Laser displacement sensors utilize the principles of laser beam reflection and flight time to achieve high-precision measurement of object position, distance, displacement, and other parameters. They are widely used in multiple fields. The following is a detailed introduction to their common application areas and specific scenarios:

1、 Industrial Manufacturing and Processing

1. Size and morphology detection

Precision parts processing: online measurement of the dimensions (such as diameter, height, thickness) of precision parts such as gears, bearings, and threads to detect processing errors. For example, in the production of automobile engine cylinder blocks, laser displacement sensors can monitor the cylinder hole diameter in real time with an accuracy of micrometer level, ensuring assembly accuracy.

Surface contour measurement: used for 3D contour scanning of complex surfaces such as turbine blades and aerospace components, comparing CAD models to detect shape deviations, replacing traditional contact measurement, and avoiding damage to the workpiece surface.

Plate processing: During the rolling process of metal plates, the thickness and flatness of the plates are measured, and the spacing between the rollers is adjusted in real time to ensure the quality of the plates.

2. Processing process control

Laser cutting and welding: In laser cutting equipment, sensors monitor the surface height of the workpiece in real time, automatically adjust the focal length of the laser head, and ensure cutting accuracy; During welding, check the position and height of the weld seam, guide the trajectory of the welding gun, and avoid virtual welding and welding deviation.

Machine tool processing: Installed on CNC machine tools, it monitors displacement changes caused by tool wear, compensates for tool parameters in a timely manner, or measures real-time displacement of workpieces during the processing to achieve closed-loop control.

3. Equipment status monitoring

Vibration and displacement monitoring: Measure the bearing vibration of rotating equipment such as motors and fans to determine if there are any faults in the equipment (such as bearing wear and rotor imbalance); Monitor the displacement of the worktable of large machinery (such as injection molding machines) to ensure motion accuracy.

Mold monitoring: In the production of injection molding, die-casting and other molds, the deformation of the mold is detected to prevent product defects caused by mold wear or thermal deformation.

2、 Electronics and Semiconductors

1. Semiconductor manufacturing

Wafer inspection: Measure the thickness, flatness, and warpage of the wafer to ensure that the wafer quality meets the requirements of chip manufacturing; In the photolithography process, monitoring the displacement accuracy of the wafer frustum ensures the alignment accuracy of the photolithography pattern.

Packaging testing: Testing the height, spacing, and other parameters of wire bonding during the chip packaging process, as well as the coplanarity of the packaged device, to ensure packaging quality.

2. Production of electronic components

PCB board inspection: Measure the warpage, pad height, and positional accuracy of component mounting (such as component height detection during SMT mounting) of the PCB board to improve its reliability.

Display screen manufacturing: In the production of LCD and OLED screens, the thickness of the glass substrate, the curvature of the curved screen, and the assembly accuracy of the backlight module are tested.

3、 Logistics and Warehousing

1. Object positioning and sorting

Logistics sorting line: installed above sorting equipment to detect the height and volume of packages, used for automatic sorting and billing; In intelligent warehousing, locate the position of goods on the shelves and guide the AGV (Automated Guided Vehicle) to accurately pick up the goods.

Container inspection: Measure the height and width of the container to determine if it meets transportation standards, or monitor its position during container loading and unloading to avoid collisions.

2. Inventory management

Level monitoring: Measure the level of bulk materials (such as flour and cement) in the warehouse or finished products on the shelves, real-time grasp the inventory quantity, and achieve automated replenishment.

4、 Aerospace and Defense

1. Component inspection

Aircraft components: measuring the wear and deformation of aircraft engine blades and fuselage structural components, conducting fault diagnosis and maintenance; In aircraft manufacturing, the flatness and clearance of the fuselage skin are checked to ensure aerodynamic performance.

Spacecraft assembly: In the assembly process of satellites, rockets, and other spacecraft, high-precision measurement of the docking position and attitude of components is used to ensure assembly accuracy.

2. Target detection and tracking

Lidar: As the core component of LiDAR, it is used for environmental perception of drones and autonomous vehicles, achieving obstacle detection and 3D modeling; In the military field, it is used for target ranging and tracking.

5、 Medical and Life Sciences

1. Medical equipment

Surgical navigation: In minimally invasive surgery, laser displacement sensors are used to track the position of surgical instruments in real time, combined with medical imaging to achieve precise navigation, such as implant positioning in orthopedic surgery.

Rehabilitation equipment: measures the displacement and angle of the patient's joint movement, evaluates the rehabilitation effect, or provides real-time feedback in rehabilitation training equipment.

2. Biological testing

Cell research: measuring the morphological changes of cells (such as cell swelling and contraction) through laser displacement sensors to study cellular physiological processes; In a flow cytometer, the size and displacement of cells are detected for cell classification and counting.

6、 Architecture and Civil Engineering

1. Structural monitoring

Bridge and building monitoring: Long term monitoring of structural displacement, vibration, and settlement of bridges and high-rise buildings, assessment of structural safety, and timely detection of hidden dangers such as cracks and tilts.

Tunnel construction: During tunnel excavation, measure the deformation of the inner wall of the tunnel to prevent collapse; Detect the displacement of the shield tunneling machine and control the construction accuracy.

2. Construction measurement

Construction: Used for verticality measurement, template positioning, and ground flatness testing of high-rise buildings to improve construction quality; In indoor decoration, measure the flatness of walls and floors, and assist with tile laying and other tasks.

7、 Research and Education

1. Scientific research

Physics experiment: In mechanics, optics, and other experiments, measuring the displacement, velocity, and acceleration of an object, such as free fall experiments, harmonic vibration experiments, etc.

Materials research: Study the thermal expansion coefficient, elastic deformation and other characteristics of materials, and monitor the displacement changes of materials in real time under different conditions through laser displacement sensors.

2. Education and teaching

Experimental teaching equipment: As an experimental instrument for universities and research institutions, it helps students understand the principles and applications of displacement measurement, such as displacement measurement experiments in university physics experiments.

8、 Other fields

1. Robotics technology

Industrial robot: installed at the end of the robotic arm, detecting the position and shape of the workpiece, achieving precise grasping and assembly; Used for obstacle detection and distance measurement in service robots such as floor cleaning robots.

Special robots: In underwater robots and wall climbing robots, laser displacement sensors are used for environmental perception and navigation, such as measuring the distance to obstacles during underwater detection.

2. Agriculture and Forestry

Agricultural machinery: On agricultural harvesters, measure the height and density of crops and automatically adjust harvesting parameters; In the greenhouse, monitor the growth height of plants to achieve precise irrigation and fertilization.

Forestry surveying: measuring the height and diameter of trees, estimating timber accumulation, or using drones equipped with LiDAR for terrain and vegetation scanning in forest fire monitoring.

3. Transportation and Autonomous Driving

Traffic monitoring: measuring the speed and distance of road vehicles for traffic flow statistics and capturing violations; In intelligent transportation systems, detecting the structural displacement of bridges and tunnels ensures traffic safety.

Autonomous driving: As the core component of LiDAR, it is used for 3D modeling of the surrounding environment of vehicles and obstacle detection, achieving environmental perception in autonomous driving.