Nanjing Duotai Smart Technology Co., Ltd.
Nanjing Duotai Smart Technology Co., Ltd.
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I. Core function design
Multi-factor authentication system
Semiconductor living fingerprint identification (can store more than 100 sets)
Six-digit password (supports dummy password to prevent peeking)
Mechanical emergency key
Composite authentication mode (fingerprint + password / fingerprint + key)
Electromechanical control module
6V DC electromagnetic lock (holding current ≤ 0.3A)
Power failure protection device (the keyhole can be connected to 9V emergency power supply when the battery is exhausted)
2. Human-computer interaction system
Intelligent touch panel
Capacitive touch button (with dustproof and waterproof coating)
Three levels of adjustable backlight (default 15 seconds automatic off)
Status indicator system
Multi-color LED indicator (red-alarm / blue-normal / green-on)
Beeper feedback (90dB alarm is triggered after 3 incorrect inputs
3. Power management system
Power supply configuration
4 AA battery compartment (supports nickel metal hydride/battery)
Low power design (static standby current <50μA)
Dual circuit redundant power supply (automatic switching of main and auxiliary battery packs)
Energy monitoring
Voltage detection chip (replace when power <20%)
Emergency micro USB interface (support 5V/2A fast charging)
4. Security enhancement Settings
Electromagnetic shielding layer (anti RFID signal interception)
Self-locking protection mechanism (lock for 5 minutes after 3 consecutive errors)
Anti-disassembly sensor (instant alarm triggered by abnormal vibration)
V. Suggestions for expanding functions
Intelligent and interconnected options
WIFI module (APP temporary authorization to unlock)
Event log (stores the last 1000 operations)
Environmentally adaptive design
Wide temperature components (-20℃~60℃ normal operation)
Moisture-proof coated circuit board (stable operation at 95% humidity)
V. Production supporting suggestions
List of components
2 Emergency keys (with independent number plate)
Quality inspection focus
10,000 cycles of durability test
1.5 meter drop test
While ensuring basic functions, the scheme strengthens:
Security-The password is protected by dynamic keyboard + virtual password
Reliability-Dual power supply design to avoid power failure lock
Ergonomics-Three levels of backlighting adapt to different lighting environments
Extensibility-Smart module interfaces are reserved for easy upgrades
It is recommended to adopt modular design, and assemble the electronic control part and mechanical structure in layers for easy maintenance and upgrade in later stages. ABS shell is recommended to use flame retardant grade material (UL94 V-0), and the surface is treated with anti-fingerprint texture.