Sunday, January 22, 2012

Difference between HMI and MMI





The HMI (Human-Machine Interface) term is utilized generally in an environment of manufacturing. The HMI is where technology and people meet on the manufacturing floor. The HMI can be as easy as the hold on a bit or as difficult as the automated packing controls line.

HMI is the original term modification of Man-Machine Interface (MMI). The MMI short form is still often utilized even though some might declare that MMI stands for different currently. Another acronym is HCI, but is more generally applied for human computer interaction. Other idioms utilized are OIT (Operator Interface Terminal) and OIC (Operator Interface Console). The terms refer to the layer that divides a human that is operating a device from the device itself.

HMI is occasionally utilized to refer to what is enhanced explained as a direct neural interface. Though, this latter practice is showing rising application in the real-life use of medical prostheses.

This level where technology and humans meet essentially divides the human operating the device from the device itself. A excellent HMI should support the human in mapping mentally out the job requiring to be carried out with the machine. The application of the HMI itself should be intuitive or self evident.

In industry, a characteristic HMI could be a key that starts an events sequence or a process. The Windows based computer that applies software to link the human and the PLC, which begins, tops or somehow manages actions of a device.

The effectiveness of HMI is calculated by the components number. One of them is productivity and learns ability. These components are carried out collectively under the usability title, also recognized as use quality. The usability is mostly a typical of the interface of user, but is also related with the product functionalities. It tells how fine a product can be exploited for its aimed purpose by its goal users with effectiveness, satisfaction, and efficiency.

The standard of ISO 9241 states three quality components of the use applicable to the HMIs design:
1. Efficiency. Can the customers study the interface speedily? Can they perform their jobs with minimum attempt with no supervision? Does it get better the productivity or the ratio of effort?
2. Effectiveness. Does the product perform like what the users be expecting. Does it carry out the correct thing?
3. Satisfaction. Do customers convey happiness with the product and does the new product decrease stress. Are thee end customers nowadays have a more satisfying order?



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