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Case Study · IoT   Embedded Hardware   Industrial

Current
Detection
Sensor System

Smart non-invasive current monitoring for industrial welding machines — real-time data capture, wireless transmission, and offline storage without modifying machine wiring.

Industry
Industrial Manufacturing
Domain
Welding Machine IoT
Our Role
Full Product Engineering
Platforms
Embedded · Wi-Fi · Cloud
System Architecture

Non-invasive sensor → acquisition hardware → cloud server

Welding
Machine
Hall Effect
Sensor
Acquisition
Hardware
Cloud
Server
0
Wiring Modifications
AC/DC
Current Detection
9
Data Fields per Pulse
OTA
Remote Firmware Updates
Project Overview

Smart Current Monitoring for Welding Machines

At Inurum Technologies, we developed a smart current detection sensor system for industrial welding machines. The system monitors welding current in real time without modifying existing machine wiring.

The client needed a reliable system to detect and record current flow during welding operations. Traditional manual inspection was insufficient to verify every welding pulse, and there was no centralized way to collect current data from machines across the factory floor.

We designed a non-invasive solution using a split-core Hall Effect sensor installed around the welding output cable. The sensor captures current data during every welding cycle — the hardware processes it and transmits wirelessly to the server for monitoring, reporting, and analysis.

Core Capability
Non-invasive split-core sensor
Real-time welding current capture
Wi-Fi data transmission (JSON/HTTP)
Offline storage with auto-retry
Bluetooth mobile app setup
OTA firmware update support
The Problem

No Visibility Into Welding Performance

Industrial welding machines require accurate current monitoring to ensure consistent weld quality. Without real-time data, quality issues go undetected until inspection — by which point rework costs are already high.

  • ISSUE_01

    No real-time current visibility during welding operations

  • ISSUE_02

    No automated welding data logging — all records were manual

  • ISSUE_03

    Manual dependency for quality checks created bottlenecks

  • ISSUE_04

    No easy way to track welding pulse performance over time

  • ISSUE_05

    Risk of inconsistent welding output across production shifts

  • ISSUE_06

    No remote monitoring — engineers had to be physically present

  • ISSUE_07

    Existing machine wiring could not be modified for safety reasons

Our Solution

Non-Invasive. Wireless. Always On.

We built a current detection sensor system that installs without cutting or changing machine wiring. The split-core Hall Effect sensor clamps around the welding output cable and detects current inductively — no electrical contact required.

The acquisition hardware captures the sensor signal and calculates key parameters for every welding pulse: peak current, average current, pulse duration, residual current, and current variation.

All data is transmitted to the server using Wi-Fi in JSON format via HTTP POST. If connectivity is unavailable, data is stored locally and automatically uploaded when the connection is restored.

Non-invasive current detection sensor hardware unit with LCD screen displaying live welding data including job ID, max current, duration, mean and residual values
Key Features

What the System Delivers

Core capabilities of the IoT current detection sensor — from non-invasive installation to real-time cloud data transmission.

Non-Invasive Detection
Split-core Hall Effect sensor clamps onto the output cable. No cutting, no wiring changes, no machine downtime during install.
AC/DC Current Monitoring
Supports both AC and DC welding current types — works across resistive, MIG, TIG, and spot welding machines.
Real-Time Pulse Capture
Detects and records every welding cycle the moment it occurs — no polling delay, no missed pulses.
Wi-Fi Data Transmission
All captured data is sent to the server via HTTP POST in JSON format — lightweight, standard, and easy to integrate.
Offline Storage + Auto-Retry
When Wi-Fi is unavailable, data is stored locally. Upload resumes automatically when connectivity is restored — zero data loss.
Bluetooth Setup via Mobile App
Initial configuration — Wi-Fi credentials, server URL, device ID — is done through a mobile app over Bluetooth. No serial cable needed.
OTA Firmware Updates
Update device firmware remotely over Wi-Fi. No physical access required — deploy fixes and improvements across all units instantly.
Pulse Curve Sampling
Captures current waveform samples per pulse — useful for shape analysis, quality profiling, and detecting abnormal welds.
How It Works

From Cable to Cloud

7 automated steps — no operator input required during production.

01
Sensor Install
Clamp Hall Effect sensor on output cable. No wiring changes.
02
Current Detection
Sensor reads magnetic field during welding — no electrical contact.
03
Signal Acquisition
Hardware digitizes the analog sensor signal.
04
Calculation
Firmware calculates peak, average, duration, residual & variation.
05
JSON Payload
Parameters packed with device ID, job ID & timestamp.
06
Wi-Fi Upload
HTTP POST to cloud server. Server confirms receipt.
07
Offline Fallback
Saved locally if offline. Auto-retransmit on reconnect.
Product Demo

See It
In Action

The sensor unit running live on a welding machine — capturing current data, logging each pulse, and transmitting to the server in real time.

Hardware & Technology

What's Inside the System

The system is built around proven industrial components — shielded sensor cabling, a Wi-Fi-enabled controller, and an internal power supply designed for continuous factory operation.

Hardware Components
Central Acquisition Unit Split-Core Hall Effect Sensor Wi-Fi Enabled Controller Bluetooth Module Internal Power Supply Shielded Sensor Cable
Communication Protocols
Wi-Fi 802.11 HTTP POST JSON Bluetooth BLE OTA Update
Sensing Technology
Hall Effect Induction AC Current Detection DC Current Detection Pulse Curve Sampling
Storage & Reliability
Local Flash Storage Offline Queue Auto-Retry Logic
Business Benefits

What Manufacturers Gain

Better Welding Quality Control
Every pulse is logged and compared — anomalies are detected automatically, not during final inspection.
Real-Time Production Monitoring
Live visibility into machine activity across shifts — track output rates, idle time, and machine utilization.
Reduced Manual Inspection
Automated data logging eliminates manual record-keeping — inspectors focus only on flagged anomalies.
Improved Traceability
Every weld is tied to a job ID, device ID, and timestamp — full production traceability for compliance and warranty.
Easy Installation
No machine downtime, no electrician required. Clamp-on sensor installs in minutes on any welding machine.
Scalable Across Machines
Deploy to one machine or an entire production line. Each unit operates independently and reports to the same server.
Applications

Where This System Fits

Designed for industrial welding, the underlying architecture applies to any current-monitoring use case in factory IoT environments.

  • USE_CASE

    Welding machine monitoring and quality assurance

  • USE_CASE

    Industrial automation and smart factory IoT systems

  • USE_CASE

    Production line monitoring and output tracking

  • USE_CASE

    Quality control and weld traceability systems

  • USE_CASE

    Current logging for predictive maintenance

Final Outcome

Result

The current detection sensor system gave the client a reliable way to monitor welding current in real time. With non-invasive installation, wireless data transfer, and offline storage support, the solution improved visibility, traceability, and quality control for industrial welding operations.

Deployable to any machine without modifying existing infrastructure — the system scales from a single unit to an entire production floor with no additional wiring or downtime.

Custom IoT Solutions

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Monitoring Solution?

Inurum Technologies builds custom IoT, embedded, firmware, mobile app, and cloud-based monitoring solutions for industrial use cases. Let's build your next smart connected product.