公开(公告)号：US06299104B1

公开(公告)日：2001-10-09

申请号：US09631541

申请日：2000-08-03

申请人： Mahmoud A. El-Sherif ,  Dina M. El-Sherif ,  Calvin K. Lee

发明人： Mahmoud A. El-Sherif ,  Dina M. El-Sherif ,  Calvin K. Lee

IPC分类号： B64D1700

CPC分类号： B64D21/00 ,  G01L5/105

摘要： A system and method for evaluating flexible structures such as textiles under load generally. A specific embodiment is shown for parachutes. A plurality of first sensors and second sensors are attached to the parachute on its canopy and suspension lines. Preferred first sensors are fiber Bragg gratings (FBG) type sensors, and preferred second sensors are modal power distribution (MPD) type sensors. A fiber optic network interconnects the pluralities of first and second sensors to provide sensor outputs which are converted to electronic signals, modulated and transmitted to a receiving station for receiving and processing the transmitted modulated electronic signals. The preferred fiber optic network includes a plurality of light emitting diodes positioned at one end of each fibers and a photodiode array positioned to receive light from each of the fibers. The transmitter acquires the output as data, processes and RF modulates the signal to enhance the signal to noise ratio and prepares it for wireless transmission. The signal may be recorded or read-out before modulation. The preferred receiving station demodulates the received signal enhances the output signal before read-out or recording.

摘要翻译： 一般用于评估柔性结构如纺织品的系统和方法。 显示了降落伞的具体实施例。 多个第一传感器和第二传感器在其顶盖和悬挂线上连接到降落伞。 优选的第一传感器是光纤布拉格光栅（FBG）型传感器，而优选的第二传感器是模式配电（MPD）型传感器。 光纤网络将多个第一和第二传感器互连，以提供传感器输出，其被转换成电子信号，被调制并发送到接收站，以接收和处理发送的调制的电子信号。 优选的光纤网络包括位于每个光纤的一端的多个发光二极管和定位成接收来自每个光纤的光的光电二极管阵列。 发射机采集数据作为数据，处理和RF调制信号，提高信噪比，并准备进行无线传输。 在调制之前可以记录或读出信号。 优选的接收站解调接收的信号在读出或记录之前增强输出信号。