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US 6,664,534 B2Granted
Tilt sensing device and method for its operation
AssigneePharmacia Corporation
InventorsBirger Hjertman, Anders Holte
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AssigneePharmacia Corporation
InventorsBirger Hjertman, Anders Holte
Estimating the term…
A tilt sensing device and method for its operation, the device being of the type comprising a) a housing, b) a radiation transmitter and a radiation receiver arranged in or at the housing to form a beam path therebetween, c) a radiation obstructing or deflecting body movable in relation to the beam path and d) a rest surface for the body defining at least two possible rest positions for the body relative the beam path between which rest positions the body can move by gravity at defined tilt angles for the device and which rest positions are selected to give a detectable output difference from the radiation receiver depending on which of the rest positions is occupied by the body. The size of the movable body, expressed as the diameter of a sphere of corresponding volume, is less than 10 mm. Operation of the device includes monitoring the output from the receiver to obtain an amplitude versus time function and processing data from the function to obtain a modified signal.
A method for operating a tilt sensing device which comprises a radiation transmitter and a radiation receiver arranged to form a beam path therebetween and a body movable by gravity in relation to the beam path to cause an alteration of the beam in a manner detectable by the receiver, the method comprising the steps of monitoring an output from the receiver to obtain an amplitude versus time function and processing data from the function to obtain a modified signal.
A method for operating a tilt sensing device which comprises a radiation transmitter and a radiation receiver arranged to form a beam path there between and a body movable by gravity in relation to the beam path to cause an alteration of the beam in a manner detectable by the receiver, the method comprising the steps of:
A method for operating a tilt sensing device which comprises a radiation transmitter and a radiation receiver arranged to form a beam path there between and a body movable by gravity in relation to the beam path to cause an alteration of the beam in a manner detectable by the receiver, the method comprising the steps of:
The method for operating a tilt sensing device which comprises a radiation transmitter and a radiation receiver arranged to form a beam path there between and a body movable by gravity in relation to the beam path to cause an alteration of the beam in a manner detectable by the receiver, the method comprising the steps of:
Dependencies are inferred from the claim text.