旋转机械内部的无线连接

　　旋转机械内部的无线连接

　　无线传感器存在的一个关键需求是，可以放置在工业机械、飞机喷气发动机和风力涡轮发电机等旋转部件上，以便对关键部件进行健康监测。无线传感器因其相对较低的成本和功率要求，在旋转机械状态监测中得到越来越广泛的应用。使用他们的无线连接，可以将数据发送到一个工厂管理网络或推到云，它可以被用来远程监控关键旋转部件从世界上任何地方，给工程师设备故障预警和允许他们优化检修计划，减少停机时间。

　　其他潜在的应用包括能够实时平衡负载的洗衣机、监测热量和控制润滑油喷射的钻头、监测起落架轴承摩擦的传感器等等。

　　However， placing wireless sensors on the actual rotating parts is a nontrivial task. While power and signal can pass through a simple series of brushes and commutators， this is not a good approach when a more precise solution exists， even if it is more complicated. What is more， in manufacturing applications the magnetic field present in the machine can block signals transmitted between the wireless sensors.

　　This article looks at wireless techniques that allow low-power sensors and data acquisition systems inside rotating machines to communicate wirelessly. All parts， datasheets， reference designs， and development kits referenced here can be found online at Digi-Key’s website.