| 精密超声波温度测量仪设计 |
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| 引用本文： | 张兴红,蔡伟,向凤云,孙世政.精密超声波温度测量仪设计[J].仪表技术与传感器,2011(6). |
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| 作者姓名： | 张兴红 蔡伟 向凤云 孙世政 |
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| 作者单位： | 重庆理工大学,机械检测技术与装备教育部工程研究中心,重庆,400054 |
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| 摘 要： | 利用超声波在介质中传播速度随温度变化而变化的特点,设计了一种新型精密温度测量仪,该测量仪兼有低成本与高精度的特点.采用特殊的软件细分算法对采集数据进行处理,给出了实现该设计所需要的硬件电路图和软件算法流程图,并对测量仪的分辨率进行了分析.分析结果显示设计实现了超声波ns级微小时间的测量,使超声波测温技术在实际运用中的关键问题得以解决,从而使测量结果的分辨率优于0.001℃.
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| 关 键 词： | 超声波温度计 软件细分 精密测量 信号采集 FPGA |
Design of Precise Ultrasonic Thermometer |
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| ZHANG Xing-hong,CAI Wei,XIANG Feng-yun,SUN Shi-zheng.Design of Precise Ultrasonic Thermometer[J].Instrument Technique and Sensor,2011(6). |
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| Authors: | ZHANG Xing-hong CAI Wei XIANG Feng-yun SUN Shi-zheng |
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| Affiliation: | ZHANG Xing-hong,CAI Wei,XIANG Feng-yun,SUN Shi-zheng(Engineering Research Center of Mechanical Testing Technology and Equipment,Ministry of Education,Chongqing University of Technolog,Chongqing 400054,China) |
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| Abstract: | Using characteristics that ultrasonic speed varies with temperature in medium,this paper designed a kind of new temperature measurement apparatus.The ultrasonic thermometer possessed both low cost and high precision.It used the special software subdivision algorithm for processing collecting data.The paper introduced the design of the hardware circuit and software flowchart as well as the analysis of accuracy for measuring instrument.The analysis results show that the design can realize the measuring of nan... |
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| Keywords: | ultrasonic thermometer subdivision algorithm precision measurement data capture FPGA |
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