EP3701393A1 - Method for geolocation of connected objects, connected object, associated terminal and system - Google Patents
Method for geolocation of connected objects, connected object, associated terminal and systemInfo
- Publication number
- EP3701393A1 EP3701393A1 EP18803460.7A EP18803460A EP3701393A1 EP 3701393 A1 EP3701393 A1 EP 3701393A1 EP 18803460 A EP18803460 A EP 18803460A EP 3701393 A1 EP3701393 A1 EP 3701393A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- location data
- data
- terminals
- connected object
- location
- 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
Links
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/29—Geographical information databases
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/023—Services making use of location information using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
- G01S11/02—Systems for determining distance or velocity not using reflection or reradiation using radio waves
- G01S11/06—Systems for determining distance or velocity not using reflection or reradiation using radio waves using intensity measurements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/0009—Transmission of position information to remote stations
- G01S5/0072—Transmission between mobile stations, e.g. anti-collision systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/0284—Relative positioning
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/14—Determining absolute distances from a plurality of spaced points of known location
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/029—Location-based management or tracking services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
Definitions
- the invention relates to the field of connected objects having a wireless reception means for communicating with terminals which know their locations.
- the invention relates more particularly to the fact that the object receives from these terminals their location data and computes geolocation information of its own position.
- Connected objects are electronic devices connected wirelessly, sharing information with a computer, a tablet or a smartphone (or “smartphone” according to the English terminology) ... and able to perceive, analyze and act depending on the context and their environment. These objects are often used in the technical context of IoT (meaning “Internet of Things", according to English terminology).
- IoT meaning "Internet of Things", according to English terminology.
- a plurality of connected objects are deployed in the field in order to fulfill application objectives.
- the applications are for example the monitoring of the transport of food, in this case the object includes a thermometer and a memory. In this way the recipient can read the temperature data stored in the object and thus check that the cold chain has not been broken.
- Connected objects can take all kinds of aspects among which can be mentioned: a compact module, a watch, a heartbeat detector, an electronic chip inserted in a garment, ...
- the connected objects have a bidirectional radio communication means for communicating with a communication device. communication. Such a means makes it possible to trace information and / or receive commands.
- the radio communication means may use range-dependent technologies. NFC, Bluetooth and Zigbee protocols are preferred for short range.
- the links in WIFI or in Z-Wave are rather used for medium range.
- the object communicates preferably using a cellular network, GSM for example.
- the connected object incorporates a battery-operated locating device (using for example the GPS system or another geolocation system).
- the object In the case where the object is not intended to move, one can during his installation to communicate him his location data so that he memorizes them. For this, the operator realizes a position report with its location system (a smartphone, or a terminal with a GPS module) and transmits the location data by radio to the connected object. This data can later be transmitted by the object during communications with a remote terminal.
- its location system a smartphone, or a terminal with a GPS module
- the object communicates with a cellular network (the GSM system for example)
- the multiple receptions by this object of a signal transmitted by the basic fixed stations / gateways / access points are used by this object for calculating the location data by calculation of triangulation using the difference in arrival time and / or signal strength, and the position of the stations.
- geolocation solutions by using directional antennas on receivers located in the connected object in addition to conventional calculations. By orienting the antenna, the object determines the directions of radio signals from localized sources (such as fixed beacons) and derives its own position.
- a geolocation GPS type module consumes a lot of energy for these objects whose power is often reduced to a very low capacity battery.
- the incorporation of a geolocation module occupies a non-negligible space, which is not always possible given the volume available in the connected object.
- the geolocation module is not static and / or that the installation does not make it possible to raise the position (interior installation or other), it is not always easy / possible to raise the position during the installation. 'installation.
- the use of receivers to perform triangulation calculations is very expensive in terms of hardware (specific receivers with very precise clock synchronization) and requires a communication network with fixed beacons for an inaccurate result.
- to precisely locate an object it is necessary to receive radio signals emanating from at least three receivers which are sufficiently distant from each other.
- the present invention provides a solution that does not have the drawbacks described above, while offering the advantages listed below.
- the present invention makes it possible in particular for connected objects, not having their own localization means, to be able to calculate their location themselves without resorting to various measurement techniques on the signals emitted by the objects and measured by third-party equipment (e.g. infrastructure including dedicated tags). 4. Presentation of the invention
- the invention relates to a connected object having a wireless receiving means for receiving signals from a plurality of localized terminals, said signals including location data for locating said localized terminals.
- the connected object comprises a calculation means able to determine geolocation information of its position from a plurality of data from different localized terminals.
- the calculation means determines a precision datum associated with the computed geolocation information, the value of this precision datum takes into account a number of occurrences of location data used for calculating the geolocation information.
- the connected object comprises means for transmitting the precision data and the location information, outside the terminal.
- this solution allows both not to consume too much energy, not to add equipment in the object because of its reduced volume and not to increase costs.
- This solution also makes it possible to locate an object that moves.
- the calculation means determines a precision datum associated with the computed geolocation information, the value of this precision datum takes into account a number of occurrences of location data used for calculating the geolocation information.
- the calculated geolocation information is associated with a precision datum which is calculated in particular from the number of occurrences of location data received by the connected object. It is possible to inform a recipient of the data locating the object, the accuracy of this data.
- the object further comprises a first control means for periodically activating and deactivating the reception and calculation means, the activation frequency of the reception and calculation means evolving inversely proportional to the value. of the precision data.
- the activation frequency may decrease if the accuracy of the computation of the geolocation information increases or is greater than a predetermined value. In this way, it is possible to awaken the object less often and thus to save its battery, when the accuracy on the position is good.
- said signals furthermore comprise data representing the power of the signal transmitted by localized terminals, the calculating means determining the distance between the object and these terminals as a function of the power data received and the amplitude of the signal measured on reception, the calculating means determining the geolocation information of the object by using the distances with the localized terminals.
- the object measures the power of the received signal and, knowing the transmission power, it can then calculate the theoretical distance which separates it from this terminal, this distance being taken into account for the calculation of the information of geolocation.
- the precision data determined by the calculation means depends on the number of occurrences of location data used to determine distances between the object and the terminals and which have been used to calculate the distance between the object and the terminals. geolocation information of the object. In this way, the calculation of the precision data also takes into account the determination of the distance, the geolocation being more precise when the distance with the terminals is calculated.
- the object comprises a second control means for activating and deactivating the calculation means, and in that the location data are transmitted by the terminals located in a packet comprising an identifier in its header. , the second way control system activating the calculation means upon receipt of the identifier for processing the location data contained in the body of the packet.
- the preamble announcing the transmission of location data transmitted by a terminal, it is possible to wake the control unit of the object sufficiently early so that the processing of the data is carried out correctly. after its broadcast.
- the object comprises transmission means for transmitting the geolocation information determined by the calculation means.
- the connected object in turn transmits its position and becomes in fact a localized terminal, with respect to another connected object that needs to locate.
- the object has a memory for storing a succession of geolocation information determined by the calculation means, said calculating means determines that the object is in motion when at least two information of consecutive geolocation deviate geographically from at least a predefined distance. In this way, it is possible to easily determine whether the object is mobile or is fixed, and to inform a remote server.
- the object comprises a control means for periodically activating and deactivating the location data collecting and computing means of the geolocation information, and a motion detection module configured to increase the frequency activation of the reception and calculation means during the detection of a movement of the object.
- the invention in another aspect, relates to a method of geolocation of an object provided with a wireless reception means comprising the following steps: - receiving by the object signals from a plurality of localized terminals, said signals including location data for locating said localized terminals,
- the invention also relates to a geolocation system comprising a plurality of localized terminals and at least one connected object provided with a wireless reception means for receiving wireless signals from said localized terminals, said signals comprising location data for locating said localized terminals, the object comprising a computing means processing a plurality of location data from different localized terminals and providing from these data geolocation information of the position of the object and a piece of data computationally calculated by taking at least a count of occurrences of location data used for the computation of the geolocation information.
- the invention also relates to a terminal comprising means for obtaining location data representing the geographical position of said terminal and a means of wireless broadcasting of said location data.
- the broadcasting means is configured to broadcast at least one burst of consecutive messages sent to different powers, and respectively containing said location data.
- the invention relates to a broadcasting method implemented by a terminal characterized in that it comprises a step of obtaining location data representing the geographical position of said terminal and a wireless broadcast step of at least one burst of consecutive messages sent at different powers, said messages containing said location data
- the invention also relates to a computer program product comprising program code instructions for the execution of one of the methods described above.
- FIG. 1 shows a communication system comprising connected objects and localized terminals according to an exemplary embodiment
- FIG. 2 shows the main elements of a connected object according to an exemplary embodiment
- FIG. 3 presents a first variant for geolocating a connected object by using the transmission power of the messages
- FIG. 4 presents an example of a flowchart of the main steps of a method for locating a connected object
- FIG. 5 shows a table of the results of calculations performed to determine whether the object is moving.
- the present invention allows a connected object to calculate its own position.
- the connected object has a wireless reception means for receiving signals from a plurality of localized terminals, these signals including location data for locating said localized terminals.
- the object further comprises a calculation means capable of determining geolocation information of its position from a plurality of data from different localized terminals.
- Fig. 1 shows a communication system comprising connected objects and terminals located according to an exemplary embodiment.
- This system comprises a communication network 1 in which terminals 2, 2.1, 2.2, 2.3, 2.4, 2.5 communicate with each other by a wireless link, in voice, by light, or by radio (Wifi for example, or any signal radio).
- These terminals are for example mobile phones, computers, digital tablets, computers, ... or any other terminal communicating remotely, for example by radio.
- the terminals 2 have a geolocation means or already know their location data, which is why, in the rest of the document, they are called “localized terminals". This means of geolocation can be embedded in the terminal, as is the case of a GPS module (meaning "Global Positioning System" according to the English terminology).
- the C-loc location data of the terminal can also be elaborated by the terminal in relation to the communication network, as is the case for cellular telephones (by a triangulation calculation involving transmission times signals).
- the telephone 2 communicates with several fixed bases 3 and exchanges specific messages for the calculation of positioning.
- the bases 3 emit messages containing their own location data, and a time reference to time stamp the transmission of messages.
- the messages are broadcast around the base and received by the telephone 2 with a delay depending on the distance separating the two devices.
- the location data of at least three fixed bases 3 and calculating the distances between these bases and a terminal 2 calculates by triangulation its own position.
- the localized terminals 2 then transmit their location data C-loc in a message via the communication network 1.
- the location data are preferably transmitted by the terminals located in their vicinity by using specific radio transmissions, by a Bluetooth broadcast. for example.
- This radio broadcast can also be received by other types of devices, connected objects for example, and which are not intended to communicate with this network.
- C-loc location data can be transmitted between two terminals during an application session.
- the present invention relates to the fact that the messages transmitted by localized terminals and containing their location data C-loc, are captured by connected objects 4 (also called “communicating objects"). Once the computation of the location information called "INF_Loc" has been carried out thereafter, the connected object 4 may transmit it by broadcast, for example to a communication gateway 5 where it will be sent to the server of the application using the objects.
- connected objects 4 also called “communicating objects”
- the messages are sent by short-range radio means (NFC, Bluetooth or Zigbee protocols, for example) from the terminals 2, 2.1, 2.2, ...
- NFC short-range radio means
- the connected object 4 is capable of capturing a message sent by a terminal, then it is necessarily close, ie at a distance less than a preset distance DIST_min, this terminal.
- This distance DIST_min depends on the type of signals transmitted. In the case of Bluetooth, it is of the order of a few meters, in the case of WiFi, it is about fifty meters, and in the case of a GSM network, it is of the order of several kilometers.
- Fig. 2 illustrates the main components of a connected object 4 according to a preferred embodiment.
- the connected object 4 comprises in particular the following elements:
- control unit 10 typically a microprocessor and its associated program memory 11,
- nonvolatile data memory 12 for example flash memory or EEPROM
- an "opportunistic" radio signal reception means 14 intended to pick up the messages transmitted by the localized terminals.
- This means is preferably carried out by the control unit 10 and a software module.
- the reception mode can be simply unidirectional, and this means can receive signals according to different protocols.
- the connected object geolocates, ie determines a location information INFJoc, by capturing messages from terminals.
- These terminals can indifferently be of the same type or of different type (using the GSM network and a Wifi network for example).
- a transmission means 15 intended to transmit at least the measurements of the environmental sensors 13.
- This connection can be short range radio, long range radio, or else by induction or by electrical contacts ... It can be simply unidirectional. No limitation is made to the type of this link,
- At least one environment sensor 13 (optional), the type of which depends on the application using the object, for example a thermometer, a pressure sensor, a humidity sensor, an anemometer, the measurements made by these sensors are processed by the CPU 10 and stored in memory 12 to be transmitted later.
- environment sensor 13 for example a thermometer, a pressure sensor, a humidity sensor, an anemometer
- the transmitting means 15 and the radio signal receiving means 14 form the same means for transmitting and receiving radio signals.
- the connected object can be placed in different operating modes defined as follows:
- the receiving means 14 is at least active to receive messages, and other components are no longer powered. In this mode, the connected object consumes as little power as possible, while having minimal activity.
- the connected object adopts one of these modes depending on the moment in which location data is determined.
- Fig. 3 illustrates the principle of computing a location information INF_Loc by showing circular areas centered around three localized terminals 2.1, 2.2 and 2.3, and considering that beyond these three areas, the messages are no longer captured.
- a connected object 4 located in a zone common to the three zones receives messages respectively containing the coordinates of three localized terminals 2.1, 2.2 and 2.3 possibly accompanied by their transmission powers.
- the coordinates represent C-loc location data within the meaning of the invention.
- the connected object 4 determines the maximum distances d1, d2 and d3 around the location data beyond which the messages sent by the terminals are no longer received.
- Fig. 3 represents these circular areas by circles around each terminal.
- the connected object determines the coordinates of the point where the object is located considering that each zone is circular, their intersections being represented by the Z zone drawn in dark.
- the connected object 4 calculates the location data of the point in the middle of this zone Z, this point being considered as the point where the connected object 4 is located.
- the geolocation data of this point represent INFJoc geolocation information in the sense of the invention. The more the calculation of the zone Z takes into account messages from different terminals, the more the zone Z will be delimited and the greater the accuracy of the calculation of the position of the object.
- the distance DIST_min between this medium and the edges of the place at the intersection of the three circular zones defines the accuracy of the calculation.
- the object can be at any point of the zone Z and not necessarily at its center. Later in this document, we will see other ways to calculate the accuracy PRE of the location of a connected object and how that data is exploited.
- the messages containing the location data do not contain an associated power value and the location information is calculated solely from the location data, for example by averaging these data. .
- the terminal 2 periodically broadcasts a message containing its location data C-loc, with a periodicity that is proportional to its speed of movement.
- a terminal which does not move transmits its position according to a long period, because when a device has received it once, these data change very little thereafter. If instead the localized terminal moves, its position at a given moment quickly becomes obsolete, and it is necessary to broadcast more often its position, ie its location data. In this way, the connected object can reiterate the location calculation using more recent data.
- the connected object 4 thus determines a new location information INFJoc.
- the connected object is provided with means for measuring the power of the radio signal received from the localized terminals.
- the localized terminals insert a piece of data representative of the power of the radio signal they transmit.
- the connected object 4 can measure the power of the received message and compare it with the transmit power indicated in the message.
- the attenuation of the power then makes it possible to calculate the distance between the object and the localized terminal that has sent this message.
- the geolocation information INF_Loc of the object is then determined using the distances with the localized terminals and the location data of these terminals.
- This second variant makes it possible, by comparing it with the first variant, to offer an increased precision of the position of the object.
- the terminal 2 broadcasts bursts of a predetermined number of messages with a power that increases or decreases from one message to another, each message containing at least the location data C-loc and a value representative of its transmission power.
- the object measures the powers of the different received messages and thus calculates more precisely the attenuation due to the distance than if it received a single message. According to this improvement, the accuracy of the geolocation data of the object increases more rapidly.
- the connected object can avoid measuring the power of the received signal but only confine itself to determining whether the message is received or not. For example, in the case where the terminal 2 sends a salvo of 3 messages containing identical C-loc location data and having increasing power, the connected object 4 can receive only the last two messages but not the first. In known manner, each signal transmission is associated with a determined distance DIST_min1, DIST_min2 and DIST_min3 (DIST_min1 ⁇ DIST_min2 ⁇ DIST_min3). The connected object then determines that there is a distance smaller than the distance DIST_min2 of the connected object 4.
- Fig. 4 shows an example of a flow chart of the main steps implementing a method for locating a connected object, according to the present invention.
- a connected object 4 is placed in an environment comprising a plurality of localized terminals, it is then powered on and executes its program stored in the memory 11.
- the object successively receives messages from terminals that contain at least one location data.
- the object determines whether the number of occurrences of the location data received since the last calculation is sufficient to perform a new calculation (step 4.2).
- the minimum number of messages to calculate the position of the object depends on the application. One message can suffice. In the embodiment described, at least three messages sent by different terminals are required to calculate the position of the object. When the fourth message is received, a new calculation is made with it and the last two other messages.
- step 4.2 If the test in step 4.2 is negative, the program loops back on itself and waits for other messages to be received. Otherwise, in step 4.3, the object computes a location information INFJoc and stores it in memory 12. The calculation takes at least the location of the terminals, that is to say the location data C -loc contained in the received messages and possibly the power indicated in these messages and / or the power measured on receipt of these messages, the latter two parameters for calculating a distance with the terminals considered. The connected object also evaluates whether location data received in one of the received messages is aberrant or not, this is particularly the case when a datum indicates a point located at a distance too far from the other data received.
- the object saves it in its data memory 12 (step 4.4) and optionally transmits it in a message destined for a gateway so that it is transmitted to an application server (step 4.5).
- the object comprises a radio transmission means for transmitting the geolocation information INF_Loc determined by the computing means, to other connected objects.
- step 4.6 the object analyzes the evolution of its geolocation information INF-loc and measures the differences between two calculations. If these deviations change by at least a determined distance during a determined duration, this means that the object moves at a certain speed which it calculates and records in its data memory 12 (step 4.6).
- a calculation is performed each time a set of three messages is received.
- the object stores in a circular file the messages received and that at regular time intervals, the control unit 10 uses the last three messages to extract the location data C- loc and calculate INFJoc location information
- Fig. 5 presents a table of the results of calculations made to determine if the object is moving.
- This table comprises three groups of message contents transmitted by localized terminals, the first group of messages made it possible to calculate a first position (x, y) of the object, the second group of messages made it possible to calculate a second position ( x + A, y + A) of the object, a third group ... a third position ( ⁇ + 2 ⁇ , y + 2A), and so on.
- the object can calculate its average speed during the time defined by the reception of these two messages. If the calculated speed is greater than a predefined threshold value, then the object can be considered to be moving.
- the object becomes periodically active after a duration in standby mode, the activation being managed by an internal clock.
- the object needs to quickly calculate its first position, and the periodicity of the awakenings is short.
- the object changes its internal clock to increase the periodicity of activations and to save the battery to make the connected object longer operational.
- the object Upon waking, the object enters ACTIVE mode and all components become operational. From this moment, the reception means captures all the radio messages transmitted in the vicinity and when a message contains a location data, the U.C. milking to calculate the position of the object. If the object detects that it is moving, then it calculates its position more often so as to give it greater precision. In step 4.7 and following a calculation of position and evaluation of the speed, the frequency of the activations of the object is updated and calculated so as to vary proportional to the speed of movement of this object .
- the object is characterized in motion when its speed exceeds a certain threshold.
- This threshold speed is entered in the memory 12 of the object and depends on the nature of it. If this object is intended to move (a bike for example) its threshold speed is of the order of 5 km / h, if on the other hand the object is not intended to move (a table for example), the threshold speed is a few meters per minute.
- the C-loc location data transmitted by the terminals are transmitted in a message or a data packet comprising a header (or a preamble) identifying the type of the data and a body containing said location data.
- the receiving means is active and receives all received radio messages.
- the receiving means constantly reads the data transmitted by radio and compares it with a message preamble data which identifies those containing the location data. When such a data is detected, then the location data will be received a short time later, the receiving means activates the CPU 10 for processing the data that will be received.
- the CPU records the data and determines whether a sufficient number of location data are received to determine the position of the object. If this is the case, the CPU calculates the geolocation data and optionally transmits it to the gateway 5.
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- Remote Sensing (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Radar, Positioning & Navigation (AREA)
- Databases & Information Systems (AREA)
- Theoretical Computer Science (AREA)
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- General Engineering & Computer Science (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
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Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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FR1760066A FR3072796A1 (en) | 2017-10-25 | 2017-10-25 | METHOD FOR GEOLOCATING CONNECTED OBJECTS, CONNECTED OBJECT, TERMINAL AND SYSTEM THEREFOR. |
PCT/FR2018/052633 WO2019081847A1 (en) | 2017-10-25 | 2018-10-23 | Method for geolocation of connected objects, connected object, associated terminal and system |
Publications (1)
Publication Number | Publication Date |
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EP3701393A1 true EP3701393A1 (en) | 2020-09-02 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP18803460.7A Ceased EP3701393A1 (en) | 2017-10-25 | 2018-10-23 | Method for geolocation of connected objects, connected object, associated terminal and system |
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Country | Link |
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US (1) | US11310627B2 (en) |
EP (1) | EP3701393A1 (en) |
FR (1) | FR3072796A1 (en) |
WO (1) | WO2019081847A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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FR3100952B1 (en) * | 2019-09-13 | 2022-06-03 | Orange | Process for locating a connected object |
FR3117723B1 (en) | 2020-12-15 | 2023-08-11 | Orange | Geolocation of communicating equipment in a collaborative network |
CN116045789B (en) * | 2023-03-24 | 2023-06-09 | 广东海洋大学 | Real-time monitoring method for displacement of goods in cold chain transportation |
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US20070184852A1 (en) * | 2006-01-17 | 2007-08-09 | Johnson David W | Method and system for location of objects within a specified geographic area |
US20090088180A1 (en) * | 2007-10-01 | 2009-04-02 | James Lamance | Computing geographical location of a mobile receiver using network measurement reports |
TWI442078B (en) * | 2011-02-25 | 2014-06-21 | Inst Information Industry | Positioning apparatus, positioning method and computer program product thereof |
GB201117723D0 (en) * | 2011-10-13 | 2011-11-23 | Sensewhere Ltd | Method of estimating the position of a user device using radio beacons and radio beacons adapted to facilitate the methods of the invention |
US9377522B2 (en) * | 2013-08-22 | 2016-06-28 | Qualcomm Incorporated | Utilizing a reference signal for indoor positioning |
US9398422B2 (en) * | 2014-11-05 | 2016-07-19 | Beco, Inc. | Systems, methods and apparatus for light enabled indoor positioning and reporting |
-
2017
- 2017-10-25 FR FR1760066A patent/FR3072796A1/en not_active Withdrawn
-
2018
- 2018-10-23 EP EP18803460.7A patent/EP3701393A1/en not_active Ceased
- 2018-10-23 WO PCT/FR2018/052633 patent/WO2019081847A1/en unknown
- 2018-10-23 US US16/759,173 patent/US11310627B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
FR3072796A1 (en) | 2019-04-26 |
US20210136520A1 (en) | 2021-05-06 |
US11310627B2 (en) | 2022-04-19 |
WO2019081847A1 (en) | 2019-05-02 |
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