WO2021246860A1

WO2021246860A1 - System and method for managing streetlights

Info

Publication number: WO2021246860A1
Application number: PCT/MY2020/050196
Authority: WO
Inventors: Roslee Bin MOHD SABRI
Original assignee: Mimos Bhd
Current assignee: Mimos Bhd
Priority date: 2020-06-03
Filing date: 2020-12-08
Publication date: 2021-12-09
Anticipated expiration: 2022-12-03

Abstract

A system (100) for managing a plurality of streetlights (102) comprises a streetlight controller ( 104) coupled to each of the streetlights ( 102) to collect data for controlling the streetlights (102), a networking device (106) in communication with the streetlight controllers (104) to exchange the data over a network (108) and a server (112) in communication with the streetlight controllers (104) over the network (108) to process the data for remote management of the streetlights (102). Each of the streetlight controllers (104) includes a radio frequency (RE) transceiver (216) configured to exchange the data and periodically broadcast and receive a plurality of beacon packets to enable a position of at least one mobile node (118) to be determined. The mobile node (118) is a mobile maintenance unit for local inspection and maintenance of the streetlights (102).

Description

SYSTEM AND METHOD FOR MANAGING STREETLIGHTS

FIELD OF THE INVENTION

The invention relates to a system and method for managing streetlights, and more particularly, to a system and method for remote and local management of location- augmented streetlights.

BACKGROUND OF THE INVENTION

Streetlights are installed along the street or public infrastructure to provide good visibility to vehicles and pedestrians at night ensuring public safety and security. Typical streetlighting systems include luminaries mounted on poles which are electrically connected in a loop powered from a common power supply. The luminaries are visually inspected by one or more maintenance personnel at periodic intervals for detecting faults. This visual inspection must be done at night to detect non-functioning luminaries. However, the manual inspection of each of the luminaries is time and labour consuming and is not reliable as the luminaries may fail shortly afterthe inspection or fail temporarily at specific operating conditions which may not be detected during scheduled inspections. In some instances, in order to minimize time, equipment, labour and costs associated with the periodic inspection and maintenance of all the streetlamps, a group maintenance methodology based on predetermined life expectancy of the luminaires within a selected geographical area is implemented. In this method, the life expectancy of all the luminaries and the associated equipment in the selected geographical area is first estimated and maintenance is scheduled for those nearing the estimated life expectancy. However, this maintenance method may result in the early replacement of properly working luminaires.

Use of energy efficient streetlighting equipment could help reduce the energy consumption of the existing streetlight systems to a great extent. Recently, the use of light-emitting diode (LED) lamps for streetlights has grown significantly. Modem streetlight systems employing LED lamps have considerable advantages in terms of energy efficiency and life span of the luminaires compared to the conventional streetlight systems with high pressure sodium (HPS) or high intensity discharge (HID) lamps. At present, there are several systems and methods in use for the automated management of the LED streetlights. Some streetlighting systems include an automated switching mechanism employing a timer circuit to automatically turn on/off the luminaries at scheduled intervals. Some other streetlighting systems employ photoelectric sensors to turn on the lamps during the night and turn off the lamps during the day. However, there is no fail-safe system to turn on/off the lights or to alert the maintenance personnel if these photo-sensors and timers fail or malfunction.

Modem streetlight systems employ various remote monitoring and control methods for controlling the luminaires. One such method is disclosed in the patent US 9699873 B2 in which the existing streetlights are interconnected to form a mesh network and each light is configured to become a node in the mesh network. Each node includes a power control terminal for receiving electrical power, a light source coupled to the power control terminal, a processor coupled to the power control terminal, a network interface coupled between the processor and the network of lighting systems, and sensors coupled to the processor for detecting a conditions at the node . Each node is further configured to convey information to other nodes and to central locations about the conditions at the nodes. A computing device receives and processes the information collected from the nodes to generate control signals for the remote control of the streetlights. However, the above system and method failed to disclose an emergency action if the processor is faulty or if the communication with the computing device is interrupted.

An alternate system and method for remote monitoring and wireless control of the streetlights is disclosed in the patent US 10085328 B2. The system includes a server connected to a wide area network and having software for configuring, monitoring, and controlling lighting fixtures at a site. The system also includes a wireless gateway at the site communicating with the server via cellular. Wireless devices communicate with the wireless gateway via a mesh network and each wireless device is wired to control at least one streetlight. A user interface can connect to the wide area network and enable a user to access server control software. Control instructions entered on the server by the user interface are communicated from the server to the wireless gateway and to the wireless devices. A user site device may be connected to the site mesh network enabling the user to configure, monitor, and control lighting fixtures at the site. However, the above system and method fails to disclose an emergency action if the communication with the wireless gateway is interrupted.

Another method and apparatus for controlling a streetlight is disclosed in the publication US 20130057158 A1 entitled “GPS-based streetlight wireless command and control system”. The method for controlling a streetlight comprises the step of acquiring GPS data from a GPS coupled to a processor associated with the streetlight. A geographic location of the streetlight is determined from the received GPS data. A real local time is determined from the GPS data and a sunrise and sunset time associated with the geographic location is determined, which is utilized to control on and off state of one or more LED lighting modules of the streetlight. However, the above method requires the use of power-hungry GPS receivers with each of the streetlights. In addition, the above method and apparatus fails to disclose an emergency action if the processor associated with the streetlight is faulty.

Therefore, an aim of the present invention is to provide an energy efficient streetlight system without the use of power-hungry GPS receivers for remote and local control of the streetlights.

SUMMARY OF THE INVENTION

In an aspect of the invention, there is provided a system for managing a plurality of streetlights comprising a plurality of streetlight controllers coupled to respective streetlights to collect data for controlling the streetlights, a networking device in communication with the streetlight controllers to exchange the data over a network and a server in communication with the streetlight controllers over the network to process the data for remote management of the streetlights. Each of the streetlight controllers includes a radio frequency (RF) transceiver configured to exchange the data and periodically broadcast and receive a plurality of beacon packets to enable a position of at least one mobile node to be determined.

In one embodiment, each of the streetlight controllers is further configured to receive the plurality of beacon packets from the at least one mobile node, determine a received signal strength indicator (RSSI) value of the received beacon packets and transfer the RSSI value, GPS coordinates and a unique ID of a streetlight controller to the server to determine the position of the mobile node relative to the streetlight controller. This is advantageous as it does not require power hungry GPS receivers with the streetlight controllers to determine the position of the mobile node.

In one embodiment, the mobile node is a mobile maintenance unit for local inspection and maintenance of the streetlights.

In one embodiment, the streetlight controllers are interconnected to form a mesh network configured to communicate with the server over the network. This is advantageous as the mesh connected streetlight controllers are able to communicate with each other via the mesh network to exchange the data.

In one embodiment, the server comprises a storage unit and at least one processor. The storage unit stores the data including a plurality of electrical parameters, power consumption, On/Off status, uptime and brightness level of each of the streetlights and the RSSI value of the beacon packets obtained from the respective streetlight controllers. The at least one processor is configured to process the data for remote control of the streetlights including On/Off control, adjust the brightness level, reset connection to the network, detect a fault and send alerts upon detecting the fault and determine the position of the at least one mobile node relative to a streetlight controller based on the RSSI value. A display unit associated with the server present the data through a web based graphical user interface (GUI), wherein the web-based GUI is provided with a plurality of interactive controls for controlling the streetlights.

The server is configured to automatically identify faults and generate alerts upon detecting the fault. This is advantageous as the authorized personnel are automatically alerted upon detecting a fault.

Advantageously, the server allows authorized users to remotely control the streetlights using the plurality of interactive controls provided through the web-based GUI. In one embodiment, the system comprises at least one electronic device in communication with the streetlight controllers over a local area network for local control of the streetlights. Advantageously, this helps in the local control of the streetlights if there is no network connectivity to the server.

Advantageously, the electronic device is configured for local setup and control of the streetlight controllers in the absence of network connectivity to the server. In one embodiment, the streetlight controllers are configured to blink the streetlights in a pre-set pattern upon detecting failure of the network. This is advantageous as the maintenance personnel can be easily notified upon failure of the network connectivity to the server. In one embodiment, each of the streetlight controllers includes a switching means configured to switch off a streetlight upon receiving a high output signal from the streetlight controller coupled thereto and switch on a streetlight upon receiving a low or no output signal from the streetlight controller coupled thereto. In one embodiment, the switching means enables manual control of the streetlight using a manually operable switch upon failure of the streetlight controller. Advantageously, this fail-safe mechanism allows the manual control of the streetlights in the event of failure of the streetlight controller coupled thereto. In another aspect of the invention, a method of managing a plurality of streetlights comprises the step of providing a plurality of streetlight controllers coupled to the respective streetlights to collect data for controlling the streetlights, wherein the streetlight controllers are in communication with a networking device to exchange the data over a network. Each of the streetlight controllers has a radio frequency (RF) transceiver configured to exchange the data and periodically broadcast and receive a plurality of beacon packets from at least one mobile node. The method further includes receiving the data and a signal strength indicator (RSSI) value of the received beacon packets at a server through the network, processing the data by the server for remote management of the streetlights and determining a position of the at least one mobile node relative to the streetlight controller by the server for local inspection and maintenance of the respective streetlight.

The step of determining the position of the at least one mobile node further comprises receiving the RSSI value, GPS coordinates and a unique ID of the streetlight controller at the server. The server calculates a distance between the mobile node and the streetlight controller based on the RSSI value using a radio propagation model and performs multi- lateration to determine the position of the mobile node relative to the location of the streetlight controller.

In one embodiment, the server is configured to present the data through a web based graphical user interface (GUI) with a plurality of interactive controls for remote management of the streetlights by an authorised user. Advantageously, this allows remote management of the streetlights over the Internet.

In one embodiment, at least one electronic device is connected to the streetlight controllers over a local area network for local control of the streetlights. This is advantageous as the electronic device can be utilized to control the streetlights from site when there is no network connectivity to the server.

BRIEF DESCRIPTION OF DRAWINGS

It will be convenient to further describe the present invention with respect to the accompanying drawings that illustrate possible arrangements of the invention. Other arrangements of the invention are possible, and consequently the particularity of the accompanying drawings is not to be understood as superseding the generality of the preceding description of the invention.

Figure 1 illustrates a block diagram of a system for managing a plurality of streetlights, according to an embodiment of the invention. Figure 2 is a block diagram illustrating a plurality of components of a streetlight controller of the system shown in Figure 1 according to an embodiment of the invention.

Figure 3 is a block diagram illustrating a plurality of components of a server of the system shown in Figure 1 according to an embodiment of the invention.

Figure 4 illustrates a flowchart of a method for managing the streetlights according to an embodiment of the invention. Figure 5 illustrates a flowchart of a method for determining a position of a mobile node according to an embodiment of the invention.

DETAILED DESCRIPTION OF THE INVENTION With regard to Figure 1 there is illustrated a block diagram of a system 100 for managing a plurality of streetlights 102 according to an embodiment of the invention. The system 100 comprises a plurality of streetlight controllers 104 coupled to respective streetlights 102 to collect data for controlling the streetlights 102, a networking device 106 in communication with the streetlight controllers 104 to exchange the data over a network 108, a server 112 in communication with the streetlight controllers 104 over the network

108 to process the data for remote management of the streetlights 102 and one or more electronic devices 114 in communication with the streetlight controllers 104 over a local area network 110 for local control of the streetlights 102. Each of the streetlight controllers 104 includes a radio frequency (RF) transceiver (not shown) configured to exchange the data and periodically broadcast and receive beacon packets for positioning one or more mobile nodes 118.

In one embodiment, each of the streetlight controllers 104 is further configured to determine a received signal strength indicator (RSSI) value of the received beacon packets from the mobile node 118. The RF transceiver (not shown) of the streetlight controllers 104 transfers the RSSI value, GPS coordinates and a unique ID of a streetlight controller 104 to the server 112 to determine a position of the mobile node 118 relative to the streetlight controller 104. This is advantageous as the streetlight controllers 104 and the mobile nodes 118 do not require power hungry GPS receivers to determine the position of the mobile node 118. In one embodiment, the mobile node 118 is a mobile maintenance unit for local inspection and maintenance of the streetlights 102.

With regard to Figure 2 there is illustrated is a block diagram of the streetlight controller 104 according to an embodiment of the invention. The streetlight controller 104 comprises an electrical connector 202 to connect the streetlight controller 104 to each streetlight 102. The streetlight controller 104 is disposed between a mains power supply and an LED driver of the streetlight 102. Typically, the electrical connector 202 used is a NEMA/ANSI C136 5-pin locking plug, of which the 3 power pins are coupled to the mains AC neutral, live in and live out, while the 2 control pins are coupled to a 2-wire dimming signal circuit 204, which can either be a pulse-width-modulation (PWM) circuit or a digitally addressable lighting interface (DALI). The streetlight controller 104 further includes a DC power supply unit 206 which converts the mains AC input voltage from the mains power supply into a plurality of DC voltages required for proper operation of the streetlight controller 104.

The streetlight controller 104 further includes a microprocessor 208 programmed to collect data including a plurality of electrical parameters, power consumption, On/Off status, uptime and brightness level of each of the streetlights 102. The electrical parameters are determined using a sensing means 210, which measures the input voltage and current drawn by the LED driver and feeds the measured values to the microprocessor 208 via an analog to digital converter. A switching means 218 is coupled to the microprocessor 208 for controlling power delivery to the LED driver, thereby controlling the respective streetlights 102. Typically, the switching means 218 is coupled to the mains AC live in and live out on one end and to the general-purpose input output (GPIO) pin of the microprocessor 208 on another end. The switching means 218 closes the mains AC live in and live out connection, allowing AC power supply to the LED driver, when the output signal from the GPIO control pin is low or when no output is received from the GPIO control pin. Typically, the LED streetlight 102 is switched on when the GPIO pin of the microprocessor 208 outputs a low or no signal. The switching means 218 opens the mains AC live in and live out connection, preventing AC power supply to the LED driver, when the output signal from the GPIO control pin is high, which in turn switches off the respective LED streetlight 102. The streetlight controller 104 utilizes the RF transceiver 216 to exchange the data with the server 112 and the electronic devices 114 through the networking device 106.

In one embodiment, each of the streetlights 102 is coupled to a manually operable switch for external control of the streetlight 102 upon failure of the microprocessor 208 of the streetlight controller 104. This fail-safe design allows the switching means 218 to automatically close the connection between AC mains live in and live out, delivering power to the LED driver, when there is no output signal from the GPIO control pin of the microprocessor 208.

In one embodiment, each of the streetlight controllers 104 includes a timer 212 coupled to the microprocessor 208 for providing timing information to switch ON/OFF the streetlights 102. A memory unit 214 coupled to the microprocessor 208 is configured to store a plurality instructions and configuration parameters of the streetlight controller 104. The configuration parameters include network settings and authentication key of the server 112 and data update rate and options to enable or disable the sensing means 210.

In one embodiment, the plurality instructions stored in the memory unit 214 includes a function which when executed using the microprocessor 208 initializes the streetlight controllers 104 into known default state upon power up and reset. This initialization causes the microprocessor 208 to output a high signal on its GPIO pin that controls the switching circuitry to cause the switching means 218 to switch off the LED streetlight 102 and execute a Webserver program to present the streetlight controller’s 104 configuration webpage when requested by the at least one electronic device 114. The configuration webpage is presented via the web browser launched from the electronic device 114, which is connected to the same LAN as the streetlight controller 104. The initialization of the streetlight controllers 104 further include establishing connection to the server 112 via the network 108. Typically, the server 112 is accessible over the Internet using appropriate data transport protocol. Further execution of the plurality instructions stored in the memory unit 214 initiates periodic measurement of the input voltage and load current of the LED streetlight 102. The periodic measurement further includes the steps of sampling the appropriate ADC inputs and converting the electrical parameters into final values representative of the input voltage and load current of said LED streetlight 102. The final values thus obtained are uploaded to the server 112 for post-processing and storage in a storage unit 302 of the server 112. The microprocessor 208 is further configured to execute a plurality of instructions to initiate periodic upload of the measured RSSI values from the received beacon packets to the server 112. Upon execution of the instructions, the microprocessor 208 initiates periodic upload of the measured streetlamp parameters including uptime in seconds, on/off of the streetlights 102, brightness level of the streetlight 102, etc. to the server 112. The brightness level of the streetlight 102 is represented as a value between 0 to 100, where 0 represents no light and 100 represent full brightness of the streetlight 102. The server 112 is configured to store the received data in a database stored in the storage unit 302.

The plurality instructions stored in the memory unit 214 includes a control function which when executed using the microprocessor 208 enables blinking of the streetlights 102 in a pre-set pattern upon detecting failure of the network 108 connectivity to the server 112. Further execution of the instructions using the microprocessor 208 enables switching on and off the LED streetlight 102 following certain blinking patterns upon failure of the network 108 connectivity with the server 112. Upon failure of the network 108, authorized users can also log into the configuration webpage of each of the streetlight controllers 104 via the electronic device 114 to either switch off or on the respective streetlight 102, adjust its brightness level or reset the network connection to re-establish connectivity to the server 112.

The plurality instructions stored in the memory unit 214 includes a positioning function which when executed using the microprocessor 208 helps to determine a position of the mobile node 118. Execution of the instructions further causes the RF transceiver 216 to periodically broadcast beacon packets containing the streetlight controller’s GPS coordinates and a unique ID. The RF transceiver 216 is configured to listen for beacon packets broadcasted by compatible mobile nodes 118 within a radio coverage area of the streetlight controller 104. Upon receiving beacon packets, the streetlight controller 104 measures the RSSI values of the plurality of received beacon packets. The streetlight controller 104 parse the beacon parameters and upload the RSSI values and GPS coordinates of the streetlight controller 104 to the server 112. The server 112 processes the received data to determine and to provide positioning information to the mobile nodes 118.

In one embodiment, the RF transceiver 216 is only provided with certain selected streetlight controllers 104 and the positioning function is reserved for those streetlight controllers 104 that are equipped with the RF transceiver 216 and employ wireless communication technologies for data connectivity. Typically, the data connectivity between the streetlight controllers 104 and the server 112 is established based on Message Queuing Telemetry Transport (MQTT) protocol, whereby the server 112 implements the MQTT broker functionality, while the streetlight controllers 104 implement the MQTT client functionality.

Figure 3 is a block diagram illustrating a plurality of components of the server 112 according to an embodiment of the invention. The server 112 includes a storage unit 302 to store the data including a plurality of electrical parameters, power consumption, On/Off status, uptime and brightness level of each of the streetlights 102 and the RSSI value of the beacon packets obtained from the respective streetlight controllers 104. At least one processor 304 associated with the server 112 is configured to process the data for remote control of the streetlights 102 including On/Off control, adjust the brightness level, reset connection to the network 108, automatically set off alarms when faults are detected, send alerts upon detecting the fault and automatically clear off the alarm once the detected faults have been resolved.

The processor 304 is further configured to determine the position of the at least one mobile node 118 relative to the streetlight controllers 104 based on the RSSI value. The server 112 further includes a display unit 306 to present the data through a web based graphical user interface (GUI) 116, wherein the web-based GUI 116 is provided with a plurality of interactive controls for controlling the streetlights 102. A networking means 308 associated with the server 112 enable wired or wireless communication to the networking device 106 over the network 108. In certain instances, the networking means 308 enable communication with external systems over the Internet to alert users through email, Twitter, SMS, etc. of the faults and to provide status updates of plurality of streetlight controllers 104.

Figure 4 illustrates a flowchart of a method for managing the streetlights 102 according to an embodiment of the invention. The method of managing the plurality of streetlights 102 comprises the first step 402 of providing a streetlight controller 104 coupled to each of the streetlights 102 to collect data for controlling the streetlights 102 and a networking device 106 in communication with the streetlight controllers 104 to exchange the data over a network 108. The streetlight controller 104 includes a radio frequency (RF) transceiver 216 configured to exchange the data and periodically broadcast and receive beacon packets from at least one mobile node 118. The method further comprises the steps of receiving the data and a signal strength indicator (RSSI) value of the received beacon packets at a server 112 through the network 108, as in block 404 and processing the data for remote management of the streetlights 102 as in block 406. The method further includes a step of determining a position of the at least one mobile node 118 relative to the streetlight controller 104 for local inspection and maintenance of the streetlights 102, as in block 408.

Figure 5 illustrates a flowchart of a method for determining a position of the mobile node 118 according to an embodiment of the invention. The method of determining the position of the at least one mobile node 118 further comprises the steps of receiving the RSSI value, GPS coordinates and a unique ID of the streetlight controller 104 at the server 112 as in block 502, calculating a distance between the mobile node 118 and the streetlight controllers 104 based on the RSSI value using a radio propagation model as in block 504 and performing multi -lateration to determine the position of the mobile node 118 relative to the location of the streetlight controllers 104 as in block 506. It will be appreciated by persons skilled in the art that the present system and method for managing the streetlights may also include additional control devices which does not affect the overall functioning of the present system or method.

Claims

1. A system (100) for managing a plurality of streetlights (102) comprising: a plurality of streetlight controllers (104) coupled to respective streetlights (102) to collect data for controlling the streetlights (102); a networking device (106) in communication with the streetlight controllers

(104) to exchange the data over a network (108); and a server (112) in communication with the streetlight controllers (104) over the network ( 108) to process the data for remote management of the streetlights ( 102); characterized in that each of the streetlight controllers (104) includes a radio frequency (RF) transceiver (216) configured to exchange the data and periodically broadcast and receive a plurality of beacon packets to enable a position of at least one mobile node (118) to be determined.

2. The system (100) of claim 1 wherein each of the streetlight controllers (104) is further configured to: receive the plurality of beacon packets from the at least one mobile node

(118); determine a received signal strength indicator (RSSI) value of the received beacon packets; and transfer the RSSI value, GPS coordinates and a unique ID of a streetlight controller (104) to the server (112) to determine the position of the mobile node (118) relative to the streetlight controller (104).

3. The system (100) of claim 1 wherein the mobile node (118) is a mobile maintenance unit for local inspection and maintenance of the streetlights (102).

4. The system (100) of claim 1 wherein the streetlight controllers (104) are interconnected to form a mesh network configured to communicate with the server (112) over the network (108).

5. The system (100) of claim 1 wherein the server (112) comprises: a storage unit (302) to store the data including a plurality of electrical parameters, power consumption, On/Off status, uptime and brightness level of each of the streetlights (102) and the RSSI value of the beacon packets obtained from the respective streetlight controllers (104); at least one processor (304) configured to: process the data for remote control of the streetlights (102) including On/Off control, adjust the brightness level, reset connection to the network (108), detect a fault and send alerts upon detecting the fault; and determine the position of the at least one mobile node (118) relative to a streetlight controller (104) based on the RSSI value; and a display unit (306) to present the data through a web based graphical user interface, GUI (116), wherein the web-based GUI (116) is provided with a plurality of interactive controls for controlling the streetlights (102).

6. The system (100) of claim 1 further comprising at least one electronic device (114) in communication with the streetlight controllers (104) over a local area network (110) for local control of the streetlights (102).

7. The system (100) of claim 6 wherein the electronic device (114) is configured for local setup and control of the streetlight controllers (104) upon failure of the network (108).

8. The system (100) of claim 1 wherein the streetlight controllers (104) are configured to blink the streetlights (102) in a pre-set pattern upon detecting failure of the network (108).

9. The system (100) of claim 1 wherein each of the streetlight controllers (104) includes a switching means (218) configured to: switch off a streetlight (102) upon receiving a high output signal from the streetlight controller (104) coupled thereto; and switch on a streetlight (102) upon receiving a low or no output signal from the streetlight controller (104) coupled thereto. 10. The system (100) of claim 9 wherein the switching means (218) enables manual control of the streetlight (102) using a manually operable switch upon failure of the streetlight controller (104) coupled thereto.

11. A method of managing a plurality of streetlights (102) comprising: providing (402) a plurality of streetlight controllers (104) coupled to the respective streetlights (102) to collect data for controlling the streetlights (102), wherein the streetlight controllers (104) are in communication with a networking device (106) to exchange the data over a network (108), wherein each of the streetlight controllers (104) has a radio frequency, RF transceiver (216) configured to exchange the data and periodically broadcast and receive a plurality of beacon packets from at least one mobile node (118); receiving (404), at a server (112) through the network (108), the data and a signal strength indicator, RSSI value of the received beacon packets; processing (406), by the server (112), the data for remote management of the streetlights (102); and determining (408), by the server (112), a position of the at least one mobile node (118) relative to a streetlight controller (104) for local inspection and maintenance of the respective streetlight (102).

12. The method of claim 11 wherein the step of determining the position of the at least one mobile node (118) further comprises: receiving (502), at the server (112), the RSSI value, GPS coordinates and a unique ID of the streetlight controller (104); calculating (504) a distance between the mobile node (118) and the streetlight controller (104) based on the RSSI value using a radio propagation model; and performing (506) multi-lateration to determine the position of the mobile node (118) relative to the streetlight controller (104).

13. The method of claim 11 wherein the server (112) is configured to present the data through a web based graphical user interface, GUI (116) with a plurality of interactive controls for remote management of the streetlights (102) by an authorised user. 14. The method of claim 11 wherein at least one electronic device (114) is connected to the streetlight controllers (104) over a local area network (110) for local control of the streetlights (102).