- The relationship and difference between the touch screen and HMI display
- Common faults of HMI display and their solutions
- What are the possibilities and characteristics of HMI display in the future?
The relationship and difference between the touch screen and HMI display
The touch screen is HMI, but the touch screen is only one kind of man-machine interface. HMI also includes a non-touch screen, as well as an upper computer, text display, and so on. PLC connection is always a function of HMI and can realize man-machine interaction operation interface is HMI display.
The HMI display interface is a platform for the human operation of PLC. The platform provides an interface between the program and human, is the medium and dialogue interface between human and computer to transfer and exchange information, is an important part of the computer system. It realizes the transformation between the internal form of information and the form that humans can accept. There is a man-machine interface in every field that participates in man-machine information exchange.
The touch screen is a kind of PLC man-machine interface, people can adjust parameters or monitor parameters by touching the button on the screen. But the man-machine interface is not necessarily all touch screen, some are installed on the operation panel with a number of buttons, and people through the button to monitor the operation of PLC. The screen is just for viewing parameters, and there is no touch function.
The touch screen is HMI display, but the touch screen is only one kind of man-machine interface. HMI display also includes a non-touch screen, as well as upper computer, text display and so on. PLC connection is always a function of the man-machine interface, can realize man-machine interaction operation interface is man-machine interface.
Strictly speaking, “touch screen” is a kind of input device with touch operation function of HMI display, in the factory with touch input function of HMI display is commonly called “touch screen”.
What are the possibilities of HMI display in the future?
Man-machine interface (touch screen all-in-one machine) can be generally understood as the interactive experience between man and machine. It is the medium and dialogue interface for information transmission and exchange between man and machine, and an important part of computer system. Among them, industrial man-machine interface (HMI) as intelligent operation control display equipment, plays an important role in industrial automation applications. The main functions of HMI display include: data input and display; Or real-time information display of system running state; Setting touch controls on the HMI controls the HMI as an operation panel; Alarm processing and printing; In addition, the new generation of industrial man-machine interface also has intelligent control functions such as simple programming, input data processing, data recording and formulation. So, what are the characteristics of the development of HMI display?
What are the characteristics of the development of HMI display:
Human interaction with computers becomes closer to that with the real world, which opens up new possibilities to reduce the cognitive burden of human interaction and make more use of natural skills acquired through human evolution and experience.
The Man-machine interface will be more and more multi-mode, with high bandwidth characteristics. Therefore, there will be a great demand for group user interfaces that adapt to the rules of people’s social organization and behavior.
The next-generation method of HMI display design is an interactive integration method. It will use a lot of speech, natural language, and high-level graphics, as well as other interactive media, as well as three-dimensional images to guide and explain interactions and tasks vividly. In short, the future development of human-machine interfaces poses many challenges for researchers and designers.
HMI man-machine Interface, HMI is the abbreviation of Human Machine Interface, “man-machine interface”, also known as man-machine interface, is the medium of interaction and information exchange. We use HMI in the industry to control and monitor equipment.
HMI display is connected to a programmable controller (PLC), frequency converter, DC governor, instrument, and other industrial control equipment, the use of a display screen to display, through the input unit (such as touch screen, keyboard, mouse, etc.) to write working parameters or input operation command, the realization of human and machine information interaction digital equipment. This report statistics the touch screen Human Machine Interface (HMI) market.
Usually used to connect programmable logic controllers, special controllers, frequency converters,s, and other industrial automation control products, the use of display units (such as liquid crystal modules) displays real-time information such as the running state of machines and equipment; The man-machine interface can use input units (such as touch screen, keyboard, etc.) to write working parameters or input operation commands, so as to realize the information interaction between people and equipment, is the standard configuration of all kinds of industrial automation production equipment. Mainly used in logistics equipment, medical equipment, industrial robots, food machinery, clothing machinery, textile machinery, rail transit equipment, packaging machinery, plastic machinery, electronic manufacturing equipment, printing machinery, and other fields.
Popular science knowledge of HMI display: Common faults and solutions
Man-machine interface (touch screen all-in-one machine), also known as the user interface or user interface, is the medium and dialogue interface between humans and computers for information transmission and exchange, is an important part of the computer system. It is the medium of interaction and information exchange between the system and users and realizes the transformation between the internal form of information and the acceptable form of human beings. Man-machine interface exists in every field involved in man-machine information exchange.
Man-machine interface exists in all fields involving man-machine information exchange. At present, human-machine interface (HMI) is widely used in various fields, but it often encounters many problems in the process of using HMI display. In view of these situations, this paper summarizes the common faults of man-machine interface in daily work and their treatment methods.
1, there is no response to the man-machine interface, no response to touching any part.
Solution: In this case, first check whether the connection interface is loose, and then check whether the serial port and interrupt number conflict. If it is caused by a conflict, adjust resources to avoid conflicts.
Secondly, check whether there is a crack on the surface of the man-machine interface, timely replacement. In addition, it is necessary to check whether there is dirt on the surface of the man-machine interface. If there is, remove it with a soft cloth. Check whether the indicator on the control box works properly. When normal, the indicator blinks green.
If all the above parts are normal, you can first replace the control box, then replace the touch screen, and finally replace the host machine to check the man-machine interface.
2, the man-machine interface is normal but the computer can not operate. One man-machine interface, after testing, everything is normal, but after connecting to the host, the computer can not run.
Deal with: There are two reasons for this. First, the human-machine interface driver version may be too low, need to install the latest driver. Secondly, it may be that the host begins to load the man-machine interface driver before the man-machine interface control card received the operation signal, so only need to turn off the power again after restarting the computer.
3. The precision of touch control decreases. A surface acoustic man-machine interface, which cannot be operated properly by touching the part of the display screen with fingers.
Treatment: There are two reasons for this phenomenon. The first possibility is that the reflective fringe of the sound barrier is slightly damaged and, if this occurs, cannot be fully repaired. The second possibility is that after using the sonic interface for a period of time, the reflective stripes around the screen are covered with dust, which can be wiped with a soft dry cloth, and then shut down, restart the computer, and recalibrate.