Based the SOPC signal processing and transmission module - Design and Implementation
|School||Nanjing University of Technology and Engineering|
|Course||Communication and Information System|
|Keywords||SOPC FFT Nios Ⅱ FPGA|
With the continuous development and application of FPGA technology , making the scale of electronic design and integration continue to improve , also continues to introduce new electronic system design methods and design thinking . The new generation of FPGAs or even integrated central processor unit (CPU) or processor (DSP) cores in an FPGA design software and hardware coordination powerful hardware programmable system- on-chip (SOPC, System On Programmable Chip) supported. SOPC Altera Corporation proposed a flexible , efficient SOC solutions . This topic is based on SOPC technology to complete the design of microwave interference velocimetry system , it has a good real-time , high cost , small size and other characteristics . In this thesis focuses velocimetry system data processing principles and given specific programs Doppler signal processing system . Then two key modules of the system - FFT module based Nios Ⅱ embedded systems design . Two key modules are implemented in the FPGA chip , which the FFT module based on Altera's FFT IP core for core , based on the control , buffer modules ; embedded systems based on Nios Ⅱ soft core for core and added according to the actual needs of the memory module , the FFT interface module, the communication module . The functions of the system are by interrupt trigger , including CAN bus interrupt and FFT module interrupts , so interrupt service routine flowchart is given in the paper . After repeated testing and improvements of the system , the results show that the system can achieve the purpose of measuring the initial velocity .