公开(公告)号：US3995207A

公开(公告)日：1976-11-30

申请号：US523902

申请日：1974-11-14

申请人： Allan S. Way

发明人： Allan S. Way

IPC分类号： G01J3/06 ,  G05B19/28 ,  G01J3/42

CPC分类号： G01J3/06

摘要： A spectrophotometer including a wavelength stepper motor driving a wavelength scanning mechanism and a chart stepper motor driving a chart recorder, both motors being operative in response to driving pulses received from a system clock. The upper limit of a wavelength scan interval is established by manually adjusting the wavelength scanning mechanism to the desired limit. The length of a desired scan interval is selected by the operator and loaded into a counter which decrements in response to the driving pulse input to the wavelength motor. The counter generates an output signal after a predetermined count which clocks a switching circuit for reversing, inhibiting, or otherwise controlling the wavelength and chart motors. Other inputs to the switching circuit provide for either serial or overlay chart recording and for either continuous or manually controlled scanning.

摘要翻译： 一种分光光度计，包括驱动波长扫描机构的波长步进电机和驱动图表记录器的图表步进电机，两个电动机响应于从系统时钟接收的驱动脉冲而工作。 波长扫描间隔的上限是通过将波长扫描机制手动调节到所需极限来建立的。 期望的扫描间隔的长度由操作者选择并加载到响应于输入到波长电动机的驱动脉冲而递减的计数器。 该计数器在预定的计数之后产生一个输出信号，该计数计时器用于反转，禁止或以其它方式控制波长和图表电机。 开关电路的其他输入提供串行或重叠图表记录以及连续或手动控制扫描。

公开(公告)号：US4176958A

公开(公告)日：1979-12-04

申请号：US881082

申请日：1978-02-24

申请人： Allan S. Way ,  Taylor A. Reid

发明人： Allan S. Way ,  Taylor A. Reid

IPC分类号： G01J3/42

CPC分类号： G01J3/42

摘要： A double beam, optical null spectrophotometer including means for automatically determining system loop gain requirements and setting the gain to the correct value for optimum response under all operating conditions. With the system ready for operation and a sample in the sample beam path, a difference signal is generated as a function of the position of a reference beam attenuator with and without a small unbalancing signal applied to the system loop. This difference signal is compared to a desired difference signal and a loop gain adjustment is made so that the difference signal will equal the desired difference signal, thereby establishing instrument gain for optimum response.

摘要翻译： 双光束，光学零分光光度计，包括用于自动确定系统环路增益要求并将增益设置为正确值的装置，以在所有操作条件下获得最佳响应。 随着系统准备就绪和样本光束路径中的采样，产生差分信号作为参考光束衰减器的位置的函数，具有和不具有施加到系统环路的小的不平衡信号。 将该差分信号与期望的差分信号进行比较，并进行环路增益调整，使得差分信号将等于期望的差分信号，从而建立用于最佳响应的仪器增益。

公开(公告)号：US4101219A

公开(公告)日：1978-07-18

申请号：US702252

申请日：1976-07-02

申请人： Allan S. Way

发明人： Allan S. Way

IPC分类号： G01J3/28 ,  G01J3/42 ,  G01R15/10

CPC分类号： G01J3/42 ,  G01J2003/2866

摘要： A double beam optical null spectrophotometer having sample and reference optical beam paths, a detector common to both paths, and an attenuator feedback loop from the detector for adjusting the position of an optical attenuator in the reference beam path to balance the energy in the two paths. The slider of an attenuator transmitting potentiometer follows the position of the optical attenuator and a signal level sensitive impedance network connected to the slider calibrates the potentiometer such that an output signal therefrom indicates the true transmittance of a sample in the sample beam path over a range of transmittance values from zero to one hundred percent transmittance.

摘要翻译： 具有采样和参考光束路径的双光束光学零分光光度计，两条路径共同的检测器和来自检测器的衰减器反馈回路，用于调整参考光束路径中光衰减器的位置以平衡两条路径中的能量 。 衰减器传输电位器的滑块跟随光衰减器的位置，并且连接到滑块的信号电平敏感阻抗网络校准电位计，使得其输出信号表示样品光路中的样品在一定范围内的真实透射率 透光率值从零到百分之百的透光率。

公开(公告)号：US3942893A

公开(公告)日：1976-03-09

申请号：US522607

申请日：1974-11-11

申请人： Allan S. Way

发明人： Allan S. Way

IPC分类号： G01J3/06 ,  G01J3/42

CPC分类号： G01J3/06

摘要： A spectrophotometer system having a first stepper motor driving a wavelength scanning mechanism and a second stepper motor driving a chart recorder, both motors being operative in response to pulses from a system clock. The clock frequency is successively divided by first and second cascaded, switch-selectable sets of frequency dividers. The output of the first divider is applied to the wavelength motor and determines wavelength scan speed. The output of the second divider is applied to the chart motor and determines chart scale expansion. A decoder monitors the frequency selections of the first and second sets of frequency dividers, and upon detection of a frequency selection outside the capability of the chart motor, the decoder provides an output which inhibits both motors. The decoder output additionally actuates a visual indicator to inform an operator of the invalid selection.

摘要翻译： 一种具有驱动波长扫描机构的第一步进电机和驱动图表记录器的第二步进电机的分光光度计系统，两个电机响应于来自系统时钟的脉冲而工作。 时钟频率由第一级和第二级联的可切换选择的分频器组相继划分。 第一分频器的输出被施加到波长电机并确定波长扫描速度。 第二个分频器的输出应用于图表电机，并确定图表比例扩展。 解码器监视第一和第二组分频器的频率选择，并且在检测到图表电机的能力之外的频率选择时，解码器提供抑制两个电动机的输出。 解码器输出另外启动视觉指示器以通知操作者无效选择。

公开(公告)号：US4074272A

公开(公告)日：1978-02-14

申请号：US656463

申请日：1976-02-09

申请人： Allan S. Way ,  Thomas J. Glenn ,  Howard J. Sloane ,  Gerald T. Keahl

发明人： Allan S. Way ,  Thomas J. Glenn ,  Howard J. Sloane ,  Gerald T. Keahl

IPC分类号： G01D9/10 ,  G01J3/02 ,  G01R17/00 ,  G01D5/26 ,  G01D9/38

CPC分类号： G01R17/00

摘要： A variable chart format system for a recorder with a chart print out, the system having a manually selectable switch for simultaneously controlling the abscissa and ordinate formatting independent of scale expansion circuitry normally associated with the abscissa and ordinate. The abscissa formatting is digital and operable in response to a programmable or variable clock, the output of which is selectively passed through a first set of abscissa formatting frequency dividers and then serially through one of a second set of abscissa scale expansion frequency dividers to drive a chart drive stepper motor. The ordinate formatting is analog and includes ordinate scale expansion circuitry in series with the servomotor and ordinate formatting selectable compensating resistors in series with the recording pen potentiometer or slidewire, the selectable compensating resistors being selected simultaneously with the abscissa formatting dividers to thereby preselect a chart format by a single control without affecting the abscissa or ordinate expansion circuitry.

公开(公告)号：US4000946A

公开(公告)日：1977-01-04

申请号：US633512

申请日：1975-11-20

申请人： Allan S. Way ,  Stanley L. Pratt

发明人： Allan S. Way ,  Stanley L. Pratt

IPC分类号： G01J3/06 ,  G01J3/42

CPC分类号： G01J3/06

摘要： A tracking accuracy control system for a spectrophotometer utilizing stepper motors for controlling the wavelength drive and chart drive system. An exact ratio between the wavelength drive motor and chart drive motor is maintained under variable speed conditions by utilizing an error signal which normally operates the reference beam attenuator, this error signal being transmitted through an absolute value circuit to produce a voltage whose magnitude is the absolute value of the error signal. This absolute value is then transmitted through a fast attack, slow release hold-over circuit to control a voltage controlled oscillator in such a way as to reduce wavelength scan speed in an amount proportional to the error while simultaneously controlling chart speed in an exact ratio to the scan speed. The output of the voltage controlled oscillator is a pulse train having a frequency proportional to the magnitude of the absolute value of error signal.

摘要翻译： 用于分光光度计的跟踪精度控制系统，利用步进电机控制波长驱动和图表驱动系统。 通过利用通常操作参考光束衰减器的误差信号，波长驱动电机和图表驱动电机之间的精确比例保持在变速条件下，该误差信号通过绝对值电路传输，以产生幅度为绝对值的电压 误差信号的值。 然后通过快速攻击，缓慢释放保持电路传输该绝对值，以控制压控振荡器，以便以与误差成比例的量减少波长扫描速度，同时以精确的比率控制图表速度 扫描速度。 压控振荡器的输出是具有与误差信号的绝对值的大小成比例的频率的脉冲串。