Presentation on theme: "Squidlabs radical innovation Lightweight devices for harnessing human power."— Presentation transcript:
squidlabs radical innovation Lightweight devices for harnessing human power
Objectives Prototypes Innovations / Risk abatement Power Data Production Approach Team Presentation Overview squidlabs
Objectives people power 20 W, < $10 Bio-mechanically efficient - not a lot of energy to waste. Low Noise - workplace, classroom and home use scenarios. Small - should be smaller and lighter than devices to be powered. Integrated package - components should pack small, stay together. Robust, Field Repairable - Minimize non-user servicing. Replaceable cord. Multi-modal operation - provide biomechanical and situation options.
Range of harsh conditions. Varying environmental “plug ins” to support modes of use. squidlabs target consumers World Demographics
squidlabs Power in humans. From: “Human Powered Vehicles”, Abbott, & Wilson
squidlabs Power in humans. Muscles are most efficient and develop maximum power when they contract quickly against a small resistance - a good impedance match. Limited studies suggest 165mm as optimal hand crank length for adults. Maximal power output for arms is 30-50% of that of legs, largely due to difference in muscle mass in each location. As an “engine” the human body is 15-25% efficient at conversion of fuel to net mechanical work. The rest is typically dissipated as heat. From: “Human Powered Vehicles”, Abbott, & Wilson
Rapid iteration and testing. squidlabs Approach Version 1Version 3Version 2
Multimodal use enabled by device design. Different muscle groups can be employed to avoid fatigue. Different users can find their own optimum depending on disability etc. squidlabs User Scenarios Zip Pull See-Saw Rowing ErgTreadle / Pedal
Why we use logic instead of mechanisms: Eliminate gear stages Eliminate clutches Eliminate return springs Optimize power output Load control Load conditioning Right for every user squidlabs Lower Complexity by logical control
squidlabs Advantages of logical control Device dynamically adjusts loading condition to optimize for every user
Rope Testing Rope Choice Fairlead Re-design squidlabs Risks Rope lifetime testing. Optimal Rope: 16 head Polyester Overbraid, - Low friction, High temperature tolerance. Dyneema / Spectra Core - High strength, minimizes overall diameter. Expected Rope lifetime: 2-3 years at 30 minutes per day use rate.
squidlabs User interface: Handles and clamps Design details to be determined Cost Cleanliness Multimodal Integration with package
squidlabs Power Specs Estimates Qualitative Data: Hand crank based solutions, fixed to ground can achieve 20W peaks, but for prolonged use, 5W for 2.5 minutes looks a reasonable limit for a healthy 60kg subject. A sustained 20W for 5 minutes is possible for strong healthy subjects using a see saw method in hand operation mode. Using feet 20W can be produced for similar or longer times..Subjects reported lower fatigue for see saw and zip pull operations. Cranks were particularly hard on hands and wrists. Quantitative Data: Our preliminary data would suggest twice the efficiency in our see-saw models compared to crank models in terms of calories consumed to power produced.
squidlabs Future Developments Generation 2: Specific motor - Eliminate remaining gear. Higher output device based on stair master - ruggedized W expected.
squidlabs Production Approach Timeline 2moPhase 2 / Development 4moPhase 3 / Production 4moPhase 4 / Delivery 11 months
squidlabs Phase 2 / Development : Engineering Refinements RobustnessTesting Manufacturing Sourcing (offshore) Revised Prototypes (10 units) User Testing Engineering Finalization Release design to manufacturing Production Approach Timeline
squidlabs Phase 3 / Production : Tooling First Article Approvals Tooling Modifications Pre-production TBDs Quality Control Production Approach Timeline
squidlabs Phase 4 / Delivery 100k units month 1 200k units month 2 300k units month 3 400k units month 4 1M unitstotal Production Approach Timeline
People Power Team squidlabs Technology Strategists Mechanical Engineers Electrical Engineers Materials Scientists Software Engineers Industrial Designers Manufacturing Engineers Colin Bulthaup- Squid Labs, Partner Saul Griffith- Squid Labs, Partner Corwin Hardham- Squid Labs, Partner Geo Homsy- Squid Labs, Partner Brian Warshawsky- Apple iPod Operations Product Manager since 2002, Launched iPod Mini. Don Montague- Naish / Quality Control / Manufacturing / Rope consultant Ken Gilliam- ID Management Jonathan Brill - ID Management
squidlabs Conclusion questions ? Power output: 20W is achievable in a very small package. The issue is about fatigue and how long that can be sustained. Data suggests strong healthy individuals can sustain 20W outputs for 5 minutes or more during “see-saw” operations. Size: Similar to a computer mouse or AC adapter. Weight: 300gms or 3/4lb. Manufactured Cost: Sub $10 is achievable, $8 realistic, $6-7 not impossible longer term. Risks and life time issues resolved, electronic load and motor control is possible, rope and fairlead design can get long lifetimes. Future developments include new motor design and complete elimination of gears resulting in simplification of device. Function specific chips will further eliminate electronics complexity and cost and size.
Potential Design Directions squidlabs
Potential Design Directions squidlabs
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squidlabs Electronics Schematics of smart control unit. Power Generation Motor Driving Micro Controller