Multiplex bus interface system and method for transmitting and receiving power and data

A communications and control system comprising:

• a single conductor;
• a controller for controlling power and data delivered to the single conductor connected thereto, the controller operable with a power supply for providing a pulsed waveform having a plurality of voltage pulses separated by a time slot, wherein power is delivered with each voltage pulse and absent during the time slot;
• and
• a transceiver electrically connected to the single conductor for transmitting and receiving an electrical signal therewith, wherein the controller is operable for providing data to the transceiver through a pulse width modulation of the pulsed waveform, and wherein the transceiver transmits data to the controller through the single conductor during the time slot as a logical bit for reading by the controller, thus transmitting data to and receiving data from the transceiver through the single conductor through which power is delivered.

A method of transmitting data and power with a single conductor, the method comprising:

• providing a transceiver for transmitting and receiving an electrical signal;
• electrically connecting the transceiver to a single conductor;
• providing a controller for communicating with the transceiver through the single conductor;
• providing the electrical signal from the controller to the single conductor as a pulsed waveform having a plurality of voltage pulses separated by a time slot, wherein power is delivered with each voltage pulse and absent during the time slot;
• pulse width modulating the waveform for transmitting data from the controller to the transceiver;
• and
• transmitting data from the transceiver to the controller through the single conductor during the time slot as a logical bit for reading by the controller, thus transmitting data to and receiving data from the transceiver through the single conductor of the bus through which power is delivered.

A method of communicating and controlling a system through a single conductor, the method comprising:

• providing power to a single conductor as a voltage waveform having a pulsed operating voltage separated by a time slot wherein power is not applied to the bus during the time slot;
• pulse width modulating the waveform such that a first pulse width represents a logical one and a second pulse width represent a logical zero;
• connecting a transceiver to the single conductor for receiving the voltage waveform therefrom for powering thereof and receiving data therefrom;
• transmitting data from the transceiver during the time slot as a logical bit for reading thereof, the pulse width modulating of the waveform transmitting data to the transceiver and the logical bit data within the time slot receiving from the transceiver each through the single conductor through which power is delivered to the transceiver.