Electronic Signage

The Complete integrated message and status system.

The Sign control system is a modular system based around an inhouse S2J created board that can control a variety of LED functionality in various format and configurations.

A use case, Western Australia have a requirement, needing electronic Fire Danger Rating signs.

NZ Based FDR

A 4 colour zoned LED displaying Green (Moderate), Yellow (High), Orange (Extreme) and Red (Catastrophic) with a two-line full graphic LED matrix 128x64. When no FDR rating is available, or no warning is currently active then no FDR zones are lit and a white bar is displayed. The FDR rating is automatically updated from BOM every morning at a configurable time, based on the zone setting for the display.
More lines can be accommodated to the text LED area or simplification by completely removal of the text, based on the customers’ requirements.
Due to the modular nature of the unit any configuration can be achieved
with minimal additional costs involved as the requirements for
the change is a matter of changing the Front Silkscreen image and internal mounting holes if the end requirements fit into the same chassis footprint.

We can also offer an extended version with an additional matrix sign that is attached below the main sign to display community related messages or even commercial messages.

Enclosure, Silkscreen, Covering and Colours

Each FDR sign comprises of a lockable hinged cabinet with various holes cut on the front for the LED displays, air flow heat management louvered holes on the
side/bottom with insect mesh on any exposed holes and a few cable-holes to the Solar and antennas.
Behind the front panel is a 6mm Polycarbonate sheet to protect against high-speed objects and environment ingress.
The cabinet comprises of 3mm Powder coated aluminum with a coating of Armor Guard or similar anti-graffiti coating.
The Polycarbonate has a layer of anti-graffiti film to allow for easy clean and or replacement.

Safety

The display features continuous monitoring of light levels – and will adjust the brightness of the LEDs accordingly to avoid blinding on-coming traffic. The columns holding the display case have a frangible column design with a slip base design. On impact the column will fail at ground level and allow the case to topple over the vehicle as it passes underneath. The display also continuously monitors both the internal and external temperatures – and will shut down the LEDs when temperatures exceed the battery safe operating temperature range to prevent thermal run-away of the batteries. It will also shut down the cooling FANs when external temperatures exceed internal temperatures (like in the event of a passing fire front) to avoid sucking hot air into the case.

Remote Management and Monitoring

Displays are remotely managed via a web site. The web site allows the owner of the sign to:

Set a few messages to display in the text area
Set a start and end date for messages so that they are only displayed within the date window defined.
Monitor the battery state of charge, the solar panel performance, and thermal levels.
Messages and control can also be updated via a REST API, an RSS feed, and other means.
Set the Indicator to show depending on a third party set of data. For example Setting the FDR level based on Met service fire index or Set water level indicator based on remote damn level
Override the Automatic Indicator to manually set a level

Technical Specifications

Display	Up to 8 Full Colour LED control 45W per colour	Communication	LTE Cat1 Cat 1 bands supported: 1, 3, 7, 8, 20, 28A
	Full Colour Matrix LED display max Pixels 160x16		2G and 3G fallback (900, 1800, and 2100 MHz)
Optional display	Full Colour Matrix LED display max Pixels 160x48 5000lux @ 1m		ARM Cortex-M4F 32-bit processor @ 64MHz 1MB flash, 256KB RAM ARM TrustZone CryptoCell-310 Cryptographic and security module
Solar	380W Monocrystalline panel MPPT Solar battery charger with telemetry	Environment Telemetry	Temperature, Humidity, Barometer and Light levels. Thermal control fan assisted with Fire cut off detection
Battery	100AH LiFePO4 25.6v Battery with BMS protection. 3800mA Backup battery for continued monitoring.	Optional Satellite connectivity	Bidirectional Swarm connectivity 137-138 MHz (downlink) 148-150 MHz (uplink)
Power subsystem	Main power is 25.6v Sub power is 5v	Optional External control	Controllable External light to help illuminate the sign or surrounding area. Require additional Power source and lighting.
Operating Temperature	-20°c to +65°c	Mobile Subscription	Mobile network access is via an embedded eSim. It supports several different operators (Telstra & Optus). Subscription is via S2J Pty Ltd.
Dimensions(mm)	W:1800 X H:1300 X D:150	Opt Dim(mm)	W:1800 X H:700 X D:150