Device for measuring quantity of personal radioactive rays

Abstract

The invention discloses a device for measuring quantity of personal radioactive rays. The device comprises a shell and a circuit board arranged in the shell, wherein, a G-M (Geiger-Muller) counter tube window is arranged at the side part of the shell; the circuit board comprises a singlechip, a liquid crystal display (LCD), a display driver, a G-M counter tube and a key switch; the output terminal of a step-up transformer is electrically connected with the input terminal of a rectifying and filtering circuit; the output terminal of the rectifying and filtering circuit is electrically connected with one end of the G-M counter tube; the other end of the G-M counter tube is electrically connected with the positive electrode of a third diode; the negative electrode of the third diode is electrically connected with one end of a third capacitor; the other end of the third capacitor is electrically connected with the base electrode of a triode; a fourth capacitor is electrically connected with the SCM; an alarm indication circuit comprises a light-emitting diode (LED) and a buzzer which are connected in parallel; the parallel circuit for the LED and the buzzer is electrically connected with the singlechip; and the G-M counter tube window is positioned outside the middle part of the G-M counter tube. The device disclosed by the invention has the advantages of high sensitivity and wide measurement range.

Description

technical field [0001] The invention belongs to the technical field of nuclear radiation detection, and in particular relates to a radiation dosimetry device which is convenient for personal carrying. Background technique [0002] With the development of society and the application of nuclear technology, it has brought infinite vitality and happiness to human society, but it has also brought disaster and panic to human society. In particular, the nuclear leak in Japan has made all human beings pay close attention to radioactive substances. As a result, various personal radiation dose detection instruments have been introduced in the society, but generally there is a low sensitivity that can only measure up to 0.1 microsv. [0003] The current personal radiation dose detection instrument, because the GM counter tube is located in the casing, is a closed structure, and the radiation below 0.1 microsv is blocked or absorbed by the casing, so the radiation below 0.1 microsv can...

AI Technical Summary

Problems solved by technology

As a result, various personal radiation dose detection instruments have been introduced in the society, but on the whole there is a low sensitivity that can only measure 0.1 microsv.

[0003] The current personal radiation dose detection instrument, because the GM counter tube is located in the casing, is a closed structure, and the radiation below 0.1 microsv is blocked or absorbed by the casing, so the radiation below 0.1 microsv cannot be measured, and the sensitivity is high. Low, narrow test range, can not meet the needs of the majority of users

Images