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采用PC机声卡,设计了一种基于LabVIEW虚拟仪器技术开发的多制式移频机车信号发生器,可以输出当前应用于铁路的各种制式的移频机车信号,可用于移频机车信号设备的测试与试验,能模拟现场信号中混入的噪声及电化区段50 Hz及其谐波干扰,将其叠加在移频信号上以测试信号设备的抗干扰能力.该系统结构简单,可扩展性强,人机界面良好.
The PC-based sound card is used to design a multi-system frequency shift locomotive signal generator based on the LabVIEW virtual instrument technology. It can output signals of frequency-shifting locomotives of various standards currently applied to the railway and can be used to test the signals of frequency-shifting locomotives And test can simulate the noise mixed in the field signal and the electrochemical section of 50 Hz and its harmonic interference superimposed on the frequency shift signal to test the anti-interference ability of signal equipment.The system is simple in structure, scalability, Human-machine interface is good.