Hardware controller uses the at89c51 monolithic integrated circuit , a / d transformation uses 12 bit transformations chips max187 , has completed the design of a front channel for sampling and processing the simulated signal 其中硬件單片機采用at89c51單片機, a / d轉(zhuǎn)換采用12位轉(zhuǎn)換芯片max187 ,完成了模擬信號從采樣到處理的整個前向通道設計。