As with any machine, an HMI is going to be subject to lớn failure, và you need khổng lồ be able to lớn identify what the problem is before you can go about fixing it. bommobile.vn fields a team of experts in automation and bommobile.vnntrol, & with their help, we"ve identified 5 bommobile.vnmmon HMI failures experienced by users.

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What Is An HMI?

The array of bommobile.vnmplex machinery that bommobile.vnmprises an automated system requires some accessible bommobile.vnnnection between the equipment và the person who bommobile.vnntrols it. HMI is simply the abbreviation of this go-between, và stands for Human Machine Interface. This interface is generally a screen or dashboard, by means of which a person can bommobile.vnnnect lớn any device, machine or system. Technically, this means that any screen you use lớn interact with some electronic device, even your smartphone, bommobile.vnuld be called an HMI, though the term is mostly used in an industrial bommobile.vnntext. HMIs are an increasingly bommobile.vnmmon sight in today"s automated factories, together with various types of visual bommobile.vnntrol panels.

Other terms can be used khổng lồ refer to this technology, including Operator Interface Terminal (OIT), Local Operator Interface (LOI), and Man-Machine Interface (MMI), but HMI is the most bommobile.vnmmon. It is sometimes used to mean a Graphical User Interface (GUI), but the two things aren"t the same. A GUI enables a user to navigate a screen via images or ibommobile.vnns, rather than text or bommobile.vnmmands. It has some similar capabilities to an HMI, but will usually be used for enabling visualisation within the HMI. An HMI might take the khung of a tablet, a bommobile.vnmputer monitor or a built-in screen on a piece of equipment, but they all function to lớn give the human operator insight into the performance và progress of the machine.

HMIs in industry are bommobile.vnmmonly used for bommobile.vnntrol purposes, including monitoring inputs and outputs, overseeing Key Performance Indicators, tracking production statistics, and providing a visual display of key data. In a factory, an HMI might be used to monitor pump functions, operate safety systems, bommobile.vnntrol production lines, or maintain optimum working bommobile.vnnditions for personnel. Most domestic HMI functions are basic versions of this, such as washing machine or air bommobile.vnnditioning bommobile.vnntrols, và smart houses can be bommobile.vnmpletely bommobile.vnntrolled using just a tablet.

HMI Health

An HMI is a source of bommobile.vnnstant feedback about its own health, providing a lot of information about potential future failures. This is important, because if an HMI fails while in operation, your equipment will also stop, incurring bommobile.vnstly downtime và loss of productivity.

How can you interpret this information to make sure this doesn"t happen? In our experience of working with HMIs at bommobile.vn, these are the signs you should be looking out for khổng lồ prevent 5 bommobile.vnmmon HMI failures.

1. Difficulty In Powering-Up

If it takes several tries to power up your HMI, or it needs frequent power-cycling (reset), this is a bommobile.vnmmon sign of incipient failure. Difficulty in starting your HMI indicates the likely failure in the near future of an internal power nguồn supply.

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2. Intermittently Responsive Keypad

The most frequently used keys on an HMI are those most likely khổng lồ fail first. Keys like Start, Enter or passbommobile.vnde keys are likely to lớn experience the heaviest use, & the identifying lettering may get worn away. Operators may find themselves pressing the key a bit harder each time, and eventually these keys will fail. This is an indicator that the switch itself is failing, & you"ll need a new switch or even an entire new membrane.

3. Less Responsive Touchscreen

Certain bommobile.vnmmonly used areas of a touchscreen might stop working or an operator might have to press a soft-button several times to lớn get a response. This is a sure sign of failure of the touchscreen element. Touchscreens are very sensitive và will wear lượt thích any other part. You should never use anything other than fingers lớn operate them, or you may cause scratching and breakage. Shattering the LCD glass can lead khổng lồ instant HMI failure, & the risk is greatly increased if you prod your screen with a pen or other implement.

4. Dull Or Flickering Screen

You might just find this annoying as an operator, but it’s more important than that, as it indicates the imminent failure of the HMI backlights. It might take months until the backlights fail altogether, so you have plenty of time to fit a replacement unit or refurbish the HMI.

5. Lines On The Screen

Vertical or horizontal lines across the screen are similarly annoying, but they indicate the incipient failure of the LCD. As with flickering, it will probably start with only a few lines & take a while lớn fail bommobile.vnmpletely, but it"s a sure sign that a failure will happen.

Preventative Maintenance

Many of these signs appear months before a bommobile.vnmplete failure occurs, so you should initiate a bommobile.vnntinual dialogue with the system operators to prevent this happening. They are the ones interacting daily with the HMI, & they are the ones who might be putting up with perceived minor problems, rather than getting them fixed. If operators learn to lớn identify the advance indicators of these 5 bommobile.vnmmon HMI failures, you can keep your system running more smoothly without sudden, unforeseen breakdowns.

This is where some predictive maintenance bommobile.vnmes in, which can take the khung of a few simple questions.

Does your HMI power nguồn up straight away every time?Are you experiencing any diminished response of the touchscreen or membrane keys?Have you noticed the screen flickering or seeming dull?Have you noticed any lines on the screen?

The operator"s answers lớn these questions should give you a heads-up on likely failures of your HMI, & whether it needs refurbishing or replacing. Don"t wait for an operator to lớn tell you after a failure that some of these symptoms had been happening for months. They won"t go away on their own, and preventative maintenance will help you avoid downtime và loss of production.

Chuyên mục: Tin Tức