Scientific inclinometer Is needed in Miami apartment building collapse

In the early morning of June 24, 2021, part of a 12-story building collapsed in Miami, Florida, USA, resulting in at least three deaths, many injuries and at least 99 people missing.

Miami apartment building collapses

The collapsed building reportedly showed signs of subsidence in the 1990s. The building was undergoing roof repairs at the time of the incident, but it was not clear if that was the main cause of the collapse. Although the cause of building collapse is not clear, but most of the house collapse is due to the age of the house, the random reconstruction of the house, and the foundation is not strong, and there are often signs before the collapse of the house, such as the ground subsidence, empty drum or crack suddenly increased; Load-bearing columns, beams, plates or walls appear serious cracks or abnormal deformation. Most of the collapses were caused by building deformation and spread from cracks. Structural tilting deformation is the main cause of building instability and collapse, especially for houses with poor integrity or already damaged, the internal stress distribution is uneven. Once deformed and inclined, the internal stress will change rapidly, and the partial bearing structure will collapse rapidly with other parts after failure.

Although the conventional method can be used to detect and observe the house, the manual monitoring period is long, the error is large, and can not realize the collection of dynamic data for analysis, resulting in the house safety is difficult to be effectively guaranteed. These problems can be avoided by using the automatic acquisition scheme, and the dip sensor monitoring method is the most advanced monitoring means.

The inclination sensor has the function of continuous reading, automatic recording and digital transmission. When monitoring the tilt of the upper level of the building, the inclinometer can be placed on the top floor of the building or on the floor of the floor to be observed. When monitoring the foundation inclination, the dipmeter can be placed on the foundation surface to reflect and analyze the change degree of the building inclination with the change value of the horizontal inclination of the measured floor or foundation surface. The product adopts high precision MEMS accelerometer and high resolution differential digital-to-analog converter with built-in automatic compensation and filtering algorithm, which eliminates the error caused by environmental changes to a large extent. The change of static gravity field is converted into the change of dip Angle and the value of horizontal dip Angle is directly output by digital means.

The sensor technology of the Internet of Things is used to provide support for the automatic real-time monitoring and accident warning system of house safety. The inertial attitude sensor of Drksir will continue to make efforts in the monitoring of the tilt of houses and buildings, and escort the safety of people's lives and property.