公开(公告)号：JPH075112A

公开(公告)日：1995-01-10

申请号：JP4245594

申请日：1994-03-14

Applicant: TORAY INDUSTRIES

Inventor： TAKEDA SHUZO ,  NAGAYAMA TAKASHI ,  KAWADA ISAMU

IPC: G01B11/24 ,  A61M1/18 ,  B01D63/02 ,  G01B11/245 ,  G01N21/88 ,  G01N21/93 ,  G01N21/952

Abstract: PURPOSE:To allow easy and highly accurate detection of abnormal hollow fiber in the resin agent layer of a hollow fiber module. CONSTITUTION:A resin agent layer C1 is irradiated, on the side face thereof, with light emitted from a light emitting ring section 202 and the light, reflected on an abnormal hollow fiber toward the end face of the resin agent layer C1, forms a high quantity of light part thereon. A quantity of light measuring unit 3 measures the quantity of light on the end face of the resin agent layer C1 and a binarizing section 403 separates a part having luminance higher than a predetermined threshold. When an deciding section 503 makes a decision that the total area of high luminance part exceeds a reference value, an operating section 7 delivers a command for discriminating the inspected hollow fiber module M. A display section 6 displays the decision results. This equipment allows highly accurate automatic detection of the presence of abnormal hollow fiber.

公开(公告)号：JPH06281591A

公开(公告)日：1994-10-07

申请号：JP9541293

申请日：1993-03-29

Applicant: TORAY INDUSTRIES

Inventor： TAKEDA SHUZO ,  NAGAYAMA TAKASHI ,  KAWADA ISAMU

IPC: G01B11/30 ,  B01D63/02 ,  G01N21/88 ,  G01N21/93

Abstract: PURPOSE:To detect the impermeable defect in a hollow fiber module simply with the accuracy. CONSTITUTION:A supporting device 1 supports a hollow fiber module. A ring-shaped light emitting part 202A is arranged on the approximately same axis as the module at a position, which is separated from the edge of the hollow fiber module by a specified distance, and has the outer diameter larger than the outer diameter of the module. A first light measuring device 3A measures the amount of light for every subdivided region of the edge of the above described hollow fiber module at a position facing the edge of the hollow fiber module, into which the positive reflected light of the light emitted from the above described light emitting part 202A at the above described edge is not cast. A binary coding part 403 adds an arbitrary offset amount to the measured light amount at an arbitrary one selected point of the edge of the hollow yarn module or the average measured light amount at two or more selected points, operates the threshold value and binary-codes the measured light amount at the edge based on the threhold value. A operation judging part 502 compares the total area on one side, which is fractionized by the binary coding with a reference value, and discriminates whether the hollow fiber module is good product or not. These parts are provided.

公开(公告)号：JPH06273126A

公开(公告)日：1994-09-30

申请号：JP8567593

申请日：1993-03-19

Applicant: TORAY INDUSTRIES

Inventor： TAKEDA SHUZO ,  NAGAYAMA TAKASHI ,  KAWADA ISAMU

IPC: G01B11/24

Abstract: PURPOSE:To detect a failure resulting from the separation of a container and a resin layer in a hollow fiber module uniformly with high accuracy. CONSTITUTION:A slit-like light is irradiated by a light radiating device 2 to a minute area of an interface K between a container A and a resin layer C1. A reflecting light reflected at a separated part in the minute area is measured by a light amount measuring device 3. A separation signal corresponding to the separated area is formed by a separation signal forming part 4 on the basis of the measuring result at the device 3. Whether the hollow fiber module is good or bad is detected in a detecting device 5 based on a plurality of separation signals related to the minute area. In this manner, the separating state between the container A and the resin layer C1 is quantitatively detected by an optical means, whereby the failure resulting from the separation can be automatically and positively detected without irregularities.

公开(公告)号：JPH075113A

公开(公告)日：1995-01-10

申请号：JP5354194

申请日：1994-03-24

Applicant: TORAY INDUSTRIES

Inventor： TAKEDA SHUZO ,  NAGAYAMA TAKASHI ,  KAWADA ISAMU

IPC: G01B11/24 ,  A61M1/18 ,  B01D63/02 ,  G01N21/88 ,  G01N21/952

Abstract: PURPOSE:To allow highly accurate detection of a depression DP, e.g. a mark of bubble, made in the end face of resin agent layer in a hollow fiber module. CONSTITUTION:A light projection unit 2 projects a slit light onto a slit-like part set on the end face C11 of a resin agent layer C1 and the reflected light impinges on a photometric unit 3 which measures the luminance within a window set in the incident region corresponding to the slit-like part for each pixel. The intensity of slit light is set 1-4 times as high as the intensity of light at a moment when the luminance of at least a part of pixel in the window begins to saturate. The luminance of each pixel is binarized at a binarizing section 403 thus detecting a depression DP in the end face C11 caused by a bubble, for example. This equipment allows high accurate detection of a depression in the end face of resin agent layer using an optical means.