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題 名 | 工作場所音場模擬軟體預估可行性之探討=The Application of the Sound Field Simulating Technique on Noisy Factories |
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作 者 | 葉文裕; 林守香; 汪島軍; 張文隆; | 書刊名 | 勞工安全衛生研究季刊 |
卷 期 | 7:2 1999.06[民88.06] |
頁 次 | 頁231-242 |
分類號 | 412.78 |
關鍵詞 | 音場模擬技術; 預估模式; 噪音源; 現場量測; Sound field simulating technique; Prediction model; Noise source; Field measurement; |
語 文 | 中文(Chinese) |
中文摘要 | 工作場所音場模擬預估模式是將噪音環境之噪音源與工廠邊界條件建構於音場模 擬軟體,利用該軟體推估作業場所內之音場分佈,除可由模擬結果瞭解勞工噪音暴露音壓級 ,實施噪音危害保護管理計畫外,並可依各噪音改善方案對應不同之噪音源特性與工廠邊界 條件等參數,進行改善後音場模擬,評估各方案之成效,提供事業單位執行廠房噪音控制之 參考。 本研究係採用音場模擬商用軟體 (RS 與 RN 二套音場模擬軟體)進行試驗,研究初 期於邊界條件簡單且易控制之音響實驗室與會議室內進行音場模擬技術準確性測試,結果顯 示模擬值與現場量測值之差值約於 1dB 左右,該技術可應用於室內音場分佈之推估。 另選 擇一噪音工廠進行音場模擬,探討該模擬技術於複雜噪音環境之適用性,因作業工廠之邊界 條件較複雜,模擬結果顯示於該工廠推估有 2.3-5.2dB 之誤差。 為進一步瞭解該技術於工 程控制成效評估之可行性,針對噪音源防音罩打開與蓋上進行音場模擬,模擬結果防音罩約 可降低 2dB 之功效。該模擬技術應用於複雜廠房,於定量上雖有 5dB 左右之誤差,但若配 合各控制方案對應之參數變動進行成效模擬,結果可作為事業單位選定噪音改善方案之參考 。 |
英文摘要 | Noise Control Prediction Model uses sound field simulating techniques to collect data on environmental variables of noise work site and on noise source, then uses computer software to analyze data collected and makes simulated sound field prediction. The model can also be used to estimate the effectiveness of each noise control proposals. The results will serve as a reference for factories when implementing noise control projects. Using computer programs(RS and RN) to evaluate the sound field in this study. our institute has started to analyze the factors under a simplified and controllable lab environment using the simulating sound field software and techniques. Since the difference between predicted figures and on-site measurements in the study is less than 1dB, we expect to use the tested model on real work sites effectively. We choose a noisy factory to perform sound field simulation. The test result from the tape factory shows that RN came out best with the RMS of 2.3dB between predicted figures and field measurements. The RMS of sound pressure between predicted figures and actual measurements does not exceed 5 dB. In addition, the comparison on the contour sound maps indicates that the simulation result of RN produces a similar sound map to the map drawn from actual measurements. We can use this technique to predict the effectiveness of noise control proposals and the results can serve as a reference. |
本系統中英文摘要資訊取自各篇刊載內容。