TWACS TRANSMITTER AND RECEIVER

摘要

As disclosed, a two-way automatic communications system (TWACS) and method are used by an electrical utility in which outbound messages are sent from the utility to a consumer and inbound messages are sent from the consumer to the utility. The respective outbound and inbound messages are sent and received over the utility's power distribution system. A receiver including an analog filter component, an A/D converter and a digital processor detects the outbound messages. A substation transceiver is configured for sending analog outbound messages from the utility to a consumer. A transponder is configured for sending inbound messages to the transceiver from the consumer to the utility, the respective outbound and inbound messages being modulated on a mains signal of the utility's power distribution system. The receiver in another form includes an analog filter component, a detecting circuit and a demodulator.

主权项

1. In a two-way automatic communications system (TWACS) used by an electrical utility in which outbound messages are sent from the utility to a consumer and inbound messages are sent from the consumer to the utility, the respective outbound and inbound messages being sent and received over the utility's power distribution system, a receiver for detecting the outbound messages, said receiver comprising:
an analog filter component receiving the analog outbound signal including an outbound message to provide a filtered signal; an A/D converter converting the filtered signal to a corresponding digitized signal and providing the corresponding digitized signal; and a digital processor executing:
a digital preprocessor component receiving the corresponding digitized signal, preprocessing the received corresponding digitized signal to provide a preprocessed digital signal; anda digital symbol determination component receiving the preprocessed digital signal and including a two-dimensional digital demodulating component for demodulating the received preprocessed digital signal to provide the outbound message.