Keywish Hummer-Bot Instruction Manual page 53

and avoids the obstacle beautifully. The schematic diagram of the sensor is shown in Fig.3.2.8. Infrared
detector can be divided into active and passive according to its working mode.
Active infrared detector is equipped with infrared light source, it can detect the location of the object
through covering the light source, reflection, refraction and other optical means.
Passive infrared detector has no light source, and it can measure the position, temperature, or infrared
imaging of the detected object by receiving the characteristic spectral radiation of the detected object.
Fig.3.2.8 Infrared obstacle avoidance schematic diagram
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