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公开(公告)号：US4622478A
公开(公告)日：1986-11-11
申请号：US815312
申请日：1986-01-02
IPC分类号： G01R23/00 , H03K5/1536 , H03K5/153 , H03K5/00
CPC分类号： G01R23/00 , H03K5/1536
摘要： A signal transmission system utilizes the building or house wiring as the data transmission line. A frequency detection system is required to detect a frequency of the power voltage. The frequency detection system includes a zero-crossing detection circuit for developing a detection output when the zero-crossing is detected. A timer element is provided in the frequency detection system, which functions to neglect an output signal from the zero-crossing detection circuit for a preselected period of time after the last detection output has been developed from the zero-crossing detection circuit.
摘要翻译： 信号传输系统利用建筑物或房屋布线作为数据传输线。 需要频率检测系统来检测电源电压的频率。 频率检测系统包括用于在检测到过零点时显影检测输出的过零检测电路。 定时器元件设置在频率检测系统中，其功能是在从过零检测电路开始最后检测输出之后的预选时间段内忽略来自过零检测电路的输出信号。
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公开(公告)号：US4611274A
公开(公告)日：1986-09-09
申请号：US518450
申请日：1983-07-29
申请人： Katsuyuki Machino , Masahiro Ise , Hidehiko Tanaka
发明人： Katsuyuki Machino , Masahiro Ise , Hidehiko Tanaka
CPC分类号： H04B3/546 , H04L12/403 , H04B2203/5408 , H04B2203/5458
摘要： This disclosure is directed to a data transmission system via the power supply line wherein it is characterized in that; it effectively controls branching terminal units connected to the CPU via the power supply line, by transmitting a high frequency AC signal that is mixed into the AC commercial frequency via the power supply line, while it normally surveilles the actual status of terminal units during normal operations. According to this system as a preferred embodiment of the present invention, after sampling data via the poling, a specific AC commercial frequency cyclic period can be allocated in order to properly transmit any emergency data between terminal units via a contention, and as a result, even in the slow-speed transmission line, not only any change of condition occurring in the terminal units can quickly be sent to the central processing unit, but all the control signals from the central processing unit can also be sent to respective terminal units without being held for waiting.
摘要翻译： 本公开涉及经由电源线的数据传输系统，其特征在于： 通过经由电源线通过发送混合到AC商用频率的高频AC信号，通过电源线有效地控制连接到CPU的分支终端单元，同时通常在正常操作期间监视终端单元的实际状态 。 根据作为本发明的优选实施例的该系统，在通过极化采样数据之后，可以分配特定的AC商业频率循环周期，以便通过争用在终端单元之间适当地发送任何紧急数据，结果， 即使在低速传输线中，不仅可以将终端单元中发生的状况的任何改变快速地发送到中央处理单元，而且来自中央处理单元的所有控制信号也可以被发送到各个终端单元，而不是 举行等待
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公开(公告)号：US4554532A
公开(公告)日：1985-11-19
申请号：US455770
申请日：1983-01-05
IPC分类号： H03M5/04 , G08B25/06 , G08B26/00 , H02J13/00 , H04B3/06 , H04B3/54 , H04L25/49 , G08B23/00 , H04M11/04
CPC分类号： G08B25/06 , G08B26/002 , H02J13/0024 , H04B3/54 , H04B2203/5483 , H04B2203/5491 , Y02E60/7823 , Y02E60/7892 , Y04S40/122 , Y04S40/146
摘要： A centralized monitor system can be automatically controlled so that the signal receiving levels in each component of the system can be held at an optimum position even in the presence of noise components, since they are totally free from any failure caused by the noise interference. More particularly, the monitor panel as part of the centralized monitor system collects and displays any alarm information detected by any of the sub units constituting part of the system while using the indoor power line as the data transmission path, enabling the centralized monitor system to generate an alarm upon receipt of such alarm information from the monitor panel, while the automatic receiver gain controller, in responding to an answer back instruction periodically output by the monitor panel, properly controls both the monitor panel and sub units so that both will remain in such positions where their incoming signal levels can be held optimum even under presence of a variety of noise components.
摘要翻译： 可以自动控制集中监控系统，使得即使在存在噪声分量的情况下，系统的每个部件中的信号接收电平都可以保持在最佳位置，因为它们完全没有由噪声干扰引起的任何故障。 更具体地，作为集中监视系统的一部分的监视器面板收集并显示由构成系统的一部分的任何子单元检测到的任何报警信息，同时使用室内电力线作为数据传输路径，使集中监控系统能够产生 在从监视器面板接收到这种报警信息时发出报警，而自动接收机增益控制器响应监视器面板周期性地输出的应答指令，适当地控制监视器面板和子单元，使得两者将保持在这样的状态 即使在存在各种噪声成分的情况下，其输入信号电平也能保持最佳位置。
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