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Md Mubdiul Hasan
Md Mubdiul Hasan
Associate III
June 5, 2018
Question

Need I/O controller EVM board

  • June 5, 2018
  • 8 replies
  • 1291 views
Posted on June 05, 2018 at 06:30

Hi there,

I have been back to high power design.

My system contains 3phase, 380V, 50Hz ac input, secondary surge protector, Aux Tr ( single phase, 380V/220V, 300VA), phase transformer( 3ph, 380v/12v,0v,12v,100VA) and a main transformer ( 3ph, 380V/9V,18V,800VA),

SCR(1600V, 50A) bridge, DC reactor( DC 20V,20A). Rectifier output should be DC 20V 20A.

My requested EVM should be,

1. PTR secondary windings phase, amplitude and rating controller.

2. MTRs secondary fuse (690V, 32 A) sensing

3. SCRs switching controller.

4. 50mlV, 30A shunt sensing,

5. GPS communication,

6. RSM

7. LAN

8. Display....etc,

Kindly recommend me one.

You can also transfer this post to suitable forum.

Regards

Hasan

#high-power #rts #rs-232

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    8 replies

    AvaTar
    AvaTar
    Senior III
    June 5, 2018
    Posted on June 05, 2018 at 12:33

    You can also transfer this post to suitable forum.

    That is what probably happened ...

    To get useful suggestions, you might want to be a bit more precise with your requirements, especially regarding accuracy,  data throughput, and communication protocols.

    The last two items (LAN and display) seem the most critical to me.

    What exactly means RSM in this context ?

    Md Mubdiul Hasan
    Md Mubdiul HasanAuthor
    Associate III
    June 7, 2018
    Posted on June 07, 2018 at 02:11

    Dear Sir Avatar,

    Nice to get your feedback, I remembered you helped me a lot in last project at 2016.

    To get useful suggestions, you might want to be a bit more precise with your requirements, especially regarding accuracy,  data throughput, and communication protocols.  

    At this inital stage, I am afraid about data protocol. But what I have understand this I/O board should be follow RS-232 with PC.

    The last two items (LAN and display) seem the most critical to me. What exactly means RSM in this context.

    This power system is connected with a test station locally and also far away. System should be perform  with LAN facility ( may be for data network). Display should be use for voltage, current, time, setting etc.

    Last iteam, I did wrong. It should be RMCS. This system should be monitored from thousand miles away. Remot control monitoring  service is required. 

    Let me think about the system device more deeply. Looks complex !

    AvaTar
    AvaTar
    Senior III
    June 7, 2018
    Posted on June 07, 2018 at 06:52

    At this inital stage, I am afraid about data protocol. But what I have understand this I/O board should be follow RS-232 with PC.

    I asked because there are protocols around in this domain which are a bit complex, requiring some code space. RS232 itself should not be a problem.

    Neither are a few text lines of a graphical display - unless you want HD or UHD ...

    System should be perform  with LAN facility ( may be for data network). ...  This system should be monitored from thousand miles away. Remot control monitoring  service is required. 

    In my experience, the actual data flow to/from the device is not the problem. But hardly any 'IoT' device works properly in a normal office network, the by-going traffic just floods the network interface. If you can control such unrelated traffic (e.g. with an ethernet switch), this should work as well.

    The electrical measurements sound pretty standard, the transducers/converters to get MCU-allowable voltage levels are much more expensive than the MCU itself.

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