Design And Implementation Of Smart Home Control Based On Android

With the rapid development of science and technology,people's living standards improve continually,and smart home gradually walks into the people's lives and beloved.Smart home application of wireless technology,automatic control technology and computer technology,people achieve intelligent device control through the interconnection and communication of mobile terminals and Home appliance.As an important parameter of household control,temperature plays a very important role in people's daily life,and its control is widely used in smart home industry.As a smart home control of the client,mobile phone can receive and control the situation of monitoring point regardless of location constraints.This thesis elaborates the background and significance of the research,analyzes the research status and development situation of smart home system domestic and overseas,and discusses the key technology of smart home system.Through analyzing and researching the temperature of the home,the author designed and realized the smart home control system based on Android,which mainly controls the indoor temperature and keeps it at the optimum temperature.This thesis firstly analyzes the structure,composition and function of temperature acquisition module,and completes the design of temperature data acquisition.The acquisition module uses the Raspberry which is an open source hardware platform as the central controller,selects the DS18B20 temperature sensor as the temperature gathering module,uses the Mysql database as the data storage platform,and has realized the gathering,the storage and the demonstration of temperature and so on.In the temperature control design and implementation,use the table lamp simulation heating system and the DC motor simulation air conditioning system.Based on the temperature data collected by the DS18B20 temperature sensor,read the measured temperature in the database and compare with the temperature value set by the mobile terminal,control the heating or air conditioning equipment with the Python language and achieve temperature control.Set parameters and the establishment of mathematical models according to the characteristics of the controlled object,use PID algorithm for temperature control.Complete the simulation and research of PID control system model by MATLAB / Simulink software,and the optimal PID control parameters are obtained to achieve the best control effect.Finally,the thesis describes design and implementation of the Android application.Through the analysis of the temperature's acquisition and control,has completed the data communication between mobile terminal and control gateway and realized the various functions of the APP.