Described are the design thought, technical implement and hardware disposition of the analog input module for the microcomputer network control unit XDU of the car function grade on EMUs.

阐述了电动车组车厢功能级微机网络控制单元xdu的模拟量输入模块的设计思路、技术实现以及硬件配置。

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The hardware sampling unit of the monitor system is constituted by the data gathering module, including digital input module and analog input module, which are connected by the RS-485 main line form.

系统的硬件采样部分由数据采集模块(包括模拟量输入模块和数字量输入模块)构成，各模块间以RS - 485总线形式进行连接。

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Aiming at the functional safe demands of programmable electronic systems in IEC61508, this paper proposes the safe design of Analog Input (AI) module based on ARM Microprocessor.

根据IEC61508对可编程逻辑器件功能安全的要求，提出基于ARM的模拟量输入模块的安全设计。

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