How does the sweeping robot use the ultrasonic principle to prevent the stairs from falling?

The working principle of the anti-falling sensor is that the bottom of the sweeper is equipped with a sensor, which is equipped with an infrared emitting tube and an infrared receiving tube to collect data, judge the real-time distance from the ground, and stop in time to prevent falling when the distance is sensed to be far away. To put it simply, the sensor originally looked at the ground as small as a few centimeters, and suddenly found that it stopped with dozens of centimeters.

Nowadays, good sweeping robots are equipped with four anti-fall sensors, just like Lanbao intelligent sweeping robot, which basically won't fall, but there are still some sweeping robots with only two sets of anti-fall sensors, so the probability of falling will be higher. You can pay attention to it when buying.

Sweeping robot, also known as automatic vacuum cleaner, intelligent vacuum cleaner, robot vacuum cleaner, etc. , a kind of intelligent household appliance, has certain artificial intelligence and can automatically clean the floor in the room. Generally, by brushing and vacuuming, the ground debris is first sucked into its own garbage storage box, thus completing the function of cleaning the ground. Generally speaking, robots that clean, vacuum and wipe the floor are also classified as sweeping robots.