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基于水传热和红外热成像的煤矸识别方法

程刚 陈杰 潘泽烨 魏溢凡 陈森森

程刚,陈杰,潘泽烨,等. 基于水传热和红外热成像的煤矸识别方法[J]. 工矿自动化,2024,50(1):66-71, 137.  doi: 10.13272/j.issn.1671-251x.2023050056
引用本文: 程刚,陈杰,潘泽烨,等. 基于水传热和红外热成像的煤矸识别方法[J]. 工矿自动化,2024,50(1):66-71, 137.  doi: 10.13272/j.issn.1671-251x.2023050056
CHENG Gang, CHEN Jie, PAN Zeye, et al. Coal gangue recognition method based on water heat transfer and infrared thermal imaging[J]. Journal of Mine Automation,2024,50(1):66-71, 137.  doi: 10.13272/j.issn.1671-251x.2023050056
Citation: CHENG Gang, CHEN Jie, PAN Zeye, et al. Coal gangue recognition method based on water heat transfer and infrared thermal imaging[J]. Journal of Mine Automation,2024,50(1):66-71, 137.  doi: 10.13272/j.issn.1671-251x.2023050056

基于水传热和红外热成像的煤矸识别方法

doi: 10.13272/j.issn.1671-251x.2023050056
基金项目: 安徽省高校协同创新项目(GXXT-2021-076);煤炭安全精准开采国家地方联合工程研究中心研究项目(EC2021010)。
详细信息
    作者简介:

    程刚(1986—),男,安徽桐城人,副教授,博士,研究方向为煤矿智能开采,E-mail:chgmech@mail.ustc.edu.cn

    通讯作者:

    陈杰(1997—),男,安徽铜陵人,硕士研究生,研究方向为矿山机电工程,E-mail:ChenJie7197@163.com

  • 中图分类号: TD67

Coal gangue recognition method based on water heat transfer and infrared thermal imaging

  • 摘要: 基于可见光图像的煤矸识别方法准确率不高、识别速度慢;基于高能射线透射的煤矸识别方法具有很大辐射导致较少应用。红外热成像具有穿透性强、不受光线影响等优点,但煤和矸石的表面温度在室温下相对接近,导致煤和矸石在红外热图像中没有明显差异,难以获得较好的识别效果。针对上述问题,提出了一种基于水传热和红外热成像的煤矸识别方法。在不同水温(18,21,24,27,30 ℃)条件下进行煤和矸石红外热成像实验,通过煤和矸石红外热图像和温度变化之间的差异来区分煤和矸石。实验结果表明:不同水温下煤和矸石红外热图像不同,当水温低于环境温度时,煤和矸石红外热图像之间的差异较大;在相同水温条件下,煤和矸石红外热图像之间的差异随着时间增加逐渐增大;煤和矸石表面温度变化均随水温升高和时间增加呈增大趋势,但矸石表面温度变化大于煤表面温度变化;当水温为18 ℃、时间为180 s时,煤和矸石红外热图像之间差异和温差均达到最大。这说明低温的水可作为一种传热介质,更有利于使煤和矸石之间产生较大的温差,从而实现煤和矸石红外热图像准确、快速识别。

     

  • 图  1  红外热成像原理

    Figure  1.  Principle of infrared thermal imaging

    图  2  煤矸红外热成像实验系统

    Figure  2.  Experimental system of coal and gangue infrared thermal imaging

    图  3  不同水温下不同时刻的煤和矸石红外热图像

    Figure  3.  Infrared thermal images of coal and gangue under different water temperatures and time

    图  4  不同水温下煤和矸石表面温度变化曲线

    Figure  4.  Surface temperature variation curves of coal and gangue under different water temperatures

    图  5  煤和矸石表面温度变化与水温和时间的关系

    Figure  5.  Surface temperature variation of coal and gangue in relation to water temperature and time

    图  6  不同水温下煤和矸石表面温度变化的均值和方差

    Figure  6.  Mean and variance of surface temperature variation of coal and gangue under different water temperatures

    图  7  不同水温下煤和矸石表面温差

    Figure  7.  Surface temperature difference between coal and gangue under different water temperatures

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出版历程
  • 收稿日期:  2023-05-17
  • 修回日期:  2024-01-18
  • 网络出版日期:  2024-01-31

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