Information Technology Reference
In-Depth Information
the road and other immediate elements, as well as the profile of the driver. The
switch towards another activity comes into effect at a deliberate demand from the
system: sudden breakdown, incoming telephone call, road safety message, etc.
Work which we carried out in the 1990s [DAV 91], [LAB 92], [LAB 93] is still
current at least from a conceptual point of view. Technologies need to be adjusted,
but the principle, which considers that it is a matter of implementing an adaptive
human-machine interface, is based on three important models, which are the
functioning model, which describes the system possibilities in the form of user
tasks, the situational model, which describes the immediate state of the global
system (state of the vehicle, incoming events such as external calls) and the user
model, his profile expressing his abilities, his specificities. The choice of human-
machine interaction for the selected task, as well as the elements of interaction and
constituent presentation, depend on these different models and the way in which we
integrate the corresponding computer in the e-Truck or the e-Bus.
6.7.2.
Wearable HMI in mobility situations
When the driver is not at the wheel of the bus or the truck, but is occupied with
loading or unloading goods, or managing a breakdown, incident or accident, he
needs a different interaction than the one which is fixed in his cab, used for driving.
It must be mobile to enable him to act in the trailer, or outside, depending on the
need. Tasks which are at least partially different in relation to those mentioned for
driving are necessary. In fact, a partial overlap between certain tasks similar to
driving and those used in mobility is normal. Nonetheless, new, more contextualized
tasks must be proposed. These are linked to the cargo, either to the functioning or
malfunctioning of the truck. In both cases, contextualization is essential.
Indeed, the merchandise to be delivered must be dealt with contextually. It is the
same for a breakdown situation or malfunctioning of the truck [BES], [DAV 06]. To
help the driver diagnose the defect or failure, it is necessary to collect adequate
information and to analyze it and correctly aggregate it. The computer accessory
which has the appropriate peripherals [MAS 06], the RFID label reader in particular
can help in both cases, as much during the contextual management of merchandise
as during the contextualization of breakdown situations. This contextualization can
go as far as the presentation in augmented reality of instructions, actions and
interventions to be carried out on the equipment (Figure 6.4).
