This body structure is suitable for motor vehicles, especially for passenger cars and comprises a passenger compartment structure and at least one supporting structure adjoining thereon, for example, for accommodating a driving unit and wheel suspension elements. The detection is based on the carrier perturbation method detected by a set of double gate comparator circuits that further generates an integrated signal driven to a digital analog converter. The grid array interposer unit can then be mounted within an external circuit using any of a plurality of mounting technologies, land grid array, pin grid array, surface mount technology, andor others). The housing assembly also provides a biasing member biased against the door to move the door to the open position. In one embodiment, a single supply source may be used to power the closed loop while a variable gain stage that is digitally controllable may adjust the gain in a feed-forward manner based on the drop. The control and instrumentation system can be utilize to operational control all of the required process components of the subsea production system from the surface located controller.