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公开(公告)号：US08660110B2
公开(公告)日：2014-02-25
申请号：US13134339
申请日：2011-06-06
IPC分类号： H04J3/06
CPC分类号： H04W56/009 , H04J3/0664 , H04J3/0667 , H04W4/70 , H04W52/0216 , H04W52/0229 , Y02D70/142 , Y02D70/144
摘要： Synchronizing at least one wireless sensor includes sending at least one reference message along with a request for acquired data from an access point to the at least one wireless sensor, where the reference message includes a first timestamp indicating when the reference message was sent according to time of a clock of the access point, receiving from the at least one wireless sensor a response that includes the requested data, the first timestamp, and at least one other timestamp corresponding to time of a clock of the at least one wireless sensor, and determining a relative clock offset of the at least one wireless sensor using the timestamps.
摘要翻译： 同步至少一个无线传感器包括将至少一个参考消息与从接入点到所述至少一个无线传感器的所获取数据的请求一起发送，其中所述参考消息包括指示根据时间发送所述参考消息何时的第一时间戳 接收点的时钟，从至少一个无线传感器接收包括所请求的数据，第一时间戳和对应于至少一个无线传感器的时钟的时间的至少一个其他时间戳的响应，以及确定 使用所述时间戳的所述至少一个无线传感器的相对时钟偏移。
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公开(公告)号：US20110255528A1
公开(公告)日：2011-10-20
申请号：US12799087
申请日：2010-04-16
IPC分类号： H04J3/06
CPC分类号： H04W56/009 , H04J3/0667
摘要： Wireless communication may be provided between an access point and one or more wireless devices, such as wireless sensors used in avionics applications for sensing, monitoring and control systems. Synchronization of wireless devices may be required so that certain actions, such as data acquisition, are performed at precisely controlled time instances. The system described herein provides for rapid synchronization of wireless devices that does not require the use of prior timing data and that may be performed without communication directly between the wireless devices. Further, techniques are provided for addressing packet losses and packet propagation delays.
摘要翻译： 可以在接入点和一个或多个无线设备之间提供无线通信，诸如用于感测，监控和控制系统的航空电子应用中使用的无线传感器。 可能需要无线设备的同步，以便在精确控制的时间实例上执行某些动作，例如数据采集。 本文描述的系统提供了无需使用先前的定时数据并且可以在无线设备之间直接进行通信的情况下执行的无线设备的快速同步。 此外，提供了用于寻址分组丢失和分组传播延迟的技术。
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公开(公告)号：US08023443B2
公开(公告)日：2011-09-20
申请号：US12156572
申请日：2008-06-03
IPC分类号： G08C17/00
CPC分类号： G01D21/00 , H04W52/0225 , H04W84/18
摘要： Providing wireless communication between an access point and a wireless device includes the wireless device operating in a first reduced power mode for a first period of time, where the wireless device does not receive communications while operating in the first reduced power mode and includes the wireless device operating in a full power mode for a second period of time, where the wireless device transitions back into the first reduced power mode in response to there being no communication from the access point to the wireless device during the second period of time. The wireless device may be a wireless sensor. In response to the access point directing the wireless sensor to collect data at a particular collection time, the wireless sensor may enter the first reduced power mode for a time prior to the collection time.
摘要翻译： 在接入点和无线设备之间提供无线通信包括在第一时间段内以第一降低功率模式操作的无线设备，其中无线设备在以第一降低功率模式操作的同时不接收通信，并且包括无线设备 在全功率模式下操作第二时间段，其中无线设备响应于在第二时间段期间没有从接入点到无线设备的通信而转换回第一降低功率模式。 无线设备可以是无线传感器。 响应于接入点指示无线传感器在特定采集时间收集数据，无线传感器可以在收集时间之前的一段时间内进入第一降低功率模式。
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14.发明授权Alternative direct sequence spread spectrum symbol to chip mappings and methods for generating the same 失效替代的直接序列扩频符号到码片映射及其生成方法公开(公告)号：US07903720B2
公开(公告)日：2011-03-08
申请号：US11818031
申请日：2007-06-13
IPC分类号： H04B1/00
CPC分类号： H04J13/10 , H04J13/004
摘要： Alternative direct sequence spread spectrum symbol to chip mappings and methods for generating the same for use in a direct sequence spread spectrum wireless protocol and embedded in a transceiver chip used by wireless subsystems are provided. The present invention discloses alternative symbol to chip mappings that are orthogonal or nearly orthogonal to the N/2 unused chip sequences defined by a standard transmission protocol. The present invention is advantageous because it provides for an increased number of users and better reliability for wireless subsystems operating in increasingly overcrowded frequency bands. Other advantages of the present invention include a reduction in the negative effects of clear channel assessment including delayed or cancelled signal transmission and interference for wireless subsystems that transmit time-sensitive data.
摘要翻译： 提供了替代的直接序列扩频符号到芯片映射及其生成方法，用于直接序列扩频无线协议并嵌入到无线子系统使用的收发器芯片中。 本发明公开了与由标准传输协议定义的N / 2未使用的码片序列正交或几乎正交的备选码元到码片映射。 本发明是有利的，因为它为越来越拥挤的频带中运行的无线子系统提供了更多的用户和更好的可靠性。 本发明的其它优点包括减少透明信道评估的负面影响，包括延迟或取消的信号传输和干扰传送时间敏感数据的无线子系统。
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15.发明授权Method for distinguishing a smoke condition from a dust condition using video images 失效使用视频图像区分烟雾状况与灰尘状况的方法公开(公告)号：US07729510B2
公开(公告)日：2010-06-01
申请号：US12221244
申请日：2008-07-31
IPC分类号： G06K9/00
CPC分类号： B64D45/0015 , B64D2045/0035 , G06K9/00771 , G06K9/626 , G06K9/629 , G06K9/6293 , G06T7/254 , G08B17/125
摘要： Detecting video phenomena, such as fire in an aircraft cargo bay, includes receiving a plurality of video images from a plurality of sources, compensating the images to provide enhanced images, extracting features from the enhanced images, and combining the features from the plurality of sources to detect the video phenomena. Extracting features may include determining an energy indicator for each of a subset of the plurality of frames. Detecting video phenomena may also include comparing energy indicators for each of the subset of the plurality of frames to a reference frame. The reference frame corresponds to a video frame taken when no fire is present, video frame immediately preceding each of the subset of the plurality of frames, or a video frame immediately preceding a frame that is immediately preceding each of the subset of the plurality of frames. Image-based and non-image based techniques are described herein in connection with fire detection and/or verification and other applications.
摘要翻译： 检测诸如在飞机货舱中的火灾的视频现象包括从多个源接收多个视频图像，补偿图像以提供增强的图像，从增强的图像中提取特征，以及组合来自多个源的特征 检测视频现象。 提取特征可以包括为多个帧的子集中的每一个确定能量指示符。 检测视频现象还可以包括将多个帧的子集中的每一个的能量指示符与参考帧进行比较。 参考帧对应于不存在火焰时所拍摄的视频帧，紧接在多个帧的子集之前的视频帧，或紧邻在多个帧的子集之前的帧之前的视频帧 。 本文结合火灾探测和/或验证和其他应用来描述基于图像和非图像的技术。
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16.发明申请ROVING WIRELESS SENSOR AND METHOD FOR USE IN A VEHICLE HEALTH AND USAGE MONITORING SYSTEM 有权无线传感器和车辆健康和使用监控系统中的使用方法公开(公告)号：US20090211381A1
公开(公告)日：2009-08-27
申请号：US12038419
申请日：2008-02-27
IPC分类号： G01N19/00
CPC分类号： H04Q9/00 , H04Q2209/43 , H04Q2209/886
摘要： A health and usage monitoring system for use in monitoring health and usage of one or more components of a vehicle. In various embodiments, the present invention uses at least one roving wireless sensor that can be temporarily placed in a first position to monitor one or more components of the vehicle and then moved to another position to monitor one or more other components of the vehicle, thus reducing the total number of sensors used to monitor the vehicle. In some embodiments, a system according to the present invention may comprise at least one or more roving wireless sensors. Other embodiments may comprise one or more roving wireless sensors used in conjunction with one or more wired sensors. The present invention also provides similar embodiments for a method of monitoring the health and usage of one or more components of a vehicle.
摘要翻译： 一种健康和使用监测系统，用于监测车辆的一个或多个部件的健康和使用。 在各种实施例中，本发明使用至少一个粗纱无线传感器，其可暂时放置在第一位置以监视车辆的一个或多个部件，然后移动到另一位置以监视车辆的一个或多个其他部件，因此 减少用于监控车辆的传感器总数。 在一些实施例中，根据本发明的系统可以包括至少一个或多个粗纱无线传感器。 其他实施例可以包括与一个或多个有线传感器结合使用的一个或多个粗纱无线传感器。 本发明还提供了用于监测车辆的一个或多个部件的健康和使用的方法的类似实施例。
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17.发明申请公开(公告)号：US20090040367A1
公开(公告)日：2009-02-12
申请号：US12221186
申请日：2008-07-31
IPC分类号： H04N5/222
CPC分类号： B64D45/0015 , B64D2045/0035 , G06K9/00771 , G06K9/626 , G06K9/629 , G06K9/6293 , G06T7/254 , G08B17/125
摘要： Detecting video phenomena, such as fire in an aircraft cargo bay, includes receiving a plurality of video images from a plurality of sources, compensating the images to provide enhanced images, extracting features from the enhanced images, and combining the features from the plurality of sources to detect the video phenomena. Extracting features may include determining an energy indicator for each of a subset of the plurality of frames. Detecting video phenomena may also include comparing energy indicators for each of the subset of the plurality of frames to a reference frame. The reference frame corresponds to a video frame taken when no fire is present, video frame immediately preceding each of the subset of the plurality of frames, or a video frame immediately preceding a frame that is immediately preceding each of the subset of the plurality of frames. Image-based and non-image based techniques are described herein in connection with fire detection and/or verification and other applications.
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公开(公告)号：US07280696B2
公开(公告)日：2007-10-09
申请号：US10152148
申请日：2002-05-20
IPC分类号： G06K9/68
CPC分类号： G06K9/629 , G06K9/00771 , G06K9/6293 , G08B17/125
摘要： Detecting video phenomena, such as fire in an aircraft cargo bay, includes receiving a plurality of video images from a plurality of sources, compensating the images to provide enhanced images, extracting features from the enhanced images, and combining the features from the plurality of sources to detect the video phenomena. The plurality of sources may include cameras having a sensitivity of between 400 nm and 1000 nm and/or may include cameras having a sensitivity of between 7 and 14 micrometers. Extracting features may include determining an energy indicator for each of a subset of the plurality of frames. Detecting video phenomena may also include comparing energy indicators for each of the subset of the plurality of frames to a reference frame. The reference frame corresponds to a video frame taken when no fire is present, video frame immediately preceding each of the subset of the plurality of frames, or a video frame immediately preceding a frame that is immediately preceding each of the subset of the plurality of frames.
摘要翻译： 检测诸如在飞机货舱中的火灾的视频现象包括从多个源接收多个视频图像，补偿图像以提供增强的图像，从增强的图像中提取特征，以及组合来自多个源的特征 检测视频现象。 多个源可以包括灵敏度在400nm和1000nm之间的摄像机和/或可以包括灵敏度在7和14微米之间的照相机。 提取特征可以包括为多个帧的子集中的每一个确定能量指示符。 检测视频现象还可以包括将多个帧的子集中的每一个的能量指示符与参考帧进行比较。 参考帧对应于不存在火焰时所拍摄的视频帧，紧接在多个帧的子集之前的视频帧，或紧邻在多个帧的子集之前的帧之前的视频帧 。
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19.发明授权Roving wireless sensor and method for use in a vehicle health and usage monitoring system 有权流动无线传感器和用于车辆健康和使用监测系统的方法公开(公告)号：US08402844B2
公开(公告)日：2013-03-26
申请号：US12038419
申请日：2008-02-27
IPC分类号： G01N19/00
CPC分类号： H04Q9/00 , H04Q2209/43 , H04Q2209/886
摘要： A health and usage monitoring system for use in monitoring health and usage of one or more components of a vehicle. In various embodiments, the present invention uses at least one roving wireless sensor that can be temporarily placed in a first position to monitor one or more components of the vehicle and then moved to another position to monitor one or more other components of the vehicle, thus reducing the total number of sensors used to monitor the vehicle. In some embodiments, a system according to the present invention may comprise at least one or more roving wireless sensors. Other embodiments may comprise one or more roving wireless sensors used in conjunction with one or more wired sensors. The present invention also provides similar embodiments for a method of monitoring the health and usage of one or more components of a vehicle.
摘要翻译： 一种健康和使用监测系统，用于监测车辆的一个或多个部件的健康和使用。 在各种实施例中，本发明使用至少一个粗纱无线传感器，其可暂时放置在第一位置以监视车辆的一个或多个部件，然后移动到另一位置以监视车辆的一个或多个其他部件，因此 减少用于监控车辆的传感器总数。 在一些实施例中，根据本发明的系统可以包括至少一个或多个粗纱无线传感器。 其他实施例可以包括与一个或多个有线传感器结合使用的一个或多个粗纱无线传感器。 本发明还提供了用于监测车辆的一个或多个部件的健康和使用的方法的类似实施例。
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20.发明授权Detection and recognition of fog presence within an aircraft compartment using video images 有权使用视频图像检测和识别飞机舱内的雾存在公开(公告)号：US08400502B2
公开(公告)日：2013-03-19
申请号：US12221186
申请日：2008-07-31
CPC分类号： B64D45/0015 , B64D2045/0035 , G06K9/00771 , G06K9/626 , G06K9/629 , G06K9/6293 , G06T7/254 , G08B17/125
摘要： Detecting video phenomena, such as fire in an aircraft cargo bay, includes receiving a plurality of video images from a plurality of sources, compensating the images to provide enhanced images, extracting features from the enhanced images, and combining the features from the plurality of sources to detect the video phenomena. Extracting features may include determining an energy indicator for each of a subset of the plurality of frames. Detecting video phenomena may also include comparing energy indicators for each of the subset of the plurality of frames to a reference frame. The reference frame corresponds to a video frame taken when no fire is present, video frame immediately preceding each of the subset of the plurality of frames, or a video frame immediately preceding a frame that is immediately preceding each of the subset of the plurality of frames. Image-based and non-image based techniques are described herein in connection with fire detection and/or verification and other applications.
摘要翻译： 检测诸如在飞机货舱中的火灾的视频现象包括从多个源接收多个视频图像，补偿图像以提供增强的图像，从增强的图像中提取特征，以及组合来自多个源的特征 检测视频现象。 提取特征可以包括为多个帧的子集中的每一个确定能量指示符。 检测视频现象还可以包括将多个帧的子集中的每一个的能量指示符与参考帧进行比较。 参考帧对应于不存在火焰时所拍摄的视频帧，紧接在多个帧的子集之前的视频帧，或紧邻在多个帧的子集之前的帧之前的视频帧 。 本文结合火灾探测和/或验证和其他应用来描述基于图像和非图像的技术。
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