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Title: Method and apparatus for reading free falling dosimeter punchcodes

Abstract

A punchcode reader is provided for reading data encoded in a punchcode hole array on a dosimeter. The dosimeter falls through a passage in the reader containing photosensor detectors disposed along the passage which provide output signals to a microprocessor. The signals are processed to determine the orientation of the dosimeter in the reader, the location and state of punchcode holes in a two row array thereby decoding the encoded data. Multiple rate of fall calculations are made, and if appropriate matching of the punchcode array is not obtained in three tries, an error signal is output to the operator. The punchcode reader also provides for storage of data from multiple dosimeters passed through the reader, and for the output of decoded data to an external display or a computer for further processing. 8 figs.

Inventors:
Issue Date:
OSTI Identifier:
7310303
Patent Number(s):
5173595 A
Application Number:
PPN: US 7-560667
Assignee:
Dept. of Energy, Washington, DC (United States) PTO; EDB-94-090407
DOE Contract Number:  
AC04-76DP03533
Resource Type:
Patent
Resource Relation:
Patent File Date: 31 Jul 1990
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; DOSEMETERS; READOUT SYSTEMS; DESIGN; DATA PROCESSING; PHOTODETECTORS; MEASURING INSTRUMENTS; PROCESSING; 440102* - Radiation Instrumentation- Radiation Dosemeters

Citation Formats

Langsted, J.M. Method and apparatus for reading free falling dosimeter punchcodes. United States: N. p., 1992. Web.
Langsted, J.M. Method and apparatus for reading free falling dosimeter punchcodes. United States.
Langsted, J.M. Tue . "Method and apparatus for reading free falling dosimeter punchcodes". United States.
@article{osti_7310303,
title = {Method and apparatus for reading free falling dosimeter punchcodes},
author = {Langsted, J.M.},
abstractNote = {A punchcode reader is provided for reading data encoded in a punchcode hole array on a dosimeter. The dosimeter falls through a passage in the reader containing photosensor detectors disposed along the passage which provide output signals to a microprocessor. The signals are processed to determine the orientation of the dosimeter in the reader, the location and state of punchcode holes in a two row array thereby decoding the encoded data. Multiple rate of fall calculations are made, and if appropriate matching of the punchcode array is not obtained in three tries, an error signal is output to the operator. The punchcode reader also provides for storage of data from multiple dosimeters passed through the reader, and for the output of decoded data to an external display or a computer for further processing. 8 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {12}
}