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AN3311 ZigBee smartplug
Doc ID 18209 Rev 1 7/58
2 ZigBee smartplug
2.1 Smartplug description
The smartplug coordinator is connected via an SPI to the STM3210C-EVAL through an “Ad-
Hoc” adapter.
In Figure 1 it is possible to take a quick look at the STM3210C-EVAL board and a smartplug
node block diagram.
Figure 1. STM3210C-EVAL block scheme
An adapter is connected to the extended connectors CN8 and CN9 on the STM3210C-
EVAL (for more detailed information please refer to the UM0600 user manual), it allows the
connection of a ZigBee smartplug coordinator and the I
2
C/RF dual interface EEPROM
M24LR64-r. The Gerber files of the adapter board are included in the setup package of this
project.
The ZigBee smartplug board can be used as a guide to build a home/building automation
subsystem for energy management. In a typical application, the board is plugged into an
electrical wall socket and supplies an electrical load, monitoring the energy consumption;
using several smartplugs it is possible to monitor and control the home/building energy
consumption socket by socket. The board includes the following functions, shown in the
block diagram of
Figure 2 :
●
Energy measurement
● Load differential current
●
Load driving by relay or TRIAC (dimming)
● ZigBee communication capability.