Project Description: The Xiangtan EPA Automatic Environmental Noise Online Monitoring Project can real-time monitor urban environmental noise, and can real-time upload the collected noise real-time data to the Xiangtan EPA noise monitoring platform software through the GPRS wireless network. The site equipment has the characteristics of all-weather monitoring, unmanned duty, system automatic calibration, etc. The system has real-time conduct recording, digital storage, data upload and other functions. Meanwhile, the Xiangtan EPA noise monitoring platform can synchronously record and analyze noise. The automatic environment noise monitoring system also integrates environment noise monitoring, evaluation and publication, and publishes the monitored data through the large LED screen, so as to improve the accuracy, frequency and objectivity of environment noise measurement.