RADIOMETRIC WARNING DEVICE Russian patent published in 2006 - IPC G01T1/17 

FIELD: recording ionizing radiation.

SUBSTANCE: proposed devices designed for warning about sources of ionizing radiation whose intensity exceeds specified radiation background level has series-connected ionizing radiation detector and scaling circuit whose output is connected to first inputs of two AND gates, and timer. Second input of first AND gate is connected through inverter to recorder output and its output, to recorder input. Output of second AND gate is connected to pulse counter input. Timer output is connected to register and pulse counter zero setting buses. Device also has additional AND gate, inverter, frequency divider, and two high and low level indicators. First input of additional AND gate is connected to scaling circuit output, second one, to register output and to low level indicator, and third input, to frequency divider output through inverter, to second AND gate input, and to high level indicator. Frequency divider zero setting bus is connected to timer output and input, to additional AND gate output.

EFFECT: enhanced reliability of warning device.

1 cl, 2 dwg