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    • 2. 发明授权
    • Data transmission system with data verification
    • 数据传输系统具有数据验证功能
    • US4839642A
    • 1989-06-13
    • US106938
    • 1987-10-08
    • James E. BatzDennis J. MartellSteven A. Overmyer
    • James E. BatzDennis J. MartellSteven A. Overmyer
    • G01D4/00H04Q9/14
    • G01D4/006H04Q9/14Y02B90/243Y04S20/325
    • A system for selectively obtaining information from a plurality of remotely located data indicating devices includes an interrogate source and a plurality of transponders each associated with a different one of the data indicating devices. The interrogate source transmits an interrogate signal for effecting the readout of a selected indicating device, the interrogate signal being a high frequency carrier amplitude modulated with a pair of low frequency signals to represent an eight bit sync code word, a four bit command word and a twenty-eight bit identification code word for addressing a selected transponder. Each transponder includes a receiver which detects the low frequency modulating signals and generates a short duration pulse corresponding to the leading edge of each modulating signal, a processor operating under program control to check on a bit-by-bit basis each bit of the sync code word and of the identification code word as it is received by timing the duration between the receiver generated pulses, and to thereafter compare the first eight bits with a stored sync word and the bits corresponding to the identification word with a stored identification word, the processor responding to the interrogate signal to activate a transmitter to transmit the information provided by the associated indicating device only if the signals detected by the receiver are within a preselected range of frequencies and if a valid sync word and a valid identification word are received.
    • 用于从多个远程位置的数据指示装置中选择性地获取信息的系统包括询问源和多个与不同数据指示装置相关联的转发器。 询问源发送询问信号以进行所选择的指示设备的读出,询问信号是用一对低频信号调制的高频载波振幅,以表示八位同步码字,四位指令字和 用于寻址所选转发器的二十八位识别码字。 每个应答器包括一个接收机,它检测低频调制信号并产生一个对应于每个调制信号的前沿的短持续时间脉冲,一个在程序控制下操作的处理器,以逐位检查同步码的每一位 字和识别码字,因为它是通过定时接收器产生的脉冲之间的持续时间来接收的,并且此后将前8位与存储的同步字和与识别字对应的位与存储的识别字进行比较,处理器 只有当接收机检测到的信号处于预选的频率范围内并且如果接收到有效的同步字和有效的识别字时,响应询问信号激活发射机才发送由相关的指示装置提供的信息。
    • 5. 发明授权
    • Remote data collection and monitoring system for distribution line
    • 配电线路远程数据采集和监控系统
    • US5381136A
    • 1995-01-10
    • US34504
    • 1993-03-19
    • Robert D. PowersHarold L. Ryterski
    • Robert D. PowersHarold L. Ryterski
    • G08B25/10G08B1/08
    • G08B25/10
    • A remote logger unit monitors various operating parameters of a distribution line, or transmission system, such as pressure, temperature and flow such as for natural gas, water or oil, and alerts a central controller via an RF link when predetermined operating limits as determined by the logger unit are exceeded. A plurality of such remote logger units may be employed along the length of the distribution line for monitoring the complete system, with the reports of more distant logger units routed to the central controller via closer logger units. Each logger unit is passive in operation, autonomous and entirely independent of the central controller, and also provides routine operation data to the central controller when prompted, or at designated time intervals. The reported data includes the identity of the logger unit, the nature of the data or alert, and the time and date of the report.
    • 远程记录器单元监视分配线或传输系统的各种操作参数,例如压力,温度和流量,例如天然气,水或油,并且当预定的操作限度由 超出了记录器单位。 可以沿着分配线的长度采用多个这样的远程记录器单元,用于监视整个系统,其中更远的记录器单元的报告通过更接近的记录器单元路由到中央控制器。 每个记录器单元是被动的,自主的,完全独立于中央控制器,并且在提示时或以指定的时间间隔向中央控制器提供常规操作数据。 报告的数据包括记录器单元的身份,数据或警报的性质,以及报告的时间和日期。
    • 6. 发明授权
    • Pipe seal
    • 管密封
    • US5365977A
    • 1994-11-22
    • US160485
    • 1993-12-01
    • Robert L. GoadRonald G. Marotta
    • Robert L. GoadRonald G. Marotta
    • B66C1/42F16L55/18F16L55/168
    • F16L55/18B66C1/427Y10S414/125
    • Apparatus for covering an opening in a pipe and sealing a gas or fluid leak includes first and second pipe engaging blocks coupled to a frame. With the second block fixedly mounted to the frame and the first block movable along the frame by means of a hydraulic cylinder coupled thereto, the first block is positioned over and seals the leak under the force of hydraulic pressure. The frame includes first and second mounting arrangements for attaching an articulated boom such as on a backhoe to either an end of the frame (for positioning the apparatus in a generally upright orientation) or to an intermediate portion of the frame (for positioning the apparatus in an inclined orientation). The position of the second block along the length of the frame is adjustable depending upon the diameter of the pipe. A guide rod couples the movable first block to the frame to ensure linear displacement of the first block and proper alignment between the first and second blocks during engagement of the pipe. An attachment arrangement is also provided for mounting the apparatus to the entrenching bucket of a backhoe.
    • 用于覆盖管道中的开口并密封气体或流体泄漏的装置包括联接到框架的第一和第二管接合块。 当第二块固定地安装到框架上,并且第一块通过联接到其上的液压缸可沿着框架移动时,第一块被定位在液压力的作用下,并且密封泄漏。 框架包括第一和第二安装装置,用于将铰接式起重臂(例如在反铲上)附接到框架的一端(用于将装置以大致竖直的方向定位)或框架的中间部分(用于将装置定位在 倾斜的方向)。 沿着框架长度的第二块的位置可根据管的直径而调节。 引导杆将可移动的第一块联接到框架以确保第一块的线性位移并且在管的接合期间在第一和第二块之间的适当对准。 还提供了一种用于将设备安装到反铲的固定桶中的附接装置。
    • 7. 发明授权
    • Low profile antenna for data transponders
    • 用于数据转发器的低调天线
    • US4366486A
    • 1982-12-28
    • US244017
    • 1981-03-16
    • Peter P. Toulios
    • Peter P. Toulios
    • G01D4/00H01Q1/32H01Q9/36H01Q1/36
    • H01Q1/3275G01D4/006H01Q9/36Y02B90/243Y04S20/325
    • A top-loaded low profile antenna for data transponders includes an antenna pin mounted vertically, affording vertical polarization for the antenna, an aluminum plate mounted in a horizontal plane and connected to an upper end of the pin, providing top-loading of the antenna, the plate being supported by a lucite frame mounted on an upper surface of the data transponder and which also dielectrically loads the antenna feed region. The load plate and lucite frame enclose the antenna pin so that the antenna is less susceptible to vandalism, and the top-loading results in a reduction in the height of the antenna structure improving the aesthetics of the antenna and data transponder installation.
    • 用于数据转发器的顶部负载低轮廓天线包括垂直安装的天线引脚,为天线提供垂直极化,安装在水平平面中并连接到引脚的上端的铝板,提供天线的顶部加载, 该板由安装在数据转发器的上表面上的透明框架支撑,并且还介电地加载天线馈送区域。 负载板和透明框架包围天线引脚,使得天线不易受到破坏,顶部加载导致天线结构的高度降低,从而改善了天线和数据转发器安装的美观性。
    • 9. 发明授权
    • Data transmission system including an RF transponder for generating a
broad spectrum of intelligence bearing sidebands
    • 数据传输系统包括用于产生广泛的智能带边带的RF应答器
    • US3967202A
    • 1976-06-29
    • US491829
    • 1974-07-25
    • James E. Batz
    • James E. Batz
    • G01S13/78H04L1/04H04L27/12H04L27/152H04B1/59G01S9/56
    • H04L27/12G01S13/78H04L1/04H04L27/152
    • A data transmission system for obtaining information from a plurality of data sources includes an interrogate source for transmitting RF interrogate signals to the locations of the data sources and a transponder associated with each data source for receiving the interrogate signals and for generating RF reply signals representing the information. The transponder includes a transmitter having a voltage controlled oscillator responsive to data signals at first and second levels to generate sinusoidal output signals at first and second frequencies, respectively, a wave shaping circuit which converts the output signals to sawtooth wave signals at the corresponding frequencies and an FM oscillator for providing a carrier signal which is modulated by the sawtooth signals to produce a broad spectrum of sideband signals of approximately equal amplitude.
    • 用于从多个数据源获取信息的数据传输系统包括用于将RF询问信号发送到数据源的位置的询问源和与每个数据源相关联的应答器,用于接收询问信号并产生表示 信息。 应答器包括发射机,其具有响应于第一和第二电平的数据信号的压控振荡器,分别在第一和第二频率处产生正弦输出信号;波形整形电路,其将输出信号转换成相应频率处的锯齿波信号;以及 FM振荡器,用于提供由锯齿波信号调制的载波信号,以产生近似相等幅度的宽带边带信号。