一种低波动的可程控恒温箱控制系统设计  

Design of a low-fluctuation software-controlled portable thermostat control system

作　　者：柴恒 武杰[1,2] 伍航 戚胜宇 马钰博 Chai Heng;Wu Jie;Wu Hang;Qi Shengyu;Ma Yubo(Department of Modern Physics,University of Science and Technology of China,Hefei 230026,China;State Key Laboratory of Particle Detection&Electronics,University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]中国科学技术大学近代物理系,安徽合肥230026 [2]中国科学技术大学核探测技术与核电子学国家重点实验室,安徽合肥230026

出　　处：《电子技术应用》2023年第4期63-67,共5页Application of Electronic Technique

摘　　要：恒温箱在人们的生产生活和科学研究中有重要作用,如温补晶振参数的测量和补偿等。设计并实现了一种低波动的可程控轻便型恒温箱控制系统。恒温箱采用动态调整工作电压的方式来控制陶瓷加热片或半导体制冷片的功率,从而实现温度的恒定控制。该恒温箱具有温度波动小、支持温度曲线程控、小型轻便的优点。经测试,本设计实现的恒温箱控温范围为-15℃~80℃,稳定时温度波动度为±0.2℃。另外,相比于采用脉宽调制控制方法的恒温箱,该恒温箱有更低的系统电磁辐射和更高的制冷效率,在同样电源输入功率的条件下,可以使温度进一步降低12.9℃。Thermostat plays an important role in people's production,life and scientific research,such as the measurement and compensation of temperature compensated crystal oscillator parameters.This paper designs and implements a software-controlled portable thermostat control system with low fluctuation.This thermostat uses a method to control the power of ceramic heating chip or semiconductor refrigeration chip by dynamically adjusting the working voltage,so as to realize the constant control of temperature.This thermostat has advantages of low temperature fluctuation,supporting temperature curve software control,small and portable.After testing,the temperature control range of the thermostat realized in this design is from-15℃to 80℃,and the temperature fluctuation in stable state is±0.2℃.In addition,compared with the thermostat using pulse width modulation control method,this thermostat has lower system electromagnetic radiation and higher refrigeration efficiency.Under the same power input condition,the temperature can be further reduced by 12.9℃.

关 键 词：恒温箱 温度控制 高效 低波动 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]