The present invention concerns a method for identifying a user (1) of a signalling unit (2) when said user (1) performs a physical interaction with a user interface (3) of the signalling unit (2), thereby requesting a signalling unit action (12), wherein said user (1) carries an identification tag (4), the method comprising the steps of: a) transmitting, by the signalling unit, a signalling unit message as variations in a magnetic field (5); b) receiving said signalling unit message by the identification tag (6), and subsequently radiofrequently transmitting a tag response message by the identification tag (7), said tag response message comprising identification information of the user carrying said identification tag, c) receiving, by the signalling unit, said tag response message (8), thereby identifying the user requesting the signalling unit action (9), whereby said transmission is initiated upon said physical interaction of the user (1) at the user interface (3) of the signalling unit (2). The present invention also concerns a system for identifying a user (1) of a signalling unit (2), comprising a signalling unit and an identification tag.
The invention refers to a method of using a tag in a localisation system, the method comprising at said tag operating a magnetic induction signal detection circuit to detect signals, and upon detection of a magnetic induction signal comprising a first identification code: correlating the magnetic induction signal comprising said first identification code to an ultrasound signal comprising a second identification code, received via an ultrasound signal detection circuit. If said correlation reveals an association between said first identification code and said second identification code: a radio frequency announcement signal is transmitted via a radio frequency signal transmitter circuit to signify said association. The invention also refers to a method of using a beacon in said localisation system, as well as the localisation system comprising one or more tags and one or more beacons.
G01S 13/74 - Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
G06K 7/08 - Methods or arrangements for sensing record carriers by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes
G01S 13/88 - Radar or analogous systems, specially adapted for specific applications
G01S 1/72 - Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using ultrasonic, sonic, or infrasonic waves
The invention pertains to a method and system for determining a location of an identification tag (100) in a monitored area. The method comprises using a plurality of beacons (200) to broadcast (2010) beacon messages comprising an identification element relating to the originating beacon; receiving (2020) at a first set of beacons a localization message from an identification tag (100), the tag having received (1010) a beacon message, extracted (1020) the identification element from the received beacon message, and transmitted (1030) information related to the identification element as part of the localization message; performing (3010) a first level of localization of the tag on the basis of characteristics of the respective copies of the localization message received at the first set of beacons; and performing (3020) a second level of localization of the tag on the basis of the information related to the identification element.
G01S 3/02 - Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
G01S 5/02 - Position-fixing by co-ordinating two or more direction or position-line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
G01S 5/18 - Position-fixing by co-ordinating two or more direction or position-line determinations; Position-fixing by co-ordinating two or more distance determinations using ultrasonic, sonic, or infrasonic waves
G01V 15/00 - Tags attached to, or associated with, an object, in order to enable detection of the object
G01S 13/74 - Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
G06Q 10/06 - Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
G01S 1/02 - Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
G01S 1/72 - Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using ultrasonic, sonic, or infrasonic waves
The invention pertains to a method for detecting a tag (100) in an area monitored by one or more beacons (200), the tag (100) comprising a magnetic induction module (121) and a transmitter (140), the method comprising the following steps at said tag: receiving, by means of said magnetic induction module, a first beacon message as variations in a magnetic field, said first beacon message comprising beacon information; extracting said beacon information from said first beacon message; and conditionally on said beacon information, transmitting a localisation message by means of said transmitter (140).
G01S 13/74 - Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
G01S 5/02 - Position-fixing by co-ordinating two or more direction or position-line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
G01V 15/00 - Tags attached to, or associated with, an object, in order to enable detection of the object
G07C 9/00 - Individual registration on entry or exit
G01V 3/10 - Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
G01V 3/12 - Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation operating with electromagnetic waves
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