In modern industrial automation, high-precision and non-contact displacement measurement technologies are drawing increasing attention. Thanks to fast response and micron-level accuracy, laser displacement sensors have been widely applied in dimensional inspection, positioning, and 3D profile scanning. Weld Navigator®’s self-developed laser displacement sensor, based on the principle of laser triangulation, provides reliable and efficient solutions for displacement and dimensional measurement. Today, let’s take a closer look at how laser displacement sensors work.
Principle of Laser Triangulation
The core working principle of a laser displacement sensor is laser triangulation, which calculates the geometric relationship of the triangle formed by the emitted laser, reflected laser, and receiver to precisely determine the target’s positional changes. The main steps include:
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Laser emission: The sensor emits a laser spot or line onto the target surface.
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Reflection collection: The surface reflects the laser, which is then captured by a lens and projected onto the image sensor.
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Position calculation: As the distance between the sensor and the target changes, the reflection spot shifts on the image sensor.
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Triangulation: Based on geometric relations, the system quickly calculates the actual distance between the object and the sensor, enabling highly accurate displacement or height detection.
Laser displacement sensors not only eliminate wear and error caused by contact measurement but also operate stably under high-speed motion conditions.
Advantages of Weld Navigator® Laser Displacement Sensor
With long-term dedication to industrial inspection R&D and applications, Weld Navigator® has developed laser displacement sensors featuring several key advantages:
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High-precision detection: Advanced optical design and signal processing algorithms achieve micron-level accuracy.
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Versatile measurement modes: Available in both point-laser and line-scan models to meet diverse requirements, including thickness, flatness, contour, and displacement measurements.
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Stable and reliable: Strong anti-interference capability ensures stable measurement even on reflective metals, complex surfaces, or under strong light conditions.
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Easy integration: Standardized interfaces allow quick deployment in automated production lines, robotic inspection systems, and various industrial equipment.
Application Scenarios
Weld Navigator® laser displacement sensors have been widely applied across multiple industries:
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Dimensional inspection: Online measurement of height, thickness, and width of components.
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Flatness and warpage detection: Inspection of PCB boards and metal sheets for surface flatness.
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Profile scanning: Weld seam tracking and 3D profile measurement.
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Precise positioning: Vision guidance and positioning for robotic arms.
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Vibration analysis: Measurement of micro motor vibrations.
Thanks to their precise measurement results and excellent adaptability, Weld Navigator® laser displacement sensors are helping more companies achieve intelligent manufacturing and improved product quality.
With their high-precision and non-contact measurement capabilities, Weld Navigator® laser displacement sensors have become the ideal choice across industries. Weld Navigator® will continue to focus on technological innovation, providing customers with more stable and intelligent inspection solutions, and driving industrial automation to new heights.
