As part of the projects successfully implemented for the Bulgarian Customs Agency, a state-of-the-art dynamic axle weighing system has been deployed at the Gyueshevo Border Checkpoint. The solution is designed for the automatic weighing of vehicles while in motion, eliminating the need for vehicles to stop and ensuring fast, reliable, and highly accurate monitoring of freight traffic.

The system measures axle loads and the gross vehicle weight of passing vehicles at speeds of up to 8 km/h, significantly improving the efficiency of inspection procedures while reducing the processing time for freight vehicles crossing the border.

The weighing system has been developed and certified in accordance with OIML R134, the international standard for Weigh-In-Motion (WIM) systems used for automatic vehicle mass measurement. Compliance with this standard guarantees a high level of measurement accuracy, reliability, and traceability.

The data generated by the system provides objective information on:

• the axle load of each individual axle;
• the gross vehicle weight;
• identification of potentially overloaded vehicles;
• generation of reliable evidence to support enforcement and inspection activities.

The implemented solution enables the Bulgarian Customs Agency to perform more efficient monitoring of commercial freight transport and to ensure compliance with legal requirements regarding maximum permissible vehicle loads. The measurement results provide a reliable basis for administrative procedures and enforcement actions in cases involving overloaded vehicles.

The project at Gyueshevo Border Checkpoint demonstrates the successful application of advanced Weigh-In-Motion (WIM) technology for intelligent transport monitoring, improved road infrastructure protection, enhanced traffic safety, and optimized freight inspection and traffic management processes.

ESPA SYSTEMS EOOD continues to expand its presence in the railway infrastructure sector, with over 100 railway scales successfully commissioned for the needs of NRIC.

The systems are equipped with specialized software that ESPA SYSTEMS offers and implements on the market, providing high measurement accuracy, reliable data processing and effective control of freight trains. The solutions are tailored to the requirements of railway transport and support the optimization of freight turnover and safety.

Through the implementation of these projects, ESPA SYSTEMS contributes to the modernization of railway infrastructure in Bulgaria by providing reliable and effective solutions proven in real operating conditions.

The company continues to strengthen its position as a reliable partner in the development and maintenance of railway measurement systems.

ESPA SYSTEMS LTD has successfully completed an innovative project for “Baldzhievi 91” Ltd., involving the design, manufacture, and implementation of a specialized railway weighing system developed to meet the client’s specific technical and operational requirements.

The solution features a custom-designed railway weighing system integrated with a specially engineered receiving hopper into which the transported material—in this case, grain—is discharged directly. The system is designed to operate with hopper railway wagons equipped with bottom-discharge mechanisms, enabling fast, efficient, and controlled discharge of the product directly into the receiving hopper.

The system combines weighing, material reception, and subsequent transportation within a single integrated technological process. Integrated chain conveyors ensure the controlled and smooth transfer of grain to the silo facilities, optimizing material flow and reducing the need for additional handling operations.

Digital Weighing Technology for Reliable Measurement

A key component of the implemented solution is the use of digital load cells, which provide digital transmission of measurement data to the compatible electronic weighing and processing system.

Compared with traditional analogue solutions, digital technology offers enhanced diagnostic capabilities and more efficient fault identification, where these functions are supported by the specific system configuration. This facilitates maintenance and can reduce the time required to identify the causes of potential malfunctions.

The use of digital load cells supports reliable acquisition and processing of measurement data, helping improve measurement traceability and control over the weighing process. Combined with the individually engineered mechanical structure and integrated receiving hopper, the system represents a comprehensive engineering solution tailored to the specific application.

The accuracy and metrological performance of the weighing system depend on the complete measuring system, mechanical design, installation, configuration, and applicable metrological requirements.

Key Advantages of the Implemented Solution

• Minimized material losses during unloading and transportation – Direct discharge of grain from the railway wagons into the receiving hopper reduces intermediate handling operations and helps minimize spillage and product losses.
• Preservation of grain integrity and quality – Controlled reception and transportation through the integrated chain conveyors support smooth material handling and reduce the need for additional mechanical handling.
• Optimized logistics processes – Integrating weighing, unloading, and conveying to the silos into a single technological process simplifies operations and reduces the need for additional product transfers.
• Increased operational efficiency – The specially engineered design is adapted to the unloading method of the railway wagons and the subsequent transportation of grain, supporting a more efficient production workflow.
• Reliable weighing with digital load cells – Digital data transmission and diagnostic capabilities, where supported by the system, facilitate monitoring of the weighing process and technical maintenance.
• Simplified maintenance and servicing – The diagnostic functions of the digital system can enable faster fault identification and more targeted service interventions, helping reduce equipment downtime.
• Integration of weighing and material-handling operations – Combining the railway weighing system, receiving hopper, and conveying equipment into a single solution ensures functional integration between weighing and product handling.
• Loading, unloading, and weighing at a single location – The integrated solution enables grain loading, unloading, and weighing operations to be carried out at the same designated operational point. By incorporating weighing directly into the material-handling process, the system eliminates the need to transfer the product to a separate weighing area. This optimizes logistics, shortens wagon-handling cycles, reduces additional handling operations, and improves the overall efficiency of loading and unloading activities.
• Compliance with applicable metrological requirements – The system has been designed to achieve the required measurement performance and to meet the applicable standards and regulatory requirements.

Engineering Expertise and a Tailored Approach

The project for “Baldzhievi 91” Ltd. demonstrates the successful combination of engineering expertise, specialized weighing technology, and an individual approach to the client’s specific operational needs.

Through the implementation of this solution, ESPA SYSTEMS LTD demonstrates its capabilities in developing and delivering complex railway weighing systems in which weighing is directly integrated into the technological process.

As part of the MOBICCON-PRO European project, coordinated by Glavbolgarstroy, ESPA SYSTEMS Ltd. successfully implemented a comprehensive vehicle monitoring and documentation system based on the SPWIN PRO software solution.

The MOBICCON-PRO project introduces a systematic, circular, and mobile approach aimed at improving the recovery and recycling of construction and demolition waste in the Southeast European region. As part of its implementation, innovative technologies and mobile technical solutions have been introduced, demonstrating sustainability, efficiency, and the potential for wide-scale application in real operational environments.

The implemented system provides fast, reliable, and automated documentation of passing vehicles by capturing images of trucks entering and leaving the site. Through integration with weighing systems and truck weighbridges, the solution ensures high accuracy, automated data processing, and complete traceability of every vehicle passing through the facility.

SPWIN PRO provides advanced capabilities for data storage, processing, and analysis, automatic report generation, visual documentation of passing trucks, and linking images with weighing records from the scale. This makes it a reliable tool for process automation and control in industrial, logistics, and construction sites.

With the successful implementation of the project at Glavbolgarstroy (GBS), ESPA SYSTEMS has further strengthened its expertise in the development and implementation of intelligent control and automation systems.