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1. 发明申请

US20050200855A1 Light source stabilisation 有权
标题翻译：光源稳定
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。

2. 发明申请

US20050232531A1 Fibre-optic interferometric remote sensor 有权
标题翻译：光纤干涉式遥感器
公开(公告)号：US20050232531A1
公开(公告)日：2005-10-20
申请号：US10514919
申请日：2003-05-13
申请人： Maxwell Hadley , Arthur Hartog , Yuehua Chen
发明人： Maxwell Hadley , Arthur Hartog , Yuehua Chen
IPC分类号： G01D5/353 , G02B6/00
CPC分类号： G01D5/35303 , G01B9/02065
摘要： A method and apparatus for receiving measurements from an interferometer transducer (22) uses a broad band light beam (19A), reflected from the transducer (22), and compares it with the amplitudes of narrow band beams, derived from the reflected broad band light beam (19A), by filters (23A-23D) on different frequencies. The narrow band light beams and the broad band light beam (19A) are measured on photo detectors (22A, 21B-21E). Microprocessor (57) compares outputs of the photo detectors to interpret phase differences between signals (25, 27, 29) from the narrow band beams. A periodically operable shutter and a single photo detector (21) can also be used. Other embodiments modulate (12) the light source (10) to produce very short broad band pulses of light (36, 40) which are reflected from the transducer (22).
摘要翻译：用于从干涉仪换能器（22）接收测量的方法和装置使用从换能器（22）反射的宽带光束（19A），并将其与从反射的宽带导出的窄带束的幅度进行比较光束（19A），通过滤波器（23A-23D）在不同的频率上。在光电检测器（22A，21B-21E）上测量窄带光束和宽带光束（19A）。微处理器（57）比较光电检测器的输出，以解释来自窄带光束的信号（25,27,29）之间的相位差。也可以使用周期性操作的快门和单个光电检测器（21）。其他实施例调制（12）光源（10）以产生从换能器（22）反射的非常短的宽带脉冲（36,40）。

3. 发明申请

US20060153487A1 System and method for packaging a fibre optic sensor 审中-公开
标题翻译：用于包装光纤传感器的系统和方法
公开(公告)号：US20060153487A1
公开(公告)日：2006-07-13
申请号：US10514871
申请日：2003-05-13
申请人： John McLellan , Maxwell Hadley , Yuehua Chen
发明人： John McLellan , Maxwell Hadley , Yuehua Chen
IPC分类号： G02B6/00
CPC分类号： G01L11/02 , E21B47/123 , G01L11/025 , G01L19/14
摘要： A fibre optic sensor deployed on a fibre optic cable to a remote location, such as an oil or gas well. The sensor, which can sense any of a variety of parameters such as pressure, temperature, flow rate, strain, or chemical properties, is located within a sleeve. The sleeve is constructed from a low-friction material, such as polytetrafluoroethylene, glass, or ceramic. Further, the sensor can float on a high-density fluid that surrounds it, or sink in a low-density fluid that surrounds it.
摘要翻译：光纤传感器部署在光纤电缆到远程位置，如油井或气井。传感器可以感测诸如压力，温度，流量，应变或化学特性等各种参数中的任何一个，位于套筒内。套筒由低摩擦材料制成，如聚四氟乙烯，玻璃或陶瓷。此外，传感器可以漂浮在其周围的高密度流体上，或者沉入其周围的低密度流体中。

4. 发明申请

US20060074579A1 Sensor calibration 有权
标题翻译：传感器校准
公开(公告)号：US20060074579A1
公开(公告)日：2006-04-06
申请号：US10514920
申请日：2003-05-13
申请人： Maxwell Hadley
发明人： Maxwell Hadley
IPC分类号： G01D18/00
CPC分类号： G01D3/022 , G01D3/036 , G01D18/008
摘要： A method, apparatus and system are disclosed for general use and for specific use when measuring pressure in well bores of hydrocarbon wells. A sensor, an interferometric optical pressure transducer 22, is disposed at the end if a fibre optic line 20 and illuminated by broadband light pulses from a pulsed broadband light source 10. Measuring equipment is provided, in the form of reflectors 31 and filters 34A 34B 34C producing modulated and temporally separate light pulses 36 38 40 36A 38A 40A which are measured by a common photodiode 30, whose output is supplied to a microprocessor 56 driving a display 60 which indicates the pressure applied to the sensor 22. The transducer 22 is mathematically modelled by subjecting the transducer 22 to known pressures and noting the outputs. The measuring equipment 30-34 is mathematically modelled by applying test signals and noting the response for each signal. The mathematical models are combined (with individual device compensating factors). A microprocessor 56 output C is assumed. A mathematical model is used to calculate an estimation B of the actual output A from the sensor. B is compared with A and the value of C changed in the appropriate direction until the closest match is found between A and B. The value of C, at the closest approach between A and B, is taken as the output to represent the pressure observed at the sensor 22. Different models and compensation factors can be used to allow interchange of different sensors and sensor types and measuring equipment and measuring equipment types.
摘要翻译：公开了一般方法，装置和系统，用于在测量油井井口中的压力时的一般用途和特定用途。如果光纤线路20被来自脉冲宽带光源10的宽带光脉冲照射的传感器，干涉光学压力传感器22设置在最后。以反射器31和滤波器34A34B34C的形式提供测量设备，产生调制和时间上分离的光脉冲36 38 40 36 A 38 A 40 A，其由公共光电二极管30测量，其输出被提供给微处理器56驱动显示器60，其指示施加到传感器22的压力。换能器22通过使换能器22经受已知压力并注意输出而在数学上建模。测量设备30-34通过应用测试信号并注意每个信号的响应在数学上建模。数学模型结合（具有单独的装置补偿因子）。假设微处理器56输出C。使用数学模型来计算来自传感器的实际输出A的估计B. B与A进行比较，C的值在适当的方向上变化，直到在A和B之间发现最接近的匹配。在A和B之间最接近的C处的值被作为输出来表示观察到的压力在传感器22处。可以使用不同的型号和补偿因素来互换不同的传感器和传感器类型以及测量设备和测量设备类型。

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