Study On The Home Environment Improvement System Based On The ZigBee Technology

With the unceasing improvement of the economic level and the arrival of information age,the styles of people's life and working are also undergoing significant changes.While pursuing the quality of life,people also place their demand of improving indoor air quality in a prominent position.Thus,the emergence of the IOT smart home and other emerging industries can provide solutions to meet needs of people.Indoor air pollutants are mainly constitutive of formaldehyde,PM2.5?particular matters which can go directly to the alveoli of the lungs?,CO and other substances,which have a serious effect on people's physical health.In this paper,a scheme of environmental improvement system of smart home,on the basis of the ZigBee technology,is put forward to mainly improve air quality in the household environment.Based on the CC2530 chip,this scheme can collect the air data of household environment through the air quality sensor,and the nodes can transmit the data to the cloud platform of monitor device via wireless.By comparing with the standard value,the cloud platform can inform the load end?such as the alarm,fresh air system,negative ion humidifier and other equipment?,to operate when the value is lower than the standard.Therefore,this system can reach its aims of the improvement of indoor air environment and the protection of people's health.This paper carried out a system-wide design and finished a completed study of the improvement system of indoor air quality in terms of the system architecture,hardware selection,software design,system integration and function verification and other aspects.This paper carries out the study regarding the following aspects:1.After analyzing the research background of household environmental improvement system and comparing the parameters of several mainstream wireless communication technologies,the ZigBee technology is finally determined as the wireless transmission technology adopted in this system.And the star topology structure of wireless network is also employed in this study.2.On the basis of the floor plan of two bedrooms and two living rooms,the structure diagram of the improvement system of household environment was drawn.This paper carried out hardware selection and hardware design of the sensor sub-nodes,including human body infrared,temperature,humidity,formaldehyde,PM2.5,CO and CO₂ in indoor household environment by ZigBee center node module based on the CC2530 radio frequency module chip.3.On the basis of the hardware design,this paper carried out the software design in terms of ZigBee center node module,and sensor sub-node modules of human body infrared,temperature,humanity,formaldehyde,PM2.5,CO and CO₂ respectively.It also debugged the system in the cloud platform of monitor device.Through this improvement system,indoor hazardous air substances would fall at a rate of over86%,which refers to that the air quality reaches an excellent level.The system can well achieve its improvement goals with low cost,good hardware compatibility and low energy consumption.