Design and Development of an ARM Based Analog Data Acquisition System for Electron Cyclotron Resonance Ion Source

摘要

A general purpose ARM based analog data acquisition module has been designed and developed. It features four numbers of analog input and output channels with both voltage and current input and output having 16bit resolution and about 100ppm stability. An ARM9 based single board computer (SBC) has been used as a (Inter Integrated Circuit) I2C master with which the ADC and DAC are connected as slaves. A current to voltage converter circuit has been implemented to read the field current in the range of μA to μA. The data acquisition module works as a TCP/IP server and can be communicated from any client computer placed on the same network. The design, development and application of this module will be described in this paper.