An anti-entrapment system for preventing objects from being entrapped by a
translating device includes a capacitance sensor positioned adjacent to
the translating device and a controller. The sensor has first and second
conductors separated by a separation distance and a compressible
dielectric element interposed between the conductors. The conductors have
a capacitance dependent upon the separation distance. The capacitance of
the conductors changes in response to a geometry of the sensor changing
as a result of either conductor or the dielectric element deforming in
response to a first object touching the sensor. The capacitance of the
conductors changes in response to a second conductive object coming into
proximity with either conductor. The controller receives a signal from
the sensor indicative of the capacitance of the conductors, and controls
the translating device as a function of the capacitance of the conductors
to prevent the translating device from entrapping either object.