The invention discloses a contactless position detection switch, a switch control circuit and a point switch, and relates to the technical field of position detection switches. The position detection switch comprises a magnetic module and a magnetic control switch, wherein the magnetic control switch at least comprises a magnetic induction switch and a power electronic switch; in the process that the magnetic module approaches the magnetic control switch along with the change of the detection position on the detected piece, the magnetic field intensity is increased until the magnetic induction switch can be started for output; the magnetic field intensity is reduced until the output of the magnetic induction switch can be closed; when output is started, the magnetic induction switch outputs a dynamic signal generated by the position detection module and transmits the dynamic signal to the control end of the power electronic switch so as to control connection between the two main circuit ends. And when the output is closed, the two main circuit ends are disconnected, so that a contactless magnetic control position detection switch is formed. The on-off of the switch is controlled in a magnetic control mode, and no mechanical contact exposed in the air exists, so that the safety and the reliability are high.
本发明公开了一种无触点的位置检测开关、开关控制电路及转辙机,其涉及位置检测开关技术领域。该位置检测开关包括:磁性模块和磁控开关,磁控开关至少包括:磁性感应开关和功率电子开关;在磁性模块随被检测件上检测位置的变化接近磁控开关的过程中磁场强度增大至能开启磁性感应开关输出;远离时磁场强度减小至能关闭磁性感应开关输出;当开启输出时磁性感应开关输出位置检测模块产生的动态信号并传输至功率电子开关的控制端以控制两个主电路端之间接通;当关闭输出时两个主电路端之间断开,从而形成了无触点的磁控位置检测开关。该开关通过磁控方式控制开关通断,其不存在暴露于空气中的机械触点,所以安全性可靠性高。
Contactless position detection switch, switch control circuit and switch machine
一种无触点的位置检测开关、开关控制电路及转辙机
2023-12-12
Patent
Electronic Resource
Chinese
IuD Bahn | 2006
|IuD Bahn | 2004
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