Infrared Distance Sensor (Tof) - dji Robomaster EP Core User Manual

ROBOMASTER EP Core User Manual

Infrared Distance Sensor (TOF)

Introduction
The infrared distance sensor calculates the distance between a sensor and an object by measuring the
time it takes an infrared light to reach the object and return to the sensor. The infrared distance sensor
consists of an illumination unit, optical receiver, and signal processing system. The illumination unit emits
a beam of modulated near-infrared light. When the beam of light is reflected by an object, the reflected
beam will be directed through the optical receiver and converted into a current. The receiver transmits
the generated electric signal to the signal processing system for demodulation and distance calculation.
The infrared distance sensor has a field-of view (FOV) of 20° and measures the distance of objects
within the FOV. If there are multiple objects at different distances inside the FOV, the measured distance
will be within the range of the nearest object and the farthest object. The actual measurement data is
related to the size ratio and reflectivity of the object. Users can learn more about the infrared distance
sensor through practice.
With a measurement range of 0.1-10 meters, the infrared distance sensor accurately measures within
a margin of error of 5%. The addition of programmable modules in Scratch also provides reliable
distance measurement information. This enables the robot to sense its environment and avoid obstacles,
deepening users' understanding of advanced autonomous driving principles.
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1. CAN Bus Port
Connect to the robot via a CAN bus cable.
2. Serial Port
a) The serial signal supports a level of 3.3 V.
b) The input voltage is 5-12.6 V.
Mounting the Infrared Distance Sensor
The infrared distance sensor can be mounted on the chassis extension platform with the use of the
TOF mounting bracket. If mounted on the front of the extension platform, the bracket must first be
fixed to the straight connecting rod.
If the infrared distance sensor is required to be mounted on the rear of the robot, users must design
their own parts and rearrange the position of the intelligent controller and infrared distance sensor
without affecting the installation or connection of other parts.
1. To assemble a TOF module, use one M3-C screw to fix the infrared distance sensor to the TOF
mounting bracket.
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