HIGHLY PRECISE TEMPERATURE MEASUREMENT METHOD OF HEATING ELEMENT TRAVELING CONTINUOUSLY

• Main Authors: USUI HIROYUKI, MITSUI KENJI
• Format: Patent
• Language: English; Japanese
• Published: 11.10.2021
• Subjects: COLORIMETRY; MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT; MEASURING; PHYSICS; RADIATION PYROMETRY; TESTING

To establish a highly precise temperature measurement method of a heating element traveling continuously by suppressing a decrease in measurement precision in noncontact measurement of temperature distribution of a heating element moved continuously and a decrease in precision because of discontinuity of a measurement image caused by a temperature change in a measurement line.SOLUTION: A camera in which a 2-wavelength filter is installed in a mosaic pattern in each pixel of a CCD or a C-MOS sensor is prepared. A shield is installed in an upper part of a measurement object part of a fluid heating element such that a heating element is exposed in a rectangular strip form with a direction perpendicular to a flow as a long side. The positions of respective strip-shaped images obtained by continuously photographing the exposed part by the camera are recognized from the shape of an unheated material, a plurality of strip images are processed so as to obtain a composited image as a continuous image or a single image, and the image is processed by a two-color temperature method so as to obtain a temperature distribution, thus establishing a precise measurement method.SELECTED DRAWING: Figure 2 【課題】連続的に移動させる発熱体の温度分布の非接触計測における計測精度低下や計測ラインにおける速度変化に起因する計測画像の不連続性による精度低下を抑えることにより連続的に移動する発熱体の高精度温度計測方法を確立する【解決手段】CCDまたはC-MOSセンサーの各画素に2波長のフィルターをモザイク状に設置したカメラを用意する。流動発熱体の計測対象部分の上部に、流れと直角方向を長辺とする矩形短冊状に発熱体が露出するように遮光物を設置する。この露出部分を前記カメラで連続撮影した各短冊状画像を非加熱材料の形状からその位置を認識し、複数の短冊画像を処理して合成したものを連続または単一画像として得、これを二色温度法で処理して温度分布を得ることで高精度の計測方法を確立できる【選択図】図２