A monitoring system includes one or more cameras to determine a three dimensional model of a person; means to detect a dangerous condition based on the 3D model; and means to generate a warning when the dangerous condition is detected. At least two corresponding air taps include a low tap for tapping low pressure compressor air from a location downstream of a first stage of the lower pressure compressor rotor, and upstream of a first stage of the higher pressure compressor rotor, and a high tap to tap air downstream of the first stage of the higher pressure compressor rotor. The method further includes using the master module to receive requests sent over the coax backbone from the plurality of network modules for bandwidth to transmit bursts. The difference between a portion of the sum term and the average of the difference term is calculated to yield the individual bias current conducted by the second amplifier of the amplification stage. High power loss and high EMC in the full-load threshold region are avoided by prematurely switching from the PWM mode to the permanently closed mode as a function of a preset setpoint and the supply voltage, and returning to the PMW mode with a hysteresis of these values. A foam of water-based polyurethane is injected into said at least one inner spacing so as to complete fill the same and provide the wall assembly with insulating capabilities.