Personal radiation dosimeter
US4605858A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 9, 1984 |
| Grant date | Aug 12, 1986 |
| Priority date | — |
| Expiry date | Nov 9, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01T1/026
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A radiation dosimeter includes a plurality of air wall type ionization chambers for radiation detection. Each ionization chamber is connected in series with a selectively actuable switching element under the control of a data processor. The ionization chamber switching element pairs are connected in parallel and the entire group is further connected in series with a load resistor and a source of known potential. A voltage threshold detector is connected across the load resistor and is effective to develop a signal proportional to the peak potential appearing across the load resistor when each of the switching elements is actuated to recharge the various ionization chambers. The voltage peak is proportional to the radiation rate. An A/D converter converts the output of the voltage threshold detector into useful data for a data processor which performs the functions of process control and calculation of radiation rate and cumulative dosage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.