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Solar Telematics System

Solar Telematics System. Design Constraint Analysis Presentation. Brian Kelley Clayton Dickemann Dan Ehrman Craig Lechlitner. Updated Block Diagram. Wireless. PSSCs. 1.      An ability to track vehicle location through GPS.

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Solar Telematics System

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  1. Solar Telematics System Design Constraint Analysis Presentation Brian Kelley Clayton Dickemann Dan Ehrman Craig Lechlitner

  2. Updated Block Diagram

  3. Wireless

  4. PSSCs 1.      An ability to track vehicle location through GPS. 2.      An ability to receive and send CAN messages from and to other systems in the car. 3.      An ability to display graphics on the LCD display. 4.      An ability to respond to user input using a touchscreen. 5.      An ability to store and load data to and from non-volatile memory.

  5. Primary Criteria • Project must be maintained by other PSR members • We have dev. tools and programming experience with PIC devices • Space • Some information must be visible at all times • Must be readable in moderate sunlight

  6. Computation Requirements • Control Microcontroller • GPS, CAN, UART x2, SPI • Low CPU usage • Graphics Controller • 800x480 at 4 Hz (absolute minimum), 40-60 Hz desired • Rendering images • Reading from SD card • Generating sound

  7. GPIO Requirements

  8. On-Chip Peripherals

  9. Off-Chip Peripherals • GPS: LS20031 • 2MB, 10ns SRAM: ISSI IS61WV102416BLL • SD Card: 2 GB • Touchscreen Controller: TSC2000 • Audio Volume Control: MCP4241 • Audio Low-Pass Op-Amp: MCP602 • Audio Amplifier: LM4950

  10. Power Constraints • Need to keep power reasonable, but not a huge concern • Design will take about 6 W • Should be a reasonable size for a small car • Needs to be easily usable by a driver Packaging Constraints

  11. Epson S1D13517 PIC24DA • + Has rectangle copy/character gen. • + CPU can manually access pixels • + Has a deflate processor • + Is a microcontroller • - Has to use SRAM, which is expensive + Can interface with SDRAM + Has better alpha blending - 8-bit interface - Silly Command Interface

  12. STM32F103CB PIC32 + PSR standard + PSR CAN library already created + Has lots of extras + Experience - MIPS isn’t as “real-world” as ARM + 48-pin + ARM is in everything + Single-cycle multiply and divide + Temp. sensor - Only one SPI - Never used before

  13. Questions?

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