FR3033970A1 - GEOLOCATION SYSTEM OF AN OBJECT. - Google Patents

Abstract

A system (100) for geolocating an object (10) comprising: - at least one network (50) for wireless access to the Internet comprising a set of access points (P1, P2, PN), each access point having a physical address and being able to regularly transmit a signal comprising data relating to this physical address (MAC) and the intensity of the associated signal; a device (20) mounted on said object (10), comprising a plurality of components, among which: at least one antenna (21, 21 ', 21 "), a microprocessor (22') for measuring the intensity of said signal, a memory (22) for recording all of said data, - a server (30) remote from the device (20), which is configured to receive these data via the antenna (21, 21 ', 21 ") and transmit the data relating to the physical addresses of the different access points (P1, P2, ... , PN) to a database (40) providing a link between a physical address of an access point (P1, P2, ..., PN) of the network (50) and the geolocation of this physical address; the system (100) being configured to geolocate the device (20) from data from this database (40) and signal intensities associated with those physical addresses. This geolocation makes it possible to find an object that would have been stolen from its legitimate user.

Description

33 9 70 GEOLOCATION SYSTEM OF AN OBJECT. The invention relates to a system for geolocation of an object. The geolocation of such an object may be of interest to determine where this object is located in case of theft. This object can in particular be a vehicle, for example an automobile or a motorcycle or a container. Many systems of this type have already been proposed. For example, reference may be made to US Pat. No. 5,917,423 (D1) or WO 2003/097418 (D2). In the document D1, it is proposed a system for tracking a vehicle by a radio frequency signal (VHF frequencies, generally) encoded with a unique code allowing the identification of a given vehicle. This system requires a network (VHF generally) specific enough loosely and therefore providing a poor positioning. In the document D2, it is proposed an improved system compared to that of the document D1, in which the tracking of a vehicle can also be performed by a radiofrequency signal based on the GSM network (UHF frequencies). Compared to the document D1, the use of the GSM network 20 makes it possible to improve the possible coverage area for tracking the vehicle. However, the GSM transmission is easily scrambled or impossible in case of obstacles and requires a subscription to an operator through a SIM card ("Subscriber Identity Module" in English terminology). An object of the invention is to overcome at least one of these problems. For this purpose, the invention proposes a system for geolocation of an object comprising: at least one wireless access network to the Internet comprising a set of 30 access points to said network, each access point comprising a physical address and being capable of regularly transmitting a signal comprising data relating to this physical address and to the intensity of the associated signal; a device mounted on said object, comprising several components, among which: at least one antenna for receiving, from each access point to the wireless access network to the Internet, which is within range of the device, to at least one of said signals, at least one microprocessor for measuring the intensity of said signal and more generally managing the operation of the various components of the device, at least one memory for recording all of these data; said at least one antenna furthermore making it possible to transmit, on the wireless access network to the Internet, a signal comprising the data stored in the memory of the device via access points of said network which are both within range of the device and open access; a server, remote from the device, which is configured on the one hand, to receive these data transmitted by said at least one antenna via the access points of the network which are freely accessible and on the other hand, transmitting the data relating to the physical addresses of the various access points to the at least one network to a database providing a link between a physical address of an access point of said at least one network and the geolocation of this physical address; the system being further configured to geolocate the device and therefore the object from data from this database and signal intensities associated with these physical addresses.

The system according to the invention may also comprise at least one of the following features, taken alone or in combination: the device is configured to transmit at least the newly stored data in its memory, after each storage in its data memory from a signal communicating to it the data relating to a new access point to the wireless access network to the Internet; 3033970 3 - the device is configured to differentiate the data from mobile access points to the wireless access network to the Internet from other data from fixed access points to the wireless access network to the Internet ; 5 - the device is configured to receive Bluetooth® identifiers accessible around the device and therefore the object and save them in memory; the device is configured to receive signals from GSM relays and comprising data relating to the identifiers of these GSM relays 10 and to the intensity of these GSM signals and to record these data in memory; the server, comprising one or more processors, which is configured so that the system can geolocate the device and therefore the object from data from the database and the intensities of the signals associated with these physical addresses; in order to determine the geolocation of the object, the server determines an area delimited by a minimum value of the intensity of the signal received by each access point, this minimum value being common to all the access points at the same time. less a wireless access network to the Internet; To determine the geolocation of the object, the server performs a positioning calculation of this object on the basis of the intensity of the signal emitted by at least the two access points to the wireless access network to the Internet presenting the highest intensity; the device is configured to receive data relating to the date and the time associated with the reception, by said device, of the signal coming from each access point to said at least one wireless access network at the Internet; the system, for example the server, is configured to determine the path followed by the object, which path can be stored in a memory; Said at least one wireless access network to the Internet is the VVi-Fi and / or VViMax network; The device comprises a non-directional antenna; the device comprises a plurality of directional antennas arranged to receive and transmit data in distinct and preferably complementary regions; the device comprises a switch for activating at least one of the plurality of directional antennas, this switch being connected for this purpose to the microprocessor; the device is configured to firstly determine which of the plurality of directional antennas receives the most data relating to the physical addresses of the points of access to the wireless access network to the Internet and for other share, control the switch on this directional antenna; the device is configured to control the switch so as to activate the different directional antennas periodically or randomly; the device is configured to switch to access point mode of the wireless access network to the Internet; the device is configured to automatically switch to wireless access network access point mode at the Internet, after a predetermined period of time during which the device, and therefore the object, have remained motionless; the device is configured to switch to access point mode of the wireless access network to the Internet upon receipt of a control signal from the server; The object being a vehicle, for example an automobile or a motorcycle, the device further comprises the following components connected to the microprocessor: at least one means for detecting the movement of the vehicle, for example an accelerometer and / or a magnetometer and at least one means for detecting the absence or presence of start-up of the motor 30 of said vehicle, for example an accelerometer and / or a microphone; the system, preferably the device, then being configured to determine on the basis of the information provided by said detecting means whether the vehicle has been moved engine stopped over a predetermined period of time depending on the nature of the vehicle concerned. The invention will be better understood and other objects, advantages and characteristics thereof will appear more clearly on reading the description which follows and which is made with reference to the appended drawings, in which: FIG. 1 is a diagram general of an embodiment of a system according to the invention; Figure 2 is a partial diagram of the system shown in Figure 1 in an improved version; FIG. 3 is a partial diagram of the system shown in FIG. 1 in another improved version; FIG. 4 is a partial diagram of the system shown in FIG. 1 in another improved version; Fig. 5 is a partial diagram of the system shown in Fig. 1 in another improved version; FIG. 6 is another partial diagram of the system shown in FIG. 1, when the object is a vehicle; FIG. 7 is a diagram of a device implemented in the system according to the invention which has been tested; Figure 8 provides data received and stored by the device tested and shown in Figure 7. Figure 1 is a representative diagram of a geolocation system of an object according to the invention. The geolocation system 100 of an object 10 comprises at least one Internet wireless access network 50 comprising a set of access points P1, P2, PN to said network. Each access point comprises a physical address ("MAC" address for Media Access Control according to the English terminology) and is capable of regularly transmitting signals comprising data at least relating to this physical address 3033970 6 (MAC) , the signal strength and the accessibility of this access point. The intensity of the signal can be the intensity called "RSSI" for Received Signal Strength Indication according to the English terminology.

However, the signal strength can be obtained otherwise. For the sake of simplicity, the rest of the description will refer to this RSSI intensity, but those skilled in the art will understand that any other technique for achieving this intensity at the device 20 may be employed. By "free accessibility" (or "free access"), network access points which do not have a password or for which the system 100 according to the invention has a right are to be understood. access. Such access points, as will be described more precisely below, make it possible to receive data from the device 20 and transmit them on the network 50.

The system 100 also comprises a device 20 mounted on the object 10. This device 20 comprises at least one antenna 21 for receiving, from each access point P1, P2, PN to the wireless access network 50. The Internet being within range of the device (20), at least one of said signals comprising data relating to the physical address (MAC) of the access point concerned and the intensity (RSSI) of this signal. This device 20 also comprises at least one microprocessor 22 'and a memory 22 for recording all the data received. The microprocessor 22 'makes it possible to manage the operation of the various components of the device 20 and in particular to measure the intensity (RSSI) of the or each signal received. Indeed, if the signal includes data relating to the intensity (RSSI) of this signal, its measurement is performed by the device 20 and more precisely by the microprocessor 22 '. Advantageously, a microcontroller will be used which integrates the microprocessor 22 'and the memory 22.

Said at least one antenna 21 also makes it possible to transmit, on the wireless access network 50 to the Internet, the data stored in the memory 22 of the device 20 via network access points. 50 which are both within the reach of the device 20 and free access.

For this purpose, only one antenna 21 can be considered to receive the data and to transmit them. However, it is possible to provide several antennas 21, 21 ', 21', as will be described in more detail in the following description in support of Figures 4 and 5.

The system 100 further comprises a server 30, remote from said device 20 and capable of communicating with a database 40, also remote from the device 20. The server 30 is configured to receive the data transmitted by said at least one antenna 21 of the device 20, via the access points of the wireless Internet access network 50, which are freely accessible. By way of this, the server 30 however receives all the data included in the memory 22, namely data relating to all the access points P1, P2, PN of the wireless access network 50 to Whether they are free or not.

This data or at least the physical addresses (MAC) are transmitted by the server 30 to the database 40. The database 40 can then provide a link between the physical address (MAC) of the access points to the network. which are available at server level 30 and their geolocation.

The system 100 is furthermore configured to geolocate the device 20 and therefore the object 10 from data from this database (40) and the intensities (RSSI) of the signals associated with these physical addresses (MAC). In one embodiment, it is the server 30 that can be configured to determine, with one or more processors 31, the geolocation (geographical position) of the device 20 and therefore of the object 3033970 8 on which the device 20 is mounted, from the intensities (RSSI) received from the device 20 and data from the database 40. This database 40 may be previously constituted.

FIG. 1 also illustrates a case where the server 30 determines the geolocation by communicating with a database 40 previously constituted and arranged at the same location as the server 30. To determine the geolocation of the device 20, the server 30 can proceed in different ways.

The server 30 knows the physical addresses (MAC) of the access points P1, P2, PN to the network 50 of wireless access to the Internet, as well as the geolocation of these access points through the database 40. The server 30 also knows the RSSI intensity associated with each of these access points.

With this data, the server 30 can determine, around each access point P1, P2, -, PN concerned of the network 50 of wireless access to the Internet a zone delimited by a minimum value, common to all of these access points, the intensity of the RSSI signal received from each access point concerned. The choice of this value makes it possible to exclude the access points whose intensity of the signal received by the device 20 is considered to be too low. This makes it possible to determine an approximate position of the object 10. Advantageously, and with these same data, the server 30 can choose at least the two access points to the network 50 of wireless access to the Internet whose signal RSSI is the most important. The server 30 can also easily determine the distance separating said at least two selected access points based on the intensity of the RSSI signal.

A positioning calculation of the object 10 can then be performed by the server 30 on the basis of the intensity of the signal transmitted by at least the two access points of the wireless access network 50 to the The Internet has the highest intensities. In another embodiment, it is still the server 30 that performs the calculations enabling the geolocation, based on a database 40 already available on the market. Indeed, several companies offer on the market such a database 40. It is therefore possible, with a subscription, to have access to such a database. The communication between the server 30 and the database is via the Internet, for example wired. In another embodiment, the geolocation calculation is not performed by the server 30, but performed by another server (not shown) comprising one or more processors of a company providing this service. This may especially be the case when the database 40 also comes from a company offering this service. In this case, the server 30 transmits the data it contains, namely at least the physical addresses (MAC) and the intensities (RSSI) of signals associated with this other server that can communicate with the database 40. geolocation of the device 20 is then transmitted to the server 30. The communication between the server 30 and the other server (not shown) can then be performed over the Internet, for example by wire. The wireless access network to the Internet may be the Wi-Fi network (for Wireless Fidelity). This network is particularly dense in urbanized areas. It should be noted that if the set of access points P1, P2, PN to the network 50 is identifiable by the device 20, only the access points having free access allow the transmission of the data towards the server 30 Hence, it is also advantageous to provide a memory 22 which stores the received data 30 in order to carry out a transmission when this is possible in the direction of the server 30.

In a variant, the wireless access network to the Internet may be the WiMax network (for Worldwide Interoperability for Microwave Access according to the English terminology). The WiMax network mainly covers areas of low urbanization. Some WiMax kiosks are free to access or accessible via a subscription depending on the country concerned. According to another variant, the system 100 in accordance with the invention may make use of one or the other of the Wi-Fi and WiMax networks. Advantageously, the device 20 is configured to transmit at least the newly stored data in its memory 22, after each storage in its memory 22 of data coming from a signal communicating to it the data relating to a new access point to the network. wireless access to the Internet. This makes it possible to update the data accessible at the server level only when a new access point to the Internet wireless access network is identified. When the object 10 is stationary, this avoids unnecessary communication between the device 20 and the server 30, energy-consuming. And when the object 10 is in motion, the system 100, for example the server 30, makes it possible to determine the geolocation of the object 10 in real time.

Alternatively, however, provision could be made for communication between the device 20 and the server 30 on a periodic basis. Advantageously, the device 20 is configured to differentiate data from mobile access points to the wireless Internet access network from other data from fixed access points to the wireless access network to the Internet. . The mobile access points to the wireless access network to the Internet are, for example, those corresponding to 3G, 4G devices or to certain cellular telephones that can operate in access point mode ("AP" mode for Access Point according to the English terminology). The fixed access points to the wireless Internet access network are typically the "boxes" found in homes, hotels, railway stations and in many shops. This differentiation can be interesting to identify the theft of an object 10.

Indeed, the server 30 can then identify the mobile access points to the wireless access network to the Internet and determine the physical addresses of the access points that do not change over time. These physical addresses then probably correspond to the access points (3G, 4G keys, cell phone, ...) of the alleged thief or his relatives 10 whose identification is facilitated. In addition, and as shown in FIG. 2, the device 20 may be configured to receive Bluetooth® identifiers of objects 01, 02,..., ON, accessible around the device 20 and therefore the object 10, the take into account in the microprocessor 22 'and save them in memory 22. For this purpose, it is necessary to provide an antenna 210 capable of operating over the frequency range of Bluetoothe if necessary, the latter being present by default on different types of objects. The microprocessor 22 'is then configured to handle this antenna 210 and the frequencies considered. The Bluetooth® identifiers are then sent from the device 20 to the server 30 with the other data, in accordance with what has been previously described in support of FIG. 1. The server 30 can then determine, over time, the Bluetooth® identifiers that do not change. These Bluetooth® identifiers probably correspond to that of the alleged thief or his relatives. Furthermore, as shown in FIG. 3, the device 20 may be configured to receive signals from GSM relays, namely RGSMi, RGSM2, RGSMN and including data relating on the one hand to the identifiers of these GSM relays and on the other hand, to the intensity of these signals 3033970 12 GSM. For this purpose, it is necessary to provide within the device 20, an antenna 220 capable of operating on the frequency range of the GSM network. The GSM network is certainly looser than the VVi-Fi network, but it allows, in case the number of MAC identifiers obtained wireless network access points 50 to the Internet is low, especially in the the case of VVi-Fi, which is less dense in non-urban areas, to obtain additional data. The microprocessor 22 'then manages all the operations related to the operation of the GSM and in particular the storage 22.

This additional data is then sent from the device 20 to the server 30 along with the other data. The server 30 can then have knowledge of the identifiers of the relay antennas of the GSM network. Management of the data from the relay antennas of the GSM network can then be carried out as described previously, namely with a dedicated database or a database 40 completed, the server 30 can in particular be used to perform the calculations necessary for geolocation via these relay antennas. It should be noted further that the signals transmitted by the access points PI P2, - - PN to a wireless access network to the Internet 20 generally include data relating to the date and time. Also, the device 20 will advantageously be configured to receive data relating to the date and time associated with the reception, by said device 20, of the signal coming from each access point PI, P2,. wireless access network to the Internet by said device 20.

These complementary data are, like the others, managed by the microprocessor 22 'and stored in memory 22. This complementary data makes it possible in particular to carry out a follow-up in time of the geolocation of the object 10. In fact, under these conditions, the system 100, for example the server 30 in one embodiment, can then reconstitute the path of the object 10 because it can receive, via the so-called access points of access to the network 3033970 13 50 wirelessly to the Internet, these data relating to the date and time of reception by the device 20. For this purpose, the system 100 will again be based on the database 40 as described above. It is then advisable to provide a memory 32 for storing these data and able to communicate with the server 30. This memory 32 will advantageously be located in the same place as the server 30. More generally, and even if it is desired to carry out only one geolocation of the object 10, without tracking the path of this object 10, the presence of such a memory 32 will be considered. The memory 32 makes it possible to store the various exchanges likely to take place with the cell phone of the legitimate user of the object 10 and / or the competent authorities likely to intervene to find the object 10. it should be noted that the server 30 may be configured to send one or more control signals to the device 20 via said at least one wireless access network 50 to the Internet. This may be the case for switching the device 20 to the access point mode of the wireless access network to the Internet when this device 20 is configured to enable it. As briefly explained above, it is conceivable to provide only one antenna 21 for the device 20. This antenna 21 then makes it possible to receive the signals coming from the different access points P1, P2, ... PN. to the network 50 of wireless access to the Internet and to issue the same data, stored in the memory 22 of the device 20 towards the server 30.

The antenna 21 will then be advantageously non-directional. It is also conceivable to provide, as shown in FIGS. 4 and 5, a plurality of antennas 21, 21 ', 21 ". At least one of these antennas 21, 21', 21" may be and directional and other directional and arranged to receive and transmit signals in distinct regions of the space. More generally, it will be possible to provide a plurality of directional antennas 21 ', 21 "arranged to receive and transmit signals in distinct regions of the space Advantageously, the regions covered by these directional antennas 21', 21 "will be complementary. The advantage of such an arrangement of directional antennas 21 ', 21 "lies in the fact that a suspected thief is often provided with a jammer and only one, so if an alleged thief approaches the The object he covets to steal with a jammer, it is likely that it only manages to scramble one and only one of these antennas 21 ', 21 "directional. The system 100 can be further improved, as shown in FIG. 5, by providing, within the device 20, a switch 23 for activating at least one of the plurality of directional antennas 21 ', 21 ". connected to the microprocessor 22 ', which manages it More specifically, the device 20 can be configured to firstly determine which of the plurality of directional antennas 21', 21 "receives the most data relating to the physical addresses. access points P1, P2, PN to the wireless Internet access network 50 and, on the other hand, to control the switch 23 on this directional antenna. This can be done in real time. Alternatively, the device 20 may be configured to control the switch 23 so as to activate the different directional antennas 21 ', 21 "periodically or randomly.

It should be noted that the system 100 according to the invention is based on existing networks. This system 100, on the other hand, requires the installation of a device 20, as previously described in its different variants, to be installed on the object 10 that one wishes to geolocate or whose track is to be followed.

This device 20 will advantageously be powered by a self-contained battery (not shown in FIGS. 1 to 6, referenced 30 in FIG. 7). The system 100 can then follow the object of the user all the time, the only limit then being given by the power supply of the device 20, in particular when the latter is powered by an autonomous battery such as a battery. Alternatively, the system 100 can track the object 10 at regular intervals. The device 20 is most often in "sleep" mode and is activated to transmit data to the server 30 only for a predetermined time (for example, one minute) at regular intervals (for example every hour). . By operating in this way, the autonomy of the device 20 is improved. In another variation, the system 100 may track the object on demand. The device 20 is therefore in "sleep" mode most of the time and becomes active only in case of suspicion of theft. For example, if the object 10 is a vehicle, its legitimate user may, in case of suspicion of theft, transmit to the server 30 a message (text or email for example) indicating that the vehicle must be followed. The server 30 then activates the device 20 so that it transmits the data that the system 100 needs to perform the geolocation. By operating in this way, the device 20 is activated only on demand and its autonomy is further improved. Once the object is found, either because the object was stolen and the alleged thief was apprehended by the authorities, or because the legitimate user has found his object, the user can also transmit the object. a message (text or e-mail, for example) to the server 30 to tell it to stop tracking the object 10. It should be noted that depending on the nature of the object 10, the system 100, and more particularly the device 20, may have some specificities.

Thus, if the object 10 is a vehicle, for example an automobile or a motorcycle, the device 20 may comprise, in addition, the following components, connected to the microprocessor 22 '- at least one means 24 for detecting the movement of the vehicle, for example an accelerometer and / or a magnetometer; and at least one means 25 for detecting the presence of starting the engine of said vehicle, for example an accelerometer and / or a microphone; the system 100, for example the device 20 or the server 30, then being configured to determine on the basis of the information provided by said detection means 24, 25 whether the vehicle has been moved engine stopped over a predetermined period of time depending on the nature of the vehicle concerned. We can refer to Figure 6. The means 24, 25, other components of the device 20, are managed by the microprocessor 22 '.

These complementary means 24, 25 are particularly advantageous for detecting an alleged "pick-up" (for motorcycles) or "plateau" theft for automobiles because in these flight configurations, the vehicle is moved and the engine is not. not started.

The movement of the vehicle can be identified by an accelerometer and the absence of start-up of the engine is detectable by the absence of vibrations perceived by the microphone. For this purpose, the microphone is chosen to capture vibrations whose frequency is lower than that of a motor at idle, namely typically frequencies below 100Hz or less. In this particular case, on the other hand, the accelerometer 24 and the microphone 25 must be continuously supplied with power. FIG. 7 is a diagram of a device 20 used in the system 100 according to the invention and with which a feasibility test Have been realised.

To perform this feasibility test, no server 30 and no database 40 has been implemented.

This device 20 comprises a microprocessor 22 ', a memory 22, a battery pack 30 (battery), two directional antennas 21', 21 ", a switch 23 for these antennas 21 ', 21" and an accelerometer 24. The microprocessor 22 'is connected to the memory 22, the switch 23 and the accelerometer 24. The switch 23 is connected to each of the two antennas 21', 21 ".This device 20 has been tested to operate at a frequency of 2.40Hz (Wi-Fi) The network 50 used for these tests is therefore the VVi-Fi network.

The antennas 21 ', 21 "were placed at 180 °, with reciprocating operation controlled by the switch The device 20 was placed on a vehicle 10 as an object and more precisely in a van formed a cage of Faraday These severe conditions are representative of a so-called "van" theft.

At start-up of the vehicle, the accelerometer 24, constantly supplied by the battery 30, detects a movement and sends a signal (Si, FIG. 7) to the microprocessor 22 'so that it leaves its "sleep" mode and thus starts operation. The device 20 is then operational and starts receiving the name of the network access point 50 VVi-Fi, the data relating to the physical address (MAC) of this access point, to the associated intensity of the access point. signal (RSS1), whether or not the access point is "free access" and the time stamp (date and time) during the movement of the vehicle 10. In FIG. 8, these various data are represented, obtained over a measurement interval of one minute during vehicle movement. The first column is the name of the access point. For a given access point, each line corresponds to the different data obtained for this access point. Thus, the second column corresponds to the MAC address of the access point, the third column to the intensity of the RSS1 signal of the access point (SSID), the fourth column to the fact that it is freely accessible. (0) or not 3033970 18 (1), the fifth column at the date and the sixth and last column at the hour provided to the nearest second. It is found that among the MAC addresses identified by the device 20 during the course of the vehicle 10, many of them are in free access (O; fourth column). It is therefore shown that it is quite feasible to transmit the data stored in the memory 22 to a server 30, which can, thanks to a database 40, provide a link between the MAC address and the location geolocation The object 10 may be for example a laptop, a vehicle, a container, a luggage, a work of art or construction equipment. Among the vehicles, there may be mentioned an automobile, a motorcycle, a scooter, a moped or in some cases use a boat. 15

Claims (20)

REVENDICATIONS1. An object geolocation system (100) (10) comprising: - at least one Internet access network (50) having a set of access points (P1, P2, ..., PN) network audit, each access point having a physical address (MAC) and being able to regularly transmit a signal comprising data relating to this physical address (MAC) and the intensity of the associated signal; a device (20) mounted on said object (10), comprising a plurality of components, among which: at least one antenna (21, 21 ', 21 ") for receiving, from each access point (P1, P2,. .., PN) to the wireless access network at! Internet within range of the device (20), at least one of said signals, at least one microprocessor (22 ') for measuring the intensity of said signal 15 and over generally manage the operation of the various components of the device (20) at least one memory (22) to record all of these data, said at least one antenna (21, 21 ', 21 ") also making it possible to transmit, 20 on the wireless Internet access network (50), a signal comprising the data stored in the memory (22) of the device (20) via access points of said network which are both within range the device (20) and free access; a server (30), remote from the device (20), which is configured on the one hand, to receive these data transmitted by said at least one antenna (21, 21 ', 21 ") via the dots network access (50) which are freely accessible and, on the other hand, transmit the data relating to the physical addresses (MAC) of the different access points (P1, P2, ..., PN) to the at least one network (50) to a database (40) providing a link between a physical address (MAC) of an access point (Pi, P2, ..., PN) of said at least one network (50) and the geolocation of this physical address (MAC); the system (100) being moreover configured to geolocate the device (20) and therefore the object (10) from data from this database (40) and intensities of the signals associated with these physical addresses. The system (100) of claim 1, wherein the device (20) is configured to transmit at least the newly stored data to its memory (22) after each storage in its memory (22) of data from a signal communicating to it the data relating to a new access point to the wireless access network to the Internet 10 The system (100) according to one of the preceding claims, wherein the device (20) is configured to differentiate data from mobile access points to the Internet access network from the Internet from other data from the points. access to the wireless access network internally. 4. System (100) according to one of the preceding claims, wherein the device (20) is configured to receive Bluetooth® identifiers accessible around the device (20) and therefore the object (10) and save them in memory (22). 5. System (100) according to one of the preceding claims, wherein the device (20) is configured to receive signals from GSM relays and having data relating to the identifiers of these GSM relays and the intensity of these signals. GSM and to store this data in memory (22). 6. System (100) according to one of the preceding claims, wherein it is the server (30), comprising one or more processors, which is configured so that the system (100) can geolocate the device (20) and therefore the object (10) from data from the database (40) and signal intensities associated with these physical addresses. 3033970 21 7. System (100) according to the preceding claim, wherein, to determine the geolocation of the object (10), the server (30) determines an area delimited by a minimum value of the intensity of the signal received by each point d access, this minimum value being common to all 5 access points (P1, P2, PN) to said at least one network (50) of wireless access to the Internet. 8. System (100) according to one of claims 1 to 6, wherein, to determine the geolocation of the object (10), the server (30) performs a calculation 10 positioning of this object (10) on the the intensity of the signal emitted by at least the two access points of the Internet access network having the highest intensities. The system (100) according to one of the preceding claims, wherein the device (20) is configured to receive data relating to the date and time associated with the reception by said device (20) of the signal from each access point (P1, P2, -, PN) to said at least one network (50) for wireless access to the Internet. 20 10. System (100) according to the preceding claim, wherein the system (100), for example the server (30), is configured to determine the path followed by the object (10), a path that can be stored in a memory ( 32). 11. System (100) according to one of the preceding claims, wherein said at least one network (50) for wireless access to the Internet is the Wi-Fi and / or WiMax network. 12. System (100) according to one of the preceding claims, wherein the device (20) comprises a non-directional antenna (21). 3033970 22 13. System (100) according to one of the preceding claims, wherein the device (20) comprises a plurality of directional antennas (21 ', 21 ") arranged to receive and transmit data in distinct regions and preferably complementary 5 14. System (100) according to the preceding claim, wherein the device comprises (20) a switch (23) for activating at least one of the plurality of directional antennas (21 ', 21 "), this switch (23) being connected for this purpose to the microprocessor (22 '). 15. System (100) according to the preceding claim, wherein the device (20) is con-figuré for one hand, determine which of the plurality of directional antennas (21, 21 ") receives the most data relating to physical addresses of the access points (Pi, P2, PN) to the wireless access network to the Internet and for the other hand, to control the switch (23) on this directional antenna. The system (100) of claim 14, wherein the device (20) is configured to control the switch (23) to activate the different directional antennas (21 ', 21 ") periodically or randomly. The system (100) according to one of the preceding claims, wherein the device (20) is configured to switch to access point mode of the wireless access network (50) to the Internet. The system (100) according to the preceding claim, wherein the device (20) is configured to automatically switch to access point mode of the wireless access network to the Internet after a predetermined period of time 30 to during which the device (20), and therefore the object (10), remained motionless. 3033970 23 The system (100) of claim 17, wherein the device (20) is configured to switch to access point mode of the wireless access network to the Internet upon receipt of a control signal from the server (30). 5 20. System (100) according to one of the preceding claims, wherein the object being a vehicle, for example an automobile or a motorcycle, the device (20) further comprises the following components, connected to the microprocessor (221). at least one means (24) for detecting the movement of the vehicle, for example an accelerometer and / or a magnetometer, and at least one means (25) for detecting the absence or presence of starting the motor of said vehicle, for example an accelerometer and / or a microphone, the system (100), preferably the device (20), being then configured to determine on the basis of the information provided by said detection means (24, 25) whether the vehicle has been moved engine stopped over a predetermined period of time depending on the nature of the vehicle concerned.