Phase-change-hysteresis-based spatially distinguishable thermal radiation device and control system and method

A heat radiation and device technology, applied in the field of heat radiation devices and control systems, to achieve the effect of easy large-area processing and application, and easy processing

Active Publication Date: 2019-12-03
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
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[0006] In summary, there is currently no easy way to achieve l

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  • Phase-change-hysteresis-based spatially distinguishable thermal radiation device and control system and method
  • Phase-change-hysteresis-based spatially distinguishable thermal radiation device and control system and method
  • Phase-change-hysteresis-based spatially distinguishable thermal radiation device and control system and method

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Embodiment Construction

[0035] The specific implementation of the present invention will be described in detail below in conjunction with the accompanying drawings: the case of this embodiment is based on the space-resolvable thermal radiation dynamic control system and method based on phase change hysteresis proposed by the present invention, but the scope of protection of the present invention does not It is limited to the following embodiments and cases.

[0036] like figure 1 As shown, a typical space-resolvable thermal radiation dynamic control system based on phase change hysteresis includes: laser control unit 1 (laser 11, optical modulator 12, arbitrary waveform generator 13, and adjustable Attenuation sheet), visible / infrared camera 2, beam splitter 3, microscope objective lens 4, adjustable thermal radiation device 5 containing phase change material with phase change hysteresis effect, and precision positioning platform 6. The laser passes through an internal circuit or an external optical...

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Abstract

The invention discloses a phase-change-hysteresis-based spatially distinguishable thermal radiation device and a dynamic control system and method. According to the invention, with a phase change material with the phase change hysteresis characteristic, spatially distinguishable thermal radiation dynamic regulation and control are realized successfully by combining a resonant cavity type optical structure and using a laser pulse irradiation mode controlling the pulse width. Therefore, low-cost and large-area thermal radiation regulation and control can be rapidly carried out in a large high dynamic range, so that the active infrared camouflage and thermal infrared communication device based on dynamic heat radiation regulation and control is more practical.

Description

technical field [0001] The invention relates to the technical field of thermal radiation control and detection, in particular to a spatially resolvable thermal radiation device, a control system and a method based on the hysteresis characteristic of a phase change material. Background technique [0002] According to Planck's black body radiation law, thermal radiation is a way in which an object above absolute zero outputs energy in the form of electromagnetic waves due to the thermal motion of charged particles inside. The Stefan-Boltzmann law states that the full-band thermal radiation power of an object is proportional to its emissivity ε, and also proportional to the fourth power of the object's temperature T (absolute temperature scale). Therefore, controlling one or both of the object's temperature and heat radiation can realize the control of the object's heat radiation. [0003] In the field of thermal radiation control, thermal radiation control in the time or spac...

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Application Information

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IPC IPC(8): G01J5/02G01J5/10
CPCG01J5/026G01J5/10G01J2005/0077
Inventor 李强徐梓铨仇旻
Owner ZHEJIANG UNIV
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