System and method for transmitting control information over an AC power network
AssigneeADS Enterprises NZ Ltd.
InventorAntony Vincent Haines
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Abstract
Disclosed is a transmission system for transmitting digital information via a power supply network. In one embodiment, there is a transmission device which comprises a generator for generating a simulated digital wave-form carrying the digital information to be transmitted, and a high-voltage injector to inject the generated simulated digital wave-form carrying the digital information into the power supply network. A receiving device is also disclosed, which comprises an analog detector for detecting predetermined harmonic frequencies of a signal frequency, and a logic device to output a logic signal corresponding to the output of the analog detector as said digital information.
Claims13
A transmission device for transmitting digital information via a power supply network, comprising of:
- a generator for generating a simulated digital wave-form carrying the digital information to be transmitted, wherein the simulated digital wave-form is built of predetermined harmonic frequencies of a signal frequency;
- a high-voltage injector to inject the generated simulated digital wave-form carrying the digital information into the power supply network;
- wherein said high-voltage injector comprises drive stage transistors to inject the generated simulated digital wave-form carrying the digital information into the power supply network;
- and
- a chopping unit that coupled to the power supply network, wherein the chopping unit rapidly turns the drive stage transistors on and off in conformance with the shape of a low frequency wave-form.
A receiving device for receiving digital information via a power supply network comprising of:
- an analogue detector for detecting predetermined harmonic frequencies of a signal frequency;
- and
- a logic device in communication with the analogue detector, wherein the logic device is adapted to output a logic signal corresponding to the output signal of the analogue detector as said digital information, and
- an information retrieval unit in communication with the logic device, wherein the information retrieval unit is adapted to retrieve control information directed to said particular receiving device wherein said information retrieval unit comprises a decryption unit to verify whether or not said control information is addressed to said particular receiving device and to decrypt said control information with a predetermined key.
A method for transmitting digital information via a power supply network, comprising the steps of:
- generating a simulated digital wave-form carrying the digital information to be transmitted in either a time synchronous or encrypted form, wherein the simulated digital wave-form is built of predetermined harmonic frequencies of a signal frequency;
- and
- injecting the generated simulated digital wave-form carrying the digital information into the power supply network after having been modulated a chopping process.
Dependencies are inferred from the claim text.