Controlling temperature and generator operation in reefer containers

30.08.2021

Problem

Transportnoye Agentstvo LLC is a well-known freight carrier in Siberia, Russia. One of the company's principal business areas is rail transportation in refrigerated containers from Siberia to the Far East and back.

The company faced a number of problems related to generators that maintain the proper temperature in containers. The operation of generators was inefficient and required onsite maintenance:

• The generator engine could only be started or stopped manually.
• Long-distance transportation required large volumes of fuel, and it was not always possible to refuel the GenSet diesel generator while transporting a container.
• The company wanted to use one generator set for two containers at once.

Solution

AvtoScan developed a solution for remote monitoring of generators in reefer containers.

• The AvtoScan specialists installed telematics hardware on mounted GenSet generators and inside containers. The Wialon monitoring platform is responsible for remote control and receiving data from devices.
• The generator can be started remotely both by using Wialon and sending an SMS message to the Galileosky 7x terminal.
• Special sockets for automatic power switching between refrigeration units were made. Sockets are controlled via Wialon commands or in automatic mode according to an algorithm (regardless of whether there is a GSM/GPS connection).
• A Maxwell MS-3DA4880 three-phase solid-state relay was used to control power switching between refrigerated containers.
• Refrigeration units were equipped with Escort TD-BLE temperature sensors and Italon 1000 fuel level sensors. Data from sensors is also collected in Wialon. If the temperature inside a container is beyond the acceptable range, the customer is notified.