According to the PCB board editor, the rapid development of technology has made people's lives more and more convenient, especially after the emergence of smart devices, the consumer experience has also been raised to a higher level. Sweeping robots have become a regular smart hardware product in many users' homes, replacing the tedious household cleaning work, and are also an important category of current smart home products.

　　Since the birth of the first generation of commercial sweeping robots in Sweden in 1997, with the development of technology, sweeping robots have also carried out many plans, from the original single-roll brush design to the current planning scanning positioning cleaning, especially in After the sensors and algorithms are continuously updated and upgraded, the robot vacuum cleaner becomes more intelligent.

　　The reason why the sweeping robot can deal with the complex indoor environment, and can plan its own course of action, and at the same time can automatically avoid indoor obstacles, as if it has eyes, these are inseparable from the blessing of sensors.

　　Lidar (LDS)

　　To build accurate indoor maps and plan cleaning routes, mainly rely on lidar, which is usually installed on the head of the sweeping robot. Based on the information obtained after the laser is irradiated to the obstacle, it can accurately measure the distance, draw a complete indoor map, and plan the route.

　　With the addition of lidar, the sweeping robot can have more precise positioning, even in a dark environment. Of course, after installing the lidar, there are also two disadvantages. One is that it needs to be rotated frequently to detect the indoor environment, which makes the lidar easy to wear out;

　　Infrared photoelectric sensor

　　According to the PCB board editor, the purpose of installing this sensor is to facilitate the detection of the solution. For example, there is a group of stains on the ground, but after the cleaning is completed, I do not know whether it is cleaned. A certain wavelength of infrared light-emitting diodes can be used as the detection light source, and the transmitted light intensity of the stains on the ground can be detected to detect the degree of turbidity of the solution, and finally help the sweeping robot to judge whether it is cleaned.

　　In addition, the infrared sensor can also help the sweeping robot avoid obstacles. When an obstacle is detected, the sweeping robot will automatically slow down and touch the obstacle, and determine whether the obstacle is a passable obstacle such as curtains and tassel, and try to do as much as possible. Keep your smart devices and home safe while doing a complete cleaning.

　　PSD position sensor

　　A PSD position sensor is an optical detector that measures the continuous position of a light spot on the detector surface. It is a new type of photoelectric device, or called coordinate photocell. It is a non-segmented device that converts the spot position on the photosensitive surface into an electrical signal.

　　Acting on the sweeping robot, the main purpose is to let it emit modulated infrared light along the wall, so that the sweeping robot can better fit the wall or obstacles when it is on the wall and passing obstacles, ensuring that Cleaning has no dead ends.

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