Developments in the IoT and Developments at the TTÜ
In cooperation with Telia, at the moment it is possible to test, for example, the NB-IoT and LTE Cat M1 radio networks at the TTÜ campus. This is primarily a radio-communication technology for IoT devices that uses the same base stations as our mobile phone. The main advantages are greater bandwidth and lower power consumption, which in turn again results in a lower data rate. It is also important to note that this solution allows for a two-way communication between the devices, which is particularly important for the management of the devices.
However, if it is important to have the maximum battery life and the data needs to be sent only unilaterally and relatively rarely, in cooperation with Levira, the LoRa WAN radio technology can be used at the TTÜ campus. LoRa WAN is a radio network working in license-free band, the precondition for which is the availability of a base station. Devices can be located up to 15 km away from the base station, but in the city and indoor conditions coverage is limited to a few kilometers. The specificity of the LoRa WAN network is also that the devices are sending data to Levira’s own IoT platform. If necessary, this information can be further transmitted from there for further analysis and visualization.
Smart city development
Coupled with self-driving cars, the Vehicle-to-Vehicle (V2V) and Vehicle-to-Infrastructure (V2I) communication continues to evolve. Bercman Technologies, in cooperation with TTÜ, develops, for example, a smart pedestrian crossing that warns the driver of a pedestrian crossing the road with a light signal. This concept can be extended by communication between the crossing and the car, where the car can directly access information about pedestrians from the pedestrian crossing and prematurely retards without intervention by the driver. In partnership with Starship, it is also planned to develop communication between Starship’s last-mile robot and self-driving vehicle. This will enable, for example, the use of similar communication between motorcycles, bicycles and all kinds of vehicles, which will help prevent unexpected collisions and related property damage and personal injuries.
Usage of single-chip radars
The development of sensory solutions is also in parallel. When self-driving vehicles are currently using cameras, LIDARs and far-field radars for decision-making, the so-called chip-radars, which are working in mm-wavelength radio frequency range, are starting to replace some of those functionalities. Their advantage is low cost, small size and virtually unlimited use-cases, which gives the image of the image below
The above projects are a rather limited list of possible developments in the concept of the smart city of TTÜ . It is highly anticipated to collaborate with companies who want to contribute to the testing, refinement and implementation of various technologies outside of TTÜ’s campus. Read more about IoT’s thematic activities in TTÜ at http://iot.ttu.ee