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US08542006B2 Movement detection circuit of solenoid shear seal valve on subsea pressure control system and method of detecting movement of solenoid actuator 有权
海底压力控制系统电磁剪切密封阀运动检测电路及螺线管执行器运动检测方法

  • Patent Title: Movement detection circuit of solenoid shear seal valve on subsea pressure control system and method of detecting movement of solenoid actuator
  • Patent Title (中): 海底压力控制系统电磁剪切密封阀运动检测电路及螺线管执行器运动检测方法
  • Application No.: US12336191
    Application Date: 2008-12-16
  • Publication No.: US08542006B2
    Publication Date: 2013-09-24
  • Inventor: Zhen Liu
  • Applicant: Zhen Liu
  • Applicant Address: US TX Houston
  • Assignee: Hydril USA Manfacturing LLC
  • Current Assignee: Hydril USA Manfacturing LLC
  • Current Assignee Address: US TX Houston
  • Agency: Bracewell & Giuliani LLP
  • Main IPC: G01B7/14
  • IPC: G01B7/14
Movement detection circuit of solenoid shear seal valve on subsea pressure control system and method of detecting movement of solenoid actuator
Abstract:
A solenoid current monitoring circuit of a solenoid actuator includes a solenoid drive board configured to receive a control signal, a sensing resistor configured to detect a current signal of a solenoid coil of the actuator resulting from the control signal, and a differentiator configured to differentiate the current signal. The solenoid current monitoring circuit detects the movement of the solenoid actuator based on a change in the differentiated current signal caused by a change in inductance of the solenoid coil.
Abstract(Chinese):

螺线管致动器的电磁线圈电流监测电路包括配置成接收控制信号的螺线管驱动板，被配置为检测由控制信号产生的致动器的螺线管线圈的电流信号的感测电阻器，以及微分器， 电流信号。 螺线管电流监视电路根据由螺线管线圈的电感变化引起的微分电流信号的变化来检测螺线管致动器的运动。

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