公开(公告)号：US20050007239A1

公开(公告)日：2005-01-13

申请号：US10839445

申请日：2004-04-30

申请人： Stanley Woodard ,  Bryant Taylor ,  Qamar Shams ,  Robert Fox ,  Melanie Fox ,  Robert Bryant

发明人： Stanley Woodard ,  Bryant Taylor ,  Qamar Shams ,  Robert Fox ,  Melanie Fox ,  Robert Bryant

IPC分类号： G01N29/02 ,  H04Q5/22

CPC分类号： G01L19/086 ,  B60C11/243 ,  B60C23/0449 ,  G01D21/00 ,  G01F23/26 ,  G01F23/263 ,  G01F23/268 ,  G01F23/284 ,  H01Q1/2208

摘要： Magnetic field response sensors designed as passive inductor-capacitor circuits produce magnetic field responses whose harmonic frequencies correspond to states of physical properties for which the sensors measure. Power to the sensing element is acquired using Faraday induction. A radio frequency antenna produces the time varying magnetic field used for powering the sensor, as well as receiving the magnetic field response of the sensor. An interrogation architecture for discerning changes in sensor's response frequency, resistance and amplitude is integral to the method thus enabling a variety of measurements. Multiple sensors can be interrogated using this method, thus eliminating the need to have a data acquisition channel dedicated to each sensor. The method does not require the sensors to be in proximity to any form of acquisition hardware. A vast array of sensors can be used as interchangeable parts in an overall sensing system.

摘要翻译： 设计为无源电感电容电路的磁场响应传感器产生磁场响应，其谐波频率对应于传感器测量的物理属性状态。 使用法拉第感应器获取传感元件的功率。 射频天线产生用于为传感器供电的时变磁场，以及接收传感器的磁场响应。 用于识别传感器响应频率，电阻和振幅变化的询问架构是该方法的一个组成部分，从而能进行各种测量。 可以使用这种方法询问多个传感器，因此不需要为每个传感器专用数据采集通道。 该方法不需要传感器靠近任何形式的采集硬件。 大量传感器可用作整个传感系统中的可互换部件。

公开(公告)号：US20060049833A1

公开(公告)日：2006-03-09

申请号：US10943655

申请日：2004-09-08

申请人： Robert Moses ,  Robert Fox ,  Richard Chattin ,  Qamar Shams ,  Christopher Fox ,  Melanie Fox

发明人： Robert Moses ,  Robert Fox ,  Richard Chattin ,  Qamar Shams ,  Christopher Fox ,  Melanie Fox

IPC分类号： G01N27/00

CPC分类号： G01R29/22 ,  G01H13/00

摘要： A system and method are provided for monitoring performance capacity of a piezoelectric material that may form part of an actuator or sensor device. A switch is used to selectively electrically couple an inductor to the piezoelectric material to form an inductor-capacitor circuit. Resonance is induced in the inductor-capacitor circuit when the switch is operated to create the circuit. The resonance of the inductor-capacitor circuit is monitored with the frequency of the resonance being indicative of performance capacity of the device's piezoelectric material.

摘要翻译： 提供了一种系统和方法，用于监测可形成致动器或传感器装置的一部分的压电材料的性能。 开关用于选择性地将电感器电耦合到压电材料以形成电感器 - 电容器电路。 当开关操作以产生电路时，在电感 - 电容电路中感应谐振。 监测电感 - 电容电路的谐振，谐振频率表示器件的压电材料的性能。

公开(公告)号：US20070069083A1

公开(公告)日：2007-03-29

申请号：US11422984

申请日：2006-06-08

申请人： Qamar Shams ,  Michael Logan ,  Robert Fox ,  Melanie Fox ,  John Ingham ,  Sean Laughter ,  Theodore Kuhn ,  James Adams ,  Walter Babel

发明人： Qamar Shams ,  Michael Logan ,  Robert Fox ,  Melanie Fox ,  John Ingham ,  Sean Laughter ,  Theodore Kuhn ,  James Adams ,  Walter Babel

IPC分类号： G05D1/00

CPC分类号： G05D1/101

摘要： A self-contained avionics sensing and flight control system is provided for an unmanned aerial vehicle (UAV). The system includes sensors for sensing flight control parameters and surveillance parameters, and a Global Positioning System (GPS) receiver. Flight control parameters and location signals are processed to generate flight control signals. A Field Programmable Gate Array (FPGA) is configured to provide a look-up table storing sets of values with each set being associated with a servo mechanism mounted on the UAV and with each value in each set indicating a unique duty cycle for the servo mechanism associated therewith. Each value in each set is further indexed to a bit position indicative of a unique percentage of a maximum duty cycle for the servo mechanism associated therewith. The FPGA is further configured to provide a plurality of pulse width modulation (PWM) generators coupled to the look-up table. Each PWM generator is associated with and adapted to be coupled to one of the servo mechanisms.

摘要翻译： 为无人机（UAV）提供独立的航空电子感测和飞行控制系统。 该系统包括用于感测飞行控制参数和监视参数的传感器，以及全球定位系统（GPS）接收器。 飞行控制参数和位置信号被处理以产生飞行控制信号。 现场可编程门阵列（FPGA）被配置为提供存储各组值的查找表，其中每组与安装在UAV上的伺服机构相关联，并且每组中的每个值表示伺服机构的唯一占空比 相关联。 每组中的每个值进一步被索引到指示与其相关联的伺服机构的最大占空比的唯一百分比的位位置。 FPGA还被配置为提供耦合到查找表的多个脉宽调制（PWM）发生器。 每个PWM发生器与伺服机构中的一个相关联并且适于耦合到其中一个伺服机构。