公开(公告)号：US06935564B2

公开(公告)日：2005-08-30

申请号：US09918035

申请日：2001-07-30

申请人： Paul E. Purpura ,  Jerry Harper

发明人： Paul E. Purpura ,  Jerry Harper

IPC分类号： G06K7/10 ,  G06F7/10

CPC分类号： G06K7/10851

摘要： A systems and method generate a progressively corrected scan signal, the progressively corrected scan signal having a magnitude independent of spectral reflectance from a background near a target. One of the methods involves generating a baseline signal by sampling light reflected from the target and background before transmitting a light scan at the target, generating a detected signal by receiving light reflected from the target and background while transmitting the light scan at the target, and subtracting the baseline signal from the detected signal to form the progressively corrected scan signal. One circuit embodiment produces an average level independent output signal from an input signal subject to fluctuations in average level.

摘要翻译： 系统和方法产生逐渐校正的扫描信号，逐渐校正的扫描信号具有与目标附近的背景光谱反射率无关的幅度。 方法之一涉及通过在目标发射光扫描之前对从目标和背景反射的光进行采样来生成基线信号，通过从目标和背景反射的光产生检测信号，同时在目标点发射光扫描;以及 从检测到的信号中减去基线信号，以形成逐渐校正的扫描信号。 一个电路实施例从平均电平波动的输入信号产生平均电平独立的输出信号。

公开(公告)号：US4659910A

公开(公告)日：1987-04-21

申请号：US728886

申请日：1985-04-30

申请人： Archie J. Harrison, Jr. ,  Jerry Harper ,  Fred L. Katzmann

发明人： Archie J. Harrison, Jr. ,  Jerry Harper ,  Fred L. Katzmann

IPC分类号： G01D3/02 ,  G01R15/00 ,  G01R17/02 ,  G01R19/03 ,  H05B1/02

CPC分类号： G01R17/02 ,  H03F2200/261

摘要： A compensation circuit for a heater wire and a temperature sensor, the temperature sensor generating a signal whose amplitude is dependent upon the amplitude of the voltage across the heater wire. The circuit comprises a comparator circuit and a priority encoder circuit for generating digital information that is a function of the amplitude of the voltage in the heater wire; a multiplexor/demultiplexor circuit, responsive to the digital information generated, for generating a reversal error compensation signal, the generated reversal error compensation signal having an amplitude that is a function of the Peltier and Thomson effects associated with the heater wire; and amplifier/chopper circuits adapted to generate a compensated sensor signal that is a function of the reversal error compensation signal and the uncompensated sensor signal. The amplitude of the compensated sensor signal is approximately that of the signal generated by the sensor in the absence of the Peltier and Thomson effects associated with the heater wire.

摘要翻译： 用于加热器线和温度传感器的补偿电路，温度传感器产生其幅度取决于加热线两端的电压振幅的信号。 该电路包括一个比较器电路和一个优先编码器电路，用于产生作为加热线中的电压振幅的函数的数字信息; 多路复用器/解复用器电路，响应于产生的数字信息，用于产生反向误差补偿信号，所产生的反向误差补偿信号具有作为与加热器线相关联的珀尔帖和汤姆逊效应的函数的幅度; 以及适于产生作为反向误差补偿信号和未补偿传感器信号的函数的补偿传感器信号的放大器/斩波电路。 补偿的传感器信号的幅度大约是在没有与加热器线相关联的珀尔帖和汤姆森效应的情况下由传感器产生的信号的振幅。

公开(公告)号：US4733322A

公开(公告)日：1988-03-22

申请号：US022541

申请日：1987-03-03

申请人： Jerry Harper ,  Archie J. Harrison, Jr.

发明人： Jerry Harper ,  Archie J. Harrison, Jr.

IPC分类号： G01R17/06 ,  G01R19/22 ,  H02H3/087 ,  H01H5/04

CPC分类号： H02H3/087 ,  G01R17/06 ,  G01R19/225 ,  H03F2200/261

摘要： An overload protection circuit for an AC-DC transfer standard employing a thermoelement comprising a heater element and a temperature sensor. A first differentiator provides an output that is a function of the voltage across the heater element. A second differentiator produces an output that is a function of the output of the first differentiator. Further including a circuit creating an overload signal provided, which is responsive to the outputs of the first and second differentiators.

摘要翻译： 一种用于采用包括加热器元件和温度传感器的热电偶的AC-DC传输标准的过载保护电路。 第一微分器提供的输出是加热器元件两端的电压的函数。 第二微分器产生作为第一微分器的输出的函数的输出。 还包括产生提供的过载信号的电路，其响应于第一和第二微分器的输出。