This project assists the EPA in controlling noise from vehicles in use, Including the inspection and control of noisy vehicles, providing consultation and support for noisy vehicles, and promoting related operations of acoustic cameras. Completed combined tests for microphone array with “Acoustic Camera Technology Law Enforcement 1.0” and “Simplified Acoustic Camera Equipment” (Acoustic Camera Technology Law Enforcement 2.0), and on-site verification tests. The results show that multi-vehicle noise interference (including opposite lanes) can be preliminarily excluded. Advanced technology was used to strengthen inspections in order to screen out high-noise vehicles and identify multiple vehicle sources, so as to enhance law enforcement efficiency. Also assess the feasibility of applying acoustic cameras to noise control on construction sites. Completed collection of information on tech enforcement acoustic camera technologies on the market at home and abroad. Referenced and completed the Proposal for “Technology Law Enforcement on Construction Projects”, main equipment setup, and analysis on regulations and their implementation (monitoring method). Five real-machine tests on construction projects were conducted in different forms. Assisted in completing research on the noise sensor for secondary or small construction site and planning to combine Class 2 microphone (MEMS) into the existing air quality sensor (RS-485 was used as interface) in order to reduce setup costs. Proposed on technical specifications such as noise commitment issues and simulation prediction often required for construction projects in the environmental impact assessment. Completed investigation of thirty factory vibration cases. Preliminary results indicated that low-frequency noise inspections would be enough to deal with the issue of environmental vibration. When necessary, vibration measurements can be used as an auxiliary measure. As shown by the spectrogram of vibration and low-frequency noise, overlapping of frequency of the two factors is 20 – 80 Hz. Related results were used to update and revise the content of the “Guidelines for Environmental Vibration Management.”

Motor vehicle noise、construction noise、factory vibration