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    • 1. 发明专利
    • CROP SHAPE MEASURING DEVICE
    • JPH07167632A
    • 1995-07-04
    • JP31369493
    • 1993-12-14
    • NIPPON STEEL CORP
    • HORIKOSHI KIYOMI
    • G01B11/24B21B15/00B21B37/00B21B38/02B21C51/00G01B11/245
    • PURPOSE:To measure a crop shape automatically with high accuracy by correcting and processing errors due to a slip generated between a steel plate and a PLG, and abrasion of a conveyor roller. CONSTITUTION:Crop shapes at the front end and tail end sections of a conveyed 4 steel plate 5 are input to one-dimensional line sensor cameras 1-1 to 1-3 fixed at regular intervals as one-dimensional images, and the crop shapes are transmitted over a two-dimensional image processor 6 respectively. A PLG 3 disposed to one roller 4 in a plurality of conveyor rollers 4 measures a travel, in which the front end and tail end sections of the steel plate 5 pass on each camera 1, at that time and transmits it over an arithmetic unit 7. The processor 6 successively matches input one-dimensional image data and forms a two-dimensional image, and measures the crop shapes of the front end and tail end sections of the steel plate 5. The unit 7 successively compares the previously measured spaces of each camera 1 and the result of the measurement of the PLG 3, arithmetically operates the error of measurement due to a slip between the steel plate 5 and the roller 4 in the measurement of the PLG 3 and the abrasion of the roller, and corrects and processes the result of the measurement of the crop shape of the processor 6.
    • 2. 发明专利
    • INSPECTION DEVICE FOR NONMETALLIC INCLUSION
    • JPH0252251A
    • 1990-02-21
    • JP20339188
    • 1988-08-16
    • NIPPON STEEL CORP
    • HORIKOSHI KIYOMISUGIMOTO TAKAOFUJIKAKE YOUICHI
    • G01N33/20
    • PURPOSE:To identify a nonmetallic inclusion which is in the same shape and contains different components by converting an image of the nonmetallic inclusion which is magnified by a metal microscope into an electric signal and then converting the signal into a multi-level signal corresponding to the light and shade of the image. CONSTITUTION:The image of the nonmetallic inclusion which is magnified by the metal microscope 1 is converted by a television camera 2 into the electric signal, which is converted by a converter 4 into the multi-level image signal corresponding to the light and shade of the image. This image signal is stored in the memory 5 of an image input/output device 3. Then the size measurement instrument 7 of a nonmetallic inclusion classifying device 6 measures the length, width, and their ratio of the nonmetallic inclusion from the image signal. Further, the device 8 of the same device 6 classifies soft and hard inclusions in the nonmetallic inclusion by plural threshold levels according to the concentration, furthermore converts into binary signal.
    • 8. 发明专利
    • APPARATUS FOR MEASUREMENT OF STEEL SHEET SHAPE
    • JPH08320215A
    • 1996-12-03
    • JP12839395
    • 1995-05-26
    • NIPPON STEEL CORPMITSUBISHI ELECTRIC CORP
    • HORIKOSHI KIYOMIUEKI KATSUYASUGIYAMA MASAYUKI
    • G01B11/24B21B15/00B21C51/00G01B11/245G01J5/00
    • PURPOSE: To lessen the binary processing error owing to difference of the steel sheet temperature by obtaining a constant photoelectric element output signal even if the temperature of a steel sheet alters by measuring the temperature of the steel sheet by a radiation temperature gauge and controlling charge accumulating time for the photoelectric element, and then carrying out partial binary processing based on a peak holding treatment based on two-dimensional spatial differentiation. CONSTITUTION: A plurality of optical systems employing lens and groups of photoelectric elements 3 arranged in a line are installed in an upper part of a red heated steel sheet 1 and scanning is carried out by the groups of photoelectric elements 3 by receiving the driving signals P to move the steel sheet 1 forward in a prescribed distance by a scanning circuit 4. The groups of the photoelectric elements 3 generate an output proportional to the temperature of the steel sheet on a measurement line 3a. The temperature of the steel sheet at that time is measured by a radiation temperature gauge 14 and corresponding to the temperature of the steel sheet, the charge accumulating time for the groups of photoelectric elements 3 is controlled by an AGC circuit 15. For example, even though the output signal of the groups of photoelectric elements 3 increases proportionally to the temperature of the steel sheet in the case the temperature of the steel sheet changes from 700 deg.C to 900 deg.C, almost constant output signal can be obtained by controlling the charge accumulating time for the groups of the elements 3 corresponding to the temperature of the steel sheet.