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    • 2. 发明授权
    • Calibration of capacitance probe
    • 电容探头的校准
    • US5583443A
    • 1996-12-10
    • US481161
    • 1995-06-07
    • David R. McMurtryDavid K. ThomasDavid C. Bound
    • David R. McMurtryDavid K. ThomasDavid C. Bound
    • G01B7/00G01B7/008G01B7/02G01B7/28G01B7/34G01N13/20G01N37/00G01R27/26G01R35/00
    • G01B7/008G01B7/023G01B7/28G01B7/34
    • A capacitance probe is used by a coordinate measuring machine or machine tool to determine distances from the probe to the workpiece surface at various points over the surface. The probe is calibrated by moving it along a line, which is skewed to the surface. During this movement, a plurality of values of the capacitance and the corresponding values of the actual distance moved along the line are recorded. A datum value for the movement along the skewed line is also determined, which corresponds to a position at which the probe would touch the surface. The probe is calibrated without needing separate independent measurements of the distance from the probe to the surface. The workpiece surface is scanned using the thus-calibrate probe, in which different calibration values are used at different points on the surface, in order to account for the local shape of the surface.
    • 坐标测量机或机床使用电容探头来确定表面上各个点处从探头到工件表面的距离。 通过沿着与表面倾斜的线移动探头来校准探针。 在该移动期间,记录电容的多个值和沿线移动的实际距离的对应值。 还确定了沿着偏斜线的移动的基准值,其对应于探针将接触表面的位置。 探头被校准,无需对从探头到表面的距离进行独立的独立测量。 使用如此校准的探头扫描工件表面,其中在表面上的不同点使用不同的校准值,以便考虑表面的局部形状。
    • 4. 发明授权
    • Scanning probe microscope
    • 扫描探针显微镜
    • US07404313B2
    • 2008-07-29
    • US11374842
    • 2006-03-14
    • Kazutoshi Watanabe
    • Kazutoshi Watanabe
    • G01B5/28G01N13/16G01N13/20
    • G01Q60/40G01Q20/04G01Q60/30
    • A scanning probe microscope has a self-detection type probe structure including a cantilever having an electrically conductive probe at a distal end thereof, a supporting part, and a piezoresistance element whose resistance value changes depending on the deflection of the cantilever. A detector applies a predetermined voltage to the piezoresistance element and detects the value of the current passing through the piezoresistance element to detect deflection of the cantilever. A sample table mounts a sample such that a surface of the sample confronts a tip of the probe, and a moving mechanism relatively moves the sample table and the probe tip in X, Y and Z directions. A controller controls the moving mechanism to maintain a fixed distance between the probe tip and the sample surface and measures the surface shape of the sample on the basis of the detection result of the detector. A predetermined voltage is applied between the probe and the sample surface, and a measuring part operates simultaneously with the detector and measures electrical property information caused by the applied voltage.
    • 扫描探针显微镜具有自检型探针结构,其包括在其远端具有导电探针的悬臂,支撑部和耐电阻值根据悬臂的偏转而变化的压阻元件。 检测器将预定电压施加到压阻元件,并检测通过压阻元件的电流值,以检测悬臂的偏转。 样品台安装样品,使得样品的表面面对探针的尖端,并且移动机构使样品台和探针尖端在X,Y和Z方向上相对移动。 控制器控制移动机构以在探针尖端和样品表面之间保持固定的距离,并且基于检测器的检测结果测量样品的表面形状。 在探针和样品表面之间施加预定的电压,并且测量部分与检测器同时操作并测量由所施加的电压引起的电特性信息。