WO2000052658A1 - Reseau et systeme de securite - Google Patents

Reseau et systeme de securite Download PDF

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Publication number
WO2000052658A1
WO2000052658A1 PCT/IL2000/000108 IL0000108W WO0052658A1 WO 2000052658 A1 WO2000052658 A1 WO 2000052658A1 IL 0000108 W IL0000108 W IL 0000108W WO 0052658 A1 WO0052658 A1 WO 0052658A1
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WO
WIPO (PCT)
Prior art keywords
unit
home
units
mobile
portable
Prior art date
Application number
PCT/IL2000/000108
Other languages
English (en)
Inventor
Daniel Aljadeff
Original Assignee
Commtrack Ltd.
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 Commtrack Ltd. filed Critical Commtrack Ltd.
Priority to AU26868/00A priority Critical patent/AU2686800A/en
Publication of WO2000052658A1 publication Critical patent/WO2000052658A1/fr

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
    • G08B21/0263—System arrangements wherein the object is to detect the direction in which child or item is located
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
    • G08B21/0227—System arrangements with a plurality of child units
    • 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
    • G08B25/001—Alarm cancelling procedures or alarm forwarding decisions, e.g. based on absence of alarm confirmation
    • 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
    • G08B25/007—Details of data content structure of message packets; data protocols
    • 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
    • G08B25/009—Signalling of the alarm condition to a substation whose identity is signalled to a central station, e.g. relaying alarm signals in order to extend communication range
    • 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
    • G08B25/016—Personal emergency signalling and security systems
    • 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
    • G08B25/10—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 wireless transmission systems

Definitions

  • the present invention relates to a security network for the monitoring, tracking and searching of moving and stationary persons, animals and objects. More specifically, the invention relates to a wireless security network that uses home-based transceivers to provide monitoring, two-way messaging and location functions of individuals, animals or objects, in an area determined by the presence of said network transceivers.
  • Security systems which provide monitoring functions to wireless portable units associated to it, are well-known in the art. These systems are normally based on home fixed alarm means, which include a receiver able to receive emergency messages from said portable units (e.g. panic button). Emergency messages received from said portable units are sent to a monitoring center via telephone lines or other wireless methods (U.S. Patent No. 5,455,569). The operation area of those mobile units is limited to the area covered by the home receiver associated to it (tens to hundred feet).
  • the prior art also deals with wireless networks based on special infrastructure, which provide several security functions as emergency messages, location, etc. Many examples are available
  • cellular systems e.g. E911
  • GPS units combined with wireless networks
  • SMR specialized mobile radio
  • multi-lateration systems etc. Examples of such systems are found in U.S. Patent Nos. 5,802,454, 5,767,788, 5,742,233, 5,729,196, 5,673,305, 5,652,570,
  • home includes any type of building, e.g., public buildings, office buildings, etc..
  • transceiver having ranging means is normally associated with one or more mobile/portable units to provide security functions (e.g. emergency messages, monitoring, location, etc.).
  • security functions e.g. emergency messages, monitoring, location, etc.
  • home transceivers having ranging means may communicate with mobile/portable units not associated to them, to provide said system functions (e.g. emergency messages, monitoring,
  • mobile/portable units e.g. panic buttons
  • mobile/portable units are not limited to communicate only with those home transceivers units, which are associated to them.
  • transceivers having ranging means may calculate their absolute position based on distances
  • transceivers based on distances measured from said home transceivers and optionally transfer said position data to a center or other destination for absolute location calculation or other use,
  • said absolute location being sent back to said mobile/portable unit and being used to locate
  • said mobile/portable unit in a digitized map and/or perform self monitoring functions by said
  • unidirectional or bi-directional range measurements performed by one of said license-free home transceivers having ranging means, to said mobile/portable unit is used by other neighbor said license-free home transceivers having ranging means and being able to receive said range measurement messages to obtain data which may be used to calculate their respective distance to said mobile/portable unit without measuring the distance to said mobile/portable unit.
  • license-free home transceiver include means to accommodate changes in the network topology and environment conditions.
  • the invention provides a security network and system that uses a plurality of license-free home-based units having ranging means and optionally direction finding means to provide supervision, tracking, location and messaging capabilities, of mobile or fixed units in an area
  • the network consists of a plurality of fixed, license-free remote transceivers units, optionally
  • license-free wireless transceivers said unit or units installed in central alarm stations or
  • concentration points and optionally having ranging and direction finding means, at least one
  • said center being able to communicate with at least one home
  • concentrators maintaining between them two-way wireless communication, and a plurality of portable and/or mobile units, said units including a transceiver being able to communicate
  • range measurement means fixed or mobile/portable units
  • range measurement means fixed or mobile/portable units
  • some units may preferably include one or more directional antenna means
  • the remote transceiver or said alarm unit attached to it may also be connected to a PSTN or other wired line, in that way each said transceiver unit being able to
  • Each said remote transceiver normally communicates with said mobile units associated to it
  • said one or more home are preferably associated to said transceiver during the unit setup.
  • said one or more home are preferably associated to said transceiver during the unit setup.
  • transceivers having ranging means may communicate with mobile/portable units not
  • mobile/portable units e.g. with panic button means
  • the network according to the present invention enables a communication center or transceiver
  • transceivers having range
  • mobile/portable units are able to calculate their absolute or relative
  • the mobile/portable unit itself may be used to show said mobile/portable unit position on a digitized map displayed in said unit or in an attached display or in an attached terminal unit having said display, said location data also used by said mobile/portable unit to perform different
  • Transceiver units having direction finding means in addition to range measurement means,
  • said directional antenna may use said directional antenna to provide better location information (e.g. only two
  • transceiver units are available to locate a mobile/portable unit) and to improve the network
  • the network based on license-free home-based transceivers having range measurement and
  • optional direction finding means grows (i.e., the coverage area is expanded) and improves
  • the network uses dynamic configuration and routing which is basically not dependent on any single node to perform any of said system functions.
  • the communication center facility may be located anywhere inside or outside the network
  • All the system preferably operates in the ISM band, which is used in the U.S.A. and worldwide for unlicensed spread spectrum communication.
  • the system units make use of several technologies in order to achieve improved performance in noisy and/or problematic communication environments.
  • the units communicate with one
  • said units may use diversity antennae to improve even more the
  • the communication center or similar security center may at any time, send information to any other entity.
  • Fig. 1 shows a remote transceiver (SPU) and its interface to a home alarm unit and to mobile/portable units, according to one preferred embodiment ofthe invention
  • Fig. 2 schematically shows a remote transceiver block diagram (SPU) according to one preferred embodiment ofthe invention
  • Fig. 3 schematically shows a security network, including remote transceivers, concentrator units and a center, according to a preferred embodiment ofthe invention
  • Fig. 4 illustrates the timing of a simple range measurement operation, performed by a supervision unit (SPU), according to a preferred embodiment ofthe invention
  • Fig. 5 illustrates the timing of a simple range measurement operation, performed by a supervision unit (SPU), and a second supervision unit listening to messages being transmitted, according to a preferred embodiment ofthe invention
  • Fig. 6 illustrates the timing of a double range measurement operation, performed by a supervision unit (SPU), according to a preferred embodiment ofthe invention
  • Fig. 7 illustrates the timing of a double range measurement operation, performed by a supervision unit (SPU), and a second supervision unit listening to messages being transmitted, according to a preferred embodiment ofthe invention
  • Fig. 8 illustrates a security network showing the distances between the network
  • the mobile/portable unit which is carried by a person, animal or attached to any
  • a suitable unit may be, e.g., a unit ofthe type described in the aforementioned International Patent Application PCT/IL98/00376, of the same applicant hereof, the description of which is entirely incorporated herein by reference.
  • Such unit is preferably a monitored/searched unit - MSU or a monitoring and searching unit - SRU, both units
  • said SRU including
  • both MSU and SRU may be implemented in several configurations for different requirements.
  • the supervision unit - SPU which is preferably a fixed transceiver unit having
  • transceiver installed in a home or in any other place, and
  • Said SPU unit preferably
  • the concentrator unit - CTU which is an optional unit, used to concentrate
  • This unit is similar to a remote transceiver, and may include several
  • a CTU may be replaced by an SPU.
  • a specific MSU communicates with a supervisor unit (SPU) associated to
  • This SPU may periodically monitor one or more of its associated MSU's, receive messages from it (e.g. emergency messages), etc.
  • the SPU may be installed in a home and
  • the home alarm unit may contact a commumcation
  • the SPU may contact directly a communication center through said PSTN line or through
  • any other wired or wireless communication link which may be available, said wired or
  • said SPU serves a complete building, said building comprising two or more customer homes,
  • said SPU being attached to a group of home alarm units and said SPU being preferably
  • the SPU is attached or integrated in other electronic units, said
  • units being a personal computer, a cordless telephone, a TN set, etc.
  • antenna 4 to transmit and receive signals to/from mobile/portable units 6, which are within the
  • mobile/portable unit 6 is spread spectrum communication and preferably working in one
  • This communication link is preferably used for ranging purposes, direction finding, data messaging
  • the SPU is preferably fixed installed and in a preferred embodiment, connected to a home
  • the home alarm unit may contact a center through a PSTN
  • SPU 3 may also send and/or receive data to/from other units in the network, as other SPU 9,
  • the SPU consists of two main blocks: A transmitter/receiver unit 12
  • the antenna or antennae may be internal or external, said antenna or antennae connected directly to said transmitter/receiver or mounted on a wall, etc. and connected to said transmitter/receiver via a
  • the receiver unit receives RF radio signal and converts them to digital signals subsequently processed by the Data processing and Control unit 14. Signals generated by the
  • the data processing and control unit includes digital logic means for range measurement, said logic means including correlating means, peak detection means and time measurement means, a microprocessing means, which
  • processing and Control unit 14 in conjunction with said transmitter/receiver unit 12 and a directional antenna or array of antennae may be used to measure direction of a received
  • I/O ports Part of these I/O ports are preferably connected to a display means 16, used to display messages, alarms, controls, etc., an audio means used for any kind of voice
  • microprocessing means may exchange data with other electronic units through an external parallel or serial interface 17 (e.g. RS-232, etc.).
  • serial interface 17 e.g. RS-232, etc.
  • each home transceiver having ranging means is normally associated with one or more mobile/portable units to provide security functions (e.g. emergency messages, monitoring, location, etc.).
  • the present invention provides a network and system in which one or more home transceivers having ranging means may communicate with mobile/portable units not associated to them, to provide said system functions (e.g. emergency messages, monitoring, location, etc.).
  • mobile/portable units e.g. panic buttons
  • mobile/portable units are not limited to communicate only with said home transceivers units associated to them, said mobile/portable units being able to operate almost anywhere within the network area and being not limited by the communication range between said mobile/portable unit and said SPU.
  • Fig. 3 illustrates a preferred embodiment ofthe security network comprising a communication center 23, concentrator units 22, and supervision units 21, said supervision units having the capability to contact the commumcation center directly 25 (e.g. through a telephone line) and/or through a wireless link 24 or through other units of the network 26.
  • the concentrator units 22, said concentrator units being optional units may communicate directly with the communication center 23 via wired lines 27 or wireless lines 28, and with on or more of said supervision units 21.
  • a network as described in Fig. 3, allows an MSU (in other cases it may be an SRU), being said MSU out-of-the-range of its associated supervision unit, to be serviced by other supervision units, being said supervision units located in homes or other places, near to that said MSU.
  • An emergency signal from such MSU unit is preferably routed to said communication center through a telephone line, the wireless network or a combination of
  • SRU replacing the MSU and many other communication systems may be used or combined to transfer messages to the center.
  • the supervision unit which is in contact with said MSU in emergency, will preferably transmit both MSU and SPU identification codes enabling the security service provider to
  • the SPU can also measure the distance to the MSU and optionally the azimuth thus enabling said SPU to provide said communication center with a
  • an emergency signal is preferably
  • a plurality of supervision units may receive the emergency signal, said
  • said supervision units preferably include an algorithm that controls the response timing
  • said emergency message is preferably
  • the MSU message When the MSU message reaches the communication center, it is processed and a response message is sent back to said MSU, said response message being sent preferably to
  • the supervision units perform perimeter monitoring to their associated MSU's.
  • Each MSU preferably communicates periodically with its associated SPU and the distance between them is then
  • a notification is preferably sent to a communication center or to any other programmed
  • supervision units having direction finding capabilities may combine azimuth and range measurement for their perimeter monitoring functions, said
  • perimeter pre-programmed limits being a combination of both azimuth and
  • perimeter monitoring may be programmed to fit different customer requirements, including allowed distances, allowed azimuths, MSU
  • an SPU will monitor and alert according to its
  • the monitoring process may start automatically or manually after on or more MSU's are logged in the SPU, said SPU using monitoring parameters, said parameters preferably set-up by the user for each MSU or group of MSU's, or use the system default values.
  • the parameters that may be defined, but not limited to, are:
  • the SPU preferably adapts its operating parameters according to the unit being momtored, to the communication channel quality and other parameters.
  • an SPU is able to perform, but not limited to, an average of 10-100 distance measures per second (600-6000 measures per minute). It has the possibility to change the interval time between two consecutive measures according to the application, channel load, distance from the MSU
  • monitoring interval may be adapted to the distance, while far units are monitored more frequently than close units), azimuth to the MSU, user setup, etc .
  • the monitoring interval period of a specific MSU will preferably be in the range of 10-1200 seconds.
  • the network units make use of several technologies in order to achieve improved performance in noisy and/or problematic communication environments. Said units communicate each to other using spread spectrum techniques, said techniques using direct sequence coding to take advantage of the processing gain and ranging capabilities inherent in this coding technique. In addition, said units use other and/or additional means to improve the performance in multipath conditions, strong fading conditions, to overcome nulls and narrow band interference sources that may be present in the working band, said means being use of diversity antennae to improve even more the receiving conditions in cases of fading or nulls, directional antenna, frequency hopping techniques, etc.
  • the associated SPU When it is necessary to communicate with a mobile/portable unit, be it an MSU or SRU, to locate said mobile/portable unit, the associated SPU is preferably first accessed. This SPU will try to communicate with said MSU by sending to it messages, said messages being periodically sent or according to any other algorithm.
  • a specific SPU may fail to communicate with said mobile/portable unit, because said unit is out of the communication range or due to interference in the communication link. In such a case, it is possible to extend the searching area by said SPU asking from neighbor SPU's, to perform a "search for me" operation.
  • Each of the contacted neighbors SPU's can initiate an acquisition process, said acquisition process being intended for first communicate with said mobile/portable unit.
  • the associated SPU will be notified including the measured distance from the MSU and optionally the measured azimuth.
  • this process may be further expanded to cover a large area within the network, but preferably, it is performed only by the direct or 2-level neighbors. Due to the natural cellular characteristic of the network, said limited operation will not significantly increase the load on the network. Transferring messages between said mobile/portable unit and its associated SPU, through the neighbor SPU, is relatively simple and does not require complicate routing algorithms. As may be apparent to the skilled person, in this manner, it is possible to expand the effective coverage area of a specific supervision unit and improve its success probability to communicate with a mobile/portable unit, said unit being an MSU or SRU according to the invention.
  • the selection ofthe appropriate neighbors to perform an acquisition may be done dynamically or based on previously stored information.
  • the portable SRU unit is able to perform a manual search of
  • searching process may be enhanced and carried out in different ways:
  • the network can assist to speed-up the searching process, said searching process started from the closest SPU that had
  • a combined operation of a portable searcher (SRU) and at least two supervision unit enables to calculate the absolute location of said SRU.
  • said location being calculated by using measured distances to said MSU, location of
  • the communication center may be periodically updated about the
  • said updating process including an updated location of the searched MSU, calculated speed, etc.
  • a message preferably originating from a communication center or a concentrator unit is sent to most or all the SPU's in a wide
  • said center or said concentrator units requesting supervision units to perform an acquisition process with a specific MSU, said MSU being searched within a part or the whole
  • At least three SPU's may also be combined with CTU's having range measurement
  • a mobile/portable unit said mobile/portable unit being an MSU or SRU, by intersecting the circles drawn from the measured or calculated distance to that mobile/portable unit, the SPU being in the center of a circle where the measured distance
  • a location algorithm calculates the expected position of the mobile/portable unit based on said distances and by taking in account other
  • These parameters preferably include signal strength, distance, SPU location, frequency offset, azimuth, etc.
  • Fig. 4 describes the basic timing when measuring the distance between an SPU and a
  • mobile/portable unit said mobile/portable being an MSU or SRU (for the sake of simplicity
  • a supervision unit SPU#1 31 sends a message Tm 33 to an MSU 32, said transmitted message being received 35 at the MSU after a propagation delay Td 34.
  • An additional short time, used to switch from receive to transmit mode Ts 36, is
  • the distance is calculated by the SPU, by measuring the time from the beginning of Tm 33 to
  • Ts 36 is fixed and known.
  • distance measuring uses preferably a filter, said filter being software or hardware
  • Fig. 5 describes the timing of a bi-directional range measurement, which is similar to the unidirectional measurement described in Fig. 4.
  • a supervision unit SPU#1 61 sends a message Tm 63 to an MSU 62, said transmitted message being received 65 at the MSU after a propagation delay Td 64.
  • An additional time, used to switch from receive to transmit mode Ts 66, is elapsed before the MSU transmits back a message Tm 67 which is synchronized to the received message 65, said transmitted message 67 being received 69 at the SPU#1 after a propagation delay Td 68, said propagation delay being normally very close to the previous propagation delay 64.
  • SPU#1 61 transmits a second message 71, after a switching time Ts 70. This second message is received 73 by the MSU after a propagation delay of Td 72.
  • Both SPU#1 and mobile/portable units said mobile/portable unit being an MSU or an SRU, have information to calculate the distance between them.
  • said distance measuring process from several SPU's may be significantly improved.
  • the communication protocol used to measure distances allows to calculate the distance from several SPU's to a mobile/portable unit, said mobile/portable unit being an MSU or SRU, by only listening to the distance measuring process between one of said SPU's and said mobile/portable unit. In that way, mobile/portable unit location from multiple SPU's is performed by a single range measurement, thus the overhead of the network significantly reduced and the distance is measured from all SPU's simultaneously thus minimizing the error
  • FIG. 6 there is shown a case where SPU#1 41 performs a range measurement
  • a supervision unit SPU#1 41 sends a message Tm 44 to an MSU 42, said transmitted message being received 46 at the MSU after a propagation delay Td 45 and also received 48 at the
  • neighbor SPU#2 43 measures the time Tl 55 from the received
  • Tl Tm + Ts + Td + (Td2 - Tdl)
  • Td2 Tl - Tm - Ts - Td + Tdl
  • Td2 is the calculated propagation time between the MSU and neighbor SPU#2.
  • Tl is measured by the neighbor SPU#2 and transmitted to the center.
  • Td is calculated by SPU#1 and transmitted to the center. 4. Tm and Ts are fixed values.
  • Tdl is the propagation time between both SPU#1 and SPU#2, and may be calculated from the relative positions ofthe units or measured a priori by one ofthe units.
  • the measured time Tl is sent to the center by any of the neighbor SPU's, and the center calculates Td2 from each neighbor to the MSU. As may be apparent to the skilled, knowing
  • said MSU location is also calculated.
  • each neighbor SPU will be able to calculate its distance from the target MSU, without the intervention of the center and without knowing
  • Td (the propagation time between SPU#1 and the target mobile/portable unit).
  • a supervision unit SPU#1 81 sends a message Tm 84 to an MSU 82, said transmitted message being received 86 at the MSU after a propagation delay Td 85 and also received 88 at the
  • SPU#2 does not transmit any message to the MSU.
  • neighbor SPU#2 83 measures the time Tl 101 and T2 102 from the received
  • Tl Tm + Ts + Td + (Td2 - Tdl)
  • T2 Tm + Ts + Td + (Tdl - Td2)
  • Tl - T2 2*(Td2 - Tdl)
  • Td2 (Tl - T2)/2 + Tdl
  • Td2 is the calculated propagation time between the MSU and neighbor SPU#2.
  • Tl and T2 are measured by the neighbor SPU#2.
  • Tm and Ts are fixed values.
  • Tdl is the propagation time between both SPU#1 and SPU#2, and may be calculated
  • this process can be performed simultaneously by many neighbors.
  • Each neighbor SPU can calculate the distance to the mobile/portable unit, said calculation
  • the location process may be carried out by a local computer, which communicates with only a portion ofthe network.
  • an SPU and/or CTU have computing means and are connected to the Internet network.
  • Said connection to the Internet network allows remote users having access to the Internet, to contact this unit (SPU or CTU) and perform different operations.
  • this unit SPU or CTU
  • contact with such a unit preferably requires some level of access protection (e.g. password), said access protection being defined for each level of access (e.g. Change parameters, location request, etc.).
  • Said contact with an SPU or CTU may be used, but not limited to, for the functions described below:
  • SPU or CTU setup A customer or permitted user may access a unit or group of units and change setup parameters. Said parameters may include, monitoring parameters, searching requests, units ID, etc. In addition said link may be used for download of new software versions, computerized maps or any other files requested for the SPU or CTU operation.
  • SPU control and status SPU units may be remotely controlled allowing users or the communication center to request said SPU units to perform specific operations (e.g. monitoring, search, messaging, etc.), said operations normally related to mobile/portable units associated to said SPU.
  • specific operations e.g. monitoring, search, messaging, etc.
  • said SPU may report to users or communication center status information, said status information preferably including operational parameters, usage counters used for customer billing, statistics, routing, etc., diagnostics results, history reports, etc.
  • this link is also used to control, said control including control of lights, video cameras, etc. or get status of the alarm system, said status including alarm status, video pictures, etc.
  • a CTU may be also controlled and/or contacted to retrieve status information, said control or status information retrieval preferably limited to restricted personnel responsible ofthe system.
  • SPU or CTU query Users or the communication center may request information from an
  • SPU or CTU said information being text information (e.g. messages, etc.), visual information (e.g. maps, pictures, etc.) or audio information (e.g. voice messages, etc.).
  • text information e.g. messages, etc.
  • visual information e.g. maps, pictures, etc.
  • audio information e.g. voice messages, etc.
  • a user may access an SPU installed in his private home and get visual information about the location of his child, said child carrying an MSU.
  • Said information may include distances to mobile/portable units, azimuth to said units, etc.
  • any of the above query options are also possible directly with a commumcation center, said center being able to report information to authorized persons.
  • Said center services may also include message delivery, tracking history, etc.
  • said Internet network link is used for message routing between SPU's, CTU's and centers, being said Internet link an effective alternative to other wireless or wired links.
  • a mobile portable unit having range measurement means, measures the distance from several fixed units, said measurement being performed in a similar way a described before. Said measurements from several units and their absolute location are used by the mobile/portable unit, said mobile/portable unit being an
  • said position data may be used to show said mobile/portable unit position on a digitized map displayed in said unit or in an attached display or in an attached terminal unit having said display, said location data also used by said mobile/portable unit to perform different functions including self-monitoring, tracking, guidance, speed and direction measurement, etc.
  • calibration ofthe network is performed in order to achieve better accuracy in the location process, and ranging or azimuth measurements.
  • Said calibration process is preferably performed by measuring the range and/or azimuth to special units, said special units located in known places, said range or azimuth measurements compared to known values. Based on the difference between said measured values and said known values, offset values are calculated for each unit, said unit being an SPU or CTU, said offset values used to correct subsequent measurements of said SPU or CTU unit.
  • network operation may combine usage of Ground Positioning System (GPS) receivers, said GPS receivers allowing each SPU to calculate its own position with a high precision Beside the basic functions of distance and azimuth measurement, location and messaging, the GPS receivers
  • the wireless communication channel used for security related messaging may be used to transfer general two-way messages between any two elements ofthe network.
  • error correction codes said error correction codes being adapted to the communication channel conditions. All non-broadcast messages are preferably acknowledged in order to ensure said
  • the user is preferably performed by pressing a button (e.g. panic button).
  • a button e.g. panic button.
  • canned messages preferably including a message code
  • said free text messages comprising alphanumeric characters (e.g. ASCII coded) with or without encryption (to improve privacy and security). Received messages may also be used to send and send alphanumeric characters (e.g. ASCII coded) with or without encryption (to improve privacy and security). Received messages may also be used to send and receive alphanumeric characters (e.g. ASCII coded) with or without encryption (to improve privacy and security). Received messages may also be used to
  • Emergency messages are preferably sent by a mobile/portable unit, said mobile/portable unit
  • Said trigger type depends on the mobile/portable unit type while the
  • emergency code or data being transmitted preferably varies according to the distress event. Typical examples of such events are: 1. Panic button pressed.
  • Alarm triggered e.g. car alarm
  • Message data may include detailed description of the sensed data.
  • said emergency message is preferably sent first by said mobile/portable unit to its associated SPU unit(s). If after several retries, there is no response from said associated SPU unit(s), said MSU or SRU will broadcast said emergency message to any SPU and/or CTU unit being able to respond to said emergency message. SPU or CTU units, which received the message, will send a monitoring message to said mobile/portable unit, said monitoring message being the response to said broadcasted emergency message and also to measure the distance and optionally the azimuth, having said SPU or CTU unit direction finding means.
  • said SPU or CTU will measure the distance and optionally the azimuth to said mobile/portable unit.
  • Emergency messages received by an SPU or CTU will be routed to the center and/or other network elements, said emergency messages preferably including the MSU or SRU ID, emergency message code, additional message data, measured distance, time-of-day, SPU or CTU ID, etc.
  • mobile/portable units are also able to transmit control messages, said control messages being received by SPU units and said control messages converted to control signals, said control signals used to control home appliances or other electrical/electronic equipment, or said control information received sent to home units being able to communicate with said SPU, said communication being wired or wireless.
  • said control messages may be also preferably acknowledged either by the SPU receiving the said message or by the target home unit, said home unit being able to send an acknowledgement message (through the SPU) or to generate an acknowledgement signal.
  • Monitoring messages are used to perform routine monitoring of MSU units by searcher units (SRU) or supervision units (SPU), said message type being transmitted either by an MSU or by an SRU or SPU and preferably addressed to associated units, while range and/or azimuth measurements being processed locally and if no special events are detected, no additional actions being performed. In other cases, a report will be preferably sent to the center or any other destination or a special notification will be given.
  • SRU searcher units
  • SPU supervision units
  • Text and coded messages are standard messages used to exchange any type of data between the network units, said messages having a format, which preferably differs according to the units exchanging the data and to the purpose ofthe message being sent.
  • Broadcast messages are sent and addressed to a plurality of units, said plurality of units being a group of units or all network units, said message having different types which several examples are following described.
  • audible form displayed on an alphanumeric display means, although they can be provided in other forms, e.g., audible form, said audible form being a synthesized or pre-recorded voice message
  • the user of the SPU, CTU is the user of the SPU, CTU
  • an SPU may automatically initiate
  • terminal units connected to a center or to concentrator units are used to retrieve specific information from the system, said terminals comprising computing and I/O means and said specific information comprising information about mobile/portable units (e.g. location, messages being sent and/or received, etc.).
  • part or all of the network units include mobile/portable units (MSU and/or SRU), SPU, CTU and communication center include also a link to an existing wireless network, said wireless network being a pager network, cellular telephone network, etc.
  • MSU and/or SRU mobile/portable units
  • SPU SPU
  • CTU CTU
  • communication center include also a link to an existing wireless network, said wireless network being a pager network, cellular telephone network, etc.
  • Said wireless link may preferably be used for different purposes, such as:
  • Mobile/portable units may be called or paged using this link.
  • Sync frames or control signals periodically transmitted by one of said networks may be used for synchronization purposes by either mobile/portable units or fixed installed units, said synchronization allowing units to transmit or receive and pre-programmed times.
  • Sync frames or control signals periodically transmitted by one of said networks may be used by mobile/portable units (MSU and/or SRU) or fixed units (SPU and/or CTU and/or communication center) to correct their internal local oscillator using said received signals from said networks as a reference signal, said local oscillator correction being done by comparing the local oscillator frequency or a derivative to said received signal frequency or a derivative, then modifying said local oscillator frequency to minimize the difference between said two frequencies.
  • MSU and/or SRU mobile/portable units
  • SPU and/or CTU and/or communication center fixed units
  • PSTN - Telephone line is used by an SPU or CTU to send emergency messages to the commumcation and service center, or by the communication and service center to send any type of information to one ofthe SPU's or CTU's.
  • wired commumcation channels This may include ISDN networks, cable-TV networks, computer networks (e.g. Internet), etc.
  • Security Network wireless communication - Messages are routed from point to point by transmitting the message between neighbor SPU's and CTU's using the wireless channel.
  • Other wireless communication networks This may include cellular networks, packet data networks, SMR and paging networks, etc.
  • routing algorithms are used to route messages within the network, said message routing between any two units in the network depending on unit capabilities and configuration, network topology, routing algorithms used, said routing algorithms using metrics as following described:
  • Routing cost being based on the path with the shortest hop count.
  • Routing cost being based on the number of radios that can overhear transmission on the link.
  • Max-Min Residual Capacity Routing Routing cost being based on traffic dependent metric, said metric being a function of probability of successful transmission and interference.
  • routing metrics may be used as an alternative or in combination to the metrics mentioned above.
  • the distance between nodes is used for routing.
  • the shortest distance to the target is used to decide which is the preferred neighbor to route the message to a specific destination.
  • Fig. 8 there is shown an example of a network with a description of the routing tables from supervision units to a center.
  • the network comprises a center 113, two concentrator units 112 (CTU#A and CTU#B) and five supervision units 111 (SPU#1-SPU#5).
  • messages are routed to said center 113 through said concentrator units 112.
  • Each supervision unit has a table 115, said table describing the preferred neighbor to reach a specific concentrator unit, said preferred neighbor being the shortest available path to said concentrator for said SPU unit.
  • the preferred neighbor is selected by the shortest path to a specific concentrator.
  • An SPU willing to send a message to the center 113 may select concentrator CTU#A or CTU#B or both to transfer the message.
  • the CTU selected it will select the preferred neighbor. For example, if SPU#4 desires to send a message via CTU#A, it will select SPU#5 (the overall distance to CTU#A is 1500).
  • many other preferred embodiments may be implemented, including tables, wliich contain more than one preferred neighbor for each concentrator, additional parameters for the neighbor selection (e.g. azimuth), other routing metrics, etc.
  • Neighbor tables including routing information are built during the initial network configuration and periodically updated.
  • initial configuration is obtained by broadcasting messages from each of the concentrator units to its neighbors said neighbors building a table including its distance from the concentrator and other parameters as defined by the routing algorithm.
  • Said network configuration continues by propagating configuration messages between the network units, said units building a table including the best neighbor to one or more of said concentrators, said table optionally including more than one alternative for each concentrator, with priority to the best alternative.
  • network topology is dynamic and may change, as units are added, removed, or not operational.
  • the network as described in this invention reconfigures itself periodically and updates the routing tables on each network unit, said network update being preferably performed at specific intervals and/or as result of messages transmitted during normal operation.
  • each or part of the network units has routing tables to other units within the network (not only concentrators or center), thus allowing message transfer between any two units or selected units and said routing tables being built using prior art algorithms.
  • networks of the invention may be operated independently, said networks being operated in different areas and being connected to one or more communication centers, said communication centers being able to communicate with one or more of said independent networks.
  • Communication between two units of said independent networks, said units being mobile/portable or fixed installed, are preferably done either through a communication center or centers or either through other communication lines, said communication lines being wired (e.g. PSTN, computer networks, etc.) or wireless (e.g. cellular, SMR, etc.).

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  • Physics & Mathematics (AREA)
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  • Child & Adolescent Psychology (AREA)
  • General Health & Medical Sciences (AREA)
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  • Computer Security & Cryptography (AREA)
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Abstract

Cette invention se rapporte à un système de sécurité comprenant plusieurs unités basées à domicile pourvues d'organes de télémétrie et mises en communication avec un central, ainsi que plusieurs unités mobiles/portables reliées ou non reliées aux unités basées à domicile. Chaque unité mobile/portable est capable de communiquer avec une ou plusieurs unités basées à domicile situées à proximité. Ce système peut en outre comporter des organes de radiogoniométrie et fonctionner dans une bande sans licence. Les unités basées à domicile peuvent être connectées ou intégrées à une alarme domestique, un ordinateur ou un dispositif électronique. Les organes de télémétrie des unités basées à domicile peuvent utiliser des techniques à spectre étalé.
PCT/IL2000/000108 1999-03-01 2000-02-21 Reseau et systeme de securite WO2000052658A1 (fr)

Priority Applications (1)

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AU26868/00A AU2686800A (en) 1999-03-01 2000-02-21 Security network and system

Applications Claiming Priority (2)

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IL128784 1999-03-01
IL12878499A IL128784A0 (en) 1999-03-01 1999-03-01 Security network and system

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WO2002049270A2 (fr) * 2000-12-11 2002-06-20 Horst Ziegler Procede pour la gestion d'une multitude de composants de commande de batiment ou de calcul de consommation dans des batiments
EP1282094A2 (fr) * 2001-08-03 2003-02-05 Siemens Gebäudesicherheit GmbH & Co. OHG Méthode de transmission hertzienne dans un système d'alarme
EP1469437A2 (fr) * 2003-04-16 2004-10-20 Siemens Aktiengesellschaft Méthode de transmission radio dans un système de signalisation de danger
EP1494191A2 (fr) * 2003-04-17 2005-01-05 Siemens Aktiengesellschaft Procédé de la demande d'un utilisateur au système d'alarme radio
EP1606779A1 (fr) * 2003-03-26 2005-12-21 Janet Elisabeth Williams Dispositif de surete personnelle
US7006838B2 (en) 2002-11-27 2006-02-28 Cognio, Inc. System and method for locating sources of unknown wireless radio signals
WO2008147244A1 (fr) * 2007-05-30 2008-12-04 Motorola, Inc. Procédé et système pour fournir une sécurité de véhicule
EP2068289A1 (fr) * 2007-12-07 2009-06-10 Compagnie Industrielle et Financiere d'Ingenierie Ingenico Procédé de protection contre le vol de terminaux, système, terminal et produit programme d'ordinateur correspondants
WO2010097965A1 (fr) * 2009-02-27 2010-09-02 Panasonic Electric Works Co., Ltd. Système de surveillance pour la sécurité à domicile
WO2010097963A1 (fr) * 2009-02-27 2010-09-02 Panasonic Electric Works Co., Ltd. Système de surveillance de sécurité de domicile
EP2244238A1 (fr) * 2003-08-22 2010-10-27 G4S Justice Services (Canada) Inc. Procédé et système pour commuter les unités de monitorisation d'un système éléctronique de monitorisation de position.
EP3396493A1 (fr) * 2017-04-28 2018-10-31 Siemens Aktiengesellschaft Système permettant d'interagir avec un dispositif à travers des actions simples d'un utilisateur
US10846387B2 (en) 2017-07-12 2020-11-24 At&T Intellectual Property I, L.P. Managing access based on activities of entities
US10959056B1 (en) 2019-11-26 2021-03-23 Saudi Arabian Oil Company Monitoring system for site safety and tracking
US10984644B1 (en) 2019-11-26 2021-04-20 Saudi Arabian Oil Company Wearable device for site safety and tracking
WO2021105760A1 (fr) * 2019-11-26 2021-06-03 Saudi Arabian Oil Company Dispositifs, réseaux et systèmes d'intelligence artificielle pour la sécurité et le suivi de site
US11710085B2 (en) 2019-11-26 2023-07-25 Saudi Arabian Oil Company Artificial intelligence system and method for site safety and tracking
SE2251035A1 (en) * 2022-09-06 2024-03-07 Skyresponse Ab Social alarm system, computer-implemented method therefor, computer program and non-volatile data carrier

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Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002049270A3 (fr) * 2000-12-11 2002-11-07 Horst Ziegler Procede pour la gestion d'une multitude de composants de commande de batiment ou de calcul de consommation dans des batiments
WO2002049270A2 (fr) * 2000-12-11 2002-06-20 Horst Ziegler Procede pour la gestion d'une multitude de composants de commande de batiment ou de calcul de consommation dans des batiments
EP1282094A3 (fr) * 2001-08-03 2005-01-19 Siemens Gebäudesicherheit GmbH & Co. OHG Méthode de transmission hertzienne dans un système d'alarme
EP1282094A2 (fr) * 2001-08-03 2003-02-05 Siemens Gebäudesicherheit GmbH & Co. OHG Méthode de transmission hertzienne dans un système d'alarme
US7551936B2 (en) 2001-08-03 2009-06-23 Siemens Gebaudesicherheit Gmbh & Co. Ohg Method of radio transmission in a danger alarm system
US7006838B2 (en) 2002-11-27 2006-02-28 Cognio, Inc. System and method for locating sources of unknown wireless radio signals
EP1606779A1 (fr) * 2003-03-26 2005-12-21 Janet Elisabeth Williams Dispositif de surete personnelle
EP1469437A3 (fr) * 2003-04-16 2005-08-10 Siemens Aktiengesellschaft Méthode de transmission radio dans un système de signalisation de danger
US7248854B2 (en) * 2003-04-16 2007-07-24 Siemens Aktiengesellschaft Method for radio transmission in an alarm signaling system
EP1469437A2 (fr) * 2003-04-16 2004-10-20 Siemens Aktiengesellschaft Méthode de transmission radio dans un système de signalisation de danger
EP1494191A3 (fr) * 2003-04-17 2005-01-12 Siemens Aktiengesellschaft Procédé de la demande d'un utilisateur au système d'alarme radio
EP1494191A2 (fr) * 2003-04-17 2005-01-05 Siemens Aktiengesellschaft Procédé de la demande d'un utilisateur au système d'alarme radio
US7363036B2 (en) 2003-04-17 2008-04-22 Siemens Aktiengesellschaft Procedure for registering a new subscriber in a radio system through routers
EP2244238A1 (fr) * 2003-08-22 2010-10-27 G4S Justice Services (Canada) Inc. Procédé et système pour commuter les unités de monitorisation d'un système éléctronique de monitorisation de position.
WO2008147244A1 (fr) * 2007-05-30 2008-12-04 Motorola, Inc. Procédé et système pour fournir une sécurité de véhicule
FR2924846A1 (fr) * 2007-12-07 2009-06-12 Ingenico Sa Procede de protection contre le vol de terminaux, systeme, terminal et produit programme d'ordinateur correspondants.
EP2068289A1 (fr) * 2007-12-07 2009-06-10 Compagnie Industrielle et Financiere d'Ingenierie Ingenico Procédé de protection contre le vol de terminaux, système, terminal et produit programme d'ordinateur correspondants
US8182549B2 (en) 2007-12-07 2012-05-22 Compagnie Industrielle et Financiere d'Ingenierie “Ingencio” Terminal theft protection process, and corresponding system, terminal and computer program
WO2010097965A1 (fr) * 2009-02-27 2010-09-02 Panasonic Electric Works Co., Ltd. Système de surveillance pour la sécurité à domicile
WO2010097963A1 (fr) * 2009-02-27 2010-09-02 Panasonic Electric Works Co., Ltd. Système de surveillance de sécurité de domicile
EP3396493A1 (fr) * 2017-04-28 2018-10-31 Siemens Aktiengesellschaft Système permettant d'interagir avec un dispositif à travers des actions simples d'un utilisateur
US11568034B2 (en) 2017-07-12 2023-01-31 At&T Intellectual Property I, L.P. Managing access based on activities of entities
US10846387B2 (en) 2017-07-12 2020-11-24 At&T Intellectual Property I, L.P. Managing access based on activities of entities
US10959056B1 (en) 2019-11-26 2021-03-23 Saudi Arabian Oil Company Monitoring system for site safety and tracking
US10984644B1 (en) 2019-11-26 2021-04-20 Saudi Arabian Oil Company Wearable device for site safety and tracking
WO2021105760A1 (fr) * 2019-11-26 2021-06-03 Saudi Arabian Oil Company Dispositifs, réseaux et systèmes d'intelligence artificielle pour la sécurité et le suivi de site
US11710085B2 (en) 2019-11-26 2023-07-25 Saudi Arabian Oil Company Artificial intelligence system and method for site safety and tracking
US11937147B2 (en) 2019-11-26 2024-03-19 Saudi Arabian Oil Company Monitoring system for site safety and tracking
SE2251035A1 (en) * 2022-09-06 2024-03-07 Skyresponse Ab Social alarm system, computer-implemented method therefor, computer program and non-volatile data carrier
WO2024054145A1 (fr) * 2022-09-06 2024-03-14 Skyresponse Ab Système d'alarme sociale, procédé mis en œuvre par ordinateur associé, programme informatique et support de données non volatil
SE546305C2 (en) * 2022-09-06 2024-10-01 Skyresponse Ab Social alarm system for a person in distress and computer-implemented method therefor

Also Published As

Publication number Publication date
AU2686800A (en) 2000-09-21
IL128784A0 (en) 2001-01-28

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