专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20100124288A1 DETECTION OF OUTBOUND MESSAGE SIGNALS IN A POWER LINE TWO-WAY COMMUNICATIONS SYSTEM 有权
标题翻译：检测电力线两路通信系统中的输出信号信号
公开(公告)号：US20100124288A1
公开(公告)日：2010-05-20
申请号：US12596987
申请日：2008-04-18
申请人： Quentin H. Spencer , John B. Hessling, JR. , Benjamin A. Hammond , Dennis L. Kelley , David W. Rieken , William J. Davis , Michael R. Walker, II
发明人： Quentin H. Spencer , John B. Hessling, JR. , Benjamin A. Hammond , Dennis L. Kelley , David W. Rieken , William J. Davis , Michael R. Walker, II
IPC分类号： H04B3/54
CPC分类号： H04L7/042 , H04B3/542
摘要： Improvements in the detection of TWACS outbound message signals. A first improvement involves matching some (or all) of the intermediate points in an outbound preamble occurring between bits of the preamble currently being detected. This reduces the possibility of a false synchronization and therefore decreases the probability of missing outbound message signals. A second improvement is to require some or all of the known preamble bits to exceed a predetermined threshold where both the thresh-old and which bits are adjustable. An additional approach is using 4-8 additional buffers in a transponder to detect preamble patterns in the outbound message. Each half cycle of the outbound message waveform requires entering a bit only into the buffers active for the particular frame of reference in which the message is being transmitted, since only buffers for that frame of reference are employed. The process continues until all bits specified to be sent, based on the length of the outbound message, are extracted. A CRC is then performed for the message. Using this method eliminates the problem of inbound messages being detected as outbound messages, and the resulting “blindness” of the transponder. It further makes the transponders less sensitive to noise which currently causes the transponder to detect a preamble when there is none, resulting in a valid outbound message being missed.
摘要翻译：检测TWACS出站信息信号的改进。第一改进涉及匹配在当前正被检测的前同步码之间出现的出站前导码中的一些（或全部）中间点。这减少了错误同步的可能性，从而降低了丢失出站信息信号的可能性。第二个改进是要求一些或全部已知的前导码比特超过预定阈值，其中阈值和哪些位都是可调整的。另外一种方法是在应答器中使用4-8个附加缓冲区来检测出站消息中的前导码模式。出站消息波形的每个半周期只需要在针对正在发送消息的特定参考帧有效的缓冲区中输入一个位，因为仅使用该参考帧的缓冲区。该过程继续，直到提取基于出站消息的长度指定发送的所有位。然后对消息执行CRC。使用此方法消除了入站邮件被检测为出站邮件的问题，以及由此导致的应答器的“盲目性”。它进一步使得应答器对噪声不太敏感，当前没有发送应答器会导致应答器检测到前同步码，从而导致有效的出站信息被丢失。

2. 发明授权

US5198796A Outbound signal detector system and method 失效
标题翻译：出站信号检测系统及方法
公开(公告)号：US5198796A
公开(公告)日：1993-03-30
申请号：US722134
申请日：1991-06-27
申请人： John B. Hessling, Jr.
发明人： John B. Hessling, Jr.
IPC分类号： H02J13/00 , H04B3/32 , H04B3/54
CPC分类号： H04B3/542 , H02J13/0031 , H04B3/32 , H04B2203/5416 , H04B2203/542 , H04B2203/5466 , H04B2203/5487 , H04B2203/5495 , Y02E60/7892 , Y04S40/146
摘要： In a communication system in which outbound information in the form of multi-bit messages is carried by cyclic waveforms over an electric power distribution network, the signal is detected independently at any of a plurality of locations remote from the source by obtaining signal data by sampling the cyclic waveform over a predetermined portion of successive cycles. The predetermined portion is divided into a plurality of predetermined ranges. From a predetermined number of bits at the start of each message, the particular predetermined range which contains the greatest signal strength is selected. For the remaining bits of the message, only those samples in the selected range are analyzed to detect the outbound message. To reject cross-talk, preselected ranges in which cross-talk signals are likely to appear are monitored, and the in-phase messages are rejected when theh signal strength in the in-phase range is less than the signal strength in at least one of the cross-talk ranges.
摘要翻译：在通过电力分配网络以循环波形携带多比特消息形式的出站信息的通信系统中，通过采样获得信号数据，在远离源的多个位置中的任何一个处独立地检测该信号循环波形在连续循环的预定部分上。预定部分被分成多个预定范围。从每个消息开始处的预定数量的比特，选择包含最大信号强度的特定预定范围。对于消息的剩余位，仅分析所选范围内的那些样本以检测出站消息。为了拒绝串扰，监视串扰信号可能出现的预选范围，并且当同相范围内的信号强度小于信号强度时，同相信息被拒绝串扰范围。

3. 发明授权

US06940396B2 Concurrent phase communication in TWACS 有权
标题翻译： TWACS中的并发通信
公开(公告)号：US06940396B2
公开(公告)日：2005-09-06
申请号：US10430786
申请日：2003-05-06
申请人： Benjamin A. Hammond , John B. Hessling, Jr. , Krister Lagerstrom
发明人： Benjamin A. Hammond , John B. Hessling, Jr. , Krister Lagerstrom
IPC分类号： H04L12/28 , H04B3/54 , H04M11/04
CPC分类号： H04B3/54 , H04B3/542 , H04B2203/5416 , H04B2203/5433 , H04B2203/5466 , Y10T307/266
摘要： A method for concurrently communicating over each phase of an electrical power distribution network (N). A first outbound signal (SO1) is transmitted over one phase (AN-A) of a bus (S) by an outbound modulation unit. The unit is released as soon as the first outbound signal (SO1) is transmitted so the unit can transmit a second outbound signal (SO2) over a second phase (BN-B or CN-C) of the bus. The second outbound signal is transmitted concurrently with an inbound signal (IB1) sent in response to the first outbound signal (SO1). The unit is again released, as soon as the second outbound signal (SO2) is transmitted, so the unit can transmit a third outbound signal (SO3) over the third phase (BN-B or CN-C) of the bus. This third outbound signal is transmitted concurrently with a second inbound signal (IB2) sent in response to the second outbound signal (SO2). The method allows concurrent communications over all three phases of the network (N).
摘要翻译：一种用于在配电网络（N）的每个相位上同时通信的方法。通过出站调制单元在总线（S）的一相（AN-A）上发送第一出站信号（SO 1）。一旦发送第一个出站信号（SO 1），该单元就被释放，因此该单元可以在总线的第二相（BN-B或CN-C）上发送第二出站信号（SO 2）。第二出站信号与响应于第一出站信号（SO 1）发送的入站信号（IB1）同时发送。一旦第二出站信号（SO 2）被发送，该单元再次被释放，因此该单元可以在总线的第三阶段（BN-B或CN-C）上发送第三出站信号（SO 3）。该第三出站信号与响应于第二出站信号（SO 2）发送的第二入站信号（IB2）同时发送。该方法允许网络（N）的所有三个阶段的并发通信。

4. 发明授权

US08542720B2 Detection of outbound message signals in a power line two-way communications system 有权
标题翻译：在电力线双向通信系统中检测出站信息信号
公开(公告)号：US08542720B2
公开(公告)日：2013-09-24
申请号：US12596987
申请日：2008-04-18
申请人： Quentin H. Spencer , John B. Hessling, Jr. , Benjamin A. Hammond , Dennis L. Kelley , David W. Rieken , William J. Davis , Michael R. Walker, II
发明人： Quentin H. Spencer , John B. Hessling, Jr. , Benjamin A. Hammond , Dennis L. Kelley , David W. Rieken , William J. Davis , Michael R. Walker, II
IPC分类号： H04B1/38 , H04L27/00
CPC分类号： H04L7/042 , H04B3/542
摘要： Improvements in the detection of TWACS outbound message signals. A first improvement involves matching some (or all) of the intermediate points in an outbound preamble occurring between bits of the preamble currently being detected. This reduces the possibility of a false synchronization and therefore decreases the probability of missing outbound message signals. A second improvement is to require some or all of the known preamble bits to exceed a predetermined threshold where both the thresh-old and which bits are adjustable. An additional approach is using 4-8 additional buffers in a transponder to detect preamble patterns in the outbound message. Each half cycle of the outbound message waveform requires entering a bit only into the buffers active for the particular frame of reference in which the message is being transmitted, since only buffers for that frame of reference are employed. The process continues until all bits specified to be sent, based on the length of the outbound message, are extracted. A CRC is then performed for the message. Using this method eliminates the problem of inbound messages being detected as outbound messages, and the resulting “blindness” of the transponder. It further makes the transponders less sensitive to noise which currently causes the transponder to detect a preamble when there is none, resulting in a valid outbound message being missed.
摘要翻译：检测TWACS出站信息信号的改进。第一改进涉及匹配在当前正被检测的前同步码之间出现的出站前导码中的一些（或全部）中间点。这减少了错误同步的可能性，从而降低了丢失出站信息信号的可能性。第二个改进是要求一些或全部已知的前导码比特超过预定阈值，其中阈值和哪些位都是可调整的。另外一种方法是在应答器中使用4-8个附加缓冲区来检测出站消息中的前导码模式。出站消息波形的每个半周期只需要在针对正在发送消息的特定参考帧有效的缓冲区中输入一个比特，因为仅使用该参考帧的缓冲区。该过程继续，直到提取基于出站消息的长度指定发送的所有位。然后对消息执行CRC。使用此方法消除了入站邮件被检测为出站邮件的问题，以及由此导致的应答器的“盲目性”。它进一步使得应答器对噪声不太敏感，当前没有发送应答器会导致应答器检测到前同步码，从而导致有效的出站信息被丢失。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式