{"id":11036,"date":"2018-11-27T21:46:01","date_gmt":"2018-11-27T20:46:01","guid":{"rendered":"http:\/\/www.nablaquadro.it\/?page_id=11036"},"modified":"2023-09-28T13:15:31","modified_gmt":"2023-09-28T11:15:31","slug":"sky-light-intersection-system","status":"publish","type":"page","link":"https:\/\/www.nablaquadro.it\/en\/sky-light-intersection-system\/","title":{"rendered":"Sky Light Intersection System"},"content":{"rendered":"

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Sky Light Intersection System is the solution to regulate red and green light timing length<\/strong> based on real-time traffic conditions.<\/p>\n

Wireless sensors are installed in the road and collect data continuously, then send them to the traffic regulator via radio, without any wiring work. This system is an efficient wireless replacement to inductive loops<\/strong>.<\/p>\n

Thanks to its optical detection technology, Sky Light Sensor is more precise than inductive loops and magnetic sensors<\/strong>, especially in heavy traffic conditions, when vehicles are very close to one another in a stop and go situation.<\/p>\n

A controller adapts traffic light phases according to the real-time traffic situation to reduce traffic congestion and improve the flow<\/strong> of vehicles<\/strong>.<\/p>\n

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Sky Light Sensor <\/strong>can detect vehicles. The sensors send data to a board called Sky Light Hub <\/strong>in real-time. To replicate the operation of inductive loop systems, a board has been specifically designed. It is called Sky Light Interface Card <\/strong>, and it is placed inside the traffic light controller cabinet. Sky Light Hub is integrated directly into this board and it transfers traffic data through a UART serial port. D<\/strong>ata are transferred to the traffic light controller directly, using opto-isolated dry contacts.<\/p>\n

Besides data transmission to the regulator, this system can be adapted for different uses.<\/p>\n

It is possible to signal to the regulator that a vehicle is at the stop line waiting for the signal to turn green, configuring the system in “presence” mode<\/strong>. This operation is similar to pedestrian call buttons.<\/p>\n

Another application of Sky Light Intersection System is queue length measurement<\/strong>. Placing the sensors at different distances from the intersection, it is possible to measure the length of the queue formed by vehicles waiting for the green light.<\/p>\n

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COMPONENTS<\/h3>\n

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It\u2019s a solid, accurate wireless sensor. It is designed to resist the stress of heavy traffic on the roads and of weather conditions.
\nSky Light Sensor works with a combination of three detection technologies<\/strong>, coming from a patented ambient light sensor, an infrared sensor and a magnetic sensor. A strong algorithm guarantees extreme accuracy and eliminates possible errors.
\nWireless<\/strong> communication offers a great flexibility in choice of location and layout.
\nMaintenance and installation operations<\/strong> will be quick and easy, using common construction tools. Interrupting the traffic flow completely is not necessary. This is thanks to an additional external case where the sensor is placed.
\nSky Light Sensor is powered by a long life battery<\/strong>. If it starts to run out after several years of intense use, Nabla Quadro offers a battery replacement service<\/strong> to guarantee the longest product life.<\/p>\n

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Sky Light Hub is a radio receiver and coordinator <\/strong>to acquire data from the sensors.
\nIt is a very small component<\/strong> (39mm x 29mm) and it is able to handle up to 16 sensors.
\nInformation about traffic, such as start and end timestamp, is available through a UART serial port.<\/strong>
\nIn the configuration proposed, Sky Light Hub is integrated inside the Access Point, so to send traffic data to a server directly. But, it is possible to use different devices to acquire data from the hub<\/strong>. This enables the creation of a very flexible system where integrators and users can decide to use their preferred devices.
\nIntegrating our system with components from other providers is extremely simple<\/strong>, thanks to transmission and decryption protocols available to users.<\/p>\n

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Sky Light Interface Card is a 16-channel dry contact board <\/strong>that has a specific slot for the integration of Sky Light Hub.
\nThe events coming from the sensors are inputs to open\/close opto-isolated contacts, exactly like inductive loop systems.
\nChannels are independent from one another and are marked with numbers from 1 to 16. All the events detected by one sensor generate a transition on the corresponding contact. The action associated to an event is set through the configuration software included in the system<\/strong>.
\nA group of sensors can be associated to an auxiliary output that reacts to a combination of events. For example, you can set a logical OR of two or more sensors to create a wider virtual inductive loop<\/strong>)
\nThe Interface Card has two contacts for diagnosis purposes, in order to communicate possible faults of the sensors and possible interruption of power supply.
\nThe system can be powered by any kind of continuous power supply with a voltage between 10 V and 26 V, thanks to its DC-to-DC converter.
\nThe total electrical absorption is around 60 mA (hub included).<\/p>\n

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Managing phases of the traffic signal controller according to real-time traffic conditions, both for single signals or to coordinate more traffic lights<\/p>\n

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<\/span><\/span><\/span><\/span><\/div><\/div>
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Measurement of the length of the queue in each arm of the intersection<\/p>\n

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Using data to plan road works, new infrastructures or an alternative mobility management<\/p>\n

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PROJECTS<\/h3>\n<\/div>\n<\/div>\n

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<\/span> <\/div>
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\"Smart <\/div>
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Smart City Trento <\/div>

Trento has been one of the first cities to test Sky Light technology …<\/p>\n<\/div> <\/div> <\/div> <\/div>

\"Smart <\/div>
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Smart Cities Test Plant <\/div>

In Bologna one of the biggest test plant has been installed …<\/p>\n<\/div> <\/div> <\/div> <\/div>

\"Smart <\/div>
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Smart City tests at CNR BO <\/div>

The Smart Services Cooperation Lab in Bologna …<\/p>\n<\/div> <\/div> <\/div> <\/div>

\"Traffic <\/div>
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Traffic lights in Rome <\/div>

The system has been installed by Citelum, one of the most …<\/p>\n<\/div> <\/div> <\/div> <\/div>

\"Traffic <\/div>
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Tram at a junction in Padova <\/div>

A test to detect trains approaching a traffic light<\/p>\n<\/div> <\/div> <\/div> <\/div>

\"Traffic <\/div>
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<\/div> <\/div> <\/div> <\/div> <\/div>
Tram detection in Rome <\/div>

In November 2014 Nabla Quadro and Roma Servizi per la Mobilit\u00e0 started…<\/p>\n<\/div> <\/div> <\/div> <\/div>

\"Traffic <\/div>
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<\/a>
<\/div> <\/div> <\/div> <\/div> <\/div>
Train priority in Rome <\/div>

This installation has been completed in June 2015 with Roma Servizi per la Mobilit\u00e0 srl…<\/p>\n<\/div> <\/div> <\/div> <\/div>

\"Traffic <\/div>
<\/a>
<\/a>
<\/div> <\/div> <\/div> <\/div> <\/div>
Smart traffic lights in Rome <\/div>

Sky Light Intersection System has been installed in via Nomentana<\/p>\n<\/div> <\/div> <\/div> <\/div>

\"Traffic <\/div>
<\/a>
<\/a>
<\/div> <\/div> <\/div> <\/div> <\/div>
Sensors vs loops in Genova <\/div>

A comparison between two technologies for traffic light control<\/p>\n<\/div> <\/div> <\/div> <\/div>

\"Truck <\/div>
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Truck monitoring in Este <\/div>

Urban access regulation needs traffic data to …<\/p>\n<\/div> <\/div> <\/div> <\/div>

\"Traffic <\/div>
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Traffic monitoring in L'Aquila <\/div>

A big project on traffic monitoring on the …<\/p>\n<\/div> <\/div> <\/div> <\/div>

\"Traffic <\/div>
<\/a>
<\/a>
<\/div> <\/div> <\/div> <\/div> <\/div>
Traffic at the shopping mall <\/div>

Traffic data are useful to understand how many visitors…<\/p>\n<\/div> <\/div> <\/div> <\/div>

\"Traffic <\/div>
<\/a>
<\/a>
<\/div> <\/div> <\/div> <\/div> <\/div>
Traffic in Castel Romano <\/div>

Our first test plant for traffic monitoring<\/p>\n<\/div> <\/div> <\/div> <\/div>

\"Traffic <\/div>
<\/a>
<\/a>
<\/div> <\/div> <\/div> <\/div> <\/div>
Traffic in San Benedetto <\/div>

Traffic monitoring with LoRaWAN sensors<\/p>\n<\/div> <\/div> <\/div> <\/div> <\/div> <\/div> <\/div> <\/div> <\/div> <\/div><\/div>[\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text]<\/p>\n

[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n","protected":false},"excerpt":{"rendered":"

[vc_row][vc_column css=”.vc_custom_1415431651567{margin-top: -30px !important;}”][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text] COMPONENTS [\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column width=”1\/3″][vc_single_image image=”11029″ img_size=”full” alignment=”center”][vc_raw_html]JTNDaDQlMjBzdHlsZSUzRCUyMnRleHQtYWxpZ24lM0FjZW50ZXIlM0IlMjAlMjIlM0VTS1klMjBMSUdIVCUyMFNFTlNPUiUzQyUyRmg0JTNFJTBB[\/vc_raw_html][vc_column_text] It\u2019s a solid, accurate wireless sensor. 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