Distribution interference-type optical fiber radiation field safety monitoring system

Abstract

The invention relates to a radiation field safety monitoring system based on a distribution interference-type optical fiber sensing technology. According to the radiation field safety monitoring system based on the distribution interference-type optical fiber sensing technology, the monitoring system requires a group of optical cables to be pre-laid inside a radiation field maze, optical fibers in the optical cables are used as a micro vibration sensor, and situations in the radiation field maze are monitored. When personnel enter the maze, vibration existing inside the maze can be monitored in a real-time mode through the optical fiber micro vibration sensor, and the position where the vibration takes place can be rapidly and accurately located. The monitoring system is mainly composed of the distribution interference-type optical fiber micro vibration sensor, a digital signal processing system and a vibration signal analysis system. According to the monitoring technology, wrong-entering conditions of the personnel in the radiation field maze can be monitored, and an alarm can be sent out, and the position where a vibration event takes place is located accurately, and the monitoring technology has extremely high sensitivity and positioning accuracy, and is strong in anti-interference performance.

Description

Technical field [0001] The invention is a safety monitoring system used in radiation fields such as accelerators, cobalt sources, etc., which can realize comprehensive monitoring of personnel in the radiation field area. Involved in the field of radiation safety monitoring. Background technique [0002] Radiation processing is a technology developed in the 1950s, including radiation chemical engineering, radiation materials, radiation disinfection and sterilization, food radiation preservation, and environmental "three wastes" radiation treatment. my country's radiation technology research began in the late 1950s. After years of development and application, radionuclear technology has been widely used in the national economy. [0003] More than 20 years ago, most of my country's radiation processing technology remained in the laboratory and did not go to the market. Since the late 1980s, the application of radiation processing has developed in an all-round way. Relevant units be...

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Problems solved by technology

[0003] More than 20 years ago, most of my country's radiation processing technology remained in the laboratory and did not go to the market

[0006] At present, the traditional radiation field safety monitoring technology mainly uses camera monitoring, warning lights and alarm bells, and door control interlocking, etc., but these devices can only monitor certain fixed points in the radiation field, and cannot fully control the entire radiation field situation , once people are in other uncovered areas during the production process, it will cause extremely serious consequences

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