EP3185033B1 - Appareil de balise et unité de lampe ambiante associée - Google Patents

Appareil de balise et unité de lampe ambiante associée Download PDF

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Publication number
EP3185033B1
EP3185033B1 EP15202195.2A EP15202195A EP3185033B1 EP 3185033 B1 EP3185033 B1 EP 3185033B1 EP 15202195 A EP15202195 A EP 15202195A EP 3185033 B1 EP3185033 B1 EP 3185033B1
Authority
EP
European Patent Office
Prior art keywords
room lamp
connector
cable
pair
beacon
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.)
Active
Application number
EP15202195.2A
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German (de)
English (en)
Other versions
EP3185033A1 (fr
Inventor
Pieter Crombez
John Gesquiere
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.)
Televic Healthcare NV
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Televic Healthcare NV
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Publication date
Application filed by Televic Healthcare NV filed Critical Televic Healthcare NV
Priority to EP15202195.2A priority Critical patent/EP3185033B1/fr
Publication of EP3185033A1 publication Critical patent/EP3185033A1/fr
Application granted granted Critical
Publication of EP3185033B1 publication Critical patent/EP3185033B1/fr
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/175—Controlling the light source by remote control
    • H05B47/18—Controlling the light source by remote control via data-bus transmission

Definitions

  • the present invention relates to a wireless localization system for movable objects or persons, such as a system to track the location of patients and/or assets in a facility such as a hospital.
  • the present invention relates in particular to an apparatus combining a beacon function in a room I/O unit, and a remote room lamp unit having ultrasound reproducing means integrated therein.
  • European patent application EP 2 469 298 A1 in the name of the present applicant discloses a method and device for determining a location of a target, using mobile tags and fixed beacons, wherein the target location is estimated from a weighted sum of the indications of the received signal power of at least two received signals.
  • EP 2 889 634 A1 European patent applications EP 2 889 634 A1 , EP 2 889 635 A1 , and EP 2 889 636 A1 , also in the name of the present applicant, present further advances in the field of wireless localization.
  • each patient room of a modern hospital is equipped with a nurse call node or apparatus, which comprises at least an I/O unit adapted to capture a call signal (e.g., a distressed patient pushing an emergency button) and to relay said signal as a traceable call to a centralized assistance dispatching system.
  • the I/O unit may serve as a beacon in a localization system, by emitting ultrasound signals that encode location information, which can be received by tags (worn by patients or attached to equipment) and subsequently relayed as an electromagnetic signal identifying the sender and its location.
  • an apparatus for relaying a call to a centralized dispatching system comprising: a connector for connecting a cable, configured so as to provide power to a room lamp in accordance with a desired room lamp status; and a transmitter module configured to generate an electromagnetic signal in the ultrasonic frequency range, said electromagnetic signal having a beacon message encoded therein; wherein said transmitter module is operatively connected to said connector, so as to allow transmission of said electromagnetic signal over said cable.
  • the present invention is based inter alia on the insight of the inventors that the logic and amplification circuits required to generate the ultrasound beacon signals are present in the I/O units of patient rooms, and need not be fully replicated for every single location that is to be equipped with beacon functionality.
  • the present invention is further based on the insight of the inventors that the I/O unit of a patient room is usually arranged at a location where it has an uninterrupted power supply.
  • the present invention is further based on the insight of the inventors that a typical I/O unit of a patient room is equipped with a connector for a cable that provides power to a room lamp in accordance with the desired room lamp status (on or off), typically located in a corridor, just outside the patient room.
  • the room lamp is used to attract attention from personnel when lit.
  • the inventors have judiciously combined these insights to arrive at a solution where hardware provided inside the I/O unit is used to drive a passive beacon unit outside the patient room, the passive beacon unit being optionally integrated with the room lamp.
  • said cable is a multi-pair cable
  • said connector is a multi-pair connector, configured so as to provide said power to said room lamp over a first pair of said multi-pair cable
  • said transmitter module is operatively connected to said multi-pair connector so as to allow transmission of said electromagnetic signal over a second pair of said multi-pair cable.
  • This embodiment is particularly suited for use with multi-pair structured wiring, such as CAT-3 or CAT-5(e) wiring.
  • said connector is an RJ-45 connector.
  • a system comprising the apparatus as described above, a room lamp having a room lamp housing with a room lamp cable connector, and a cable connected between said connector of said apparatus and said room lamp cable connector; wherein said room lamp housing further comprises means for converting said electromagnetic signal received through said room lamp cable connector into an acoustic ultrasound signal.
  • a room lamp unit for use in the system as described above, said room lamp unit comprising a room lamp housing with a room lamp cable connector and means for converting an electromagnetic signal received through said room lamp cable connector into an acoustic ultrasound signal.
  • Figure 1 schematically illustrates a localization system comprising beacons and tags.
  • a specific application of the system described herein is a wireless nurse call system for use in hospitals and other institutions where patients may move about, possibly without being fully conscious of their own exact location.
  • the system should provide a very accurate determination of the location of the patient or asset to be tracked, both in the spatial dimension (high spatial accuracy) and in the time dimension (low latency tracking), such that adequate responses to tracking events can be deployed immediately and at the right place.
  • Beacons 200 are provided at fixed locations throughout an area in which the location of mobile objects or persons is to be monitored.
  • the beacons may generally be mounted to walls, doors, pillars, and the like. They may have a basic user interface comprising a display and one or more keys; in particular they may be integrated in a terminal that also provides other functions.
  • the beacons emit an identification element modulated onto an ultrasound signal.
  • Ultrasound communication is based on electromechanically induced vibrations that generate propagating longitudinal acoustic waves. As ultrasound waves are, by definition, in a frequency range beyond the audible range for humans, their use is no hindrance to humans present in the monitored area.
  • Ultrasound waves are almost completely blocked by walls (contrary to electromagnetic waves). Ultrasound waves are therefore a suitable signal type to obtain room-level localization accuracy.
  • tags comprise an ultrasound receiver.
  • the tag 100 Upon receiving the beacon identification element encoded in the ultrasound signal, the tag 100 will be aware of its location (in the sense of being able to identify the nearest beacon 200 ) down to room-level accuracy, without any need for triangulation.
  • the tag 100 may further comprise communication means to relay the decoded beacon identification element, along with its own identity, to the central monitoring system.
  • the communication means may include a radio frequency (RF) transmitter adapted to wirelessly communicate the information to a beacon (the same beacon whose identification element was received and/or another beacon within radio range), which is in turn preferably connected to a wired or wireless network 250 that allows it to communicate with a centralized management system 300 .
  • RF radio frequency
  • the identity of the beacon 200 at which the radio signal of the tag 100 is received provides another clue to the location of the tag 100 .
  • This localization step is coarser than the ultrasound-based localization, because the range of an RF transmission with typical properties (e.g., using the legally permitted transmit power in the unlicensed ISM bands at 434 MHz, 2.4 GHz, or 5 GHz, or the SRD860 band) will be longer than that of an ultrasound transmission, and will in particular not significantly be constrained by walls.
  • beacon identities transmitted in the ultrasound signal need only be unique within the set of beacons with overlapping ultrasound communication ranges.
  • beacons with an ultrasound emitter are required in each physical location, such as a room, a sector of a room, a hallway, etc.
  • each beacon requires an ultrasound emitter, electronics to drive the ultrasound emitter, control logic, and a communication interface, the infrastructure costs rise considerable if a large building infrastructure must be covered.
  • the illustrated system 200 is based on an apparatus for relaying a call to a centralized dispatching system, i.e. a terminal or an I/O unit such as those used in a nurse call system of a hospital.
  • the apparatus 200 comprises a connector 232 for connecting a cable, illustrated without loss of generality as an RJ-45 connector for a multi-pair cable such as a CAT-3 or a CAT-5(e) network cable.
  • the connector 232 is configured so as to provide power to a room lamp 430 in accordance with a desired room lamp status; i.e., the apparatus 200 includes logic 240 configure to turn the room lamp 430 on (to attract attention from personnel outside the room) or off in accordance with a predetermined condition.
  • the apparatus 200 further includes a transmitter module 212 , 222 configured to generate an electromagnetic signal in the ultrasonic frequency range, having a beacon message encoded therein.
  • the transmitter module 212 , 222 is operatively connected to the connector 230 , so as to allow transmission of the electromagnetic signal over the cable.
  • the I/O unit also serves as a beacon for the area in which it is located, to which end it may have additional driver circuits 211 , 221 and conversion means 321 within its own housing, preferably configured to emit beacon signals with a different identifier.
  • the transmitter modules are illustrated as comprising a first circuit 211/212 that performs modulation (D/A conversion) and a second circuit 221/222 that provides amplification of the signals.
  • Some or all of the functions described hereinabove as pertaining to these circuits 211 , 212 , 221 , 222 may be implemented separately or in combination in dedicated hardware (e.g., ASIC), configurable hardware (e.g., FPGA), programmable components (e.g., a DSP or general purpose processor with appropriate software), or any combination thereof.
  • the same component(s) may also include other functions.
  • the generated signals are said to be in the ultrasonic frequency range, they are not actually acoustic signals until they reach a conversion means for transforming the electromagnetic waves transmitted over the cable into sound waves - according to the present invention, said conversion means is provided in a separate housing, connected to the I/O unit by means of the cable.
  • the invention it becomes possible to use the hardware provided inside the I/O unit to drive a passive beacon unit outside the patient room, optionally integrated with a room lamp, to increase the coverage of the localization system without any significant increase in the overall cost of the system.
  • the existing cabling can be shared. This is particularly advantageous for extending the coverage of the location system to corridors, where access to the backend is less straightforward and adding stand-alone beacons is expensive.
  • the cable may be a multi-pair cable
  • the connector 232 may be an appropriate multi-pair connector, configured so as to provide power to the room lamp 430 over a first pair of the multi-pair cable, while the transmitter module 212 , 222 is operatively connected to the multi-pair connector 232 so as to allow transmission of the electromagnetic (beacon) signal over a second pair of the multi-pair cable.
  • Other embodiments may use the same pair for transmission of both the power for the room lamp 430 and the electromagnetic (beacon) signal, both components being separated at the receiving end by appropriate filtering means that are well known to the skilled person.
  • the cable may be a single-pair cable and the connector may be a single-pair connector.
  • a system comprises the apparatus 200 as described above, a room lamp 430 having a room lamp housing 400 with a room lamp cable connector 410, and a cable 250 connected between the connector 232 of the apparatus and the room lamp cable connector 410 .
  • the room lamp housing 400 further comprises means 420 for converting said electromagnetic signal received through the room lamp cable connector 410 into an acoustic ultrasound signal, such as a speaker or a piezoelectric transducer.
  • a room lamp unit for use in the system as described above, comprises a room lamp housing 400 with a room lamp cable connector 410 and means 420 for converting an electromagnetic signal received through the room lamp cable connector 410 into an acoustic ultrasound signal.
  • Figure 3 schematically illustrates a building layout in which embodiments of the present invention may be used. It shows three adjacent rooms, connecting to a common corridor.
  • an I/O unit is provided, in particular a nurse call station.
  • the I/O unit includes the necessary hardware to function as a local beacon, i.e. to provide coverage for the location system within the room in which it is mounted.
  • Each I/O unit is connected to a room lamp unit in the corridor, just outside the respective room, by means of appropriate cabling.
  • the room lamp units 400 can act as additional beacons, extending the coverage of the location system to the corridor at very limited additional expense.
  • FIG. 4 illustrates an exemplary design of a room lamp unit 400 according to an embodiment of the present invention.
  • the room lamp housing has a room lamp cable connector (not shown) and means for converting an electromagnetic signal received through the room lamp cable connector into an acoustic ultrasound signal; in the illustrated case, said means are a speaker arranged inside the housing, and the housing is provided with a pattern of openings to allow the acoustic ultrasound signal to propagate outside the housing.

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  • Ultra Sonic Daignosis Equipment (AREA)

Claims (3)

  1. Système conçu pour émettre des messages de balise codés dans des signaux acoustiques ultrasoniques pour localiser des étiquettes qui sont conçues pour répondre à de tels signaux acoustiques ultrasoniques en émettant sans fil un élément d'identification de balise décodé à partir desdits signaux acoustiques ultrasoniques en même temps que leur propre identité en utilisant un émetteur radiofréquence,
    le système comprenant :
    - un appareil (200) comprenant :
    - un connecteur (232) pour connecter un câble (250), configuré afin de fournir de l'énergie à un voyant de chambre (430) selon un état de voyant de chambre souhaité ; et
    - un module émetteur (212, 222) configuré pour produire un signal électromagnétique dans la plage de fréquences ultrasoniques, ledit signal électromagnétique ayant un message de balise codé en son sein ;
    dans lequel ledit module émetteur (212, 222) est connecté de manière opérationnelle audit connecteur (232), afin de permettre l'émission dudit signal électromagnétique sur ledit câble (250) ; et
    - une unité formant voyant de chambre ayant un logement de voyant de chambre (400) avec un connecteur de câble de voyant de chambre (410) ; et
    - un câble (250) connecté entre ledit connecteur (410) dudit appareil (200) et ledit connecteur de câble de voyant de chambre (410) ;
    dans lequel ledit logement de voyant de chambre (400) comprend en outre un moyen (420) conçu pour transformer ledit signal électromagnétique reçu par l'intermédiaire dudit connecteur de câble de voyant de chambre (410) en un signal acoustique ultrasonique.
  2. Système selon la revendication 1, dans lequel ledit câble (250) est un câble multipaire, ledit connecteur (232) est un connecteur multipaire, configuré de façon à fournir ladite énergie audit voyant de chambre (430) sur une première paire dudit câble multipaire (232), et ledit module émetteur (212, 222) est connecté de manière opérationnelle audit connecteur multipaire (232) afin de permettre l'émission dudit signal électromagnétique sur une deuxième paire dudit câble multipaire (250).
  3. Système selon la revendication 2, dans lequel ledit connecteur (232) est un connecteur RJ-45.
EP15202195.2A 2015-12-22 2015-12-22 Appareil de balise et unité de lampe ambiante associée Active EP3185033B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15202195.2A EP3185033B1 (fr) 2015-12-22 2015-12-22 Appareil de balise et unité de lampe ambiante associée

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15202195.2A EP3185033B1 (fr) 2015-12-22 2015-12-22 Appareil de balise et unité de lampe ambiante associée

Publications (2)

Publication Number Publication Date
EP3185033A1 EP3185033A1 (fr) 2017-06-28
EP3185033B1 true EP3185033B1 (fr) 2018-09-26

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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2469298B1 (fr) 2010-12-23 2015-02-18 Televic Healthcare NV Procédé et dispositif permettant de déterminer l'emplacement d'une cible
EP2889636A1 (fr) 2013-12-24 2015-07-01 Televic Healthcare NV Système de localisation
EP2889634B1 (fr) 2013-12-24 2016-12-07 Televic Healthcare NV Système de localisation
EP2889635A1 (fr) 2013-12-24 2015-07-01 Televic Healthcare NV Système de localisation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
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