AUTOMOTIVE
UX design innovations optimise HMI operations in special vehicles
Robert Davies, Marketing Manager EAO Ltd.
H
uman, Machine Interface (HMI) components and systems are
increasingly being found in special vehicles, where they are often selected for their ruggedness, ergonomic design and increasingly, for the wide range of confi gurations available. The example of a modern-day refuse collection truck (illustrated) is an opportunity to highlight the most important design considerations in selecting push-button controls and keypads. Obviously, given the nature of the vehicle’s work, the HMI components must be robust and reliable in both outdoor and indoor operation, but of central importance are the challenges presented by weather, temperature fl uctuations, high-pressure
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cleaning equipment and sometimes aggressive cleaning agents. A high IP front protection rating is very important. When operating a refuse collection truck, the focus one way or another must be on safety. People are a critical consideration. Companies producing heavy duty or special vehicles in Europe for on-road or off-road use have recognised that they need a defi ned safety strategy for interaction between the subsystems, the electronic/ electrical components and the operators(s). In the event of an error, the system must respond appropriately to safeguard workers and bystanders by quickly reverting to a state of safety, for example by alerting the control operator and/or by bringing heavy
JUNE 2024 | ELECTRONICS FOR ENGINEERS
machinery to a swift halt. It is therefore vitally important that manufacturers apply all relevant standards.
Safety, standards and approvals Designers of HMIs for heavy duty and special purpose vehicles have long relied on the technical and legal compliance knowledge and experience available from controls and systems specialists such as EAO, however suppliers are increasingly being asked to take ergonomic UX design principles into account when recommending control devices for a particular application. Illumination and feedback options have become critical factors when selecting the most appropriate HMI products for a control
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