Abstract: A power closure sensor system is disclosed. The system includes a data processing device, a closer motor in communication with the data processing device and controlling the movement of a closable member, and a proximity sensor, configured to sense the location of an object. The proximity sensor is in communication with the data processing device. The proximity sensor is configured to communicate the location of the object without the object contacting either the closable member or the frame. The system also includes a position sensor configured to sense the position of the closable member. The position sensor is in communication with the data processing device. Further, the system includes a logic program running on the data processing device and the logic program is configured to generate an estimate of the location of the object relative to the closable member.

Abstract: A remote signal transmitter that is capable of producing a command comprising a signal including a first value and an answer calculated using the first value as an input variable in a transfer function. The transmitter broadcasts the signal to a receiver which receives the first value and the answer. The receiver then performs a second calculation using the first value to produce a second answer. The first answer incident upon the receiver is then compared with the second answer and if a predetermined comparison test is satisfied, the subsequent command is implemented. The preferred embodiment of the present invention includes a means to increment the first value each time the transmitter is utilized. In addition, the receiver includes a screening process in which the second calculation performed by the receiver will not be performed if a previously used first value is received.