ENG-08 · Energy & Power
AI Home Energy Monitoring and Load Disaggregation PCBA
A representative edge-measurement platform for high-rate whole-home energy sampling, appliance signature extraction, local processing, and secure wireless reporting.
Project context
A representative engineering program
A representative edge-measurement platform for high-rate whole-home energy sampling, appliance signature extraction, local processing, and secure wireless reporting.
System architecture
How the electronics are organized
Current-transformer and mains-voltage inputs pass through protection and low-noise analog front ends to high-speed ADCs; a CPLD aligns sample timing before an ARM processor handles buffering, storage, wireless communication, and model features.
Engineering risks to close
What must be resolved before release
- Capture low-level appliance signatures accurately beside hazardous mains voltages and high common-mode noise.
- Sustain synchronized high-rate sampling, buffering, compute, and thermal limits without losing events.
- Control privacy, device identity, secure updates, and false-positive load classification over product life.
Validation plan
Evidence expected before production
- Calibrate channel gain and phase and test CT orientation, saturation, crosstalk, and representative load waveforms.
- Measure sampling jitter, dropped data, analog noise, EMC immunity, thermal stability, and power-interruption recovery.
- Evaluate load-disaggregation precision and recall on a labeled dataset plus offline, reconnect, and update scenarios.
Decision-ready evidence packet
What a comparable RFQ should define
This checklist turns the technical story into reviewable inputs and release records. It describes what buyers and manufacturers should agree—not a claim that every listed record applies to every build.
Design baseline
Released schematic or block diagram, interface table, power states, critical constraints, and revision owner.
Manufacturing release
Gerber or ODB++, stack-up, centroid data, assembly drawings, approved DFM dispositions, and panel assumptions.
Material control
Released BOM revision, manufacturer part numbers, AVL or alternate rules, no-substitute lines, MSL handling, and exception approvals.
Validation record
Test method, acceptance criteria, sample or serial identity, measured result fields, and disposition. Example scope: Calibrate channel gain and phase and test CT orientation, saturation, crosstalk, and representative load waveforms.
Production release
First-article status plus the agreed SPI, AOI, X-ray, ICT, FCT, programming, rework, OQA, labeling, and packing records.
Project-specific fields, retention periods, sampling rules, measured limits, and customer approvals are confirmed during RFQ and protected under the applicable confidentiality agreement.
Development and production controls
Manufacturing scope represented here
- Low-noise multi-channel energy acquisition.
- ADC and CPLD sampling pipelines.
- ARM edge processing and wireless telemetry.
Technical image review
Board-level evidence
White-background views are published to make component placement, interfaces and assembly boundaries easier to inspect.
