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原文传递 Smart Sensor for Autonomous Noise Monitoring (SSAM). Final rept.

题名：	Smart Sensor for Autonomous Noise Monitoring (SSAM). Final rept.
作者：	Meegan-G.D.; Ardani-A.A.; Waters-P.A.
关键词：	Noise-detection; Noise-pollution-control.;Design-; Development-; Traffic-noise; Hardware-; Software-; Measurement-tests; Demonstrations-; Implementation-plans; Recommendations-; Sensors-; Airport-noise; Wireless-; Frequencies-; Highway-noise.
摘要：	This project involves the development of a cost-effective sensor for long-range wireless, autonomous traffic noise monitoring. The noise monitoring device provides a highly efficient means of monitoring and reporting noise such as highway noise, airport noise, construction noise, and many other scenarios where noise monitoring is needed. The device reports noise measurements periodically (e.g., hourly or daily as desired) to a receiver that may be located more than a mile away. At a fraction of the cost of a typical data logging sound level meter, SSAM provides a cost-effective method to monitor noise at many locations simultaneously. The compact size, ease of use, and low cost of the SSAM sensor offer unique benefits for traffic noise monitoring. For example, tens or even hundreds of SSAMs can be distributed along many miles of roadway for continuous, long-term monitoring. The concept for the device and a photo is shown in Figure 1. The resulting technology provides reduced overall noise testing costs and greatly increased data gathering and analysis capabilities for agencies. The increased data gathering capability can provide improved understanding of highway noise sources, airport noise sources, and their variation as a function of location, time-of-day, day-of-week, weather conditions, and other parameters that effect traffic noise levels. In this report, we describe the results of the project as was conducted in two Stages. Work in Stage 1 focused on the design and development of the Smart Sensor for Autonomous Noise Monitoring (SSAM). Embedded processing software was developed to provide the capability to measure sound in averaging modes, apply frequency weightings, and compute octave band analyses with the goal of achieving ANSI standards for Type 1 ratings. Sensor enclosures were fabricated and testing of the noise analysis software was completed. The electronics for the wireless connection was designed, circuit boards were fabricated and transmission ranges of up to 1.2 miles were demonstrated through controlled testing. Work in Stage 2 involved testing, refinement, and demonstration of the technology for Ohio and California departments of transportation. Tests included noise barrier insertion loss and wayside traffic noise measurements.
报告类型：	科技报告