Measuring Conduit's supply voltage.

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  • February 25, 2017 at 11:12 am #17522
    Ajay K
    Participant

    We are planing on measuring the current draw/voltage measurements for the AEP conduit model with a LORA Card installed, sim card for cellular connection and a micro sd card which runs a cus and I was wondering if there is a built in facility in Node-RED (or perhaps elsewhere within the conduit) for reading the Conduit’s supply voltage?

    Thanks,
    Ajay

    February 28, 2017 at 11:15 am #17541
    Ajay K
    Participant

    Any thoughts on this multitech team?

    February 28, 2017 at 4:10 pm #17565
    Leon Lindenfelser
    Moderator

    Hi Ajay,

    There is nothing built into the Conduit that will allow you to determine the current draw through software. Here are some power draw numbers from our side.
    http://www.multitech.net/developer/products/conduit/mtcdt-power-draw/
    http://www.multitech.net/developer/products/accessory-cards/mtac-lora/mtac-lora-power-draw/

    Kind regards,
    Leon

    February 28, 2017 at 5:41 pm #17577
    Ajay K
    Participant

    Thanks Leon, for taking the time to respond. We have a requirement, that when an external connected power supply be it a battery or any other source that would power the conduit, is it if it hits some critical voltage range, we send a message out so that it can be replaced or handled appropriately. So if figure a way to measure it via GPIO card interface for the conduit, than we should be able to use Node-red to read values of the voltage levels? Does the Conduit GPIO card interface support, AnalogIn kind of GPIO configuration?

    Thanks,
    Ajay.

    March 1, 2017 at 10:21 am #17590
    Leon Lindenfelser
    Moderator

    Hi Ajay,

    NodeRED has an analog GPIO input node that you can use to read analog voltages using the MTAC-GPIO card. So your idea should work just fine. Below is a link to information about the GPIO card. Of course you can also pull the analog GPIO input node into a flow and read the detailed information about it. You’ll see that the input range it 0-5v. So you’d need a voltage divider if your input voltage is higher than 5v.
    http://www.multitech.net/developer/products/accessory-cards/mtac-gpio/

    Kind regards,
    Leon

    March 1, 2017 at 1:15 pm #17593
    Ajay K
    Participant

    Thanks Leon, that for confirming and that helps a lot. I guess we will plan on using GPIO MTAC Card to read the voltages.

    Thanks,
    Ajay

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