Research Article

Designing a Human Machine Interface for Quality Assurance in Car Manufacturing: An Attempt to Address the “Functionality versus User Experience Contradiction” in Professional Production Environments

Table 8

Device score model: for all criteria (lower is better).

Software designSmartphoneData glassesCurrent PDA

Overall grade1,31,34,4

CriterionWeight.GradeGradeGrade

Corporate design20%1,01,02,7
User-adaption20%1,01,04,8
HMI assistant20%1,41,44,5
Dialog design20%2,32,34,8
Multimedia content20%1,01,05,4

ErgonomicsSmartphoneData glassesCurrent PDA

Overall grade1,73,62,3

CriterionWeight.GradeGradeGrade

hands-free20%3,51,03,5
weight10%1,36,03,1
size15%1,06,03,5
interaction distance5%3,53,54,8
interaction safety25%1,01,01,0
Health25%1,06,01,0

PerformanceSmartphoneData glassesCurrent PDA

Overall grade1,75,52,2

CriterionWeight.GradeGradeGrade

Type I33%1,06,03,9
Type II50%1,96,01,0
User error rate0%---
Motivation17%2,33,02,5

Technical acceptanceSmartphoneData glassesCurrent PDA

Overall grade1,73,22,8

CriterionWeight.GradeGradeGrade

Useful14%1,03,33,1
User friendly14%1,62,53,1
Self-explaining14%2,93,33,5
Representation14%1,63,12,5
Health care14%2,04,32,7
Input quality14%1,62,72,0
First impression14%1,23,52,5
Technology skills0%1,61,01,2

User ExperienceSmartphoneData glassesCurrent PDA

Overall grade1,83,13,5

CriterionWeight.GradeGradeGrade

HQ identity17%1,62,92,9
HQ stimulation17%2,62,64,4
Pragmatic quality17%1,33,03,0
Attractivity17%1,33,53,8
Ergonomics17%2,03,03,6
Worker grade17%1,83,83,3