초록 ▼

A microprocessor-controlled airfield series lighting circuit communications system and method allows bi-directional communication between the controlling microprocessor and the airfield lamps. The bi-directional communications signals are formed by using a modulated radio-frequency signal that is tr

A microprocessor-controlled airfield series lighting circuit communications system and method allows bi-directional communication between the controlling microprocessor and the airfield lamps. The bi-directional communications signals are formed by using a modulated radio-frequency signal that is transmitted through a circuit containing many transformers having their primary windings connected in series. Respective secondary windings of the transformers are connected to various devices, such as lamps or sensors. A high frequency signal is imposed on the series-connected primary windings to control the lamps. The frequency of this signal is selected to be able to be detected on the secondary side of the transformer. A remote controller is connected to the secondary of each transformer to receive the control signal and selectively switch power obtained from the transformer secondary to the respective connected device. Any one of the multiple controllers can be configured as a repeater for any other one of the controller. As a repeater, the controller receives a control message addressed to a target controller and retransmits the message to the target controller.

대표청구항 ▼

[ What is claimed:] [1.] A control system for a lamp in an airfield lighting system including an electrical circuit comprising a plurality of transformers, each transformer having a primary winding and a secondary winding, wherein the primary windings of the plurality of transformers are connected i

[ What is claimed:] [1.] A control system for a lamp in an airfield lighting system including an electrical circuit comprising a plurality of transformers, each transformer having a primary winding and a secondary winding, wherein the primary windings of the plurality of transformers are connected in series, the circuit being adapted to conduct an electrical current through the series-connected primary windings and at least one transformer of the plurality of transformers being adapted to provide operational power to the lamp, the control system comprising:a master controller which applies an electrical control signs to the circuit;a remote controller, connected to the secondary winding of the one transformer, said remote controller comprising:means for receiving the electrical control signal from the secondary winding of the transformer as transmitted through the transformer from the primary winding of the transformer,a switch, coupled to the transformer secondary winding and responsive to a switching signal, to selectively energize the lamp,control means, responsive to the received electrical control signal, for generating the switching signal to control the lamp,means responsive to the received electrical signal for generating an acknowledge message, andmeans for applying the acknowledge message to the secondary winding of the one transformer to convey the acknowledge message to the master controller through the series-connected primary windings.