Landauer, Incorporated

Other

R Craig Yoder

Mark S Akselrod

Yoshikazu Tatsumi

Tse-Min Lo

Daniel John Valentino

Vasiliy V Fomenko

Kent J Dillin

David F Johnson

James R Thistlethwaite, Iii

Mark J Guttag

Gleb Akselrod

Robert M Greaney

Daniel J Valentino

James R Thistlethwaite Iii

Described is a radiation dosimeter including multiple sensor devices (including one or more passive integrating electronic radiation sensor, a MEMS accelerometers, a wireless transmitters and, optionally, a GPS, a thermistor, or other chemical, biological or EMF sensors) and a computer program for the simultaneous detection and wireless transmission of ionizing radiation, motion and global position for use in occupational and environmental dosimetry. The described dosimeter utilizes new processes and algorithms to create a self-contained, passive, integrating dosimeter. Furthermore, disclosed embodiments provide the use of MEMS and nanotechnology manufacturing techniques to encapsulate individual ionizing radiation sensor elements within a radiation attenuating material that provides a 'filtration bubble' around the sensor element, the use of multiple attenuating materials (filters) around multiple sensor elements, and the use of a software algorithm to discriminate between different types of ionizing radiation and different radiation energy.

Wireless, motion and position-sensing, integrating radiation sensor for occupational and environmental dosimetry

Described are a method and apparatus for determining based on motion data when an individual wearing a dosimeter is active. Also described are a method and apparatus for determining based on motion data whether an individual was wearing a dosimeter when the dosimeter was exposed to radiation. Also described are a method and apparatus for determining based on motion data whether a dosimeter was in a particular location when the dosimeter was exposed to radiation. Also described are a method and apparatus for determining based on motion data where on the body of an individual the individual was wearing a dosimeter when the dosimeter was exposed to radiation. Also described are a method and apparatus for determining based on motion data the probability that an individual is wearing a dosimeter that is assigned to the individual.

System for wireless, motion and position-sensing, integrating radiation sensor and energy harvester for occupational and environmental dosimetry

Described is device comprising dosimeter for measuring one or more doses of radiation; and an RFID tag comprising an antenna for communicating with an RFID tag reader and non-volatile memory for storing data therein.

Dosimeter with RFID tag

An optically stimulated luminescence (OSL) sensor is provided that has a reflective backing for improving the efficiency of exposing an optically stimulated luminescence material (OSLM) of the OSL sensor to stimulation light and for increasing the efficiency of detecting luminescent light emitted by the OSLM.

OSL sensor having a reflective backing

System for motion and activity correlation with dose for occupational and environmental dosimetry

An apparatus comprising: a radiation sensor having one or more radiation sensors and an on-board power harvester.

Energy harvester for wireless, motion and position-sensing, integrating radiation sensor for occupational and environmental dosimetry

Described is a portable dosimeter reader that is small in size and light in weight.

Power system for dosimeter reader

Wireless, motion and position-sensing, integrating radiation occupational and environmental dosimetry

Described is a method comprising the following steps: (a) moving a selected optically stimulated luminescence (OSL) sensor of two or OSL sensors mounted on a dosimeter sled to a reading position for an OSL reader; (b) reading the selected OSL sensor at the reading position using the OSL reader to measure a radiation dosage to which a dosimeter in which the dosimeter sled has been mounted has been exposed; and (c) repeating steps (a) and (b) for each of the two or more OSL sensors, wherein each OSL sensor comprises an optically stimulated luminescent material (OSLM) mounted in one or more cylindrical cup-shaped energy compensating filters, and wherein the dosimeter sled is part of a dosimeter.

Reading mechanism for dosimeter

Described is an optical system for a dosimeter reader having reduced sensitivity to vibration and motion.

Optical system for dosimeter reader

Described is a device comprising a dosimeter reader including an RFID tag reader for retrieving and/or updating all or a portion of the data stored in the non-volatile memory of an RFID tag on a dosimeter sled that is part of a radiation dosimeter. Also described is a method retrieving and/or updating the data stored in the non-volatile memory of the RFID tag.

Data storage mechanism and communication mechanism for portable dosimeter

A portable dosimeter reader device includes an optically stimulated luminescence (OSL) reader for reading one or more OSL sensors of a dosimeter sled; a sled slider that is driven by a sled slider motor to position in turn each of the one or more OSL sensors of the dosimeter sled at a reading position where the OSL reader reads each respective OSL sensor; a display for displaying information relating to reading the one or more OSL sensors; and a battery compartment for one or more batteries, wherein the OSL reader includes an LED light source, wherein the battery compartment is electrically connected to the OSL reader, the sled slider motor and the display, and wherein the one or more batteries provide all of the power required for operating the OSL reader, the sled slider motor and the display.

Growing community of inventors

Crown Point, IN, United States of America

R Craig Yoder