Dust Concentration Measurement for Sprayed Concrete Suspended Dust for Tunnel Construction Work by using Digital Camera

这是一个事实，在隧道工程师从模拟相机的时代，白色标记出现在闪光灯的照片在隧道建设期间。这是因为悬浮的尘埃像雪一样被闪光的米氏散射反射。利用这一现象，研制了一种简易的数码相机粉尘浓度测量仪。该测量系统基于神经网络系统。该神经网络系统研究了数码相机闪光灯的白度与数码灰尘指示器值之间的关系。结果发现，从数码相机闪光灯图像测量的简单粉尘浓度与数字粉尘指示器的值具有良好的相关性。

It was a fact among the tunnel engineers from the era of analog cameras that the white marks appear in the flashed photograph during the tunnel construction. This reason is that suspended dusts reflect like a snow by Mie scattering of flash light. By using this phenomenon, the simple dust concentration measurement by using digital camera was developed. This measurement system was based on the neural network system. This neural network system studies the relationship the value of the digital dust indicator and the whiteness of the flashed digital camera. As a result, it found that simple dust concentration measurement from the digital camera flash image has a good relationship the value of digital dust indicator.