What Is HMI :
HMI is stand for human machine interface is the main part of industrial automation. the HMI allows human to interface and control the machine and industrial automation system. simple word say that HMI connects human to the machines. in simple term HMI is touchscreen & display there operator see the machine status ,communication status ,alarm , historical alarms, temperature graph and more .
HMI And Scada Difference:
| Scada | HMI |
| It is software | It is software & hardware |
| it work low temperature | It works high & low temperature |
| Screen ration is large | Screen ration is low |
| Designed for supervisory personnel | Designed for local operators |
| More complex and more expensive | less complex and less expensive |
| Local & remote control | Lan control |
Types of HMI:
1)Keypad HMI : This HMI operate only buttons 2)Touch Screen HMI : Touch screen HMI is operator friendly. 3)Keypad + HMI : This HMI is operated in button and touch screen. 4)Mobile HMI: It is software based interface in mobile application. 5)Web-Based HMI: This HMI accessible in web browser.
Where HMI Is Used:
- Industrial Automation Cell
- Industrial Automation (manufacturing, oil/gas, power)
- Healthcare (medical devices, patient monitoring)
- Aerospace (aircraft control systems, navigation)
- Automotive (vehicle control systems, diagnostics)
- Building Automation (HVAC, lighting, security)
- Energy Management (power grid control)
- Transportation (rail, maritime, aviation)
The HMI Benefits:
- The HMI improved machine efficiency
- The HMI increased human operator safety
- The HMI allow operator better decision-making
- The HMI is cost savings
- The HMI provide real-time monitoring
- The HMI have communication interface
- The HMI increased Flexibility.
HMI Designs Considerations:
- Design a HMI is user friendly for operator.
- Use Graphical Layout.
- Add pop up screen and side screen for attractive design .
- Add machine safety related screen ex: Alarm Screen all interfaced device status monitor screen add communication monitor screen.
- Add real time machine animation.
HMI Manufactures & Software’s :
| Siemens | Tia portal |
| Mitsubishi Electric | GX Works |
| Rockwell Automation | FactoryTalk View |
| ABB System | 800xA |
| Schneider Electric | Vijeo Citect |
| Inductive Automation | Ignition |
Why is HMI Important?
- The HMI monitor a real time data such as temperature, vibration and speed .
- The operator modify the machine parameters such as process parameters , motor speed
- The operator receive a real time alarm and alerts
- The operator make a important decision using a graph and historical data