High-speed data acquisition system based on FPGA/SoPC

摘要

This paper designs a high-speed data acquisition system based on a field-programmable gate array (FPGA). The system has the advantages of configurable data acquisition channels, high accuracy and high speed. A system on a programmable chip (SoPC) technique is utilized to implement the hardware design of the processor. The analog to digital converter (ADC) adopted in the system is a high-speed chip, THS1206, which is used to collect four channels analog voltage signal. When the system works in continuous conversion mode, the maximum conversion rate for single channel is 6MSPS and the maximum conversion rate for four channels is 1.5MSPS. This paper also describes the interface diagram of AD converter module, and takes advantage of Quartus II and Nios II development software to test the system performance. Experiments show that the system can accurately complete the real-time data acquisition task.