| Summary: | 碩士 === 大葉大學 === 機械工程研究所碩士在職專班 === 96 === This study installed linear actuator on the assembled intelligent soundproof airtight window control system module for chain control and traffic noise measurement. This method requires the use of programmable noise meter to transmit the measured noise levels via analog output to the sound control chart, in order to control the motor of linear actuator. When the measured noise level exceeds the system setting, the airtight window closes automatically to isolate the outdoor noise. If there is the noise level not exceeding the system setting value for 20 seconds, the window opens automatically for air ventilation. The experiment used the device to measure the noise level of various transportation vehicles, crossroads, and railway crossing, and then inputted the measured data into the system for test.
The results showed that the noise produced by the high-speed railway and train is over 90 decibel, but this system was not suitable due to the characteristics of high speed and short noise time. At intersections, due to the variety of noises, long-term monitoring is required according to the road conditions to approach optimized setting values, in order to achieve the best outcome. At railway crossings, because of fixed noise level and long noise time, this device performs with the best effect.
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