公开(公告)号：US20050200855A1

公开(公告)日：2005-09-15

申请号：US10514864

申请日：2003-05-13

申请人： James Mcinnes ,  Maxwell Hadley ,  Arthur Hartog ,  Yuehua Chen ,  Timothy Jeffreys

发明人： James Mcinnes ,  Maxwell Hadley ,  Arthur Hartog ,  Yuehua Chen ,  Timothy Jeffreys

IPC分类号： G01D5/353 ,  G01B9/02

CPC分类号： G01D5/35306

摘要： An apparatus for sensing data from a remote optical sensor 16 has its frequency stabilised by balancing the outputs of narrow band filter 28 30, spaced about a desired frequency 36 positioned at about the 3db down points 40 of a broad band light source 10 using voltage control, current control or temperature control to vary the frequency of the wide band light source 10. Difference between the outputs through the two narrow band filters 28 30 can be used to drive an amplifier 48 to correct the frequency of the broad band light source. The outputs through the two narrow band filters 28 30 can be converted 52 to binary numbers and fed to a microprocessor 56 which is used, via analog conversion 60, to drive the amplifier 48. The broad band light source 10 can be pulse modulated 68 to provide temporally separate light pulses 92 94 through each of the narrow band filters 28 30, measured at separate times. The corrective output to the amplifier 48 can be governed by a ratio between the outputs through the narrow band filters 28 30 rather than by a difference there between.

摘要翻译： 用于感测来自远程光学传感器16的数据的装置的频率通过平衡窄带滤波器28 30的输出而被稳定，窄带滤波器28 30的输出使用电压控制在宽带光源10的3db下降点40附近围绕期望的频率36隔开 ，电流控制或温度控制以改变宽带光源10的频率。通过两个窄带滤波器28 30的输出之间的差可以用于驱动放大器48来校正宽带光源的频率。 通过两个窄带滤波器28 30的输出可以被转换成二进制数，并被馈送到微处理器56，微处理器56经由模拟转换器60来驱动放大器48.宽带光源10可被脉冲调制68到 通过在分开的时间测量的每个窄带滤波器28 30提供时间上分离的光脉冲92 94。 放大器48的校正输出可以由通过窄带滤波器28 30的输出之间的比率来控制，而不是由它们之间的差异来控制。

公开(公告)号：US07251038B2

公开(公告)日：2007-07-31

申请号：US10514864

申请日：2003-05-13

申请人： James Mcinnes ,  Maxwell R. Hadley ,  Arthur H. Hartog ,  Yuehua Chen ,  Timothy Jeffreys

发明人： James Mcinnes ,  Maxwell R. Hadley ,  Arthur H. Hartog ,  Yuehua Chen ,  Timothy Jeffreys

IPC分类号： G01B9/02

CPC分类号： G01D5/35306

摘要： An apparatus for sensing data from a remote optical sensor 16 has its frequency stabilised by balancing the outputs of narrow band filter 28 30, spaced about a desired frequency 36 positioned at about the 3 db down points 40 of a broad band light source 10 using voltage control, current control or temperature control to vary the frequency of the wide band light source 10. Difference between the outputs through the two narrow band filters 28 30 can be used to drive an amplifier 48 to correct the frequency of the broad band light source. The outputs through the two narrow band filters 28 30 can be converted 52 to binary numbers and fed to a microprocessor 56 which is used, via analog conversion 60, to drive the amplifier 48. The broad band light source 10 can be pulse modulated 68 to provide temporally separate light pulses 92 94 through each of the narrow band filters 28 30, measured at separate times. The corrective output to the amplifier 48 can be governed by a ratio between the outputs through the narrow band filters 28 30 rather than by a difference there between.

摘要翻译： 用于感测来自远程光学传感器16的数据的装置的频率通过平衡窄带滤波器28 30的输出而被稳定，窄带滤波器28 30的输出使用位于宽带光源10的大约3db下降点40的期望频率36 控制，电流控制或温度控制来改变宽带光源10的频率。 通过两个窄带滤波器28 30的输出之间的差可以用于驱动放大器48来校正宽带光源的频率。 通过两个窄带滤波器28 30的输出可以被转换成二进制数，并被馈送到微处理器56，微处理器56经由模拟转换60被使用以驱动放大器48。 宽带光源10可以被脉冲调制68，以通过在分开的时间测量的每个窄带滤光器28 30提供时间上分离的光脉冲92 94。 放大器48的校正输出可以由通过窄带滤波器28 30的输出之间的比率来控制，而不是由它们之间的差异来控制。