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WO2007081259A1 - Méthode et dispositif de communication par un réseau de distribution électrique - Google Patents

Méthode et dispositif de communication par un réseau de distribution électrique Download PDF

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Publication number
WO2007081259A1
WO2007081259A1 PCT/SE2006/001483 SE2006001483W WO2007081259A1 WO 2007081259 A1 WO2007081259 A1 WO 2007081259A1 SE 2006001483 W SE2006001483 W SE 2006001483W WO 2007081259 A1 WO2007081259 A1 WO 2007081259A1
Authority
WO
WIPO (PCT)
Prior art keywords
network
accordance
network nodes
electricity distribution
central unit
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.)
Ceased
Application number
PCT/SE2006/001483
Other languages
English (en)
Inventor
Nils-Gunnar Holmer
Stig Wiinberg
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.)
Region Skane
Original Assignee
Region Skane
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 Region Skane filed Critical Region Skane
Priority to EP06835892A priority Critical patent/EP1977560A1/fr
Publication of WO2007081259A1 publication Critical patent/WO2007081259A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/06—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using power transmission lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5429—Applications for powerline communications
    • H04B2203/5441—Wireless systems or telephone
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5429—Applications for powerline communications
    • H04B2203/5445—Local network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5429—Applications for powerline communications
    • H04B2203/5454—Adapter and plugs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them

Definitions

  • the invention relates to a method and a device for communication via an electricity distribution network, the power supply network.
  • the cables of the electricity distribution network are used for transmitting signals superimposed on the network voltage.
  • PLC Power Line Communication
  • Narrow-band PLC operates at relatively low frequencies (3 to 148.5 kHz), usually with a bandwidth of the order of 5 kbit/s. This technique is used primarily for control and monitoring in distributed systems.
  • Access PLC is a system for high-speed communication via the power supply network and operates in the frequency range 1.6 to 30 MHz, which allows communication with bandwidths of 4 to 20 Mbit/s.
  • a plurality of commercial but mutually incompatible systems of this type is available.
  • In-house PLC is a system for creating a local data network via the power supply network in a building or property.
  • a plurality of commercial systems is available and compatible under the common designation HomePlug.
  • a current standard caters for capacity of 14 Mbit/s and a future standard for up to 200 Mbit/s.
  • a system for monitoring a digital security camera is referred to and described in US2004/0155757.
  • the camera and other home electronic appli- ances are connected to one another and to a main unit via an existing power supply network.
  • a modem (modulator/demodulator) connects the appliances and the unit to the power supply network.
  • the systems available today are based on independent units communicating with one another in small networks or small groups.
  • the organisa- tion and configuration of large networks with reliable monitoring and control involves problems.
  • a limited area means an establishment comprising one or more buildings. Two or more establishments may cooperate and thereby constitute a limited area.
  • Another object of the invention is to provide systems for handling and conveying messages and various alarm functions.
  • the network nodes may be provided with suitable means for wireless data communication, e.g. systems based on Bluetooth®, standards within IEEE 802.11 , IEEE 802.16 (WiMax), DECT (Digital European Cordless Telephone), IrDA (Infrared Data Association) and the like.
  • Various types of communicators serve as terminals in the system.
  • a central unit with archive function controls, monitors and conveys communication between terminals and network nodes.
  • the electricity distribution network is preferably disposed in an establishment comprising a building or a plurality of adjoining buildings.
  • the power supply network is usually of a standard type in different environments and usually remains unchanged even if the function of a location or room changes.
  • Various filters and attenuators are used for limiting communication to a desired area.
  • Various limited areas may be connected together to form larger composite units with two or more central units.
  • the various central units may then cooperate with one another and serve as redundant units.
  • Each individual network node is provided with a unique identity allocated by, or at least known to, the central unit.
  • ADSL Asymmetric Digital Subscriber Line
  • the network nodes may be connected at ordinary wall sockets, in which case they are preferably fastened, e.g. by the screws normally used for fitting the wall socket. Fastening prevents the network nodes being moved unintentionally or erroneously. It is also possible to connect the network nodes permanently to the electricity distribution network. This is done, for example, in roof installations and in installations of a more permanent nature. As an alternative, possibly in combination with the foregoing, the network nodes may be built into electrically connected equipment.
  • Each room in the building or buildings is preferably provided with at least one network node.
  • Patients in the room have access to or carry an alarm transmitter or alarm unit wirelessly connected to the network node.
  • the alarm transmitter and the alarm unit are associated with a particular patient and it is possible for the central unit to determine both from which patient and from which room an alarm comes.
  • Other technical equipment items connected to network nodes are also uniquely identified.
  • Staff in the building or buildings have access to or carry handheld units of various kinds which may comprise means making it possible to determine their position.
  • the handheld units are in wireless communication with the network nodes. Communication between patients' alarm transmitters and staffs handheld units can be set up via the central unit so that alarms can be received and responded to by appropriate staff. It is also possible for various types of answering signals to be sent from the handheld units and thereby not only confirm reception of an alarm signal but also send some kind of answer to the patient's alarm transmitter, e.g. that staff are on the way.
  • alarm transmitters and handheld units may be provided with simple or more complex indicators and displays.
  • patients, staff and connected technical appliances exchange qualified information in various forms with the central unit.
  • the central unit may be divided into a number of physi- cal units, both in different buildings and in different establishments.
  • FIG. 1 is a schematic general view of an installation in accordance with the invention
  • Fig. 2 is a schematic view of part of an installation in accordance with the invention.
  • Fig. 3 depicts schematically a version of a network node used in Fig. 1 .
  • Fig. 4 depicts schematically a version of an appliance with a built-in network node.
  • Fig. 1 depicts an example of an installation executed in accordance with the invention.
  • a physical network links together and makes communication possible between electronic nodes and network units.
  • the physical network takes the form of a conventional electricity distribution network 10, usu- ally with operating voltage 230 V or 115 V a.c, called the power supply network.
  • the installation is confined to an establishment which may comprise two or more buildings. Area limitation is provided by filters or attenuators 36 which may be of a conventional kind.
  • a plurality of network nodes 11 comprising electrical and electronic components for modulation and demodulation of data signals on the alternating voltage of the power supply network are connected to the electricity distribution network 10.
  • the network nodes make data communication possible between various forms of data equipment, e.g. computers, printers and digital monitoring cameras.
  • a number of mobile units specially adapted to hospital environments, hotel environments and other similar environments are also connected to the network nodes 11.
  • Such adapted units include a monitoring unit 12, an alarm transmitter 13, an handheld unit 14 and an alarm indicator 15. Further units with similar functions may also fall within the scope of the invention.
  • a very simple version of a network node 11 may comprise a remote- controlied electrical circuit-breaker, which is a commercially available and inexpensive product.
  • a free-standing, preferably handheld, unit communicates wirelessly with a mains-connected unit.
  • electrical appliances connected to the mains-connected unit it is possible for electrical appliances connected to the mains-connected unit to be activated or, in the particular application, for an alarm signal or the like to be sent via the electricity distribution network.
  • the network node 11 is provided with a push-button for transmitting an alarm signal or the like.
  • the network node may also be provided with a lamp or some other indicator which indicates that the button has been pressed.
  • the network nodes 11 are preferably provided with means for wireless data communication. Those means may be of a conventional kind and will not be further described here. In more extensive systems in accordance with the invention, the network nodes 11 may be provided with further functions and a greater degree of independence. In the version depicted in Fig. 1 , the central unit 16 is wire-connected to a network node 20 without wireless func- tion, but within the scope of the invention a network node 11 with wireless function may also be used for this purpose. The central unit 16 with associated ancillary equipment and the network node 20 are disposed in a first location 21 demarcated by a broken line in Fig. 1.
  • the third location 23 is divided into a number of rooms equipped with various combinations of network nodes and indicators.
  • the rooms are demarcated by chain-dotted lines. All the locations form part of the establishment covered by the installation in accordance with the invention.
  • the network nodes 11 may be connected to the electricity distribution network 10 in various ways.
  • the network node is connected via an ordinary wall socket or lamp socket.
  • the network node in such a version is fastened mechanically in the socket to make it difficult to remove and relocate.
  • a permanent wired connection to the electricity distribution net- work 10 is used.
  • the wired connection may be in the ceiling or the wall.
  • Information about the network node's identity and where it is situated is stored in the central unit 16. All communications that take place via the network node can therefore be located with high precision in terms of the building and room from which they originate, including the particular part of the room. The position of units connected via network nodes can thus be located.
  • the network nodes 11 communicate continuously with the control unit. If communication cannot be maintained, an alarm is given. Alarms may be initiated either by the network node or by the central unit 16 or a unit associated with it.
  • a room 24 is provided with an installation, typical of a hospital environment, in accordance with the invention.
  • a first network node 11 with wireless function is connected to the power supply network 10.
  • a second network node 20 without wireless function connects a control board 25 to the power supply network 10.
  • the control board 25 is connected to various alarm units on or close to a patient in the room 24.
  • a handheld alarm transmitter 13 with various buttons 26 for various alarm levels is accessible to the patient, who can him/herself call for help from staff.
  • the alarm transmitter 13 is connected wirelessly to a local network node 11
  • the alarm unit 27 is connected wirelessly to the control board 25, which is itself connected to the power supply network via a network node 20 without wireless function.
  • the respective alarm unit is connected to the power supply network in a suitable manner by wire or wirelessly.
  • the monitoring unit 12 and the control board 25 are designed for wired or wireless two-way communication and can in one version serve as subcen- tre or slave centre to the central unit 16.
  • the alarm transmitter 13 and the alarm unit 27 are respectively allocated a specific alarm identity. Other units used in the system in accordance with the invention may be allocated a unique technical identity in a comparable manner. Information about identity accompanies the transmission of alarms and other data so that correct association with the bearer of the alarm transmitter 13 or the alarm unit can be made by the central unit or another comparable unit.
  • the alarm transmitter 13 and the alarm unit 27 may re- spectively be provided with means for measurement of horizontal and vertical position and with an accelerometer to indicate, for example, that the bearer is falling.
  • An alarm indicator 15 is disposed in or directly adjacent to the room 24.
  • the alarm indicator 15 is also connected wirelessly to a network node 11 and thereby to the power supply network and other units.
  • the alarm indicator 15 may be composite with, or in some other way connected by wire to, the network node 11.
  • An alarm state in the room 24 will activate the alarm indicator 15 so that staff outside the room 24, e.g. in a corridor, are made aware that an alarm has been generated and in which room.
  • the alarm indicator 15 may be activated either by equipment in the room 24, e.g. the control board or a handheld alarm transmitter 13, or via the central unit 16, which is provided with information about the alarm state via the power supply network.
  • the alarm may also be transmitted to personal handheld units 14 or receiver communicators, e.g.
  • a well- developed handheld unit or handheld computer can serve as a personal sub- centre in the system. To this end, it will also comprise memory means for storing vital data concerning the patients for whom the bearer of the handheld unit is responsible. By position determination, the handheld unit can guide responsible staff to the appropriate location.
  • the receiver communicator may also be of a simpler design, e.g. in the form of a minicall unit 29 or a similar unit.
  • the receiver communicator is provided with a display for reading alarms and other information, and with function buttons for confirming receipt of information and being able to send at least simple messages to the central unit 16 and other units.
  • the central unit 16 is important for the functioning of the system in accordance with the invention.
  • the central unit stores information about staff, techniques and desired patient-specific information concerning medical condition, status and medicines.
  • Each patient admitted is associated with a spe- cific alarm unit 26 and/or a specific alarm transmitter 13, whereby alarm signals transmitted to the central unit 16 via a network node 11 and the electricity distribution network are automatically related to the correct patient.
  • Alarms and other communications from and to the patient pass via a network node 11 whereby the current geographical location of the alarm unit or some other communicating unit is known.
  • the central unit 16 may be divided into a number of separate computer units.
  • the computer units may be disposed in different spaces and different buildings. Communication between the computer units may be via the electricity distribution network in the same manner as described above for other technical equipment items, but also via conventional communication channels, e.g. wired data networks and wireless data communication. With advantage, conventional communication technology is used if the computer units are disposed in different establishments with separate electricity distribution networks.
  • the storage unit 17 connected to the central unit 16 stores the data required for handling in real time various applications within the scope of the invention. Settings, messages and other activities are saved to cater for traceability.
  • the storage unit 17 comprises movable storage media for security copying and long-time storage. Information may also be moved or copied to patients' other records after their care has ended.
  • Wireless communication between the network nodes 11 and handheld alarm units and other mobile units takes place on an available carrier frequency, e.g. 868 MHz, using with advantage available protocols and communication systems.
  • an available carrier frequency e.g. 868 MHz
  • two or more carrier frequencies may be used simultaneously. It thus also becomes possible to determine continuously the current position of alarm transmitters 13, alarm units 26 attached to patients, handheld units 14 and other wirelessly connected units.
  • a comparable division into two or more carrier frequencies may also be done in order to separate different groups on the same floor of a building.
  • the system in accordance with the invention affords a number of possibilities for locating the position of units.
  • mobile units may be provided with special means for locating their position, e.g. by giro.
  • a giro position-determining means may continuously emit signals which indicate the position of the mobile unit.
  • the meas- urement principle is based on inertia navigation with measurement of the movement of an object. Position location by giro may with advantage be used in configurations with widely spaced network nodes.
  • Position location may also be facilitated by limiting the transmitter power of mobile units and hence their range.
  • the transmitter power may be set so that communication between mobile units and network nodes is limited to a settable distance, e.g. within a room or floor of a building.
  • Simple mobile units e.g. alarm transmitters 13, handheld units 14 and minicall units 29, usually transmit only a few types of signals to one or possibly a few receivers, and also communicate information about their own posi- tion or the like.
  • Alarm transmitters 13 may be provided with indicators, e.g. lamps or LEDs, to provide the user with information that an alarm has been received or that staff called are on the way.
  • the alarm transmitters 13 and other mobile units are provided with a display to make it possible to convey more complex information, e.g. instructions about medication or route directions for taking a patient to a desired location.
  • the hand- held units 14 and minicall units 29 intended for different staff categories may also be provided with a display and a set of buttons to enable various forms of communication.
  • the communication facility provided by using the electricity distribution network as a communication medium can also be used for more conventional conveying of information.
  • the computer 34 and the intercom telephones 35 are provided with either built-in or external network nodes and communicate with other comparable units via the network nodes and the electricity distribution network.
  • the computer 34 and the intercom tele- phones 35 may be designed for both wireless and wired communication via the network nodes.
  • An installation designed in accordance with the invention may also comprise devices for accumulating information and/or controlling commonly used mechanical equipment.
  • Fig. 1 this is illustrated by an electric motor 37 connected to the central unit 16 via a network node 20 without wireless function.
  • the electric motor 37 may form part of a hoist, a fan or some form of ventilation equipment.
  • the portion depicted in Fig. 2 of an installation in accordance with the invention comprises an alarm indicator 15 and a route indicator 30 fitted in a corridor ceiling.
  • the control unit can, through knowing where the network node 11 and staff are, indicate the way to the room and the network node. This may be done by the activation of indicators, e.g. lamps, LEDs or graphic displays 31 , on route indicators 30 along an appropriate route for certain staff.
  • An alarm in- dicator 15 adjacent to the room in which the alarm has been activated will also light up, as depicted in Fig. 2.
  • the version of a network node 11 depicted in Fig. 3 is intended for insertion in a conventional wall socket like an ordinary plug. Wall sockets and plugs occur in different versions in different countries and the network nodes 11 are adapted to the particular situation.
  • Two pins 32 protruding from a rear side of the network node fit into corresponding apertures in the wall socket.
  • the network node 11 is intended to be fastened in a wall socket screwed permanently to a wall. This is catered for by the network node being provided with holes 33 running through it in a configuration corresponding to that of the wall socket's fastening screws (not de- picted). This version makes it possible to fasten the network node 11 in and to the wall socket.
  • the network node also comprises an antenna 34.
  • the antenna 34 is dimensioned for the frequency range used in wireless communication between network nodes and mobile units. In some versions the antenna is built in.
  • Network nodes directly and permanently connected to the electricity distribution network are designed as appropriate for this type of connection. It is also possible for electrical appliances used in buildings covered by an installation in accordance with the invention to be provided with a built-in network node. Upon connection of such an appliance to the electricity distri- bution network, the network node automatically becomes available for communication with other network nodes and the central unit.
  • the appliance 39 may be a dialyser, a respirator, a supervisory monitor or some similar device, with or without medical function.
  • the network node 38 comprises a mains module 40 corresponding technically to a network node as described above with electronics for transmission of data signals on electricity distribution networks.
  • the mains module 40 in Fig. 4 is connected to the distribution network 10. This connection also provides the appliance 39 with power supply.
  • the built-in network node 38 also comprises a data capture module 41 and a control module 42 which are connected to an electronic module 43 be- longing to the appliance 39.
  • the data capture module 41 is fed with and stores information concerning patients, care staff who handle the appliance and technical care concerning the treatment in which the appliance is used, alarm limits and current operating data of the appliance.
  • the operating data stored may include chemical levels, battery voltage, operating times, temperatures and similar data.
  • the control module 42 handles certain functions of the appliance, e.g. log-in of operating staff, approval of connection to patient, medical remote control for stopping ongoing treatment and approving treatment by defibrillator and similar special equipment.
  • the control module 42 is also designed to cater for various appliance settings required for treatment by the appliance and for altering technical settings and calibrating units in the appliance. Other functions of the control unit 42 are within the area of communication, e.g. for showing the current status of the appliance and other information and recording control commands and transmitting them to the electronic module 43.
  • the electronic module 43 comprises substantially functions of conven- tional kinds for the control and monitoring of appliances. Communication with external control and monitoring equipment, e.g. a central unit 16, is via the mains module 40.
  • the user and/or staff can use an input and output unit 44, which may for example comprise a display and a set of buttons, for controlling and monitoring the appliance in a more conventional manner.
  • Com- munication via the electricity distribution network takes place at a number of levels.
  • the primary information carrier is any of the PLC, ADSL or other comparable technologies available on the market. These techniques carry an alarm and control protocol adapted to the invention for exchange of information between the various functions in the system.
  • the protocol is a dynamic protocol which adapts the amount of information to what is the most optimum at the time. This means that each actual amount of information is preceded by opening information and ended by closing information. This takes place at various levels and applies to each individual information module and out to cover the whole protocol.
  • the protocol is composed of various information modules. There are modules for activity, identity, info code, security code, routine, patient information, staff information, technical information, data and spare modules to cater for future needs. For a very time-critical and acute alarm, the protocol comprises few but vital amounts of information about activity (type of alarm) and identity concerning the patient, equipment item, time and geography to which the alarm refers and its own unique info key. The central unit has to use the minimised amount of information to decide about receiving the alarm and its further handling.
  • the information module is provided with data with an info key enabling direct con- trol of information from transmitter to receiver. This may for example apply to transmission of speech for intercom telephony, ECG or some other current amount of information.
  • the protocol may be made long and complete with all the information modules and large volumes of information.
  • Activity indicates the type of alarm to which the protocol refers, e.g. acute alarm, service alarm, attention alarm etc. and variants of the alarm types heart, toilet visit, imminent end of paper and so on.
  • Identity denotes transmitter, selected receiver, geographical location, point in time, technical ID and the like.
  • Info key creates an identity for the amount of data and the information process created.
  • Safety key locks and encrypts the protocol.
  • the safety key also serves as a certificate for obtaining permission for the protocol to pass fire- walls and enter the various system units, and permission to amend stored information.
  • the subtlety of the safety key is that all executable codes must have an approved key to obtain time in a processor which is to execute the code. This security concept permeates all the system components that use computer programmes for their function, and covers both technical units and, where necessary, particular or all protocols.
  • Routine indicates how information is to be handled and what is expected from the recipient.
  • Patient information is concentrated vital information about the patient.
  • Data is the actual amount of data in cases where it is too large to fall within the above.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Measuring And Recording Apparatus For Diagnosis (AREA)

Abstract

Méthode et dispositif de communication par un réseau de distribution électrique (10) dans un établissement, des signaux de données étant transmis par des nœuds de réseau connectés au réseau de distribution électrique. Les informations concernant l’emplacement physique des nœuds de réseau (11) et une identité unique pour chaque nœud de réseau (11) sont stockées dans une unité de stockage (17) d’une unité centrale (16) qui est connectée aux nœuds de réseau (11 ; 20). Certains nœuds de réseau (11) sont raccordés sans fil à des unités mobiles (13 ; 14 ; 15 ; 27 ; 28 ; 29) et la communication entre les unités mobiles (13 ; 14 ; 15 ; 27 ; 28 ; 29) se réalise par des nœuds de réseau (11) et le réseau de distribution électrique (10). Des informations échangées entre les unités mobiles (13 ; 14 ; 15 ; 27 ; 28 ; 29) sont enregistrées et stockées dans l’unité centrale (16). L’unité centrale (16) est conçue pour véhiculer les informations d’adressage nécessaires vers les nœuds de réseau et comprend une unité de stockage pour enregistrer et stocker de telles informations de communication échangées entre les nœuds de réseau. Un nœud de réseau (38) intégré dans un instrument (39) communique, commande et surveille par le biais des unités (40-44) une section d’équipement connectée à un réseau de distribution électrique.
PCT/SE2006/001483 2006-01-13 2006-12-22 Méthode et dispositif de communication par un réseau de distribution électrique Ceased WO2007081259A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06835892A EP1977560A1 (fr) 2006-01-13 2006-12-22 Méthode et dispositif de communication par un réseau de distribution électrique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0600054-1 2006-01-13
SE0600054A SE535835C2 (sv) 2006-01-13 2006-01-13 Metod och anordning för kommunikation över elektriskt distributionsnät

Publications (1)

Publication Number Publication Date
WO2007081259A1 true WO2007081259A1 (fr) 2007-07-19

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PCT/SE2006/001483 Ceased WO2007081259A1 (fr) 2006-01-13 2006-12-22 Méthode et dispositif de communication par un réseau de distribution électrique

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EP (1) EP1977560A1 (fr)
SE (1) SE535835C2 (fr)
WO (1) WO2007081259A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10165376A (ja) * 1996-12-10 1998-06-23 Keakomu:Kk ナースコールシステム
US6130896A (en) * 1997-10-20 2000-10-10 Intel Corporation Wireless LAN segments with point coordination
WO2001085085A2 (fr) * 2000-05-05 2001-11-15 Hill-Rom Services, Inc. Commande a distance pour lit d'hopital
WO2002009462A1 (fr) * 2000-07-26 2002-01-31 Swisscom Mobile Ag Procede permettant d'etablir une station de base dans un reseau de telephonie mobile et de relier cette station de base au reseau de telephonie mobile
US20040125870A1 (en) * 2002-12-17 2004-07-01 Kenichi Yamazaki Interconnecting device with built-in power line communication modem
JP2005346587A (ja) * 2004-06-04 2005-12-15 Ts Photon:Kk 非常灯電力線を用いたｒｆｉｄタグによる位置情報管理システム

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10165376A (ja) * 1996-12-10 1998-06-23 Keakomu:Kk ナースコールシステム
US6130896A (en) * 1997-10-20 2000-10-10 Intel Corporation Wireless LAN segments with point coordination
WO2001085085A2 (fr) * 2000-05-05 2001-11-15 Hill-Rom Services, Inc. Commande a distance pour lit d'hopital
WO2002009462A1 (fr) * 2000-07-26 2002-01-31 Swisscom Mobile Ag Procede permettant d'etablir une station de base dans un reseau de telephonie mobile et de relier cette station de base au reseau de telephonie mobile
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