公开(公告)号：US20080115564A1

公开(公告)日：2008-05-22

申请号：US11938469

申请日：2007-11-12

Applicant: Ludwig Buchberger ,  Robert Frodl

Inventor： Ludwig Buchberger ,  Robert Frodl

IPC: G01N7/00 ,  H03F3/45

CPC classification number: G01D1/18 ,  G01J1/44 ,  G01J3/42 ,  G01N21/274 ,  G01N21/3504 ,  G01N33/004 ,  G01N2201/12715

Abstract: A method of processing an analog sensor signal is disclosed. The method includes feeding the analog sensor signal into a first input of an operational amplifier, amplifying the analog sensor signal using the operational amplifier, measuring the amplified analog sensor signal, and comparing the amplified analog sensor signal with a threshold value. The method also includes generating a direct voltage depending on a difference between the amplified analog sensor signal and the threshold value, forming a difference signal from the analog sensor signal and the direct voltage, and amplifying the difference signal and outputting an output signal.

Abstract translation: 公开了一种处理模拟传感器信号的方法。 该方法包括将模拟传感器信号馈送到运算放大器的第一输入端，使用运算放大器放大模拟传感器信号，测量放大的模拟传感器信号，以及将放大的模拟传感器信号与阈值进行比较。 该方法还包括根据放大的模拟传感器信号和阈值之间的差异产生直接电压，形成来自模拟传感器信号和直流电压的差分信号，以及放大差分信号并输出​​输出信号。

公开(公告)号：US4933543A

公开(公告)日：1990-06-12

申请号：US101359

申请日：1987-09-25

Applicant: Frank A. Hull

Inventor： Frank A. Hull

IPC: G01J1/02 ,  G01J3/02 ,  G01J3/28 ,  G01J5/00 ,  G01J5/28 ,  G01N21/27 ,  G01N21/59 ,  H04N5/361 ,  H04N5/369

CPC classification number: G01J3/28 ,  G01J3/02 ,  G01J3/0286 ,  G01J3/2803 ,  G01N21/274 ,  G01N21/5907 ,  H04N5/361 ,  H04N5/3692 ,  G01J2005/0048 ,  G01J2005/283 ,  G01N2201/12715

Abstract: Three means or methods for compensating for thermal noise, also referred to as dark signal, are utilized to enhance the accuracy of a monolithic diode array. A charge-coupled linear photodiode array is used in a camera to detect densities of any image projected or reflected onto the array. After conversion, voltage variations of one/one thousandth (1/1,000) volt in a ten volt range are significant to the measurement of densities. Therefore, extremely accurate control of thermal noise, which is generated in the cell sites and in the shift registers used to obtain the data from the cell sites, is extremely important. The three methods or means of control are as follows. Temperature control maintains the temperature of the photodiode array at approximately ten degrees centigrade to minimize the generation of thermal noise. A thermistor is used to detect any temperature variations within the range controlled by the cooling means and the reading is compensated for those variations in temperature. Finally, thermal noise generated in masked cells are measured and used as a correction or calibration for the readings. The foregoing means and methods enhance the accuracy of the readings by an order of magnitude.

Abstract translation: 用于补偿热噪声的三种手段或方法（也称为暗信号）用于提高单片二极管阵列的精度。 在相机中使用电荷耦合线性光电二极管阵列来检测投影或反射到阵列上的任何图像的密度。 转换后，在十伏范围内1/ /千分之一（1 / 1,000）伏的电压变化对密度的测量是重要的。 因此，非常重要的是非常重要的是在小区站点和用于从小区站点获得数据的移位寄存器中产生的热噪声的非常精确的控制。 三种控制方法或手段如下。 温度控制将光电二极管阵列的温度保持在大约十摄氏度，以最小化热噪声的产生。 热敏电阻用于检测由冷却装置控制的范围内的任何温度变化，并且对这些温度变化补偿读数。 最后，测量在掩蔽电池中产生的热噪声，并将其用作读数的校正或校准。 上述手段和方法将读数的精度提高一个数量级。