Analog vs digital data points in SCADA systems - Hands-On Comparison

Analog vs Digital Data Points in SCADA Systems

📖 Scenario: You are working with a SCADA system that monitors a factory's sensors. Some sensors send analog data like temperature and pressure, while others send digital data like on/off status of machines.To manage these sensors, you need to organize their data points clearly.

🎯 Goal: Create a simple program that stores sensor data points as analog or digital, then filters and shows only the analog data points.

📋 What You'll Learn

Create a dictionary called data_points with sensor names as keys and their types ('analog' or 'digital') as values.

Create a variable called filter_type and set it to the string 'analog'.

Use a dictionary comprehension to create a new dictionary called filtered_points that only contains sensors of type 'analog'.

Print the filtered_points dictionary.

💡 Why This Matters

🌍 Real World

SCADA systems monitor many sensors that send different types of data. Organizing and filtering these data points helps operators focus on important information quickly.

💼 Career

Understanding how to manage and filter sensor data is key for roles in industrial automation, system monitoring, and DevOps for manufacturing environments.

1

Create the data points dictionary

Create a dictionary called data_points with these exact entries: 'TempSensor1': 'analog', 'PressureSensor1': 'analog', 'MotorSwitch1': 'digital', 'ValveSwitch1': 'digital'.

SCADA systems

# Create the data_points dictionary with sensor names and their types
# Your code here

Need a hint?

Use curly braces {} to create a dictionary. Each entry has a sensor name as a string key and its type as a string value.

2

Add the filter type variable

Create a variable called filter_type and set it to the string 'analog'.

SCADA systems

data_points = {
    'TempSensor1': 'analog',
    'PressureSensor1': 'analog',
    'MotorSwitch1': 'digital',
    'ValveSwitch1': 'digital'
}
# Create filter_type variable and set it to 'analog'
# Your code here

Need a hint?

Just assign the string 'analog' to the variable filter_type.

3

Filter the analog data points

Use a dictionary comprehension to create a new dictionary called filtered_points that contains only the entries from data_points where the value equals filter_type. Use sensor and point_type as the loop variables.

SCADA systems

data_points = {
    'TempSensor1': 'analog',
    'PressureSensor1': 'analog',
    'MotorSwitch1': 'digital',
    'ValveSwitch1': 'digital'
}
filter_type = 'analog'
# Create filtered_points dictionary using dictionary comprehension
# Your code here

Need a hint?

Use {sensor: point_type for sensor, point_type in data_points.items() if point_type == filter_type} to filter.

4

Display the filtered analog data points

Write a print statement to display the filtered_points dictionary.

SCADA systems

data_points = {
    'TempSensor1': 'analog',
    'PressureSensor1': 'analog',
    'MotorSwitch1': 'digital',
    'ValveSwitch1': 'digital'
}
filter_type = 'analog'
filtered_points = {sensor: point_type for sensor, point_type in data_points.items() if point_type == filter_type}
# Print the filtered_points dictionary
# Your code here

Need a hint?

Use print(filtered_points) to show the filtered dictionary.