摘要
低频发射换能器的指向性测试一般依靠外场试验进行。为了提高测试效率和测试精度,缩短测试时间,对发射换能器指向性测试方法进行了研究。以多路功放及指向性仪为基础,以通用计算机为平台,添加了同步信号输出卡和多功能信号采集卡,研制了一套发射换能器指向性现场测试设备,开发了多通道同步脉冲信号发生器和自动测试软件。经现场实验证明,该测试设备结构简单、成本低、可维护性好,能够减少测试工作强度和时间。与人工测量结果的对比表明,设备的测量结果更准确、指向性图细节更明显。
Directivity pattern testing of Low Frequency projecting transducer usually depends on field experiment. In order to improve the testing efficiency and accuracy and shorten the testing time, the directivity pattern testing methods of projecting transducer are studied. Based on multi-channel power amplifier, directivity pattern instrument and general computer and added with synchronization signal output card and multi-function signal acquisition card, a set of projecting transducer directivity pattern field-testing equipment, a multi-channel synchronization pulse generator and a set of automatic testing software are developed. The field experiments show that the testing equipment has some advantages such as simplicity, low cost, good maintainability and reducing the testing work intensity and time. Compared with manual measurement results, the measurement results of this equipment are more accurate and the details of directivity pattern figures are more obvious.
出处
《电子测量与仪器学报》
CSCD
2009年第6期87-92,共6页
Journal of Electronic Measurement and Instrumentation
基金
2008年北京市优秀人才培养(编号:20081D0500500141)资助项目
2008年校级青年基金(编号:N08-12)资助项目
关键词
发射换能器
指向性测试
同步信号输出卡
多功能信号采集卡
projecting transducer
directivity pattern testing
synchronization signal output card
multi-function signal acquisition card
作者简介
林顺英：女，2002年于西安交通大学获得硕士学位，现为北京石油化工学院机械工程学院讲师。主要研究方向为信号处理技术和虚拟仪器。E—mail：linshunying@bipt．edu．cn何伟：男，2002年于贵州工业大学获得硕士学位，现为北京石油化工学院机械工程学院讲师。主要研究方向为机械制造和精密仪器。E-mail：hewei@bipt．edu．cn
