Flashing detector system and its method

Abstract

The invention relates to the performance stabilizing and a device self inspection and self scaling technique for a fluorescent probe system for the probe of rays of radioactive substances. The invention provides the fluorescent probe system and a method thereof. The system comprises a LED light element and a sensor of environmental temperature, a calculation control unit and a digital discharge current unit. The units are communicated with each other through a bus 485. The LED light element and the sensor of environmental temperature comprise a LED control and communication element, a temperature sensor, an LED, a fluorescent body and a photomultiplier; the calculation control unit comprises upper measuring, calculating and controlling elements and a data capture board; the digital discharge current unit comprises a digital gain circuit and a circuit with digital threshold. The invention has the advantage of rational design, good compatibility, small occupation of land, low operation cost, being easily applied for various fluorescent probe systems, realizing timed and non-timed self inspection and self scaling, enabling highly self stabilization of the system.

Description

technical field [0001] The invention relates to the field of radiation detection of radioactive substances, in particular to a technique for stabilizing the performance of a scintillation detector system used for detection of radioactive substances and self-testing and self-calibration of instruments. Background technique [0002] The scintillation detector system is one of the most commonly used devices for detecting radiation dose, energy spectrum, count rate, etc. of radioactive substances. In the fields of special nuclear material detection, radioactive material detection, low-dose environmental detection, and energy spectrum measurement, it has become the preferred technology in these fields due to its high detection efficiency, high measurement sensitivity, and wide spectral response. [0003] Because scintillation crystals, photomultiplier tubes, and electronic circuits are affected by environmental temperature and humidity changes, long-term aging and other factors, ...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the problems in the scintillation detector system in the aforementioned prior art due to scintillation crystals, photomultiplier tubes, electronic circuits, etc., environmental temperature, humidity changes, and long-term aging, etc., the gain, threshold, and resolution of the instrument will appear Drift changes, causing technical problems such as system limit sensitivity and stability to fluctuate. The present invention provides a self-test, self-stabilization, and self-calibration technology for scintillation detector systems. The system includes LED light-emitting devices and ambient temperature sensors. unit, a control calculation unit and a digital preamplifier circuit unit (8), each unit is connected through a 485 bus for communication, and the LED light-emitting device and the ambient temperature sensor unit include LED control and communication components, temperature sensors, LEDs, and scintillators and a photomultiplier tube, the scintillator and the photomultiplier tube form a detector, and the detector is used to measure the environmental background dose, energy spectrum and count, detect the luminous quantity and luminous intensity position of the LED, and deduct the environmental background dose, energy spectrum and count;

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