Two-dimensional Spectral Data Processing System Based On FPGA

Precise control of alloy composition is one of the main factors in many factors that affect the metallurgical level,so metallurgical analysis is very important for metal smelting.But in the twenty-first century,metallurgical analysis needs to be faced with three problems of in-situ quantitative,complex system trace analysis and on-line analysis.The focus of these three issues is on-line real-time analysis.At present,iron and steel smelting at home and abroad is mainly the use of furnace analysis,the use of direct reading spectrometer for line monitoring,and did not fully realize the real-time iron and steel smelting monitoring.Laser Induced Plasma Spectroscopy(LIPS)is a quantitative analysis technique based on the emission spectra of laser and material interactions.It is mainly used for real-time detection of metal composition in molten steel.And because LIPS has the characteristics of remote detection and on-line detection,it is applied to the detection of molten steel composition,which can effectively shorten the detection time,but also can greatly reduce the cost,save energy,improve quality,but also can improve production speed,increase metallurgical production.It also provides an opportunity for improved smelting process.So high-speed real-time processing and analysis of spectral image data is critical to the successful application of this technology.Field Programmable Gate Array(FPGA)is ideal for real-time image processing because of its very high dynamic configuration flexibility and processing speed is very fast.Because of this,the FPGA-based image processing system in the field of digital systems has been relatively popular,very widely used.In order to meet the speed requirement of LIPS technology application equipment,this paper studies a two-dimensional spectrum data processing system based on FPGA.In this paper,the high performance Cyclone IV series FPGA chip produced by ALTERA is used as the master chip of the image processing system.The data transmission adopts the USB2.0 chip with high speed transmission capability and uses DDR2 SDRAM to store the spectral image data.A two-dimensional spectral data processing system based on FPGA is proposed to realize high-speed real-time processing of spectral image.This paper analyzes in detail the working principle,communication characteristics and design requirements of each module,and on this basis,the design of each module.And then use the Verilog HDL hardware description language on the Quartus II 11.0 software platform to achieve the image acquisition module,image storage module and data processing module modules of these functions.In the use of EDA tools to analyze and debug these results,and finally to the system design requirements.In the process of spectral image data processing,the CORDIC algorithm is used to implement the trigonometric function to assist the spectral reduction algorithm to process the spectral image data.The two-dimensional spectral image data is reduced to one-dimensional spectral information.The resulting one-dimensional spectral image facilitates the analysis of the metal composition of molten steel in the LIPS project.