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FAST health monitoring system

A technology of health monitoring system and radio telescope, applied in measurement devices, instruments, etc., can solve the problems of complex structure of active reflector system, and achieve the effect of ensuring structural safety and reliability of use, good EMC performance, and cost saving

Inactive Publication Date: 2015-06-10
NAT ASTRONOMICAL OBSERVATORIES CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

[0004] The active reflector system has a complex structure and a design life of 30 years

Method used

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Embodiment Construction

[0059] In order to further explain the technical means and functions adopted by the present invention to achieve the predetermined technical purpose, the structure and working process of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0060] The FAST radio telescope health monitoring system described in the present invention includes several strain sensors arranged on the radio telescope lattice columns, ring beams, and main cable nets, and monitors the force and deformation state of the setting points through the strain sensors, thereby monitoring the structural safety of the radio telescope reliability and reliability.

[0061] The above-mentioned sensors adopt vibrating wire strain gauges or fiber Bragg grating strain gauges.

[0062] The above sensor layout principles are as follows:

[0063] The long-term strain monitoring points of ring beams and lattice columns all adopt fiber grating strain...

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Abstract

The invention discloses a FAST health monitoring system. The system comprises a plurality of strain transducers arranged on latticed columns, ring beams and a main cable net of a radio telescope. Stress and deformation states of arranging points are monitored through the strain transducers, and accordingly, the structural safety and the usage reliability of the radio telescope are monitored. The system has a good EMC performance, and the electromagnetic effect on the radio telescope is prevented. Different sensor types are selected as required, and costs are saved on the premise that the monitoring function is achieved.

Description

technical field [0001] The invention relates to a FAST radio telescope health monitoring system, in particular to the structural safety monitoring of the radio telescope. Background technique [0002] The National Astronomical Observatory of the Chinese Academy of Sciences proposed to build a 500-meter-caliber spherical radio telescope, which is the world's largest single-caliber radio telescope. FAST (Five-hundred-meter Aperture Spherical radio Telescope, referred to as FAST) has broken through the 100-meter engineering limit of ground-based telescopes and created a new model for building giant radio telescopes. The overall technical indicators of FAST: the aperture is 500m, the radius of curvature of the reflective surface is 300m; the aperture of the lighting area is 300m, and the focal ratio f / D=0.4611. [0003] The FAST active reflector is composed of ring beams, lattice columns, reflector units, main cable nets, actuator devices, ground anchors, etc. The structural di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D21/02
Inventor 王启明朱明吴明长赵清
Owner NAT ASTRONOMICAL OBSERVATORIES CHINESE ACAD OF SCI
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