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公开(公告)号：US20110208463A1
公开(公告)日：2011-08-25
申请号：US13031182
申请日：2011-02-19
CPC分类号： G01J3/02 , G01J3/0208 , G01J3/021 , G01J3/28
摘要： A calibration assembly for a spectrometer is provided. The assembly includes a spectrometer having n detector elements, where each detector element is assigned a predetermined wavelength value. A first source emitting first radiation is used to calibrate the spectrometer. A device is placed in the path of the first radiation to split the first radiation into a first beam and a second beam. The assembly is configured so that one of the first and second beams travels a path-difference distance longer than the other of the first and second beams. An output signal is generated by the spectrometer when the first and second beams enter the spectrometer. The assembly includes a controller operable for processing the output signal and adapted to calculate correction factors for the respective predetermined wavelength values assigned to each detector element.
摘要翻译： 提供了一种用于光谱仪的校准组件。 组件包括具有n个检测器元件的光谱仪，其中每个检测器元件被分配预定的波长值。 使用发射第一辐射的第一个光源来校准光谱仪。 将装置放置在第一辐射的路径中以将第一辐射分裂成第一光束和第二光束。 组件被配置成使得第一和第二光束中的一个光束行进比第一和第二光束中的另一个更长的路径差距离。 当第一和第二光束进入光谱仪时，由光谱仪产生输出信号。 组件包括可操作用于处理输出信号并适于计算分配给每个检测器元件的相应预定波长值的校正因子的控制器。
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公开(公告)号：US08577639B2
公开(公告)日：2013-11-05
申请号：US13031182
申请日：2011-02-19
CPC分类号： G01J3/02 , G01J3/0208 , G01J3/021 , G01J3/28
摘要： A calibration assembly for a spectrometer is provided. The assembly includes a spectrometer having n detector elements, where each detector element is assigned a predetermined wavelength value. A first source emitting first radiation is used to calibrate the spectrometer. A device is placed in the path of the first radiation to split the first radiation into a first beam and a second beam. The assembly is configured so that one of the first and second beams travels a path-difference distance longer than the other of the first and second beams. An output signal is generated by the spectrometer when the first and second beams enter the spectrometer. The assembly includes a controller operable for processing the output signal and adapted to calculate correction factors for the respective predetermined wavelength values assigned to each detector element.
摘要翻译： 提供了一种用于光谱仪的校准组件。 组件包括具有n个检测器元件的光谱仪，其中每个检测器元件被分配预定的波长值。 使用发射第一辐射的第一个光源来校准光谱仪。 将装置放置在第一辐射的路径中以将第一辐射分裂成第一光束和第二光束。 组件被配置成使得第一和第二光束中的一个光束行进比第一和第二光束中的另一个更长的路径差距离。 当第一和第二光束进入光谱仪时，由光谱仪产生输出信号。 组件包括可操作用于处理输出信号并适于计算分配给每个检测器元件的相应预定波长值的校正因子的控制器。
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13.发明授权Portable light source unit for simulating fires having an adjustable aperture 失效便携式光源单元，用于模拟具有可调光圈的火焰
公开(公告)号：US5627362A
公开(公告)日：1997-05-06
申请号：US431801
申请日：1995-05-01
CPC分类号： F21L15/02 , F21V11/14 , F21V23/00 , G08B29/145
摘要： A portable, hand held light source unit is employed to check operation of fire detectors, such as hydrogen fire detectors. The unit emits radiation in a narrow band of wavelengths which are generated by the type of fire to be tested, but not by other light sources such as the sun or incandescent lamps. The unit can test fire detectors at different distances, and of different sensitivities. The intensity of the radiation emitted by the unit is adjustable for this purpose by means of a rotatable disk having a plurality of different sized apertures for selective placement between the light source and an output lens. The disk can also be rotated to a calibration position which causes a microprocessor circuit in the unit to initiate a calibration procedure. During this procedure, the lamp intensity is measured by a photodetector contained within the unit, and the microprocessor adjusts the lamp current to insure that its intensity remains within a preset range of values. A green and a red LED are mounted on the unit which indicate to an operator whether the calibration is successful, as well as the condition of the unit's battery power supply.
摘要翻译： 使用便携式手持式光源单元来检查火灾探测器的操作，例如氢火灾探测器。 该单元发射由被测试的火焰类型产生的窄波长波段的辐射，而不是由诸如太阳或白炽灯的其它光源产生的辐射。 该单元可以测试不同距离和不同灵敏度的火灾探测器。 通过具有多个不同大小的孔径的可旋转盘，用于在光源和输出透镜之间的选择性放置，由该单元发射的辐射的强度是可调节的。 盘也可以旋转到校准位置，这导致该单元中的微处理器电路启动校准过程。 在此过程中，灯强度由包含在该单元内的光电检测器测量，并且微处理器调节灯电流以确保其强度保持在预设值范围内。 设备上安装了一个绿色和红色的LED灯，指示操作员校准是否成功，以及本机电池电源的状况。
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公开(公告)号：US06891148B1
公开(公告)日：2005-05-10
申请号：US10082413
申请日：2002-02-25
申请人： Jorge E. Rivera , Robert C. Youngquist , Robert B. Cox , William D. Haskell , Charles G. Stevenson
发明人： Jorge E. Rivera , Robert C. Youngquist , Robert B. Cox , William D. Haskell , Charles G. Stevenson
摘要： A scaling device projects a known optical pattern into the field of view of a camera, which can be employed as a reference scale in a resulting photograph of a remote object, for example. The device comprises an optical beam projector that projects two or more spaced, parallel optical beams onto a surface of a remotely located object to be photographed. The resulting beam spots or lines on the object are spaced from one another by a known, predetermined distance. As a result, the size of other objects or features in the photograph can be determined through comparison of their size to the known distance between the beam spots. Preferably, the device is a small, battery-powered device that can be attached to a camera and employs one or more laser light sources and associated optics to generate the parallel light beams. In a first embodiment of the invention, a single laser light source is employed, but multiple parallel beams are generated thereby through use of beam splitting optics. In another embodiment, multiple individual laser light sources are employed that are mounted in the device parallel to one another to generate the multiple parallel beams.
摘要翻译： 缩放装置将已知的光学图案投射到相机的视野中，例如，其可以用作远程对象的所得照片中的参考尺度。 该装置包括光束投影仪，其将两个或更多个间隔开的平行光束投影到待拍摄的位于远处的物体的表面上。 所得到的物体上的光束点或线彼此间隔已知的预定距离。 结果，照片中的其他物体或特征的尺寸可以通过将其尺寸与束斑之间的已知距离进行比较来确定。 优选地，该装置是小型的电池供电的装置，其可以附接到相机并且采用一个或多个激光光源和相关联的光学器件来产生平行光束。 在本发明的第一实施例中，使用单个激光光源，但是通过使用分束光学器件产生多个平行光束。 在另一个实施例中，采用多个单独的激光光源，它们彼此平行地安装在装置中以产生多个平行光束。
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公开(公告)号：US06650125B1
公开(公告)日：2003-11-18
申请号：US10007487
申请日：2001-12-06
申请人： Robert C. Youngquist
发明人： Robert C. Youngquist
IPC分类号： G01R2726
摘要： A method and system for locating leaks of conductive fluids from non-conductive pipes and other structures or for locating non-conductive pipes or structures having conductive fluid contained therein, employ a charge generator to apply a time varying charge to the conductive fluid, and a capacitive type detector that can detect the variable charge that is induced in the fluid. The capacitive detector, which preferably includes a handheld housing, employs a large conductive pickup plate that is used to locate the pipe or leak by scanning the plate over the ground and detecting the induced charge that is generated when the plate comes in close proximity to the pipe or leak. If a leak is encountered, the resulting signal will appear over an area larger than expected for a buried pipe, assuming the leak provides an electrically conductive path between the flow and the wet surrounding ground. The detector uses any suitable type of indicator device, such as a pair of headphones that enable an operator to hear the detected signal as a chirping sound, for example.
摘要翻译： 一种用于定位导电流体从非导电管道和其他结构的泄漏或用于定位其中包含导电流体的非导电管道或结构的方法和系统，使用电荷发生器来对导电流体施加时变电荷，以及 电容型检测器，可以检测在液体中诱发的可变电荷。 优选地包括手持式外壳的电容式检测器采用大型导电拾取板，该导电拾取板用于通过在该地面上扫描该板来定位管道或泄漏，并且检测当该板接近该板时产生的感应电荷 管道或泄漏。 如果遇到泄漏，则产生的信号将出现在对于埋管的大于预期的区域上，假设泄漏在流动和湿的周围地面之间提供导电路径。 检测器使用任何合适类型的指示器装置，例如一对耳机，使得操作者能够将检测到的信号听到作为啁啾声。
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公开(公告)号：US5747805A
公开(公告)日：1998-05-05
申请号：US630276
申请日：1996-04-10
申请人： Robert C. Youngquist
发明人： Robert C. Youngquist
摘要： A sensor circuit and method for detecting the current output by one or more resistive detectors by connecting a respective integrating capacitor and a respective switch connected to each detector. Each detector charges the respective integrating capacitor until the switch allows the stored charge in the integrating capacitor to be transferred to the feedback capacitor of a shared operational amplifier which converts the stored charge to a voltage. In this way, current, not voltage is multiplexed and each sensor can be operated, that is, collect charge, virtually all the time. Thus, fewer components are required to monitor a large number of resistive detectors with little or no degradation in the signal to noise ratio.
摘要翻译： 一种用于通过连接相应的积分电容器和连接到每个检测器的相应开关来检测一个或多个电阻检测器的电流输出的传感器电路和方法。 每个检测器对相应的积分电容器进行充电，直到开关允许积分电容器中的存储电荷被传送到将存储的电荷转换为电压的共享运算放大器的反馈电容器。 以这种方式，电流，非电压被多路复用，并且每个传感器可以被操作，即几乎所有的时间都收集电荷。 因此，需要更少的组件来监视大量的电阻式检测器，信噪比几乎没有或没有降低。
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公开(公告)号：US5710377A
公开(公告)日：1998-01-20
申请号：US540616
申请日：1995-10-17
摘要： A system for detecting ultrasonic vibrations, such as those generated by a small leak in a pressurized container, vessel, pipe, or the like, comprises an ultrasonic transducer assembly and a processing circuit for converting transducer signals into an audio frequency range signal. The audio frequency range signal can be used to drive a pair of headphones worn by an operator. A diode rectifier based mixing circuit provides a simple, inexpensive way to mix the transducer signal with a square wave signal generated by an oscillator, and thereby generate the audio frequency signal. The sensitivity of the system is greatly increased through proper selection and matching of the system components, and the use of noise rejection filters and elements. In addition, a parabolic collecting horn is preferably employed which is mounted on the transducer assembly housing. The collecting horn increases sensitivity of the system by amplifying the received signals, and provides directionality which facilitates easier location of an ultrasonic vibration source.
摘要翻译： 用于检测超声波振动的系统，例如由加压容器，容器，管等中的小泄漏产生的超声波振动的系统，包括超声换能器组件和用于将换能器信号转换成音频频率范围信号的处理电路。 音频范围信号可用于驱动由操作者佩戴的一对耳机。 基于二极管整流器的混合电路提供了一种简单，便宜的方法来将换能器信号与由振荡器产生的方波信号混合，从而产生音频信号。 通过系统组件的适当选择和匹配以及使用噪声抑制滤波器和元件，可以大大提高系统的灵敏度。 此外，优选地使用安装在换能器组件壳体上的抛物线收集喇叭。 收集喇叭通过放大接收到的信号来增加系统的灵敏度，并且提供便于更容易定位超声波振动源的方向性。
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公开(公告)号：US5561290A
公开(公告)日：1996-10-01
申请号：US488523
申请日：1995-06-09
CPC分类号： G08B17/12 , G01J1/02 , G01J1/08 , G01J1/0403 , G01J1/0418 , G01J1/0437 , G01J1/0444 , G01J1/0448
摘要： An optical detector calibrator system simulates a source of optical radiation to which a detector to be calibrated is responsive. A light source selected to emit radiation in a range of wavelengths corresponding to the spectral signature of the source is disposed within a housing containing a microprocessor for controlling the light source and other system elements. An adjustable iris and a multiple aperture filter wheel are provided for controlling the intensity of radiation emitted from the housing by the light source to adjust the simulated distance between the light source and the detector to be calibrated. The geared iris has an aperture whose size is adjustable by means of a first stepper motor controlled by the microprocessor. The multiple aperture filter wheel contains neutral density filters of different attenuation levels which are selectively positioned in the path of the emitted radiation by a second stepper motor that is also controlled by the microprocessor. An operator can select a number of detector tests including range, maximum and minimum sensitivity, and basic functionality. During the range test, the geared iris and filter wheel are repeatedly adjusted by the microprocessor as necessary to simulate an incrementally increasing simulated source distance. A light source calibration subsystem is incorporated in the system which insures that the intensity of the light source is maintained at a constant level over time.
摘要翻译： 光学检测器校准器系统模拟待校准的检测器响应的光辐射源。 选择用于发射对应于源的光谱特征的波长范围内的辐射的光源被设置在包含用于控制光源和其它系统元件的微处理器的壳体内。 提供可调节虹膜和多孔滤光轮，用于控制由光源从壳体发射的辐射的强度，以调节光源和要校准的检测器之间的模拟距离。 齿轮传动的虹膜具有通过由微处理器控制的第一步进电机可调节的孔径。 多孔滤光轮包含不同衰减水平的中性密度滤光片，它们被微处理器控制的第二步进电机选择性地定位在发射辐射的路径中。 操作员可以选择多种检测器测试，包括范围，最大和最小灵敏度以及基本功能。 在范围测试期间，必要时由微处理器重复调整齿轮传动的虹膜和滤光轮以模拟逐渐增加的模拟源距离。 在系统中并入光源校准子系统，其确保光源的强度随时间保持在恒定水平。
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公开(公告)号：US5412221A
公开(公告)日：1995-05-02
申请号：US233584
申请日：1994-04-26
IPC分类号： G01N15/06
CPC分类号： G01N15/06
摘要： A particle fallout/activity sensor measures relative amounts of dust or other particles which collect on a mirror in an area to be monitored. The sensor includes a sensor module and a data acquisition module, both of which can be operated independently of one another or in combination with one another. The sensor module includes a housing containing the mirror, an LED assembly for illuminating the mirror and an optical detector assembly for detecting light scattered off of the mirror by dust or other particles collected thereon. A microprocessor controls operation of the sensor module's components and displays results of a measurement on an LCD display mounted on the housing. A push button switch is also mounted on the housing which permits manual initiation of a measurement. The housing is constructed of light absorbing material, such as black delrin, which minimizes detection of light by the optical detector assembly other than that scattered by dust or particles on the mirror. The data acquisition module can be connected to the sensor module and includes its own microprocessor, a timekeeper and other digital circuitry for causing the sensor module to make a measurement periodically and send the measurement data to the data acquisition module for display and storage in memory for later retrieval and transfer to a separate computer. The time tagged measurement data can also be used to determine the relative level of activity in the monitored area since this level is directly related to the amount of dust or particle fallout in the area.
摘要翻译： 颗粒沉降/活性传感器测量在被监测区域中的镜子上收集的灰尘或其他颗粒的相对量。 该传感器包括一个传感器模块和一个数据采集模块，它们都可以彼此独立运行或彼此组合操作。 传感器模块包括容纳反射镜的壳体，用于照射反射镜的LED组件和用于检测由其上收集的灰尘或其它颗粒散射离开反射镜的光的光学检测器组件。 微处理器控制传感器模块组件的操作，并在安装在外壳上的LCD显示屏上显示测量结果。 按钮开关也安装在壳体上，允许手动启动测量。 外壳由诸如黑色delrin的光吸收材料构成，其最小化除了由镜子上的灰尘或颗粒散射的光检测器组件的光的检测。 数据采集模块可以连接到传感器模块，并且包括其自己的微处理器，计时器和其他数字电路，用于使传感器模块周期性地进行测量，并将测量数据发送到数据采集模块，以便在存储器中显示和存储 稍后检索并转移到单独的计算机。 时间标记的测量数据也可用于确定监测区域中的相对活动水平，因为该水平与该区域的灰尘或颗粒物的沉降量直接相关。
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