What is the technical principle of TOF laser ranging sensor?

ToF is the abbreviation of Time of Flight, which is literally translated as flight time. By continuously sending light pulses to the target, and then receiving the light returned from the object with a sensor, the distance of the target is obtained by detecting the flight (round-trip) time of these emitted and received light pulses .

TOF technology advantages：

1. Small size and small error

The TOF camera requires that the receiving end and the transmitting end are as close as possible. The closer they are, the smaller the errors caused by different transmitting and receiving paths are, which has a natural advantage from the perspective of compact size;

2. Output depth information directly

TOF can directly output depth information, and does not require similar calculations such as binocular stereo vision or structured light to obtain depth information.

3. Strong anti-interference

TOF is not affected by surface grayscale and features. Since sunlight is not modulated, TOF is also resistant to strong light. The accuracy of TOF does not change with the change of distance, and can basically be stabilized at the cm level.

TOF technical disadvantages：

1. Low resolution and high power consumption.

2. The power consumption needs to be improved.

3. Solution is not mature enough.

The laser ranging sensor uses the TOF technology principle to measure targets at high frequencies. The tof ranging module of Chengdu JRT Technology Co., Ltd. generally measures 100Hz, and products within 400Hz can be customized. Generally, our TOF is used for distance measurement, of course, it can also be applied to the field of robot obstacle avoidance navigation and positioning. For more product details, please contact us.