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MATE

MATE. Module 13 - Computer Control: The Human Machine Interface Development of the display screens and its necessary human factors By Jeremy R. Hertzberg, David Cummins & Carey Williamson. Development of the display screens. Situational Awareness Why use display screens

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  1. MATE

  2. Module 13 - Computer Control: The Human Machine Interface Development of the display screens and its necessary human factors By Jeremy R. Hertzberg, David Cummins & Carey Williamson

  3. Development of the display screens • Situational Awareness • Why use display screens • Types of display screens • The display screens changing role • The Good, the Bad, and the Ugly

  4. Situational Awareness • One of the ways industry categorizes the Machine-Human interaction is called Situational Awareness (SA). • Situational awareness is divided into 3 categories • SA1- perception • SA2- interpretation • SA3- anticipation

  5. SA1- perception http://www.easyvectors.com/browse/other/internal-organs-medical-diagram-clip-art

  6. SA2- interpretation http://www.easyvectors.com/browse/other/internal-organs-medical-diagram-clip-art

  7. SA3- anticipation http://www.easyvectors.com/browse/other/internal-organs-medical-diagram-clip-art

  8. Why use display screens • Reduce hardware and development time • Flexible layouts • Minimization of tether diameter

  9. Reduce hardware and development time • Let us consider the two cases for the addition of one sensor, for example a pressure transducer. • Case one, independent of computer system. • Case two, integrated in to μ controller (Arduino, PIC, etc…) system.

  10. Case one, Independent of μ controller • First give it a clean power source and apply an instrumentation amplifier to stabilize the signal. • The second step will be to amplify or encode it so that it is resistant to noise while it travels up the tether. For example one could turn the signal in to light. • The third step is to give it an appropriate path up the tether, twisted pair, shielded, coax, fiber optic. • Fourth, decode the signal. • Next provide a display device • Finally test and calibrate to known good samples.

  11. Case two, Integrated in to μ controller • First give it a clean power source and apply an instrumentation amplifier to stabilize the signal. • Second perform an analog to digital (AtoD) conversion and feed it to the ROVs computer for inclusion in its upstream communication. • Next on the surface display the information • Finally test and calibrate to known good samples.

  12. Reduction of hardware • Every connection you can reduce, every wire you can remove, every device you can retire: • Can increase the reliability of the system. • Can reducing the cost and time of development

  13. Flexible layouts • Typical hardware panel layouts will include: • CAD drawing, showing cut outs and stenciling of switches and displays (LEDs, lights, meters, etc…) • Having sheet mental cut to CAD drawings specifications • Sheet metal painted and stenciled. • If you need to change something, it’s simple Cad, Cut and Stencil. You could get the final product, with a little extra money, in a week or two.

  14. Flexible layouts • Typical Software panel layouts will include: • Place the meter, indicator, virtual switch on the screen. • Maybe move it or resize it if you want. • Maybe you change it for a different display or graph • If you need to make a change, you can get it in about 2 to 3 hundred milliseconds, no extra charge.

  15. Minimization of tether • Every dedicated tether wire you can remove means • One less pin on each connector • Reduces price on connectors • Reduces fail rate • X less kg of weight • X less volume of tether to handle • 1 less tether wire to go bad • 1 less tether wire to pay for • Reduction in overall diameter of tether, easier to handle.

  16. Types of display screens • Display only screen • Touch screen • Multi function display (MFD) • Heads up Display (HUD) • On screen display (OSD)

  17. Display only screen • Yea, well I suspect you've seen them.

  18. Touch screen

  19. Classic http://old.littlespringsdesign.com/blog/2009/12/07/use-the-right-analogy-and-use-your-analogies-right/

  20. Multi function display (MFD) http://old.littlespringsdesign.com/blog/2009/12/07/use-the-right-analogy-and-use-your-analogies-right/

  21. Heads up Display (HUD)On screen display (OSD) http://www.simscape.fr/Mirage4000/ http://gdb.voanews.eu/AD3DDBA6-4988-4A75-85CD-6FAB72D57070_mw800_s.jpg

  22. The display screens changing role • Who is using it? For what purpose? • System development • Trouble shooting • Mission specific task • Piloting

  23. Definition • P&ID • Piping and Instrumentation Drawings http://www.sustainableplant.com/2011/11/the-ultimate-human-machine-interface/

  24. The Good, the Bad and the Ugly http://www.makinggoodsoftware.com/2011/07/31/agile-the-good-the-bad-and-the-ugly/

  25. Characteristics of Poor HMIs • P&ID representation • Presentation of raw data as numbers (temperatures, pressures, etc.) • No trends • Flashing/spinning graphics • Bright colors, 3-D shadows • Color coding of piping and vessel contents • Measurement units in large, bright text • Lots of crossing lines • Alarm related colors for non-alarm related elements • Inconsistent colors

  26. Characteristics of Effective HMIs • Depiction of process status and values as information, not numbers • Layout consistent with operators model of the process (not a P&ID) • Key Performance Indicators as trends • No gratuitous information • Gray backgrounds, low contrast • Very limited use of color (for alarming) • Consistent visual and color coding • Gray process lines • Measurement units in low contrast lettering, if used at all

  27. http://www.sustainableplant.com/2011/11/the-ultimate-human-machine-interface/http://www.sustainableplant.com/2011/11/the-ultimate-human-machine-interface/

  28. http://www.sustainableplant.com/2011/11/the-ultimate-human-machine-interface/http://www.sustainableplant.com/2011/11/the-ultimate-human-machine-interface/

  29. http://www.sustainableplant.com/2011/11/the-ultimate-human-machine-interface/http://www.sustainableplant.com/2011/11/the-ultimate-human-machine-interface/

  30. Great site • http://www.sustainableplant.com/2011/11/the-ultimate-human-machine-interface/ http://www.sustainableplant.com/2011/11/the-ultimate-human-machine-interface/

  31. http://www.amazon.com/gp/customer-media/product-gallery/B002NUD40S/ref=cm_ciu_pdp_images_0?ie=UTF8&index=0&isremote=0http://www.amazon.com/gp/customer-media/product-gallery/B002NUD40S/ref=cm_ciu_pdp_images_0?ie=UTF8&index=0&isremote=0

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