Use Case Diagram – Weather Station System

Actors:

Administrator

• Responsible for managing system settings, calibrating sensors, and overseeing overall system health.

End User / Observer

• Interested in viewing current weather data, historical reports, and receiving weather alerts.

Sensor Device

• Autonomous system that continuously sends data (e.g., temperature, humidity, wind speed) to the Weather Station system.

Data Consumer

• External systems (such as third-party apps) that consume weather data via APIs or data exports.

Maintenance Technician

• Involved in physically maintaining and repairing the hardware components of the system, including sensors.

Use Cases:

Configure Weather Station

• Actor: Administrator
• Description: The Administrator configures the weather station’s settings, including sensor types, calibration parameters, and alert thresholds.

Calibrate Sensors

• Actor: Administrator, Maintenance Technician
• Description: Sensors are calibrated to ensure accurate data readings. Calibration may occur automatically or be triggered manually.

Collect Weather Data

• Actor: Sensor Device
• Description: The sensors collect weather data such as temperature, humidity, wind speed, and rainfall at set intervals and send it to the system.

View Live Weather Data

• Actor: End User / Observer
• Description: The End User can view the real-time weather data via a web interface, mobile app, or physical display.

Generate Reports

• Actor: End User / Observer
• Description: The End User can generate weather reports (daily, weekly, monthly) and visualize data trends using charts and graphs.

Receive Weather Alerts

• Actor: End User / Observer
• Description: The End User receives automated notifications or alerts about extreme weather conditions, such as high winds or temperature changes.

Consume Weather Data

• Actor: Data Consumer
• Description: External systems or applications can consume weather data by calling APIs or downloading exportable data files (e.g., CSV).

Perform System Maintenance

• Actor: Maintenance Technician
• Description: The Technician performs routine maintenance, repairs, and upgrades on the physical weather station hardware.

Diagram Representation:

While I cannot directly generate a visual diagram here, I can describe how to draw it.

Actors:

• Draw stick figures for Administrator, End User, Sensor Device, Data Consumer, and Maintenance Technician on the left side of the diagram.

System Boundary:

• Draw a rectangle to represent the Weather Station System. The actors will be outside this boundary, while the use cases will be inside.

Use Cases:

Inside the rectangle, draw ovals for each use case. Label them as:

• Configure Weather Station
• Calibrate Sensors
• Collect Weather Data
• View Live Weather Data
• Generate Reports
• Receive Weather Alerts
• Consume Weather Data
• Perform System Maintenance

Relationships:

Connect the actors to the relevant use cases using solid lines. For example:

• The Administrator is connected to Configure Weather Station and Calibrate Sensors.
• The Sensor Device is connected to Collect Weather Data.
• The End User is connected to View Live Weather Data, Generate Reports, and Receive Weather Alerts.
• The Data Consumer is connected to Consume Weather Data.
• The Maintenance Technician is connected to Perform System Maintenance.

Explanation for Students:

Actors interact with the system through use cases.

• The Administrator manages the system configuration, calibrates sensors, and oversees general system health.
• End Users interact with the system to view live data, generate reports, and receive alerts.
• Sensor Devices autonomously collect and send data to the system.
• Data Consumers are external systems that pull weather data for further use, such as weather apps or third-party services.
• Maintenance Technicians ensure the hardware components are working correctly and maintain the system.

Use Cases represent the specific actions or processes that each actor performs with the system.

• For example, View Live Weather Data allows the End User to see current weather information, while Perform System Maintenance is a key task for the Maintenance Technician.