具有距离自动修正的红外温度监测仪的研究与实现

发布时间：2018-12-10 22:24

【摘要】：在电力系统中,电气设备的温度监测是一项非常重要的工作,现阶段的测温方式主要为接触式测温,由于接触式测温存在安全隐患等问题,所以本文提出一种非接触式红外测温的方式监测变电站电气设备的温度,设计了具有距离自动修正的红外温度监测仪。本文首先介绍了红外测温基本原理、对影响红外测温主要因素进行了分析,针对有影响较大的距离因素,提出了距离修正补偿的方法,来降低距离因素对测温的影响,接下来对激光测距的基本原理进行了介绍。结合项目的实际需求以及现有条件提出了系统的总体方案设计和激光测距方案设计。然后进行了系统的电路设计,包括微控制器电路设计、环境温度DS18B20测温电路设计、红外温度MLX90614测温电路设计、激光测距模块的电路设计、人机交互界面电路设计和电源供电路设计;绘制了系统的PCB板,并进行了焊接工作。编写了系统的程序代码,包括主控制程序代码、环境温度DS18B20温度采集程序代码、红外温度MLX90614温度采集代码、激光测量程序代码和人机交互界面程序代码等。最终完成整个测温系统的软、硬件调试工作,实现了红外温度监测仪的主要功能,经测试,系统符合设定的性能指标。
[Abstract]:In the electric power system, the temperature monitoring of electrical equipment is a very important work. At this stage, the main way of temperature measurement is contact-type temperature measurement, because of the problems of safety hidden danger in contact-type temperature measurement, etc. In this paper, a non-contact infrared temperature measurement method is proposed to monitor the temperature of substation electrical equipment, and an infrared temperature monitor with automatic range correction is designed. In this paper, the basic principle of infrared temperature measurement is introduced, and the main factors affecting infrared temperature measurement are analyzed. In order to reduce the influence of distance factor on temperature measurement, a method of distance correction compensation is put forward in order to reduce the influence of distance factor on temperature measurement. Then the basic principle of laser ranging is introduced. According to the actual requirements and existing conditions of the project, the overall scheme design and laser ranging scheme design of the system are put forward. Then the circuit design of the system, including microcontroller circuit design, ambient temperature DS18B20 temperature measurement circuit design, infrared temperature MLX90614 temperature measurement circuit design, laser ranging module circuit design, Interface circuit design and power supply circuit design; The PCB board of the system is drawn and welded. The program code of the system includes main control program code, environment temperature DS18B20 temperature acquisition program code, infrared temperature MLX90614 temperature acquisition code, laser measurement program code and man-machine interface program code. Finally, the software and hardware debugging work of the whole temperature measuring system is completed, and the main function of the infrared temperature monitor is realized. After testing, the system accords with the set performance index.
【学位授予单位】：内蒙古大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM63;TN219;TN249

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