The invention relates to a device for transmitting an ultra-wideband-type signal, the signal including, one after the other temporally, a synchronization header and a data payload field. The transmission device includes a first generator to generate first synchronization header symbols and a third generator to generate third data payload symbols. The transmission device further includes a time sequencing device for sequencing the first and third symbols in a sequence of symbols, successively including the first symbols in the synchronization header and the third symbols in the data payload field. The transmission device further includes at least one antenna, capable of transmitting the signal including the sequence. The transmission device additionally includes a fourth generator to generate at least one fourth secret symbol, the time sequencing device being configured to insert the at least one fourth secret symbol into the sequence of symbols.
G01S 5/14 - Determining absolute distances from a plurality of spaced points of known location
G01S 5/02 - Position-fixing by co-ordinating two or more direction or position-line determinationsPosition-fixing by co-ordinating two or more distance determinations using radio waves
2.
DEVICE AND METHOD FOR RELATIVE LOCATION OF AT LEAST THREE NODES
The invention relates to a device for relative location, comprising at least three nodes remote from one another. According to the invention, the node (A) comprises a unit (AER), capable of triggering an exchange of messages (M1, M2) to go back and forth with a second unit (BER) present in node (B), the node (A) comprising a unit (AC) for calculating a time-of-flight (Tab) of the message (M1, M2), the unit (AER) being capable of transmitting a message (M5) containing a piece of information (INF1) indicating the time-of-flight (Tab), the node (C) comprising a unit (CER), capable of triggering an exchange of messages (M3, M4) with the unit (AER) and a unit (CC) for calculating a time-of-flight (Tac) of the message (M3, M4), the unit (CER) being capable of receiving messages (M1, M2, M5), the node (C) comprising a time measurement unit (CMT) for measuring times of receipt (T1, T2) of the messages (M1, M2), the unit (CC) being capable of calculating a time-of-flight (Tbc) of the message (M2) from node (B) to node (C) on the basis of times (T1, T2), time-of-flight (Tac) and the piece of information (INF1), contained in the message (M5).
G01S 5/02 - Position-fixing by co-ordinating two or more direction or position-line determinationsPosition-fixing by co-ordinating two or more distance determinations using radio waves
G01S 5/00 - Position-fixing by co-ordinating two or more direction or position-line determinationsPosition-fixing by co-ordinating two or more distance determinations
G01S 5/14 - Determining absolute distances from a plurality of spaced points of known location
3.
DEVICES AND METHODS FOR TRANSMITTING AND RECEIVING, SIGNAL TRANSMITTER-RECEIVER
The invention relates to a device for transmitting a signal (100) of the ultra-broadband type, the signal (100) comprising one after another temporally, a synchronization header (SHR, PR, SFD) and a useful-data field (PSDU), the transmitting device (1, 1') comprising a first generator (11) for generating first synchronization header symbols (SPR, SSFD) and a third generator (12) for generating third useful-data symbols (SDU), the transmitting device (1, 1') comprising a temporal sequencing device (14) for sequencing the first and third symbols (SPR, SSFD, SPHR, SDU) into a sequence (SEQ) of symbols, successively comprising the first symbols (SPR, SSFD) in the synchronisation header (SHR, PR, SFD) and the third symbols (SDU) in the useful-data field (PSDU), the transmitting device (1, 1') comprising at least one antenna(3), able to transmit the signal (100) comprising the sequence (SEQ). The invention is characterized in that the transmitting device (1, 1') furthermore comprises a fourth generator (13) for generating at least one fourth secret symbol (M), the temporal sequencing device (14) being configured to insert the at least one fourth secret symbol (M) into the sequence (SEQ) of symbols.
G01S 5/02 - Position-fixing by co-ordinating two or more direction or position-line determinationsPosition-fixing by co-ordinating two or more distance determinations using radio waves
H04L 9/32 - Arrangements for secret or secure communicationsNetwork security protocols including means for verifying the identity or authority of a user of the system
G01S 13/76 - Systems using reradiation of radio waves, e.g. secondary radar systemsAnalogous systems wherein pulse-type signals are transmitted
4.
Device and method for location of an RFID transmitter
A device for locating a remote RFID transmitter in an environment providing separate paths of propagation of a wirelessly transmitted ultra-wide band signal. The receiver of the device has a module for estimating the impulse response of the plurality of paths of the first channel defined by a first antenna and a module for estimating the impulse response of the plurality of paths of the second channel defined by the second antenna, a module for calculating a plurality of argument differences between each component of the impulse response and each component of the impulse response for the plurality of paths respectively. The device further comprises a module for converting the plurality of argument differences into a plurality of arrival angles of the plurality of paths, a module for determining a location of the transmitter from the plurality of arrival angles.
G01S 3/74 - Multi-channel systems specially adapted for direction-finding, i.e. having a single antenna system capable of giving simultaneous indications of the directions of different signals
G06K 7/10 - Methods or arrangements for sensing record carriers by electromagnetic radiation, e.g. optical sensingMethods or arrangements for sensing record carriers by corpuscular radiation
H04B 7/08 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
The present invention relates to a system for locating a mobile element, characterized in that it comprises: - at least one beacon (1) emitting radio messages; - at least one relay (2) capable of emitting a second message with a known lag following the receipt of a first message originating from said at least one beacon (1); - at least one sensor (3) capable of measuring in a local time base the instants of arrival of the messages originating from said at least one beacon (1) and at least one relay (2); - at least one position computer, that can be central or onboard each sensor, capable of determining the position of a mobile element on the basis of the arrival time information; the mobile element being able to be a beacon (1), a relay (2) or a sensor (3).
The invention relates to a wireless information communicating terminal (B), comprising a facility (11) for providing a first item of information (11) to the outside, a first receiver (B1) able to receive a first signal (S1) containing first data (D1) according to a first wireless determined communication channel, a control unit (12) for generating the first item of information (11) to be dispatched to the providing facility (11) as a function of the first data (D1) received by the first receiver (B1). The invention is characterized in that the terminal (B) furthermore comprises at least one second sender (B2) able to send a second signal (S2) according to a second wireless determined communication channel of ultra-wide band type.
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
G06K 19/077 - Constructional details, e.g. mounting of circuits in the carrier
G06K 7/00 - Methods or arrangements for sensing record carriers
G06K 17/00 - Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups , e.g. automatic card files incorporating conveying and reading operations
7.
DEVICE AND METHOD FOR CONTROLLING ACCESS TO AT LEAST ONE MACHINE
The invention relates to a device for controlling access to a machine (300), comprising a portable object (100) having a signal transmission member (S1) and a device (200) for locking and unlocking a machine. According to the invention, the member for controlling the device (200) is capable of triggering, once the second transceiver of the device has received the signal (S1), the transmission of a signal (S2) to a wireless radio receiver supported by the portable object (100), and comprises a control member for triggering, when the wireless radio receiver has received the second signal (S2), the transmission of a signal (S3), the control member being connected to a means for computing a distance between the portable object (100) and the device (200) using the signals (S2, S3) and/or (S1, S2), the portable object (100) comprising a member for independently powering the transmission member, the receiver and the control member thereof. The device (200) comprises a ninth means for computing an incoming angle (ANG1, ANG3) of the first signal (S1) and/or the third signal (S3) such as to trigger, when the angle (ANG1, ANG3) is within a given angular range and when the distance is lower than a predetermined value, the unlocking of the machine and to trigger, when the distance is higher than a predetermined value, the locking of the machine.
The invention relates to a device (100) for detecting the handling of an object, comprising a deformable enclosure (1), to which a sensor (2, 4, 7, 9, 11, 13) sensing gripping of objects and at least one wireless radio transmitter (14) are fastened, the sensor (2, 4, 7, 9, 11, 13) being able to provide one or the other from among a first signal detecting gripping of an object and a second signal indicating that no gripping of an object has been detected. The invention is characterized in that the transmitter (14) includes first wireless radio transmission means (141) for transmitting a third signal making it possible to determine the location of the enclosure to a receiver (20, 21, 22, 23) remote from the deformable enclosure (1), as well as second wireless radio transmission means (141) for transmitting the first or second signal to the receiver (20, 21, 22, 23).
B07C 7/04 - Apparatus or accessories for hand picking
G01S 5/02 - Position-fixing by co-ordinating two or more direction or position-line determinationsPosition-fixing by co-ordinating two or more distance determinations using radio waves
G06Q 50/28 - Logistics, e.g. warehousing, loading, distribution or shipping
G06K 7/10 - Methods or arrangements for sensing record carriers by electromagnetic radiation, e.g. optical sensingMethods or arrangements for sensing record carriers by corpuscular radiation
9.
DEVICE AND METHOD FOR LOCATING AN RFID TRANSMITTER
The invention concerns a device for locating a remote RFID transmitter in an environment providing separate paths of propagation of a wirelessly transmitted ultra-wide band signal. The receiver (100) of the device has a module (14A) for estimating the impulse response (HA) of the plurality of paths of the first channel (A) defined by a first antenna (10A) and a module (14B) for estimating the impulse response (HB) of the plurality of paths of the second channel (B) defined by the second antenna (10B), a module (162) for calculating a plurality of argument differences between each component of the impulse response (HA) and each component of the impulse response (HB) for the plurality of paths respectively. The device further comprises a module (17) for converting the plurality of argument differences into a plurality of arrival angles (θi) of the plurality of paths, a module (18) for determining a location of the transmitter from the plurality of arrival angles (θi).
G01S 3/74 - Multi-channel systems specially adapted for direction-finding, i.e. having a single antenna system capable of giving simultaneous indications of the directions of different signals
H04B 7/08 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
patents
