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超声波脉冲速度的测量使用自动值错误校正改进了准确度
Piyush1,2, Nitin Dhiman1,2, Bishan Kumar1,2
1Pressure Vacuum and Ultrasonic Metrology, CSIR National Physical Laboratory, Dr. K S Krishnan Marg, New Delhi 110012, India.
The Review of scientific instruments
|December 11, 2023
概括
这项研究引入了一种新的电路,以改善超声波脉冲速度 (UPV) 测量,用于具体的健康监测. 开发的系统大大减少了值检测造成的错误,提高了结构评估的准确性.
科学领域:
- 土木工程 土木工程是指土木工程.
- 材料科学 材料科学 材料科学
- 非破坏性测试 不破坏性测试
背景情况:
- 超声波脉冲速度 (UPV) 对于评估混凝土的强度和结构完整性至关重要.
- 目前使用单值检测的UPV系统容易产生值错误,影响测量准确性.
- 在超声波传输时间中,标准的50kHz UPV测试器可能会出现高达10%的错误.
研究的目的:
- 开发和描述一个改进的UPV测量电路.
- 为了检测和补偿UPV测量的值错误.
- 提高具体健康监测的准确性和可靠性.
主要方法:
- 实施了一种新的UPV测量电路.
- 使用两个值比较器和两个混合计数器进行错误校正.
- 测试开发的电路在一系列接收器收益的性能.
主要成果:
- 开发的电路有效地检测和补偿值错误.
- 在广泛的接收器收益中最大限度地降低值误差.
- 在测量准确度方面取得了显著的改进,偏差在100 ns内.
结论:
- 新电路对现有的UPV测量系统有了显著的改进.
- 通过值错误补偿,提高了准确的具体健康监测.
- 开发的系统为结构健康评估提供了更可靠的数据.
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This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
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