摘要
对瞬态变化的高温气流温场温度的准确测量一直是工程测量中的难点,超声波测温技术作为一种新型的非接触式测温方法,其测温原理简单,响应速度快,便于工程安装,可用于多种特殊工况下温度的测量。但由于超声信号在传播过程中的衰减及温场外界条件的干扰问题,使得超声波测温技术还未有广泛应用,目前仍处于研究试验阶段。本文介绍了超声波测温技术的发展历史及测温原理,对超声波测温技术目前存在的问题进行了分析,对超声波测温技术的发展进行了展望。
It has always been difficult to measure precisely the temperature field of transient high-temperature gas flow in engineering sur-veying. The new ultrasonic thermometry is a non-contact technology with simple measurement principles and fast response. It can be installed eas-ily and is adaptable to various special conditions. But due to ultrasonic attenuation in signal propagation and external interferences of temperature field, this technology has not been widely used and is still in the stage of research testing. This article describes the development history and working principles of the technology, analyzes its existing problems, and looks into the future of its development.
出处
《计测技术》
2014年第1期1-4,9,共5页
Metrology & Measurement Technology
基金
航空科学基金资助项目(20112244003)
关键词
超声波
测温
高温气流
温场
ultrasonic
thermometry
high-temperature gas flow
temperature field
