Smart Appliances Guide

1-6
n
Connected Smart Appliances - Gen III
GENERAL INFORMATION
Typical “Gen III” Connected Appliance Block Diagram
Connected Appliance Block Diagram (Figure 3)
In most “Third Generaon” Connected Appliances, the
WiFi Module, Power Measurement (PM) Board & Current
Transformers (if exists) are essenally the same. The
components that are appliance specic are the HMI (Human
Machine Interface (UI) and Appliance Control Unit (ACU).
The WiFi Module is a common cross-category design that
provides the interface between the Smart Appliance and the
Internet via the Home Area Network (HAN). It communicates
to the appliance internally via WIDE/WIN and to the Internet
via WiFi over TCP/IP.
The Power Measurement (PM) Board performs actual power
measurement by calculang both real power (kW) as well as
L2
L1
Neutral
AC Voltage Detecon
AC Current Detecon
HMI (UI)
WIFI
Power
Measurement
ACU
Electric Heater
5V
WIN
GND
CT2
CT1
Dryer Example
NOTE: All 240 VAC appliances
(including this electric dryer
example) will have 2 current
transformers (CT1 & CT2).
real power/me (kW h). This is achieved by measuring AC
Voltage, which is delivered to the PM board from the Line
Voltage coming into the appliance; and AC Current, which is
delivered to the PM board from the Current Transformer(s).
An algorithm in the soware uses the voltage and current
readings to determine actual power use for the appliance.
Appliances running on 120 VAC will have a single Current
Transformer (CT1) measuring power use on L1. Appliances
running on 240 VAC will have 2 Current Transformers (CT1 &
CT2) for both L1 & L2.
Figure 3 - Connected Appliance Block Diagram Example