Back to results
US 7,352,652 B2Granted
Ultrasonic tracking and locating system
AssigneeSonitor Technologies AS
InventorsSverre Holm, Rune Holm, Svein Rostad
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeSonitor Technologies AS
InventorsSverre Holm, Rune Holm, Svein Rostad
Estimating the term…
The invention relates to a method and a system for monitoring and position determination of objects and/or living beings within an area, such as, e.g. a room in a building. The system comprises a plurality of electronic units, called identification tags, which are attached to the objects that have to be monitored. Each identification tag has its own identification code (ID code) and is equipped with an ultrasonic transmitter, radio transmitter and radio receiver. The ultrasonic signals are received by one or more master and slave units which calculate transit time differences of ultrasonic pulses. This information together with the identification tags' ID code, identification of the room in which it is located, and any additional information are transmitted to a central processing unit which calculates the identification tag's position and presents it to a user of the system.
An identification tag for use in a system for determining the position of the identification tag, which may be in motion in a room in a building or other areas to be monitored, comprising an ultrasonic transducer connected to a transmitter adapted to transmit ultrasonic signals, together with a radio transmitter and radio receiver connected to an antenna for transmitting radio signals containing the identity of the identification tag, the ultrasonic transducer and radio transmitter being arranged to transmit at preset intervals or in response to the tag being set in motion or exposed to light.
A method of determining the position of a tag comprising the step of:
An identification tag for use in a system for determining the position of the tag, wherein the tag is arranged to transmit ultrasonic and radio signals simultaneously at preset intervals or in response to being set in motion or exposed to light.
Dependencies are inferred from the claim text.