Design On The Current Oscilloscope For Anode Guide Rod In Aluminium Electrolytic Cell

Aluminum industry has an important role in national economy. In modern industry, electrolytic process was used mainly to get aluminum. High current was used to electrolyze melt mass with anode and cathode in aluminum electrolytic cell. One of the key factors, in order to optimization production in industry, was to guarantee the stability of aluminum electrolytic cell. Real-time monitoring aluminum electrolytic cell voltage was an important method to use guarantee the stability of aluminum electrolytic cell in China. On the base of variety of cell voltage,electrolyze process was adjusted and production was optimized. Since middle period of the 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 single chip microcomputer,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 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 SST FlashFlex51 series microcomputer 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 I2C-Bus 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 SST series chip Microcomputer attained the aim of monitoring current signal to guarantee the stability of aluminum electrolytic cell, and greatly improve productivity of aluminum industry.