公开(公告)号：US20080191937A1

公开(公告)日：2008-08-14

申请号：US12028894

申请日：2008-02-11

申请人： David S. WISHERD ,  Robert W. Boyd ,  Tom Richardson ,  Santiago Romero ,  Michael A. Wohl

发明人： David S. WISHERD ,  Robert W. Boyd ,  Tom Richardson ,  Santiago Romero ,  Michael A. Wohl

IPC分类号： G01S5/14

CPC分类号： G01S19/07 ,  G01S19/09

摘要： A location system for tracking assets within a terminal includes a Differential Global Positioning System (DGPS) reference receiver within the terminal that receives GPS signals and generates DGPS correction data. In one aspect, a roving receiver unit is carried by an asset to be tracked within the terminal. It includes a GPS receiver that receives GPS signals and the DGPS correction data from the DGPS reference receiver. A tag transmitter transmits a wireless RF signal containing GPS location data based on received GPS signals and DGPS correction data. At least one access point is positioned within the terminal for receiving the wireless RF signal from the tag transmitter. A processor is operatively connected to the at least one access point for receiving GPS location data and determining a location of the asset to be tracked.

摘要翻译： 用于跟踪终端内的资产的位置系统包括终端内的差分全球定位系统（DGPS）参考接收机，其接收GPS信号并产生DGPS校正数据。 在一个方面，粗纱接收机单元由在终端内跟踪的资产携带。 它包括GPS接收器，其接收来自DGPS参考接收机的GPS信号和DGPS校正数据。 标签发送器基于接收到的GPS信号和DGPS校正数据发送包含GPS位置数据的无线RF信号。 至少一个接入点位于终端内，用于从标签发射器接收无线RF信号。 处理器可操作地连接到所述至少一个接入点，用于接收GPS位置数据并确定要跟踪的资产的位置。

公开(公告)号：US20080130604A1

公开(公告)日：2008-06-05

申请号：US11949080

申请日：2007-12-03

申请人： Robert W. BOYD

发明人： Robert W. BOYD

IPC分类号： H04Q7/24 ,  G01S3/02

CPC分类号： G01S5/021 ,  G01S5/0252 ,  G01S5/0263 ,  G01S5/06 ,  H04W24/00 ,  H04W64/00 ,  H04W84/12 ,  H04W88/06 ,  H04W88/10

摘要： A wireless local area network includes a plurality of access point stations that receive and transmit communications signals within the wireless local area network. A first set of access point stations are WiFi compliant and measure signal strength and determine the received signal strength indication (RSSI). A second set of access point stations are operable in accordance with the time of arrival (TOA) real time location standard (RTLS). A dual mode mobile station is operative for multimode communication with both the WiFi and RTLS compliant access point stations. A location processor is operatively connected with each of the access point stations and processes the RSSI and creates a RSSI locate map and processes communication signals from the second set of access point stations and determines which signals are first-to-arrive signals to locate the mobile station and update the RSSI locate map and locate any non-dual mode WiFi devices.

摘要翻译： 无线局域网包括在无线局域网内接收和发送通信信号的多个接入点站。 第一组接入点站符合WiFi标准，并测量信号强度并确定接收到的信号强度指示（RSSI）。 第二组接入点站可以根据到达时间（TOA）实时定位标准（RTLS）来操作。 双模式移动台可操作用于与WiFi和RTLS兼容接入点站的多模通信。 位置处理器与每个接入点站可操作地连接并处理RSSI并创建RSSI定位图并处理来自第二组接入点站的通信信号，并确定哪些信号是首先到达信号以定位移动站 并更新RSSI定位图，并找到任何非双模式WiFi设备。

公开(公告)号：US20070252728A1

公开(公告)日：2007-11-01

申请号：US11414940

申请日：2006-05-01

申请人： David Wisherd ,  Timothy Harrington ,  Samuel Levy

发明人： David Wisherd ,  Timothy Harrington ,  Samuel Levy

IPC分类号： G08G1/01 ,  G07B15/00 ,  G08B13/14

CPC分类号： G07B15/02 ,  G07B15/063

摘要： A system and method controls entry or exit of a vehicle to or from a vehicle lot. A tag transmitter is adapted to be mounted on a vehicle for transmitting a wireless RF signal that includes vehicle data relating to the vehicle. A lane sensor is associated with a vehicle lane through which vehicles pass for at least one of entering and exiting the vehicle lot and is configured to receive wireless RF signals from the tag transmitter when the vehicle is in the vehicle lane, while substantially rejecting wireless RF signals from other tag transmitters mounted on other vehicles within the vehicle lot or in an adjacent vehicle lane. A processor is operatively connected to the lane sensor and receives and processes the vehicle data to validate and control the vehicle's entry or exit to or from the vehicle lot.

摘要翻译： 一种系统和方法控制车辆进出车辆的车辆。 标签发送器适于安装在车辆上，用于发送包括与车辆相关的车辆数据的无线RF信号。 车道传感器与车道相关联，车辆通过车辆进入和离开车辆批次中的至少一个，并且被配置为当车辆在车辆通道中时从标签发送器接收无线RF信号，同时基本上拒绝无线RF 来自安装在车辆批次内的其他车辆或相邻车道中的其他标签发射器的信号。 处理器可操作地连接到车道传感器，并接收和处理车辆数据以验证和控制车辆进出车辆批次。

公开(公告)号：US20070248180A1

公开(公告)日：2007-10-25

申请号：US11696202

申请日：2007-04-04

申请人： Douglas C. Bowman ,  Huong M. Han

发明人： Douglas C. Bowman ,  Huong M. Han

IPC分类号： H04L27/10

CPC分类号： G01V15/00

摘要： A communications system, such as part of a real-time location system, includes a transmitter that can be part of a location processor, tag emission reader or tag interrogator that generates a frequency shift key (FSK) modulated wireless communication signal representative of digital data and transmits the communications signal over a wireless communications channel. A receiver such as incorporated within a tag transceiver used in the real-time location system receives the FSK modulated communication signal. The receiver includes a circuit for calculating the magnitude of low and high tones of the FSK modulated communication signal and a threshold for amplitude shift keyed (ASK) channel data and FSK channel data to derive the digital data even in the presence of on-tone jammers in the communications channel.

摘要翻译： 诸如实时定位系统的一部分的通信系统包括可以是位置处理器，标签发射读取器或标签询问器的一部分的发射器，其产生代表数字数据的频移键（FSK）调制的无线通信信号 并通过无线通信信道发送通信信号。 诸如并入在实时定位系统中使用的标签收发机内的接收机接收FSK调制通信信号。 该接收机包括用于计算FSK调制通信信号的低音和高音调的幅度的电路以及用于幅移键控（ASK）通道数据和FSK通道数据的阈值，以便即使存在色调干扰的情况也导出数字数据 在通信通道中。

公开(公告)号：US20070230424A1

公开(公告)日：2007-10-04

申请号：US11692250

申请日：2007-03-28

申请人： David S. Wisherd

发明人： David S. Wisherd

IPC分类号： H04Q7/24

CPC分类号： H04W24/10 ,  H04B1/406 ,  H04W64/00 ,  H04W84/12 ,  H04W88/08

摘要： A wireless local area network (WLAN) includes a server and receiver, which includes a radio frequency (RF) front-end circuit that receives wireless signals from the mobile nodes within the WLAN and detects baseband signals. A signal waveform detector edge detects a signal waveform and generates a trigger signal indicative of the modulation type, data format and time-of-arrival (TOA) information of a desired signal to be captured. A baseband processor receives the trigger signal from the signal waveform detector and captures the desired signal. A system controller is connected to the baseband processor and configures the baseband processor for processing the desired signal and obtaining message data and signal metrics that are transferred to the system controller to be communicated outbound from the receiver as a client to the server.

摘要翻译： 无线局域网（WLAN）包括服务器和接收机，其包括从WLAN内的移动节点接收无线信号并检测基带信号的射频（RF）前端电路。 信号波形检测器边缘检测信号波形并产生指示要捕获的期望信号的调制类型，数据格式和到达时间（TOA）信息的触发信号。 基带处理器从信号波形检测器接收触发信号并捕获所​​需的信号。 系统控制器连接到基带处理器，并配置基带处理器，用于处理所需信号，并获取传送到系统控制器的消息数据和信号量度，作为客户端从接收器传出到服务器。

公开(公告)号：US20070176749A1

公开(公告)日：2007-08-02

申请号：US11668569

申请日：2007-01-30

申请人： Robert W. BOYD

发明人： Robert W. BOYD

IPC分类号： H04Q5/22

CPC分类号： G01S5/06 ,  G01S5/021 ,  G01S5/0215 ,  G01S5/0221 ,  H04W64/00 ,  H04W84/12

摘要： A system and method locates a wireless local area network (WLAN) signal source. A wireless LAN signal as an RF signal is propagated from a WLAN signal source at a fixed, known location to a plurality of receivers having unsynchronized clocks. The time-of-arrival is measured at each receiver and the timing relationship from the fixed, known location of the signal source is used to relate time-of-arrival measurements from a signal arriving from an unknown location.

摘要翻译： 系统和方法定位无线局域网（WLAN）信号源。 作为RF信号的无线LAN信号从固定的已知位置的WLAN信号源传播到具有不同步时钟的多个接收机。 在每个接收机处测量到达时间，并且使用来自信号源的固定的已知位置的定时关系来将来自未知位置的信号的到达时间测量值相关联。

公开(公告)号：US20030001775A1

公开(公告)日：2003-01-02

申请号：US10137746

申请日：2002-05-02

申请人： WHERENET CORP

发明人： Thomas E. Turner

IPC分类号： G01S005/14 ,  G01S003/02

CPC分类号： G01S5/0284 ,  G01S5/0027 ,  G01S5/06 ,  G01S2205/002

摘要： A system and method for locating an object uses a plurality of tag signal readers that receive wireless tag signals from a tag transmitter coupled with an object to be located. The tag signals include data indicating the identity of the object to which the tag transmitter is coupled. Each tag signal reader includes a global positioning system receiver associated therewith for determining the location of a tag signal reader. A wireless transmitter transmits a wireless data signal incorporating the wireless tag signal and location of the tag signal reader to a location processor, which receives the wireless data signals and determines which tag signals are first-to-arrive signals and conducts differentiation of the first-to-arrive signals to locate a tag transmitter and object coupled therewith.

公开(公告)号：US20020181565A1

公开(公告)日：2002-12-05

申请号：US10138795

申请日：2002-05-03

申请人： WHERENET CORP

发明人： Robert W. Boyd ,  Donald K. Belcher ,  Michael A. Wohl ,  David S. Wisherd

IPC分类号： H04B001/69

CPC分类号： G01S5/0221 ,  G01S5/02 ,  G01S5/0226 ,  H04B1/7075 ,  H04B2201/70715

摘要： A location system includes a plurality of signal readers for receiving signals from a wireless transmitter to be located. The signals include a wideband, spread spectrum signal and a timing marker appended a predetermined time in front of the wideband, spread spectrum signal for indicating the presence of the wideband, spread spectrum signal. A location processor is operatively coupled to the signal readers for detecting the timing markers of signals and responsive to a detection of a timing marker, correlating a signal as a first-to-arrive signal and conducting differentiation of first-to-arrive signals to locate a wireless transmitter.

摘要翻译： 位置系统包括用于从要定位的无线发射机接收信号的多个信号读取器。 信号包括宽带扩频信号和附加在用于指示宽带扩频信号的存在的宽带扩频信号前面的预定时间的定时标记。 位置处理器可操作地耦合到信号读取器，用于检测信号的定时标记并且响应于定时标记的检测，将信号作为第一到到信号进行相关，并且对第一到到达信号进行区分以定位 无线发射机。

公开(公告)号：US07475814B2

公开(公告)日：2009-01-13

申请号：US11287600

申请日：2005-11-28

申请人： Brett A. Wingo ,  Walter S. Johnson ,  Richard W. Benner

发明人： Brett A. Wingo ,  Walter S. Johnson ,  Richard W. Benner

IPC分类号： G07B15/02 ,  G06F19/00 ,  G08B13/14 ,  G08B1/08 ,  H04Q7/00

CPC分类号： B65D90/00 ,  B65D2203/10

摘要： A tag mounting device can temporarily mount a tag transmitter on a shipping container or trailer for tracking location of the shipping container or trailer. The tag mounting device includes a mounting frame having a support leg with opposing ends. A clamp mechanism is carried by the support leg for clamping the support leg onto a rim of a container or trailer such that the support leg extends against a surface of the container or trailer. A tag support member extends outward from the support leg. A tag transmitter is carried by the tag support member and operative for transmitting wireless signals to at least one receiver for subsequent processing to determine the location of the tag transmitter and a container or trailer on which the tag mounting device is mounted.

摘要翻译： 标签安装装置可以将标签发送器临时安装在运输集装箱或拖车上，以跟踪运输集装箱或拖车的位置。 标签安装装置包括具有相对端的支撑腿的安装框架。 夹持机构由支撑腿承载，用于将支撑腿夹持在容器或拖车的边缘上，使得支撑腿抵靠容器或拖车的表面延伸。 标签支撑构件从支撑腿向外延伸。 标签发送器由标签支撑构件承载并用于将无线信号发送到至少一个接收器用于随后的处理，以确定标签发送器及其上安装有标签安装装置的容器或拖车的位置。

公开(公告)号：US20080266131A1

公开(公告)日：2008-10-30

申请号：US12169742

申请日：2008-07-09

申请人： Tom Richardson ,  Santiago Romero ,  David S. Wisherd ,  Michael A. Wohl

发明人： Tom Richardson ,  Santiago Romero ,  David S. Wisherd ,  Michael A. Wohl

IPC分类号： G08B5/22

CPC分类号： G01S19/09 ,  G01S19/07 ,  G01S19/14 ,  G01S19/48

摘要： A system is provided for tracking an asset within a geographic area. The system includes an antenna mast supportable by, and extending upward from, an object configured to move or facilitate movement of the asset. The antenna mast is capable of supporting a plurality of wireless locating units of a plurality of geo-spatial positioning systems, which are configured to locate a respective one or more locating units, and thereby the asset, within the geographic area. The system also includes a controller positionable on the object and configured to control operation of the wireless locating units. The controller is further configured to direct transmission of data to a host via one of the locating units or another wireless transmitter, and in a manner that accounts for a wireless link between the respective locating unit or other wireless transmitter and the host.

摘要翻译： 提供了用于跟踪地理区域内的资产的系统。 该系统包括可被配置为移动或促进资产的移动的物体支撑并向上延伸的天线桅杆。 天线桅杆能够支持多个地理 - 空间定位系统的多个无线定位单元，其被配置为在地理区域内定位相应的一个或多个定位单元，从而定位该资产。 该系统还包括可定位在对象上并被配置为控制无线定位单元的操作的控制器。 所述控制器还被配置成通过所述定位单元或另一无线发射机中的一个将所述数据直接传送到主机，并且以考虑到相应定位单元或其他无线发射机与所述主机之间的无线链路的方式。