1. Real-time Monitoring and Data Collection: Smart helmets are equipped with sensors that can monitor workers' physiological conditions (such as heart rate, body temperature) and environmental parameters (such as temperature, humidity, concentration of harmful gases) in real-time. This data is transmitted to the central management system through wireless transmission technologies (such as Bluetooth, Wi-Fi), helping managers to understand the on-site situation promptly and ensure worker safety.

2. Positioning and Trajectory Tracking: Smart helmets have built-in GPS or other positioning technologies to achieve precise positioning and trajectory tracking of workers. This is particularly important for large construction projects, where managers can grasp workers' locations in real-time, optimize resource allocation, and improve work efficiency.

3. Voice Communication and Alarm Functions: Smart helmets are equipped with voice communication systems, allowing workers to communicate with managers in real-time, enhancing collaboration efficiency. Additionally, when detecting dangerous situations (such as high temperatures, gas leaks), the helmet will automatically send out an alarm signal, reminding workers to take timely evasive actions.

4. Augmented Reality (AR) Functions: Some smart helmets integrate AR technology, which can provide workers with construction guides, operational steps, and other information through head-mounted displays. This helps workers complete tasks more accurately and reduce human errors.

5. Work Hours Recording and Attendance Management: Smart helmets can automatically record workers' working hours, avoiding the drawbacks of traditional manual clocking and improving the accuracy and efficiency of attendance management.

6. Accident Recording and Analysis: In the event of an accident, smart helmets can record the time, location, and environmental parameters of the incident, providing detailed data for post-incident analysis. This helps companies identify the causes of accidents, formulate improvement measures, and prevent similar incidents from occurring again.

Through these functions, smart helmets offer significant advantages in enhancing safety assurance, optimizing management processes, and improving construction efficiency, making them an essential device in modern infrastructure construction projects.