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    • 3. 发明申请
    • System and method for measuring distances, displacement and mechanical actions
    • 用于测量距离,位移和机械作用的系统和方法
    • US20070253000A1
    • 2007-11-01
    • US11786254
    • 2007-04-11
    • Alberto VallanSilvio AbrateGuido Perrone
    • Alberto VallanSilvio AbrateGuido Perrone
    • G01B9/02
    • G01D5/35351
    • An optical transducer adapted to detect external mechanical actions or forces acting comprising at least one sensing optical path (5) adapted to transmit at least one sensing optical signal (b′) and to emit at least one sensing output electrical signal (d) along with at least one reference path (4) adapted to emit at least one output electrical reference signal (e). Moreover, at least one portion (5′) of the at least one optical path (5) is adapted to be exposed to external mechanical actions or forces, so that the transmission of the sensing optical signal (b′) through the sensing optical path can be modified as a result of the mechanical actions or forces, so that a phase shift between the sensing electrical signal (d) and the reference electrical signal (e) is generated. Furthermore, the at least one reference path (4) comprises phase shifting means (11) adapted to maintain the phase shift between the at least one output sensing electrical signal (d) and the at least one output reference electrical signal (e) at a constant value in absence of any mechanical action or force exerted on the at least one sensing optical path (5), resulting in the working point or operating range of the transducer being kept within a range centered on a predefined phase shift, thus allowing improved sensitivity of the transducer.
    • 一种适于检测外部机械作用或力的光学传感器,其包括适于传输至少一个感测光信号(b')的至少一个感测光路(5)并且发射至少一个感测输出电信号(d)以及与 适于发射至少一个输出电参考信号(e)的至少一个参考路径(4)。 此外,至少一个光路(5)的至少一部分(5')适于暴露于外部机械动作或力,使得感测光信号(b')通过传感光路 可以由于机械动作或力而被修改,从而产生感测电信号(d)和参考电信号(e)之间的相移。 此外,所述至少一个参考路径(4)包括相移装置(11),适于在至少一个输出感测电信号(d)和所述至少一个输出参考电信号(e)之间保持相移 不存在施加在至少一个感测光路(5)上的任何机械作用或力的恒定值,导致换能器的工作点或操作范围保持在以预定相移为中心的范围内,从而允许改善的灵敏度 的传感器。