Design And Realization Of Environmental Monitoring System Of PM2.5/Nuclear Radiation Based On ZigBee Protocol Stack

With the large-scale development of industrialization,urbanization and nuclear technology in China,the harm of atmospheric haze and nuclear pollution has also increased.At present,air pollution and nuclear pollution have become a serious environmental problem Causing widespread concern.In order to alleviate the haze and nuclear accidents on social stability and public life and property safety hazards,monitoring the region’s environmental quality situation has become a top priority.In this paper,a new ZigBee technology based on real-time monitoring of nuclear haze health and remote real-time alarm system,not only real-time measurement of PM2.5concentration,γ radiation dose rate and a variety of environmental parameters,but also with a GPS geographical location,Time information,wireless data transmission and remote GSM SMS alarm function,the collected data can not only be displayed in the latest OLED,but also in the host computer software interface real-time observation,real-time and fast positioning to monitor a region of air health situation.When the received PM2.5concentration exceeds the limit,not only will trigger the coordinator buzzer and LED sound and light alarm,but also trigger the GSM SMS module will be level pollution alarm message sent to the user’s mobile phone,to remind the staff to develop emergency Treatment program,so that people live more secure,making the measurement more practical significance.The work of the paper includes:(1)Design of node hardware: a low-power CC2530 chip of TI is selected as the core of the radio frequency module,focusing on the design of CC2530 + RFX2401 radio frequency module,and complete the external circuit design.(2)Design of the system software program: On the basis of the OSAL architecture in the Zstack protocol stack,the related configuration of the network and the drive configuration of the CC2530 are completed.The polling query method is used to focus on the data packet sending and packet reception and analysis of the three functional devices.Design a set of data based on ZigBee protocol packet communication format,proceed to complete the different sensor data and GPS geographic information and time information collection and processing work,if the concentration is greater than the alarm threshold tocomplete the GSM module to send text messages.(3)The simulation experiment is carried out to simulate the radioactive environment and dust environment,and the GSM SMS alarm test is completed.The collected environmental data is observed in real timeThe experimental results show that the research results are as follows: Combining the ZigBee wireless technology,GPS positioning technology,sensor acquisition technology and GSM short message technology to complete the PM2.5 / nuclear radiation environment monitoring and alarm system in a certain area,the obtained sensor data is expected Goal,is feasible and reliable;and the communication module is cheap,easy to carry,easy to operate,to achieve multi-objective monitoring,to solve the traditional wired monitoring equipment in the blind area wiring inconvenience,can not be remotely located,limited scope of monitoring and human input,The CC2530 + RFX2401 RF design allows the entire monitoring area to expand,combined with GSM remote alarm function,for outdoor PM2.5 / nuclear radiation environmental quality monitoring to provide a high practical value..