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LTM sensor, Keystone of the SMART CITY

The setting of luminous flux today

Energy saving: Setting of Luminance via Hourly Program According to setted time, luminous flux changes by getting energy saving.

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Change of luminous flux in function of traffic level historical statistical data.

The setting of luminous flux today

MONEY SAVING By statistics, the setting

• f luminous flux allows

saving of around 30%

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Is it possible to get more ?

The setting of luminous flux today

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SAFETY By setting on statistics approach, we take the responsability to set the safety in a statistic way as well Is it possible to set the correct level of light required to guarantee safety?

Regolo Project

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The research project

REVERBERI the integrated control of public lighting

Hardware construction and data collection REGOLO Project – Treviolo (BG)- Italy

The research project

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Measures campaign by night c

The research project

REVERBERI il controllo integrato dell’illuminazione pubblica

Data collection 6 months Compared to statistical setting system +40% of saving

Smart lighting: the Standards

Adaptive lighting (CEN 13201)

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Smart lighting: the Standards

Adaptive lighting (CEN 13201): changes of level of luminance and lighting controlled in time in relation to trafic, hour, meteo conditions and other parameters. Lighting class defined in the most adverse conditions. Most important parameters:

• trafic volume
• meteo conditions
• environmental luminance

REVERBERI the integrated control of public lighting

Smart lighting: the Standards

REVERBERI the integrated control of public lighting

Smart lighting: the Standards

REVERBERI the integrated control of public lighting

We can assume, according to defined parameters change model, a simple control system by hour cycles as best. In other situations, an interactive control system connected to real-time data might be preferable. Ensure normal lighting class to be activated in case of road works, serious accidents, bad weather

• r poor visibility.

+ Safety

The adaptive lighting to improve safety conditions:

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+ Safety

The adaptive lighting to improve safety conditions: tests performed by Netherland Road Authorities (DYNO) show that, in case of adverse meteo conditions, luminance levels compared to project estimation should be doubled. Even in case of queues or accidents.

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• Consumptions

The adaptive lighting is a guarantee of minimum consumption

REVERBERI the integrated control of public lighting

• Consumptions

The adaptive lighting is a guarantee of minimum consumption The exact knowledge of trafic volume allows to correctly set the level of dimming: guaranteed saving but guaranteed safety as well. Tests show that saving can reach 25% difference in case of real-time measures or hourly timetables

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+ Safety

REVERBERI the integrated control of public lighting

SAFETY FROM TRAFFIC ANALYSIS Same road Different conditions

• Consumptions

The adaptive lighting is a guarantee of minimum consumption

REVERBERI the integrated control of public lighting

• Consumptions

The adaptive lighting is a guarantee of minimum consumption The over dimensioning of the project and the maintenance factor can both be recovered thanks to real-time luminance measure (reduction of consumption from 10% to 20%)

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+ Safety

Meteo conditions are a warning factor

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+ Safety

Meteo conditions are a warning factor: If raining the uniformity goes down: dimming is NOT raccomandable, it is dangerous. The lighting measures in these conditions can lead to

• pposite

conclusions.

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+ Safety Meteo conditions are a warning factor

REVERBERI the integrated control of public lighting

+ Safety Meteo conditions are a warning factor If foggy you might reduce the luminous flux at minimum level to avoid dazzle to driver or even setting the maximum level in relation to road lighting conditions

REVERBERI the integrated control of public lighting

+ Safety

Meteo conditions are a warning factor:

REVERBERI the integrated control of public lighting

+ Safety

Meteo conditions are a warning factor: In case of snow, dimming is better: if on the road snow increases luminance level, you might avoid dazzle situations

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LTM: WAY OF OPERATION

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PRINCIPIO DI FUNZIONAMENTO

The LTM sensor

Main features of LTM sensor

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The LTM sensor

Main features of LTM sensor IP 66 box where a special videocamera is installed, the recording is analized by a controller with Computer Vision techniques. Power at 230 Vac Installation at 5,5 meters height Visibility of about 200 meters of road

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The LTM sensor

REVERBERI the integrated control of public lighting

LTM Hardware

Intel Atom E680 1Gb DDR2 800MHz RAM 16Gb HDD mSata 4 USB doors Windows Embedded Standard 7 Limited dimensions Consumption < 12W

The LTM sensor

The calculation of luminance

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The LTM sensor

The calculation of luminance The Standard 13201 section 3 provides the possibility to read luminance for sensors intended to systems control adaptive to non regulated heights. Regulatory grid and formulas of the standard are used for the calculation of luminance measure

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The LTM sensor

REVERBERI the integrated control of public lighting

LUMINANCE

 Max 2 measures of luminance:

1 per carriageway, 2 max managed carriageways.

 Measure calculated every

minute

 Luminance evaluated between

0,1 and 7,5 cd/m2

 Measure error < 5% full scale

Development of algorythm in cooperation with I.N.Ri.M. Torino

The LTM sensor

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LUMINANCE

 To perform correct measure of luminance, precise geometrical

configurations are required.

 LTM provides mechanics able to make installation easy and

repeatable

 Angle compared to road: 0°  The system is able to understand presence of vehicles which

might mislead the measure.

 If vehicles are many, the measure is discarded. However, this is

a case of maximum luminance due to high traffic.

The LTM sensor

Calculation of traffic

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The LTM sensor

Calculation of traffic Objects of a certain size that, at night, cross a fictitious line are counted through a technique that analyzes variation with respect to a specific background

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The LTM sensor

REVERBERI the integrated control of public lighting

ALGORITHM TRAFFIC Counting: Max number carriageways: 2 Max number of lanes per carriageways: 3 Max number of lanes: 6

The LTM sensor

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The estimate of meteo conditions The measures of luminance variations allow to detect the possibility of debilitating meteo conditions

La regolazione

The interfacing of LTM with Reverberi and Opera products range

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The setting

The setting

The interfacing of LTM with Reverberi and Opera products range

This is made through a serial cable or in RF to DIM module. LTM communicates a figure for the dimming level that the control system of the light source must implement.

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The commissioning

The Software of configuration

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The commissioning

The Software of configuration The algorythm of dimming level control is inside the LTM. A SW of configuration of parameters, accessible from any PC via WIFI, allows to select area of measure, reading of data and modification of parameters required for setting management of the installation

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The commissioning

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CONFIGURATION

Connection to sensor via WiFi. LTM provides a network to which you can connect. Thanks to remote desktop of windows, control of the system for configuration.

And later?

The future evolutions: Small Target Visibility

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And later?

The future evolutions: Small Target Visibility The Computer Vision is a significant development step, in the future it might detect pedestrians, danger situations o dazzle conditions

REVERBERI the integrated control of public lighting