Detector device used for radiation monitoring

A technology of detectors and equipment, applied in the field of environmental radiation monitoring, can solve the problems of affecting the signal output of ionization chambers, being unable to withstand climatic conditions, and prone to fluctuations in ionization chambers, so as to achieve strong environmental adaptability, improve the ability to resist electromagnetic interference, The effect of guaranteed performance

Inactive Publication Date: 2009-09-09
TSINGHUA UNIV +1
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Problems solved by technology

[0009] However, due to the separation of the existing ionization chamber and the corresponding amplification/data acquisition circuit, the overall sealing of the detector is poor, and it is often unable to withstand various harsh weather conditions, especially in a mixed environment with long-term humidity or unknown air composition The capacitance between the electrodes of the ionization chamber tends to fluctuate, and the leakage curre

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  • Detector device used for radiation monitoring
  • Detector device used for radiation monitoring
  • Detector device used for radiation monitoring

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Embodiment Construction

[0055] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components, although shown in different drawings. For clarity and conciseness, detailed descriptions of known functions and constructions incorporated herein will be omitted since they would otherwise obscure the subject matter of the present invention.

[0056] Such as figure 1 As shown, the detector device of the embodiment of the present invention includes a high-voltage spherical gas-filled ionization chamber 1, a signal amplification / data processing circuit board (circuit part) 2, a metal sealing box 3, and an insulating cover 4, etc.

[0057] Such as figure 2 The high-voltage spherical ionization chamber 1 includes an upper hemisphere 103 of a spherical shell, a lower hemisphere 104 of the spherical shell, an electrode ball 101 at the spherical ...

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Abstract

The invention discloses a detector device for radiation monitoring, which comprises an ionization chamber part comprising a shell and an electrode part, a circuit part processing electric signals from the electrode part, and a metal seal box, wherein the circuit part is arranged in the metal seal box. Besides, a spherical gas filled ionization chamber, a signal amplification/data processing circuit, the metal seal box and other parts are all arranged in an insulating cover so as to further improve the adaptivity of the whole detector device to severe environment. Moreover, the outer layer of the insulating cover is plated with a conductive film, thereby achieving the electromagnetic shielding effect, improving the electromagnetic interference resistance of the signal amplification/data processing circuit, ensuring the stable performance and improving the measuring accuracy.

Description

technical field [0001] The invention relates to the technical field of environmental radiation monitoring, in particular to a detector device for radiation monitoring. technical background [0002] As a clean energy source, nuclear power also has its own disadvantages, that is, nuclear energy is radioactive. Therefore, it is very important to monitor the environmental radiation in a large area around the nuclear power plant, especially the development of gamma-ray detector equipment that directly reflects the local radioactivity level is extremely necessary. [0003] At present, there are few detectors for environmental gamma-ray monitoring at home and abroad. Environmental gamma spectrometers produced in my country (such as BH1324F of Beijing Nuclear Instrument Factory) have strong performance and low measurement error, but they can only analyze samples and are not specially designed for environmental background gamma-ray radiation monitoring. Moreover, the system is too ...

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Application Information

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IPC IPC(8): G01T1/185
Inventor 李元景缪庆文李荐民张清军王永强代主得李树伟
Owner TSINGHUA UNIV
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