iWiM: Manufacturer of the Dynamic Weighing Systems (BISONTE) and structural monitoring systems (GRIFONE)
iWIM is an Italian company that has specialized for more than 15 years in the development of dynamic weighing systems (WIM – Weigh in Motion) and advanced solutions for structural monitoring of roads, bridges and viaducts. We design and manufacture fiber optic sensors, high-precision WIM modules and software platforms forreal-time data analysis, now used by public agencies, highway operators and international companies.
With BISONTE (dynamic weighing) and GRIFONE (structural monitoring) technologies, we support infrastructure safety, overload control, and heavy traffic management, offering reliable, accurate systems that can be integrated on any road context.
WIM dynamic weighing to monitor vehicle weight in real time and increase safety of roads, bridges and infrastructure
What is weighing in motion (WIM – Weigh in Motion)?
WIM – Weigh in Motion allows vehicles to be weighed in traffic, without stopping, from 5 to 150 km/h. BISONTE dynamic weighing technology, with fiber-optic sensors, accurately measures total weight, axle load and dynamic behavior of passing vehicles.
What are the advantages of the BISONTE dynamic weighing machine?
Dynamic weighing processes data in real time, ensuring compliance with regulations, increased safety and continuous monitoring of heavy vehicles. BISONTE systems detect overloads immediately, supporting pre-selection and direct sanction reliably.
Where can BISONTE sensors be installed and what do they offer?
BISONTE dynamic weighing sensors are designed for roads, bridges, viaducts and construction sites. They provide stable and long-lasting measurements, offering a viable alternative to static scales. Weigh-in-motion technology helps prevent infrastructure damage and improve transportation management
WIM dynamic weighing to monitor vehicle weight in real time and increase safety of roads, bridges and infrastructure
What is GRIFONE and what is its goal?
GRIFONE is the intelligent system developed by iWIM to improve structural monitoring of bridges and viaducts. Created in collaboration with the DICATAM Department of the University of Brescia, it has a specific goal: to integrate dynamic weighing(weigh-in-motion) of vehicles with continuous measurement of structural deformations.
How does GRIFONE work and what technologies does it use?
The system directly combines fiber-optic sensors, installed on thedeck, with WIM modules that detect weight, position and speed of heavy vehicles. Each transit is linked to the actual response data of the structure, creating a complete and immediate picture of the bridge’s behavior.
What advantages does this type of structural monitoring offer?
The result is accurate, continuous, and reliable structural monitoring that allows for early detection of any critical issues.
GRIFONE helps to improve safety, preventive maintenance and heavy traffic management on infrastructure.
Why choose iWiM's systems?
Reusable
Unique feature
Easy installation
Minimizes road closure times
Reliable and durable
We use only the fiber-optic sensors
Advantages of Dynamic Weighing and Structural Monitoring Systems
- Composed of 2 stainless steel plates equipped with fiber optic sensors connected to a datalogger
- Approved by the Ministry of Economic Development
- The datalogger can also be installed at long distances (up to 10 km) without affecting the measurement
- No electrical wires or electronic devices under the plates
- Immunity to electromagnetic fields
- System functioning even in extreme conditions (snow or mud)
- Installation of plates flush with pavement, with placement in urban, suburban, highway, on viaduct bridges and toll booths
- Easy relocation of the system to new installation site
- Calibration only every 2 years
- High durability and low maintenance
- Reuse of weighing plates in case of road surface work
- Insensitivity to temperature changes
Data collected by the Dynamic Weighing System
The BISONTE dynamic weighing system, in addition to the weight is able to provide the following data without additional devices:
Vehicle weight
Transit speed
Vehicle counting and classification
Number of axles
Single axle shaft weight
First/last axis distance
Axle width
Vehicle length
Twin wheel axle
Off-plate passage alert
STEEL PLATES
The BISONTE weigh-in-motion (WIM) system consists of 2 weight sensors installed flush with the road and can be placed on urban and suburban roads, highways, bridges and toll booths.
FIBER OPTIC SENSORS
The weight sensor consists of folding plates made of stainless steel and equipped with fiber optic sensors connected by fiber optic cable to the data logger.
DATALOGGER
The datalogger (data acquisition unit) processes and stores all information from the weight sensors in a database. The user can access all transit data through an intuitive web interface, available on any device.
The Weigh-in-Motion (WIM) system allows vehicles to be weighed in the flow of traffic without interruption at speeds from 5 km/h to 150 km/h.
BISONTE’s advanced fiber-optic-based weigh-in-motion technology enables accurate measurement of the total weight and axle load of moving vehicles, thus ensuring compliance with weight regulations and increasing road safety.
Data are collected and sent in real time, enabling management of all transits and monitoring of overloaded vehicles on roads for preselection or direct sanction.
Dynamic weight control
The Software
The software is designed directly by iWIM, has a simple and intuitive interface, and is able to provide, immediately and clearly, all the necessary information of specific interest to the user.
The dynamic weighing scale can be interfaced with other ITS systems such as ANPR cameras for license plate recognition.
REFERENCES
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