Automatically Calorific Value Measurement System

As a basic energy of our counrry.the determination of calorific value of coal is very important to the excavation and efficient exploitation of energy.The traditional method of determination has many complicated coursese and always needs much work made by man.So the research of automatic calorie meter makes significentThrough the detailed analysis of principle and method of measurement,an automatic measuring instrument controlled by microcomputer is designed in this paper in order to take the place of manual operations.The instrument can almost do every operation by itself,such as the control of experimental progress,data collection, data computation and the printout of experimental results.Furthermore,a distributing system of measurement building on field bus is designed too.Under the control of personal computer,several calorie meters can work independently and simultaneously.On the other hand,a powerful measuring and control software is developed using visual computer language-Visual Basic and Visual C++.This sofrware can simulate the whole process of experiment accurately through animation and real-time curve,which makes the measurement automatic and intelligent.At the last part of this paper,some possible sourcese of measuring amiss are discussed.And some methods of improving the accuracy of measurment are expounded too.