Actual problems of modern science, education and training

4G Worldwide module with 3G/2G fallback and Ethernet (RJ45) for backhaul connectivity,

Fully integrated and internal antennas GPS, 4G, LoRa (peak gain=2,6dBi)

: no external antenna installation required (external LoRa antenna 3dBi or 6dBi still possible as an option),”

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  Carrier-grade casing (IP67) for industrial use,
  
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  8ch RX (125 kHz, multi Spreading Factor) + 1ch RX (250KHz or 500kHz, mono Spreading Factor) + 1ch RX (FSK) to get 10ch RX + 1ch TX,
  
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  Mounting kit allowing simple and quick installation without opening the casing,
  
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  Built-in high-rejection filters for co-localization with other radio devices and enabling strong interference resistance for better data transmission and permanent high availability.
  
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  Powered by:
  

o PoE injector (15W or 30W),
o +48VDC or DC -48VDC over RJ45 (isolated power),

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  Highly secured device relying on software and hardware architecture such as Prove & Run SecureBoot and SecureStorage,
  
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  Convenient and straightforward configuration, management, monitoring, control, and update via Kerlink Wanesy Management Center.
  

Figure 7. Browan Micro 16CH V1. 5 3G / 4G

Main Features Browan Micro 16CH V1.53G/4GG

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  Compliance to LoRaWAN 1.0.2
  
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  8 concurrent channels for LoRa transmission
  
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  3G/4G backhaul supported
  
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  Option support wide frequency range from 470MHz to 928MHz
  
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  Long-range over 15 kilometers radius
  
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  1 LAN port (10/100Mbps) with PoE
  
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  Downlink LBT
  
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  Cloud service to support easy deployment
  
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  Patented repeater mode for last-mile coverage
  
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  Thousands to millions of devices depending on the data model
  
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  Cost-effective for providing full redundancy coverage
  
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  IP67 waterproof
  

Building the infrastructure of the Internet of things is based on sensors that transmit information about the state of objects. There are a lot of types of sensors, depending on the purpose. For the organization of transportation by rail transport, the location of wagons and their condition (empty or loaded) can be considered critical information. The temperature and humidity in the car body is also important information for perishable goods.
The author tested several types of sensors that provide information about the location of the wagons, as well as the temperature and humidity inside the car body.
Lora edge Tracker (Fig. 8) is the release of the founder of the LoRaWAN network of the company Semtech . The tracker was connected to both network servers, which we considered at the top. Has a separate app for smartphones for configuration via Bluetooth . But when sending information, there was a problem with the location, that is, the tracker sent data that could not be decoded by network servers. Customer support was also unable to help in solving the problem.
Figure 8. Lora Edge Tracker


Abeeway Compact Tracker (Fig. 9) is manufactured by Abeeway , which in turn is a subsidiary of Actility . A web application called Abeeway is used to remotely configure the tracker . device manager . Through this application, you can not only set up trackers , but also visually view locations on the world map and the charging status. At the moment it is connected and working and sends data every 10 minutes.

Figure 9. Abeeway Compact Tracker

Yabby edge Tracker (Fig. 10) manufactured by Digital Matter which is geared towards the release of GPS trackers for different types of wireless network. Service Life of Digital Sensors Matter is distinguished from others by its durability. Yabby Edge connects to network servers via an OEM server and works with that server. However, setting up and connecting this device also did not give a good result.

10-Figure. Yabby Edge Tracker

Oyster 3 Lorawan is also a product of Digital Matter. Sensors are configured with special equipment that is connected to a computer via USB . Remote configuration is not provided. This tracker does not require connection to an OEM server, it can be connected directly to network servers. The complex tuning process did not give good results.

11-Figure. Oyster 3 Lorawan

Sentrius RS1xx manufactured by Laird Connectivity for the production of food cooling equipment. This sensor was also connected to both network servers. The sensor is easily adjusted via a smartphone, connected by Bluetooth. Displays both temperature and humidity simultaneously. There are additional devices called "samples" for better temperature detection.

12-Drawing. Sentrius RS1xx

Netvox R718J2 is used to determine the state of the wagon, empty or loaded. Two cables with dry contacts are connected to the sensor. There is a button for sending data and a message transmission indicator. The sensor is fixed in a certain section of the car by connecting it to special equipment of the brake system. The device has been tested and today also works and periodically sends messages.

10-Figure. Netvox R718J2