Radiation detector power management for portable/handheld applications
AssigneeGeneral Electric Company
InventorsYanfeng Du, Naresh Kesavan Rao, Brian David Yanoff, Wen Li
Life of this patent
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Abstract
A radiation detector includes at least one multiple channel pixelated detector driven via a plurality of pixelated anode electrodes and at least one planar cathode electrode. Each detector is configured to reduce the number of active pixelated anode electrodes until a rate of events detected via at least one corresponding planar cathode electrode exceeds a preset threshold above a background count rate within a predetermined time period.
Claims22
A method of radiation detector power management comprising:
- providing a radiation detector with a plurality of pixellated anode electrodes and at least one planar cathode electrode;
- providing continuous full power to the at least one planar cathode electrode;
- and
- maintaining all pixellated anode electrodes in an unpowered or low power monitor mode until a rate of events detected via the at least one planar cathode electrode exceeds a preset threshold above a background count rate within a predetermined time period;
- and
- providing full power to the pixellated anode electrodes when the rate of events detected via at least one planar cathode electrode exceeds the preset threshold within the predetermined time period, such that the ratio of anode electrode on time to cathode electrode on time is reduced during a monitor mode.
A method of radiation detector power management comprising:
- providing a radiation detector with a plurality of pixellated anode electrodes and at least one planar cathode electrode;
- and
- reducing the number of active pixellated anode electrodes until a rate of events detected via at least one planar cathode electrode exceeds a preset threshold above a background count rate within a predetermined time period;
- and
- increasing the number of active pixellated anode electrodes when the rate of events detected via at least one planar cathode electrode exceeds the preset threshold within the predetermined time period, such that the ratio of anode electrode on time to cathode electrode on time causes a corresponding reduction in the number of active electrode channels when the rate of events detected via at least one planar cathode electrode does not exceed the preset threshold within the predetermined time period.
A radiation detector comprising at least one multiple channel pixellated detector driven via a plurality of pixellated anode electrodes and at least one planar cathode electrode, wherein each detector is configured to reduce the number of active pixellated anode electrodes until a rate of events detected via at least one corresponding planar cathode electrode exceeds a preset threshold above a background count rate within a predetermined time period.
A radiation detector comprising at least one multiple channel pixellated detector driven via a plurality of pixellated anode electrodes and at least one planar cathode electrode, wherein each detector is configured to provide continuous full power to at least one corresponding planar cathode electrode, and is further configured to maintain all corresponding pixellated anode electrodes in an unpowered monitor mode until a rate of events detected via at least one corresponding planar cathode electrode exceeds a preset threshold above a background count rate within a predetermined time period.
Dependencies are inferred from the claim text.