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1. 发明专利

JP2011252912A System and method for magnetically sensing position of moving component 有权
标题翻译：用于移动部件的磁感测位置的系统和方法
公开(公告)号：JP2011252912A
公开(公告)日：2011-12-15
申请号：JP2011153114
申请日：2011-07-11
申请人： Sri Internatl , エスアールアイインターナショナルSRI International
发明人： DONALD C ARNTZ , PABLO GARCIA
IPC分类号： G01D5/245 , G01B7/00
CPC分类号： F15B15/2861 , F15B15/2846 , G01D5/00 , G01D5/24423 , G01D5/24438 , G01D5/24447 , G01D5/24476
摘要： PROBLEM TO BE SOLVED: To provide a piston rod sensing system in which the strength of a rod is not adversely effected and a magnetically encoded signal is not erased.SOLUTION: Information is magnetically recorded in a plurality of tracks in the region of the magnetic hard layer on the piston rod. Magnetic-field sensors are arranged in the tracks in the magnetically recorded region. The magnetic-field sensors arranged on the tracks sense the same magnetized regions while the piston rod moves with respect to the cylinder. Other magnetic-field sensors can sense ambient fields for use in common-mode rejection. A write head can dynamically repair damaged or erased regions detected by the magnetic-field sensors. The magnetically recorded information is relatively encoded. Energized by a battery-backup power source, the magnetic-field sensors and associated circuitry can continue to track piston rod movement when the machinery is off.
摘要翻译：要解决的问题：提供一种活塞杆感测系统，其中杆的强度不受不利影响，并且磁编码信号不被擦除。解决方案：将信息磁性地记录在活塞杆上的磁性硬质层的区域中的多个轨道中。磁场传感器布置在磁记录区域的轨道中。设置在轨道上的磁场传感器在活塞杆相对于气缸移动时感测相同的磁化区域。其他磁场传感器可以感测用于共模抑制的环境场。写头可以动态修复由磁场传感器检测到的损坏或擦除的区域。磁记录信息被相对编码。通过电池备用电源供电，当机械关闭时，磁场传感器和相关电路可以继续跟踪活塞杆的运动。版权所有（C）2012，JPO＆INPIT

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