Abstract:

In order to monitor the real-time status of water pressure,flow and temperature of fire hydrants, a fire hydrant monitor is developed, and signal strength of data transmission and real-time monitoring methods of fire hydrant status are analyzed and studied. Firstly, analyze the signal strength of the hydrant monitor based on NB-IoT network transmission in various space situations. Secondly, the real- time monitoring of a municipal fire hydrant is carried out, and its water pressure change trend is analyzed from both dynamic pressure and static pressure. Then,the effects of valve status and detection cycle on flow monitoring are analyzed. Finally, combined with local temperature, the accuracy of temperature monitoring in the water supply pipe is verified. The results show that the data transmission of the fire hydrant monitor is reliable, the pressure is accurately monitored in the range of 0~400 kPa, the flow rate is sensitively measured in the range of 0.2~25 L/s, and the temperature monitoring data is consistent with local temperature. The results meet the needs of fire hydrant monitoring.

Key words:

fire protection, fire hydrant monitoring, wireless communication, real-time monitoring