Guide To Siemens HMI Software

By Marci Glover


Human-machine interface (HMI) refers to the layer that separates a human being who is using a computer from the machine itself. An example of a human-machine interface is the hardware and Siemens HMI software of a computer, which makes it possible for a single operator to control a machine. The user interface comprises the flow of information to support decision-making, through visual messages - generally provided by a screen or monitor; sound messages - speakers, headphones; control actions - keyboards, buttons, switches.

Human-machine interaction (HMI) is a parent field which deals with similar issues but generalizes the interaction between humans and the machine. An important aspect in this field involves the usability of software and hardware. The standard EN ISO 9241 (especially Part 110 and 11) defines which requirements are placed on the usability of software or hardware.

Human-computer interaction has differences with the human factor (accounted in ergonomics and usability), it focuses more on users working with computers rather than with other types of equipment. HCI also focuses on the implementation of software and hardware to support the interaction. Thus, the human factor is a broader concept. HCI can be characterized as the human factor - although some experts are trying to divide the data area.

The term human-machine interface is sometimes used to refer to what is best described as direct neural interface, or some imaginary technology can make a direct connection between the human nervous system and a computer. The user interface is to be understood as an intermediary between man and machine, and may include both the hardware and software side of a machine.

Some techniques which attempt to make the interaction more natural include automatic speech recognition or gestures used to send information to a computer. TTS allows you to send audio signal understandable by humans. Data gloves offer a more direct option to the mouse interaction. The HMIs try to immerse users in a virtual reality or augment reality. Interactive tables provide a strong coupling between the direct manipulation by users on a device and feedback.

The following steps are usually applicable in iterative development: develop a user interface, perform testing, and analyzing the results. Iterative development steps are repeated until a practical, user-friendly interface is created. Variety of techniques outlining design technique of human-computer interaction began appearing during the development of this field in the 1980s. Most development methodologies have evolved from models of interaction of users, developers and technical systems. Newer techniques such as cognitive processes of users are treated as predictable and quantifiable.

The main task of human-computer interaction is to improve the quality of interaction, making computers easier to use and responsive to user needs. Long-term goal of human-computer interaction is to develop a system that will reduce the barrier between the human cognitive model and understanding of computer assigned tasks. HMI specialists usually deal with the practical application of development methodologies to real global problems. Their work often revolves around the development of graphic and web interfaces.

From an organic point of view, it is possible to distinguish three types of HMI: The acquisition interfaces: buttons, knobs, joysticks, computer keyboard, MIDI keyboard, remote control, motion sensor, microphone with voice recognition. The combined interfaces: touch screens, multi-touch control feedback. Games and virtual worlds such as Second Life, Everquest or Wolfenstein, where several players or users enjoy overall immersion in a common landscape, provide insight into new relationships that can be implemented through realistic interfaces.




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