WIRELESS

Smart Meter

With the introduction of these recent innovations, metering devices can be transformed into smart meters which have abundant functions, is easy to read and capable of transmitting data on electricity, water & gas remotely.
A smart meter is typically composed of sensors, signal conditioning and collection, MCU, communication, display and smart card reader. The different smart meters require different sensors. Energy meters need voltage and current sensors.

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Water meters need flow sensors to measure flowing fluid. Heat meters need both flow sensors and temperature sensors. Gas meters need airflow sensors, temperature sensors and pressure sensors. Signal Conditioning and collection blocks are used to adjust and amplify the small signals from sensors and convert into digital signals that MCU can use. MCU is the core of a smart meter, responsible for the control of all the functions such as display, communication, calculation based on measured data, smartcard reading, and time-division charge. Smart meters usually use LCD for the display of readings and alarm information. Depending on different requirements and management modes, one of the wired communication methods such as CAN and RS485 can be selected for smart meters, and a wireless communication method such as Zigbee can be adopted. Smart card readers on smart meters make it possible to realize prepaid usage for utilities and customers.

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Hover over the blocks to view recommended products for this solution:

High precision semiconductor temperature sensor.
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High precision semiconductor temperature sensor.
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Pressure sensors with measuring range over 100kPa.
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Current Sensor used in energy meter.
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High precision amplifier is the core chip of signal conditioning circuit.
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High performance ADC converter analogue signals into digital signals
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Low power MCU is control unit of the meter

MSP430F438IPN
MSP430F438IPN
Texas Instruments
MC9S08LL16CLH
MC9S08LL16CLH
Freescale

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Analog Front End IC used in energy metereing applications
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The Zigbee modules used as the substitutes


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Voltage Reference
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CAN/RS485

MCP2551-I/SN
MCP2551-I/SN
Microchip
NM232DDC
NM232DDC
Murata Power Solutions
ADM2483BRWZ
ADM2483BRWZ
Analog Devices

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DEMO9S08LC60

DEMO9S08LC60
Freescale
The DEMO9S08LC60 Demonstration board has been designed for the evaluation, demonstration and the debugging of the Freescale MC9S08LC60 microcontroller.

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DEMO9S08MP16
DEMO9S08MP16
Freescale

The DEMO9S08MP16 is a low cost development system supporting MC9S08MP16 Microcontrollers.
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MSP430-4619LCD
MSP430-4619LCD
Olimex

MSP430-4619LCD is MPS430FG4619 starter kit development board with color graphics LCD, accelerometer, JTAG, SD/MMC card holder, joystick, two buttons, serial infrared transceiver and extension headers for most of the microcontroller pins.
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MSP-EXP430FG4618
MSP-EXP430FG4618
Texas Instruments

This versatile MSP430 Experimenter Board features a MSP430F2013 and a MSP430FG4618 and is compatible with TI’s wireless evaluation modules.
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CC2420EMK
CC2420EMK
Texas Instruments

The CC2420 is a true single-chip 2.4 GHz 802.15.4 compliant RF transceiver designed for low-power and low-voltage wireless applications.
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AC164134-2
AC164134-2
Microchip
The MRF24J40MB PICtail/PICtail Plus Daughter Board is a demo/development board for the MRF24J40MB 2.4GHz IEEE Std. 802.15.4™ 20 dBm RF Tranceiver Module. The board plugs into multiple Microchip Demo/development boards, such as the PIC18 Explorer Board (DM183032) or the Explorer 16 Develpopment Board (DM240001).
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JN5148-001-M04
JN5148-001-M04
JENNIC/NXP
The JN5148-001-Myy modules are targeted at low-power wireless networking applications, removing the need for lengthy development of custom RF board designs and test suites. They use JN5148 wireless microcontroller to provide a comprehensive solution. JN5148-001-M04 comes with an antenna connector, power amplifier and LNA for extended range. All modules can run networking stacks such as JenNet and ZigBee PRO as well as customer applications.
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ATZB-A24-UFLR
ATZB-A24-UFLR
ATMEL
This is 2.4 GHz Power Amplified OEM Module with U.FL Antenna Connector. The module is compatible with IEEE 802.15.4/ZigBee stack supporting a self-healing, selforganizing mesh network, while optimizing network traffic and minimizing power consumption.
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