11
1.4 Design and theory of operation
1.4.1 The dosimeter comprises the following main blocks and modules:
-
radiation detector;
-
microprocessor;
-
LCD;
-
secondary power supply;
-
IR-transceiver;
-
non-volatile memory.
The block diagram of the dosimeter is shown in Figure 1.1.
Figure 1.1
– Block diagram of the dosimeter
A Geiger-Muller tube with a filter for spatial-energy formation of sensitivity, which
converts photon radiation quanta to electric pulses, is used as a radiation detector. The
detector has a high-voltage power supply.
Backlight
driver
Quartz
generator
Microprocessor
IR-
transceiver
Battery
1.5 V
Secondary
power supply
Radiation
detector
DAC
of temperature
compensaton
LCD
RAM
High voltage
power supply
Control
buttons
Alarm
(audible, vibro
and light)
Содержание PM1621
Страница 1: ...X RAY AND GAMMA RADIATION PERSONAL DOSIMETERS 1621 Models 1621 1621 1621 1621 OPERATING MANUAL...
Страница 13: ...13 Figure 1 2 General overview of the dosimeter...
Страница 14: ...14 Figure 1 3 Demounting the clip from 1621 and 1621...
Страница 21: ...21 Figure 2 2 Select the 1621 1621 dosimeter operating indication mode...
Страница 22: ...22 Figure 2 3 Setting the DE threshold values...
Страница 23: ...23 Figure 2 4 Setting the DER threshold values...
Страница 24: ...24 Figure 2 5 Indication of audio alarm state on off adjustment of sound volume of 1621 1621 dosimeter...
Страница 35: ...35 ATTACHMENT C reference OVERALL DIMENSIONS EFFECTIVE CENTER OF THE DOSIMETER DETECTOR Figure C 1...
