Teresa Tang and Malek Necibi
PROBLEM STATEMENT
2
Many Americans with disabilities are physically incapable of opening doors in their home, which is inconvenient and decreases their independence.
VALIDATION
Proving that opening doors is a problem for the disabled
3
HEALTH & SAFETY VALIDATION
People with disabilities may be physically incapable of opening doors in their home.
Quote
“About 19.9 million people had difficulty lifting and grasping [objects such as doorknobs]” (US Census).
4
ECONOMIC VALIDATION
Many people with disabilities need a helper [1]. Paying for such a helper, on top of bills, is expensive [2].
[1]
Of the 9.4 million adults who struggled with daily activities... “5 million needed the assistance of others to perform such an activity” (US Census).
5
[2]
Paraprofessionals: $34,799 annually
Caregivers: $26,269 annually
(“Salary”)
“Salary: Paraprofessional.” Glassdoor, www.glassdoor.com/Salaries/paraprofessional-salary-SRCH_KO0,16.htm.
US Census Bureau Public Information Office. “Nearly 1 in 5 People Have a Disability in the U.S., Census Bureau Reports - Miscellaneous - Newsroom - U.S. Census Bureau.” U.S. Trade with Haiti, 19 May 2016, www.census.gov /newsroom/releases/archives/miscellaneous/cb12-134.html.
TECHNICAL PROBLEMS VALIDATION
Quote
"When it comes to opening doors or windows [arthritis victims lack the necessary strength, making it] harder to live independently...” (“Arthritis”).
People with disabilities such as arthritis complain about a lack of independence because they need help with basic tasks.
6
“Arthritis.” Healthtalk.org Youthhealthtalk.org, www.healthtalk.org/young-peoples-experiences/arthritis/getting-around-home-adaptations-and-daily-living.
JUSTIFICATION
Proving that a cheaper, easy-install door opener is necessary
7
ECONOMIC JUSTIFICATION
Quote
Prices of existing automatic door openers...
(Williams)
On average, disability remodeling costs $9,000 (“Cost”). Paying for additional automatic door openers on every door would cost thousands of more dollars.
8
“Cost to Remodel to Adapt for a Disability - Estimates and Prices at Fixr.” Fixr.com, Fixr Blog, 31 Aug. 2017, www.fixr.com/costs/disability-remodeling.
“FAAC Electric Door Openers.” FAACGateSystems.com, www.faacgatesystems.com/electric-door-openers.html?___SID=U&ajaxcatalog=true&dir=asc&limit=10&order=position.
Williams, Steven. “Open Sesame Residential Door system.” Message to Teresa Tang. September 9, 2018. Email.
TECHNICAL PROBLEMS JUSTIFICATION
Quote
[A Harvard report] “finds that more than 7 million renter households have a member with a disability" (White).
Many people with disabilities live in renter homes and cannot permanently modify their doors.
9
White, Gillian B. “Nowhere to Go: The Housing Crisis Facing Americans With Disabilities.” The Atlantic, Atlantic Media Company, 16 Dec. 2015, www.the atlantic.com/business/archive/2015/12/renting-with-a-disability/420555/.
EXPERT OPINION
“If automatic doors could be made efficiently and in a cost-effective manner…it would make [the lives of people with disabilities] easier…it would add to the resale value of the home because it is nice to push a button and have a door open when coming home from the grocery store...”
— Travis Martin, motorcycle accident survivor
10
Martin, Travis. “Opening Doors for the Paralyzed.” Message to Teresa Tang. September 11, 2018. Email.
Existing Products
11
$
Prime-Line KC10HD Safety Spring Door Closer
(“Prime-Line”)
Automatic Door Closer With Hydraulic Hinge
(“BEST SELLER”)
12
“BEST SELLER Automatic Door Closer With Hydraulic Hinge - Slowly Closes and Shuts Door - Great Self Closing Door For Residential/Commercial Use -.” Amazon, Amazon, www.amazon.com/SELLER -Automatic-Closer-Hydraulic-Hinge/dp/B00YB4Y3JK/
“Prime-Line KC10HD Safety Spring Door Closer - Easy to Install to... › Customer Reviews.” Amazon, Amazon, www.amazon.com/product-reviews/B003DQGEMQ/
Private Door Assistant
$$
Private-Door Solo
(“Selecting”)
(“Selecting”)
13
Open Sesame Doors
$$$
FAAC Door Openers
(“FAAC”)
(“Williams”)
14
“FAAC Electric Door Openers.” FAACGateSystems.com, www.faacgatesystems.com/electric-door-openers.html
Williams, Steven. “Open Sesame Residential Door system.” Message to Teresa Tang. September 9, 2018. Email.
Existing Patents
15
DOOR UNLOCKING PATENTS
16
Gorman, and Kim Ramsey. “Wireless Residential Door Unlatch System - GORMAN; KIM RAMSEY.” FPO IP Research & Communities, 17 Mar. 1998,
www.freepatentsonline.com/5729198.html.
Gotanda, and Motohiro. “Door Unlocking Device - GOTANDA; MOTOHIRO.” FPO IP Research & Communities, 14 July 1987, www.freepatentsonline.com/4679834.html.
*Could not find patents that directly relate to automatic door opening/closing
Solution Brainstorming
17
DESIGN SPECIFICATIONS
18
CONSTRAINTS
19
Solution Types
20
*All solutions replace the original door with a new door that doesn’t require screws
DECISION MATRIX
21
Scoring Key: 1 = worse… 5 = best
TOP 3 SOLUTIONS
22
Gallery Walk Results
23
GALLERY WALK RESULTS
Preferred Solutions
Track Door - 53
Folding Door - 19
Roll-Up Door - 36
24
PUBLIC REASONING
GALLERY WALK CONCLUSION
Quote
PH
25
Final Decision: Track Door
Hollow-Core (decreases weight)
Vertical “Supporting” Rod (tension rod)
Horizontal “Stabilizing” Clamp/Rod
Pneumatic piston to open
All enclosed in aesthetic box
Replaces the original door
SUBSYSTEMS
26
Vertical Support System
27
TENSION ROD TESTING
28
The tension rod is unstable and quickly shortens due to gravity
TENSION ROD TESTING CONCLUSION
29
Test Door
30
BUILDING A TEST DOOR (CAD)
31
Sides and Front
Structure (2 x 4’s)
Structure + Plywood
BUILDING A TEST DOOR
32
CAD Model
Structure (2 x 4’s)
Hung Door
Door Opener System
33
DESIGN INSPIRATION
34
Pneumatic Door Opener: https://www.youtube.com/watch?v=fGtNwEe0D1s
COMPARING DOOR OPENER TYPES
35
Linear Actuator
Pneumatics
Motors
Pros
Cons
Pros
Cons
Pros
Cons
Pros
Pros
Pros
Cons
Cons
Cons
We chose this
Version #1
36
RACK AND PINION ARM
Components
37
VERSION #1 CAD MODEL (unfinished)
38
Version #2
39
ENCASED MOTOR ARM
Components
40
Version #3
41
Linear Actuator Arm
Components
42
Linear Actuator Arm Cont.
43
Mini Test Door
Purpose:
To test our linear actuator mechanism without having to stand on a chair
44
Mounted Linear Actuator
45
Calculations
OnShape Drawing
46
[
?
Electronics
Circuit to convert 5V Signal to 12V required by Linear Actuator
47
2 - 5V Inputs
2 - 12V Outputs
Programming
Wait for front/back PIRs to sense motion
Motion detected at PIR
Once motion is detected, start timer
Open door until limit switch is hit
Wait for PIR inside the door to sense motion
If no motion detected within 10 seconds of PIR activation, close door
48
[
Program Testing
49
1 - PIR7ACTIVATEDDoor opening
2 - Waiting for person to pass through (repeated multiple times)
3 - Person has passed through!
4a - Time expired?
4b - Start time is: 31791 (milliseconds)
5a - Time has expired
5b - 41791 (milliseconds)
6 - Person gone
7 - Door closing
8 - Door closed
VIDEO
FINAL
50
COMPARISON OF GANTT CHARTS
PROJECTED
REAL
*REAL GANTT CHART JUMPS AROUND MORE
51
Any questi ns?
52
EXTRA JUSTIFICATION (Technical Problems)
Quote
"No automatic door button, no option for me to open them on my own and not risk injuring my recovering knee."
(Schreiber).
Even public urgent care places may lack automatic door options. If there is a public lack of door openers, then residential homes are even more likely to lack necessary disability accommodations.
53
Schreiber, Molly. “When Doors Are Closed to Me as a Person With a Physical Disability.”The Mighty, 15 Aug. 2016, themighty.com/2016/08/dealing-with-inaccessible-doors-as-a-person-with-a-disability/.
EXTRA JUSTIFICATION (Technical Problems)
Quote
"After about two weeks oil came out of the unit on the door and floor. The door would then slam very hard possibly hurting someone” (“BEST SELLER”).
—User Hyperion
Even though cheap door products (ex. Hydraulic door closer) exist, they are unreliable.
54
“BEST SELLER Automatic Door Closer With Hydraulic Hinge - Slowly Closes and Shuts Door - Great Self Closing Door For Residential/ Commercial Use -.” Amazon, Amazon, www.amazon.com/SELLER -Automatic-Closer-Hydraulic-Hinge/dp/B00YB4Y3JK/
WORKS CITED
55
“Arthritis.” Healthtalk.org Youthhealthtalk.org, www.healthtalk.org/young-peoples-experiences/arthritis/getting-around-home-adaptations-and-daily-living.
“BEST SELLER Automatic Door Closer With Hydraulic Hinge - Slowly Closes and Shuts Door - Great Self Closing Door For Residential/Commercial Use -.” Amazon, Amazon, www.amazon.com/SELLER-Automatic-Closer-Hydraulic-Hinge/dp/B00YB4Y3JK/ref=asc_df_B00YB4Y3JK/?tag=hyprod-20&linkCode=df0&hvadid=193166724913&hvpos=1o5&hvnetw=g&hvrand=15091821087687101389&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9060034&hvtargid=pla-370354310877&psc=1.
“Cost to Remodel to Adapt for a Disability - Estimates and Prices at Fixr.” Fixr.com, Fixr Blog, 31 Aug. 2017, www.fixr.com/costs/disability-remodeling.
“FAAC Electric Door Openers.” FAACGateSystems.com, www.faacgatesystems.com/electric-door-openers.html?___SID=U&ajaxcatalog=true&dir=asc&limit=10&order=position.
Gorman, and Kim Ramsey. “Wireless Residential Door Unlatch System - GORMAN; KIM RAMSEY.” FPO IP Research & Communities, 17 Mar. 1998,
www.freepatentsonline.com/5729198.html.
Gotanda, and Motohiro. “Door Unlocking Device - GOTANDA; MOTOHIRO.” FPO IP Research & Communities, 14 July 1987,
Martin, Travis. “Opening Doors for the Paralyzed.” Message to Teresa Tang. September 11, 2018. Email.
“Prime-Line KC10HD Safety Spring Door Closer - Easy to Install to... › Customer Reviews.” Amazon, Amazon, www.amazon.com/Prime-Line-KC10HD-Safety-Spring-Closer/product-reviews/B003DQGEMQ/ref=cm_cr_getr_d_paging_btm_2?ie=UTF8&reviewerType=all_reviews&filterByStar=one_star&pageNumber=2.
“Selecting a Private Door.” Private-Door, www.privatedoor.net/new-page-91.
“Salary: Paraprofessional.” Glassdoor, www.glassdoor.com/Salaries/paraprofessional-salary-SRCH_KO0,16.htm.
Schreiber, Molly. “When Doors Are Closed to Me as a Person With a Physical Disability.”The Mighty, 15 Aug. 2016, themighty.com/2016/08/dealing-with-inaccessible-doors-as-a-person-with-a-disability/.
US Census Bureau Public Information Office. “Nearly 1 in 5 People Have a Disability in the U.S., Census Bureau Reports - Miscellaneous - Newsroom - U.S. Census Bureau.” U.S. Trade with Haiti, 19 May 2016, www.census.gov/newsroom/releases/archives/miscellaneous/cb12-134.html.
White, Gillian B. “Nowhere to Go: The Housing Crisis Facing Americans With Disabilities.” The Atlantic, Atlantic Media Company, 16 Dec. 2015, www.theatlantic.com/business/archive/2015/12/renting-with-a-disability/420555/.
Williams, Steven. “Open Sesame Residential Door system.” Message to Teresa Tang. September 9, 2018. Email.
56
THE END
PROTOTYPE COST: $149.98
58
PROTOTYPE COST
THEORETICAL TOTAL COST: $13,692.04
59
THEORETICAL COSTS