Based On FPGA and USB2.0 Temperature Data Acquisition and Control

In the field of data acquisition,data acquisition system based on FPGA and USB2. 0 has made itself suitable for a wide range of data acquisition. A kind of method for data acquisition and control system for temperature data was given. The architecture of system was based on FPGA and USB2. 0,FPGA control system gather data by thermistor which as a temperature measurement device and control TEC which as temperature control actuator to heat or cool analyte through the peripheral drive circuit to achieve the effect of automatic temperature control. Firstly,using Verilog to design high precision pulse counting module and USB2.0 device control module,and integrate it in SOC to realize NIOS system of communication with PC. Then firmware program of USB chip CY7C68013 A working in slavefifo mode as the data acquisition channel and the application program for data display and processing were designed. The experimental results show that using FPGA and the USB device can realize high speed and accurate transmission for the temperature data and control the TEC response quickly.