HMI

11 flashcards · Other · by samuel-howell

  1. Human machine interface (HMI)

    - point of exchange between human/worker and machine - ex. control panel, visual display unit, monitor, cell phone

  2. Closed loop system

    - feedback and interaction with displays and controls - decision making - based on what you see, experience, and receive as feedback

  3. Automation

    - the electrical or mechanical accomplishment of work - anything that helps you do what you need to do

  4. Advantages of automation

    1) reduce cost - wages 2) improve efficiency - reduce time 3) increase system productivity - no down time 4) improve safety - not as affected by human error in certain circumstances 5) reduce workload - physical or cognitive

  5. Disadvantages of automation

    1) complexity - becomes more complex with use of tool, induced surprises, more parts = increased failure potential 2) undertrust - perceived unreliability, false alarms 3) overtrust - perceived reliability, complacency, misses

  6. Implementation of Automation

    1) use good human factors 2) inform operator 3) training 4) introduce gradually 5) make flexible

  7. Implementation of Automation: 1) use good human factors

    - consider displays, controls, design

  8. Implementation of Automation: 2) Inform operator

    - purpose, when - process status, so that people anticipate it when they come into work

  9. Implementation of Automation: 3) Training

    - updates/changes - provide periods of non-automation/manual operation, so production can continue even if its slow - how display information is determined, how the answer is arrived at, is whats on the screen correct, know processes and what they're doing

  10. Implementation of Automation: 4) Introduce gradually

    - helps acceptance of new thing and increases it over time - management policy: assistance vs. replacement (for helping and safety, or reducing cost?)

  11. Implementation of Automation: 5) Make flexible

    - use automation or not? - degree of automation - choice of customization - override - manual vs. autonomous