Systems and methods for providing power and data to devices
First Claim
Patent Images
1. A controller configured to power and to control a behavior of a system of devices, each of the devices serially addressable over a two-wire communication network, the controller comprising:
- a user interface configured to accept user input and to output information responsive to the user input;
a processor communicating with the user interface and configured to receive the information and to output a control signal corresponding to command and address data that is responsive to the information, the control signal having first and second states;
a core and coil transformer configured to transform a primary AC signal to a secondary sinusoidal power signal;
a rectifier/bridge circuit communicating with the core and coil transformer and configured to connect one of a first end tap and a second end tap of the core and coil transformer to the two-wire communication network to output a data encoded power signal to the two-wire communication network to control a behavior of at least one device of the system of devices, the rectifier/bridge circuit comprising a plurality of series-connected pairs of transistors with integral body diodes, gates of the transistors in communication with the control signal from the processor, at least one series-connected pair of transistors enabled when the control signal is in the first state and at least one of the other series-connected pairs of transistors enabled when the control signal is in the second state, the rectifier/bridge circuit outputting the secondary sinusoidal power signal with a higher polarity when the control signal is in the first state and outputting the secondary sinusoidal power signal with a lower polarity when the control signal is in the second state to form the data encoded power signal as a sinusoidal waveform between zero crossings.
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Abstract
Systems and methods are provided to transmit a data encoded power signal to addressable devices. A data signal includes address and command data that varies between logical states. A controller provides a low loss rectified power signal. The controller further provides data within the power signal by forming a positive polarity rectified power waveform corresponding to data in a first state and a negative polarity rectified waveform signal corresponding to data in a second state using substantially loss-less circuitry.
288 Citations
20 Claims
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1. A controller configured to power and to control a behavior of a system of devices, each of the devices serially addressable over a two-wire communication network, the controller comprising:
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a user interface configured to accept user input and to output information responsive to the user input; a processor communicating with the user interface and configured to receive the information and to output a control signal corresponding to command and address data that is responsive to the information, the control signal having first and second states; a core and coil transformer configured to transform a primary AC signal to a secondary sinusoidal power signal; a rectifier/bridge circuit communicating with the core and coil transformer and configured to connect one of a first end tap and a second end tap of the core and coil transformer to the two-wire communication network to output a data encoded power signal to the two-wire communication network to control a behavior of at least one device of the system of devices, the rectifier/bridge circuit comprising a plurality of series-connected pairs of transistors with integral body diodes, gates of the transistors in communication with the control signal from the processor, at least one series-connected pair of transistors enabled when the control signal is in the first state and at least one of the other series-connected pairs of transistors enabled when the control signal is in the second state, the rectifier/bridge circuit outputting the secondary sinusoidal power signal with a higher polarity when the control signal is in the first state and outputting the secondary sinusoidal power signal with a lower polarity when the control signal is in the second state to form the data encoded power signal as a sinusoidal waveform between zero crossings. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method to power and to control a behavior of a system of devices, each of the devices serially addressable over a two-wire communication network, the method comprising:
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generating a control signal having a first state and a second state for sending commands and addresses to at least one device in the system of devices; transforming with a core and coil transformer a primary AC signal into a secondary sinusoidal power signal; enabling at least one series-connected pair of transistors of a plurality of series-connected pairs of transistors when the control signal is in the first state to connect a first end tap of the core and coil transformer to the two-wire communication network; enabling at least one of the other pairs of series-connected transistors when the control signal is in the second state to connect a second end tap of the core and coil transformer to the two-wire communication network; outputting the secondary sinusoidal power signal with a higher polarity when the control signal is in the first state and outputting the secondary sinusoidal power signal with a lower polarity when the control signal is in the second state to form the data encoded power signal as a sinusoidal waveform between zero crossings; and transmitting the data encoded power signal to the at least one device of the system of devices to control a behavior of the at least one device. - View Dependent Claims (12, 13, 14, 15)
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16. A system comprising:
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a plurality of devices, each device of the plurality of devices being serially addressable; a two-wire communication network configured to transmit a data encoded power signal to address at least one device of the plurality of devices and to provide power to each device of the plurality of devices; a user interface configured to accept user input and to output information based at least in part on the user input; a processor in communication with the user interface and configured to accept the information and to output a control signal corresponding to command and address data that is responsive to the information, the control signal having first and second states; a core and coil transformer configured to transform a primary AC signal to a secondary sinusoidal power signal; a rectifier/bridge circuit in communication with the core and coil transformer and configured to connect one of a first end tap and a second end tap of the core and coil transformer to the two-wire communication network to output a data encoded power signal to the two-wire communication network to control a behavior of the at least one device, the rectifier/bridge circuit comprising a plurality of series-connected pairs of transistors with integral body diodes, gates of the transistors in communication with the control signal from the processor, at least one series-connected pair of transistors enabled when the control signal is in the first state and at least one of the other series-connected pairs of transistors enabled when the control signal is in the second state, the rectifier/bridge circuit outputting the secondary sinusoidal power signal with a higher polarity when the control signal is in the first state and outputting the secondary sinusoidal power signal with a lower polarity while the control signal is in the second state to form the data encoded power signal as a sinusoidal waveform between zero crossings. - View Dependent Claims (17, 18, 19, 20)
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Specification