Particle size measurement by near-infrared light extinction method using database technologies

Table 1. Simulation results of unimodal distribution
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Table 1. Simulation results of unimodal distribution
设定值$ \left( {\overline D ,k} \right) $ 反演值$ \left( {\overline D ,k} \right) $ R
（8.155,9.349）（8.16,9.28） 0.0076
（12.734,3.352）（12.9,3.24） 0.0412

Table 2. Simulation results of bimodal distribution

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Table 2. Simulation results of bimodal distribution

设定值$ \left(\overline{{D}_{1}},{k}_{1},n，\overline{{D}_{2}},{k}_{2}\right) $	反演值$ \left(\overline{{D}_{1}},{k}_{1},n，\overline{{D}_{2}},{k}_{2}\right) $	RRMSE
（3.358,11.71,0.5,10.242,11.452）	（3.36,11.65,0.5,10.24,11.50）	0.0021
（3.164,11.52,0.7,10.195,11.853）	（3.16,11.85,0.7,10.14,11.75）	0.0638

Table 3. Simulation results after adding noise

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Table 3. Simulation results after adding noise

设定值	随机噪声	反演值	R
（ 8.155, 9.349）	1%	（ 8.199, 9.242）	0.0351
	3%	（ 8.24, 9.484）	0.0646
（3.358,11.71,0.5,10.242,11.452）	1%	（3.3880,11.3100,0.5000,10.1440,11.2650）	0.0407
	3%	（3.3420,11.6500,0.5000,10.3900,11.7950）	0.0612

Table 4. Experimental results of unimodal distribution of standard particles
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Table 4. Experimental results of unimodal distribution of standard particles
样本编号 D50标称值/${\text{μm} }$ D50实测值/${\text{μm} }$ 相对误差
GBW120134 3.44 3.718 0.0808
GBW120024 9.40 9.661 0.0278
GBW120041 14.62 15.68 0.0725

Table 5. Experimental results of bimodal distribution of standard particles
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Table 5. Experimental results of bimodal distribution of standard particles
标称值 D50/μm 实测值 D50/μm 相对误差
（3.44,9.40）（3.201,10.180）（0.0695,0.0830）

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Hongqin WANG, Zexi ZHENG, Huazhong XIANG, Xiangpeng LI. Particle size measurement by near-infrared light extinction method using database technologies[J]. Optical Instruments, 2023, 45(6): 1

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