PERSONAL DETECTOR OF ULTRA-VIOLET RADIATION FOR UV-B AREA

摘要

The device is formed by a input filter (1), fitted behind which is a light radiation sensor (3), whose output is connected with an amplifier (4). The input filter (1) has a transmissivity for wavelengths in the area of 250 to 320nm and between its output and the input of the light radiation sensor (3) there is a light converter (2), formed by a layer of luminophore. The output of the amplifier (4) is connected to the first input of the comparator (6), whose output is connected with the input of the signalisation circuit (7). Connected to the second input of the comparator (6) is the output of the source (5) of reference signal, whose input is connected up to the output of the second amplifier (9) which has an input connected up to the output of the second light radiation sensor. The second light radiation sensor (8) is located via its input opposite the input filter (1), away from the light converter (2).IMAGE