Trend analysis and reporting in SCADA systems - Step-by-Step Execution

Process Flow - Trend analysis and reporting

Collect Data Points

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Store Data in Database

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Analyze Trends

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Generate Report

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Review & Act

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Repeat Cycle

Data is collected from sensors, stored, analyzed for trends, reported, and then reviewed for decisions.

Execution Sample

SCADA systems

1. Collect temperature readings every minute
2. Store readings in time-series database
3. Calculate average temperature over last hour
4. Generate report with trend graph
5. Send report to operator

This process collects sensor data, analyzes it for trends, and creates a report for operators.

Process Table

Step	Action	Data Input	Data Output	System State
1	Collect Data	Temperature sensor reading: 22.5°C	Stored reading in DB	DB has 1 new data point
2	Collect Data	Temperature sensor reading: 22.7°C	Stored reading in DB	DB has 2 new data points
3	Analyze Trends	Last 60 readings	Average temperature: 22.6°C	Trend data ready
4	Generate Report	Trend data	Report with graph created	Report ready for review
5	Send Report	Report	Report sent to operator	Operator notified
6	Repeat Cycle	Wait 1 minute	Next data collection starts	Cycle repeats

💡 Process repeats continuously for ongoing monitoring

Status Tracker

Variable	Start	After Step 1	After Step 2	After Step 3	After Step 4	After Step 5	Final
DB Data Points	0	1	2	2	2	2	2
Average Temperature	N/A	N/A	N/A	22.6°C	22.6°C	22.6°C	22.6°C
Report Status	Not created	Not created	Not created	Created	Sent	Sent	Sent

Key Moments - 2 Insights

Why does the average temperature only appear after step 3?

Because the system needs multiple data points collected (steps 1 and 2) before it can calculate the average in step 3, as shown in the execution_table rows 1-3.

What happens if the report is not sent to the operator?

The report remains ready but the operator is not notified, so no action can be taken. This is shown in step 4 vs step 5 in the execution_table.

Visual Quiz - 3 Questions

Look at the execution table, what is the system state after step 3?

A Trend data ready

B Report sent to operator

C Data collection started

D Report created but not sent

💡 Hint

Check the 'System State' column in row for step 3 in the execution_table

At which step does the system send the report to the operator?

A Step 2

B Step 5

C Step 4

D Step 6

💡 Hint

Look at the 'Action' and 'Data Output' columns in the execution_table for sending report

If the data collection interval changes from 1 minute to 5 minutes, how would the execution table change?

A Report generation would happen before data collection

B Average temperature calculation would be skipped

C Steps would take longer between repeats

D Data points stored would increase faster

💡 Hint

Consider the 'Repeat Cycle' timing in step 6 and how data collection frequency affects it

Concept Snapshot

Trend Analysis & Reporting in SCADA:
1. Collect sensor data regularly
2. Store data in a time-series database
3. Analyze data to find trends (e.g., averages)
4. Generate reports with graphs
5. Send reports to operators for action
6. Repeat continuously for monitoring

Full Transcript

Trend analysis and reporting in SCADA systems involves collecting sensor data at regular intervals, storing it in a database, analyzing it to detect trends such as average temperature, generating reports with visual graphs, and sending these reports to operators for review and action. This cycle repeats continuously to ensure ongoing monitoring and timely responses to system changes.