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48 条记录 (耗时 0.032 秒)

    Automatic serialization of an array of wireless nodes based on coupled oscillator model
    1.
    发明授权
    Automatic serialization of an array of wireless nodes based on coupled oscillator model 失效
    基于耦合振荡器模型的无线节点阵列的自动序列化

    公开(公告)号：US6144900A

    公开(公告)日：2000-11-07

    申请号：US62018

    申请日：1998-04-17

    申请人： Irfan Ali ,  Michael Paul Weir ,  Kenneth Brakeley Welles, II

    发明人： Irfan Ali ,  Michael Paul Weir ,  Kenneth Brakeley Welles, II

    IPC分类号： B61L15/00 ,  G05D1/00 ,  G06F7/00

    CPC分类号： B61L15/0027 ,  B61L15/0054

    摘要： A linking process allows a head-end unit (HEU) of a railroad train to determine the sequence of cars in the train using wireless links between nodes on the cars, and requires no physical connection between the nodes or cars. Each car in the train is equipped with a wireless communication device which models an oscillator i. Each oscillator is phase-variable, the phase .theta..sub.i linearly increasing from 0 to 1 such that, when the i.sup.th oscillator "fires", transmitting a packet, and phase .theta..sub.i then jumps back to zero. When a car receives the transmission of another car, it changes the phase of its oscillator according to a phase-response curve function, setting up a wave pattern of transmission from nodes, from one end of the train to the other end. The wave pattern, along with protocol logic, enables each car to determine the sequence in which cars are arranged in its vicinity. The protocol logic also enables each car to forward or relay this "local map" from all cars to the HEU, allowing the HEU to construct the entire train map which is the sequence of cars in the train. The compiled train map is compared with consist information and the operator is notified of any discrepancy.

    摘要翻译： 链接过程允许铁路车站的头端单元（HEU）使用汽车上的节点之间的无线链路来确定列车中的轿厢的顺序，并且不需要节点或汽车之间的物理连接。 列车中的每辆车配备了一个无线通信设备，可以对振荡器进行建模。 每个振荡器是相位可变的，相位θi从0线性增加到1，使得当第i个振荡器“发射”时，发送一个分组，然后相位θi跳回到零。 当汽车接收到另一辆车的发射时，根据相位响应曲线函数改变其振荡器的相位，从节点的一端建立从列车的一端到另一端的传输波形。 波形与协议逻辑一起使每辆车能够确定汽车在其附近排列的顺序。 协议逻辑还使每辆车能够将所有车辆的“本地地图”转发或传递到HEU，从而允许HEU构建列车中的列车序列的整个列车地图。 将编译的火车地图与组合信息进行比较，并向运营商通报任何差异。

    System for detecting broken rails and flat wheels in the presence of trains
    2.
    发明授权
    System for detecting broken rails and flat wheels in the presence of trains 失效
    用于在火车存在下检测断轨和平轮的系统

    公开(公告)号：US5743495A

    公开(公告)日：1998-04-28

    申请号：US799502

    申请日：1997-02-12

    申请人： Kenneth Brakeley Welles, II ,  Irfan Ali

    发明人： Kenneth Brakeley Welles, II ,  Irfan Ali

    IPC分类号： B61L23/04

    CPC分类号： B61L23/044 ,  B61L23/047

    摘要： A redundant sensor system for predicting railway hazards including breaks in each rail, the location of the breaks, and determining when a railway vehicle has a flat wheel. Vibration sensors are distributed along both rails of a railway. Each sensor has a detection band at least within the sensing range of adjacent sensors and it is positioned such that the sensor detects vibration in both the horizontal and vertical axis of the rail. A central processor evaluates the data from these sensors and identifies the rail break, the location of the break, and the flat wheel.

    摘要翻译： 一种用于预测铁路危险的冗余传感器系统，包括每个轨道的断裂，断路的位置，以及确定铁路车辆何时具有平坦轮。 振动传感器沿铁路两条轨道分布。 每个传感器具有至少在相邻传感器的感测范围内的检测带，并且其定位成使得传感器检测轨道的水平轴和垂直轴的振动。 中央处理器对这些传感器的数据进行评估，并识别轨道断裂，断路位置和平面轮。

    Pressure sensors
    3.
    发明授权
    Pressure sensors 失效
    压力传感器

    公开(公告)号：US5817943A

    公开(公告)日：1998-10-06

    申请号：US823261

    申请日：1997-03-24

    申请人： Kenneth Brakeley Welles, II ,  Michael Paul Weir

    发明人： Kenneth Brakeley Welles, II ,  Michael Paul Weir

    IPC分类号： G01L11/00 ,  G01L9/12

    CPC分类号： G01L11/008

    摘要： A pressure sensor having structure for generating a magnetic force to balance forces on opposing sides of a flexible diaphragm centered within a pressure chamber allows fluid pressure to be introduced into the chamber on one side of the diaphragm. A first magnetic coil is positioned on another side of the diaphragm and a second coil is mounted to the diaphragm. When fluid pressure is introduced into the pressure chamber, the diaphragm deflects, and the magnitude of current required to generate a recentering magnetic force which causes the diaphragm to be recentered constitutes a measure of the fluid pressure. Since the recentering magnetic force is substantially unaffected by temperature, the fluid pressure measurement obtained is substantially independent of temperature.

    摘要翻译： 具有用于产生磁力以平衡在压力室内的柔性隔膜的相对侧上的力的结构的压力传感器允许流体压力被引入隔膜一侧的室中。 第一电磁线圈位于隔膜的另一侧，第二线圈安装在隔膜上。 当流体压力被引入压力室时，隔膜偏转，并且产生引起隔膜重新调整的重新产生磁力所需的电流大小构成流体压力的量度。 由于重新调制的磁力基本上不受温度的影响，所获得的流体压力测量基本上与温度无关。

    Use of wideband DTV overlay signals for brevity signaling and public safety
    6.
    发明授权
    Use of wideband DTV overlay signals for brevity signaling and public safety 有权
    使用宽带数字电视覆盖信号进行简洁信号和公共安全

    公开(公告)号：US06498627B1

    公开(公告)日：2002-12-24

    申请号：US09422441

    申请日：1999-10-21

    申请人： John Erik Hershey ,  Mark Lewis Grabb ,  Kenneth Brakeley Welles, II

    发明人： John Erik Hershey ,  Mark Lewis Grabb ,  Kenneth Brakeley Welles, II

    IPC分类号： H04N521

    CPC分类号： H04N21/8146 ,  H04L27/28 ,  H04N5/211 ,  H04N5/44508 ,  H04N7/08 ,  H04N21/4432 ,  H04N21/478 ,  H04N21/814

    摘要： A brevity signaling module for a digital television (DTV) receiver enables the reception of emergency broadcast messages. The overlay signal received at the receiver front end is squared in a squaring loop, producing spectral lines at DC and twice the overlay signal frequency, or 2&ohgr;, where &ohgr;=2&pgr;f and f is the center frequency of the overlay signal. The squared signal is passed through a narrow band filter having a bandwidth sufficient to pass a spectrum containing a plurality of tones 2&ohgr;, 2&ohgr;1, 2&ohgr;2, . . . , 2&ohgr;n, where 2&ohgr;1, 22, . . . , 2&ohgr;n are different frequency tones assigned to different auxiliary functions. The detected tone is used by a control module to determine whether normal multipath processing should be performed or whether this processing should be suppressed and auxiliary functions performed, including turning on the DTV receiver power in order that an emergency broadcast message might be conveyed to persons in the vicinity of the DTV receiver.

    摘要翻译： 用于数字电视（DTV）接收机的简洁信号模块能够接收紧急广播消息。 在接收机前端接收的覆盖信号在平方环中平方，产生DC和两倍叠加信号频率的频谱线，或2omega，其中ω= 2pif，f是叠加信号的中心频率。 平方信号通过具有足以通过包含多个音调2omega，2omega1，2omega2的频谱的带宽的窄带滤波器。 。 。 ，2omegan，其中2omega1,22。 。 。 ，2omegan是分配给不同辅助功能的不同频率音调。 检测到的音调由控制模块用于确定是否应执行正常的多路径处理，还是应该抑制该处理和执行辅助功能，包括接通DTV接收机的功率，以便将紧急广播消息传送给 DTV接收机附近。

    Three-dimensional channel sounder for DTV receivers
    7.
    发明授权
    Three-dimensional channel sounder for DTV receivers 有权
    用于DTV接收机的三维通道发声器

    公开(公告)号：US06417805B1

    公开(公告)日：2002-07-09

    申请号：US09422443

    申请日：1999-10-21

    申请人： John Erik Hershey ,  Mark Lewis Grabb ,  Kenneth Brakeley Welles, II

    发明人： John Erik Hershey ,  Mark Lewis Grabb ,  Kenneth Brakeley Welles, II

    IPC分类号： G01S302

    CPC分类号： G01S13/003 ,  H04N5/211 ,  H04N5/44 ,  H04N17/00

    摘要： A digital television (DTV) receiver is provided with a sounder comprising a wideband transmitter and a plurality of wideband receivers having separately located receiving antennas, so that the sounder is, in effect, a bistatic radar system for any given channel, in order to characterize a significant nearby, indoor reflector. A microprocessor receives the timing information generated by the wideband transmitter impulses and the reflected impulse returns to each of the receiving antennas, and calculates a multipath model representing the three-dimensional location of a significant, nearby scatterer.

    摘要翻译： 数字电视（DTV）接收机设置有包括宽带发射机和具有单独定位的接收天线的多个宽带接收机的发声器，使得发声器实际上是用于任何给定信道的双基地雷达系统，以便表征 一个重要的附近的室内反射器。 微处理器接收由宽带发射机脉冲产生的定时信息，并且反射的脉冲返回到每个接收天线，并且计算表示重要的附近散射体的三维位置的多径模型。

    GPS-based centralized tracking system with reduced energy consumption
    8.
    发明授权
    GPS-based centralized tracking system with reduced energy consumption 失效
    基于GPS的集中跟踪系统，能耗降低

    公开(公告)号：US6104978A

    公开(公告)日：2000-08-15

    申请号：US55336

    申请日：1998-04-06

    申请人： Daniel David Harrison ,  Kenneth Brakeley Welles, II

    发明人： Daniel David Harrison ,  Kenneth Brakeley Welles, II

    IPC分类号： G01S5/00 ,  G01S5/14 ,  G01S19/42 ,  H04B7/185 ,  G01S5/02

    CPC分类号： G01S19/09 ,  G01S19/243 ,  G01S19/25 ,  G01S19/34 ,  G01S5/0036

    摘要： A communication method reduces both the asset energy requirements and communication channel occupancy in a reduced order GPS asset tracking system. The asset is provided with an indication of its position so as to allow detection of substantial movement of the asset at the asset. Reduced order GPS data derived at the asset, such as a railcar, is compressed to allow for shorter railcar data transmission times. This, in turn, reduces both the transmitter energy requirements and communication-channel occupancy, while allowing substantial railcar position changes to be conveniently detected at the railcar. This capability can be used to save further substantial railcar energy by, for example, reporting to the central station less frequently when the railcar position is unchanging.

    摘要翻译： 通信方法降低了GPS资产跟踪系统中的资源能量需求和通信信道占用。 该资产被提供其位置的指示，以便能够检测资产在资产上的实质性变动。 在诸如轨道车辆等资产处导出的降序GPS数据被压缩以允许更短的轨道车辆数据传输时间。 这又降低了发射机能量需求和通信信道占用，同时允许在轨道车辆方便地检测到大量的轨道车辆位置变化。 这种能力可以用于通过例如当轨道车位置不变时更不频繁地向中心站报告来节省进一步的轨道车辆能量。

    Local communication network for power reduction and enhanced reliability in a multiple node tracking system
    10.
    发明授权
    Local communication network for power reduction and enhanced reliability in a multiple node tracking system 失效
    多节点跟踪系统的本地通信网络，用于降低功率并提高可靠性

    公开(公告)号：US5691980A

    公开(公告)日：1997-11-25

    申请号：US484750

    申请日：1995-06-07

    申请人： Kenneth Brakeley Welles, II ,  Jerome Johnson Tiemann ,  Sandeep Chennakeshu ,  Harold Woodruff Tomlinson, Jr.

    发明人： Kenneth Brakeley Welles, II ,  Jerome Johnson Tiemann ,  Sandeep Chennakeshu ,  Harold Woodruff Tomlinson, Jr.

    IPC分类号： G01C21/00 ,  B61L25/02 ,  G01S5/00 ,  G01S19/03 ,  G01S19/21 ,  G07C5/00 ,  G08B25/04 ,  G08G1/127 ,  H04B7/212 ,  H04L12/28 ,  H04B7/185

    CPC分类号： H04W84/20 ,  B61L25/021 ,  B61L25/025 ,  G01S5/0027 ,  G08G1/127 ,  B61L2205/04 ,  G01S2205/002 ,  Y02B60/50

    摘要： A mobile local area network (LAN) of tracked assets utilizing minimal power and bandwidth allows a large number of assets to be tracked in a practical manner. The mobile LAN is established between a plurality of tracking units in close proximity. Assets are approximately located according to their connection in the mobile LAN where the exact location of at least one of the network nodes is known. Each tracked asset has capability to independently determine and report its position to a central station, and each asset also has capability to communicate locally with other cooperative assets via the LAN. The LAN is dynamically reconfigurable so that as other cooperative assets come into proximity, they can join the network, and as others move away, they can leave the network. Within the network, a protocol is followed which assigns one of the assets to be the "master" and all others to be "slaves". The master asset takes responsibility for determining its own exact geographical position via LORAN, OMEGA, Global Positioning System (GPS) or other navigational aid. When connected in a LAN, slave assets report their ID to the master asset and do not determine their own locations in order to conserve power. The master reports its location and ID, as well as the IDs of the other assets in the LAN, to the central station. Uncertainty in the location of a slave asset is limited by the known possible geographical extent of the LAN which is known a priori.

    摘要翻译： 使用最小功率和带宽的跟踪资产的移动局域网（LAN）允许以实际的方式跟踪大量资产。 在紧邻的多个跟踪单元之间建立移动LAN。 资产大致上根据它们在移动LAN中的连接而定位，其中至少一个网络节点的确切位置是已知的。 每个跟踪资产都有能力独立地确定并向中心站报告其位置，每个资产还具有通过局域网与其他合作资产进行本地通信的能力。 LAN可动态重新配置，以便随着其他合作资产的接近，他们可以加入网络，而随着其他人的移动，他们可以离开网络。 在网络中，遵循一个协议，将一个资产分配为“主”，所有其他资源都将作为“从属”。 主资产负责通过LORAN，OMEGA，全球定位系统（GPS）或其他导航辅助来确定其自己的确切地理位置。 当连接到局域网时，从属资产将其ID标识为主资产，并且不确定自己的位置以节省电力。 主人将其位置和ID以及LAN中其他资产的ID报告给中心站。 从属资产位置的不确定性受到先验已知的LAN已知可能的地理范围的限制。