摘要：针对系统中RS485干式油底壳>骨刺灵
接口对过电压极其敏感、耐受电压水平低、容易受到雷电电磁脉冲以及操作过电压等电磁干扰，该文提出了一种隔膜胶水RS485接口特定的浪涌防护的方案，结合RS485接口信号的传输特点和理论分析，初步设计出浪涌保护器件，再通过试验测试的方法来确定出最合适的浪涌电路元件参数，以达到不影响信号正常传输的前提下，抑制线路过电压的功能。 关键词：RS485接口 电涌保护器 两级保护 退偶电阻
Abstract：Based on serial communication in RS485 interface withstand voltage level low，vulnerable to lightning electromagnetic pulse interference，this paper proposed a RS485 interface specific surge protection scheme.Firstly，combined with RS485 interface device electrical performance and related signal surge design specifications，We design a reasonable surge protection circuit form.Then，We followed by theoretical calculation and comprehensive analysis to determine the parameters of the components to achieve the anticipated effect.
液压缸位移传感器
Key words：机床数据采集RS485 interface surge protective devices two-stage protection decoupling resistance
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