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Laser distance sensor is a device that uses laser technology for non-contact distance measurement and is widely used in industrial automation, robotics, logistics, construction and other fields. Its basic principle is to emit a laser beam and measure the reflection time or optical path from the emission point to the target object, thereby calculating the distance of the object.
When selecting a laser distance sensor, customers should consider the following key parameters based on actual application requirements:
1. Measurement range
Select sensors based on measurement distance requirements:
Short distance: suitable for high-precision measurement in a small range (such as positioning of processing equipment).
Medium and long distance: suitable for scenarios such as industrial sites or logistics warehousing. Common ranges include 0.1m–30m, 0.1m–150m or longer.
2. Measurement accuracy and resolution
Measurement accuracy: indicates the deviation between the measurement result and the actual value (such as ±1mm or ±3mm).
Resolution: the smallest measurable unit, usually the smaller the more accurate (such as 0.1mm or 0.01mm).
3. Laser Class and Wavelength
Laser Class:
Class 1: The highest safety level, suitable for scenes with high requirements for eye safety.
Class 2: Short-term direct exposure to the eyes is allowed, but it still needs to be used with caution.
Wavelength: The working wavelength of the laser (such as 650nm red light, 850nm or 905nm infrared light).
4. Environmental adaptability
Lighting conditions:
Indoor use: Low light interference environment.
Outdoor use: Anti-strong light interference design.
Protection level: IP65, IP67 or higher, ensuring dust and water resistance.
Ambient temperature: The operating temperature range (such as -20°C to +70°C).
5. Output interface
Select the appropriate output interface according to system requirements:
Analog output: such as 4-20mA or 0-10V, suitable for continuous measurement.
Digital output: such as switch signal, suitable for specific distance triggering.
Communication interface: such as RS232, RS485, MODBUS, CAN, Ethernet, IO-Link, etc.
6. Measurement object characteristics
Reflectivity: Consider the reflective characteristics of the target object (such as highly reflective metal or low-reflective black objects).
Surface state: such as smooth, rough, transparent or inclined surfaces.
Anti-interference technology: whether it is necessary to resist interference such as color conditions and material changes.
7. Response speed
Sampling frequency: such as 10Hz, 50Hz, 500Hz and above, suitable for dynamic or static measurement scenarios.
8. Function requirements
Select whether the following functions are required:
Multi-point measurement: supports detection of multiple target points.
Distance calibration: automatically corrects measurement errors.
High-speed measurement: suitable for fast-moving objects.
Data storage and transmission function: supports data storage and transmission.
9. Installation method
Dimensions and installation space: confirm the installation location and space restrictions of the equipment.
Installation method: such as thread installation, rail installation, suction cup installation, etc.
10. Application scenario
Select the appropriate laser distance sensor according to the application scenario:
Industrial scenario: such as forklift, AGV navigation, warehousing logistics, etc.
Building scenario: such as tunnel measurement, bridge detection, etc.
Security monitoring: such as distance measurement in access control system.
Automotive industry: such as vehicle obstacle avoidance and distance monitoring in autonomous driving.
For application scenarios, please refer to:
Case review | Application of Kaijit high-frequency laser distance sensor Part 1
Case review | Application of Kaijit high-frequency laser distance sensor Part 2
Case review | Application of Kaijit high-frequency laser distance sensor Part 3
11. Special requirements
Vibration resistance: suitable for measurement in mechanical environment.
Environmental interference resistance: such as dust, rain, smoke, etc.
Multi-target recognition: detect the distance of multiple objects at the same time.
Summary
When selecting a laser distance sensor, customers should consider factors such as measurement range, accuracy, environmental adaptability, output interface, and response speed. If you need further assistance or specific model recommendations, please feel free to contact us!
KJT, the sensor expert beside you!
