DOCUMENT 04 · REVISION 0.1
Preliminary Engineering Specifications
Proposed whole-body system requirements, performance assumptions, controls, and safety architecture for the EF Resonator.
System purpose & form factor
Intended initial use
Operator-controlled wellness and research platform. No disease-treatment claims are included in this specification.
Configuration
Stationary whole-body bed with separate control console or integrated operator interface.
Target envelope
Approximately 84 in L × 34 in W × 24 in H; final dimensions subject to ergonomics, coil geometry, and service access.
User capacity & surface
Design target up to 350 lb, subject to structural verification and safety factor. Nonconductive, cleanable, replaceable comfort layer with ventilation and thermal isolation.
Electromagnetic subsystem
Architecture
Multi-zone coil array intended to support controlled whole-body or selected-zone field delivery.
Waveform & frequency
Programmable waveform generation; supported waveform types and harmonic limits selected after feasibility testing. Engineering team to recommend a safe, stable, measurable operating range; initial concept requires 15 configurable program slots.
Output control
Closed-loop current monitoring, repeatable amplitude control, and independent calibration records.
Field mapping
Document field strength, uniformity, spatial distribution, repeatability, and emissions across the usable surface.
Power, thermal & control architecture
Electrical & thermal
Prototype target: standard U.S. 120 VAC, 60 Hz. Isolated power conversion with protected low-voltage control electronics and separately managed coil-drive stage. Temperature sensors at coil, electronics, and user-contact zones with automatic derating and shutdown. Overcurrent, overvoltage, ground-fault, leakage-current, and abnormal-temperature protection. Modular assemblies with keyed connectors and documented replacement procedures.
Control system
Large, high-contrast touchscreen or sealed control panel readable from the operator position. Fifteen named preset slots with controlled frequency, intensity, waveform, zone, and duration parameters. Proposed selectable duration of 5–60 minutes with countdown, pause, and controlled stop. Operator login, administrator permissions, and protected engineering/service mode. Optional research mode with bounded parameter entry, audit trail, and configurable safety limits.
Safety, human factors & software
Safety & human factors
Physical latching emergency stop with documented safe-state shutdown. Interlocks preventing operation with open panels, hardware faults, or failed sensor checks. On-screen contraindication acknowledgment defined with medical and regulatory advisors. Clear start/pause/stop behavior, visible system state, audible and visual alerts. Formal hazard analysis covering electrical, thermal, mechanical, electromagnetic, and foreseeable-use risks.
Software & data
Session record: timestamp, operator, program, commanded parameters, measured output, duration, interruptions, faults. Local encrypted storage with configurable export; cloud connectivity optional and disabled by default in early prototypes. Signed firmware updates with version history and rollback. No personal health data in the initial prototype absent a defined privacy and cybersecurity program. Power-on self-test, sensor validation, fault codes, calibration status, service log.
Verification plan & deliverables
Prototype verification
Bench testing (electrical safety, thermal rise, continuous operation, output stability, fault response) · calibrated field characterization across frequency, intensity, zone, load, and temperature · EMC pre-compliance before design freeze · mechanical testing (static load, stability, transport, durability, cleaning compatibility) · human-factors observation.
Required deliverables
Approved requirements matrix with traceability · design package (architecture, schematics, drawings, software description, preliminary BOM) · risk package (hazard analysis, preliminary FMEA, open-risk register) · alpha then beta prototype units · reports: field maps, test results, calibration method, service plan, cost model, design-freeze recommendation.
Open decisions requiring engineering and regulatory review
- Validated frequency, amplitude, waveform, and duty-cycle operating envelope
- Coil geometry, zoning strategy, cooling method, and field-uniformity target
- Final electrical input, power consumption, isolation, and circuit requirements
- Wellness-product versus research-platform versus medical-device classification
- Applicable electrical-safety, EMC, software, cybersecurity, and quality standards
- Prototype quantity, development schedule, supplier plan, and total engineering quotation
Core engineering principle
Every delivered session must be measurable, repeatable, logged, and constrained by validated hardware and software safety limits. No preset should be assigned a health benefit until device-specific evidence and claims review support that language.