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飞控计算机采集飞机上各类传感器和其他飞行控制系统的输入信息,分析解算后控制飞行姿态。频率信号的采集就是其中重要的数据信息类型之一。在此采用可编程芯片FPGA实现将频率信号转换为数字信号的方法。这种设计思想避免了搭建复杂的硬件电路来实现该功能,降低了模块硬件设计成本,节省了印制板布局空间,降低了设计复杂度,同时设计该功能的测试接口,以便于该功能故障后能够准确定位故障源。
The flight control computer collects the input information of all kinds of sensors and other flight control systems on the aircraft and analyzes the post-flight attitude control. Frequency signal acquisition is one of the important types of data and information. In this use of programmable chip FPGA to achieve the frequency signal is converted to digital signal method. This design idea avoids the complex hardware circuit to realize this function, reduces the module hardware design cost, saves the printed circuit board layout space, reduces the design complexity, designs the test interface of this function at the same time, in order to facilitate this function breakdown After accurate positioning of the source of the fault.