Design and Research of Smart Neck Helmets Based on the KANO-QFD Model and TRIZ Theory

Table 5

First-level objective matrix.

Demand number	Weight w	Neck guard design	Sensor application	Effectively identify obstacles	Multifunctional integration	Operational settings	Automatically clean rainwater	Noise reduction degree	Helmet body material	Human-computer interaction	Buffer layer material	Rescue tool
A3	0.0662	0	7	9	0	0	0	0	0	0	0	0
A4	0.0656	0	0	5	0	0	0	0	9	0	7	0
A2	0.0637	9	9	0	0	0	0	0	0	0	0	0
A1	0.0626	9	0	0	0	0	0	0	0	0	0	0
D5	0.0624	0	0	0	0	0	0	9	0	0	0	0
D3	0.0619	0	7	0	0	0	0	0	0	9	0	9
D2	0.0617	0	0	0	7	3	7	0	0	0	0	0
D1	0.0610	0	0	0	9	7	0	0	0	0	0	9
D4	0.0599	0	0	0	9	7	0	0	0	5	0	5
C1	0.0592	0	0	0	0	0	0	0	0	0	0	0
B4	0.0575	0	0	0	0	0	0	0	5	0	0	0
C5	0.0566	0	0	0	0	0	0	0	0	0	0	0
C4	0.0543	0	0	0	0	0	0	0	0	0	0	0
B3	0.0530	0	0	0	0	0	0	0	0	5	0	0
B1	0.0521	0	0	0	0	0	0	0	0	0	5	0
C3	0.0514	0	0	0	0	0	0	0	0	0	0	0
C2	0.0503	0	0	0	0	0	0	0	0	0	0	0
B2	0.0499	0	0	0	0	0	0	0	3	0	3	0
Importance of engineering measures Hj		1.14	1.47	0.92	1.52	1.03	0.43	0.56	0.88	1.12	0.72	1.41