Design Of Embedded Random Sampling System

Modern signal process system is mostly applied to deal with digital signal. But most signals in the nature are analog signal, in order to process them in digital system, they must be translated into digital signal firstly. When the signal frequency is high enough, equivalent-time sampling is used to capture it by low-speed ADC.The system is designed with equivalent-time sampling and embedded processor, and all the sub-system is given. First, the based theory of random sampling and hardware circuit are given in this paper. Second, time-enlarge circuit is introduced in this paper, furthermore, it's simulate and adjust are described. Third, something about embedded processor and the design of logic control circuit are discussed .Finally, embedded software design is presented.Since classical equivalent-time sampling and embedded processor are used, the system not only shortens design circle, but also reduces the design of hardware and software, so it can lows the design cost greatly.