Off-Grid Solar-Powered AI Surveillance Tower

Overview

The Redcoast RC-SCT-300 Off-Grid Solar-Powered AI Surveillance Tower is a fully self-contained video monitoring station for locations that have neither reliable grid power nor fixed network cabling. It combines a high-resolution day/night camera payload, an on-board edge-AI gateway, a Redcoast-designed solar power-management PCB, LiFePO4 energy storage and multi-carrier cellular backhaul on a single galvanized pole or telescopic mast. Built for governments, industrial parks, system integrators and infrastructure operators, it solves the core pain of remote-site security: how to watch a perimeter, a construction lay-down yard, a substation, a border road or a pipeline corridor when there is no power socket within kilometres. Because Redcoast develops its own boards and platform software in-house, the tower is delivered as a tuned hardware-plus-software system rather than a bag of third-party parts bolted together.

Key Features

• True off-grid autonomy — solar array plus LiFePO4 storage sized for 5–7 days of operation through cloudy weather, with no mains connection required.
• Redcoast-designed power-management PCB — MPPT solar charging, battery protection, load scheduling and remote power telemetry on a single custom board, optimised for surveillance duty cycles.
• Edge-AI gateway — on-board human/vehicle classification and intrusion-line detection that filters false alarms (wind, animals, shadows) before they ever consume cellular bandwidth.
• Multi-carrier 4G/5G backhaul — dual-SIM with automatic carrier failover; optional LoRa/NB-IoT for low-bandwidth status telemetry.
• Bandwidth-aware recording — local NVR storage with event-triggered upload, so footage is preserved even during network outages.
• Flexible payloads — fixed 4K bullet, PTZ with optical zoom, or thermal/visible bi-spectrum camera options.
• Rapid deployment — fixed 6 m pole, 9 m mast or telescopic/trailer variants for temporary sites.
• IP66 outdoor enclosure with anti-corrosion coating for coastal, desert and high-humidity environments.
• Remote management via Redcoast web platform and mobile app: live view, PTZ control, power status, geofencing and OTA updates.
• Tamper and theft protection — door sensors, accelerometer-based tilt/impact alarms and GPS tracking.

Technical Architecture

The system is organised around three Redcoast-built subsystems working together. First, the power subsystem: a monocrystalline solar array feeds the custom power-management PCB, which performs MPPT charge control, multi-stage LiFePO4 protection (over-charge, over-discharge, over-current, temperature cut-off) and intelligent load shedding. During prolonged low-sun periods the board can throttle non-critical loads (for example reducing PTZ patrols or frame rate) to protect camera uptime, and it reports state-of-charge, panel voltage and load current back to the platform.

Second, the edge-AI gateway ingests the camera RTSP streams, runs object detection and classification locally, and writes continuous or event-based recordings to local storage. By making the decision "is this a person/vehicle crossing the line?" at the edge, the tower transmits only meaningful clips and metadata, which is essential when the only link is metered cellular. Third, the connectivity subsystem manages dual-SIM cellular with automatic failover, optional Ethernet/PoE for adding cameras, and a low-power telemetry channel for health data. Data flow is therefore split: heavy video stays local and is pulled on demand, while lightweight events and device health stream continuously to the cloud. This edge/cloud split is what keeps an off-grid tower both responsive and power-frugal.

Connectivity & Power

For connectivity, the standard configuration is dual-SIM 4G LTE with 5G as an option for high-resolution multi-camera sites; carriers fail over automatically so a single network outage does not blind the site. LoRa or NB-IoT can be added purely for status telemetry where video backhaul is handled separately or stored locally. For power, the array is typically 120–600 W of monocrystalline panels paired with 100–600 Ah of LiFePO4 storage, sized against local irradiance and the chosen camera payload. Grid-tie and wind-solar hybrid inputs are available where partial infrastructure exists, giving a redundant supply for mission-critical perimeters.

Protection & Reliability

The electronics enclosure is rated IP66 against dust and heavy rain, with conformal-coated boards and an anti-corrosion finish suitable for salt-fog coastal sites. The tower operates from -30 °C to +60 °C and is engineered for wind loading appropriate to its mast height, with foundation and guy-wire options for high-wind zones. LiFePO4 chemistry is chosen for its wide temperature tolerance and long cycle life (2000+ cycles), which keeps battery replacement intervals long in hard-to-reach locations. Tamper sensors, tilt/impact detection and GPS tracking protect the asset itself, while OTA firmware keeps the AI models and security patches current without a site visit.

Application Scenarios

• Remote perimeter and border roads — autonomous towers watch long, unpowered boundaries and stream intrusion events back to a control room, where running cable or grid power is impractical.
• Construction and infrastructure sites — temporary trailer/telescopic towers protect plant, fuel and materials at lay-down yards during the build phase, then relocate.
• Electrical substations and utility assets — fixed towers monitor unmanned substations, water-treatment sites and pumping stations for intrusion and equipment tampering.
• Pipeline, rail and corridor monitoring — a chain of towers covers linear assets across terrain with no fixed network.
• Quarries, mines and laydown logistics — dust-tolerant towers oversee access roads and weighbridges in harsh, dusty conditions.
• Smart parks and campus perimeters — towers extend surveillance to car parks, back fences and outer zones beyond the reach of building wiring.

Case-style Examples

Remote substation perimeter (off-grid fixed deployment): an operator needed intrusion detection at a cluster of unmanned substations with no spare grid capacity for cameras. A 9 m mast configuration with a 4K PTZ payload, 400 W array and 300 Ah LiFePO4 bank delivered round-the-clock coverage; edge-AI line-crossing detection cut nuisance alerts so the control room only handled genuine events.

Construction laydown yard (temporary relocatable deployment): a contractor protecting fuel and plant on a multi-phase project used telescopic trailer towers that could be towed between active zones. Dual-SIM 4G with local NVR storage meant theft-attempt footage was retained even when one carrier dropped, and the units were redeployed three times across the project life.

Coastal port boundary (harsh-environment deployment): for a salt-fog quayside perimeter, conformal-coated boards, an IP66 enclosure and anti-corrosion mast finish were specified, with bi-spectrum thermal/visible cameras to maintain detection through sea haze and at night.

Customization & Selection Guide

Start with the payload: fixed 4K bullet for static choke points and lowest power; PTZ with optical zoom for wide-area patrol; bi-spectrum thermal for low-visibility or long-range detection. Next size power against local sun-hours and desired autonomy — budget-led sites take 120–200 W panels with 100–200 Ah storage, while mission-critical perimeters take 400–600 W with 400–600 Ah plus hybrid input. Choose the mast: 6 m pole for parks/campuses, 9 m for wide perimeters, telescopic/trailer for temporary or relocatable use. Finally pick backhaul: dual-SIM 4G is the default; add 5G for multi-camera high-resolution sites and LoRa/NB-IoT where only telemetry is needed. Redcoast tunes board firmware and power scheduling to the final configuration.

Deployment & After-sales

Fixed towers install on a concrete foundation or ground screws; telescopic/trailer variants are tow-and-deploy with no civil works. Each tower ships pre-integrated, commissioned and provisioned to the Redcoast platform so it connects on power-up. Delivery timelines scale with customisation depth — standard configurations ship faster, while bespoke PCB or payload changes add board/firmware lead time, all confirmed per project. After-sales covers a hardware warranty, OTA firmware and AI-model updates, remote diagnostics through the platform, and spare-parts support.

Standards & Compliance

Designed toward CE and RoHS conformity, IP66 ingress protection, IK-rated impact resistance on the enclosure, and IEC-aligned practice for the solar charging and LiFePO4 battery management. Camera and cellular modules are selected to meet regional radio and EMC requirements for the destination market.

Why Redcoast

Redcoast designs the power-management PCB, integrates the edge-AI gateway and develops the web and mobile management platform in-house. That means power scheduling, AI tuning, telemetry and the user app are engineered as one system — and the board can be re-spun for unusual payloads, voltages or sensor mixes. We are a custom hardware developer, not a reseller of off-the-shelf kits, which lets us match the tower to your exact site, climate and network reality.

Contact Redcoast to specify your site conditions, payload and autonomy targets, and we will configure — or custom-develop — an off-grid surveillance tower for your project.