Counterweight monitoring device

An illustrative example embodiment of a counterweight monitoring device includes a boundary marker configured to be located at a selected location along a counterweight path along a boundary of a counterweight space. The detector is configured to detect a boundary marker change. The detector is configured to provide an output indicative of a deviation of any portion of the counterweight from the counterweight space based on the detected boundary mark change. 配重监测装置的说明性示例实施例包括边界标记，其被配置成沿着配重空间的边界位于沿着配重路径的选定位置。检测器被配置用于检测边界标记变化。检测器被配置成基于检测到的边界标记变化来提供指示配重的任何部分与配重空间的偏差的输出。