Support Engineering Group : MARS MVC Monitoring Device This page last changed on Feb 03, 2011 by tm. Estimate for MARS MVC Voltage Monitoring Device: Short answer: 15 man days for TM, $1500 budget Breakdown on estimate: 3 to 5 days making stuff, 5 to 7 days coding, 5 days testing and dealing with 'challenges' Details (Thoms note to self) - based on reading Alcatel spec and discussion with Alcatel engineer Create small dev board with spi bus A/D device (tlc2543). Hand wire (half day) by Jose's team (A/D converter, plus voltage regulator, plus some resistors or pots on the inputs, plus bypass. Purchase ($500) and Modify USB to SPI bus converter per Alcatel instructions for debug/diagnostic/development tool ( http://www.jovasolutions.com/tims-0102-usb-to-i2cspi ) Spec out and buy a microcontroller ($400) with Ethernet and SPI capabilities (LanTronix, Stellaris, etc). Software dev environment might be extra ($500??) Plan also for buying a spare ($200). Write microcontroller driver to read multi-channel A/D on dev board via SPI Write microprocessor application to provide Ethernet socket access to the A/D converter on dev board. Write simple linux code to exercise socket Add circuit to boost SPI bus voltage for compatibility with MVC -see page 19 of the Alcatel spec for the schematic of opto-isolated 12v level SPI bus to TIMS-0102 USBtoSPI. Test with MVC and some form of Rich Schramms top side app (will need help from Ken Heller, possibly Alcatel hooking up MVC). Attachments: tlc2543-ep.pdf (application/pdf) mars-alcatel-spibus-doc.pdf (application/pdf) Comments:
This work is being transitioned to Mike Risi for 2011 Posted by tm at Feb 03, 2011 20:49

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