公开(公告)号：US20130170981A1

公开(公告)日：2013-07-04

申请号：US13341291

申请日：2011-12-30

申请人： Christoph Lang ,  Peter Volkmer ,  Murat Senel ,  Vivek Jain ,  Lakshmi Venkatraman ,  Huang Lee

发明人： Christoph Lang ,  Peter Volkmer ,  Murat Senel ,  Vivek Jain ,  Lakshmi Venkatraman ,  Huang Lee

IPC分类号： F03D7/04 ,  F03D11/00

CPC分类号： F03D7/047 ,  F03D7/048 ,  F05B2270/111 ,  F05B2270/326 ,  Y02E10/723

摘要： A wind turbine condition monitoring system and method are disclosed where the wind turbines include a tower, a gearbox coupled to the tower, and turbine blades coupled to the gearbox. The monitoring system includes blade sensors coupled to the blades, a hub node coupled to the gearbox and a controller. The controller is in communication with the hub node and blade sensors, and determines blade positions based on blade sensor readings. The blade sensors and hub node can include multi-axis accelerometers. The controller can wirelessly communicate with the blade sensors directly or through the hub node. Using position information, shadowing areas with obstructed communication can be avoided, node separation can be accounted for to reduce power requirements and/or interference from multiple transmitters can be avoided during node communications.

摘要翻译： 公开了一种风力涡轮机状况监测系统和方法，其中风力涡轮机包括塔架，联接到塔架的齿轮箱和联接到齿轮箱的涡轮机叶片。 监测系统包括耦合到叶片的叶片传感器，耦合到齿轮箱的轮毂节点和控制器。 控制器与集线器节点和刀片传感器通信，并根据刀片传感器读数确定刀片位置。 叶片传感器和轮毂节点可以包括多轴加速度计。 控制器可以直接或通过集线器节点与刀片传感器无线通信。 使用位置信息，可以避免阻碍通信的阴影区域，可以考虑节点分离以减少功率需求，并且可以在节点通信期间避免多个发射机的干扰。

公开(公告)号：US08422460B2

公开(公告)日：2013-04-16

申请号：US12418825

申请日：2009-04-06

申请人： Vivek Jain ,  Lakshmi Venkatraman

发明人： Vivek Jain ,  Lakshmi Venkatraman

IPC分类号： H04Q7/00 ,  H04J3/26

CPC分类号： H04W36/32 ,  H04W36/0055

摘要： A method of handing off radio resources from a first base station to a second base station includes transmitting route information and speed information associated with a client device from the client device to the first base station or to an application server. A time is selected at which the radio resources are to be handed off from the first base station to the second base station. The selection is performed by the first base station or the application server. The selection is performed dependent upon the route information and speed information.

公开(公告)号：US07738455B2

公开(公告)日：2010-06-15

申请号：US11488380

申请日：2006-07-17

申请人： Abtin Keshavarzian ,  Bhaskar Srinivasan ,  Lakshmi Venkatraman

发明人： Abtin Keshavarzian ,  Bhaskar Srinivasan ,  Lakshmi Venkatraman

IPC分类号： H04L12/28

CPC分类号： H04L12/66 ,  H04L1/08 ,  H04L1/1887 ,  H04L2001/0093 ,  H04L2001/0097

摘要： A method of acknowledged communication in a network includes transmitting a message to at least one node of the network, wherein the message is transmitted in each of a plurality of broadcast rounds that overlap one another according to a predetermined broadcast schedule, receiving the message by the at least one node, and transmitting an acknowledgement of the message from the at least one node, wherein the acknowledgement is transmitted in each of a plurality of collection rounds that overlap one another according to a predetermined collection schedule.

摘要翻译： 网络中确认通信的方法包括：向网络的至少一个节点发送消息，其中，根据预定的广播时间表在多个广播回合中的每一个广播轮中发送消息，接收消息 至少一个节点，并且从所述至少一个节点发送所述消息的确认，其中，所述确认在根据预定收集时间表彼此重叠的多个收集轮中的每一个中被发送。

公开(公告)号：US07613146B2

公开(公告)日：2009-11-03

申请号：US11239836

申请日：2005-09-30

申请人： Arati Manjeshwar ,  Lakshmi Venkatraman ,  Bhaskar Srinivasan

发明人： Arati Manjeshwar ,  Lakshmi Venkatraman ,  Bhaskar Srinivasan

IPC分类号： H04H20/67

CPC分类号： H04W74/0808 ,  H04L1/1803 ,  H04L1/22

摘要： A method for transmitting data from a sender node to a receiver node in a wireless network including (a) sampling a main network frequency and at least one backup frequency, (b) transmitting a message on the main network frequency without using a multiple access protocol, (c) transmitting the message on the main network frequency, using the multiple access protocol exchange, if an acknowledgement is not received, (d) transmitting the message on at least one backup frequency, using a multiple access protocol, if the main network frequency is busy after (c), (e) repeating (c) and (d) for a predefined number of time slots, until an acknowledgement is received, (f) transmitting the message on each backup frequency, using the multiple access protocol, until an acknowledgment is received, and (g) performing an exponential backoff and subsequent transmission of the message if an acknowledgement is still not received after (a) through (f).

摘要翻译： 一种用于在无线网络中从发送方节点向接收方节点发送数据的方法，包括（a）对主网络频率和至少一个备用频率进行采样，（b）在主网络频率上发送消息而不使用多址协议 （c）如果没有接收到确认，则使用多址协议交换在主网络频率上发送消息;（d）使用多址协议在至少一个备份频率上发送消息，如果主网络 频率在（c），（e）中重复（c）和（d）为止，在预定数量的时隙中为止，直到接收到确认为止，（f）使用多址协议在每个备用频率上发送消息， 直到接收到确认，并且（g）如果在（a）到（f）之后仍然没有接收到确认，则执行指数退避和随后的消息传输。

公开(公告)号：US20070077951A1

公开(公告)日：2007-04-05

申请号：US11239837

申请日：2005-09-30

申请人： Arati Manjeshwar ,  Lakshmi Venkatraman ,  Bhaskar Srinivasan

发明人： Arati Manjeshwar ,  Lakshmi Venkatraman ,  Bhaskar Srinivasan

IPC分类号： H04B7/00

CPC分类号： G04G7/02

摘要： A method and system to synchronize a first device and a second device includes generating a first tone by the first device, the first tone one of including an identity of the second device and generated at a predefined time, receiving the first tone by the second device, setting a clock of the second device based on the received first time, and sending an acknowledgment by the second device to the first device.

摘要翻译： 一种同步第一设备和第二设备的方法和系统包括：由第一设备产生第一音调，第一音调包括第二设备的标识并在预定时间生成，由第二设备接收第一音调 基于接收到的第一时间设置第二设备的时钟，并且将第二设备的确认发送到第一设备。

公开(公告)号：US20070076745A1

公开(公告)日：2007-04-05

申请号：US11239836

申请日：2005-09-30

申请人： Arati Manjeshwar ,  Lakshmi Venkatraman ,  Bhaskar Srinivasan

发明人： Arati Manjeshwar ,  Lakshmi Venkatraman ,  Bhaskar Srinivasan

IPC分类号： H04L12/413

CPC分类号： H04W74/0808 ,  H04L1/1803 ,  H04L1/22

摘要： A method for transmitting data from a sender node from among at least one sender node to a receiver node in a wireless network, the method including (a) sampling, by the receiver node, in each time slot, a main network frequency and at least one backup frequency, (b) transmitting, by the sender node, a message on the main network frequency in a first time slot, without using a multiple access protocol, (c) transmitting, by the sender node, the message on the main network frequency in a next time slot, using the multiple access protocol exchange, if an acknowledgement of the message is not received from the receiver node, (d) transmitting, by the sender node, the message on at least one backup frequency in the next time slot, using a multiple access protocol, if the main network frequency is busy after performing step (c), (e) repeating steps (c) and (d) for a predefined number of time slots, unless or until an acknowledgement is received from the receiver node, (f) transmitting, by the sender node, the message on each backup frequency, using the multiple access protocol, unless or until an acknowledgment is received from the receiver node, and (g) performing an exponential backoff and subsequent transmission of the message, by the sender node, if an acknowledgement is still not received from the receiver node after performing steps (a) through (f)

摘要翻译： 一种用于从无线网络中的至少一个发送方节点中的发送方节点向接收方节点发送数据的方法，所述方法包括：（a）由接收方节点在每个时隙中对主网络频率进行采样，至少 一个备用频率，（b）由发送方节点在第一时隙中在主网络频率上发送消息，而不使用多址协议，（c）由发送方节点发送主网络上的消息 如果没有从接收机节点接收到消息的确认，则在下一个时隙中使用多址协议交换，（d）由发送方节点在下一次发送至少一个备份频率的消息 （c），（e）重复步骤（c）和（d））预定数量的时隙，除非或直到从 接收器节点，（f）传输 发送方节点，每个备份频率上的消息，使用多址协议，除非或直到从接收方节点接收到确认，以及（g）由发送方节点执行指数退避和随后的消息传输，如果 在执行步骤（a）至（f）之后仍然没有从接收器节点接收到确认，

公开(公告)号：US09894311B2

公开(公告)日：2018-02-13

申请号：US14908431

申请日：2014-07-30

申请人： ROBERT BOSCH GMBH ,  Christopher Claus ,  Vivek Jain ,  Abtin Keshavarzian ,  Martin Schaut ,  Fred Sejalon ,  Lakshmi Venkatraman

发明人： Christopher Claus ,  Vivek Jain ,  Abtin Keshavarzian ,  Martin Schaut ,  Frederic Marcel Sejalon ,  Lakshmi Venkatraman

IPC分类号： H04N5/44 ,  G06T3/40 ,  H04N7/01 ,  B60R1/00 ,  H04N5/232 ,  H04N17/00 ,  H04N21/238 ,  H04N21/24 ,  H04N21/647 ,  H04N21/414 ,  H04N21/4223 ,  H04N21/4363 ,  H04N21/4402 ,  H04N21/442 ,  H04N21/45

CPC分类号： H04N5/44 ,  B60R1/00 ,  G06T3/40 ,  G06T2207/30252 ,  H04N5/23245 ,  H04N5/23293 ,  H04N7/0127 ,  H04N17/004 ,  H04N21/23805 ,  H04N21/2402 ,  H04N21/41422 ,  H04N21/4223 ,  H04N21/43637 ,  H04N21/440263 ,  H04N21/440281 ,  H04N21/44227 ,  H04N21/4524 ,  H04N21/64723 ,  H04W28/24 ,  H04W52/04 ,  H04W52/241

摘要： In a wireless transmission system, a transmitter sends a plurality of data packets to a receiver. The transmitter identifies channel quality indicators corresponding to properties of a communication channel between the transmitter and the receiver. During operation, the transmitter adjusts one or more parameters that affect the Quality of Service (QoS) of data transmission between the transmitter and receiver to enable data transmission at different quality levels over a range of channel quality levels. In one embodiment, the transmitter sends data packets corresponding to video from a camera to the receiver.

公开(公告)号：US09202370B2

公开(公告)日：2015-12-01

申请号：US13550683

申请日：2012-07-17

申请人： Vivek Jain ,  Gunther May ,  Lakshmi Venkatraman ,  Abtin Keshavarzian ,  Till Deubel

发明人： Vivek Jain ,  Gunther May ,  Lakshmi Venkatraman ,  Abtin Keshavarzian ,  Till Deubel

IPC分类号： G08C19/00 ,  H04W40/00 ,  H04W40/16 ,  H04W84/18 ,  H04M11/00 ,  F24J2/38 ,  H04L12/24 ,  G08C17/00 ,  H04Q9/00 ,  H04W72/12 ,  F24J2/10

CPC分类号： G08C19/00 ,  F24S50/20 ,  F24S2020/10 ,  F24S2023/87 ,  G08C17/00 ,  H04L41/04 ,  H04L41/12 ,  H04M11/002 ,  H04Q9/00 ,  H04Q2209/00 ,  H04Q2209/10 ,  H04Q2209/40 ,  H04W40/00 ,  H04W40/16 ,  H04W72/1205 ,  H04W84/18 ,  Y02E10/47

摘要： For each first tracker in a first subset there exists a respective second tracker in a second subset such that a distance between the first tracker and the second tracker is shorter than each distance between the second tracker and each of the other first trackers in the subset by more than a threshold distance. In a first time slot, data is wirelessly transmitted using a same first frequency from each of the first trackers in the subset of the first trackers to the respective second tracker in the subset of the second trackers. In a subsequent time slot, the data is wirelessly transmitted from each of the second trackers in the subset of the second trackers to a final destination data collector.

摘要翻译： 对于第一子集中的每个第一跟踪器，在第二子集中存在相应的第二跟踪器，使得第一跟踪器和第二跟踪器之间的距离比第二跟踪器和子集中的每个其他第一跟踪器之间的距离短 超过阈值距离。 在第一时隙中，使用与第一跟踪器的子集中的第一跟踪器中的每一个相同的第一频率将数据无线发送到第二跟踪器的子集中的相应第二跟踪器。 在随后的时隙中，将数据从第二跟踪器的子集中的每个第二跟踪器无线发送到最终目的地数据收集器。

公开(公告)号：US09202369B2

公开(公告)日：2015-12-01

申请号：US13550663

申请日：2012-07-17

申请人： Vivek Jain ,  Gunther May ,  Lakshmi Venkatraman ,  Abtin Keshavarzian ,  Till Deubel

发明人： Vivek Jain ,  Gunther May ,  Lakshmi Venkatraman ,  Abtin Keshavarzian ,  Till Deubel

IPC分类号： G08C19/00 ,  H04W40/00 ,  G08C17/00 ,  H04L12/24 ,  H04Q9/00 ,  H04W84/00

CPC分类号： G08C19/00 ,  F24S50/20 ,  G08C17/00 ,  H04L41/04 ,  H04L41/12 ,  H04Q9/00 ,  H04W40/00 ,  H04W84/00 ,  Y02E10/47

摘要： A method of wireless communication includes providing a matrix of trackers. The matrix includes rows and columns of trackers. A number of rows and a number of columns in the matrix is determined. If the number of rows is substantially greater than the number of columns, then vertical sweeping is performed including passing data along each of the columns of trackers to an end tracker in each column. If the number of rows is substantially less than the number of columns, then horizontal sweeping is performed including passing data along each of the rows of trackers to an end tracker in each row. If the number of rows is substantially equal to the number of columns, then diagonal sweeping is performed including passing data diagonally across each of the rows and columns of trackers to an end tracker in each row and each column. The data is passed along the end trackers to a final destination data collector.

摘要翻译： 无线通信的方法包括提供跟踪器的矩阵。 矩阵包括跟踪器的行和列。 确定矩阵中的行数和列数。 如果行数显着大于列的数量，则执行垂直扫描，包括沿着每个列的跟踪器传递数据到每列中的结束跟踪器。 如果行数显着小于列的数量，则执行水平扫描，包括沿跟踪器行中的每一行传递数据到每一行中的结束跟踪器。 如果行数基本上等于列数，则执行对角线扫描，包括将每个行和列的跟踪器的对角线跨越数据传递到每行和每列的结束跟踪器。 数据沿终端跟踪器传递到最终目标数据收集器。

公开(公告)号：US08786118B2

公开(公告)日：2014-07-22

申请号：US13189467

申请日：2011-07-22

申请人： Christoph Lang ,  Mahito Ando ,  Ralf Schmidt ,  Lakshmi Venkatraman ,  Peter Volkmer

发明人： Christoph Lang ,  Mahito Ando ,  Ralf Schmidt ,  Lakshmi Venkatraman ,  Peter Volkmer

IPC分类号： F03D9/00

CPC分类号： G01D21/00 ,  F03D7/047 ,  F05B2260/80 ,  F05B2270/17 ,  F05B2270/808 ,  Y02E10/723

摘要： A method of operating a wind turbine includes providing a wind turbine having a plurality of blades. A respective sensor is attached to each of the blades. First measurements of a structural characteristic of each of the blades are repeatedly taken by use of the sensors. A tolerance band is established for the measurements. Signals indicative of the first measurements are wirelessly transmitted only if the first measurements are outside of the tolerance band. The transmitted signals are received at a controller. An actuator signal is sent from the controller to at least one actuator associated with the blades. The sending is in response to the receiving of the transmitted signals. At least one of the blades is actuated dependent upon the actuator signal. The actuating is performed by the at least one actuator. Second measurements of the structural characteristic of each of the blades are repeatedly taken by use of the sensors after the actuating step. The wirelessly transmitting, receiving, sending and actuating steps are repeated for the second measurements.

摘要翻译： 一种操作风力涡轮机的方法包括提供具有多个叶片的风力涡轮机。 相应的传感器附接到每个叶片。 通过使用传感器来重复地进行每个叶片的结构特征的第一测量。 建立了测量公差带。 仅当第一测量值超出公差带宽时，指示第一测量的信号才被无线传输。 所发送的信号在控制器处被接收。 致动器信号从控制器发送到与叶片相关联的至少一个致动器。 发送是响应于所发送的信号的接收。 至少一个叶片根据致动器信号被致动。 致动由至少一个致动器执行。 在致动步骤之后，通过使用传感器来重复地进行每个叶片的结构特征的第二测量。 对第二次测量重复无线发送，接收，发送和启动步骤。