A high resolution magnetic-flux leakage detector inside the pipeline can judge the characteristics of defect of the pipe wall

and it is featured in huge amount of data during either the unit of time or the total.As the core of the detector

master control system（MCS） mainly fulfills the transmission and storage of giant data

whose rate and capacity can determine the performance of the detector.It is designed that PC104plus CPU plays as the core of the master control system

and FPGA as the auxiliary part.FPGA is designed to receive data from 1440 sensors and PC104plus CPU and compress and store the data in solid state disk（SSD） through the interface chip of PCI bus.Meanwhile

the debugging of the detector is finished.By experiments

the transmission rate of the designed detector is 20.91 MB/s.It is proved that the designed project is practical

and its performance is stable

which can meet the designed qualification.