Design And Implementation Of Atmospheric Environment Monitoring System Based On LPC1115

With the rapid development of economy and industry in China,more and more people pay attention to atmospheric environmental problems.On the other hand,in recent years,the vigorous development of Internet of things makes it possible to connect everything.At present,the common traditional atmospheric environmental monitoring system on the market has the disadvantages of single function,large measurement error,unable to collect data for a long time,large power consumption of the system and unable to view the data after the device is far away from the device.In view of the above shortcomings,the present situation of the atmospheric environmental monitoring system is integrated,and the trend of the atmospheric environment monitoring system may be presented.In the light of the advantages of the embedded technology,the main atmospheric environmental indicators such as temperature,humidity,carbon monoxide concentration,and suspended particles concentration are set up.A multi-function,low measurement error,low power consumption,low cost,air environment monitoring system that can upload data to the ThingSpeak platform is designed.The system designed in this paper chooses microcontroller LPC1115FBD48/303 as the core of hardware design,and connects all functional modules based on it.The temperature sensor and the humidity sensor are connected through the mode / number conversion interface,the carbon monoxide sensor and the carbon monoxide alarm are connected through the universal input / output interface,and the liquid crystal display module is connected through the internal integrated circuit bus.At the same time,the microcontroller LPC1115FBD48/303 communicates through the universal asynchronous transceiver to connect the Wi-Fi module,and uploads the data to the ThingSpeak platform in real time so that the user can view it anytime and anywhere.Considering that the microcontroller LPC1115FBD48/303 has only a group of general asynchronous transceivers,in order to save cost,this paper uses a general input / output interface to simulate a general asynchronous transceiver to communicate in this way.This design is written in C language,compiled and debugged in Keil MDK-ARM development environment.Finally,this paper tests and analyzes the required functions.It can be seen that the system functions designed in this paper meet the expectations,meet the requirements of the design,and can effectively control the measurement error,and can be applied to all kinds of required scenes.