Studies Of Data Acquisition System And Design On Simulating Experimental Table Of Stope Gas Accumulation

Through the simulative experiment,we can solve some questions which are difficult or discommodious in practice.Nowadays,Single-chip Microcomputer is widely used in the fields of Industrial Control System,Data Acquisition System(DAS),of Intelligent Meter and Instrument and so on.The paper that based on Single-chip Microcomputer and exerted a method which is widely used in Industrial Control System,aims at an experimental model which is used to research the laws of stope gas migration,and discusses the organization and structure,function and properties of the table's DAS.Then global system is able to complete the data sample of 64 signals input,and has the ability to sampling per 8 signal inputs simultaneously.The conversion is 12 bits.In addition,this DAS also has the ability of data storage without power supply,and the data size in FLASH Memmory is amount to sample 10 minutes of 64 signal inputs.The DAS can connect with computer through Serial Interface. The paper discusses the concept of DAS and its organization in beginning and introduces the constructure of the Simulating Experimental Table in brief.Then,the paper will discuss the design of unit circuit,interface and software design of Single-chip Microcomputer and computer.This system consists of sensors,analog multiplexers,instrumental amplifier,AD, Single-chip Microcomputer and so on.At last discusses some methods of Digital Filter which is often used in Digital Signal Process of DAS.