How to Leverage Big Data for Predictive Maintenance?

Article Written by:

Ganesh Veerappan

Created On:

June 28, 2023

Leveraging Big Data for Predictive Maintenance

Table of Contents:

Unplanned downtime is a silent killer of profits, and it bleeds money, whereas conventional preventive maintenance is an ineffective waste of resources in repairing what is not broken. Such a legacy model puts teams under high stress, reactive loopholes that interrupt supply chains and escalate inventory expenses.  

We are currently transitioning from industry 4.0 data-driven foresight of the decisions that are based on intuition to the ones that are maximized through the process of total assets reliability. This is not just mere maintenance but instead takes advantage of real-time knowledge in responding at the specific time when it is needed, as opposed to the calendar.  

But useless data is data without action, and here is where Cryotos comes in as the medium of transformation to streamline processes out of raw numbers. It can simplify complex analytics into practicable tasks so that technicians can, in reality, exploit big data to prevent downtimes.

Understanding the Core Concepts

To gain control of predictive maintenance (PdM), we must initially remove the buzzwords and examine the underpinning.

What is Big Data in Maintenance?

It isn't just "a lot of spreadsheets." In an industrial context, big data is defined by the 3 Vs:

  • Volume: The number of logs that your machinery produces per second.
  • Velocity: This is the rate at which data is flowing out of IoT devices (in real-time).
  • Variety: The types of data supplied include vibration analysis, acoustic signatures, thermal measurements, and oil quality measurements.

The Why: Predictive vs. Preventive

The contrast is very basic and significant.

Preventive Maintenance is Time-based (e.g. Change oil after every three months.) This is ideal in avoiding failure, but most of the time results in over-maintenance.

Predictive Maintenance is Condition-based. (e.g., "Replace oil when it has become viscous less than X.) This is the best place of intervention- correcting the asset just when it is required and maximizing its life span.

Why Big Data is Key for Predictive Maintenance

Big data enables us to perform things which are beyond human capability.

  • Uncovering Hidden Patterns: Algorithms can discover the presence of subtle relationships, such as a particular vibration frequency that only appears when the humidity increases, and this is something that a human technician could never assemble.
  • Calculated Remaining Useful Life (RUL): We do not just guess that it will break soon but are informed about it: This bearing has a probability of 85% of breaking down within 48 hours (about 4 days). This enables accurate scheduling in planned downtime periods.
  • Root Cause Analysis: You do not merely correct the failure, but you use history to look at the circumstances that preceded it. This assists in fixing the root cause, which will eliminate recurrence.
  • Scalability: A reliability engineer can inspect five machines an hour. An algorithm can monitor five thousand assets simultaneously, 24/7.

Step-by-Step Implementation Guide

Moving to a big data approach doesn't happen overnight. It requires a structured implementation.

Step 1: Asset Criticality Ranking

Do not try to monitor everything. Putting vibration sensors on the breakroom exhaust fan is a waste of resources. Focus on the top 20% of assets that cause 80% of your downtime and maintenance costs.

Step 2: Data Acquisition & Sensor Selection

Select the appropriate input to the failure mode that you are attempting to capture.

  • Rotating equipment: Vibration and acoustic sensors.
  • Electrical panels: Thermal imaging and power variation.
  • Hydraulics: Sensors of pressure and oil particles.

Step 3: Establish Baselines & Anomaly Detection

You have to teach the system what "Normal" looks like. Big data requires a baseline period where the algorithms learn the standard operating temperature or vibration frequency of a machine, so it can flag deviations later.

Step 4: Integration with CMMS (The Action Layer)

This is the most critical step. A red light on a dashboard does not fix a machine; a technician does. You need to integrate your data stream with a system like Cryotos. When a data spike occurs, then CMMS should automatically trigger a work order, assign it to the right technician, and attach the relevant fault data.

Step 5: The Feedback Loop

After the repair, the technician closes the work order. This data must go back into the model to validate the prediction. Did the machine actually have a fault? This makes the algorithm smarter over time.

How Cryotos Facilitates PdM

The central nervous system of this data is designed to be Cryotos. It does the heavy work of business value translation of the bytes.

  • The Central Hub: Cryotos is connected to sensors, PLCs and SCADA systems via the IoT Meter Reading module. It consumes the data and compares it to your pre-determined thresholds.
  • Automated Workflows: Once a threshold is violated (e.g. temperature higher than 80 °C), Cryotos will not just email you. It will automatically create a work order, prioritize it by the criticality of assets, and inform the team either through WhatsApp or the mobile app.
  • Mobile Capability: The big data insights are not stored in the server room. They are forwarded to the mobile phone of the technician on the shop floor, where there are annotated photographs, checklists, and asset history.

Key Technologies: AI, IoT, and Machine Learning

Three technologies have to operate together in order to utilize big data fully. Consider it as a biological system:

IoT (The Nervous System)

Real-time physical data is gathered by the Internet of Things. The smart sensors are nerve endings that sense vibration, heat, and sound and transport that reality to the cloud.

Machine Learning (The Brain)

Machine Learning (ML) is a process that examines the history of massive data to interpret patterns. It uses specific algorithms:

  • Anomaly Detection: Notifies suspicious behavior (e.g., "This motor is vibrating 2% more than it was last month).
  • Regression Models: The Regression Models are used to predict the Remaining Useful Life (RUL) of the asset.

Artificial Intelligence (The Decision Maker)

AI takes us out of analysis and action. In a Prescriptive Maintenance model, AI does not simply inform you that the machine is faulty but suggests the fix. As an example, Cryotos applies Generative AI to assist in building work orders and recommending solutions, using past repair data.

Conclusion

Big Data is not only a technological strategy of big companies, but also the future of sustainable, cost-effective maintenance. Moving away instead of reactive firefighting, to data-driven prediction, not only do you extend the life of your assets, but you also improve the level of safety and ultimately, your bottom line may increase significantly.

Your machine already has the data. The system to interpret it is the only lacking element.

Willing to transform your information to prevent downtime? Learn how Cryotos could use the power of big data to mechanize your preventive maintenance and protect your prime assets.

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