Remote automatic meter reading and control system

Abstract

Abstract A system for remote reading of data measured by consumption meters, utilizing encoded low power telemetry signals in the milliwatt range superimposed upon a power transmission network. This utilizes unique transmission and filtering techniques which insure the signal passing through power network system components, such as transformers, capacitors, voltage regulators, etc. without the necessity for by-passing by tailored circuitry. Individual meters at field points include means for translating the meter reading into appropriate binary code form and for coupling signals indicative of such data to the power network. A satellite unit gathers, processes and re-transmits the said data to a central station. The central station receives and transmits encoded meter data as required, and provides an error-detection and correction capability. An adaptive coding subsystem varies the coding scheme utilized in the present system in accordance with varying data transmission and network conditions. The system can also be used to monitor parameters such as temperature, pressure, etc. by interrogating appropriate transducers and transmitting the data over the same power network as is used for meter reading. It is also capable of transmitting signals for switching and shedding loads as required by the supervisory discipline.

Inventors

• 👤 Salvatore R Calabro
• 👤 John A Calabro
• 👤 Peter R Mich

Bibliographic Details