Dead-time compensation for a logarithmic display rate meter

Patent · Mon Oct 05 04:00:00 EDT 1987

OSTI ID:6866672

Larson, J A; Krueger, F P

An improved circuit is provided for application to a radiation survey meter that uses a detector that is subject to dead time. The circuit compensates for dead time over a wide range of count rates by producing a dead-time pulse for each detected event, a live-time pulse that spans the interval between dead-time pulses, and circuits that average the value of these pulses over time. The logarithm of each of these values is obtained and the logarithms are subtracted to provide a signal that is proportional to a count rate that is corrected for the effects of dead time. The circuit produces a meter indication and is also capable of producing an audible indication of detected events. 5 figs.

• Research Organization: Fermi National Accelerator Lab., Batavia, IL (USA)
• DOE Contract Number: AC02-76CH03000
• Assignee: TIC; EDB-88-179241
• Patent Number(s): PATENTS-US-A6104029
• OSTI ID: 6866672
• Country of Publication: United States
• Language: English

Related Subjects

440102* -- Radiation Instrumentation-- Radiation Dosemeters
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
CORRECTIONS
COUNTING RATEMETERS
DEAD TIME
DESIGN
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
EQUIPMENT
INVENTIONS
LOGARITHMIC RATEMETERS
TIMING PROPERTIES