Design And Development Of Multifunctional Analog Signal Board Based On CPCI Bus

Nowadays,with the continuous advancement of science and technology,the technical indicators and complexity of weapons and equipment have become very high,and the technical indicators of the matching measuring devices have also been greatly improved.Bus technology is a bridge between computers and measurement devices,and its performance has a profound impact on the transmission rate and processing of data.Therefore,it is crucial to improve the performance of bus technology.With the introduction of CPCI bus technology,the shortcomings of the past bus technology The place has been optimized,and its excellent performance makes it the most widely used in the current bus technology.Compared with other bus standards,the CPCI bus has specific advantages such as strong scalability and stable mechanical structure on the basis of the PCI bus.These advantages make the CPCI bus have a wide range of applications in many industrial fields,and it has also become an industrial A new generation of standards in the field.Firstly,a designing scheme of multifunctional analog signal board based on the CPCI bus was proposed in this thesis.After a thorough understanding of the CPCI bus,after comparing the design scheme of the IP core and the CPCI dedicated interface chip,the CPCI9054 was selected to complete the communication between the multifunctional analog signal board and the host computer.Secondly,the hardware circuit of multifunctional analog signal board based on CPCI bus is developed,including the design of voltage acquisition circuit with amplification function,voltage output circuit,level conversion circuit,bus interface circuit and peripheral circuit.Then design FPGA control logic based on multifunctional analog signal hardware circuit,which includes data transmission logic,voltage acquisition control logic,voltage output control logic,and defines the transmission protocol with the host computer.Finally,the technical indicators of the multi-function analog signal board were tested by the Driver Wizard software,and the correctness of the FPGA design logic was verified.The test results show that the multifunctional analog signal module designed in this article can meet the needs of the system.