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Published byMarian Sullivan Modified over 9 years ago
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EASELECTRIC Team 4 Adam Frank Jackie Jon
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Introduction NSF Program: Expanding world of disabled artists Growing demand for adjustable easels Disabilities involving limited dexterity, limited mobility, visual acuity trouble, cerebral palsy, moderate cognitive impairment. Increasing demand for a remotely adjustable easel with many ranges of motion
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Introduction General Requirements Electrically adjustable Easily controlled motion Light weight, easy to store Clamp to tables of different sizes and shapes Movable in three planes as well as a controllable tilt operation
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Introduction Safety Features: Automatic mechanism to stop movement of easel beyond its maximal excursion Master switch to turn device on/off Powered by a wall switch Slow movements so there is sufficient time to control device due to delayed responsive skills of the artist No exposed cords or wires
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Market Analysis Patents 5,494,251 – “Artist’s Easel” Allows for vertical motion Has a wheeled Base 5,725,192 – “Adjustable Artist’s Easel” Allows for rotational adjustment, but no motion in other planes 5,590,864 – “Easel for Handicapped Artists” Provides only a tilting function
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Market Analysis Commercially Available “The Dreamer” Allows for vertical, horizontal and tilt motions. Accessible only to artists who must paint with their mouths. Not applicable to artists with other disabilities.
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Market Analysis How is Easelectric Unique? Provides easy to use controls Electronically controlled motion in 4 planes Safe and Reliable
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Flow Diagram of Operations
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Design Material Aluminum Stock provided by Independent Welding Inc. Advantages: Lightweight Sturdy Weldable, easy to fabricate Square tubing will conceal wiring and moving actuators throughout the easel
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Design Easel Components: Base Clamping arms Major circuit parts Carriage Responsible for all motion Actuators Tracking System
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Design- Side Views of Easel
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Actuators Duff Norton Electromechanical Actuators Specs: 100 lb. Load Capacity (300 lb. Static Load) 12VDC Motor with polarity reversal 6” and 8” Stroke lengths Speed: 1 in/sec (slows with increasing load) Aluminum Construction to match easel frame Special Offer: 4 for $400.00
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Tracking System Require strong tracks resistant to vibration or unwanted movement when painting
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Electrical System Client requested the use of joysticks to control motion of easel Use of Relays to accommodate low voltage/current joystick and higher voltage/current actuator
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Electrical System Circuit requires safety mechanisms including: Master On/Off Switch Fuse to protect from unsafe current draw Limit Switch to constrain range of motion Possibility of attachments such as canvas light
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Optimal Design Budget Costs ItemUnit PriceQuantityS&HTotal 6" Linear Actuators$1004$20.00$420 DC Relays$8.758$10.00$80.00 Joysticks$15.702$10.00$41.40 Misc. Electronics$35.001$10.00$45.00 Linear Bearings $45.00 3 $10.00$145.00 Raw Material$16.320 $0.00 Total $747.72
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Timeline End of December – Parts ordering January – March – Building easel April – Field testing May – Completion of project
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Conclusion Easelectric meets the needs of our client and is less expensive than current products. Mechanically we are looking for a safe and simple design. Materials are strong and lightweight Electronics need to be simple yet able to properly control the device.
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