Design of Data Processing and Signal Modulation Combination System
The combination of data processing and signal modulation is an important testing equipment of automated test systems,the data processing combination includes a power supply,a controller,a DA output,an AD acquisition,a digital IO signal processing,a serial bus communication,and a 1553B bus communication,which can realize the analog and digital signal control output,analog and digital signal acquisition and monitoring,RS422 serial bus communication,and 1553B bus data communication.The modular de-sign adopts PXI bus architecture,it has the advantages of mature,stable and reliable and can support the expansion,receiving in-structions of the data processing combination controller,and configuration board card to complete the required functions;The signal modulation combination,as an intermediate signal switching device for the test and data processing combination,achieves the data pa-rameter interface matching and signal conditioning isolation,which focuses on calculating the signal conditioning circuit and chip.Through experiments,it achieves different amplitudes of digital signal and analog signal input and output conversion,realizes different ratios of the voltage and current conversion,and meets the signal conversion and isolation in practical applications.
data processingsignal modulation circuitinput detectionsignal acquisitiondata bus communication
万方数据
维普
