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What is a Human-Machine Interface (HMI)? How to use a Human-Machine Interface?

2026-04-06 04:49:41 · · #1

Human Machine Interaction (HMI), also known as a user interface, is the medium and dialogue interface for the transmission and exchange of information between humans and computers, and is an important component of computer systems. It serves as the medium for interaction and information exchange between the system and the user, realizing the conversion between the internal form of information and a form that humans can understand. HMIs exist in any field involving human-computer information exchange.

The human-machine interface refers to the area or interface where humans and machines come into contact or influence each other in terms of information exchange and function. This interface refers to the human-machine interface, information exchange, functional contact or mutual influence, and includes both hard and soft contact between humans and machines. This interface includes not only direct contact between points, lines and surfaces, but also the space for long-distance information transmission and control.

The human-machine interface is a central link in human-machine systems. It is primarily studied and addressed by safety ergonomics, a branch of safety engineering. Specific solutions and measures are researched through safety equipment engineering, safety management engineering, and safety systems engineering. Safety ergonomics achieves the conversion between the internal form of information and a form acceptable to humans.

Human-machine interfaces (HMIs) exist in any field involving human-machine information exchange. Widely used in industry and commerce, they can be broadly categorized into "input" and "output." Input refers to the human operation of machinery or equipment, such as handles, switches, doors, issuing commands, or maintenance. Output refers to notifications from the machinery or equipment, such as faults, warnings, and operating instructions. A good HMI helps users operate machinery more easily, correctly, and quickly, maximizing its efficiency and extending its lifespan. However, the HMI commonly referred to in the market often refers more narrowly to the user-friendly interface of software.

How to use the human-computer interface

Define the monitoring task requirements and select a suitable HMI product; edit the "project file" on the PC using screen configuration software; test and save the edited "project file"; connect the PC to the HMI hardware and download the "project file" to the HMI; connect the HMI and industrial controllers (such as PLCs, instruments, etc.) to achieve human-machine interaction.

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