| 摘要 |
An apparatus for displaying a numeric value corresponding to the volume of a segment of an item comprises a support surface for supporting the item, a sensor arrangement, and a sensor arrangement support. The sensor arrangement generates signals corresponding to the contour of successive sections of the item passed over by the sensor arrangement support as the sensor arrangement support is moved from a position over any section of the item to be positioned above any selected other section of the item, through the use of plungers and motion detecting plunger accelerometers. The apparatus also comprises of a displacement detector arrangement, including an accelerometer arrangement, which generates signals corresponding to the displacement of the sensor arrangement support in moving from the position over any section of an item to a position above any selected other section of the item and a signal processor responsive to the signals generated by the displacement detector arrangement and sensor arrangement to compute therefrom the volume of a selected segment of the item defined between any section and other section of the item. A visible light projector on the sensor arrangement support projects a narrow band of visible light across the item to provide a visual indication on the item of the section of item over which the sensor arrangement support is positioned and a display displays a numeric value corresponding to the volume of the selected segment of the item as computed by the signal processor with the sensor arrangement support in position above any selected other section of the item.
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