Patent ID: 7629580
Filing Date: 2009-12-08
Classification: G01T

Abstract:
1. A personal radiation monitor, comprising: a processor responsive to a radiation detector; said radiation detector configured to produce real time radiation exposure data; said processor configured for calculating one or more characteristics of an individual's radiation exposure; said processor further configured to continuously recalculate said radiation exposure data to update the one or more radiation exposure characteristics; and a display responsive to information provided by said processor, said display adapted to display at least one of said or more radiation exposure characteristics as a primary signal from said processor; said processor further configured to transmit a secondary signal to said individual; said secondary signal correlating to a range of values of one of said one or more radiation exposure characteristics; wherein at least a portion of said display is configured to change color upon one of said one or more radiation exposure characteristics exceeding a threshold limit outside said range of values; wherein said display is configured to illuminate a first color upon a radiation exposure characteristic falling within a first range of values, and a second color upon a radiation exposure characteristic falling within a second range of values; wherein said one or more radiation exposure characteristics further comprise a stay time based on the individual's maximum permissible radiation dose limit; wherein said processor is further configured for periodically recalculating said stay time; wherein update frequency of the recalculation is a function of one or more of the radiation exposure characteristics; wherein said processor is configured to output said stay time to the display at a display time interval; and wherein said display time interval locks the value of the display for a specified period of time.