SMART HOME AI & IOT

S5-SHB Agent Framework

The proposed S5-SHB-Agent addresses these gaps through a three-layered architecture:

• Control Plane: Manages external interfaces and enforces governance policies. It features a tiered preference model (4 tiers from routine adjustments to immutable safety thresholds) and a multi-model LLM router.
• Agent Intelligence Layer: Coordinates 10 specialized AI agents (Safety, Security, Comfort, Energy, Privacy, Health, NLU, Anomaly, Arbitration, Maintenance) using interchangeable Large Language Models (LLMs) with tier-constrained provider assignment. It includes a four-level conflict resolution cascade.
• Device & Data Layer: Abstracts IoT hardware and provides blockchain-anchored trust. An adaptive Proof-of-Work blockchain adjusts mining difficulty based on transaction volume and emergency conditions. Ed25519 digital signatures and Merkle tree anchoring ensure tamper-evident auditability.

The framework supports multi-mode deployment (simulation, real, hybrid) with a unified orchestration layer for flexible evaluation and operation.

Key Evaluation Findings

Rigorous evaluation confirms the S5-SHB-Agent's effectiveness and reliability:

• Governance Model: Resident governance correctly separates adjustable comfort priorities from immutable safety thresholds across all tested configurations. Tier 2 trade-off sliders dynamically adjust agent priorities.
• Adaptive Consensus: Adaptive PoW commits emergency blocks in under 10ms, significantly faster than static baselines. It dynamically adjusts difficulty based on transaction volume, conserving resources during idle periods and accelerating during emergencies.
• Multi-Agent System: Across four interchangeable LLM variants, the multi-agent system sustains 100% decision acceptance with agent confidence consistently above 0.82 under both normal and threat operating conditions.
• System Validation: Demonstrated consistent decision quality and blockchain integrity even under threat injections, confirming the robustness of the layered architecture.

Comparison with Existing Frameworks

The S5-SHB Agent outperforms existing blockchain-IoT solutions by addressing critical, previously unmet requirements for Society 5.0:

Specifically, S5-SHB Agent's emergency block commit time of <10ms significantly surpasses distributed platforms like IOTA (220ms), demonstrating its real-time critical response capability.

Future Work & Extensions

The research identifies several promising directions for extending the S5-SHB Agent:

• Expand LLM Provider Support: Integrate additional LLM providers beyond Google Gemini for enhanced flexibility and resilience.
• Real-Device Deployment Data: Gather extensive reliability data from physical IoT hardware deployment in production environments.
• Full Governance Validation: Bring the remaining mutable parameters to full boundary validation coverage, ensuring complete control.
• Adversarial Threat Injection: Replace the fixed threat schedule with an adversarial injection strategy to robustly stress-test the conflict-resolution cascade under more complex, compound threats.
• Multi-Household Deployment: Extend the architecture to support distributed blockchain and shared governance coordination across multiple smart homes.