Principle and Application of Laser Ranging Module

 The principle of the laser ranging module is based on measuring the time it takes for a laser pulse to reach an object and return to the sensor. The specific process is as follows:

‌ Emits Laser Pulses : The laser ranging module emits short pulses of laser light at the target object, usually using a semiconductor laser (such as a laser diode) to emit narrow coherent light.

‌ Time-of-Flight Measurement : The laser pulse passes through the air and reaches the target object, when it hits the surface of the object, the laser pulse is reflected back to the module‌.
‌ Receive Reflected Pulse : The module has a built-in photodetector or receiver to detect the reflected laser pulse and convert it into an electrical signal‌.

‌ Time Measurement : Precise measurement of the time from emission to return of laser pulses by high-speed electronic circuits‌.

Distance Calculation : Using the speed of light (about 299,792 km/s in a vacuum) multiplied by half the time, calculate the distance of the target object‌.

‌ Output and Data Processing : Outputs the calculated distance as an analog voltage, a digital signal, or transmits it to a microcontroller or computer for further processing‌.

 

The Application Fields of Laser Ranging Module Include:

‌ Industrial Automation : Used to accurately measure the position and distance of objects on the production line, improve production efficiency and accuracy ‌.

 Robot Navigation : Helps robots accurately perceive the surrounding environment, achieve autonomous navigation and obstacle avoidance ‌.

 Building Survey : Measuring distance and height at the construction site to ensure construction accuracy ‌.

‌ Scientific Experiments : Used for distance measurement in various scientific experiments to ensure the accuracy of experimental data.

 

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