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2. 发明申请

US20150051857A1 Measurement method for aviation-specific proximity sensor 审中-公开
标题翻译：航空专用接近传感器的测量方法
公开(公告)号：US20150051857A1
公开(公告)日：2015-02-19
申请号：US14386817
申请日：2012-03-22
申请人： Zhibiao Shao , Yixin Guo
发明人： Zhibiao Shao , Yixin Guo
IPC分类号： G01B7/00 , G01R27/26
CPC分类号： G01B7/003 , G01D5/243 , G01R27/2611
摘要： A measurement method for an aviation-specific inductive proximity sensor (IPS for short) includes steps of: 1) building a measurement circuit, wherein an IPS comprises an internal resistance r and an inductance L; 2) building a look-up table, wherein the step 2) specifically comprises steps of: sampling a first voltage measured value U1 corresponding to a first constant delay time T1 with the ADC; sampling a second voltage measured value U2 corresponding to a second constant delay time T2 with the ADC; then obtaining voltage discharge formulas U1(T1, R, r, L) and U2(T2, R, r, L) of an r-L circuit; and 3) compressing the look-up table, utilizing the compressed look-up table for calculation during measurement. The present invention ensures that the system works within a standard temperature range, and improves measurement stability, reliability, and real-time performance. Furthermore, there is no floating point calculation, which saves CPU or MCU hardware resources.
摘要翻译：一种用于航空专用电感式接近传感器（IPS）的测量方法包括以下步骤：1）构建测量电路，其中IPS包括内部电阻r和电感L; 2）构建查找表，其中步骤2）具体包括以下步骤：对与ADC对应的第一恒定延迟时间T1的第一电压测量值U1进行采样; 用ADC对与第二恒定延迟时间T2对应的第二电压测量值U2进行采样; 然后获得r-L电路的电压放电公式U1（T1，R，r，L）和U2（T2，R，r，L）; 3）压缩查表，利用压缩查表来计算测量。本发明确保系统在标准温度范围内工作，并提高测量稳定性，可靠性和实时性能。此外，没有浮点计算，可节省CPU或MCU硬件资源。

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