Figure 4.

In-vehicle health monitoring: state-of-the-art. We code the nodes in columns Location, Sensor, Biosignal, and Purpose with L[n], S[n], B[n], and P[n], respectively, and all interconnections with their supporting nodes. For instance, S2—L3 represents the reference where the authors use a capacitive electrode (S2) embedded in the bucket seat (L3) (Table 2).