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关于改善热量计微流传感器性能有效措施的调查
Jiali Qi1, Chun Shao1, Wei Wu1
1School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou 310018, China.
Sensors (Basel, Switzerland)
|September 9, 2023
概括
优化热量计微流传感器设计可以提高准确性和范围. 关键的改进包括特定的探测器-加热器间距,上游障碍物和桥梁结构以抑制共振.
科学领域:
- 微流体学 微流体学
- 传感器技术 传感器技术
- 热力工程是热力工程中的一个.
背景情况:
- 热量计微流传感器的性能高度依赖于热传感元件的设计.
- 影响性能的因素包括结构参数,加热器温度和环境条件.
研究的目的:
- 提出和数值验证方法,以提高热量计微流传感器性能.
- 为了提高传感器的精度,测量范围和灵敏度.
主要方法:
- 使用数值模拟来评估设计修改.
- 研究了探测器和加热器 (1.6μm) 之间的最佳距离.
- 评估了上游障碍物和桥梁与悬臂结构之间的影响.
主要成果:
- 一个1.6微米的探测器-加热器间隙减少了流量分离效应,提高了准确性.
- 上游的障碍物通过减少粘性散射来扩大传感器的测量范围.
- 桥梁结构显著抑制了共振振幅 (53%的减少,相比杆).
- 优化的传感器显示范围增加了14.3%,并提高了高流传感度.
结论:
- 拟议的设计修改有效地提高了热量计微流传感器性能.
- 模拟结果与实验趋势一致,验证了拟议的改进.
- 优化的设计提供了更高的精度,更广泛的范围和更高的灵敏度.
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