公开(公告)号：WO1993012417A1

公开(公告)日：1993-06-24

申请号：PCT/US1992010595

申请日：1992-12-08

Applicant: MEASUREX CORPORATION

Inventor： MEASUREX CORPORATION ,  CHASE, Lee, MacArthur ,  ANDERSON, Leonard, M. ,  NORTON, Michael, Kent ,  BOSSEN, David, A.

IPC: G01N21/86

CPC classification number: G01N21/86 ,  D21F7/003 ,  G01N21/3559 ,  G01N2021/8663

Abstract: A sensor (32) and method is provided for measuring one or more select components of a material (18). The method measures the components by emitting electromagnetic radiation (42) at the material (18) and detecting the intensity of the emerging radiation at the material at separate locations (36, 37) from the source (38). The sensor (32) provides a radiation source (38) for emitting radiation (42) at a sheet (18), a plurality of detecting means (70-73, 82, 83, 90, 91, 98, 99), wherein the detecting means are offset from the source (38) substantially the same or unequally, for detecting radiation (42) after interaction with the sheet (18) and first and second reflectors (28, 30) for directing the radiation for multiple interactions with the sheet (18) when moving from the source aperture (34) to the detecting means. The invention can accurately measure the select components (e.g., moisture) of different grades of paper by eliminating the effects of the scattering power and determining absorption power at each band of the spectrum considered necessary for a particular measurement.

Abstract translation: 提供一种用于测量材料（18）的一个或多个选择部件的传感器（32）和方法。 该方法通过在材料（18）处发射电磁辐射（42）并且检测来自源（38）的分离位置（36,37）处的材料处的出射辐射的强度来测量部件。 传感器（32）提供用于在片材（18）处发射辐射（42）的辐射源（38），多个检测装置（70-73,82,83,90,91,98,99），其中 检测装置与源极（38）基本上相同或不相等地偏移，用于在与片材（18）相关联之后检测辐射（42），并且第一和第二反射器（28,30）用于引导辐射与片材的多次相互作用 （18）从所述源孔（34）移动到所述检测装置时。 本发明可以通过消除散射功率的影响并且确定在特定测量中认为必要的频谱的每个频带处，来确定不同等级的纸张的选择分量（例如湿度）。

公开(公告)号：WO1996035112A1

公开(公告)日：1996-11-07

申请号：PCT/US1996006157

申请日：1996-05-02

Applicant: MEASUREX CORPORATION

Inventor： MEASUREX CORPORATION ,  CHASE, Lee, M. ,  FOSKETT, Anthony, D.

IPC: G01N21/86

CPC classification number: G01N21/86

Abstract: An on-line laser triangulation position sensing system provides measurements of the surface features of a moving sheet such as paper. The measurements are correlatable with measurements made with standard laboratory surface smoothness testers and provide predictions of the printability of paper during its fabrication. The sensing system includes a segmented balance detector having a high frequency response. The sensing system further includes signal processing circuitry comprising a plurality of channels, each channel including a filter. The various filters have different cutoff frequencies for passing different frequency spectra representing ranges of surface feature scale sizes. The cutoff frequency of each filter is varied in response to variations in sheet speed. The sheet sensing system further includes a sheet stabilizer to minimize flutter in the measurement region and a standardizing member permitting performance verification of the sensor system at at least one scale size spectrum. The sensing system may also be provided with a sheet compressor to compress the sheet in the measurement region so as to simulate the pressures applied to sheet samples by laboratory air leak smoothness testers. The output of the position sensing system may be used in conjunction with various kinds of papermaking machines to control one or more of the many papermaking process parameters that determine the smoothness or texture of the final product. The sensing system can be used to measure tissue crepe and such measurement can be utilized to control various crepe-determining stages in a tissue making machine and to monitor the condition of the creping or doctor blade in such a machine.

Abstract translation: 在线激光三角测量位置感测系统提供诸如纸张的移动片材的表面特征的测量。 测量值与使用标准实验室表面平滑度测试仪进行的测量值相关，并提供纸张在其制造过程中的可印刷性的预测。 感测系统包括具有高频响应的分段平衡检测器。 感测系统还包括包括多个通道的信号处理电路，每个通道包括滤波器。 各种滤光器具有不同的截止频率，用于通过表示特征尺度尺寸范围的不同频谱。 每个过滤器的截止频率响应于纸张速度的变化而变化。 片材感测系统还包括片材稳定器，以最小化测量区域中的颤动;以及标准化构件，允许以至少一个尺度尺度光谱对传感器系统进行性能验证。 感测系统还可以设置有片材压缩机，以压缩测量区域中的片材，以便模拟通过实验室空气泄漏平滑度测试仪施加到片材样品的压力。 位置检测系统的输出可以与各种造纸机一起使用，以控制确定最终产品的平滑度或纹理的许多造纸工艺参数中的一个或多个。 感测系统可用于测量组织绉纱，并且可以利用这种测量来控制组织制作机中的各种绉纱确定阶段，并监测这种机器中起皱或刮刀的状况。

公开(公告)号：WO1991005217A1

公开(公告)日：1991-04-18

申请号：PCT/US1990005571

申请日：1990-10-04

Applicant: MEASUREX CORPORATION

Inventor： MEASUREX CORPORATION ,  DAHLQUIST, John, A.

IPC: G01B09/02

CPC classification number: G01J3/453 ,  G01N21/35 ,  G01N21/45 ,  G01N21/86 ,  G01N2201/101

Abstract: An on-line scanning sensor system (fig. 1) includes a mid-infrared spectrophotometric analyzer (fig. 2), such as an interferometer, that can be used on-line in manufacturing environments. More particularly, the on-line scanning sensor system includes a first carriage (36) for scanning motion across a traveling sheet of material (30); interferometer components that are carried by the first carriage and that include devices for splitting and recombining infrared light (51), and for directing a collimated beam of the recombined light onto a traveling web of sheet material (58). Further, the system includes a detector system (62) for receiving light from the interferometer components during scanning.

公开(公告)号：WO1991000492A1

公开(公告)日：1991-01-10

申请号：PCT/US1990003619

申请日：1990-06-26

Applicant: MEASUREX CORPORATION

Inventor： MEASUREX CORPORATION ,  KASTE, Mark ,  FOSTER, James ,  WEBER, Gregory

IPC: G01B03/00

CPC classification number: G01B7/107 ,  G01B2210/42

Abstract: A contacting caliper gauge for measuring the thickness of a moving sheet. The gauge has two extendible members located opposite one another on opposite sides of the sheet. Each extendible member forces a caliper pad into contact with the sheet. Each pad is connected to the extendible member so that the rear portion of the pad exerts greater pressure on the sheet than the front portion. Each pad is also preferably tapered so that the rear end surface and the sheet contacting surface form a sharp edge at the rear of the pad and an angle of 90 degrees or less. Both the shape of the pad and its positioning with respect to the extendible member act to limit build up of adhesive material on the sheet contacting surface of the pads.

公开(公告)号：WO1993019473A1

公开(公告)日：1993-09-30

申请号：PCT/US1993002621

申请日：1993-03-22

Applicant: MEASUREX CORPORATION ,  GOSS, John, D. ,  AXELROD, Steve ,  BOISSEVAIN, Mathew ,  HEGLAND, Philip, M. ,  WILEY, Scott, C.

Inventor： MEASUREX CORPORATION

IPC: G21F05/02

CPC classification number: G21F5/02

Abstract: A nuclear gauge (7) for making measurements of travelling webs (11) in continuous sheet-making processes includes an enclosure (20), an encapsulated nuclear source (28), and a wheel-like member (10) mounted in the enclosure means for carrying the encapsulated nuclear source between two angularly-displaced positions. The first of the angularly-displaced positions is the position whereat the encapsulated nuclear source makes measurements of a web that travels past the gauge, and the second position is the location whereat the encapsulated nuclear source faces a sidewall of the enclosure means at a location remote from the first position. The nuclear gauge also has an aperture (16) which is formed through the enclosure for providing a window through which the encapsuled nuclear source, when located in the first position, can emit radiation onto a web that travels past the window.

公开(公告)号：WO1992014135A1

公开(公告)日：1992-08-20

申请号：PCT/US1992000042

申请日：1992-01-03

Applicant: MEASUREX CORPORATION

Inventor： MEASUREX CORPORATION ,  ANDERSON, Leonard, M.

IPC: G01N21/35

CPC classification number: D21F7/003 ,  G01N21/3559 ,  G01N2021/3137 ,  G01N2021/3148 ,  G01N2021/3166 ,  G01N2021/3188 ,  G01N2021/8663

Abstract: An infrared web moisture sensor (10) which is substantially temperature and basis weight insensitive comprises a source (16) of infrared radiation for directing an infrared beam (24) through the web (12) and an infrared detecting unit (18) on the other side of the web which measures the transmission of the infrared beam troough the web at three separate wavelength regions. The transmission in the first wavelength region is primarily sensitive to the moisture content of the web. The transmission in the second wavelength region is less sensitive to the moisture content. The transmission in the third wavelength region provides an indication of the web temperature. Temperature insensitivity is achieved by selecting the temperature response of a measurement band pass filter (42) and a reference band pass filter (40) based on the maximum basis weight and the maximum moisture content of the web and compensating for any remaining temperature sensitivity with a temperature correction band pass filter (48).

公开(公告)号：WO1992004621A1

公开(公告)日：1992-03-19

申请号：PCT/US1991006005

申请日：1991-08-22

Applicant: MEASUREX CORPORATION

Inventor： MEASUREX CORPORATION ,  BOSSEN, David, A. ,  BOISSEVAIN, Mathew, G. ,  HOUGHTON, Paul, J.

IPC: G01N23/16

CPC classification number: G01N23/16

Abstract: Sheet-gauging apparatus for gauging properties of moving sheet material and having upper and lower gauging heads is provided. The sheet-gauging apparatus includes liquid conduction means to cause liquid to flow in thermal communication with portions of the system and to thereby reduce temperature gradients within the system.

Abstract translation: 提供了用于测量移动片材的性能并具有上和下测量头的片材测量装置。 片材测量装置包括液体传导装置，以使液体与系统的部分热连通地流动，从而降低系统内的温度梯度。

公开(公告)号：WO1990015393A1

公开(公告)日：1990-12-13

申请号：PCT/US1990002961

申请日：1990-05-25

Applicant: MEASUREX CORPORATION

Inventor： MEASUREX CORPORATION ,  SHEAD, Ray ,  ANDERSON, Leonard, M.

IPC: G06F15/46

CPC classification number: G05D22/02 ,  B31F1/284 ,  Y10T156/1021 ,  Y10T156/1025

Abstract: The apparatus and method of the present invention provide means by which non-warped corrugated paperboard sheet (10) may easily and consistently be produced. The cross-directional moisture content profiles of the top and bottom liners (12, 16) of the corrugated sheet (10) are automatically monitored, and controlled with independently operable water jets (19, 23) such that the liners (12, 16) have approximately equal machine and cross-direction moisture content profiles. The moisture content profiles of the liners (12, 16) are controlled to equalize the machine direction and cross-directional stresses created within the liners (12, 16) as they dry out, thereby producing non-warped corrugated paperboard sheet (10).

公开(公告)号：WO1996042010A1

公开(公告)日：1996-12-27

申请号：PCT/US1996009738

申请日：1996-06-10

Applicant: MEASUREX CORPORATION

Inventor： MEASUREX CORPORATION ,  ALGUARD, Mark, J.

IPC: G01N21/86

CPC classification number: G01J3/50 ,  G01J3/0259 ,  G01J3/10 ,  G01J3/502 ,  G01J3/524 ,  G01N21/255 ,  G01N21/86

Abstract: Disclosed is an apparatus for measuring on-line the color and color-related properties of a moving sheet. Contrast ratio reflectance measurements are made for providing opacity corrections substantially in real time for a full color spectrum. An optical color sensor in accordance with the invention includes a pair of synchrhonized spectrometers, the first spectrometer being aligned to view a region of the sheet backed with a highly reflective ("white") material and the second spectrometer being aligned to view a region of the sheet backed with a higly absorptive ("black") material. The use of two spectrometers permits substantially simultaneous "black" and "white" measurements for a full color spectrum. The optical color sensing system further includes two light sources, a flashlamp and a continuously energized tungsten filament lamp. Light beams from the two sources are combined to form a sheet-illuminating third beam approximating the D65 standard source. The intensity of the flashlamp is electronically controlled to maintain the balance of UV to visible light that characterizes the standard source. The color sensor further includes a sheet backing system including a rotatable standard wheel carrying a white standard tile. Provision is made to permit rotation of the standard wheel and to standardize the sensor off-sheet while maintaining isolation of the white standard tile from the paper mill environment.

Abstract translation: 公开了一种用于在线测量移动片材的颜色和颜色相关性质的装置。 对比度反射率测量用于为全色谱实质上实时提供不透明度校正。 根据本发明的光学颜色传感器包括一对同步光谱仪，第一光谱仪被对准以观察具有高反射（“白”）材料的片材的区域，并且第二光谱仪被对准以观察 该片材采用高吸收（“黑色”）材料。 使用两个光谱仪可以实现全色同步的“黑色”和“白色”测量。 光学颜色感测系统还包括两个光源，闪光灯和连续通电的钨丝灯。 来自两个源的光束被组合以形成近似D65标准源的片状照明第三光束。 闪光灯的强度是电子控制的，以保持紫外线到可见光的平衡，表征标准源。 该颜色传感器还包括一个片材背衬系统，其包括一个承载白色标准砖的可旋转的标准轮。 规定允许标准轮的旋转并标准化传感器脱模，同时保持白色标准砖与造纸厂环境的隔离。

公开(公告)号：WO1995006914A1

公开(公告)日：1995-03-09

申请号：PCT/US1994009713

申请日：1994-09-02

Applicant: MEASUREX CORPORATION

Inventor： MEASUREX CORPORATION ,  HE, George, X.

IPC: G06F17/00

CPC classification number: G01N21/89 ,  G01B7/287 ,  G01N33/34

Abstract: In a continuous sheetmaking process, a synthetic measurement is constructed having a higher signal to noise ratio than that of each original measurement in situations where more than one redundant measurement is available. The dynamic characteristics are assumed to be identical except for a gain factor. A cross directional control system is employed in which a plurality of actuators (23) apply excitation signals of equal magnitude to the system. Data is then recovered by the scanning head of the sensor (30). A root means square or average calculation can be conducted at each sample interval such that only the synthetic measurement series needs to be collected and not all of the original measurements.

Abstract translation: 在连续制片过程中，在多于一个冗余测量可用的情况下，构建具有比每个原始测量值更高的信噪比的合成测量。 除了增益因子之外，假定动态特性是相同的。 采用横向控制系统，其中多个致动器（23）对系统施加相等幅度的激励信号。 数据然后由传感器（30）的扫描头恢复。 一个根是指可以在每个采样间隔进行平方或平均计算，以便只需要收集合成测量系列，而不是全部原始测量。