Record & Analyse System For Current Of Anode Guide Rod

Aluminum industry has an important roal in the national economy. In modern industry, electrolytic process is used mainly to get aluminum. High direct current is injected into electrolytic cell which is used to electrolyze. One of the most important is the stability of the aluminum electrolytic cell among all the problems in electrolysing aluminum. Real-time monitoring aluminum electrolytic cell voltage is an important method to use guarantee the stability of aluminum electrolytic cell inland. On the base of variety of cell voltage,electrolyze process is adjusted and production is optimized. Since the middle period of 1990s, monitoring aluminum electrolytic cell anode current was described firstly to guarantee the stability of aluminum electrolytic cell by researchers in foreign.On the base of analyzing relations between guaranteeing the stability of aluminum electrolytic cell and aluminum electrolytic cell anode current,according to the principle of intelligent instrument,current oscilloscope,which was mainly controlled by digital singnal processor,was designed. The instrument can acquire instantly current signal in anode and display waveform, analyze the data to get the waveform information of aluminum melt and to guarantee the stability of aluminum electrolytic cell.By the high-performance operational amplifier, the current signal was acquired, converted to digital signal, with the inside AD convertor, into DSP and displayed on the Lattice LCD. The instrument can acquire instantly current signal in anode and display waveform, analyze the data to get the waveform information of aluminum melt and to guarantee the stability of aluminum electrolytic cell. By the high-performance operational amplifier, the current signal was acquired, converted to digital signal into single chip microcomputer and displayed on the Lattice LCD. Meanwhile, the wave could be save and playback according to the indeed. In the design of this device, the popular C2000 series of the DSP was selected to be the core of this test and control instrument. The instrument has other parts such as chopping high performance operation amplifier,analog to digital converter flash memory,the Lattice LCD and so on. On the base of the hardware circuit, device driver and system software were programmed according to device driver,over story program and application layer program. The aim of the device was attained.The research of aluminum electrolytic cell anode current oscilloscope based on DSP attained the aim of monitoring current signal to guarantee the stability of aluminum electrolytic cell, and greatly improve productivity of aluminum industry.