First, look at this product, Pu Sang Nick M6. As the flagship product of Pu Sang Nick M series, M6 continues its long-standing scientific and technological design in appearance design. There are black spots on the titanium gray upper cover plate, and different angles will show different metallic luster.

The main body of the fuselage has only three buttons, namely "fixed-point cleaning", "on/off" and "intelligent charging", which basically meet the daily needs of users, and M6 can be controlled with one button to realize functions.

In the control tower at the top of the fuselage, a wireless carrier and a laser cruise positioning scanning device are integrated. Wireless carrier has strong anti-interference ability and will not be disturbed by home scenes, while laser cruise can scan the whole house and remember the layout of the whole house. The combination of the two can significantly improve the positioning accuracy and real-time performance.

The dust box/water tank in LDS M6 can only be seen when the upper cover is fully opened. This design will bring inconvenience to operation or loose structure to a certain extent.

At the bottom of Psanik M6, there is a guide wheel and two large obstacle-crossing wheels, in addition to a central cleaning brush and a snap-in side brush.

2, the puppy R55 sweeping robot

Next, let's take a look at the R55 sweeping robot from the puppy. In terms of appearance, the overall color of the R55 sweeping robot is gray. Coupled with the texture of matte painting and the shallow design of concentric circles, the face value can still meet our needs.

There are only two buttons on the front, namely "Smart Recharge" and "On/Off". There is a long area in the center of the top of the product. Just take it out from both sides and you can see the dust box and water tank inside. The design is convenient.

Inside the control tower, the puppy R55 sweeping robot incorporates a new generation of LDS laser scanning function, with a scanning range of 6X360 and ranging capability of 2160/s, which is more sophisticated than the LDS laser scanning products on the market. But having a single laser scanning function has also become a relative weakness of the puppy R55, which we will mention later.

The bottom of R55 has a regular shape: a guide wheel, two obstacle-crossing wheels and two side brushes. It is worth mentioning that the side brush of the puppy R55 is fixed by means of screws and knobs, which is more secure than the buckle installation. But if the market is used frequently, it will also cause some trouble.

3. Stone cleaning robot

As a rising star in the field of sweeping robots, the stone sweeping robot continues the high value level of Mijia series, so the stone sweeping robot is also the highest value product among the four sweeping robot products.

The whole white design and the bright ribbons around it have a strong visual impact, which also makes the stone sweeping robot present a different product temperament from other products. There are three buttons on the front, namely "Intelligent Recharge", "On/Off" and "Area Cleaning".

In the way of taking out the dust box, the stone sweeping robot adopts a half-open cover design, which is also the most convenient and safe way at present. After opening, you can see the dust box/water tank and special dust brush inside, which is still a very intimate design.

There is a laser scanning sensor in the control tower of the stone sweeping robot, which scans the indoor environment with the specification of 5x360 and gives distance feedback.

The bottom of the stone sweeping robot is the same simple design, with a guide wheel, two obstacle-crossing wheels and an edge brush, which are installed by means of screws and knobs.

4. Cobos DN55 sweeping robot

Cobos sweeping robot is definitely the most recognizable of these products. First of all, because of the overall light gray color scheme, the lattice arrangement on the top cover and the dark gray panel bring strong color contrast. Different from the other three products, the top cover of Cobos DN55 has only one switch button, which is insufficient for independent operation.

The top cover of DN55 is semi-open, which is a convenient operation mode like the stone sweeping robot, and the dust box is simple and convenient to take out. After opening the top cover, there is a red power switch. Only when the red power switch is turned on can DN55 be charged. This design is still relatively cumbersome.

The control tower of Cobos DN55 adopts the shape of approximate rounded rectangle, which also echoes the shape of the machine itself. DN55 is equipped with LDS laser scanning function. The ranging of 1800 times per second and the detection distance of 8m improve the accuracy by 10%. There is also a guide wheel, two obstacle-crossing wheels and two snap-in side brushes at the bottom of DN55.

After introducing the appearance of the four products, let's make a summary. In terms of appearance value, the stone sweeping robot stands out among the four products with its pure white and exquisite appearance. In terms of hardware configuration, the puppies R55 and Cobos DN55 won by virtue of the larger cleaning area brought by two side brushes. Pu Sang Nick LDS M6 is the most powerful of the four products. LDS laser scanning and wireless carrier technology can be used for laser construction and furniture obstacle avoidance in home environment, effectively avoiding collisions. In addition, it is worth mentioning that among the four products, only the puppy R55 has no buffer belt in appearance, which will directly impact the main body of the fuselage in case of collision, causing troubles to users to some extent.