Fault localization and health indication for a controller area network
    1.
    发明授权
    Fault localization and health indication for a controller area network 失效
    控制器局域网的故障定位和健康指示

    公开(公告)号:US06442708B1

    公开(公告)日:2002-08-27

    申请号:US09461662

    申请日:1999-12-14

    IPC分类号: H02H305

    CPC分类号: H04L41/0677

    摘要: A node of a network comprises an error message detector arranged to detect error messages transmitted over the network, a counter arranged to count the error messages in order to produce an error message count, and a controller arranged to count valid messages in order to produce a count of valid messages. The controller is arranged to compare the error message count to the valid message count to indicate the health of the network. The node further comprises a transceiver, a controller coupled to the transceiver by a receive line and a transmit line, and error message first logic coupled to the receive and transmit lines. The error message first logic is arranged to detect a first error message from the receive line and a second error message from the transmit line, and to determine whether the node is closest to a fault by comparing timing between the first error message and the second error message.

    摘要翻译: 网络的节点包括错误消息检测器,该错误消息检测器被布置成检测通过网络发送的错误消息;计数器,被布置为对错误消息进行计数以产生错误消息计数;以及控制器,被布置为对有效消息进行计数,以便产生 计数有效的消息。 控制器被布置为将错误消息计数与有效消息计数进行比较,以指示网络的健康状况。 节点还包括收发器,通过接收线路和发送线路耦合到收发器的控制器,以及耦合到接收线路和发送线路的错误消息第一逻辑。 错误消息第一逻辑被配置为从接收线路检测第一错误消息和来自发送线路的第二错误消息,并且通过比较第一错误消息和第二错误之间的定时来确定节点是否最接近于故障 信息。

    Fault localization and health indication for a controller area network
    2.
    发明授权
    Fault localization and health indication for a controller area network 失效
    控制器局域网的故障定位和健康指示

    公开(公告)号:US06959403B2

    公开(公告)日:2005-10-25

    申请号:US10185925

    申请日:2002-06-26

    IPC分类号: H04L12/24 H02H3/05

    CPC分类号: H04L41/0677

    摘要: A node of a network comprises an error message detector arranged to detect error messages transmitted over the network, a counter arranged to count the error messages in order to produce an error message count, and a controller arranged to count valid messages in order to produce a count of valid messages. The controller is arranged to compare the error message count to the valid message count to indicate the health of the network. The node further comprises a transceiver, a controller coupled to the transceiver by a receive line and a transmit line, and error message first logic coupled to the receive and transmit lines. The error message first logic is arranged to detect a first error message from the receive line and a second error message from the transmit line, and to determine whether the node is closest to a fault by comparing timing between the first error message and the second error message.

    摘要翻译: 网络的节点包括错误消息检测器,该错误消息检测器被布置成检测通过网络发送的错误消息;计数器,被布置为对错误消息进行计数以产生错误消息计数;以及控制器,被布置为对有效消息进行计数,以便产生 计数有效的消息。 控制器被布置为将错误消息计数与有效消息计数进行比较,以指示网络的健康状况。 节点还包括收发器,通过接收线路和发送线路耦合到收发器的控制器,以及耦合到接收线路和发送线路的错误消息第一逻辑。 错误消息第一逻辑被配置为从接收线路检测第一错误消息和来自发送线路的第二错误消息,并且通过比较第一错误消息和第二错误之间的定时来确定节点是否最接近于故障 信息。

    Disposable wireless pressure sensor
    3.
    发明授权
    Disposable wireless pressure sensor 失效
    一次性无线压力传感器

    公开(公告)号:US07059196B1

    公开(公告)日:2006-06-13

    申请号:US10995460

    申请日:2004-11-22

    IPC分类号: H01L41/08

    摘要: In general, a dielectric polymer substrate provided and an antenna formed upon the dielectric polymer substrate. A piezoelectric polymer layer (e.g., a polyvinylidene fluoride (PVDF) piezoelectric film) can be formed above the dielectric polymer substrate. Additionally, an interdigital (IDT) layer can be configured upon the PVDF piezoelectric layer, thereby permitting the piezoelectric polymer layer and the IDT layer to detect pressure data and transmit the data to a receiver via the antenna.

    摘要翻译: 通常,提供介电聚合物基材和形成在电介质聚合物基材上的天线。 压电聚合物层(例如,聚偏二氟乙烯(PVDF)压电膜)可以形成在电介质聚合物基材的上方。 此外,可以在PVDF压电层上配置叉指(IDT)层,从而允许压电聚合物层和IDT层检测压力数据,并通过天线将数据发送到接收器。

    Passive wireless acoustic wave chemical sensor
    4.
    发明授权
    Passive wireless acoustic wave chemical sensor 失效
    被动无线声波化学传感器

    公开(公告)号:US07205701B2

    公开(公告)日:2007-04-17

    申请号:US10933945

    申请日:2004-09-03

    IPC分类号: H01L41/04

    摘要: A passive wireless acoustic wave chemical sensor can be utilized for monitoring the concentration of an analyte in a substance such as blood. Such an acoustic wave chemical sensor can be configured to include one or more interdigital transducers and a selective coating formed upon a piezoelectric substrate. The coating and the interdigital transducer(s) can be used to convert electrical signal to surface waves thereof. An antenna can be connected to the acoustic wave device, wherein the antenna receives one or more input signals, which excite the acoustic device and to produce an output signal that is related to the concentration of the analyte of interest.

    摘要翻译: 无源无线声波化学传感器可用于监测诸如血液之类的物质中分析物的浓度。 这样的声波化学传感器可以被配置为包括一个或多个交叉指型换能器和形成在压电基板上的选择性涂层。 涂层和叉指式换能器可用于将电信号转换成其表面波。 天线可以连接到声波装置,其中天线接收一个或多个输入信号,其激励声学装置并产生与感兴趣的分析物的浓度相关的输出信号。

    Disposable and trimmable wireless pressure sensor for medical applications
    5.
    发明授权
    Disposable and trimmable wireless pressure sensor for medical applications 有权
    一次性可调式无线压力传感器,用于医疗应用

    公开(公告)号:US07059195B1

    公开(公告)日:2006-06-13

    申请号:US11002409

    申请日:2004-12-02

    IPC分类号: G01L99/00

    摘要: Disposable pressure sensor methods and systems are disclosed. A substrate can be provided, along with a capacitor and an inductor fixed to the substrate to form a pressure sensor thereof. In a variable L configuration, the inductor can be configured to comprise an inductor surface and a diaphragm, such that when the diaphragm is exposed to a pressure, the diaphragm moves close to the inductor surface, thereby resulting in an increase in the inductance and a decrease in the resonant frequency associated with the capacitor and the inductor and any associated circuitry. In a variable C configuration, the capacitor can be configured to comprise one electrode on the surface and one on the diaphragm, such that when the diaphragm is exposed to a pressure, the diaphragm moves close to the capacitor surface, thereby resulting in an increase in the capacitance and a decrease in the resonant frequency associated with the capacitor and the inductor and any associated circuitry. Such increase and/or decrease data are detectable by external interrogation.

    摘要翻译: 公开了一次性压力传感器方法和系统。 可以提供衬底以及固定到衬底的电容器和电感器,以形成其压力传感器。 在可变L配置中,电感器可以被配置为包括电感器表面和膜片,使得当膜片暴露于压力时,膜片移动靠近电感器表面,从而导致电感增加,并且a 降低与电容器和电感器以及任何相关电路相关联的谐振频率。 在可变C构造中,电容器可以被配置为包括表面上的一个电极和隔膜上的一个电极,使得当隔膜暴露于压力时,隔膜移动到电容器表面附近,从而导致增加 电容和与电容器和电感器以及任何相关电路相关联的谐振频率的降低。 这种增加和/或减少的数据可以通过外部询问来检测。

    Disposable pressure diaphragm and wireless sensor systems and methods
    6.
    发明授权
    Disposable pressure diaphragm and wireless sensor systems and methods 失效
    一次性压力膜片和无线传感器系统和方法

    公开(公告)号:US07017416B1

    公开(公告)日:2006-03-28

    申请号:US10972260

    申请日:2004-10-22

    IPC分类号: G01L11/00

    摘要: A disposable and wireless sensor system and method are disclosed. In general, a pressure diaphragm can be connected to one or more reusable Surface Acoustic Wave (SAW) probe heads, which are associated with an antenna for wirelessly receiving or transmitting signals that excite the reusable SAW probe head only when the reusable SAW head is in contact with the pressure diaphragm. Interrogation electronics can also be provided, which are associated with the reusable SAW probe head. One or more signals can be wirelessly transmitted to the interrogation electronics for exciting the reusable SAW probe head for pressure sensing applications thereof.

    摘要翻译: 公开了一次性和无线传感器系统和方法。 通常,压力隔膜可以连接到一个或多个可重复使用的表面声波(SAW)探头,这些探头与天线相关联,用于无线接收或传输仅当可重用SAW头处于可重用的SAW头时激发可重复使用的SAW探头的信号 与压力隔膜接触。 还可以提供询问电子装置,这些可重复使用的SAW探针头。 可以将一个或多个信号无线传输到询问电子器件,用于激发用于其压力感测应用的可重复使用的SAW探头。