Method and apparatus for determining wirelessly the position and/or orientation of an object
AssigneeSiemens Aktiengesellschaft
InventorFranz Dollinger
Life of this patent
Estimating the term…
Abstract
A method and device for determining wirelessly at least one object (7) position and/or orientation. An electromagnetic interrogation signal is transmitted via radio signal from an interrogating station (14). Detecting elements (1-3), located on the object (7) and storing power, individually modulate the recorded interrogation signal and forward it, as coded response signals, to the interrogating station (14). There, the position and/or orientation of the object (7) is/are determined from time interval values and/or phase values of each response signal.
Claims17
A method for wireless determination of at least one of position and orientation of at least one object, comprising:
- transmitting an electromagnetic checking signal from a specific transmission location to the object;
- modulating the checking signal with passive sensor elements respectively differently at a number of different points of the object;
- sending back the modulated checking signal from the sensor elements as respective differently coded response signals;
- and
- determining the at least one of the position and the orientation of the object taking into account at least one of delay times and phase differences between the response signals from the sensor elements.
An apparatus for wirelessly determining at least one of position and orientation of at least one object, comprising:
- a checking device that transmits checking signals;
- an evaluation device that evaluates response signals in order to determine the at least one of the position and the orientation;
- and
- a sensor device provided on the object and having a plurality of passive sensor elements, which are coupled to antennas that are arranged at mutually different locations on the object, and which send response signals in accordance with the checking signals;
- wherein the sensor elements comprise individual modulation devices that produce the respective coded response signals in response to the checking signals;
- and
- wherein said evaluation device evaluates at least one of delay times and phase differences between the response signals from the sensor elements in order to determine the at least one of the position and the orientation.
Apparatus comprising:
- means for transmitting an electromagnetic signal from a transmission location to an object;
- means for modulating the signal at a plurality of locations on the object to produce a plurality of respective modulated signals;
- means for transmitting the respective modulated signals;
- and
- an evaluation device configured to calculate positioning of the object from differences between the respective modulated signals.
Apparatus comprising:
- a transmitter of an electromagnetic signal from a transmission location to an object;
- a plurality of passive sensor elements provided at predetermined locations of the object and converting the electromagnetic signal into a plurality of respective, mutually distinct response signals;
- and
- an evaluation device configured to calculate positioning of the passive sensor elements from the respective, mutually distinct response signals.
Dependencies are inferred from the claim text.