Temperature control device and method for medium temperature surface radiation source

Abstract

The invention discloses a temperature control device and method for a medium temperature surface radiation source, and belongs to the technical field of temperature control. The device comprises a power module, a temperature control module, a radiation head module, an embedded computer control module, and an optoelectronic isolator. The device employs a precise temperature control measurement module to precisely control a radiation panel of the medium temperature surface radiation source, employs the technologies of dynamic adjustment temperature control power and multipoint nonlinear correction, achieves the large-area and broadband infrared radiation output, and improves the temperature stability, uniformity and temperature rise and fall time.

Description

technical field [0001] The invention belongs to the technical field of temperature control, and in particular relates to a temperature control device and method for a medium-temperature surface source radiation source. Background technique [0002] At present, the development of medium-temperature surface source radiation sources is mainly concentrated on the cavity-type point source radiation source. The opening of the cavity-type point source radiation source is small, and it is difficult to directly attach it to the instrument. It needs to be used as a reference radiation source in conjunction with a collimator. It is inconvenient to use; while the surface source radiation source with a large radiation surface, the emitted radiation can fill the field of view, which is convenient for calibration and measurement, and can improve the accuracy of measurement and calibration. [0003] As a broadband infrared reference source, the high-performance medium-temperature surface so...

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Problems solved by technology

In the liquid circulation method, the temperature uniformity is maintained by the temperature-controlled heat transfer fluid, and the water flow required by different radiation surfaces is different, and the liquid cooling device affects the portability of the instrument; the Peltier semiconductor method uses Peltier semiconductor devices for heating, but is affected by Due to the limitation of its own power, it is difficult to reach the temperature of several hundred degrees, and there are technical and process problems such as slow temperature change rate and small heating area that need to be spliced; the electric heating wire heating method has high electrothermal conversion efficiency, high temperature resistance and long life, but the traditional The solution has problems such as slow heating and poor temperature uniformity, and design optimization is required

[0005] The existing medium-temperature surface source radiation source takes a long time to stabilize the heating and cooling, which affects the use efficiency; there are problems in the winding design and process of the electric heating resistance wire, which leads to poor temperature uniformity indicators; the two-point correction method used for temperature accuracy calibration, Large nonlinear error; poor isolation between weak current feedback and remote control and high-power heating, which affects the electromagnetic compatibility of the whole instrument

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