Shampoo & Conditioner Identification Device. Backpack Lever Arm System. Team 4: Lu Ma Nahum Kryzman Raj Shah

Transcription

1 Shampoo & Conditioner Identification Device Backpack Lever Arm System Team 4: Lu Ma Nahum Kryzman Raj Shah

2 Overview Introduction Objective Previous Work Subunits Prototype Budget Project Highlight

3 Shampoo & Conditioner Identification Device Shampoo???

4 Introduction Client Background: Reduced visual acuity Mild-to-moderate progressive cognitive impairment Client Need: Independence Distinguish between shampoo and conditioner bottles

5 Objective Design and develop an instrument that allows Mrs. Smith to differentiate between shampoo and conditioner bottles while in the shower: Outputs an audible message in response to the depression of a button Customizable to fit different size bottles Safety: Compact and Waterproof

6 Previous work Similar NSF projects: Shampoo and Conditioner Voice Device for People with Vision Problems in the Shower (Spring 07): Weight Client need talking calculator - Cynthia Henderson (Department of Agricultural and Biological Engineering of Mississippi State University) GPS voice output device - Kurt Peterson and Neil Peterson (Department of Electrical Engineering of North Dakota State University)

7 Similar Products Verbal indication devices are also used in many children interactive learning toys: When user presses on the items, appropriate voice outputs help them to identify the objects, colors, shapes and learn phrases. Fisher Price - Laugh & Learn Learning Table Jumbo Talking Elmo

8 Patents U.S. Patent No. 6,449,887 Water Globe with Touch Sensitive Activation U.S. Patent No. 4,748,756 Touch Activated Enhanced Picture Frame U.S. Patent No. 7,264,377 - Sensor-Activated Audible Story Lamp U.S. Patent No. 7,269,484 - Vehicular touch switches with adaptive tactile and audible feedback

9 Visual Representation of the Device Circuit Speaker

10 Message Recording Circuit Records audio messages ( Shampoo! and Conditioner! ) Plays pre-recorded messages through a small speaker Activated by a push of a button

11 Amplification System Amplification System Based around an LM4876 audio amplifier Delivers 1.1W of continuous average power to an 8Ω load Provides high quality output with a minimal amount of external components Draws only 6.5 ma which will not drain batteries quickly.

12 Speakers Compact and light Compatible with the message recording and amplification circuit 1 watt 8 ohms speakers 35mm in length and 20mm in width A 83 db sound pressure level and a full frequency range

13 Enclosure The amplification and message recording circuits are integrated Powered by 2 AAA batteries Sealed by a thin layer of plastic protection Battery compartment left open for easy access

14 Enclosure con t ipod Pro Armband: Waterproof used for swimming and diving made from Neoprene, a material used to make wetsuits, hoses. Corrosion Resistant, Durable Neoprene is used corrosion resistant coatings. Lightweight/Compact: 9.7cm in length and 6.45cm in width Customizable to various bottle sizes

15 Enclosure con Enclosure con t Insulated the front cover

16 Prototype

17 Budget

18 Project Highlights Significant Potential to Make a Difference Alzheimer s Disease Post-Ophthalmic Surgery Patients Product Utility and Uniqueness Integration of technology to produce a healthcare device of this kind. Small Niche Market Product Features and Benefits Small, Lightweight, Customizable, Portable. Client Satisfaction Independence, Self-reliance Novel Concept - Goals and Potential Potential for Diversification (i.e. Kitchen: Juice Bottles in the Refrigerator)

19 Backpack Lever Arm System I need my bag that s at the back of the wheelchair! HELP!!

20 Introduction For individuals with cerebral palsy, manipulation of common objects can be quite difficult. The need to constantly ask others for help causes a loss of independence and has a negative affect on a person s self image. Our particular client, Mason, is an eight-year old boy with cerebral palsy, who has good motor control of his right shoulder/arm/hand. Strong desire to be independent and wishes for the capability to access his possessions without outside assistance.

21 Objectives Design a device that will transport Mason s backpack to a usable position when it is required and also keep it safely stowed away when it isn t. The device needs to be: Light weight. Reliable. Efficient. Manageable. Inexpensive.

22 Previous Work Backpack Transfer Device Thomas Cabell and Brian Deuter the Department of Agricultural and Biological Engineering of Mississippi State University An aluminum track with a 90 degree curve in the middle. Transfers, supports and stores backpacks to facilitate independence for a student with cerebral palsy. Attached to the wheel chair in two places. Can be easily configured to another any wheelchair.

23 Similar Products Magic Arm made by Beneficial Designs Inc. a 90 degree pivoting end. a 360 degree rotating elbow. a 360 degree rotating end. Both ends have studs that are tapped and fit any standard 5/8 inch socket.

24 Patent Research U.S. Patent No. 5,180,181 - Motorized Movable Storage Bag for Use on a Wheelchair U.S. Patent No Pivoting Wheelchair Backpack Holder U.S. Patent No. 4,919,443 -Swing-Out Backpack for Wheelchairs

25 Visual Representation

26 Three Segments of the Arm Dimensions: Length: Limb One = 22 in. Limb Two = 20 in. Limb Three = 10 in. Cross-section: 1 in by 1 in Material: 80/20 s aluminum T-slotted profile: Light Easy to work with Durable

27 Movement of the lever arm Hinge One Hinge Two

28 Movements Cont d Wheelchair Limb Three Back Ø Ø Limb Two Limb One Ø Hinge Two Hinge One Hinge Two Limb Two Ø Hinge One

29 Hinges Critical Component - Needs to support the weight of the limbs, motors, and backpack. L-shaped Bar Aluminum Bar bearing

30 Servo Motors Controlled by Microcontroller (PIC16F877) CCP Module Pulse Width Modulation (PWM): By varying the duty cycle of the pulse sent to the motor, different angles can be established. Motor One (HS-785): Used to Rotate Limb Three 90 o Motor Two (HSR-5995TG): Rotates 180 Originally Altered the Resistance and Achieved 270 o Rotation for Limb Two

31 Servo Motors Control Circuit Features 2 switches: Forward/Reverse motion Turn the Device ON/OFF Enclosed by a black plastic box

32 Schematic of the Servo Motors Control Circuit

33 Attachment of Device to Wheelchair Attachment of Device to Wheelchair Crossover Clamps Adjustable and ranges from ½ inches to inches in diameter Goes through the two vertical bars at the back of the wheelchair Two screws on either side of the clamp will go through the pre drilled holes on limb three

34 Prototype

35 IT WORKS!!

36 Budget

37 Project Highlights Versatility: Can be used by anyone that has trouble with awkward postures. Including individuals with progressed forms of muscular dystrophy or multiple sclerosis. Device does necessarily have to be used in a school setting, but can also be used in the professional field or social settings. Promotes independence for disabled people. Folding technology has not been adapted to a device of this sort. Folding allows: Safe storage and transfer to closer proximity. The low cost of our project makes it attainable by a much wider range of users.

38 Acknowledgments Sponsor: NSF Dr. John Enderle Dave Price Serge & Rich Lisa Ephraim Jennifer Descrosiers

39 References

40 QUESTIONS??