We got feedback from SLAMTEC and their customers who bought Mapper M1M1. Let’s take a look at why they chose Mapper M1M1 TOF Laser Scanner!

All the reviews below are provided by SLAMTEC’s customer’s feedbacks. Thank you all to help us know Mapper M1M1 better!

Stable distance measurement

On the M1M1 webpage, it said that the SLAMTEC Mapper is a built-in “positioning and mapping” laser mapping sensor, so many users compare the measured distance and the official calibration distance when they get the Mapper. Let’s see if there is a gap.

Indoor:

Radar distance

LaserScan ls = robotPlatform.getLaserScan(); 
String head_tip = "distance angle valid"; 
for (LaserPoint lp: ls.getLaserPoints()) { 
    String lp_txt = String.valueOf(lp.getDistance()) + " " + String.valueOf(lp.getAngle()) + " " + (lp.isValid()? "true":"false") + "\n"; 
    outStream.write(lp_txt.getBytes());
 }

From the data taken out, it can be found that the effective radar distance can be as far as 17m, and the farther distance cannot be tested completely due to the limitation of the environment, but it is basically the same as the official website.

Fang Zhao

The user performs a limit detection distance test on the aisle shown in the above figure.
The detection distance is controlled by the back and forth movement of a baffle, and the detection limit distance of Mapper is about 20.7 m, which is consistent with the radar detection distance of 20 m on key performance indicators.

Outdoor

The actual outdoor measurement radius is also the same:

In practical terms, SLAMTEC Mapper M1M1’s scanning distance is about 17.6m, which is consistent with the publicity by SLAMTEC.

Xuecheng Qian

Friendly to beginners, easily to get started

M1M1 is quite convenient to get started. People who have never used a laser scanner can also experience its perfect function and effect by RobotStudio software through a simple tutorial setup.

M1M1 is ideal for testing with a laptop-equipped car. You can easily use the laptop to connect SLAM hotspot published by M1M1. But if you use a desktop computer, you need to configure a dedicated wireless network card.

Guolai Wang

The overall performance of the M1M1 is good, and the wifi function is very convenient. It can be used not only as an ordinary laser scanner but also as a development kit for integrating SLAM algorithms. It is suitable for beginners and can meet the needs of simple SLAM functions. The speed of movement is 1m/s and the accuracy is 5cm. It is not suitable for SLAM at high speed, but indoor navigation is completely sufficient.

Nan Zhang
Development in the ROS environment

Excellent mapping performance

High-quality maps building in the large scenes

I carried out a hand-held construction in a room with an environmental area of 500 square meters and 1000 square meters. The effect of the construction is shown in Figure 1 and Figure 2.

The hand-held mode is better in the construction of the map. The map features in Figure 1 are more obvious. There is no skew in the corridor, and the right-angle features are more accurate. In Figure 2, there was a large tilt at the beginning, which did not affect the subsequent construction. The left corridor appeared slightly skewed.

Liangliang Bai
Figure 1 500 square meters
Figure 2 1000 square meters

Closing loop

We test in the company, the size is about 100m * 60m, starting from the starting point, passing through the station, corridor, tea room, meeting room.
There are a lot of glass panels on the way, after a lap, back to the starting point, the final map is as follows:

Conclusion: As we can see in the figure above, in the current size of the area, M1M1 can completely control all kinds of complicated conditions. When returning to the starting point, there is basically no cumulative drift or overlap
The reconstructed map is very close to the actual size. Because there is no professional equipment measurement, accurate values cannot be given.

Failure Case: M1M1 could not work only when it was close to the glass door and the light was too bright. In other cases, it could successfully locate and map.

Fang Zhao

High-performance when mapping in the complex environments (bright/dark)

Turning on and off the light in a complex laboratory environment:

Figure 3 Turn on the light
Figure 3 Turn off the light

The above two tests were both under the handheld mode, and a model of the drawing was obtained around a circle in the laboratory. Although there are many internal types of equipment in the laboratory and the road conditions are complicated, the complete contour information can be obtained by two tests in only a one-time walk. Figure 3 shows the test carried out under the condition that the laboratory light is fully open. Figure 4 shows the results of the construction of all the lights in the laboratory and the black state.

Dongsong Shi

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