Digital X-ray imaging inspection technology is the developing trend of X-ray inspection

the compact digital X-ray imaging system，which adopts X-ray sensitive CCD as detective device

has the characteristics of small volumn

high resolution

good real-time character. This paper introduces the development of the compact digital X-ray imaging system based on X-ray sensitive CCD

describes the working principle of X-ray sensitive CCD. According to the selected CCD

dirver

A/D

data acquistion and communication curcuits are designed and manufactured. The system communicates with computer through USB2.0 interface

which supplies power for the system

no additional power supply makes it have simple constructions. The resolution testing results instruct that the resolution of this imaging system is higer than 10lp/mm.