Аннотация
The concept of active background plane touching of two abstract objects is considered in the paper. The model of active plane touches on the principles of real and imaginary surfaces is offered. Geometry of active plane sensors at the touches of the technological objects, and theoretical density of elementary detector elements at the location on a common plane of technological object are shown. Using the model of the active zone, the concept of zone accuracy is offered. In the followed scientific of research direction, you should consider of the overall situation, which a sensor is create at the time by touch of the two surfaces of technological objects