Abstract：Objective A sensor alarm device based on the bluetooth technology of single chip computer was designed to detect the
dynamic condition of patients with Alzheimer’s disease. Methods The device was mainly composed of hardware part and software
part. The hardware part was divided into power supply circuit, induction circuit and control circuit. Dynamic monitoring was
achieved through data collection, wireless transmission, analysis, etc. The YZC-161B half-bridge sensor was used to monitor the
patient’s action, collect pressure signals continuously. The stable signal was obtained by amplifying, filtering and shaping of the
circuits at all levels. The stable pressure signal was converted into electrical signal to STC89C52 single chip microcomputer by using
HX711AD chip. After the single chip microcomputer system signal processing, the hc-06 bluetooth was transmitted to the mobile
terminal. The software part used C51 programming to connect Microcontrollers with Bluetooth. Android mobile phone application
software was written by Android studio. The mobile phone recorded and displayed patients’ steps on the screen, when the number of
steps reached a preset value the alarm bell. Results After using the induction alarm device, it could realize monitoring the patient’s
movement, reduce the guardian’s workload and lower the possibility of losing the patient. Conclusion The design can detect the
exact action of the patient allow the guardian to understand the patient’s dynamics accurately, which can prevent the behavior of
patients at night to run out in the first place. It meets the clinical needs, which is valuable for spread.
俞冰，张晓霞，张宇雪，王列震，陈鑫，林晓雷. 基于阿兹海默症患者的感应报警器创新设计[J]. 中国医疗设备, 2018, 33(5): 43-45.
YU Bing, ZHANG Xiaoxia, ZHANG Yuxue, WANG Liezhen, CHEN Xin, LIN Xiaolie. Innovative Design of Induction Alarm for Patients Based on Alzheimer Disease. China Medical Devices, 2018, 33(5): 43-45.
