INTELLIGENT STREETLIGHT ENERGY-SAVING

SYSTEM BASED ON LONWORKS POWER LINE

COMMUNICATION TECHNOLOGY.

A Technical Seminar

On

By

TEJARAJA KUMARA K H

(4JN11TE053)

TCE VII(SEM)

Jawaharlal Nehru National college Of Engineering

CONTENTS:

Introduction

System block diagram

Lonworks Powerline control Node

i.Lon Smartserver

Monitoring Software

Advantages

Conclusion

Reference

introduction:

Street light plays a very important role and it’s expenses are

very huge.

It Requires Almost 40% of the Total energy consumption in a

city, Which brings a heavy pressure to electric energy supply

and environmental protection.

To Reduce the energy consumption here we use i.LON

Smartserver, The power line smart transceiver and monitoring

software ’Streetlight vision’.

Explanation

The structure is mainly divided in to Three layers

1. Management Layer.

2. Communication Layer.

3. Field control layer.

External Components were used are

1. External GPRS modem.

2. i.LON Smartserver 2.0

Management layer is mainly responsible for

sending relevant control command to streetlight

control nodes and receiving the feedback

about the streetlight operation condition from

the streetlight control nodes.

The communication control layer is mainly consists of the Echelon corporation intelligent

server ‘i.LON SmartServer 2.0’.

It realize the protocol conversion between the

LonWorks protocol and the IP protocols.

i.LON SmartServer used as a local controller to

monitor and control each streetlight

independently.

Work as a data interface to remote

management service center.

The external GPRS modem is added to i.LONSmartServer to achieve information exchange

with the management center through GPRS

which helps to reduce the cost.

Monitoring Software helps to achieve

communication with the i.LON SmartServer to

configure, manage and monitor the operation condition of streetlights.

The field control layer is composed of many

streetlight control nodes.

Each streetlight control node contains a

LonWorks power line streetlight controller that is

mainly responsible for the collection of the field

data and the control of the streetlight operation

condition.

The data transmission is carried on through

LonWorks power line carrier communication

technology between control node and control

node and between control node and

communication control layer.

Lonworks Powerline control

Node

Every streetlight will control by Lonworks power

line controller with i.Lon Smartserver which

reduces the cost & workload.

All the controller will contain a independent physical and logical address.

By matching with the GIS(Geographic

Information System) control of system will be

managed.

Lonworks power line communication is

standardized by American Echelon Corporation.

American Echelon Corporation introduced two

Lonworks power line transceivers PL3120 and PL3150.

They have built-in ISO14908 control network

protocol and binary phase shift keying(BPSK)

modulation technology.

PL3150 Power Line Smart

Transceiver

PL3150 adopts BPSK modulation technology and it has

two carrier frequencies.

First carrier frequency of 132 kHz(dominant frequency)

and second carrier frequency of 115 kHz (vice

frequency).

The dominant frequency has a better ability for

correcting distortion and resistance to noise.

Vice frequency has a stronger error correction ability.

When the preferred dominant frequency is blocked

by the noise, the vice frequency will be selected to

transmit information automatically.

It can successfully receive some signal that cannot

be detected by other transceivers.

It uses high-efficiency and low consumption forward

error correction code algorithm.

Reset Circuit

The time required by reset ranges from 50ms to

500ms depends on the smart transceiver.

When the PL3150 with external flash memory is

used, the low-voltage detect circuit with pulse broadening capacity is necessary to avoid

invalid internal reset.

Service Pins

Service pins circuit is used for the configuration,

installation and maintenance of the streetlight

control nodes.

The service pins situation is not uncertain during the reset.

Coupling Circuit

Coupling circuit is actually a high-pass filter and it

can filter the low-order wavelet of 220V AC

power.

The communication signals will be injected into the 220V AC power line through the coupling

capacitor when it is used as a sending device.

An inductance of relatively high value should be

chosen to reduce signal loss and improve power.

Streetlight Monitoring and

Control Circuit

It is used to monitor and control the operation

condition of streetlights and to achieve the

maximization of energy-saving.

It includes voltage and current measurement circuit, power measuring circuit, light bulb failure

detection circuit, real-time clock, probe

detecting road utilization, traffic flow detection

circuit and weather detection function module.

i.Lon Smartserver

The intelligent server i.LON SmartServer 2.0 is the

important hardware device of the intelligent

streetlight energy-saving system.

i.LON SmartServer is a low-cost, high-performance,

multi-functional intelligent energy management

server which can be applied to any IP-based

applications.

It is able to connect thousands of electronic

equipment to the management center.

It save energy, improve operational efficiency and

decrease maintenance costs through getting information from the electronic equipment.

MONITORING SOFTWARE

In the streetlight management center, it needs to use

streetlight monitoring software to manage all of

i.LON SmartServers and all of streetlight nodes

connected to the LonWorks network.

The Streetlight Vision Corporation of France has developed 4th generation streetlight monitoring

software.

The 2009 year Outstanding Software Award has been

awarded to the streetlight monitoring software of the

Streetlight Vision Corporation by LonMark

international association in Chicago in 2009.

Streetlight Vision monitoring software consists of

three parts

1. Streetlight Vision Design Module.

2. Streetlight Vision M2M Data Acquisition Module.

3. Streetlight Vision Web Portal Module.

configuring i.LON SmartServer, displaying the

unique address list of streetlight control nodes.

The data uploaded from i.LON SmartServer is

filtered and collected.

Interface with wed.

advantages

Effectively monitor and control.

Reduce the energy consumption and carbon

dioxide emission.

Beautify the cities and to improve the drivers and

pedestrians safety.

It can record and report the energy

consumption information and streetlights working

hours.

Helps to collect traffic flow information and weather sensor information at the same time.

SuMMary

The intelligent streetlight energy-saving system

with networked management is a more flexible,

simple, economic and efficient energy-saving

lighting solution,

This system not only save the energy but also can

provide more personalized service for the safety

of vehicles and pedestrians(walkers).

Reference [1] i.LON SmartServer user guide, Echelon Corporation, 2009.

[2] PL 3120/PL 3150 Power Line Smart Transceiver Data Book, Echelon

Corporation, 2008.

[3] Yungui, Zhang, Lina,Wang, LonWorks fieldbus system design and

application, Beijing: China Electric Power Press, 2010.

[4] Anbang,Gao, Duwen,Sun, Hong,Shan, LonWorkstechnology

development and application, Beijing: China Machine Press, 2009.

[5] Yongsheng,Liu, “LONWORKS(R) Solutions for Street Lighting,”

Instrument Standardization and Metrology, vol.5, pp.20-23, 2005.

[6] Yongsheng,Liu, “Power Line Carrier Communication Technology of

Echelon,” Instrument Standardization and Metrology, vol.4, pp.20-23,2005.