badge is designed in the form of a flat object capable of being stored permanently in the pocket of a garment and of being in contact with the body by a conductive plate.
• a conductive plate is arranged on each of the two faces of the product so as to ensure that, whatever the orientation of the badge in the pocket, a conductive face will always be in contact with the body, while the another will be disconnected from any reference potential.
• the badge finally contains: - a power source such as an electric battery, - a register memorizing an identification code, for example associated with the person wearing the badge, - a modulator circuit producing on each of the two faces conductive variable electrical potential which generates between the ground potential and any point on the body of the badge holder a variable electrical current of very low intensity.
• a power source such as an electric battery
• a register memorizing an identification code, for example associated with the person wearing the badge
• - a modulator circuit producing on each of the two faces conductive variable electrical potential which generates between the ground potential and any point on the body of the badge holder a variable electrical current of very low intensity.
• An access control system or more generally any electronic operating system of such a badge is provided so that the current flowing through the body of the badge holder is detected and that the modulated signal which it carries can be demodulated to identify the badge detected.
• the two conductive faces are set to the same electrical potential, no more current can flow through the body and the badge operating system can no longer receive any signal.
• the present invention provides a badge with current flow through the body of the type comprising: - first and second conductive faces, one face of which is intended to come into contact with the body of a badge holder; a modulation circuit of a signal representative of an identification code associated with the badge in an identification system and of which a modulation output terminal is connected to each of the two conductive faces.
• each zone of the first face and the area of the second face likely to be in short-circuit relation with the area of the first face have different conductivities.
• FIG 1 shows a schematic sectional view of a badge producing a current flowing through the body ;
• - Figure 2 shows a schematic view of an electronic system using such a badge;
• - Figures 3a show a short circuit situation and its expression in electrical circuit;
• - Figures 4a to 4c show a particular embodiment of the invention.
• a badge includes a conductive envelope composed of two half-shells 6 and 9 joined and secured by peripheral edges 6 and 8. Such an envelope is made of injection molded plastic. Inside the shell are arranged a support 1 carrying an electrical power source 7, an electronic memory 5 of an identifier code word, a modulator circuit 4 and a connector in electrical relation with two conductive faces 3 and 3'-
• Such a badge is therefore of flat shape and the support can be produced on the basis of a npressure circuit or the like capable of receiving both the aforementioned electronic and electrical components, as well as the electrical interconnection tracks of these components together.
• the envelope is constructed and its two half-shells secured so that the electrical source such as an electric battery can be changed in particular when its charge is exhausted.
• the flat shape of the badge allows, when this badge is placed in a pocket of a garment, such as a shirt pocket or a pants pocket, that the badge is in conductive contact by only one of its conductive faces with the body of the badge holder.
• FIG 2 there is shown such a situation where the badge B is worn in a breast pocket of a shirt and where the wearer places his hand or finger 13 on a conductive plate of a detector 14 of modulated signal 12 which passes through the human body in the form of a current.
• the detection signal is then processed and demodulated in a demodulation and adaptation circuit 15 and the identifier code initially contained in the badge is then available on an operating system of identifier code such as that integrated into a system of of people, or even a control system access to a vehicle.
• FIG 3a there is shown the situation in which the badge holder of Figure 2 carries the left hand 21 in his pocket on the outside of the badge B. By the left arm 20, the two faces of the badge are then at the same electrical potential.
• the electrical model of the badge 1 is composed of a modulated voltage source 23 connected by its two output terminals 24 and 25 to each of the two faces of the modeled badge 22.
• the natural conduction path R has high resistance and the interaction 27 of the finger on the detection plate of the detection system 28 allows the production of a detection signal 29.
• the modulation source 23 is placed in short circuit and can no longer deliver any signal.
• the badge can no longer fulfill its function.
• FIGs 4a and 4b there is shown a front view of the front 31 and a rear view of the back 37 of a badge 30 according to the invention, while in Figure 4c, there is shown the superposition of the two conductive faces, the "back” being seen “through” the front of the badge.
• each conductive face comprises at least one conductive area 33 or 34 and an insulating area or at the very least, less conductive 32 and 35 so.
• the design of these zones is designed in an asymmetric manner so that if an entire face is in electrical contact with a determined electrical potential, bringing a part of the other conductive face into contact does not allow the realization of a short - complete circuit.
• the invention therefore proposes to produce a badge, each zone of the first face and the zone of the second face capable of being in short-circuit relation with the zone of the first face have different conductivities.
• the conductive areas likely to be in short-circuit relationship have two asymmetric geometries to two such as for example two triangles, or two periodic patterns of conductive paths drawn on each face according to opposite periods or offset by a sufficient pitch.
• the conductive areas liable to be in short-circuit relation have different conductivity gradients.
• the conductive zones can be deposited in the form of adhesives or conductive varnishes of variable thicknesses.
• the nature of the conductive products makes it possible to produce the variation in conductivity between two zones.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Theoretical Computer Science (AREA)
• Professional, Industrial, Or Sporting Protective Garments (AREA)
• Devices For Checking Fares Or Tickets At Control Points (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=34307435

Family Applications (1)

Country Status (3)

Families Citing this family (1)

Family Cites Families (2)

• 2003
  • 2003-10-06 FR FR0311654A patent/FR2860624B1/fr not_active Expired - Fee Related
• 2004
  • 2004-09-29 EP EP04766865A patent/EP1673712A2/de not_active Withdrawn
  • 2004-09-29 WO PCT/EP2004/052357 patent/WO2005034015A2/fr active Application Filing

Non-Patent Citations (1)

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