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介绍了一种自编码式棒位测量系统。该系统的棒位探测器由数役导磁材料制成的控制律驱动轴和少量测量线圈组成，每个测量线圈输出一位地址代码。用8031CPU实现地地码到棒位值的转换。该系统适用于水力学驱动控制棒提升系统，也适用于压水型反应堆磁力驱动控制律提升系统。
A self-coded bar measurement system is introduced. The system’s rod detector consists of a controlled law drive shaft made of a number of ballistic magnetic materials and a small number of measuring coils. Each measuring coil outputs an address code. Use 8031CPU to achieve the code conversion to the bar value. The system is suitable for hydraulically driven control rod lifting system, but also for pressurized water reactor magnetic drive control law lifting system.