Final-Presentation Project “Kuala” Winter 2014 High Speed Digital Systems Lab Presented by: Stephen Taragin Supervisor: Boaz Mizrachi

Motivation The desire to monitor the condition of a given road without being there physically. Part of the “Wisdom Stone” project Taking it to the “next level” – Relaying the information.

“The Wisdom Stone” Small electronic devices placed under the roads in various places. Gathers information about the physical state of the road by means of sampling the vertical acceleration of the road while vehicles drive over. Each stone processes the information and relays it to the hub, who then relays it to the measurement control center where it will be determined if something is wrong with the road.

The Overall System

Project Goal Design and build an electronic hub which will enable relaying the information gathered by the wisdom stones under the ground to a control center. Creating the ability to remotely maintenance the hub with zero to little physical presence.

Project Stages Stage 1: Planning Stage 2: Design – Mechanical and Electrical Stage 3: Component Purchasing Stage 4: Programming Stage 5: Debugging and Assembling

Solar Panel 30W Charge Controller Comm Plug (Stone) Battery Android Cellphone Phone Battery Battery 12v, 45 ah Metal Box “Maintenance” (MCU in the wisdom stone) USB Bat level Status DC/DC Phone reset To MCC To Other Stones Bat_Control Block Diagram of the Hub Stage 1: Planning

Maintenance – "Watchdog" The maintenance is a software to be programmed in the CPU of a wisdom stone placed in the hub which can control the status of the phone, battery and solar panel charger. The maintenance should maintain the functionality of the hub and it’s components without physical presence. The maintenance should be able to restart the cell phone in an event of software failure, other problems. The maintenance will receive a signal indicating the current battery level as well as other signals indicating the status of the charge controller. Stage 1: Planning

Mechanical Design Stage 2: Design

Electrical Design Stage 2: Design

Controllers 1 and 2 are connected to the Wistone CPU and to the rest of the electrical components of the hub. Phone power and phone battery are controlled by relays (normally open/normally closed). DC/DC converter to lower input voltage. Voltage divider to proportionally lower battery level when checking its status since the CPU can accept inputs up to 5V. Electrical Design Stage 2: Design

SYSTEM BOM Stage 3: Component Shopping

Programming Modified existing Wistone code Added support to Kuala card Found the pins which are connected to the required components and programmed them to get the correct inputs and to give the correct outputs This was done in accordance to the chip’s datasheet. Stage 4: Programming

Summary The Kuala project is an integral part of the Wisdom Stone project. The project was designed to cover many, if not all of the stages from an idea until it’s completion in order to achieve the set goals. The project was a great learning experience

THANK YOU