Design And Realization Of Home Security System Based On Internet Of Things

In recent years,with the development of various science and technology(such as automation technology,Internet technology,Internet of things technology,etc.),people’s study and life is more and more convenient,and their life is more and more colorful.With the development of the Internet of things,the field of smart home has been rapid development,people’s concept of smart home has changed,from the previous do not care about,do not understand,to slowly accept,take the initiative to enjoy the convenience of smart products.As an important branch of smart home,home security field is also developing rapidly.Home security to a large extent to protect the safety of home life,but there are some problems in China’s home security industry,such as home security products are more expensive,inconvenient installation,poor expansion,people’s acceptance of home security is not enough and other problems.By studying the background and related knowledge of home security field,and making an overall survey of various needs of home security,the home security system based on the Internet of things is designed and the overall design scheme is put forward.STM32F103RCT6 is selected as the main control microcontroller,responsible for data processing and communication coordination.The main idea is: through each terminal module,namely smoke detection sensor,human body infrared sensor,gas detection unit to sense the environment.Then the ZigBee module communicates with the main control module.The main control module connects to the network and the cloud server through the WIFI module.Users can log in to the cloud server through their mobile phones to check the system dynamics.At the same time,the main control module is connected to the GSM Modem module.When a fire or gas leak occurs,the GSM Modem module sends messages to inform users.The hardware and software were designed,and the system was built and tested.In hardware design,the main control module,wireless communication module,ZigBee module and terminal peripherals are designed.ESP8266 is used for wireless communication module and CC2530 is used for ZigBee module.CC2530 is used to build terminal modules,such as fire alarm module,gas detection module,human infrared detection module,etc.In software design,IAR Embedded Workbench and other development software are used to complete the design of each module,and the software design of each terminal module is completed on the basis of ZigBee communication.Finally,the home security system is built and tested.The test results of each module also show that the system is stable and reliable,can meet the preset requirements,the system function is perfect,and meets the expectations of home security system.Finally,the home security system is built and tested.The test results of each module also show that the system is stable and reliable,can meet the preset requirements,the system function is perfect,and meets the expectations of home security system.