Based on the manual test procedures of SMT modules and its automatic testing requirements, this paper introduces the design and control principles of an automatic SMT modules test system together with a detailed description of the design ideas and framework of control software. The system supports auto acquisition of test data, auto check of test results, real-time sharing of multi-section’s information and diagnostic report of failed modules.Therefore, it can greatly improve the test efficiency of SMT modules in electric energy meter production enterprises. The system also provides statistical fault analysis to enable an enterprise to improve its manufacturing process.%结合SMT模块人工检测的工作过程和自动检测要求，本文介绍了检测装置的设计组成和控制原理，并详细说明了控制程序的设计思路和设计框架，实现了检测数据自动采集、检测结果自动判断、多工段实时共享检测信息等，极大地提高电能表生产企业的SMT模块检测效率、增强检测质量控制以及对加工故障的统计分析，并且为模块维修提供了较为清晰的故障原因便于维修。
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