Research on Analog Quantity Sampling&Convert Function Development Based on MBA Technology
As an important function of the train control system,the real-time analog signal acquisition is necessary for the train's traction speed control and system protection.According to different function occasions,some analog signal can be used directly,but some need to be converted into digital signal.In the traction control unit,voltage-to-frequency signal is adopted as one of the analog-to-digital conversion modes,which has strong anti-interference ability,but its converter chip used in this project has no alternative and is facing the risk of production suspension.In this paper,an analog-to-digital conversion of analog signal is designed,and the same function of the original scheme is realized by FPGA and software,which is equivalent to the original scheme.As for the software part,the complex floating-point operation is implemented by MBD technology.The correctness and utility of the newly developed function are approved by code simulation,hardware single board test,whole machine test and comparison test of the original scheme.
analog signal samplingvoltage-to-frequtency convertmodel based designautomatic coding
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