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Project Wisdom Stone Networking using MiWi

Project Wisdom Stone Networking using MiWi. Done By: Amnon Balanov & Yosef Solomon Supervisor: Boaz Mizrachi Project ID: d02310. Project Wisdom Stone. Small sensors, with very low power consumption Planted under roads Performing monitoring of road maintenance status.

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Project Wisdom Stone Networking using MiWi

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  1. Project Wisdom StoneNetworking using MiWi Done By: Amnon Balanov & Yosef Solomon Supervisor: Boaz Mizrachi Project ID: d02310

  2. Project Wisdom Stone • Small sensors, with very low power consumption • Planted under roads • Performing monitoring of road maintenance status This information will save money by decreasing maintenance costs and time!

  3. Project Wisdom Stone • Based on a PIC24 micro-processor by Microchip • Networking • 433 MHz enabled by a MRF49XA Tx/Rx by Microchip • Networking runs MiWi (Microchip propriatory S/W stack) • Sampling done by MMA8451Q accelerometer by Freescale

  4. Product Delivered • Networking layer • Reliable data transmission based on 512Byte blocks • Accelerometer • Configurable sampling of data (res., freq., mode) • GUI • Simple interface for further system tests

  5. General SW Layers Diagram

  6. General HW Components Diagram

  7. Sample / Transmit working modes • Definition and support the following working modes: • Store samples (SS): Samples are stored in non-volatile memory for long period. • Transmit samples (TS): Samples are read and transmitted from non-volatile memory through Wireless/UART/USB. • Online sample and transmit (OST): Samples are read from sensor and then transmitted through UART/USB/Wireless, using internal SRAM memory (double buffer mechanism), without access to non-volatile memory.

  8. Network Diagram The sensor side PC side INIT INIT Send Command Interpret command & Send Data Receive Data Go To Sleep New/End Session

  9. Network Init • The WiStone will initialize first and create a new network on the channel with the lowest amount of noise. • The communication plug that will be connected to a PC via USB, will be the second to initialize the networking layer, and will connect to the network created by the WiStone.

  10. General Protocol • A command will be sent via the comm. plug • A reply will be sent – this could contain many blocks.

  11. Network Reliability

  12. And now a short Demo…

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