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

Table 2

Primary screening of user needs.

Level 1 needs	Secondary demand (A)	Level 3 requirements (B)
Quality needs of helmet users	Security A	A1 has a smart neck protection function
		A2 combined with airbag
		A3 intelligent recognition of obstacles
		A4 improves impact resistance
	Comfort B	B1 cushion material is more comfortable
		B2 is lighter overall
		B3 intelligently adapts to different head circumferences
		B4 is easy to carry
	Aesthetics C	C1 styling satisfaction after wearing a helmet
		C2 shape conforms to aesthetics
		C3 color meets aesthetics
		C4 rounded
		C5 tough
	Functional D	D1 Bluetooth and other multimedia function integration
		D2 when it rains, automatically clean the rainwater on the lens
		D3 mobile phone APP combination, real-time view of the driving recorder
		D4 voice navigation
		D5 reduces wind noise
		D6 turn signal reminder