MIR Fleet PC - Page 11

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3. Host and network requirements

• Signal strength not less than -75 dBm and a signal to noise ratio of 20 dB measured from

the robot's perspective. If you experience issues, the signal strength can be measured

using specialized instruments. Any network consultant company will be able to help with

this.

• Full coverage of WiFi signal throughout the traveling path of the robot.

• Roaming happening at the correct time and without any authentication errors. Make sure

that the company network access points are controlled by the same controller.

• Access points set up to communicate and share roaming information.

The robots are able to perform some tasks under poorer network conditions

than those specified in this manual. However, key features such as Collision

avoidance, Auto charging and staging, Limit-robots zones, data synchronization

between robots, and fleet mission execution will not work fully.

Antenna

The small antenna shipped with the MiR robots is used for connecting the robots to your in-

house wireless network. It is designed for 2.4 GHz, and it does not have a powerful gain. If

you experience issues, consider replacing it with an antenna that suits your network.

The placement of the antenna is very important. If you put a metal case on top of the robot,

you must relocate the antenna.

WiFi band

Both 2.4 GHz and 5 GHz have advantages and disadvantages.

2.4 GHz: Has longer range and is better at penetrating metal and concrete, but it is limited

to three main channels and transmits data at lower speeds. Fewer channels result in signal

noise, and most production environments have a very high noise floor on the 2.4 GHz band.

Many technologies can create noise on the 2.4 GHz band, such as USB and Bluetooth.

5.0 GHz: Has shorter range and not as good performance traveling through obstacles as 2.4

GHz, but there are more main channels available, and it transmits data at higher speeds.

The exact number of channels depends on the region you are in.

It is not possible for the robot to select either 2.4 or 5 GHz. This selection is done on the

network side by creating a robot specific SSID with the desired frequency.