Solar Study Lamp project specification and summary
April 23, 2011 revision
Summary: Design and develop a solar powered desktop study lamp. This lamp will be assembled into subsystems, and final assembled as a student project kit. A student lesson plan developed and the end-product used by rural students in off-the-electrical-grid locations.
Objectives:
- Research small solar energy systems, components, and similar solar lighting
- Create a suitable electrical system schematic for a solar panel and battery powered study lamp.
- Create or adapt from an existing design, a suitable mechanical enclosure.
- Investigate and identify commercial sources of components (ie. Photovoltaic panels, batteries, charge controllers, lighting, etc.). Prefer to partner with manufacturer and parts sources in
China China to ship to Evergreen Schools inChina - Development and prototype within budget .
- Production Kit budget $20 USD
- Design reference lesson plans involving solar power systems.
- Lamp to operate during nighttime hours for a minimum of 6 hours. Charging time in daylight of approximately 8 hours.
Schedule:
Proposal and BOM to Chinese Development & Manufacturing Companies, May 20, 2011
Visit companies and Award project May 20 - June 1, 2011
Approval of parts, June 17, 2011
Prototype 2 units, July 1, 2011
Second build if necessary, 2 prototype units September 1, 2011
Production trial 20 units, November 1, 2011
Final production and delivery of kits – date to be determined
Logistics Summary and Schedule
· Specification
· Supply Chain development
o Major parts list created
o Identify China
· Prototype Design and construction
o Parts list and procurement
o Modify Linear Tech reference design board
o Prototype Mechanical Design
· Prototype testing
o Brightness
o Charge time
o Lighting run time
o Charge cycles
o Mechanical durability
· Make design changes for final design
o PCB design
o Electronic parts and wiring
o Mechanical design
o Solar panel
o Battery
· Review of Design and Logistics Plan
· Create Student lesson plans
· Small run build of 20 units
· Trial run of lesson plan and student final assembly
Manufacturing Partner
The winning proposal and our desired partner will be one who has charitable intention – for example, use of suppliers that will give cost break, doing work for overhead cost, and minimal profit. At the completion of the first production trial, Evergreen Education Foundation will present a letter that can be used to show Corporate Social Responsibilities (CSR) action by your company. Additional promotional opportunities could also be negotiated at a future date.
Engineering Design Specification
*detail descriptions to guide the design of the major subsystems (Solar panel, charge controller board, battery, and enclosure) would go here - not published in blog due to length of content
