Patent ID: 8179229

Claim:
An operator system for automatically controlling access barriers used to enclose a carrying device, comprising: a base controller associated with at least one access barrier; a memory device associated with said base controller, said base controller storing said open and close signals in said device for later generating barrier movement commands, wherein said base controller monitors the conditions of the access barrier; at least one base receiver associated with said base controller; at least one mobile transmitter transmitting an open signal and a close signal, wherein said mobile transmitter monitors a change in position of the carrying device and transmits said close signal when said mobile transmitter detects that the position of the carrying device has changed a predetermined amount, and wherein said mobile transmitter transmits said open signal automatically, said base controller selectively generating barrier movement commands depending upon when said open and close signals are received by said at least one base receiver; and a counter which is incremented when said open signal is not received, and wherein the status of the access barrier is checked by said base controller after said counter reaches a predetermined value.