DSP技术在光电测量系统中的应用

Application of DSP in the Optic-electric Measuring System

数字信号处理DSP是一门新兴技术 ,在光电测量系统中应用非常广泛。本文介绍了由CMOS图像传感器、静态存储器、可编程逻辑器件、数字信号处理器等组成的光电测量系统 ,CMOS图像传感器接收光学信号并直接输出图像数字信号 ,静态存储器存储图像数据 ,可编程逻辑器件产生逻辑和时序 ,数字信号处理器进行图像数据处理。测量系统采用了CMOS数据转换、SRAM数据存储和DSP数据处理三级流水线结构 ,能够实时进行数据采集和数据处理。

DSP (Digital Signal Processing) is a new technology. I t has been widely applied in optic-electric measuring system recently. An optic-el ectric measuring system was introduced in this paper. This system main includes the following parts: CMOS Image Sensor, Static RAM (SRAM), Complex Programmable Logic Device (CPLD) and Digital Signal Processor (DSPs). The CMOS Image Sensor i s used to receive optics signal and output image digital signal. The SRAM is use d to store image data. The CPLD is used to generate logic and timing. The DSPs i s used to process image data. The measuring system adopts the three-level pipeli ne structure: data conversion of the CMOS Image Sensor, data storage of the SRAM and data processing of the DSPs. Data acquisition and processing can be realize d in the real-time.