G - Physics – 01 – B
Patent
G - Physics
01
B
358/6, 358/7
G01B 21/08 (2006.01) G01B 11/06 (2006.01) G01B 15/02 (2006.01) G01T 1/15 (2006.01) G01T 1/208 (2006.01)
Patent
CA 1265875
ABSTRACT A system and related method for sensing a parameter of a medium by means of radiation attenuation, the system including a radiation source for emitting radiation that will be attenuated as a function of the parameter upon passage through the medium and a radiation detector operatively positioned to detect the radiation that will be attenuated as aforesaid, and the system being further characterized by the detector comprising a sintillator probe for producing an electrical current output proportionally representative of detected radiation, a current integrator for continuously integrating the electrical current output of the sintillator probe, the current integrator having an input for receiving the electrical current output of the scintillator probe and an output for producing an electrical output representative of the integral of current received at the input thereof, a charge injector for supplying to the input of the current integrator current pulses of predetermined total charge and of opposite polarity relative to the electrical current output of the scintillator probe in response to the output of the current integrator having a predetermined characteristic, and a detector output for generating count signals at a frequency proportionally representative of the frequency at which the current pulses are supplied to the input of the current integrator by the charge injector.
526891
Sicking David H.
Tawil Riad A.
Osler Hoskin & Harcourt Llp
Solon Technologies Inc.
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