Design And Implementation Of Real-time Environmental Monitoring System Based On WiFi

With the further reform,we have made remarkable achievements in the past forty years.The overall national power is further strengthened,the international discourse power is further enhanced.With the abundant material life,there is also plenty of problems of serious environmental pollution.Such as air pollution caused by burning of crop straw and exhaust gas of enterprises,water pollution of groundwater and seawater,and also construction waste,domestic waste and noise pollution in urban life.Just like the haze that affects people’s life in a large scale,it makes people gradually realize the importance of environmental protection and pursue higher quality of life.At present,the government has incorporated the construction of ecological civilization into its priorities,and issued relevant laws and regulations.For instance,action plan for air pollution,soil contamination and water pollution prevention and control.Real-time monitoring of environmental pollutants is an effective measure to protect the environment,it can not only restrain the uncivilized behavior of some enterprises and individuals,but also provide guidance and visual data for prevention.This thesis designs an embedded real-time environment monitoring system based on WiFi for the safety supervision of factory production.The hardware part of the system includes the main control chip with its peripheral interface,and various sensors for collecting environmental related data.In the selection of main control chip,S5PV210 microprocessor produced by SamSung is selected,it includes multiple GPIO and USB interfaces.For the environmental parameter sensor,AM2302 temperature and humidity sensor,GP2Y1051 dust concentration sensor and Logitech-C310 webcam are selected.They collect the temperature and humidity,PM2.5 concentration and spot video images in the current environment respectively.The software part of the system is based on the embedded Linux operating system.It realizes the collection function by means of synchronization,then processes the environment parameter data,and stores the processed data in the local flash memory,transmits real-time video by video stream when needed.In order to realize good human-computer interaction function,the embedded web server and small SQLite database are transplanted at the same time.The whole system is designed by B/S mode,and connects to the network based on the wireless WiFi to interact with users.It will display the collected data in the browser’s web page,and can carry out on-site video surveillance.Through the test of the system,it can run stably for a long time,and record the parameter data in the current environment accurately.Terminals that connect to network can browse normally.It is operated simplely and has low cost,that is designed as expected.