Research And Implementation Of Refrigerator Test System Based On Automatic Test Technology

The electric refrigerator test system is the test automation system which most majority of refrigerators production enterprise adopts. It can in under the less artificial interventions situation, complete the product test according to the correlation standard. The test process has the very high automation and the accuracy.Because the test process needs the uninterrupted movement very long time, along with the data quantity unceasing increase and the running time growth, the system can produce the resources bottleneck. Regarding automated data gathering in error does not have examination standards, unable regarding the test result to produce one accurate explanation.The article first creates the test automation system frame model, considers the user demand, constructs the refrigerator test system structure, and selects the appropriate industry measuring instrument carries on data gathering. It explains the system essential theory and technology.According to the test automation system model analysis,the article carries on the design and the research to the system data gathering module,the test data gathering procedure needs to communicate with the measuring instrument.At present the communications standards that suite with the industrial application are not one kind,two industry communications standards are mainly considered:RS-485 and GPIB.Through analyzes their communications principle and the technology,and considerstheir industry characteristic as well as the data communications programming technology,we study the application of the conditions and performance of two communications standards.The article also conducted the research on the gatherihg strategy,how the data gathering efficiency and the system performance achieves one kind of equilibrium was the key point which we studied.The goal is guarantee data gathering system the accuracy and the stability. In order to enhance the system the test automatiofi handling ability,for the data restoration after the computer collapses and the historical data inquiring,the system needs to carry on the database programming.The error is inevitable for test system. The article carries on the error analysis to...