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    AUTO-ZEROING ABSOLUTE PRESSURE SENSOR
    5.
    发明申请
    AUTO-ZEROING ABSOLUTE PRESSURE SENSOR 有权
    自动清零绝对压力传感器

    公开(公告)号：US20130317763A1

    公开(公告)日：2013-11-28

    申请号：US13478293

    申请日：2012-05-23

    Applicant: David Alan Ashman ,  Timothy Alan Higgins ,  Lawrence B. Marsh

    Inventor： David Alan Ashman ,  Timothy Alan Higgins ,  Lawrence B. Marsh

    IPC: G06F19/00 ,  G01L7/18

    CPC classification number: G01L7/14

    Abstract: One aspect provides a method including determining that an absolute pressure sensor is not submersed in a fluid; measuring an atmospheric pressure with the absolute pressure sensor to determine an offset pressure measurement; submersing the absolute pressure sensor in a fluid; and measuring pressure with the absolute pressure sensor; wherein a compensated pressure measurement of the fluid is determined. Other embodiments are disclosed.

    Abstract translation: 一方面提供一种方法，包括确定绝对压力传感器不浸没在流体中; 用绝对压力传感器测量大气压力以确定偏移压力测量; 将绝对压力传感器浸没在流体中; 并用绝对压力传感器测量压力; 其中确定流体的补偿压力测量。 公开了其他实施例。

    Altimeter-encoder
    6.
    发明授权
    Altimeter-encoder 失效
    高度计编码器

    公开(公告)号：US4006638A

    公开(公告)日：1977-02-08

    申请号：US517482

    申请日：1974-10-24

    Applicant: Rudolf G. Woelfl

    Inventor： Rudolf G. Woelfl

    IPC: G01L7/14 ,  G01L9/00

    CPC classification number: G01L9/0088 ,  G01L7/14

    Abstract: An aircraft altimeter-encoder is provided with an altitude sensitive barometric or aneroid bellows which simultaneously drives a visual altitude indicator and an altitude digital encoder. The indicator includes one or more pointers that register with a dial. The encoder includes a wheel or disc having a series of transparent and opaque regions scanned by photo-optical means. This generates digital signals corresponding to the altitude indicated on the face of the altimeter. The digital signals are adapted to be fed to a transponder for telemetering to a ground station. The altimeter-encoder includes means for simultaneously adjusting both the indicator and the encoder disc to compensate for variations in the local or ambient barometric pressure. Means are also provided for adjusting the relationship between the indicator and the encoder disc whereby the digital altitude signals coupled to the transponder correspond exactly to the altitude indicated on the face of the altimeter, referenced to 29.92 in Hg barometric pressure.

    Abstract translation: 飞机高度计编码器配有一个高度敏感的气压或非空气波纹管，同时驱动视觉高度指示器和高度数字编码器。 指示器包括一个或多个注册表盘的指针。 编码器包括具有由光电装置扫描的一系列透明和不透明区域的轮或盘。 这产生对应于高度计表面上指示的高度的数字信号。 数字信号适于馈送到用于对地面站进行遥测的应答器。 高度计编码器包括用于同时调整指示器和编码器盘以补偿局部或环境气压的变化的装置。 还提供了用于调整指示器和编码器盘之间的关系的装置，由此耦合到应答器的数字高度信号精确地对应于高度计的表面上指示的高度，以29.92的Hg大气压力。

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