关键词: MCI, FPGA, DSP, CAN

Abstract:

Based on EP2C35F484,one of the FPGA chips in Cyclone II series developed by Altera and TMS320F28335,one 32-bit floating point DSP developed by TI,this paper deals with the basic principles and implementation of signal acquisition and control of the digital stratum micro-resistivity scanning imaging system.Because of the large volume of traditional chip and ancillary digital chip,the underground circuit is overly complex and huge,and this implementation in the small diameter instrument is rarely reported.Combined with the small diameter of the instrument and the finite length,this system is designed consisting of four modules:the sending and receiving,signal acquisition,control output and CAN communication.The acquisition and control functions are achieved by the joint of DSP and FPGA.So the DSP and FPGA module designs are discussed in detail.The data transfer speed,the amount of information collection,data processing accuracy and system reliability performance are greatly improved.

Key words: MCI;FPGA;DSP;CAN