System Architecture &
Hardware Integration
This document outlines the technical requirements, sensor fusion philosophy, UX expectations, and strict engineering constraints for the Aevea hardware ecosystem. Our goal is to transition from "PetTech 2.0" (plastic GPS toys) to "PetTech 4.0"—a jewellery-grade, unified physical control loop focused on longevity intelligence and resting biometrics.
Agency Scope Notice
Current Contract Scope (Phase 1): Design and engineering for the Link Collar, Bond Leash Handle, and App v1.0 ONLY.
Note: Phase 2 actuation products (Nest, Stem, Flow, etc.) and deep AI learning loops are documented here purely for forward-compatibility context. Do not design Phase 2 products during this sprint, but ensure Phase 1 data architecture supports future integration.
01. Ecosystem Architecture
The Closed-Loop Infrastructure
Aevea is a distributed network where Sensing Nodes (Phase 1) capture resting metabolic output and spatial data, and Actuation Nodes (Phase 2) manage metabolic input and environment, all orchestrated by the continuously learning Command Center (App).
Sensing Nodes
LINK COLLAR • BOND LEASH
Command Center App
MOBILE APP (IOS/ANDROID)
v1.0 manages hardware, spatial safety & live tracking. Future v2.0 manages exact caloric balancing and AI health predictions.
Actuation Nodes
NEST BED • STEM FEEDER
02. Phase 1 Sensor: Link Collar
Link
Current ScopeThe biometric spine of the ecosystem. Focus is placed on discreet intelligence, resting biometrics, and robust tracking.
Design & Features
- • Aesthetics: "Apple Watch-like" discreet design. Avoids chunky tech-toy look.
- • NFC Lost Mode: Digital pet tag for verified ID & Passport sharing via smartphone scan.
- • BLE Ecosystem: Low energy module interacts securely with Phase 2 products.
- • Spatial Engine: Live GPS & UWB integrated for Tether Mode boundaries.
Resting Sensor Fusion Array
Core Biometrics (SCG + Accel)
Primary reliance on Seismocardiography (chest micro-vibrations) to capture absolute Resting Respiratory Rate (RRR) and motion-derived cardiac inference, cleanly bypassing dense fur barriers.
Optical Evaluation
Evaluating PPG feasibility for RHR. If signal degrades heavily via fur, SCG acts as primary.
Thermal Integrity
Skin and Ambient temperature tracking with mandatory internal battery thermal auto-cutoff.
03. Phase 1 Interface: Bond Handle
Bond Handle
Current ScopeThe physical connection point. Engineered for premium tactility and solid-state reliability, integrating directly with the Link collar via Tether Mode logic.
Hardware Spec
- • Materials & Recoil: Premium metal unibody construction. Must feature a smooth, highly engineered "soft touch" recoil mechanism and a breakaway safety module.
- • Solid-State UI: Replace mechanical buttons with virtual/capacitive touch areas featuring localized force-feedback to ensure ultimate waterproofing and a premium feel.
Interaction & Charging Logic
Tether Mode (Virtual Leash)
Utilizes ultra-wideband (UWB) to sync with the Link collar, establishing a secure, invisible perimeter for off-leash training in urban environments.
Active Recall Assist
Triggered via the handle trackpad. Sends distinct, trained haptic vibration patterns instantly to the Link collar to silently recall the pet.
Parasitic Link Charging
The Bond handle charges wirelessly via Qi. The leash line contains a conductive wire allowing the handle to parasitically charge the Link collar while physically tethered during walks.
04. Software Infrastructure: The App
Tether Mode Feature References
Visual references detailing the intended hardware interface and spatial logic exclusively for the Tether Mode (Virtual Leash) feature.
Intended Use & Feature Tiers
The command centre for pet longevity. Turns biometric data into actionable care without relying on overly clinical or medical jargon in the consumer UI. The architecture must accommodate a freemium model, providing core safety and identity features for all hardware owners while reserving advanced longevity insights for intelligence subscribers.
Essential
Free Tier-
Tether Mode & Hardware Control Phase 1 Target
Core safety feature. UI for setting spatial boundaries, haptic alerts, and managing Bond & Link provisioning.
-
Live GPS Tracking Phase 1 Target
Real-time location mapping pinged from the Link collar's integrated GPS module, activated upon emergency or breach.
-
Pet ID, Permits & Passport Phase 1 Target
Travel & Tenancy Ready. A verifiable, shareable digital record of identity, city permits, vaccinations, and health status for airlines and landlords.
Intelligence
Premium Tier-
Gait & Mobility Analysis Phase 1 Target
Orthopedic Early Warning. AI analyzes stride length, cadence, and symmetry from the Link collar to detect early signs of pain or injury before they are visible.
-
Veterinary Telemetry Phase 1 Target
Remote Clinical Dashboard. Owners can share a "Pro Link" granting their veterinarian temporary access to 30-day resting HRV, RRR, sleep, and gait trends to support clinical visits.
-
Digital Twin & Longevity Alerts Phase 2 AI Expand
The app contains an AI continuously trained on accumulated data from all customers to generate proactive wellness warnings and health predictions.
-
Caloric Balancing Engine Phase 2 Actuation
The app tracks pet weight (via Nest scale) and calculates metabolic burn, making proactive suggestions for specific food dispense amounts to the hardware (via Stem/Flow logic).
While the user-facing application maintains a clean, minimal, Apple-like simplicity (avoiding medical phrasing), the underlying app architecture must support deep data utility. The database layer must be constructed to facilitate: Longitudinal health modeling, Cross-cohort data aggregation, potential Federated Learning pipelines, and an API layer for future enterprise pharmaceutical licensing.
05. Phase 2 Actuation Nodes
OUT OF SCOPE: The following hardware is provided strictly for contextual understanding of the overall ecosystem logic. No design deliverables are required for these items in Phase 1.
Stem
AI Feeder
AI precision feeder for exact caloric input tracking, multi-pet recognition, and appetite fluctuation alerts.
Flow
Smart Fountain
Smart hydration fountain capturing exact water intake to identify early signs of kidney or urinary issues.
Nest
Biometric Bed
Biometric bed featuring an integrated scale for passive daily weight tracking, sleep analysis, and thermoregulation.
Pure
Air Monitor
Environmental monitor correlating indoor air quality (AQI) and allergens with respiratory biometrics.
Brim / Brim W
Smart Bowls
Smart bowls for passive calorie and hydration logging.
Den
Recovery Bed
Enclosed recovery bed designed for post-surgery healing and anxiety calming.
Nova
Smart Harness
Clinical smart harness capturing ergonomic biometrics, posture tracking, and kinetic output metrics.
Sift
Auto Litter
Auto cat litter robot with AI camera to detect pee/poop and smart colour-changing pH litter.
06. Engineering Specifications & Mandates
Battery Architecture & Power Philosophy
- • Target battery life: 5–7 days under normal use.
- • Emergency LTE/GPS Tracking: Minimum 12 hours continuous.
- • Charging time: Under 90 minutes.
- • Walk Recharge Expectation: A 15–30 minute walk should provide a meaningful top-up via Bond parasitic charging. Requires a waterproof Magnetic Pogo-Pin connector (MagSafe style) to prevent damage from sudden pulls.
- • Target max weight: Under 40g for medium size.
- • Accelerometer Gatekeeping: Movement sensors act as gatekeepers. Polling for Resting HR & RRR only occurs when absolute stillness is verified.
- • LTE Standby: LTE only activates on 1) Geofence breach, 2) When marked lost by owner, or 3) Manual app request.
Mechanical & Durability
- Aesthetics: Premium metal housings required. No exposed screws. Maintain antenna transparency (prevent Faraday-caging).
- Impact & Bite: Drop resistance certified to 1.5m on concrete. Bite resistance evaluation mandatory for Link collar.
- Environment: Minimum IP67 waterproof rating (IP68 preferred). Hypoallergenic skin-contact materials required.
- Acoustics: Silent operation. No mechanical noise or clicking.
Firmware & Data Security
- • OOBE Choreography: Design a flawless pairing sequence. LEDs and haptics programmed for initial unboxing to convey premium intelligence.
- • OTA firmware updates mandatory.
- • End-to-end encryption (AES-256 minimum). LE Secure Connections required.
- • Data Strategy: Raw data processed on-device into derived metrics. Clinical-relevant data stored in structured formats.
- • Architecture must be strictly GDPR Compliant (data export & deletion).
07. Compliance & Regulatory
Regulatory Positioning
Aevea is positioned strictly as a consumer wellness and safety device in Phase 1.
Rule 1: No diagnostic medical claims are to be made in hardware or app UX.
Rule 2: However, the underlying data infrastructure must be engineered to rigorous standards to allow for future clinical validation studies and FDA/RCVS discussions.