基于硬件鉴相的钻机大钩高度检测系统研制

Development of Rig's Hook Height Detection System with Hardware Phase Detection

油田钻井过程中广泛采用绞车传感器测量钻机滚筒轴的角位移跟踪大钩高度从而得到井深值。目前对绞车传感器信号的鉴相及脉冲检测方法主要以软件辨识为主,文中设计一种通过硬件电路自动完成鉴相功能的绞车传感器信号检测系统,系统的脉冲计数由单片机完成并通过RS485通信接口输出。实际应用表明:系统性能优良,满足现场应用要求。

Drawworks sensors are widely used to measure the angular rotation of rig＇s drawworks shaft and to track the hook height, thus the well depth could be calculated. So far software was mainly used in signal phase detection and pulse counting of drawworks sensors.This paper designed a drawworks sensor signal detection system with hardware detecting signal phase automati- cally,which outputs pulse counts calculated by the SCM through the RS485 communication interface.The field application indicates that the system is high-performance and fully meets the application requirements.