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Measurement System

The LRM (Laser Reflection Monitoring) system diagnoses weld quality by collecting and analyzing real-time waveform variations in plasma, temperature, and laser reflection during the welding process. Highly compatible with existing equipment, it instantly detects defects such as insufficient penetration, porosity, and surface cracks on the shop floor, ensuring stable quality control.

In advanced manufacturing lines—such as secondary batteries, automotive, and electronics—where mass production and high-precision real-time quality verification are both required, it plays a key role in tracking and digitizing defects in real time, enabling a complete 100% inspection system.

  • Real-time quality monitoring
  • Prevents defective weld outflow, reducing manufacturing costs
  • Improved reliability through in-line 100% inspection
  • Systematic history management based on welding data
  • Excellent cost-effectiveness and on-site compatibility

Key Features

Realtime Weld Defect Detection

Detects insufficient penetration, porosity, power drop, and surface cracks in real time.

Validated Waveform Analysis

Compares waveforms against reference standards using a proven algorithm.

Multi-Wavelength Analysis

Analyzes plasma, temperature, and reflected light signals to evaluate weld condition.

Realtime Judgment & I/O Output

Outputs OK/NG via I/O signals for defect ejection and equipment interlock.

ILRM 장비 이미지 1
ILRM 장비 이미지 2
ILRM 장비 이미지 3

Applications

Secondary Battery

Electrode tab and foil welding, cell can top/side cap welding, and busbar laser welding quality monitoring for module and pack assembly

Automotive & Electrical 

Hairpin motor coil welding, and laser welding inspection for inverter/converter terminals and electrical connectors

Electronics & Precision

Micro-welding inspection for mobile/wearable micro-components, IT device internal metal parts, and precision PCB connector pins

Other Laser & Assembly

In-line 100% inspection for dissimilar material joining (e.g., copper-aluminum), and CW/pulsed laser welding of general mechanical parts

Specifications

Category
 Item
 Spec
Basic
 System Type
 Real-time Laser Welding Monitoring System (LRM)
Application
 CW & Pulsed laser welding
Inspection Targets
 Battery cells/modules/packs, automotive electrical parts, precision electronics
Inspection Items
 Penetration deficiency, porosity, power fluctuation, surface cracks
Sensor / Optics Sensor Type High-sensitivity multi-sensor system
Wavelength Range
 Plasma, temperature, laser reflection
Mounting
Integrated with welding head & scanner optics
Inspection
 Judgment Method
Multi-channel real-time parallel analysis
Cycle Time
In-line, real-time (no takt time impact)
Laser Sources
 IR, Blue, Green, and other major industrial wavelengths
Algorithm / SW
 Inspection Method
 Real-time waveform comparison
Criteria Setup
Auto reference optimization via teaching samples
Result Display
Real-time OK/NG judgment & data storage
Interface / Logging
 Communication
 Digital I/O, optional Fieldbus
Integration
 PLC interlock, MES support
Data Management
 Weld history & statistical analysis
Environment
 Power
 AC 220V / DC 24V
Operating Environment
 Optimized for in-line manufacturing