Smart Door Lock Solution Development Case
Smart Home | Client：某安防企业
Project Background: The client is a lock company in Zhongshan, needing to develop a smart door lock for home improvement market, supporting fingerprint, password, card, key multiple unlocking methods.
Solution Design:
1. Main Control Chip: HC32L136K8TA low-power MCU
2. Fingerprint Module: Capacitive fingerprint sensor, recognition rate >99%
3. Keyboard: Touch password keyboard, backlight design
4. Driver: Motor driver, controls lock tongue expansion
5. Power: 8 AA batteries power supply, low-power design
6. Functions: Anti-pry alarm, low battery reminder, dummy password
Technical Challenges:
- Low Power Design: Standby current <50uA, battery life 1 year
- Fingerprint Recognition Speed: <0.5 second recognition
- Security: Anti-black box, anti-technical opening
Deliverables:
- Hardware Design: Main board, fingerprint board, keyboard board
- Firmware Development: Fingerprint algorithm, motor control, low-power management
- Testing Certification: Passed GA/T 374 standard testing
- Structural Cooperation: Cooperated with lock body structure design
Customer Value: Product successfully entered home improvement channel, annual shipment reached 100,000 sets.
Project Results
Project Results: Successfully delivered pet GPS tracker PCBA solution. Client has started mass production with monthly output of 12,000 units.
Key Metrics:
- Yield rate: 98.7%
- Power consumption: 4G Cat.1, 5 days battery life
- Performance: GPS+LBS+WiFi positioning, real-time tracking, geo-fence
- Reliability: IP67 waterproof, shock resistant
Client Feedback: Positioning accuracy good, battery life exceeds expectation.