| 提高钻井法凿井测井仪的超声测距可靠性 |
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| 引用本文： | 曹茂永,王霞.提高钻井法凿井测井仪的超声测距可靠性[J].华侨大学学报(自然科学版),2001,22(3):298-302. |
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| 作者姓名： | 曹茂永 王霞 |
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| 作者单位： | 山东科技大学信息与电气工程学院!济南250031 |
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| 基金项目： | 原煤炭部科研基金资助项目 |
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| 摘 要： | 介绍SD-2A型钻井法凿井测井仪的结构和工作原理，为解决提高仪器可靠性和技术指标的关键技术，即超声波在大相对密度非均匀泥浆介质中的可靠测距问题，设计一套超声波数字信号采集系统，对大相对密度非均匀泥浆介质中的超声测距信号，进行傅立叶频谱分析和成分分析，在此基础上，提出超声测距信号处理的几种方法，即频域滤波法和自相关法，给出提高超声测距可靠性的硬件设计，实现在泥浆相对密度为1.3的介质中的可靠测距。
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| 关 键 词： | 钻井法凿井测井仪 自相关法 数据采集 超声信号处理 超声测距 可靠性 频域滤波法 |
On How to Improve the Reliability of Ultrasonic Ranging for Shaft Sinking and Logging Instrument of Boring Method |
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| Cao Maoyong,Wang Xia.On How to Improve the Reliability of Ultrasonic Ranging for Shaft Sinking and Logging Instrument of Boring Method[J].Journal of Huaqiao University(Natural Science),2001,22(3):298-302. |
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| Authors: | Cao Maoyong Wang Xia |
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| Abstract: | For improving reliability of instrument and ultrasonic ranging in slurry of high sp. gr. and inhomogeneity,the authors begin with a descrpition on the structure and the operating principle of SD 2A type shaft sinking and logging instrument of boring method;and design ultrasonic system for acquiring data signal, and let the ultrasonic ranging signal in slurry of high sp. gr. and inhomogeneity undergone Fourier spectrum analysis and component analysis. On this basis, several methods, namely, frequency domain filtering, autocorrelation, etc. are presented for processing signal of ultrasonic ranging. Software design is given for improving reliability of ultrasonic ranging, and reliable ranging in slurry of sp. gr. 1.3 is realized. |
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| Keywords: | shaft sinking and logging instrument of boring method autocorrelation data acquisition ultrasonic signal processing |
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