What is HMI?

HMI (Human Machine Interface) is a system that enables the exchange of information between people and machines/systems.
Examples include displays, touch panels, button operations, and voice recognition.
In recent years, there has been a growing emphasis on design and operability that is intuitive for everyone, rather than simply displaying information, and it is becoming increasingly important from the perspective of user experience.
As a result, the role of HMI is expanding to various fields, including industrial equipment, home appliances, medical equipment, and transportation infrastructure.
Furthermore, advances in AI and voice assistants have made it possible to personalize and interact with each user more naturally.
It is expected that future HMIs will evolve into forms that are even closer to humans.

Typical examples of HMI usage

1. In-vehicle systems (navigation and infotainment)
Destination setting and music control can be performed via the touchscreen or voice command, reducing the driver's eye movement and operational burden.
Recently, interfaces that utilize gesture control and haptics (tactile feedback) have been introduced to achieve both safety and comfort.
This is an area where intuitive operation is important, and it also helps prevent operational errors.

② Industrial machine operation panels
Equipment is controlled using touch panels on factory production lines, allowing workers to intuitively change settings and monitor operations, reducing operational errors and improving efficiency.
In addition, multilingual support and a graphical UI enable consistent operation regardless of the worker's level of expertise.
Low learning costs and improved work efficiency are major advantages of HMI in this field.

③ Smart home app
Lighting, air conditioning, and security can be controlled using a smartphone or voice command, greatly increasing the convenience of everyday life.
Remote control and automation functions also enable energy optimization and adaptation to lifestyle rhythms.
HMIs blend naturally into users' lives, greatly improving convenience and satisfaction.

4. Medical device displays
The patient's vital signs are displayed clearly, allowing doctors and nurses to quickly assess the situation.
Record input and setting changes can also be made by touch operation, improving on-site responsiveness and accuracy.
Even in complex medical systems, an HMI that is easy for anyone to use contributes to ensuring safety and ensuring work accuracy.

The future of HMI that connects people and machines

HMI (Human Machine Interface) plays an important role in connecting people and machines.
With intuitive and easy-to-use operability, anyone can easily operate even complex systems, leading to improved work efficiency and safety.
In recent years, HMIs have been increasingly used in a wide range of fields, including automotive systems, industrial machinery, medical equipment, and smart homes, and there are more and more situations in which they are naturally integrated into our daily lives and work.
In addition, interface formats have become more diverse, including voice, gesture, and touch operations, making it possible to respond flexibly to each user's situation.
In the future, it is expected that collaboration with AI and sensor technology will progress, evolving into a user-friendly, intelligent HMI that is better able to understand human intentions.

Infineon's HMI app

Infineon offers PSOC (Programmable System-On-Chip), an MCU that can realize HMI.
The PSOC is equipped with a capacitive sensor called Capsense.
This capacitive sensor can be used in apps for HMI applications such as touch buttons, touch sliders, and trackpads.
In particular, in-vehicle PSOCs can be used for touch buttons on car navigation systems and steering wheels.
Please see the article linked below for more details!