Overview of Status of Analysis, Design, Fabrication, Tests, etc.
1. Using optical light source and scanning left to right
Ultrasonic distance sensors & Proximity switches
Individual component analysis being done on the two types of options
2. Camera and image processing concept
External computing processor required -- size, weight, time of processing unclear
Iphone app could be a starting stone before purchasing any other cameras and screens -- must confirm with the sponsor about the usage of a mobile device
3. Measuring on the side with a magnifier and a line that would allow a digital readout on screen
Going back to the basic idea without the dangers of optical light source and its unclear eye safety issues
Design without laser or prism mechanism
Air bubble accelerometer level bar to make sure that there is no horizontal tilt when used
Accomplishments from Previous Week
Research being done about various types of sensors
New sponsor meeting scheduled for Sunday @ 10 am
Gathering of information and ideas to discuss and eliminate at the meeting
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Establish clear understanding of the pros and cons of each design idea and choose the strongest concept by this weekend
Every member is expected to sketch out their own ideas and bring to team/sponsor meetings
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Research on ultrasonic distance sensors
References: http://www.amazon.com/gp/aw/d/B004IYL3SM/ref=mw_dp_mpd/180-0243212-0042617?pd=1
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
- Check wavelength spectrum; match up the light source and scanner
- Try the risk reduction test with ambient light covered
- Convert the risk reduction hardware test graph to “distance”
- Shape of hole - switch to a slot to improve accuracy of scanner
- Two groups of members: (1) Hardware; (2) Research
- Research group: What types of light is safe for the eye? (visible, non-visible?)
- Laser precision: How to test?
- Types of sensors: Array? Spec sheet?
- Look at scanners as examples
- Individual component analysis (scanners, optical source, eye safety, linear slider)
- Error: from 1 mm to 0.25 mm
- Sources of current error
Comments from Other Students in the Class (indicate date of comments and if via email or in person)
Using a camera and image processing such as an iphone app.
Risks and Areas of Concern
Current Challenges
1. Optical light source: still researching on ultrasonic distance and proximity sensors to fully understand their functions and to decide whether or not they work with our designs
2. Camera: image processor, screen, two dots that will allow scaling -- unable to mark on patient
3. Magnifier: unsure if this design can deliver the accuracy of 250 microns (0.25 mm)
Resources or Information Required but not Available
More literature search is in order for image processing and proximity sensors.
Schedule
Sponsor meeting on Sunday at 10 am
Bring sketches and concepts in drawing
Updated Gantt chart.
Budget (list amount spent and amount remaining)
Same as last week
Progress on Report and Webpage
Individual component analysis updated