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Laser Ranging Sensor Based on TOF Algorithms

2019-08-13
TOF is short for Time of Flight. Its measuring principle is to use the sensor to send laser photons to the target continuously, and then use the sensor to receive photons returned from the object, calculate the round-trip time and get the measured distance.

With people's familiarity with light, optical ranging has gradually begun to occupy the sensing market. Laser ranging is one of the main development directions. Compared with infrared and ultrasound, laser ranging has advantages on the one hand. Because TOF calculates the distance between the measured object and the transmitter by measuring the passage time of laser photons, it is not affected by the size, color and reflectivity of the target, so TOF is ahead of traditional proximity sensors in distance and accuracy. On the other hand, through the innovation of the architecture and optimization of the algorithm, TOF achieves a new "qualitative change" in ranging, accuracy and size, which makes the measurement distance farther, frequency higher and power consumption lower.

In fact, TOF technology is not only applied in laser ranging sensors, but also as one of the three mainstream schemes in the field of 3D depth vision. In recent years, TOF depth sensing technology has gradually emerged in many fields, such as smartphone rear camera, VR/AR gesture interaction, automotive electronic ADAS, security monitoring and new retail. Display one's skill to the full.

The TOF laser range finder produced by JRT can measure the longest distance up to 15 meters, and has a wide range of applications, including automobile manufacturing, automobile parts manufacturing, construction machinery, logistics packaging, stereo garage, etc.

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