In one implementation, a footfall detection assembly comprising a sensor underlayment unit and a data analysis device is provided. The sensor underlayment unit comprises a sensor having a unique sensor identifier and a plurality of zones, wherein the sensor is configured to measure zone capacitance in of the plurality of zones, and a processing unit operably connected to the sensor. The processing unit is configured to receive the measured zone capacitance values from the sensor upon the occurrence of a change in measured zone capacitance of the sensor and generate and transmit a data packet comprising at least the unique sensor identifier and measured zone capacitance values upon occurrence of a change in capacitance of at least one of the plurality of zones of the sensor. The data analysis device is configured to receive the data packet, compare the measured zone capacitance values of the data packet to previously-measured zone capacitance values associated with the sensor underlayment into and generate a result therefrom.

A system for evaluating a rigidity of an angle bracket includes a test system having a first test fixture and a second test fixture. The system includes an angle bracket coupon including a first wall, a second wall coupled to the first wall at a bend to define an angle between the first wall and the second wall, and at least one three dimensional feature defined at the bend that extends between the first wall and the second wall. The angle bracket coupon is to be coupled to at least one of the first test fixture and the second test fixture to evaluate the rigidity of the angle bracket.

A soil parameter required when civil engineering/mechanical simulations for various grounds are performed is appropriately determined. A parameter determination device determines a parameter of a particle model used in a ground analysis system. The parameter determination device includes a triaxial compression test numerical analysis unit configured to determine the parameter so that the adhesive force and the shear resistance angle of a virtual ground respectively match the adhesive force and the shear resistance angle of an actual ground with a predetermined accuracy, and a pull-out test numerical analysis unit configured to determine the parameter so that a ground reaction force coefficient of the virtual ground matches a ground reaction force coefficient of the actual ground with a predetermined accuracy.

In one implementation, a footfall detection assembly comprising a sensor underlayment unit and a data analysis device is provided. The sensor underlayment unit comprises a sensor having a unique sensor identifier and a plurality of zones, wherein the sensor is configured to measure at least one parameter in each of the plurality of zones, and a processing unit operably connected to the sensor. The processing unit is configured to receive the measured parameter values from the sensor upon the occurrence of a change in measured parameters and generate and transmit a data packet comprising at least the unique sensor identifier and measured parameters upon occurrence of a change in measured parameters of at least one of the plurality of zones of the sensor. The data analysis device is configured to receive the data packet, compare the measured parameter values of the data packet to previously-measured parameter values associated with the sensor underlayment into and generate a result therefrom.

In one implementation, a footfall detection assembly comprising a sensor underlayment unit and a data analysis device is provided. The sensor underlayment unit comprises a sensor having a unique sensor identifier and a plurality of zones, wherein the sensor is configured to measure zone capacitance in of the plurality of zones, and a processing unit operably connected to the sensor. The processing unit is configured to receive the measured zone capacitance values from the sensor upon the occurrence of a change in measured zone capacitance of the sensor and generate and transmit a data packet comprising at least the unique sensor identifier and measured zone capacitance values upon occurrence of a change in capacitance of at least one of the plurality of zones of the sensor. The data analysis device is configured to receive the data packet, compare the measured zone capacitance values of the data packet to previously-measured zone capacitance values associated with the sensor underlayment into and generate a result therefrom.