Ultra-high-speed Digital Framing Camera Driver Circuit And Image Acquisition System Design

The ultra-high-speed digital gated camera has been widely applied to a great many scientific fields, such as plasma physics, spectroscopy, optoelectronics, hydrodynamics, dynamics, dynamite research, material science, non-linear optics, laser physics, missile research, shock wave research and so on. Therefore, the development of the ultra-high speed digital gated camera is so significant that a great many countries have developed it for many years.The main purpose of the dissertation is to develop CCD drive circuit, signal signal acquisition and processing circuit for the ultra-high-speed digital gated camera. The main contents and contributions include:1. The designing scheme of the ultra-high-speed digital gated camera has been accomplished.The camera is composed of the optical splitting system, the shutter circuit, CCD drive circuit, signal acquisition and processing circuit and automatic test equipment's communication system. Four optical signal are gained through the optical splitting system, and the interval of pulse is controlled by the shuttle circuit, CCD timing driver is generated by CCD driving circuit, and the electronic signal generated by CCD is processed by the signal sampling and processing system, and the camera can be communicate with other devices in automatic test system by GPIB interface.2. The task of making the design of ultra-high-speed digital framing camera driving circuit and image acquisition system has been accomplished.In design of ultra-high-speed digital framing camera,CCD driving and signal acquisition and processing circuits are the most important parts in the design of ultra-high-speed digital framing camera system. This analyzed the SONY company's interline transfer array-based CCD chip ICX205AK's timing driver. The programmable logic device (Xilinx's FPGA chip XC3S1500) is adopted to design the CCD timing driving circuit, and the programmable logic device is used for image acquisition and information processing, then uploaded to the computer interface through the connection of Camera Link.3. The designing of GPIB automatic test equipment's communication system has been accomplished.In this dissertation, the infineon XC164CM's Single-chip is used to implement the configuration of NI company's GPIB interface chip, and accomplished the system controller functions apart from the GPIB control function. The camera can be controlled by SCPI (Standard Commands for Programmable Instruments) such as the ability of instrument self checking and reduction, adjusting the exposure time of CCD, Pixel Gain Amplifier (PxGA) and programmable gain amplifier (VGA) features, and so on.The time resolution, spatial resolution and dynamic range are improved compared with traditional high-speed camera greatly. It has higher time resolution and spatial resolution than reported domestically high-speed camera. Furthermore, the camera has program-controlled function and can be easily used in automatic test system.