Radiant energy – Invisible radiant energy responsive electric signalling – Semiconductor system
Patent
1992-07-23
1993-12-28
Fields, Carolyn E.
Radiant energy
Invisible radiant energy responsive electric signalling
Semiconductor system
2502521, 250394, 2505061, G12B 1300, G01T 124
Patent
active
052742393
ABSTRACT:
A shielded dose calibration apparatus including one or more hand-held portable shield units containing a vessel with a radioactive sample in a shielded chamber and a calibration station for calibrating the sample in the vessel without removing the vessel from the protections of the shielded chamber. The shield units include on-board detectors for measuring the radioactivity from the sample. The calibration station may include a separate controller unit and one or more base units. To calibrate a sample, the portable shield unit is placed on a base unit, which senses the presence of the shield unit. The shield unit then communicates an identification signal and the data measured by the on-board detectors to the controller unit via the base unit. Power may also be transmitted to the shield unit via the base unit, avoiding the need for an on-board power source. In another embodiment the portable shield unit may be entirely self-contained, including an on-board power source, detectors, processing electronics, and readout mechanism.
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Lane Stephen M.
Prussin Stanley G.
Spracklen Howard
Fields Carolyn E.
Sunol Technologies, Inc.
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