The Research On Wireless Intelligent Home System

With the rapid developm ent and the rise of the Internet of things industry,as a branch of the Internet of things,smart hom e particularly rapid developm ent.In the smart home system,selecting a wireless sho rt distance transmission protocol is very important.ZigBee protocol has advantages such as short distance,low power consumption and high reliability.This paper mainly on the ZigBee protocol and GSM communication mode for analysis and research,and build the hardware platform,and finally realize the communication of intelligent home system.The first study of ZigBee technology and GSM technology,analyzed the principle of ZigBee technology,from the physical layer,MAC layer,network layer to the application layer,each layer through the entity access point,receiving lower transmission data;each layer of the form at of data fram e includes frame head and frame load and frame tail of three parts.Then the operation mode,main function and peripheral point circuit of the m icro processor on CC2530 chip are designed and analyzed.Secondly,the serial interface of the SIM300 m odule and the SIM card slot are studied in detail from the technical characteristics of GSM,and the way of starting and closing of the system is studied.Two line serial interface serial 2,the serial port to transfer the AT instruction,the serial baud rate adaptive technology,from 9600 Hz to 115200 Hz range.AT command to start or close the SIM m odule,the intelligent monitoring parameters of GSM module voltage etc..And then introduces the hardware and software of this paper.Hardware platform is built,which is com posed of m obile devices,SIM300 module,ZigBee contro l module and a term inal module through the AT command of SIM300 m odule,parameter setting and programm ing,realize the communication with the SIM300 device,SIM300 module and ZigBee control module through the serial communication,ZigBee control module and a terminal module through ZigBee protocol.Based on the ZigBee technology and GSM principle,the soft ware design of Z-stack is carried out.The first is the initializa tion of the hardware module,and then initialize the network module,and module initialization tasks;task level from lo w to high user layer,ZDO,APL,hardware abstraction layer,NWK layer and MAC la yer;networking module,communication channel,and set the terminal node ID,establishing a network,waiting for the terminal node request to join,allowed to join after the assignment of addresses to send commands to the terminal node.Finally,the system is tested and an alyzed.The communication between m obile phone and GSM module are tested,the se rial communication between the ZigBe e module and GSM communication between the test and ZigBee m odule;response to successful communication were beeps a nd ZigBee m odule GSM m odule network indicator flashes and ZigBee communication successful LED lights instructions,the results show that the system is good,to achieve normal communication.