Modern day human machine interface systems are now controlled and managed without the use of the bulky computers, multiple peripherals and closed protected workspaces. Click here to read more.
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Understanding Human Machine Interface – The Basics (Contd....)
1. Blogpost 4| Comfiletech.com
UNDERSTANDING HUMAN MACHINE INTERFACE – THE BASICS (Contd…..)
In our last post on the topic of human machine interface, let us now look at certain technical aspects of the system and how it actually works.
The real intelligence quotient behind an HMI system is the controller or operator. This person sends a request for an action through a graphical push button available in the HMI system. This command then initiates a set of functions that have been pre-programmed into the machinery, allowing the process to move forward. The same system is followed for monitoring the industrial process as well. There are sensors placed in and around the factory floor which send a signal to the mainframe on the successful completion of a particular step in the process. An alarm system is also in place to warn the controller in case of any aberration.
There are many kinds of HMIs available in the market these days for use in industrial settings. There can be a particular touch screen panel designed specifically to work in tandem with a particular factory’s processes. There are many standardized equipments and devices available as well that can be installed in multiple settings. The HMI is also the user's front end to a SCADA system's controls and databases. Essentially SCADA is the top level of control of a network of operators controlling a large, complex process. There are also the human machine interface software and adapters that can be installed on any regular PC to make it capable of controlling an industrial process. The adapter card can be inserted to the system to connect it with the specific protocol of the control system being used in a factory. These software packages are available on a run-time license basis from various developers in the market.
These are the basics you need to understand about industrial HMIs.