HOME-08 · Connected Home
Dual-Zone Smart Mattress Thermal Control PCBA
An FCC-photo reference showing a 12 V control board with mirrored left and right power channels, labeled pump, fan, solenoid and reed-switch connectors, plus a separate SOM and antenna assembly.
Project context
How this product is typically engineered
An FCC-photo reference showing a 12 V control board with mirrored left and right power channels, labeled pump, fan, solenoid and reed-switch connectors, plus a separate SOM and antenna assembly.
System architecture
Typical architecture
A typical dual-zone hub uses a real-time MCU to regulate pumps, fans, and valves from a protected 12 V bus while a separate SOM manages networking, data services, and updates; local temperature and flow safeguards remain available if the SOM disconnects.
Engineering risks to resolve
Decisions to close before release
- Coordinate two fluid and airflow zones with low noise, bounded temperature, and stable startup current.
- Detect pump, fan, valve, flow, temperature, condensation, and leak faults during long unattended operation.
- Isolate real-time safety behavior from higher-level connectivity or update failures.
Validation plan
Checks to define before production
- Test input dips, output shorts, blocked or reverse-driven loads, thermal rise, and SOM communication loss.
- Exercise air removal, dry operation, flow anomalies, leak and condensation exposure, and sensor open or short faults.
- Measure acoustic performance, actuator life, wireless coexistence, transport vibration, ESD, EFT, and power-loss recovery.
What to put in the RFQ
Files and records to agree before quoting
Use this list to agree the build inputs and release records for a similar product. The final set depends on the project.
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: Test input dips, output shorts, blocked or reverse-driven loads, thermal rise, and SOM communication loss.
Production release
First-article status plus the agreed SPI, AOI, X-ray, ICT, FCT, programming, rework, OQA, labeling, and packing records.
During RFQ review, we confirm the required fields, sampling, limits, approvals, and record-retention period. Confidential project information stays within the agreed access rules.
Development and production controls
Typical manufacturing scope
- Independent dual-zone actuation.
- Real-time MCU and SOM partitioning.
- Pump, fan, valve, and sensor integration.
Technical image review
Board-level evidence
White-background views are published to make component placement, interfaces and assembly boundaries easier to inspect.
