As the name suggests, robot vacuum cleaner is a robot that can automatically sweep the floor. Generally speaking, after the robot vacuum cleaner is turned on, it will start from the charging base, and then scan the environment to draw a map.
How to scan and draw a map?
Working principle of robot vacuum cleaner:
1、Through the high-speed rotation of the motor, a vacuum is formed in the host, and the resulting high-speed air flow is used to suck garbage from the suction port. At this time, the speed of the air flow is as high as 240 revolutions per hour. When lice and other pests enter the host, they die due to high-speed collision with the inner wall of the dust suction pipe.
2. The garbage sucked into the sweeper is stored in the bag machine, and the air purified by the filter screen is discharged from the sweeper while cooling the motor.
3. The motor is the heart of the sweeper, and its performance can directly affect the reliability of the sweeper. In addition, the motor used by the sweeper rotates 20000 ~ 40000 revolutions per minute. For example, the motor speed of the electric fan is about 1800 ~ 3600 revolutions per minute, which shows how high the motor speed of the sweeper is.
4. The unit that correctly represents the performance of the sweeper is not the input power (watts, or Amperes), but the output power (suction power).
5. "Suction force" depends on the resultant force of wind force and vacuum force, but these two factors have opposite characteristics. In other words, when the wind force is large, the vacuum force becomes weak, and when the vacuum force is strong, the wind force becomes small. The maximum value of the resultant force of the two represents the "suction power" of the sweeper capacity, and the suction power is expressed in watts (W). This definition is an international standard for the performance of floor sweepers stipulated by the international standards organization (ISO), which is recognized all over the world. Japan, Germany, etc. use this unit as a unit representing the performance of the sweeper, but in other regions, the input power is directly misunderstood as a unit representing the performance of the sweeper.
6. Navigation
Laser navigation
Laser guided robot vacuum cleaner generates indoor map by laser ranging method, and reasonably plans the cleaning route on this basis. The top of the utility model is provided with a rotatable laser emitter and a supporting receiver, which can scan the distance from itself to each point on the boundary by emitting laser, so as to generate a digital map, and can be updated in real time according to the change of the position of furniture in the house.
Visual navigation
The robot vacuum cleaner with visual navigation uses the camera mounted on the top to scan the surrounding environment, and then combined with the infrared sensor, uses mathematical operation, geometry and triangulation to map the room, so as to navigate, judge the current moving route according to the position change of each landmark in the front and rear images, and update and adjust the environment model.
Robot vacuum cleaner bottom structure
While constantly scanning and drawing maps, robot vacuum cleaners are also cleaning. The side brush sweeps the garbage to the suction port, the robot vacuum cleaner sucks the garbage into the dust box in the machine body, and the tail gas is filtered by the filter screen and then discharged.
"Bow" cleaning track of robot vacuum cleaner
It is worth mentioning that robot vacuum cleaners are mostly planned for cleaning, and their walking routes are mostly bow shaped, so the coverage is higher. When the robot vacuum cleaner completes the cleaning work or the power is insufficient, it will automatically return to the charging base for charging to prepare for the next cleaning.
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