Abstract：Objective To design a wireless power-off alarm device. Methods HT66F489 was used as the main control chip, and the city electricity was monitored through the comparator. When the city power was abnormal, an alarm device on the buzzer alarmed directly to prompt the medical equipment power supply anomalies. On the other hand, the power failure alarm information was sent to the medical engineering department staff in the form of wireless, so as to prompt the corresponding measures as soon as possible. The whole alarm device could be externally connected with any monitoring device, and could also be embedded inside the power supply socket, with high degree of freedom. Results After the clinical test, the designed wireless power-off alarm device could connect all kinds of long time continuous medical equipment in a way of external connection, so as to achieve the purpose of monitoring at any time. Conclusion The designed wireless power-off alarm device is very suitable for power failure monitoring of various medical devices, and further improves the quality of clinical services.
