| 吴培荣,刘振君,王艳,于亚涛.一款高频弧形换能器[J].声学技术,2012,(6):628~630 |
| 一款高频弧形换能器 |
| A high frequency underwater transducer curved array |
| 投稿时间：2011-12-30 修订日期：2012-03-14 |
| DOI：10.3969/j.issn1000-3630.2012.06.020 |
| 中文关键词: 多波束图像声纳 高频弧形换能器 宽波束 1-3型压电复合材料 |
| 英文关键词: multi-beam image sonar high frequency transducer curved array wide beamwidth 1-3 piezocomposite |
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| 中文摘要: |
| 多波束图像声纳广泛应用于水下工程实施、浅海地貌测绘、蛙人和水雷等水下小目标的探测识别,高频弧形换能器是多波束图像声纳的重要组成部分,用于发射高频宽波束声波.通过理论公式计算了宽波束高频弧形换能器的指向性图,分析了指向性特征：主波束内存在连续的震荡起伏,震荡幅度由中心向两侧逐渐增大,在波束边缘处出现最大值,波束中心幅值比最大值减小1~2 dB左右.采用1-3型压电复合材料,研制了一款宽波束发射的高频弧形换能器,换能器谐振频率为440 kHz,最大发送电压响应为162 dB,-5 dB水平开角为107o,-3 dB垂直开角为26o,可应用于多波束图像声纳. |
| 英文摘要: |
| The high frequency underwater curved transducer array mainly applied in multi-beam image sonar as a wide beamwidth project. By using theoretical formula, the directivity of the high frequency curved transducer array is calculated and the directional characteristics analyzed. A high frequency underwater curved transducer array has been developed, which has a large central angle in the horizontal direction. The curved array is made of 1-3 type of piezo-composite material. Its transmitting voltage response is 162dB, resonance frequency 440 kHz, and the horizontal and vertical beamwidths are 107o(-5dB) and 26o(-3dB) respectively. |
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