High-Density PID Heater: NTC-Integrated Multi-Stage Smart Toilet Instant Heating System

I. Core Circuit Architecture

Main Control System

• Multi-layer PCB Design (illustrated green substrate)

• Main Control Chip: ARM Cortex-M series processor

• Supporting ICs:

• Temperature signal processor

• Power driver module

• Safety monitoring chip

Circuit Characteristics

• Precision resistor network

• High-frequency filter capacitor array

• Power regulation module

• Dual fuse protection

II. Heating System Technical Parameters

Performance Metrics

• Instant Power Output: 3000W (peak)

• Thermal Efficiency: ≥98%

• Water Temperature Control:

• Adjustable Range: 30–45°C

• Steady-State Error: ±0.3°C

• Response Time: <2 sec

Structural Parameters

• Waterway Capacity: 120ml

• Pressure Resistance: 1.6MPa

• Flow Rate Range: 200–600ml/min

• Heat Exchange Efficiency: 85%

III. Intelligent Control System

Temperature Management

✅ Dual NTC Sensors
✅ Adaptive PID Algorithm
✅ Dynamic Power Compensation
✅ Overheat Protection (auto cutoff ≥65°C)

Safety Protection

⚡ 8-Layer Protection System:

1. Dual Leakage Protection (AC/DC isolation)

2. Dry-Fire Detection (flow sensor linkage)

3. Overvoltage Protection (TVS diode array)

4. Overcurrent Protection (HBM series module)

5. Short-Circuit Protection (self-recovery fuse)

6. Ground Fault Detection

7. Water-Electric Separation

8. Pressure Relief Valve

IV. Product Advantages

Technological Innovations

? Hybrid Heating Technology:

• Instant Heating (startup phase)

• Pulse Maintenance (temperature-holding phase)
  ? Environmental Adaptability:

• Operating Humidity: 20–95% RH

• Storage Temperature: -30°C to 85°C

Reliability Enhancements

? Gold-Plated Connectors (TB Series) – Corrosion-resistant signal transmission
? Dual-Shielded Wiring (red/blue lines) – EMI protection
? Ferrite Core Filtering (black/brown power lines) – Noise suppression

V. Maintenance Recommendations

⚠ Professional servicing recommended every 2 years or 5,000 operating hours to ensure:

• Optimal thermal performance

• Electrical safety compliance

• Long-term reliability in humid environments

Custom Smart Toilet Mainboard PCBA

Modular Function Design

l Core Functions (Rapid Integration)

l Advanced Customization

- Electronic Extensions:  

  • IoT Control: APP/Wireless remote  

  • HMI: Smart display + Voice feedback  

  • Health: urinalysis (interface reserved)  

- Mechanical Synergy:  

  • Auto-lid motor drive optimization  

  • Precision foam generator control  

End-to-End Development

 Vertical Manufacturing Advantage:  

  • Mold R&D: fast structural development (solves deformation/leaks)  

  • Electro-mechanical integration: Unified PCBA & heating module design  

  • Pilot to mass production: in-house SMT+assembly to ensure fast production

Competitive Benchmarking

Transform your smart toilet concept into a market-ready product. Welcome to contact with us today for a personalized proposal with functional prototypes, BOM optimization analysis, and turnkey delivery schedule.