The infrastructure layer is the layer that creates the technology necessary to perform various services and store the information received. This includes the geoinformation system service, cloud computing platform, cloud storage, Big Data analysis tools, etc.
In the transport industry, digital technologies should allow the transition to paperless technologies in the operation and design of any transport services, provide comprehensive monitoring of the state of transportation and transport infrastructure facilities.
It is worth noting the very important role of IoT in the tasks of monitoring infrastructure and vehicles, the use of which allows:
– to take into account the work done, as well as the energy or resources spent on it;
– to predict based on the results of data analysis of the pre-failure condition of the facility, for the implementation of operational measures and prevention of traffic safety violations;
– automate maintenance and determination of pre-failure states;
– to carry out operational changes in the vehicle control mode on the studied infrastructure in case of detection of dangerous failures. [51]
With the help of IoT technologies, it is possible to conduct intelligent tracking of the movement of vehicles, their location at the current time, working hours and parking time, attempts to enter the body of the vehicle, etc.
The use of elements of the Internet of Things technology allows you to measure the internal conditions inside the vehicle body during transportation (temperature, humidity, lighting conditions, etc.). The Internet of Things can also be used in vehicle control and navigation systems. Real-time monitoring of vehicles using IoT tools allows for efficient delivery of products to consumers in megacities.
The use of IoT makes it possible to significantly improve the quality of public transport services, to reorient the vector of preferred use of vehicles in the structure of the transport process from personal to public transport and, thus, reduce the load on the road network. [38]
Systems based on geolocation technologies in conjunction with the Internet of Things have also been widely developed, which allow linking information in a single network about the movement of vehicles, which allows real-time forecasting of the exact time of arrival of the desired object to the stopping point [69,70,71] Wide access for a large number of users via devices connected to the Internet, allows significantly improve the quality of decisions made by passengers on the implementation of a convenient travel option.
An important criterion for the implementation of the development of the transport infrastructure of the passenger complex is the accuracy of the analysis and forecasting of passenger flows. Most of this data is obtained by consolidating information about the number of people who have passed, taking into account the time of day, from sensors located in turnstiles [25,26,28].
The development of predictive analytics systems on the impact of weather events and weather emergencies on the restriction of transport, based on IoT data, allows for early adjustment of the timetable, notifying the population and transmitting a signal about the mobilization of emergency services.
1.2.1 IoT application in railway transport
In the context of the implementation of trends for the development of the digital economy in the Russian Federation and particularly important sectors of the national economy, the Digital Railway project is also being implemented, which is based on the concept of automatic collection of all necessary primary information about the state of the transportation process. Particularly important information affecting traffic safety and requiring operational control can include: the current state of the SCB, the speed and weight of trains, the dislocation of mobile units and their current condition, the presence of restrictions, etc.
The core of the formation of digital railway technologies is the full integration of intelligent communication technologies between the user, vehicle, traffic management system and infrastructure.
The main tasks of using IoT in railway transport include:
– reducing the influence of the human factor;
– development of paperless document management;
– improving the reliability and safety of traffic;
– reduction of the number of workers in the area of heavy traffic;
– reduction of the life cycle cost of railway infrastructure and rolling stock;
– improvement of transport logistics;
– expansion of international transport corridors.
In railway transport, the industrial Internet of Things is characterized by the unification of information collection systems, a cloud platform and a personalized system for the formation of control actions.
There are many functional directions for the development of digital technologies and IoT. In particular, in relation to the railway transport complex, the following can be distinguished:
1) IoT is used in working with rolling stock: passenger and freight cars, locomotives, electric trains. With this technology, it is possible to control their movement and location in order to provide additional services.
The role of IoT in performing the task of optimizing production processes consists of the following functions:
– maintenance of rolling stock according to technical condition;
– reduction of consumption of fuel and energy resources;
– remote monitoring and control of the location of the locomotive and wagon fleet, optimization of the logistics of wagons and cargo.
2) IoT diagnostics and monitoring of the condition of rolling stock:
– analysis of data promptly received from sensors in the process of monitoring the technical condition of the train, allows you to move from the modeling system to predicting the pre-failure condition;
– development of preventive measures aimed at improving reliability and operational readiness to increase the service life of particularly important components and parts of rolling stock, based on the analysis of their monitoring;
– reduction of the probability of failures of the main elements and associated downtime;
– creation of a database on the terms of repairs and areas of circulation of rolling stock for rational planning of maintenance and repair;
– planning the allocation of resources and spare parts for repair work.
Data from monitoring systems of train parameters «on the move» are analyzed in real time and used to prevent accidents in the operation of rolling stock. [51]
3) IoT is used to monitor railway infrastructure. With the help of sensors, you can monitor the state of the infrastructure in real time, as well as predict pre-failure states.
The IoT functions for optimizing the technological state of the infrastructure are as follows:
– remote monitoring and control of the dynamic characteristics of the railway track and switches;
– remote control and monitoring of separate points and crossings;
– precise positioning of the controlled object to increase the speed of response to dangerous failures;
– improving the objectivity of the analysis of the state of objects
and their parameters in real time.
– remote monitoring and control of automation and telemechanics.
When