Design for a Small High-efficiency and High-precision Simulated Blackbody Controller

Abstract

This paper explains the urgent need for, and technological bottleneck of, current portable general-use infrared detectors, and several proposals have been put forward and carried out. Specifically, the TEC semiconductor cooler was adopted to achieve the positive and negative temperature difference required by the infrared detector based on the Peltier effect; a fuzzy-PID control algorithm was employed to achieve high-precision control over the output temperature difference; and the high stability AD acquisition circuit and Newton’s iteration algorithm were adopted to realize a design method for high-resolution and high-accuracy temperature indication, thus to achieve real-time and automated control of the blackbody. Introduction Infrared thermal imaging equipment is popular and widely applied in battlefields as well as equipment and civilian fields in various countries, owing to its numerous advantages, such as easy concealment, all-weather operation, resistance to electromagnetic interference and effectiveness under harsh light. In practice, infrared thermal imaging equipment comes in numerous distinct models and complex classifications, with precise structures and delicate components, so it is a difficult task to develop and supply the portable general infrared detector systems that are urgently needed. The most critical step will be the design and development of a simulated blackbody controller. The design was mainly carried out from three aspects presented in this paper. Specifically, the TEC semiconductor cooler was adopted to achieve the positive and negative temperature difference required by the infrared detector based on the Peltier effect; a fuzzy-PID control algorithm was employed to achieve high precision control over the output temperature difference; and the high stability AD acquisition circuit and Newton’s iteration algorithm were adopted to realize the high resolution and high accuracy of temperature. Figure 1. Diagram of Simulated Blackbody 2nd International Conference on Electrical and Electronic Engineering (EEE 2019) Copyright © 2019, the Authors. Published by Atlantis Press. This is an open access article under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/). Advances in Engineering Research, volume 185