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The solution of smart meter metering module

Published time : 2018-01-17 power management power module
The three-phase smart energy meter adopts the high-performance metering chip ATM90E32AS-AU-R, which can realize the advantages of high current metering precision, small temperature and frequency variation, and features stable performance, rich functions and strong anti-interference ability.

Solution Introduction

The three-phase smart energy meter adopts the high-performance metering chip ATM90E32AS-AU-R, which can realize the advantages of high current metering precision, small temperature and frequency variation, and features stable performance, rich functions and strong anti-interference ability.

The characteristics of solution

Wide viewing angle, large LCD display with rich status indication

Dual RS-485, far infrared communication interface, independent of each other.

It can store up to 13 months of historical energy and demand records, and the power data supports up to three times of settlement in one month

Maximum 8 rates, two sets of master and backup rate schedules, automatic double clock backup error correction;

Double backup data storage, automatic parameter correction;

6 types of data recording load curve can be set, the storage capacity reaches 2M bytes; and the anti-stealing and opening detection function is provided;

Record and store 13 months of voltage quality statistics;

Rich self-test, error correction and alarm functions;

After the power failure, the display can be awakened by buttons and hand-held devices, and the meter can be read by far infrared.

The Scheme framework diagram about smart meter metering module

Smart meter metering module


The Application Field

It is mainly used for supporting use in places where power meter companies, public utilities, public buildings, residential quarters, etc. 

It need to conduct centralized meter reading.

Related description about ATM90E32AS

The ATM90E32AS is an enhanced high-performance energy metering device for three-phase four-wire (3P4W, Y0) or three-phase three-wire (3P3W, Y or Δ) systems. With the measurement function,

It can also be used in power monitoring instruments which need to measure voltage, current, mean power, etc.

The features of ATM90E32AS

Categories :Integrated Circuits (ICs)
PMIC - Energy Metering
Manufacturer: Microchip Technology
Input Impedance50 kOhm, 80 kOhm, 120 kOhm
Measurement Error0.5%
Voltage - I/O High3.2V, 5.5V
Voltage - I/O Low 0.4V, 0.8V
Current - Supply:13mA
Voltage - Supply:2.8V ~ 3.6V
Operating Temperature-40°C ~ 85°C
Mounting TypeSurface Mount
Package / Case :48-TQFP
Supplier Device Package 48-TQFP (7x7)

Key Components

No. Part Number Manufacturer
1 ATM90E32AS-AU-R MICROCHIP
2 ATM90E32AS ATMEL