Sub-Meter Electricity Monitoring

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  • chris_j_hunter
    Automated Home Legend
    • Dec 2007
    • 1713

    #46


    Plogg ... a combined smart meter plug (kWh) & data logger, especially suited for metering, monitoring, and control at the point of use ...

    Hardware ... either a stand-alone end user device, or an integrated energy reporting network or as an embedded device for incorporation into OEM products ... plug-in device, a number of international plug formats are available including Schuko, French, Swiss, NEMA 5-15 and Australian.

    The Plogg use single chip single-phase meters that integrate all the primary functional blocks required of a solid state electricity meter ... features : 8051 compatible microprocessor; independent 32-bit digital computation engine; voltage reference; temperature sensor; RAM, flash memory, real time clock; two UARTs; current sensor with option of an external split core CT 100A; 16A relay; DLL/API library
    Our self-build - going further with HA...

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    • chris_j_hunter
      Automated Home Legend
      • Dec 2007
      • 1713

      #47
      Three versions :

      Bluetooth PloggBlu ... ideally suited to low density installations, where the main task is a roving or short duration, energy audit ... logged data can be collected wirelessly via a PDA (Microsoft Pocket PC enabled) or laptop and then transferred to a PC for consolidation, analysis and reporting ... this wireless version carries an embedded low power 2.4GHz ISM band transceiver ... based on Cambridge Silicon Radio's BCO4 Bluetooth chipset & provides full support for ... Bluetooth Version 2.0, including adaptive frequency hopping (AFH) ...

      PloggZgb ... the ZigBee version ... ideally suited to multiple installations where a permanent or semi-permanent fixture is intended or where the installation is in multiple sites across a wide-spread estate ... this wireless version carries an embedded low power 2.4GHz ISM band transceiver based on the Ember EM250 single chip ZigBeeTM /IEEE802.15.4 solution ...

      PloggZgb EAP ... Ethernet Access Point ... a gateway which allows access to ZigBee mesh networking modules over an industry standard Ethernet IP network ... once the IP address of the EAP has been established ... Firewalls permitting ... the EAP can be accessed from anywhere in the world ...
      Our self-build - going further with HA...

      Comment

      • chris_j_hunter
        Automated Home Legend
        • Dec 2007
        • 1713

        #48
        And :

        Real time clock function allows time of use (TOU) metering information for multi-rate applications ... 64kB FRAM memory provides fast data storage for up to 5000 measured values plus associated date & time stamps ... logging interval can be set from between 1 minute & 1 month ... 50 samples of the voltage & current signals over each cycle period ... instantaneous & cumulative values ... downloaded in csv format ... cumulative kWh, period delta values for kWh, RMS voltage, RMS current, max' watts, current and voltage, reactive power, frequency & phase angle, logging date & time ...
        Last edited by chris_j_hunter; 17 January 2009, 02:24 AM. Reason: sorry for split message - was rejected otherwise !
        Our self-build - going further with HA...

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        • Paul_B
          Automated Home Legend
          • Jul 2006
          • 608

          #49
          Originally posted by Karam View Post
          In what form?
          I mean that it would be nice if a Idratek module with the relays could measure the power usage if low-costs ICs exist. Although of course I am not an electronics person to know how you measure voltage and current at the same time.

          Paul

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          • chris_j_hunter
            Automated Home Legend
            • Dec 2007
            • 1713

            #50
            Plogg seem to have a single IC OEM option ... so maybe we are - or rather, Karam is - just a small step away !

            (BTW, couldn't help noticing that this thread is getting way more views than any others, bar one, on the whole of AH)
            Last edited by chris_j_hunter; 17 January 2009, 03:56 PM.
            Our self-build - going further with HA...

            Comment

            • chris_j_hunter
              Automated Home Legend
              • Dec 2007
              • 1713

              #51
              Plogg seem to have a single IC OEM option ... so maybe we are - or rather, Karam is - just a small step away !

              BTW, couldn't help noticing that this thread is getting way more views than any others, bar one, on the whole of AH - so if level of interest has any effect on priorities, this one would seem to score a few points !
              Our self-build - going further with HA...

              Comment

              • KirasHome
                Automated Home Jr Member
                • Oct 2006
                • 37

                #52
                It looks like they also do a inductive clamp version so you measure an entire house - it's on the bottom of the "Buy" page.

                Comment

                • chris_j_hunter
                  Automated Home Legend
                  • Dec 2007
                  • 1713

                  #53
                  well spotted !

                  wonder if Zigbee Plogg & (Zigbee) Alertme are compatible ?

                  and how they might feed into Cortex ?

                  come to that, wonder how either of these might link into Cortex :



                  (water flow-rates & leaks & stop-actions)
                  Last edited by chris_j_hunter; 19 January 2009, 06:04 PM.
                  Our self-build - going further with HA...

                  Comment

                  • chris_j_hunter
                    Automated Home Legend
                    • Dec 2007
                    • 1713

                    #54
                    Paul mentioned double-bank CUs ... just noticed this, which might be OK :



                    CUs of any size seem quite expensive, and it seems quite likely we'll be needing to accommodate quite a few DIN units ... what with the MCBs, Idratek modules, metrers, etc ... multiple CUs might be one way, but we're wondering if it might be an option to buy DIN rail by the metre & make our own arrangement, in some way ...
                    Our self-build - going further with HA...

                    Comment

                    • Paul_B
                      Automated Home Legend
                      • Jul 2006
                      • 608

                      #55
                      Thanks Chris that is just what I had in mind. Think I've seen that page before but lost the link. Back in my bookmarks now

                      Comment

                      • Gumby
                        Moderator
                        • May 2004
                        • 437

                        #56
                        Right .. coming back to the topic in hand ...

                        Last call for interest in bulk buy DIN rail single circuit units. I have a couple of candidates in mind, but obviously want qtys before approaching suppliers.
                        ----------------------
                        www.gumbrell.com

                        Comment

                        • chris_j_hunter
                          Automated Home Legend
                          • Dec 2007
                          • 1713

                          #57
                          did we solve Kevin's point about 8-bit / Cortex / Idranet tie-up ... ?

                          if there's an answer to that, I'll take twelve, please ...
                          Our self-build - going further with HA...

                          Comment

                          • Karam
                            Automated Home Legend
                            • Mar 2005
                            • 863

                            #58
                            Originally posted by chris_j_hunter View Post
                            did we solve Kevin's point about 8-bit / Cortex / Idranet tie-up ... ?
                            See post #42 in this thread. So basically I can't see that there would be a problem and we haven't had any reports of such so far (there can also be other pulse count activities such as anemometers). However if I'm proved wrong then we'd prioritise a solution.

                            Comment

                            • Paul_B
                              Automated Home Legend
                              • Jul 2006
                              • 608

                              #59
                              Karam,

                              You guys are awesome and that really differientiates Idratek for me!

                              Gumby,

                              I'll take 10

                              Paul

                              Comment

                              • chris_j_hunter
                                Automated Home Legend
                                • Dec 2007
                                • 1713

                                #60
                                great, then twelve, please !

                                our multimeter tells us our supply voltage at the new house is often well over 250VAC, so we need to include a voltage monitor, too ... any thoughts on the best way to achieve this, as well ?
                                Our self-build - going further with HA...

                                Comment

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