Development of A Low Power Temperature Sensing Device Based on BLE Technology

Among the various disasters that are prone to occur in cities, the incidence of fires and casualties has always been ranked top. As buildings have high population densities and activities, the possibility of fires is relatively high. Among the causes of building fires, careless use of flames or electrical leakage occurs most often. Existing building disaster prevention equipment only alerts and evacuates people when a fire occurs, but does not detect abnormalities in the device or heat source before the fire starts. As a result, most of the sensing equipment is not deployed in large quantities for each heat source in the building, which causes the occurrence of dead corners in the building and reduces the reliability of the security system. In order to solve the above-mentioned problems, this paper improves the existing fire detection system, develops temperature monitoring devices with notification functions, integrates low-power Bluetooth and high-precision temperature sensors. As a result, the device with Ultra-low power consumption effectively reduces the frequency of battery replacement. As the device has a small size and no wiring, it continuously senses the temperature change of the fire source or high temperature in buildings, and sends out a notification when the critical value is exceeded to improve the safety of the people in the building.