文章摘要
王德俊,惠俊英,蔡平,樊世斌,苏龙滨.基于单矢量水听器弱信号值班检测系统[J].声学技术,2005,(1):1~3,25
基于单矢量水听器弱信号值班检测系统
Feeble signal detection on watch based on single vector hydrophone
投稿时间:2004-09-30  修订日期:2004-12-01
DOI:
中文关键词: 微弱信号检测  值班系统  矢量水听器  微功耗乘法器
英文关键词: feeble signal detecting  system on watch  vector hydrophone  micro-power multiplication
基金项目:
作者单位
王德俊 哈尔滨工程大学水声工程学院, 哈尔滨, 150001 
惠俊英 哈尔滨工程大学水声工程学院, 哈尔滨, 150001 
蔡平 哈尔滨工程大学水声工程学院, 哈尔滨, 150001 
樊世斌 哈尔滨工程大学水声工程学院, 哈尔滨, 150001 
苏龙滨 哈尔滨工程大学水声工程学院, 哈尔滨, 150001 
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中文摘要:
      采用平均声强作为检测量,设计出一种基于单个矢量水听器的低功耗弱信号值班检测系统。针对矢量信号特有的90°相移、指向性零点、相乘再积分、正负双极性等问题,设计了宽带全通90°移相网络、双通道检测、1Bit模数混合乘法器、定时放电、绝对值检测等功能电路。系统设计中兼顾高增益、低功耗、稳定可靠等实际需要,并选用微功耗模拟器件。系统仿真研究显示,该系统作用距离超过2km。初步设计制作的实验电路板,工作带宽达到1.8kHz,工作电流5mA,稳定可靠。
英文摘要:
      A low power feeble signal detection system on watch based on single vector hydrophone has been designeo in which average intensity is detected. Problems characteristic of vector signals such as 90° phase difference, zeroes in directivity, multiplication and integration, and double polarity were solved with appropriate functional circuits. High gain, low power and good stability have been taken into account, and micro-power analong circuits used. System simulation shows that the effective range of the system exceeds 2km. Test on an experimental unit indicates that the bandwidth of operation is from 30Hz to 1.8kHz. The circuit works stably with a total current of only 5mA.
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