A wireless sensor network was created to measure water-flow rate in a fire hose. An integrated electronic piezoelectric accelerometer was chosen as the sensor to measure the flow rate based on the vibrations generated by water flowing through a fire hose close to the hose nozzle. These sensors are small, lightweight, and they can attach to the outside of the hose, not obstructing the water’s flow path. A relationship between the dominant-frequency metric and the flow rate was applied and used to determine real-time water flow in a fire hose critical for improving fireground situational awareness. A nearly monotonic relationship of flow rate to the dominant frequency was established and then used in a custom graphical user interface for quick, real-time, visual referencing by fire personnel of flow rate in a fire hose. While more work is needed, such as improved physical robustness of the sensor-node assembly and increased robustness of the signal metric, this preliminary study shows the potential of a “smart” fire hose for improved situational awareness during a fire attack.

中文翻译：

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使用无线传感器网络测量消防软管的水流量以实现智能消防

创建了一个无线传感器网络来测量消防水带中的水流量。选择集成电子压电加速度计作为传感器，根据水流过靠近软管喷嘴的消防软管产生的振动来测量流速。这些传感器体积小、重量轻，它们可以连接到软管的外部，不会阻碍水的流动路径。应用主频率指标与流速之间的关系，并用于确定消防水带中的实时水流，这对于提高火场态势感知至关重要。建立了流量与主频率的近乎单调的关系，然后在自定义图形用户界面中使用，以便消防人员快速、实时、直观地参考消防水带中的流量。虽然还需要做更多的工作，