Research Article
Design and Research of Smart Neck Helmets Based on the KANO-QFD Model and TRIZ Theory
Table 3
Various demand sensitivity factors.
| Level 1 heading | Secondary heading | Numbering | A (charming type) | O (expected) | M (required type) | I (no difference) | SI | |DSI| | KANO attributes |
| Safety | With smart neck protection function | A1 | 102 | 212 | 193 | 91 | 0.525 | 0.677 | Necessary requirements | Incorporate airbag | A2 | 162 | 196 | 172 | 68 | 0.599 | 0.615 | Expected demand | Intelligent recognition of obstacles | A3 | 157 | 215 | 187 | 41 | 0.622 | 0.672 | Expected demand | Improve impact resistance | A4 | 155 | 214 | 142 | 87 | 0.617 | 0.595 | Expected demand |
| Comfort | The cushion material is more comfortable | B1 | 143 | 150 | 178 | 126 | 0.490 | 0.548 | Basic needs | The overall mass is lighter | B2 | 162 | 98 | 225 | 113 | 0.435 | 0.540 | Basic needs | Intelligently adapt to different head circumferences | B3 | 158 | 140 | 192 | 108 | 0.498 | 0.555 | Essential foundation | Easy to carry | B4 | 94 | 177 | 195 | 132 | 0.453 | 0.622 | Necessary requirements |
| Aesthetics | Modeling satisfaction after wearing a helmet | C1 | 101 | 232 | 75 | 190 | 0.557 | 0.513 | Expected demand | The shape meets the aesthetics | C2 | 136 | 147 | 154 | 161 | 0.473 | 0.503 | Undifferentiated demand | The color is aesthetic | C3 | 132 | 157 | 143 | 166 | 0.483 | 0.502 | Undifferentiated demand | Mellow | C4 | 133 | 161 | 190 | 114 | 0.492 | 0.587 | Necessary requirements | Tough | C5 | 113 | 156 | 210 | 119 | 0.450 | 0.612 | Necessary requirements |
| Feature | Multifunctional integration of Bluetooth, turn signal, etc. | D1 | 97 | 229 | 166 | 106 | 0.545 | 0.66 | Expected demand | In rainy days, automatically clean the rainwater on the lens | D2 | 113 | 192 | 207 | 86 | 0.510 | 0.667 | Necessary requirements | Combination of mobile phone APP, real-time view of driving recorder | D3 | 166 | 169 | 231 | 32 | 0.560 | 0.669 | Necessary requirements | Voice navigation | D4 | 115 | 187 | 221 | 75 | 0.505 | 0.648 | Necessary requirements | Reduce wind noise | D5 | 166 | 185 | 192 | 55 | 0.587 | 0.630 | Necessary requirements |
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