networked wireless meter reading

8/3/2019 Networked Wireless Meter Reading

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Networked Wireless Meter ReadingSystem Based on Zigbee

Technology

presented by,

CHINCHU K SASIS7 EEEROLL NO : 18


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Benefits of Advanced Metering

Accurate meter reading, no more estimates

Improved billing

Accurate Profile Classes and Measurement Classes,true costs applied

Improved Security for premises

Energy Management through profile data graphs

Less financial burden correcting mistakes

Less accrued expenditure

Less time chasing call centers to provide meter readings

Transparency of cost to read metering

Improved procurement power though more accuratedata - de-risking price


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CONVENTIONAL ELECTRICITY METERAND ELECTRONIC TOU METER


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WHAT IS ZIGBEE ?

Technology of data transfer in wireless networks

Low cost

Low power consumption

Less time consuming

Less tiring


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ZIGBEE ARCHITECHTURE


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ZigBee Frequencies

868 MHz European Band at 20kbps

ISM 2.4 GHz Global Band at 250kbps

915 MHz North American Band at 40kbps


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ZigBee Frequency Bands


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Network Topology Models

PAN coordinator (PANC)

Full Function Device (FFD,Router)

Reduced Function Device (RFD)

Star

Mesh

Cluster Tree


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THE FEATURES OF ZIGBEE

MODULE USED IN TOU METER

- Transmit power : 1mW or 0dBm - Receiver Sensitivity : -92 dBm - Range : 30m (indoor), 100m (outdoor) - Data Rate : 250 kbps (max)

- Internal packet memory : 127 Bytes - Module data interface : serial

- Serial data rate :1200-115200 bps - Operating frequency : ISM 2.4GHz - Antenna : chip type

- Supported topologies : Point-to-point, Point-tomultipoint and Peer-to-peer - Channels : 16 Direct Sequence - Addressing Options : PAN ID, Channel and Addresses - Dimension : 2.438 cm x 2.761 cm


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Zigbee through AMR system


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Tou meter with zigbee RF trancievermodule


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INTERNAL HARDWARE ARCHITECTUREOF TOU METER


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RS 232 Serial communication MAX 232

FEATURES: Meets or Exceeds TIA/EIA-232-F and ITU Recommendation V.28 Operates From a Single 5-V Power Supply

With 1.0-_F Charge-Pump Capacitors Operates Up To 120 kbit/s Two Drivers and Two Receivers 30-V Input Levels Low Supply Current . . . 8 mA Typical ESD Protection Exceeds JESD 22

- 2000-V Human-Body Model (A114-A) Upgrade With Improved ESD (15-kV HBM) and 0.1-_F Charge-Pump Capacitors is Available With the MAX202 Applications - TIA/EIA-232-F, Battery-Powered Systems, Terminals, Modems, and Computers


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Transmission in 89C51

Register SBUF to hold data.

Register SCON controls data communication. RegisterPCON controls data rates.

Pins RxD (p3.0) and TxD(3.1) connect to serial data n/w.

SBUF is physically two registers, one is writing only.The other is read only and holds received data from anexternal transmitting source via RxD.


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The data transmission steps are:

Initially the t1 flag is reset.

Data to be transmitted must be written into

SBUF. As soon as data is transmitted the T1 flag is set

and main program is interrupted to execute ISR.

In the ISR T1 flag is reset .another data iswritten in SBUF register.


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Liquid Crystal Display (LCD)

More flexible than LED display andallow variety of text and/or graphics

Suitable for low power applications More reliable in sunlight and can use

backlight for night viewing

LCD size specification same as amatrix order

LCDs are expensive


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Zigbee coordinator zigbee device


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CONCLUSION

It is high time that our traditional billingsystem gives way to the modern one. Thissystem will prove to be a majorbreakthrough in the field of billing systemin the future and hopefully this will be atrendsetter in the years to come.

| A SMART WORLD IS THE FUTURE


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FUTURE SCOPE

Can include more operations

Distance can be increased

For wide area operation, other technologiescan be used


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THANK YOU

networked wireless meter reading

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