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Structural health monitoring of buildings

The monitoring of structural health in buildings is a method based on sensors that collect data, which are later processed and interpreted. The purpose of this is to acquire a deep understanding of the conditions and the state of the structure, and to conduct preventive or corrective maintenance actions that will improve the safety of the building and guarantee its preservation.

Mechanical damage monitoring

Sensors are placed at strategic points along a structure to monitor mechanical damage generated as a result of earthquakes, unpredictable events or their normal use. Mechanical damage has their origin in external or internal structural, constructive or utilization forces.

The monitoring system, based on IoT technology, is conducted in very short periods of time, thus providing real-time information to make the decision making quicker and closer to the moment.

Taking into account the present and/or future damages that can become a hazard for the stability of the buildings or cause any harm to their users, sensors are set up in the relevant points to:

  • Monitor vibrations with an accelerometer, as they can affect the behavior of the structure while operating.
  • Monitor the deviations from the vertical with an inclinometer.
  • Determine the movements of the structures by opening already existing cracks with a linear crackmeter.
  • Monitor other data important for decision making such as temperature and humidity, because they can have an influence on the appearance or presence of dilatations, corrosion, mold or rust.

Physicochemical damage monitoring

One of the most common physical damage in buildings is the appearance of humidity. Regarding chemical damage, the most known and visually evident are oxidation, corrosion, efflorescence and chemical injuries caused by living organisms (plants, insect pests, chemical attack by excrement and fungi).

With the solution for structural health monitoring of buildings, physicochemical damage can also be studied by installing a sensor network that monitors variables such as temperature, humidity, dilatations, corrosion, molds or oxides.

Data acquisition and communication system

The datalogger collects the data monitored and sends it, via internet, to an Internet service by means of M2M standard communication protocols such as REST, MQTT, which store it in a database for future references. The period for sending the data can be adjusted according to the client's preferences. The flexibility of the firmware displayed enables the equipment to be directly integrated with any kind of IoT platform or control center, both cloud-based and local ones, through communication protocols (format of messages, communication and transport networks, M2M networks) completely adapted to each case. Communication with the optional communication modules at ENVIRA IoT are wireless, with technologies such as 3g, LTE, LORA® and soon Narrow-Band.

Data display and analysis

The data collected by the sensors are transmitted to the ENVIRA DS platform, where the information can be graphicly displayed or downloaded for further analysis with other tools.

The data collected by the sensors are transmitted to the ENVIRA DS platform, where the information can be graphically displayed or downloaded for further analysis with other tools.

 

With this data you get:

  • Monitoring of structures and buildings in real time.
  • Establish trends in the behavior of the fissures studied.
  • Increased safety and structural integrity.
  • Detection of anomalies in time.
  • Reduction of maintenance operating costs.
  • Better preventive conservation of heritage.
  • Integration with structural reinforcement strategies.

Applications of structural monitoring

This crack control system can be applied to any kind of building:

  • Residential buildings.
  • Public buildings:
    • Hospitals.
    • Sport stadiums.
    • Schools.
    • Museums.
    • Cinemas.
    • Hotels.
  • Road structures (bridges, viaducts, etc.).

Advantages

Open solution, integrable with external developments at any level (device, connectivity, CLOUD or user application).

An unlimited number of devices can be included in future extensions.

High-reliable and available data in real time.

Tailored system.

Complete adaptation and integration with different types of buildings.

Complete adaptation and integration with different types of buildings.

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