Project Logs

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• Composition of system

  zaksignu • 02/20/2019 at 10:09 • 0 comments

  The main idea of this project - to use parts, which can be bought at ordinary autoshop.

  To build up chain oiler you will need

  • pump for oil
  • shut off valve
  • brake hose ( metall one)
  • resin oil-resistant hose 
  • tank for gear oil

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• Status mode description

  zaksignu • 02/20/2019 at 07:52 • 0 comments

  Thereis 7 status mode: 

  • max oil level ( its normal state)
  • medium oil level( its normal state)
  • a little oil level( its normal state)
  • flow state ( it is special state)
  • no current state ( its not normal state)
  • overcurrent state ( its not normal state)

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• TIM2 routine

  zaksignu • 02/20/2019 at 06:57 • 0 comments

  TIM2 fires every 500ms. It has :

  • routine to define input variables (oil_level, wet_state, flow_state flags)
  • routine to define exact state of  working cycle
  • routine to define flow_mode flag
  • routine to define currents of mosfets ( project)

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• TIM 4 routine

  zaksignu • 02/19/2019 at 16:38 • 0 comments

  Main flashing cycle contains 5 TIM4 tick. During TIM4 ticking, orderstate variable moves from 0 to 4 and returns to 0. 
  

    
  

        orderstate
  

         0          1            2           3         4          
          |250мс|250мс|250мс|250мс|250мс|
         ------------------------------------------------------
          |||||||||||||||            |||||||||||||||||   
  

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• Main concept for STM

  zaksignu • 02/19/2019 at 12:37 • 0 comments

  Main concept for STM.

  There are 2 timers -  TIM 2, and TIM4. Period of TIM2 approximately 0.5ms, period of TIM4 approximately 0.25ms. TIM 2 is using for controling MOSFETS, obtaining parameters ( flow status, wet status, oil level) and status updating. TIM4  is using for indicating ( green - red led). 

  Period of led indicating is 5 TIM4. 

         0          1            2           3         4          
          |250мс|250мс|250мс|250мс|250мс|
         ------------------------------------------------------
          |||||||||||||||            |||||||||||||||||     
  

  Thereis 7 status mode: 

  • max oil ( its normal state)
  • medium oil ( its normal state)
  • a little oil ( its normal state)
  • flow state ( it is special state)
  • no current state ( its not normal state)
  • overcurrent state ( its not normal state)
  • start state ( first run)

  so green-red led has different flashing modes with different states. 

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