Secure non-contact switch

摘要

A redundant non-contact switch (110) reports a status as closed or open for a first member and a second member that move relative to each other between an open state and a closed state. In some embodiments, the redundant non-contact switch (110) includes a wireless authentication (WA) pair and a magnetic pair. The WA pair may include a WA responder (212) attached to one of the first member and the second member, and a WA interrogator (210) attached to the other of the first member and the second member. The WA pair may be configured to register a WA status of closed or open, depending on a WA authentication between the WA responder (212) and the WA interrogator (210). The magnetic pair may include a magnet (330) attached to one of the first member and the second member, and a magnet sensor (332) attached to the other of the first member and the second member. The magnetic pair may be configured to register a magnetic status of closed or open, depending on whether a magnet (330) distance between the magnet (330) and magnet sensor (332) is beyond a threshold magnet (330) distance. In some instances, the redundant non-contact switch (110) reports the status as closed only if both the WA status is registered as closed and the magnetic status is registered as closed.