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    • 4. 发明授权
    • Gas turbine pyrometer filtering system
    • 燃气轮机高温计过滤系统
    • US5203632A
    • 1993-04-20
    • US874323
    • 1992-04-24
    • Edward A. FisherKeith L. Gehring
    • Edward A. FisherKeith L. Gehring
    • G01J5/00
    • G01J5/0022G01J2005/0033
    • A gas turbine pyrometer filtering method and system uses a pyrometer to measure the high pressure turbine blade temperatures using infrared optical detection techniques. The pyrometer signal can be cluttered by positively biased noise. The turbine speed and the pyrometer electrical signal are alternately sampled by an analog to digital converter, and several revolutions of pyrometer data are stored in the local RAM. A data compression algorithm then selects single samples, at evenly spaced intervals, which results in a given number of revolutions, containing an exact number of data points of aligned data in RAM. This data is passed to a clutter rejection filter which then passes only the lowest value for each of the points in all revolutions of data. Thus, the revolutions of acquired data are reduced into a single revolution of filtered data for the current sampling. This single revolution of filtered data in then enter into a circular queue and the last element is discarded. The data is then passed through a second clutter rejection filter, and the output is a smooth temperature profile of the turbine blades, free of clutter.
    • 燃气轮机高温计过滤方法和系统使用高温计使用红外光学检测技术来测量高压涡轮叶片温度。 高温计信号可以通过正偏置的噪声杂乱。 涡轮转速和高温计电信号由模拟数字转换器交替采样,几公里高温计数据存储在本地RAM中。 然后,数据压缩算法以均匀间隔的间隔选择单个样本,这导致给定的转数,其中包含RAM中对齐数据的精确数量的数据点。 该数据被传递到杂波抑制滤波器,该滤波器然后仅在所有数据转数中的每个点通过最低值。 因此,所获取的数据的转数被减少为用于当前采样的经过滤数据的单次转。 过滤数据的单次革命然后进入循环队列,最后一个元素被丢弃。 然后将数据通过第二杂波抑制滤波器,并且输出是涡轮叶片的平滑温度分布,没有杂波。