I. Requirements Analysis

The health status of outdoor power construction workers or power inspection personnel directly impacts work progress. The smart wristband is a wearable intelligent monitoring device designed to dynamically track vital signs during power construction operations or inspection tasks. Integrating multiple sensor modules, the device continuously monitors physiological conditions in complex inspection environments and features an automatic emergency alert function to safeguard personnel safety.

II. Working Principle

Wearable Smart Behavior and Vital Signs Monitoring Device is specifically designed for intelligent behavior and vital signs monitoring of power workers. It employs biometric identification for identity verification and clocking in, with recognition results and real-time location data during clocking in reported to the system. Simultaneously utilizing BeiDou positioning, it periodically reports location information to the system; Automatically collects motion status data; continuously monitors heart rate in real-time at one-second intervals, storing and reporting all historical data to the server. Features an SOS emergency alert function, providing real-time protection for the safety of power workers.

III. Features and Functions

1. Biometric identity verification and attendance tracking: Local recognition without network connectivity, identification speed within 6 seconds, 93% recognition success rate, with real-time reporting of recognition results and location data during clock-in.

2. Utilizes BeiDou positioning functionality, achieving positioning accuracy within 4 meters outdoors in unobstructed conditions; automatically reports location data to the system at scheduled intervals. When outdoors with obstructions, incorporates satellite signal filtering to eliminate poor-quality signals.

3. Built-in gyroscope; automatically collects over five distinct motion state data points per second, storing and reporting all historical data;

4. Continuously monitors heart rate in real time at one-second intervals and stores all historical data for reporting to the server.

5. SOS Active Rescue Function;

6. Features a display screen capable of showing the wearer's name and server-transmitted messages;

7. Step-counting function, exercise trajectory tracking;

8. Regular data transmission to the server: While worn, the device reports complete data every 10 minutes. This includes the device MAC address, SIM card ICCID, battery level, device wear status, step count, check-in time/ check-in result, location information, location time, historical heart rate data collected per second with timestamps, and activity status duration collected per second with timestamps.

9. Reports 8 complete data points every 10 minutes, with a battery life of 48 hours or more when worn continuously.

10. 10-day standby battery life. When not wearing the heart rate module and inactive, the device automatically enters low-power mode. When worn in low-power mode, it automatically wakes up and resumes normal reporting mode.

11. Lightweight and easy to carry;

12. Shockproof, IP67 waterproof rating;

13. Supports 4G communication via SIM card insertion, enabling integration with information systems while meeting cybersecurity requirements.

IV. Product Specifications

Serial Number	Function	Technical Specifications
1	Chip Platform	4G    CAT1    Zhanrui   8910FF
2	Sensor	3011
3	SIM卡	eSIM + Nano SIM Dual-SIM Compatibility Design
4	Storage	24MB + 16MB RAM
5	Display	1.28-inch IPS display with 240×240 ultra-high resolution
6	触摸屏	Supports capacitive touchscreens
7	Vibration Motor	Support
8	Battery	650mAh, lasts 3-4 days
9	Button	Power button + SOS button
10	Charging	Magnetic 4-Pin
11	GPS antenna	LDS式
12	Dimensions	Diameter 43mm × 12.8mm
13	High-temperature resistant	60℃
14	Loudspeaker	Class D Amplifier 0815 Sound Chamber Speaker