System and method for locating an object
AssigneeBlinksight
InventorsMatthieu Mutz, Stéphane Mutz
Life of this patent
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Abstract
The present invention relates to a system for locating a mobile element, characterized in that it comprises: at least one beacon emitting radio messages; at least one relay capable of emitting a second message with a known lag following the receipt of a first message originating from said at least one beacon; at least one sensor capable of measuring in a local time base the instants of arrival of the messages originating from said at least one beacon and at least one relay; 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, a relay or a sensor.
Claims19
A system for locating a mobile element inside an enclosure, characterized in that it comprises:
- at least one beacon capable of transmitting at least one first radio message inside the enclosure;
- at least one relay capable of transmitting a second message inside the enclosure with a known time lag following receiving the first message coming from said at least one beacon;
- at least one sensor capable of measuring in a local time base the times of arrival of the messages coming from said at least one beacon and at least one relay inside the enclosure;
- at least one position computer, capable of determining the position of a mobile element, which is one of the beacon, the relay and the sensor, from at least the positions and time of arrival information, known by the computer, of others of the beacon, the relay and the sensor;
- the beacon having at least one radio transmitter with Ultra-WideBand pulses for transmitting the first message,
- the relay having at least one radio receiver with Ultra-WideBand pulses for receiving the first message and a radio transmitter with Ultra-WideBand pulses for transmitting the second message,
- the sensor having at least one radio receiver of the type with Ultra-WideBand pulses for receiving the first message and the second message.
A method for locating a mobile element inside an enclosure, characterized in that it comprises steps of:
- (a) transmitting, by at least one beacon, at least one first message inside the enclosure;
- (b) receiving said first message by at least one relay inside the enclosure and transmitting, inside the enclosure, a second message with a known time lag relative to receiving the first message by said at least one relay;
- (c) receiving, inside the enclosure, said messages by at least one sensor and measuring, in a local time base, the times of arrival of the messages coming from said at least one beacon and at least one relay inside the enclosure;
- (d) determination, by a position computer of the position of the mobile element carrying the beacon, the relay or the sensor, from at least the positions and time of arrival information, known by the computer, of others of the beacon, the relay and the sensor,
- the beacon having at least one radio transmitter with Ultra-WideBand pulses for transmitting the first message,
- the relay having at least one radio receiver with Ultra-WideBand pulses for receiving the first message and a radio transmitter with Ultra-WideBand pulses for transmitting the second message,
- the sensor having at least one radio receiver of the type with Ultra-WideBand pulses for receiving the first message and the second message.
Dependencies are inferred from the claim text.