Claims (9)
一種高爐風口監控方法，用以透過一高爐之一風口來監測該高爐之一風徑區，其中該高爐風口監控方法至少包含：利用一攝影機來透過該高爐之該風口擷取一風口影像，其中該風口影像係對應至該高爐之該風徑區，且由複數條像素列所構成，而每一像素列係由複數個像素所構成；對該風口影像進行一影像二值化處理，以獲得該風口影像之一二值化影像，其中該二值化影像包含一前景區域和一背景區域；進行一凸包(Convex Hull)計算步驟，以根據該二值化影像來計算一凸包區域；以及進行一異常偵測步驟，以根據該凸包區域來判斷是否有異常狀況發生，其中該模糊判斷步驟包含進行一模糊判斷步驟，以判斷該風口影像是否模糊，該模糊判斷步驟包含：計算該凸包區域之複數個凸包頂點所對應之複數個頂點梯度值；根據該些頂點梯度值來計算一平均對焦值；判斷該平均對焦值是否小於一預設對焦閥值，並提供一判斷結果；以及當該判斷結果為是時，判斷該風口影像模糊。
A blast furnace tuyere monitoring method for monitoring a wind tunnel area of a blast furnace through a tuyere of a blast furnace, wherein the blast furnace tuyere monitoring method at least comprises: using a camera to capture a tuyere image through the tuyere of the blast furnace, wherein The tuyere image corresponds to the wind path region of the blast furnace, and is composed of a plurality of pixel columns, and each pixel column is composed of a plurality of pixels; an image binarization process is performed on the tuyere image to obtain a binarized image of the tuyere image, wherein the binarized image includes a foreground area and a background area; performing a convex envelope (Convex Hull) calculation step to calculate a convex hull area according to the binarized image; And performing an abnormality detecting step to determine whether an abnormal condition occurs according to the convex hull area, wherein the fuzzy determining step comprises performing a fuzzy determining step to determine whether the tuyere image is blurred, and the fuzzy determining step comprises: calculating the a plurality of vertex gradient values corresponding to a plurality of convex hull vertices of the convex hull region; and calculating an average focus value according to the vertex gradient values Determining whether the average focus value is less than a preset focus threshold value, and providing a determination result; and when the determination result is YES, determining that the tuyere image is blurred.
如申請專利範圍第1項所述之高爐風口監控方法，該異常偵測步驟包含進行一浮渣判斷步驟，以判斷是否有浮渣產生，該浮渣判斷步驟包含：計算每一該些像素列之該些像素之一梯度平均值，以獲得該些像素列所對應之複數個像素列梯度參考值；以及根據該些像素列梯度參考值與一預設梯度閥值來決定一基線；判斷該基線與一風口下緣之距離是否大於一預設距離閥值，以提供一判斷結果；以及當該判斷結果為是時，判斷有浮渣產生。
The blast furnace tuyere monitoring method according to claim 1, wherein the abnormality detecting step comprises: performing a dross determining step to determine whether there is dross generation, the dross determining step comprising: calculating each of the pixel columns a gradient average of one of the pixels to obtain a plurality of pixel column gradient reference values corresponding to the pixel columns; and determining a baseline according to the pixel column gradient reference value and a preset gradient threshold; determining the Whether the distance between the baseline and the lower edge of the tuyere is greater than a predetermined distance threshold to provide a judgment result; and when the judgment result is YES, it is judged that scum is generated.
如申請專利範圍第1項所述之高爐風口監控方法，該異常偵測步驟包含進行一浮渣判斷步驟，以判斷是否有浮渣產生，該浮渣判斷步驟包含：計算該凸包區域之一凸包下緣線段的長度；判斷該凸包下緣線段的長度是否大於一預設長度閥值，以獲得一第一判斷結果；判斷該凸包下緣線段之一傾斜角是否小於一預設角度閥值，以獲得一第二判斷結果；以及當該第一判斷結果和該第二判斷結果為是時，判斷有浮渣產生。
The blast furnace tuyere monitoring method according to claim 1, wherein the abnormality detecting step comprises: performing a dross determining step to determine whether there is dross generation, the dross determining step comprising: calculating one of the convex hull regions The length of the lower edge segment of the convex hull; determining whether the length of the lower edge segment of the convex hull is greater than a predetermined length threshold to obtain a first determination result; determining whether the inclination angle of one of the lower edge segments of the convex hull is less than a preset The angle threshold is obtained to obtain a second determination result; and when the first determination result and the second determination result are YES, it is determined that scum generation occurs.
如申請專利範圍第1項所述之高爐風口監控方法，該異常偵測步驟包含一噴槍位置估測步驟，以估測該高爐
之一粉煤噴槍之位置，該噴槍位置估測步驟包含：根據該背景區域和該凸包區域來決定複數個背景區塊，其中該些背景區塊為該背景區域位在該凸包區域中的區域；計算位在該凸包區域中之複數個背景區塊的面積，以得到複數個背景區塊面積；以及根據該些背景區塊面積及一預設面積閥值來決定一噴槍區塊，其中該噴槍區塊為該些背景區塊中之一者，且該噴槍區塊之面積係大於該預設面積閥值。
The blast furnace tuyere monitoring method according to claim 1, wherein the abnormality detecting step includes a gun position estimating step to estimate the blast furnace
a position of the pulverized coal gun, the gun position estimating step includes: determining a plurality of background blocks according to the background area and the convex hull area, wherein the background blocks are in the convex hull area The area of the plurality of background blocks located in the convex hull area to obtain a plurality of background block areas; and determining a spray block block according to the background block area and a predetermined area threshold Wherein the lance block is one of the background blocks, and the area of the lance block is greater than the preset area threshold.
如申請專利範圍第1項所述之高爐風口監控方法，該異常偵測步驟包含：進行一噴槍面積估測階段，以估測該高爐之一粉煤噴槍在一歷史風口影像中所佔的面積，其中該歷史風口影像為該攝影機於該粉煤噴槍未噴煤時所擷取之影像，該噴槍面積估測階段包含：對該歷史風口影像進行該二值化處理，以獲得該歷史風口影像之一歷史二值化影像，其中該歷史二值化影像包含一歷史前景區域和一歷史背景區域；進行該凸包計算步驟，用以計算根據該歷史二值化影像來計算一歷史凸包區域，其中該歷史凸包區域為包含該歷史前景區域之最小多邊形，且由複數個歷史凸包頂點所定義；以及根據該歷史背景區域和該歷史凸包區域來決定複數個歷史背景區塊，其中該些歷史背景區塊為該歷史背景區域位在該歷史凸包區域中的區域；
計算每一該些歷史背景區塊之面積，以得到複數個歷史背景區塊面積；以及根據該些歷史背景區塊面積及該預設面積閥值來決定一歷史噴槍區塊，其中該歷史噴槍區塊為該些歷史背景區塊中之一者，且該歷史噴槍區塊之面積係大於該預設面積閥值；以及進行一噴煤判斷階段，以根據該風口影像和該歷史噴槍區塊之面積來判斷該粉煤噴槍是否正在噴煤，該噴煤判斷階段包含：根據該風口影像之該背景區域和該凸包區域來決定複數個目標背景區塊，其中該些目標背景區塊為該背景區域位在該凸包區域中的區域；計算位在該凸包區域中之複數個背景區塊的面積，以得到複數個背景區塊面積，其中該些背景區塊為該背景區域位在該凸包區域中的區域；計算每一該些背景區塊之面積，以得到複數個背景區塊面積；判斷該風口影像之該噴槍區塊的面積是否大於該歷史噴槍區塊之面積，以提供一判斷結果；以及當該判斷結果為否時，判斷該粉煤噴槍停噴。
For example, in the blast furnace tuyere monitoring method described in claim 1, the abnormality detecting step includes: performing a gun area estimation stage to estimate an area occupied by a pulverized coal lance of the blast furnace in a historical tuyere image. The image of the historical air outlet is an image captured by the camera when the pulverized coal lance is not fired. The blast area estimation stage includes: performing the binarization processing on the historical vent image to obtain the historical vent image a historical binarized image, wherein the historical binarized image comprises a historical foreground region and a historical background region; performing the convex hull calculation step for calculating a historical convex hull region according to the historical binarized image The historical convex hull area is a minimum polygon including the historical foreground area, and is defined by a plurality of historical convex hull vertices; and a plurality of historical background blocks are determined according to the historical background area and the historical convex hull area, wherein The historical background block is an area in which the historical background area is located in the historical convex hull area;
Calculating an area of each of the historical background blocks to obtain a plurality of historical background block areas; and determining a historical spray gun block according to the historical background block area and the preset area threshold, wherein the historical spray gun The block is one of the historical background blocks, and the area of the historical spray gun block is greater than the preset area threshold; and a coal injection determination stage is performed to determine the air nozzle image and the historical spray gun block The area of the pulverized coal lance is determined whether the pulverized coal lance is injecting coal. The coal blasting stage includes: determining a plurality of target background blocks according to the background area of the tuyere image and the convex hull area, wherein the target background blocks are The background area is located in the area of the convex hull area; calculating an area of the plurality of background blocks located in the convex hull area to obtain a plurality of background block areas, wherein the background blocks are the background area bits An area in the convex hull area; calculating an area of each of the background blocks to obtain a plurality of background block areas; determining whether an area of the air blast block of the tuyere image is larger than History of the lance block area, to provide a determination result; and when the determination result is NO, it is judged that the pulverized coal lance Minting.
如申請專利範圍第1項所述之高爐風口監控方法，其中該異常偵測步驟包含：計算該風口影像之該凸包區域之一最大內切圓的面積，以得到一內切圓面積；
判斷該內切圓圓面積是否大於一預設圓面積閥值，以提供第二判斷結果；以及當該判斷結果為是時，判斷該粉煤噴槍停噴。
The blast furnace tuyere monitoring method of claim 1, wherein the abnormality detecting step comprises: calculating an area of a maximum inscribed circle of the convex hull region of the tuyere image to obtain an inscribed circle area;
Determining whether the inscribed circle area is greater than a predetermined circle area threshold to provide a second determination result; and when the determination result is YES, determining that the pulverized coal lance is stopped.
如申請專利範圍第1項所述之高爐風口監控方法，其中該異常偵測步驟包含：進行一風口位置估測階段，以估測該風口在一歷史風口影像中的位置，該風口位置估測階段包含：對該歷史風口影像進行該二值化處理，以獲得該歷史風口影像之一歷史二值化影像，其中該歷史二值化影像包含一歷史前景區域和一歷史背景區域；進行該凸包計算步驟，用以計算根據該歷史二值化影像來計算一歷史凸包區域，其中該歷史凸包區域為包含該歷史前景區域之最小多邊形，且由複數個歷史凸包頂點所定義；以及根據該歷史凸包區域來決定該風口之一標準風口位置；以及進行一攝影機狀態判斷步驟，以根據該風口影像來判斷該攝影機是否處於歪斜狀態，其中該攝影機狀態判斷步驟包含：根據該風口影像之該凸包區域、該歷史風口影像之該歷史凸包區域、以及一歪斜距離閥值來判斷攝影機是否歪斜。
The blast furnace tuyere monitoring method according to claim 1, wherein the abnormality detecting step comprises: performing a tuyere position estimating stage to estimate a position of the tuyere in a historical tuyere image, the tuyere position estimating The stage includes: performing binarization processing on the historical tuyere image to obtain a historical binarized image of the historical tuyere image, wherein the historical binarized image comprises a historical foreground region and a historical background region; a packet calculation step, configured to calculate a historical convex hull region according to the historical binarized image, wherein the historical convex hull region is a minimum polygon including the historical foreground region, and is defined by a plurality of historical convex hull vertices; Determining a standard tuyere position of the tuyere according to the historical convex hull area; and performing a camera state determining step to determine whether the camera is in a skew state according to the tuyere image, wherein the camera state determining step comprises: according to the tuyere image The convex hull area, the historical convex hull area of the historical tuyere image, and a skew distance From the threshold to determine if the camera is skewed.
如申請專利範圍第1項所述之高爐風口監控方法，其中該風口影像之該凸包區域包含至少一個子區域，該異
常偵測步驟包含：計算該至少一子區域之總面積；判斷該至少一子區域之總面積是否小於一預設面積閥值，並提供一判斷結果；以及當該判斷結果為是時，判斷有大塊落料的情況產生。
The blast furnace tuyere monitoring method according to claim 1, wherein the convex hull area of the tuyere image includes at least one sub-area, and the difference
The detecting step includes: calculating a total area of the at least one sub-area; determining whether a total area of the at least one sub-area is less than a preset area threshold, and providing a determination result; and determining, when the determination result is yes, determining There are cases of large blanks.
一種電腦程式產品，經由一電腦載入執行後，可執行如申請專利範圍第1項所述之高爐風口監控方法。
A computer program product, after being loaded and executed by a computer, can perform the blast furnace tuyere monitoring method as described in claim 1 of the patent application.