08.01 Working With Device Data And Diagnostics - Quiz

Section 8.1 Quiz: Working with device data and diagnostics

1. What information should ALWAYS be included with every sensor reading in a mechatronic system?

   • The sensor reading value only
   • Timestamp, sensor ID, value, and units {data-correct}
   • Just the timestamp and value
   • Only the units and sensor ID

2. In the context of mechatronic systems, what is telemetry?

   • A type of sensor that measures distance
   • The automated collection and transmission of data from remote devices {data-correct}
   • A method for calibrating sensors
   • A programming language for robotics

3. Which of these is the BEST way to handle units in your code?

   • Don’t worry about units, just use numbers
   • Put units in comments only
   • Use descriptive variable names that include the unit (e.g., temp_celsius) {data-correct}
   • Use the same unit for everything to keep it simple

4. What is a key advantage of using CSV files for storing sensor data?

   • CSV files are encrypted by default
   • CSV files can only store numbers, making them safer
   • CSV files are human-readable and can be processed by many tools {data-correct}
   • CSV files automatically compress the data

5. Which of these represents good logging practice for a mechatronic system?

   • Log everything possible, even if it’s not needed
   • Only log when something goes wrong
   • Log regularly with consistent format, timestamps, and clear identification {data-correct}
   • Use different log formats for different sensors

6. In the greenhouse monitoring example, what would be a reasonable approach for handling sensor readings that are outside normal ranges?

   • Ignore them completely
   • Delete them from the log file
   • Log them but also trigger an alert or notification {data-correct}
   • Replace them with average values

7. When designing data storage for a mechatronic system, what should you consider for security?

   • Only technical encryption methods
   • Access control, backup strategies, and data retention policies {data-correct}
   • Just password protection
   • Security isn’t important for mechatronic systems

8. What is the main purpose of the SensorReading class in our example code?

   • To control the physical sensors
   • To provide a structured way to store sensor data with metadata {data-correct}
   • To encrypt sensor data
   • To convert between different units automatically