Signal conditioning and scaling in SCADA systems - Mini Project: Build & Apply

Signal Conditioning and Scaling in SCADA Systems

📖 Scenario: You are working with a SCADA system that reads raw sensor signals. These signals need to be conditioned and scaled to meaningful engineering units before use.For example, a temperature sensor outputs a raw value that must be converted to degrees Celsius.

🎯 Goal: Build a simple program that takes raw sensor signals, applies conditioning by removing noise, and scales the cleaned signals to engineering units.

📋 What You'll Learn

Create a dictionary called raw_signals with exact sensor names and raw values

Add a variable called noise_threshold to filter out noise

Use a for loop with variables sensor and value to condition and scale signals

Print the final scaled signals dictionary called scaled_signals

💡 Why This Matters

🌍 Real World

SCADA systems often receive raw sensor data that must be cleaned and converted to useful units before monitoring or control.

💼 Career

Understanding signal conditioning and scaling is essential for automation engineers and technicians working with industrial control systems.

1

Create raw sensor signals dictionary

Create a dictionary called raw_signals with these exact entries: 'temp_sensor': 523, 'pressure_sensor': 1023, 'flow_sensor': 305

SCADA systems

# Create the raw_signals dictionary with exact sensor values
# Your code here

Need a hint?

Use curly braces to create a dictionary with keys and values exactly as shown.

2

Add noise threshold variable

Add a variable called noise_threshold and set it to 300 to filter out low signal noise

SCADA systems

raw_signals = {'temp_sensor': 523, 'pressure_sensor': 1023, 'flow_sensor': 305}
# Add noise_threshold variable set to 300
# Your code here

Need a hint?

Just create a variable named noise_threshold and assign 300 to it.

3

Condition and scale signals

Use a for loop with variables sensor and value to iterate over raw_signals.items(). Inside the loop, if value is greater than or equal to noise_threshold, scale the value by dividing by 10 and store it in a new dictionary called scaled_signals. Skip values below the threshold.

SCADA systems

raw_signals = {'temp_sensor': 523, 'pressure_sensor': 1023, 'flow_sensor': 305}
noise_threshold = 300
# Create scaled_signals dictionary and add scaled values for signals above noise_threshold
# Your code here

Need a hint?

Remember to create an empty dictionary before the loop. Use the exact variable names and conditions.

4

Print the scaled signals

Write a print statement to display the scaled_signals dictionary

SCADA systems

raw_signals = {'temp_sensor': 523, 'pressure_sensor': 1023, 'flow_sensor': 305}
noise_threshold = 300
scaled_signals = {}
for sensor, value in raw_signals.items():
    if value >= noise_threshold:
        scaled_signals[sensor] = value / 10
# Print the scaled_signals dictionary
# Your code here

Need a hint?

Use print(scaled_signals) exactly to show the final dictionary.