关于扶梯变频器安全切断探讨
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摘要
光耦合器以光为媒介传输电信号的元件,由于其对输入、输出电信号有良好的隔离作用,因此在各种需要电气隔离的信号传输电路中,具有广泛的应用。但光耦内部由于对微小的信号有放大左右,比较容易受到干扰。尤其在扶梯的应用场合,因为变频器的运行,本身出于强干扰的工况下。并且在对安全逻辑的判断时,需高的有效率,尤其是涉及到需要认证的安全电路,所以探讨光耦的安全应用与有效滤波尤为重要。
Optocouplers use optical as a medium to transmit electrical signals. Because of their good isolation of input and output electrical signals, they have a wide range of applications in signal transmission circuits that require electrical isolation. However, the inside of the optocoupler is relatively susceptible to interference due to the amplification of small signals. Especially in the application of the escalator, because of the operation of the inverter, it is under strong working conditions. Moreover, in the judgment of the safety logic, it is required to be highly efficient, especially when it comes to safety circuits that require authentication. Therefore, it is especially important to discuss the safety application and effective filtering of the optocoupler.
Optocouplers use optical as a medium to transmit electrical signals. Because of their good isolation of input and output electrical signals, they have a wide range of applications in signal transmission circuits that require electrical isolation. However, the inside of the optocoupler is relatively susceptible to interference due to the amplification of small signals. Especially in the application of the escalator, because of the operation of the inverter, it is under strong working conditions. Moreover, in the judgment of the safety logic, it is required to be highly efficient, especially when it comes to safety circuits that require authentication. Therefore, it is especially important to discuss the safety application and effective filtering of the optocoupler.
引文
[1]刘美俊.变频调速原理与应用状况[J].电工技术,2002(4):28-29.
[2]朱士龙,朱嘉林,陈福彬.一种用于抑制共模信号的差分放大电路的研究[J].现代电子技术,2015,38(18):110-112.
[3]赵金奎.共模干扰和差模干扰及其抑制技术[J].电子质量,2006(05).
[2]朱士龙,朱嘉林,陈福彬.一种用于抑制共模信号的差分放大电路的研究[J].现代电子技术,2015,38(18):110-112.
[3]赵金奎.共模干扰和差模干扰及其抑制技术[J].电子质量,2006(05).