WELL-08 · Wellness Electronics
4D Smart Massage Chair Main Control PCBA
A representative system-control architecture for coordinating massage mechanisms, travel axes, recline actuators, air compression, heating, wired controls, and optional connectivity in a mains-powered chair.
Project context
A representative engineering program
A representative system-control architecture for coordinating massage mechanisms, travel axes, recline actuators, air compression, heating, wired controls, and optional connectivity in a mains-powered chair.
System architecture
How the electronics are organized
Protected mains input and isolated supplies feed several motor, actuator, pump, valve, and heater domains; a central MCU sequences motion from limit, position, current, and temperature feedback with local safety interlocks.
Engineering risks to close
What must be resolved before release
- Coordinate many axes and pneumatic loads without mechanical conflict, pinch, or uncontrolled travel.
- Handle simultaneous motor startup, wiring complexity, heat, and mixed-voltage EMC constraints.
- Recover to a defined safe state after sensor disagreement, hand-controller loss, or power interruption.
Validation plan
Evidence expected before production
- Verify homing, full travel, direction, limits, current-based stall detection, emergency stop, and pinch scenarios.
- Test worst-case load combinations, input variation, thermal soak, insulation, and conducted or radiated emissions.
- Run complete motion, pneumatic, heating, harness-vibration, and fault-log endurance programs.
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: Verify homing, full travel, direction, limits, current-based stall detection, emergency stop, and pinch scenarios.
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
- Multi-axis motion and actuator sequencing.
- Pump, valve, heater, and hand-control integration.
- Homing, interlock, and diagnostic state management.
Technical image review
Board-level evidence
White-background views are published to make component placement, interfaces and assembly boundaries easier to inspect.
