Advanced analytics and predictive maintenance in SCADA systems - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to start data collection from sensors.

SCADA systems

scada.start_data_collection([1])

Drag options to blanks, or click blank then click option'

Asensor_list

Bsensor_id

Cstart_time

Ddata_rate

Attempts:

3 left

💡 Hint

Common Mistakes

Using a single sensor ID instead of a list

Passing a time value instead of sensors

The start_data_collection function requires a list of sensors to collect data from, so sensor_list is the correct argument.

2fill in blank

medium

Complete the code to trigger predictive maintenance alert when threshold is exceeded.

SCADA systems

if sensor.reading > [1]:
    scada.trigger_alert('maintenance_required')

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Asensor.min_value

Bsensor.max_value

Csensor.threshold

Dsensor.limit

Attempts:

3 left

💡 Hint

Common Mistakes

Using minimum value instead of threshold

Using max_value which may not be the alert limit

The sensor.threshold is the correct value to compare the reading against to decide if maintenance is needed.

3fill in blank

hard

Fix the error in the code to correctly calculate the moving average of sensor data.

SCADA systems

moving_avg = sum(sensor.data[-[1]:]) / [1]

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Asample_count

Bdata_length

Cinterval

Dwindow_size

Attempts:

3 left

💡 Hint

Common Mistakes

Using different variables for slicing and division

Using total data length instead of window size

The window_size defines how many recent data points to average, so it should be used in both places.

4fill in blank

hard

Fill both blanks to filter sensor data for anomalies above a threshold.

SCADA systems

anomalies = [d for d in sensor.data if d [1] [2]]

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A>

Bsensor.threshold

C<

Dsensor.min_limit

Attempts:

3 left

💡 Hint

Common Mistakes

Using less than operator

Comparing to minimum limit instead of threshold

To find anomalies above the threshold, use the greater than operator and compare to sensor.threshold.

5fill in blank

hard

Fill all three blanks to create a dictionary of sensor IDs and their average readings above threshold.

SCADA systems

avg_readings = {sensor.[1]: sum(readings) / len(readings) for sensor, readings in data.items() if sum(readings) / len(readings) [2] [3]

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Aid

B>

Csensor.threshold

Dname

Attempts:

3 left

💡 Hint

Common Mistakes

Using sensor name instead of ID

Using less than operator

Comparing to wrong threshold value

The dictionary keys should be sensor IDs, and the average readings filtered by being greater than the sensor's threshold.