| 宋灿,刘石,任思源.基于超声波飞行时间的温度测量系统实验研究[J].,2015,34(4):351-357 |
| 基于超声波飞行时间的温度测量系统实验研究 |
| Experimental study on temperature measurement system based on ultrasonic time-of-flight technique |
| 投稿时间：2014-11-15 修订日期：2015-06-09 |
| 中文摘要: |
| 超声波测量技术具有速度快、成本低、测量范围广等优点，广泛应用于多种工业领域。为满足工业中对温度测量的需求，本文提出了超声波温度测量系统。本系统基于超声波的传播速度与环境温度的关系，以STC12单片机作为系统硬件电路控制核心，采用幅度和相位调制的矩形波作为发射波，实现在恒温箱空气介质中固定距离下的超声波飞行时间的测量，以此确定介质的平均温度。测量数据由单片机传输到上位机进行处理和显示，并与恒温箱热电偶测得的温度对照，验证实验结果。实验结果证明本系统可以准确测量温度，温度范围约在35℃—90℃。 |
| 英文摘要: |
| Ultrasonic measurement technology is widely used in many industrial fields with the advantages of fast speed, low cost and wide measurement range. In order to meet the demand for temperature measurement in industry, in this paper, ultrasonic temperature measurement system is presented. Based on the relationship between ultrasonic propagation speed and environmental temperature, this system measures ultrasonic time of flight at a fixed distance to determine the average temperature in the air of a thermotank with MCU STC12 as the hardware circuit control core and amplitude and phase modulation rectangular wave as the transmitting wave. The measured data from MCU are processed and displayed by PC to verify the experimental results, in contrast with the temperature measured by the thermocouple in the thermotank. Experimental results show that the system can ac-curately measure the temperature in the range of 35℃ to 90℃. |
| DOI：10.11684/j.issn.1000-310X.2015.04.011 |
| 中文关键词: 超声波，测温，换能器，飞行时间 |
| 英文关键词: Ultrasonic, Temperature measurement, Ultrasonic transducer, Time of flight |
| 基金项目:教育部111引智基地(B13009) |
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