Two models are defined for predicting the trajectory of a foam jet originating from a fire monitor(hydrant)and the related intensity drop point.An experimental framework is also defined and used accordingly to compare...Two models are defined for predicting the trajectory of a foam jet originating from a fire monitor(hydrant)and the related intensity drop point.An experimental framework is also defined and used accordingly to compare real-time data with the predictions of such models.This mixed theoretical-experimental approach is proven to be effective for the determination of otherwise unknown coefficients which take into account several important factors such as the operation pressure,the elevation angle and the nozzle diameter.It is shown that the mean absolute error is smaller than 20%.展开更多
This paper designs a way to introduce Zig Bee technology into the ranch fire monitoring system,and builds a real-time ranch fire monitoring system based on Zig Bee wireless sensor network.The system can monitor the pa...This paper designs a way to introduce Zig Bee technology into the ranch fire monitoring system,and builds a real-time ranch fire monitoring system based on Zig Bee wireless sensor network.The system can monitor the parameters related to ranch in real time,such as air moisture,temperature and smoke density,so as to provide information support for ranch fire prevention and extinguishment.This paper researches the circuit design of Zig Bee wireless sensor network node,node information collection,data fusion,transmission and effective topological structure of sensor network.展开更多
基金the National Key Research and Development Plan(Grant No.2016YFC0801300).
文摘Two models are defined for predicting the trajectory of a foam jet originating from a fire monitor(hydrant)and the related intensity drop point.An experimental framework is also defined and used accordingly to compare real-time data with the predictions of such models.This mixed theoretical-experimental approach is proven to be effective for the determination of otherwise unknown coefficients which take into account several important factors such as the operation pressure,the elevation angle and the nozzle diameter.It is shown that the mean absolute error is smaller than 20%.
文摘This paper designs a way to introduce Zig Bee technology into the ranch fire monitoring system,and builds a real-time ranch fire monitoring system based on Zig Bee wireless sensor network.The system can monitor the parameters related to ranch in real time,such as air moisture,temperature and smoke density,so as to provide information support for ranch fire prevention and extinguishment.This paper researches the circuit design of Zig Bee wireless sensor network node,node information collection,data fusion,transmission and effective topological structure of sensor network.
