Development Of Baby Home Monitoring System Based On Smart Phone

With the implementation of the comprehensive second-child policy,there will be a significant increase in the number of babies in China in the next stage.The increase in the number of babies has increased family-level support costs and has also put pressure on baby guardians.Infants are incapacitated and have weak resistance.Once they encounter an emergency,they are extremely vulnerable.This requires the family to perform safe monitoring of the baby,reduce the possibility of danger and improve the safety of the baby.Infants need guardians to take care of them at all times,but guardians may also be inadvertent and pose risks to the baby.The development of related technologies such as wearable devices and smart phones has brought new opportunities to baby monitoring.This study designed and produced a wearable device,introduced the design and implementation of baby sleeping position and turning condition monitoring,breathing detection based on accelerometer and thermometer and hygrometer,and the design and function realization of smart phone APP software.The main research contents of this paper include:1.Designed and produced a wearable device.The device uses a low-power Bluetooth chip nrf52832 as the processor chip,external MPU6050 acceleration sensor,DHT11 temperature and humidity sensor,and is equipped with a lithium battery,using MCP73831 chip for charging,using TLV70033 chip for voltage discharge.Then the circuit was designed and made into a prototype.2.The accelerometer-based sleeping position and turning detection and breathing detection algorithms are realized.According to the direction and data of the three-axis acceleration signal,the sleeping position of the baby is identified,and the detection of the turning movement is realized by the characteristics of the different body position acceleration data;according to the regularity of the collected acceleration data signal during the breathing movement,a detecting breathing is proposed.The method of exercise to achieve the detection of breathing.3.Designed and implemented the baby home monitoring system smartphone APP software.The smart phone APP software has functions such as Bluetooth connection,sleeping position and turning detection,respiratory detection,temperature andhumidity monitoring,video monitoring,data storage,and user information setting.The APP software needs to be registered and used to connect with the wearable device through low-power Bluetooth,receive acceleration data and temperature and humidity data,and receive baby image data through Wi Fi,thereby achieving the function of video monitoring.In addition,the APP can store baby sleep data for long-term analysis and monitoring,and the user can also perform corresponding operations on personal information and stored data through setting functions.4.Functional testing and verification of the infant home monitoring system.In this study,volunteers participated in the experiment to verify the accuracy of sleeping position,turning over and breathing detection.At the same time,the function realization of video monitoring is verified.