On September 19, Stone Technology, the R&D team of Mijia sweeping robot, officially released the second generation of Mijia sweeping robot - Stone sweeping robot. This time, Stone Technology launched its own brand, apparently intended to open up new markets, and added the mopping function, further strengthening its functionality. We also got the construction machine of the stone sweeping robot before the official launch, and let's see how powerful this second-generation new product is.

Appearance design

The outer package is made of kraft paper, and the overall design is relatively simple. After opening, the big logo of Stone Technology is visible, and there are some simple descriptions about the mopping function on the top.

The stone sweeping robot is very similar to the Mijia sweeping robot in appearance (after all, they are all from the same manufacturer), but thanks to the upgrading of parts and design, the overall size of the stone robot is slightly smaller.

Compared with the change of key layout or the change of sensor position, I believe that more consumers will notice that this time the sweeping robot no longer has the logo of Mijia, but instead has the logo of Stone Technology.

Stone Technology still believes that the best solution for the current domestic sweeping robot is laser planning, so the stone sweeping robot is equipped with the same LDS laser ranging sensor as the Mijia sweeping robot, which can scan at the speed of 5 × 360 °/s to obtain distance information. When the laser is projected onto an obstacle, a light spot will be formed in the sensor. At the same time, the image sensor will calculate the center distance to the laser ranging sensor according to the pixel number of the light spot. The "eye" of the sweeping robot is here.

The upper cover can be lifted easily, and the dust box and main brush cleaning tools can be hidden here, which can be simply removed according to the instructions. The modular design is convenient for later maintenance and replacement.

Looking at the bottom, the overall structure is not very different from the Mijia sweeping robot, but the stone technology has been upgraded: for example, the maximum suction is increased from 1800pa to 2000pa, the obstacle surmounting ability is increased to 2cm, and the omnidirectional pressure sensor is added to improve the ability to escape.

The obvious change is that the charging shock is arranged on both sides of the guide wheel to achieve better charging and reduce the occupied area.

The main brush, buckle, etc. have also been designed in a modular way, so it is very convenient to clean and replace them later.

The newly added mopping module of the stone sweeping robot can be directly installed by aligning the gap, and it is effortless to install or remove.

Thanks to the new design of charging contacts, the size of the charging base is greatly reduced, which occupies less space and is more practical than the Mijia sweeping robot.

App experience

As a member of Xiaomi ecological chain, the stone sweeping robot also supports the use of Mijia for remote control. After automatic scanning or manual addition, I can see the stone sweeping robot in my device. Click it to enter the detailed settings. Facing a strange place, the stone sweeping robot will automatically scan out a rough map for users to view, which is the same as the previous Mijia sweeping robot.

In terms of cleaning, with the help of LDS laser ranging sensor and original SLAM algorithm, the room map is accurately and real-time constructed and the cleaning route is planned. The measured results are satisfactory, and the error is basically within the acceptable range. With the help of the sensor of the stone sweeping robot, the cleaning work can be carried out normally. In addition, this update has added district cleaning and "where to go" cleaning, which are popular among users. The function has been further enhanced to meet the needs of different users.

Of course, similar to the use of mobile phones as remote controls, and the setting of cleaning modes, there are also a lot of them. There are only many stone sweeping robots in Mijia's sweeping robot. The consumption status of consumables can also be listed, so that users can check whether replacement is required at any time.

The power of sweeping

Previously, the sweeping ability of Mijia's sweeping robot was impressive. What about the strength of the stone sweeping robot this time? With the most powerful MAX cleaning mode, the noise is acceptable and not very annoying; The cleaning result is also satisfactory. The hair and debris on the floor have been cleaned. I feel it is better than the Mijia sweeping robot. Thanks to the SLAM algorithm of Stone Technology, there are no problems in general corners; Due to the size of the sweeping robot, some special corners can not be cleaned, which is not a problem of insufficient cleaning capacity or poor software control.

As for the mopping function added by Stone Technology this time, the official propaganda has adopted a new plant bionic wet mopping system, which makes the water flowing evenly when sweeping and mopping. To be honest, the author was not confident at the beginning. However, the actual measurement is amazing. When dragging the floor, the water outlet is well controlled, basically reaching the level of "drag and dry" (wait a little about 10 seconds). There is no dead angle with the Z-shaped trajectory of SLAM algorithm. Use the stone sweeping robot to mop the floor after sweeping. The author believes that as long as there is no obsessive-compulsive disorder, users will be satisfied with its performance.

summary

After experiencing the stone sweeping robot, a heavy handed product of stone technology, we can feel the upgrade compared with Mijia's sweeping robot, which occupies less space, improves the sweeping function and newly added mopping function. In particular, the mopping function was originally thought to be just a gimmick to increase the selling points, but the actual performance can be said to be unexpected, which can meet the general use. If you are too lazy to do housework, the stone sweeping robot can be said to be a customized product for you.

Maybe it is because of the engineering machine. The mopping module of our machine has some water seepage, and the recharge function has been unsuccessful for two or three times. I hope Stone Technology can improve these problems before the official delivery and provide a better use experience.

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