Automatic Grading Technology and Application of Baijiu Based on Segmented Characteristics and IIoT

Table 3

Comparison of artificial grading of mild aromatic Chinese Baijiu with automatic grading data.

Baijiu category	The type of process	Cumulative flow of liquor grading in stages (L)				Characteristics of alcohol content in the section of liquor grading (°)
		The first stage of the Baijiu accumulates traffic	Automatic grading value	Absolute error	Relative error %	The second stage of the Baijiu accumulates flow	Automatic liquor grading value	Absolute error	Relative error %	Third-stage alcohol slope	Automatic grading value	Absolute error	Relative error %	Fourth-stage alcohol	Automatic grading value	Absolute error	Relative error %
Mild aromatic Chinese Baijiu	I	3.9	3.68	0.22	5.64	−3.2	−3.4	0.2	6.25	20.4	22.16	1.76	8.63	0.83	0.91	0.08	9.64
	J	4.2	3.99	0.21	5.00	−3.4	−3.1	0.3	8.82	21.3	22.43	1.13	5.31	2.1	1.96	0.14	6.67
	K	4.1	4.22	0.12	2.93	−2.6	−2.8	0.2	7.69	20.1	21.51	1.41	7.01	0.8	0.74	0.06	7.50
	L	3.8	3.97	0.17	4.47	−2.9	−3.1	0.2	6.90	19.8	21.68	1.88	9.49	1.45	1.32	0.13	8.97
	M	3.5	3.78	0.28	8.00	−3.3	−3.1	0.2	6.06	20.8	20.12	0.68	3.27	1.21	1.09	0.12	9.92
	N	4.4	4.19	0.21	4.77	−3.3	−3.5	0.2	6.06	21.4	22.54	1.14	5.33	1.08	1.13	0.05	4.63
	O	4.2	4.09	0.11	2.62	−3.2	−3.3	0.1	3.12	20.1	21.93	1.83	9.10	1.33	1.43	0.10	7.52
	P	4.0	3.87	0.13	3.25	−2.8	−2.9	0.1	3.57	21.2	22.32	1.12	5.28	1.61	1.58	0.03	1.86
AVG	—	4.01	3.97	0.04	0.97	−3.09	−3.15	0.06	2.02	20.64	21.84	1.20	5.81	1.30	1.27	0.03	2.40
SE	—	0.26	0.18	—	—	0.27	0.22	—	—	0.58	0.73	—	—	0.40	0.36	—	—
SD	—	0.09	0.06	—	—	0.09	0.08	—	—	0.21	0.26	—	—	0.14	0.13	—	—