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介绍了以 ８０２３ 单片机为核心的大型工程机械液压系统故障诊断仪的结构和原理，对故障诊断方法和仪器功能作了详细说明，并给出了部分硬、软件设计框图。应用该技术可解决液压系统故障的快速查找和准确定位问题。经使用证明：该诊断技术，准确可靠。
This paper introduces the structure and principle of fault diagnosis instrument for hydraulic system of large construction machinery with 8023 as the core, and gives a detailed description of the fault diagnosis method and instrument function. Some hardware and software design block diagrams are also given. The application of this technology can solve the hydraulic system fault quickly find and accurately locate the problem. Proved by the use of: The diagnostic technology, accurate and reliable.