摘要
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.
A multi-standard frequency shift cab signal generator that utilizes sound card of PC as hardware is presented in the paper.The generator,which can generate multi-standard frequency shift cab signal widely used in china railway,is developed based on LabVIEW virtual instrument technology.It can also add noise signal and 50 Hz and harmonics disturbance on frequency shift cab signal.The generator can be used to test the performance of frequency shift cab signal device.The system is characteristic of simple structure,good expansibility and friendly human-machine interface.
出处
《南昌工程学院学报》
CAS
2010年第6期21-24,共4页
Journal of Nanchang Institute of Technology
关键词
声卡
虚拟仪器
移频机车信号
sound card
virtual instrument
frequency shift cab signal
