Member of the ISA Committee. To be useful, it needs to be used — and that involves an operator. The ISA group understood this, dedicating considerable space in the standard explaining how the makeup of HMIs should be designed to accommodate the operator. I strongly believe one of the best things we can do in life is teach others how to accomplish a task. Teaching is a noble profession, perhaps the most noble around. Imagine how tough life would be if we had to learn and re-learn things over and over, constantly starting from scratch.
The Big Three: HMI Philosophy, Style Guide & Toolkit
Common HMI Terms & Acronyms
HMI goes beyond just graphical design and the way information is presented to the operator. HMI engineering and configuration tasks, for example, can greatly add to project cost and complexity. As a true lifecycle-based standard, ISA defines how to best use technologies through all phases of the HMI lifecycle, from design through implementation, operations, and maintenance. Some examples of lifecycle-based standards in the process industries include the ISA Many end user organizations face large migration and modernization projects as well as an increasingly diverse installed base of systems. ISA provides guiding principles for HMI design that are independent of vendor platforms, including human factors engineering guidelines, standards, best practices, functional requirements, and experience. ISA covers all hardware and software aspects of the HMI in the design phase, including identifying requirements and initial designs for all HMI components. In addition to user, task, and functional requirements, ISA can help users in their overall HMI system design, console design, and display design. For end users, this results in more effective requirements documents, better HMI system design specification, console design documents, and display design documentation. ISA implementation phase efforts cover the detailed work to actually build the HMI in the target platform and hardware.
The purpose of having an automated process is to enhance process operations based on safety, performance, process improvements, availability, repeatability, and other relevant factors. Human-machine interfaces HMIs , the primary means by which users interact with a process, provide the potential and opportunity both to greatly facilitate and enhance operations or to otherwise confuse users and degrade operations. It defines the terminology and models to develop an HMI and the work processes recommended to effectively maintain the HMI throughout the HMI life cycle, including all general concepts until its decommissioning, applying a practical and management approach. The target audiences include end users, designers, developers, and implementers of HMI systems.