一个新的TMR悬臂式双向流量传感器用于农业和家庭应用
Anwar Ulla Khan1, Ateyah Alzahrani2
1Department of Electrical Engineering Technology, College of Applied Industrial Technology, Jazan University, Jazan 45142, Saudi Arabia.
Sensors (Basel, Switzerland)
|September 27, 2025
概括
一个新的非侵入式水流速传感器使用了道磁阻 (TMR) 传感器和悬臂. 这种具有成本效益的设备可以实现1.0%的准确度,在没有旋转部件的情况下,在两个方向测量流量.
科学领域:
- 工程 工程师 工程师 工程师
- 仪器化 仪器化 仪器化
- 流体力学 流体力学 流体力学
背景情况:
- 精确的水流量测量对于各种工业和家庭应用至关重要.
- 现有的流量计通常涉及侵入性组件,复杂的安装或高成本.
- 非侵入式传感方法在减少维护和延长运行寿命方面具有优势.
研究的目的:
- 开发和验证一种新的,具有成本效益的,用于测量水流速和方向的非侵入式传感机制.
- 评估拟议的传感器设计的准确性,响应时间和歇斯底里.
主要方法:
- 使用了两个道磁阻 (TMR) 传感器 (模拟和双极),一个磁铁和一个不钢悬臂.
- 将磁铁集成到管道系统内的悬臂上,并将TMR传感器放置在外部.
- 使用ESP32微控制器处理来自TMR传感器的模拟电压信号,以确定流速和方向.
主要成果:
- 在前向和反向方向的流量从0到1.5 m3/h不等的情况下,达到1.0%的最坏情况准确度.
- 证明反应时间约为470-487毫秒,恢复时间约为592-625毫秒.
- 计算出的hysteresis误差为1.84%和2.06%的前进和反向流量,分别.
结论:
- 开发的非侵入式传感器提供准确可靠的水流量和方向测量.
- 由于没有旋转部件和外部电气连接,因此可能减少维护和提高耐用性.
- 这种经济高效的基于TMR的传感机制是传统流量计的有希望的替代方案.
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