This scheme targets standby power reduction, dynamic load control, precision temperature/power regulation, and hardware low-power design to cut total power consumption by 30%–60% while ensuring disinfection performance and safety.

2. Core Optimization Objectives

Standby power ≤ 0.1W (from typical 0.5–1.0W)

Reduce invalid heating/UV/ozone operation by ≥40%

Adaptive power output based on load and door status

Stable disinfection effect with lower energy input

3. Hardware Low-Power Design

MCU & Peripherals

Use ultra-low-power MCU (STM32L/MSP430) with sleep/stop modes

Disable unused ADC, UART, and timers in idle

Interruption-only key scan (replace continuous polling)

Display & Interface

Turn off LCD/LED backlight after 10s; keep only status dot

Use segment LCD/reflective display instead of high-power TFT

Sensor & Actuator

High-sensitivity door magnetic + temperature/humidity sensor

PWM-driven heating/UV/fan (avoid full-power continuous work)

Low-leakage relays & MOSFETs; reduce drive loss

Power Supply

High-efficiency AC-DC/DC-DC (>90%)

No-load loss optimization; linear LDO only for analog circuits

4. Software Energy-Saving Strategy

3-Level Hierarchical Sleep

Level 1 (10min): Keep key & display; power ~0.15W

Level 2 (30min): Display off, key wake-up only; ~0.1W

Level 3 (2h+): Deep sleep, timer wake-up only; ~0.05W

Intelligent Disinfection Logic

Door status interlock: Stop all loads when door open

Zoned independent control: Upper/layer separate on/off

Load adaptive: Reduce power for half-loaded cabinet

Smart timing: Auto-shutdown after disinfection done; no delayed heating

Precise Temperature Control

PID closed-loop to avoid over-temperature

Maintain target temperature with duty-cycle modulation

Residual heat preservation to shorten heating time

UV/Ozone Dynamic Adjustment

Reduce power in steady disinfection state

Intermittent operation mode (e.g., work 30s, pause 2min) for maintenance

5. Operating Mode Optimization

Mode Logic Energy-Saving Effect

Daily Standby Auto deep sleep ↓ 60%+ standby power

Quick Disinfection Low-power UV + fan ↓ 30% vs full mode

Storage & Maintenance Intermittent low-power ↓ 50% long-term power

Full Load High-Temp PID precise heating ↓ 20% heating energy

6. Safety & Reliability Guarantee

Over-temperature / over-current / door abnormal protection

Fault auto power-off; anti-freeze for long standby

Sensor fault fallback to timing control

No impact on disinfection standard compliance

7. Expected Effect

Standby power: ≤0.1W

Full-cycle energy-saving rate: 30%–60%

Extended component life (reduced heating stress)

Meet global low-power appliance standards

8. Implementation Roadmap

Hardware: Low-power MCU + high-efficiency power + PWM drive

Software: Sleep mechanism + PID + adaptive mode

Test: Calibrate temperature/power; verify disinfection effect

Mass production: BOM optimization & firmware parameter tuning

Do you want me to provide a simplified English version for product specification or a firmware pseudo-code for the sleep & PID control?