Gas turbine FFT (Fast Fourier Transform) card and method based on DCS (Distributed Control System)

The invention discloses a gas turbine FFT card and method based on a DCS, and belongs to the field of DCS control. The gas turbine FFT card comprises a mother board and a daughter board; the mother board adopts an IO mother board and is used for carrying out information interaction with a DCS controller, and the daughter board interacts with a peripheral controlled system; and the daughter board is used for receiving multiple paths of pressure or acceleration analog quantity converted by a gas turbine sensor, performing FFT operation and inputting an operation result to the mother board. According to the gas turbine FFT clamping piece, the compatibility of a domestic DCS is greatly improved, and the gas turbine FFT clamping piece is used for analyzing the pressure and the acceleration of a gas turbine. 本发明公开了一种基于DCS系统的燃机FFT卡件及方法，属于DCS系统控制领域，燃机FFT卡件包括：母板和子板；所述母板采用IO母板，用于与DCS控制器进行信息交互、子板与外围被控系统交互；所述子板用于接收多路经燃汽轮机传感器转换后的压力或者加速度模拟量，并进行FFT运算，并将运算结果输入给母板。本发明的燃机FFT卡件使得国产DCS的兼容性得到更大的提高，用于分析燃气轮机的压力和加速度。