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1. 发明申请

WO2005048459A3 SIGNALLING METHOD AND APPARATUS 审中-公开
标题翻译：信号方法和装置
公开(公告)号：WO2005048459A3
公开(公告)日：2005-09-15
申请号：PCT/GB2004004712
申请日：2004-11-08
申请人： PLUS DESIGN LTD , ERIC ATHERTON
发明人： ERIC ATHERTON
IPC分类号： E21B47/12 , G01V11/00 , H03K7/06 , H04B3/54
CPC分类号： H03K7/06 , E21B47/122 , G01V11/002 , H04B3/54 , H04B2203/5466 , H04B2203/5475
摘要： An electrical signalling system comprises a modulator arranged to accept information and encode that information in an alternating signal containing repeated rising and falling edges, the encoding being by way of the time between consecutive rising or consecutive falling edges, a transmission path for the signal from modulator to a demodulator, where the demodulator is arranged to detect the signal edge and store a record of the signal around that edge and compare a subsequent part of the signal with that record thereby to detect a like edge and detect the time difference between like edges. Such a system need not detect the precise position of the edge but detects that an edge has occurred within a short time frame, and retains an image of the signal during that period. That image is compared with a subsequent part of the signal, and where the subsequent signal differs only minimally from the record the system deems that a second like edge has occurred. Thus, although the precise position, of the edge may or may not be detected by this system, the time delay between respective like edges is detected. The transmission path can be imperfect, for example inductive. The system is capable of sending recognisable signals along a three-phase electrical supply cable. The invention is particularly applicable to the supply of information from downhole sensors in the oil and' gas extraction industries. Two signals can be sent simultaneously by also detecting unlike edges and the time difference therebetween. Multiple sources of data can be included consecutively.
摘要翻译：一种电信令系统，包括一个调制器，被配置为接受信息并将该信息编码在包含重复的上升沿和下降沿的交替信号中，该编码通过连续上升沿或连续下降沿之间的时间，来自调制器的信号的传输路径解调器，其中解调器被布置成检测信号边缘并且存储围绕该边缘的信号的记录，并且将信号的后续部分与该记录进行比较，从而检测相似的边缘并检测相似边缘之间的时间差。这样的系统不需要检测边缘的精确位置，而是检测到边缘在短时间内发生，并且在该期间保留信号的图像。将该图像与信号的后续部分进行比较，并且其中随后的信号仅与记录的最低限度不同，系统认为发生了第二个相似的边缘。因此，虽然该系统的边缘的精确位置可以或可能不被检测，但是检测各个相似边缘之间的时间延迟。传输路径可能是不完美的，例如电感。该系统能够沿着三相电源线发送可识别的信号。本发明特别适用于从石油和天然气开采行业的井下传感器提供信息。也可以通过检测不同的边缘和它们之间的时间差来同时发送两个信号。可以连续包含多个数据源。

2. 发明申请

WO2006000796A2 SIGNALLING METHOD 审中-公开
标题翻译：信号方法
公开(公告)号：WO2006000796A2
公开(公告)日：2006-01-05
申请号：PCT/GB2005002502
申请日：2005-06-24
申请人： PLUS DESIGN LTD , ATHERTON ERIC
发明人： ATHERTON ERIC
IPC分类号： E21B47/12 , G01V11/00 , H03K7/08 , H03K9/08 , H04B3/54 , H04L1/24 , H04L25/49
CPC分类号： H04L1/246 , E21B47/12 , G01V11/00 , H03K7/08 , H03K9/08 , H04B3/54 , H04B2203/5475 , H04L25/4902 , Y02A90/342
摘要： An electrical signalling system comprises a modulator arranged to accept information and encode that information in an alternating signal containing repeated rising and falling edges, the encoding being by way of the time between consecutive rising and falling edges a transmission path for the signal from the modulator to a demodulator, wherein the modulator is arranged to precede a data signal with a reference signal of a known time, and the demodulator is arranged to detect that reference signal and calculate a calibration error therefrom. The demodulator can record the calibration error and subtract this from subsequent data signals. The demodulator can alternatively (or in addition) adjust the threshold for future signals, on the basis of the calibration error. This is particularly suited to inductive transmission paths such as a three-phase electrical supply cable leading to downhole sensors in the oil and gas extraction industries.
摘要翻译：一种电信令系统，包括调制器，被配置为接收信息并将信息编码在包含重复的上升沿和下降沿的交替信号中，该编码通过连续上升沿和下降沿之间的时间，来自调制器的信号的传输路径解调器，其中所述调制器被布置为在数据信号之前具有已知时间的参考信号，并且所述解调器被布置为检测所述参考信号并从其计算校准误差。解调器可以记录校准误差，并将其从后续数据信号中减去。另外（或另外）解调器可以根据校准误差来调整未来信号的阈值。这特别适用于感应传输路径，例如通往油气开采行业的井下传感器的三相供电电缆。

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