Smart Sensor Trash Can PCBA Solution Development
Akıllı Ev | Müşteri：某Home Goods Brand
Project Background: The client needs to develop a smart sensor trash can PCBA solution, supporting infrared sensor automatic lid opening, low power design, suitable for home kitchen, bathroom, office and other scenarios.
Solution Design:
1. Main Control Chip: STM8S003F3 low-power 8-bit microcontroller
2. Sensor: HC-SR501 pyroelectric infrared sensor, sensing distance 30cm
3. Actuator: SG90 micro servo controls lid opening and closing
4. Power Design: 4 AA batteries power supply, standby current <50uA
5. Function Design: Automatic lid opening, 5-second automatic lid closing, always-on mode
Technical Challenges:
- Low Power Optimization: Standby current controlled below 50uA, ensuring battery life of 1 year
- Sensing Stability: Avoid false triggers, adjustable sensing distance
- Structural Cooperation: Servo and lid mechanism cooperation design
Result Analysis:
- Product Performance: Sensing distance 10-30cm adjustable, lid opening time 0.5 seconds
- Battery Life: 4 AA batteries can be used for 12 months
- Sensing Accuracy: >99%
- BOM Cost: Controlled within 15 yuan
Application Scenarios:
- Home Use: Kitchen, bathroom, living room
- Office Places: Office, meeting room
- Public Places: Hotel, mall, hospital
- Special Scenarios: Medical waste bin, pet supplies
Proje Sonuçları
Project Results: Successfully delivered smart induction trash can PCBA solution. Client has started mass production with monthly output of 30,000 units.
Key Metrics:
- Yield rate: 98.8%
- Power consumption: 0.5W standby, optimized
- Performance: Infrared sensing distance 0-30cm adjustable
- Reliability: IPX4 waterproof rating
Client Feedback: Solution meets all requirements, sensor sensitivity is excellent.