Xiaomi sweeping and mop robot 1T, visual navigation can also be very powerful

Xiaomi’s products in recent years have indeed not disappointed everyone, and the quality of the products is also satisfactory while cost-effective. At the end of 2020, Xiaomi launched a new sweeping and dragging robot 1t. As a blockbuster new product of Xiaomi’s ecology at the end of the year, is it still a product worth buying?


1. Can visual navigation work?
The sweeping robot can clean the room smoothly mainly through the navigation system. At present, the mainstream sweeping robot navigation on the market is through LDS laser navigation, and the other is visual navigation. The principle of laser navigation is very simple, that is, the sweeping robot emits light to the surroundings. After the light bounces back from the object, the distance between the machine and the obstacle is calculated to construct a three-dimensional map of the room. The advantage of this kind of laser navigation is accurate modeling, but it also has the disadvantage of high hardware cost and high maintenance cost.


The other is visual navigation. The accuracy of building maps is not as good as laser navigation. The problem of visual navigation is that it cannot be established but the advantage is low cost. I have experienced Xiaomi’s sweeping and dragging robot 1C before. This product uses visual navigation. I feel that 1C is qualified as an entry-level sweeping robot and can clean the whole house. It’s a pity that the map cannot be built, and there will be a relatively high probability of “finding” the terrain through collisions.


I feel that this sweeping and dragging robot 1T can be said to be an upgraded product of the previous 1C. Although it also uses visual navigation, this navigation is officially 3D VSLAM visual navigation, and it is equipped with TOF sensors to achieve navigation. TOF (time of flight) means the flight time of light. Its principle is similar to laser navigation. It also calculates the distance by calculating the actual light, and it has been used in photo shooting and focusing, and drone driving.


According to the official introduction, the 3D VSLAM visual navigation using TOF sensors can achieve a 4 times improvement in scanning range compared to the sweeping robot 1C, and a 5 times improvement in mapping accuracy. To actually experience the room cleaning process, the sweeping and mopping robot 1T will use a bow-shaped travel route, first search the entire room, and then clean the edges. Even if the light is not good at night, it can successfully complete the cleaning task.

The cleaning process along the edge of the house is also very fast. There are some fragmentary obstacles in the house and they can be cleverly avoided. I think that this visual navigation is also very good, and the accuracy is comparable to the effect of laser navigation.
With visual navigation and reasonable route design, I feel that the actual cleaning efficiency is quite high. The actual floor area of a 100 square meter house is about 30 square meters, and the speed of cleaning the whole house in about 40 minutes is satisfactory.


Also, the sweeping and dragging robot 1T is also equipped with S-cross 3D obstacle avoidance technology. This 3D obstacle avoidance is really good in the process of cleaning the room. For example, when cleaning the balcony, there is a child’s stroller on the balcony. The sweeping robot is just At the beginning, there was slight contact with the front wheel of the bicycle, and then the bicycle was cleverly bypassed, and it was able to avoid collision with furniture obstacles while cleaning.


In addition, the passing ability of the sweeping robot is also worthy of attention. The Mijia sweeping and mopping robot 1T is completely fine for passing obstacles below two centimeters and even moves back and forth at the joints of the floor, passing two rounds one after the other.


2. How about the performance of vacuuming ability?
The Mijia sweeping and dragging robot 1T uses a Japanese brand’s high-performance brushless motor. The suction power can reach 3000Pa. The suction power can be adjusted on the mobile phone APP. The default mid-range suction power personally feels completely enough. A few days ago at home It still sucks out so much dust and debris even after cleaning.


Even if I continue cleaning after a day, I still suck out so much debris. This kind of suction is satisfactory. It is hard to imagine the result of so much dust on the ground if it is sucked into the lungs.


Try to create some trouble for the sweeping and mopping robot 1T. It is a mixture of soot, shredded paper, and dust. This debris is no pressure in front of it. The unilateral side brush can sweep the debris on the edge to the middle position. It won’t push the trash aside, and the strong suction can not let go of every dust.


3. Is mopping the floor a useless function?
I feel that the mopping function requires heat. Too little water means no mopping, and too much water can damage the floor. I mainly use wooden floors in my home. Before, I didn’t use the mopping function of the sweeping robot very dry, because I was worried that too much water would deform the floor. In the process of trying the Mijia sweeping and mopping robot 1T, I found that the water volume control is just right. The ground surface it passes through will have a thin layer of a watermark, which can wipe the floor surface without leaving too much water. under.


The amount of water is so good that even if you put a piece of toilet paper on it, the paper will not get wet. After sucking the dust, it is better to wipe it with such a wet cloth.


Unpacking and product details you must want to see
The packaging of the Mijia sweeping and dragging robot 1T is the consistent Xiaomi style. Thanks to the product’s stable outer packaging protection, the sweeping and mop robot has no damage when received. The neatly packed various accessories in the packaging give a delicate feeling…


To sum up:
It has always been felt that visual navigation will not be the preferred navigation method for flagship robot sweeping robots, but the appearance of Mijia sweeping and dragging robot 1T personally thinks it is a very big improvement. The original visual navigation sweeping robot equipped with a TOF sensor can also complete laser navigation. The tasks that robots can accomplish, and they may do better. Reasonable route planning and advanced obstacle avoidance technology make Mijia sweeping and dragging robot 1T almost impossible to crash everywhere. On the contrary, it does have a higher level of sweeping and mopping at one go.