【作者】 刘国栋；

【导师】 孙晓刚；

【作者基本信息】 哈尔滨工业大学 ， 仪器科学与技术， 2020， 硕士

【摘要】 温度是测量领域中的一个重要参数,随着科技的发展及5G时代的到来,利用现代计算机技术及网络化技术来获取物体表面的温度,在实际应用中具有很重要的意义。本文研制了基于网络化的高速红外测温系统,使用红外辐射测温技术来快速测量物体的温度,并将测量数据传输到服务器端。系统测温范围-20℃-60℃,测量精度±2℃,分辨率±1℃,响应时间优于2.5ms。该系统主要由下位机、上位机和服务器三部分构成。首先确定了系统的总体设计方案,红外探测器选用PVMI-2TE-10.6光伏型红外探测器模组,对测量物体温度在-20℃-60℃有着精确的信号输出。设计了放大电路,用于对探测器输出的信号进行放大。将放大后的信号接入数据采集卡,转换成数字信号并将其传送到上位机进行数据处理。将处理后的信号通过无线传输方式传送到服务器端,同时信号经过数模转换和压流转换提供有线传输的方式供选择。为了保证下位机元器件都工作在其温度范围内,设计了温控系统。上位机运行客户端软件,服务器运行服务器端软件,客户-服务器之间采用远距离非蜂窝通信来进行数据传输。为了保证客户-服务器两者通信的稳定性,制定了客户-服务器通信协议,增设了客户端/服务器端断线重连技术。为了防止数据在传输过程中丢失,采用套接字编程技术,保证数据在传输过程中不会出现丢失、重复、乱序等现象。客户端软件开发了数据测量、系统标定和系统校准三个功能模块,服务器端软件采用数据库进行数据存储,并提供查询、筛选等功能。最后,对整个系统进行了红外探测器输出实验,客户-服务器通信实验。实验结果表明,该基于网络化的高速红外测温系统能够测量在-20℃-60℃之间物体的温度并稳定的将数据传送到服务器端。更多还原

【Abstract】 Temperature is an important parameter in the field of measurement,with the development of science and technology and the arrival of the 5G era,using modern computer technology and network technology to obtain the temperature on the surface of the object,has a very important significance in practical applications.In this paper,a high-speed infrared temperature measurement system based on network is developed,which uses infrared radiation temperature measurement technology to get the temperature of the object quickly,and transmits the measured data to the server.The temperature measurement range of the system is-20℃-60 ℃,the measurement accuracy is ±2℃,the resolution is ±1℃,and the response time is better than 2.5ms.The system is mainly composed of three parts: the upper computer,the lower computer and the server.Firstly,the general design scheme of the system is determined,and the PVMI-2TE-10.6 photovoltaic infrared detector module is selected as the infrared detector,which has accurate signal output in measuring the object under the temperature between-20℃ and 60℃.The amplifier circuit is designed to amplify the output signal of the detector.The amplified signals are connected to the data acquisition card,converted into digital signals and then transmitted to the upper computer for data processing.The processed signal is transmitted to the server through wireless transmission,and the signal is provided with a wired transmission for selection through digital-to-analog conversion and voltage-to-current conversion.In order to ensure that the lower computer components work within the temperature range,the temperature control system is designed.The upper computer runs the client software,the server runs the server software,and the data is transmitted between the client and the server by long-distance non-cellular communication.In order to ensure the stability of communication between the client and the server,the communication protocol between the client and the server is established,and the client/server disconnection and reconnection technology is added.In order to prevent data loss in the process of transmission,socket programming technology is used to ensure that the data will not be lost,repeated or disordered in the process of data transmission.The client software includes three functional modules: data measurement,system calibration and system adjust.The server software uses database to store data,and provides functions such as query and filter.At last,the infrared detector output experiment and client-server communication experiment are carried out on the whole system.the result of the experiment shows that the high-speed infrared temperature measurement system based on network can measure the temperature of objects between-20℃ and 60℃ and transmit the data to the server stably.更多还原