EP0701230A1 - Anlage zur gleichzeitigen omnidirektionalen Identifizierung - Google Patents

Anlage zur gleichzeitigen omnidirektionalen Identifizierung Download PDF

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Publication number
EP0701230A1
EP0701230A1 EP95480115A EP95480115A EP0701230A1 EP 0701230 A1 EP0701230 A1 EP 0701230A1 EP 95480115 A EP95480115 A EP 95480115A EP 95480115 A EP95480115 A EP 95480115A EP 0701230 A1 EP0701230 A1 EP 0701230A1
Authority
EP
European Patent Office
Prior art keywords
identification
detection signal
entry
badge
transmission
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.)
Withdrawn
Application number
EP95480115A
Other languages
English (en)
French (fr)
Inventor
Jean-Louis Terny
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MU13 INGENIERIE
Original Assignee
MU13 INGENIERIE
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 MU13 INGENIERIE filed Critical MU13 INGENIERIE
Publication of EP0701230A1 publication Critical patent/EP0701230A1/de
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
    • G08B3/1008—Personal calling arrangements or devices, i.e. paging systems
    • G08B3/1016—Personal calling arrangements or devices, i.e. paging systems using wireless transmission
    • G08B3/1083—Pager locating systems
    • 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
    • G07C9/20—Individual registration on entry or exit involving the use of a pass
    • G07C9/28—Individual registration on entry or exit involving the use of a pass the pass enabling tracking or indicating presence

Definitions

  • the invention relates to a simultaneous omnidirectional identification installation.
  • Detection and identification systems are intended in particular for health establishments or accommodation for the disabled or elderly.
  • the installation follows or manages the entrances / exits of the establishment, and in particular makes it possible to ensure a fugue control, or simply a function of memorizing the passages.
  • the systems for detecting and identifying people which are currently known generally comprise a set of detectors arranged at each exit from the monitored area, these detectors being connected to a central management unit.
  • Each member of the establishment carries an individual identification badge, generally worn on the wrist in the form of a bracelet.
  • the badge receives the detection signal emitted by the detector, and sends it a person identification signal.
  • Known devices operate on the principle of induction.
  • the detector is produced by a winding emitting low frequency energy. This energy is collected at the time of passage by a receiver winding of the wristband badge, which triggers the emission of radio identification intended for a receiving antenna of the detector.
  • the disadvantages of these systems are essentially linked to the inductive principle.
  • the energy collected by the badge is a function of the square of the distance between two planar windings.
  • the detection range is therefore very limited, of the order of a meter in practice.
  • it varies according to the relative orientation of the windings: if, when the badge passes at the level of the detector, the plane of the secondary winding is perpendicular to the plane of the primary winding, the energy collected will be zero.
  • the energy collected is a function of the time spent in the range of the detector.
  • the energy collected will be too weak to trigger the emission of identification.
  • the known devices require the installation of the detector winding generally embedded in the ground, at each crossing point.
  • microwave identification systems are also known. These systems are often used for counting or object detection, and in particular for electronic toll collection on motorways. The performance of these systems is linked to the unidirectional nature of the detection waves emitted, and therefore to the exact positioning of the identification badges in the detection beam. The technique is unsuited to the problems of detecting people or objects of varying sizes in movement, for which the position, orientation and angle of passage of the badge are different each time.
  • the object of the invention is to eliminate these drawbacks by providing a device for omnidirectional simultaneous identification allowing effective surveillance of a determined space, for example a reception establishment for people, or a warehouse for objects.
  • This object is achieved by the installation according to the invention for monitoring or managing the inputs and outputs in a coverage area having one or more entry / exit areas, constituted by a central unit connected to detectors arranged in each entry / exit zone, and by identification badges comprising an individual code assigned to each of the people or objects monitored, each detector comprising a primary transmitter of a detection signal and an identifying receiver, each badge comprising a receiver primary for reception of the detection signal when passing through an entry / exit zone and a secondary transmitter for the transmission of an identification signal which is received by the receiver identifying the detector and transmitted to the management center, characterized by causes the transmission of the detection signal to be a VHF or UHF transmission.
  • the transmission of the detection signal takes place in a frequency chosen in the band from 30 MHz to 1 GHz, more precisely in the band from 200 to 500 MHz.
  • each badge includes the primary receiver for receiving the detection signal, connected to a microcontroller containing an individual code, itself connected to the secondary transmitter for transmitting the identification signal.
  • the emission of the identification signal can be offset from the reception of the detection signal by a delay time specific to each badge.
  • the code can be a digital code, the delay time then being proportional to the value of the code.
  • the waves transmitted in the VHF-UHF band are omni-directional waves. Detection is thus not linked to the orientation of the detector relative to the badge.
  • the detection distance is much greater, of the order of ten meters instead of the meter.
  • the transmission speed of the detection signal is higher than in the case of an induction transmission. Detection is therefore ensured regardless of the speed of passage through the detection zone.
  • VHF-UHF The technology related to VHF-UHF can be implemented at low costs in terms of performance. In particular, the installation can be carried out without major structural work.
  • the operating frequencies are chosen from the frequencies authorized by the administration. This choice is such that they are not likely to disturb nearby electronic devices.
  • FIG. 1 represents an example of an omnidirectional simultaneous identification installation according to the invention, for surveillance, in a determined space which will be called coverage area, having passage areas or entry / exit areas such as 1, the entry / exit movements of a population or group of people or objects known as followed persons or followed objects.
  • This installation consists, on the one hand, of a central management unit 2, provided with electronic and computer means 3 suitable for the management of identifications, storage means, disks, floppy disks, printers, signaling means 4, and / or mechanical means of action, for example the selective blocking of the doors, the lowering of barriers, in the case of a runaway installation.
  • a central management unit 2 provided with electronic and computer means 3 suitable for the management of identifications, storage means, disks, floppy disks, printers, signaling means 4, and / or mechanical means of action, for example the selective blocking of the doors, the lowering of barriers, in the case of a runaway installation.
  • This central management unit 2 is connected to one or more detectors such as 5 placed at the level of each of the entry / exit zones 1, door, gate, passage, corridor, etc.
  • Each person or object monitored is provided with an identifying badge 6.
  • the badges 6 are capable of being detected by the detector 5 of each entry / exit zone, so that the management center 2 can follow in an identified manner the entries and exits of all the people or objects monitored.
  • each detector 5 comprises a means of connection 7 with the management center 2, for example a transmitter-transmitter of radio waves 8, the center 2 being connected to means for receiving the signals transmitted by the set of detectors, for example one or more receiving antennas 9.
  • the detector 5 comprises a primary transmitter 10 of a signal detection 11, or primary signal, covering the entry / exit zone.
  • the detector 5 also comprises an identifier receiver 12 or secondary receiver.
  • the transmitter 10, the receiver 12 and the connection means 7 are connected to a controller 13, known per se, which manages the operation of the detector.
  • the detection signal 11 is transmitted in a frequency situated in the VHF or UHF band.
  • the primary emission will be in the band from 30 MHz to 1 GHZ, and optimally between 200 and 600 MHz.
  • the emission of the detection signal in the VHF-UHF domain makes it possible to obtain optimal efficiency, with on the one hand, an omnidirectionality of the emission, and on the other hand, an absence of excessive parasitic effects due in particular to reflections on nearby obstacles.
  • the omnidirectional nature of the broadcast thus guarantees the detection of any person or object entering the entry / exit area.
  • the transmission of the omnidirectional detection signal 11 by the transmitter 10 can be permanent or intermittent (pulsed) in the entry / exit zone. However, preferably, the emission of the detection signal 11 is triggered by the activation of a sensor 14 connected to the detector 5.
  • This sensor can for example be a photoelectric cell.
  • This sensor In order to determine the direction of passage (entry or exit), it is possible to provide two cells arranged one next to the other and emitting two parallel rays.
  • the senor 14 consists of two cells 15 and 16 emitting a transverse light ray, one arranged on the entry side of the zone and the other on the exit side of the zone.
  • the badges 6 comprise a microcontroller 17 connected on the one hand to a receiver 18, and on the other hand to a transmitter 19.
  • the receiver 18 is a VHF or UHF receiver operating continuously and detecting the exact modulation emitted by the detectors 5.
  • the microcontroller 17 is adjusted so that activation of the receiver 18 results in the emission by the transmitter 19 of a signal identification 20 intended to be received by the receiver 12 of the detector.
  • the microcontroller 17 contains an individual code assigned to each badge 6, for example a digital code. This code is contained in the identification signal sent by the transmitter 19.
  • the energy for the standby of the primary receiver and the emission of the identifying signal by the secondary transmitter is supplied by a battery 21 connected to the microcontroller 17.
  • badges are traditionally designed in the form of a bracelet worn on the wrist or ankle. Alternatively, it could be a clip, pin, keychain, etc.
  • the badge may take the form of an electronic label, for example self-adhesive, magnetic, clip-on, with suction cup.
  • the operation of the installation is as follows.
  • a person or an object provided with a badge 6 is present in an entry / exit zone 1 in which there is a detector 5, it causes the activation of the sensor 14, for example, according to the direction of passage, one of cells 15 or 16, which then triggers the transmission of the detection signal 11 by the transmitter 10 of the detector 5.
  • This detection signal 11 is received by the receiver 18 of the badge 6, and causes the transmission by the transmitter 19 of the secondary signal or identification signal 20.
  • This signal which contains the individual code of the badge, is received at its turn by the receiver 12 of the detector 5 and transmitted by the link means 7 to the management center 2, as well as the information corresponding to the identification of the entry / exit zone concerned and to the direction of passage.
  • each badge 6 can be adjusted in such a way that the time of emission of the secondary identification signal 20 is shifted in time by a certain duration, called response time, relative to the time of reception of the detection signal 12 emitted by the detector 5, this response time being specific to each of the individual badges.
  • the code of each badge 6 can be a digital code, the response time of the badge being proportional to the value of this code.
  • these are micro-shifts of the order by example of the hundredth of a second.
  • the installation according to the invention allows the simultaneous detection and identification of several people or objects crossing the same entry / exit zone.
  • each badge emits an identification signal after a specific response time.
  • the detector 5 receives the time-shifted identification signals and can therefore identify each of the badges. This feature allows a much finer adaptation of the system response at this entry / exit area.
  • the installation can be carried out without the installation of wired systems. It can be changed very simply and quickly. You can add, remove, modify the location of the detectors.
  • the detectors can be installed without structural work, including the sensors near the entry / exit zones. It is no longer necessary to provide built-in or buried elements as in the prior art. Each detector may appear as a terminal placed in the vicinity of the entry / exit area to be covered.
  • the invention has been described in detail in an application corresponding more particularly to surveillance and detection in a people accommodation establishment. It is understood that various other applications are envisaged, in particular for monitoring and detecting objects. In general, the invention can be implemented for monitoring and detecting a population of people or objects in a determined territory, limited by entry / exit zones.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electromagnetism (AREA)
  • Time Recorders, Dirve Recorders, Access Control (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Geophysics And Detection Of Objects (AREA)
EP95480115A 1994-08-26 1995-08-23 Anlage zur gleichzeitigen omnidirektionalen Identifizierung Withdrawn EP0701230A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9410508 1994-08-26
FR9410508A FR2725294B1 (fr) 1994-08-26 1994-08-26 Installation d'identification simultanee omnidirectionnelle

Publications (1)

Publication Number Publication Date
EP0701230A1 true EP0701230A1 (de) 1996-03-13

Family

ID=9466624

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95480115A Withdrawn EP0701230A1 (de) 1994-08-26 1995-08-23 Anlage zur gleichzeitigen omnidirektionalen Identifizierung

Country Status (2)

Country Link
EP (1) EP0701230A1 (de)
FR (1) FR2725294B1 (de)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3739329A (en) * 1971-05-24 1973-06-12 Recognition Devices Electronic system for locating
US3750167A (en) * 1971-07-22 1973-07-31 Gen Dynamics Corp Postal tracking system
US3805227A (en) * 1972-10-03 1974-04-16 Rcds Enterprises Inc Electronic tracking locating system using multiple frequency, modulated, and time delayed ultrasonic signals
EP0056726A1 (de) * 1981-01-21 1982-07-28 Australian Meat and Live-Stock Corporation Identifizierung von Tieren aus der Ferne
US5021794A (en) * 1989-08-15 1991-06-04 Lawrence Robert A Personal emergency locator system
FR2668613A1 (fr) 1990-10-29 1992-04-30 Msei Systeme de detection et d'identification d'objets ou de personnes.
FR2673743A1 (fr) * 1991-03-04 1992-09-11 Ragagnin Moreno Procede et dispositif de controle de presence d'individus dans un site.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3739329A (en) * 1971-05-24 1973-06-12 Recognition Devices Electronic system for locating
US3750167A (en) * 1971-07-22 1973-07-31 Gen Dynamics Corp Postal tracking system
US3805227A (en) * 1972-10-03 1974-04-16 Rcds Enterprises Inc Electronic tracking locating system using multiple frequency, modulated, and time delayed ultrasonic signals
EP0056726A1 (de) * 1981-01-21 1982-07-28 Australian Meat and Live-Stock Corporation Identifizierung von Tieren aus der Ferne
US5021794A (en) * 1989-08-15 1991-06-04 Lawrence Robert A Personal emergency locator system
FR2668613A1 (fr) 1990-10-29 1992-04-30 Msei Systeme de detection et d'identification d'objets ou de personnes.
FR2673743A1 (fr) * 1991-03-04 1992-09-11 Ragagnin Moreno Procede et dispositif de controle de presence d'individus dans un site.

Also Published As

Publication number Publication date
FR2725294B1 (fr) 1996-12-27
FR2725294A1 (fr) 1996-04-05

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