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1.发明公开APPARATUS AND METHOD UTILIZING MULTI-BIT SYMBOL STREAM IN DIRECTIONAL DRILLING SYSTEM 审中-公开定向钻井系统中利用多位符号流的装置和方法
公开(公告)号：EP3189209A1
公开(公告)日：2017-07-12
申请号：EP15838319.0
申请日：2015-09-04
CPC分类号： E21B47/122 , E21B7/046 , G01S11/06
摘要： A system includes a transmitter for use in conjunction with a horizontal directional drilling system that transmits a multi-bit symbol stream that characterizes sensor symbols for receipt by an aboveground portable device. The portable device receives the symbol stream for aboveground recovery of the sensor signals. The transmitter can precisely place the symbol frequencies at least to avoid a noise environment, as well as to avoid powerline harmonics, and can utilize wave shaping for transmitted symbols at least to provide for transmission power control, spectral content control and wideband antenna matching. The receiver can measure the noise environment to identify the symbol frequencies used by the transmitter. The noise can be scanned at an incremental resolution across a wide frequency bandwidth for display or automatic symbol frequency selection.
摘要翻译： 一种系统包括与水平定向钻井系统结合使用的发射器，所述水平定向钻井系统发射表征传感器符号的多位符号流以供地上便携式装置接收。 便携式设备接收用于传感器信号的地上恢复的符号流。 发射机可以至少精确地放置符号频率以避免噪声环境，并且避免电力线谐波，并且可以利用波形整形来传输符号，至少提供传输功率控制，频谱内容控制和宽带天线匹配。 接收机可以测量噪声环境以识别发射机使用的符号频率。 可以在较宽的频率带宽上以增量分辨率扫描噪声，以显示或自动符号频率选择。
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2.发明公开
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公开(公告)号：EP3189209B1
公开(公告)日：2019-07-03
申请号：EP15838319.0
申请日：2015-09-04
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公开(公告)号：EP4119769A1
公开(公告)日：2023-01-18
申请号：EP22190409.7
申请日：2018-05-23
摘要： A transmitter for inground use controls a depth signal transmit power in relation to a data signal transmit power such that one reception range of the depth signal at least approximately matches another, different reception range of the data signal. A portable device can form a system with the transmitter in which the portable device scans a plurality of frequencies within at least one low frequency depth signal range to measure the electromagnetic noise at each one of the plurality of frequencies and identify at least one of the frequencies as a potential depth frequency for the transmitter. The portable device can include a dual mode filter having a rebar mode and a normal mode filter. The depth signal frequency is dynamically positionable in relation to low frequency noise.
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公开(公告)号：EP4004330A1
公开(公告)日：2022-06-01
申请号：EP20844693.0
申请日：2020-07-22
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公开(公告)号：EP3569816A1
公开(公告)日：2019-11-20
申请号：EP19179465.0
申请日：2015-09-04
摘要： A system includes a transmitter for use in conjunction with a horizontal directional drilling system that transmits a multi-bit symbol stream that characterizes sensor symbols for receipt by an aboveground portable device. The portable device receives the symbol stream for aboveground recovery of the sensor signals. The transmitter can precisely place the symbol frequencies at least to avoid a noise environment, as well as to avoid powerline harmonics, and can utilize wave shaping for transmitted symbols at least to provide for transmission power control, spectral content control and wideband antenna matching. The receiver can measure the noise environment to identify the symbol frequencies used by the transmitter. The noise can be scanned at an incremental resolution across a wide frequency bandwidth for display or automatic symbol frequency selection.
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