SupplyThree common laser measurement methods in industry
Key words: Phase method laser ranging, pulse method laser ranging, Triangulation method laser ranging
The principle of laser measurement is mainly based on the characteristic that the speed of light propagation remains constant. By measuring parameters such as the time required for the laser beam to trel from emission to reception or the reflection Angle, the distance between the target object and the measuring instrument or other related parameters can be calculated.
Depending on the measurement methods and application scenarios, laser measurement can be classified into various methods:
Phase method laser ranging: The distance is calculated by measuring the phase change of the laser reflection on the target object. When a laser beam hits a target object and is reflected back, its phase changes. By measuring this phase change, the distance can be calculated.
2. Pulsed laser ranging: The distance is calculated by measuring the reflection time of the laser on the target object and the round-trip time difference. A laser rangefinder emits a short-pulse laser beam. When the laser beam hits the target object and is reflected back, the receiver records the emission and reception times of the laser pulse, thereby calculating the distance.
3. Triangulation laser ranging: The distance is calculated by measuring the reflection Angle of the laser on the target object and the known distance between the laser and the receiver. This method typically employs an inclined laser beam to illuminate the target object and measures the Angle change between the reflected light and the incident light, thereby calculating the distance.
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