Based On The Lda Ray Industrial Camera In The Research And Design

With the development of information technology, digital X-ray imaging system based on computer is substituting for traditional X-ray imaging system, because of traditional X-ray imaging system can’t meet to the requirement of real-time and digitization. Its application range is extending from traditional security inspection, medical, nondestructive testing (NDT), and so on to a broader field. However, as a kind of special equipment in the past, x-ray imaging system still presents high price and few varieties shortcomings. Each system has unique features, and it’s difficult to transplant to other applications. In the past, its applications are mainly in the area of high-precision or low-precision detection, lack of medium resolution. Therefore the market space of medium resolution is still large.The first part of this article summarizes and analyzes the history and development of X-ray imaging technology in the world. By comparing the difference of kinds of digitized x-ray imaging technology, we find a low-cost x-ray imaging solution for industrial applications. This scheme’s goal is:economic, high-speed, small size, suitable resolution, reusable, and able to adapt to complex environmental conditions. In this program, the image sensor is LDA (linear detect array), and the processor device is FPGA. The use of camera Link interface can greatly simplify system’s on-site installation and application. The camera only needs a dedicated communication cable and a12V power, when it works.Article focuses on analyzing and designing the hardware circuit of camera. Many P-spice simulations are used for the test of circuit functions. System’s power-on test was executed when PCB board design and production was completed. Combined with camera’s hardware circuit structure and objectives, dissertation completed the design of driver software, code simulation and site commissioning. Now, the camera can achieve these functions:exposure control, AD sampling, initial signal processing, image data transmission and so on. The rebuilding of binary grayscale image can be realized by image acquisition card. In the end, we performed photographic test. At present, the anticipated target is basically realized, and the system can work properly. Camera can get clear and high brightness images, which are able to satisfy the requirements of machine vision.