Rmon And Fault Diagnosis System Of Refrigerated Containers

China is a large country in which refrigerated foods are hugely manufactured and consumed .As the living standard of Chinese people is being improved , requirements for better food quality also rise. Especially for food such as vegetables and meat which need to be refrigerated .If stored in wrong conditions ,the quality of the food will certainly deteriorate .For consumers ,they will not buy the food and for the manufacturers ,they have to face the lose of their market share.Our market of refrigerated food are a huge one. And with the increasingcapacity of manufacturing and consumption ,our refrigerated food industry willenter a greatly developing period.Devices for refrigerated food transportation include tracks, trains, ships and reefer containers.These years, reefer containers are greatly developed for their unique advantages and impressing characteristics.Reefer Containers are specially designed containers for transporting freshcargo They freeze or keep the temperature of the food. So they can be used totransport meat, vegetables or other fresh things.The mechanical reefer containers are kind of containers with AHU inside .Whatthey need is power to make the AHU work and freeze the food. Considering theworking conditions ,there are evitable damage and loss to both AHU and thecargo. So it's very constructive and meaningful to develop a system for reefercontainers monitoring and failure remove.This paper discusses the most developed reefer containers monitoringsystem--REFCON, exploring its principles and working conditions. Meanwhile,experiments are made to ensure the right working status of the refrigerating system as a basis of the following work. Using software of ACCESS and VISUAL BASIC, a better system is made for failure remove of reefer containers on a ship .Huge number of failures are contained, more useful solutions are advised, with better interface, the new system and corresponding data-base are much improved than the former one. It includes failures of reciprocating compressor ,screw-type refrigerating compressor ,centrifugal refrigerating compressor ,enclosed compressor ,open-type refrigerating compressor, thermostatic expansion valve, shell and coil condenser, fan-coil, electromagnetic valve, oil-separator, drier-filter, refrigerating system, controlling system .It's a practical system and can be used directly in industry.