Renesas’s Integrated Context Engine (ICE) for City Illumination features secure wireless mesh communication with a user interface for cloud-enabled lighting control environments. With its 6LoWPAN open standard stack that communicates natively with IPv6 (internet protocol) over IEEE 802.15.4 radio links, the ICE reliably handles the local data exchange between the wireless gateway and luminaire control nodes within the network. The ICE for City Illumination connects light points from anywhere in the world to a simple and user-friendly control and management environment.

Addresses Challenges of Installing and Maintaining Complex Intelligent Lighting Systems

Installation and commissioning

With the emergence of LED-based outdoor, area and street luminaires, this intelligent lighting system protects the environment and helps public and private organizations and municipalities save on lighting costs. The ICE for City Illumination is available in two offerings (On/Off and On/Off/Dimming) and simply connects to the widely adopted NEMA 7 pin connector of the LED luminaire. Installation is as simple as replacing the existing daylight sensor with the new ICE control node. No other connections or rewiring is necessary. After scanning the barcode with any GPS-enabled mobile device, the newly installed node can be controlled from anywhere in the world by using encrypted security credentials.

Figure 1: ICE for City Illumination

Expansion and integration

The ICE for City Illumination open standard 6LoWPAN wireless mesh network is ideal for outdoor communication and can easily expand to other systems, such as asset tracking, parking management, and other services. If a firmware upgrade becomes necessary due to feature expansion, for example, a seamless over-the-air (OTA) update feature eliminates the need for dispatching the maintenance crew and does not require special skills or training from the staff.

6LoWPAN enables transmission of IPv6 over IEEE 802.15.14 radio links by adding an adaptation layer between the data link layer and network layer of the open systems interconnect (OSI) model. With IPv6, 3.4*1038 unique addresses are available to cover the tens of billions of connected devices to come.

Figure 2: ICE for City Illumination functional block diagram

Advantages of 6LoWPAN for Intelligent City Illumination

From a small local sensor network used for monitoring several points of use to a mesh network spanning many kilometers in range, 6LoWPAN excels in low overhead ultra-low power (using UDP) data routing to worldwide use in the Sub-1 GHz frequency bands.

Enhanced signal propagation

As an open standard, 6LoWPAN is closer to full interoperability with other manufacturer devices and builds on top of existing IP communication networks. Renesas modules utilize Sub-1 GHz frequency bands for better signal propagation (rather than the crowded 2.4 GHz band) and support large mesh network topology for long range with very low power consumption.

Comparison to other wireless protocols

Network protocols such as LoRa, Zigbee and Z-wave must be managed properly in case application layer changes are not updated seamlessly through the entire end device to the network. When connecting these devices to the Internet, a high degree of skill and knowledge is required to develop the system from the ground up, as well as make necessary changes to the application layer.

While there are vast amounts of IoT hardware building blocks available in the market, many solutions labeled as “turnkey” are proprietary networks. These require data subscription fees that quickly become cost-prohibitive. The ramp up to develop the system and application firmware with these solutions are steep and require dedicated resources and open-ended time allocation. The ICE for City Illumination wireless control network has no hidden fees or subscriptions.

ICE for City Illumination Features and Benefits

  • Easy retrofit of existing street lights: Plug in street light control dome with NEMA 7 pin JL-241J base for JL-240 receptacle 
  • 6LoWPAN self-healing mesh network radio 
  • 128-bit encryption 
  • Function control via cloud service: 
    • ICECIL-E: On/off 
    • ICECIL-A: On/off, 0V to 10V dimming 
    • ICECIL-D2: On/off, 0V to 10V and Dali 2 dimming 
  • Status feedback 
  • Input voltage: 85VAC to 480VAC (50/60 Hz) 
  • Supply current: up to 15A at 480VAC 
  • Overvoltage protection 
  • Lamp switching relay: Normally closed (lamp is on by default) 
  • Integrated photo sensor for legacy support 
  • IP65 
  • Dome house: Diameter 84mm; Height 97.8mm 
  • Integrated antenna inside the dome 
  • Range up to 1000m 
  • 2D barcode label containing MAC address 
  • Seamless cloud integration 
  • Very easy to commission with mobile application 
  • Fully loaded API for city automation control infrastructure systems 
  • Grouped scheduling 
Orderable Part Number Description
ICECIL-E-EVK 6LoWPAN wireless light control dome with NEMA JL-241J base with on/off function.
ICECIL-A-EVK 6LoWPAN wireless light control dome with NEMA JL-241J base with on/off and 0-10VDC analog dimming function.
ICECIL-D2-EVK 6LoWPAN wireless light control dome with NEMA JL-241J base with on/off, 0-10VDC analog and Dali 2 dimming function.

Contact Renesas for more information on the ICE for City Illumination products.