Time-Multiplexed Power and Data Transmission via Voltage Switching
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Solution Overview
Problem
Existing systems for transmitting power and data over a single pair of wires require additional components like low-pass or high-pass filters, which increase cost and size, making them undesirable for small and inexpensive devices.
Innovation Solution
A system that employs time-multiplexing to transmit power and data over a single pair of electrical contacts, using a switch element in the receiver device to connect either the power or data circuit based on voltage thresholds, eliminating the need for filters and synchronization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If frequency multiplexing with low-pass or high-pass filters is used to transmit power and data over a single wire pair, then power and data transmission is enabled, but device cost and size increase due to additional filter components
Solution Approach 1:
The patent applies time-multiplexing where power and data are transmitted in periodic time slots instead of simultaneously. The host device alternates between power transmission mode and data transmission mode, allowing the receiver to process data during power transmission and vice versa. This eliminates the need for frequency separation filters while enabling dual functionality over a single wire pair.
Solution Approach 2:
The patent changes the transmission parameter from frequency-based separation to time-based separation. By varying the time domain parameter (transmitting power during certain time intervals and data during other intervals), the system achieves multiplexing without requiring filter components that would be necessary for frequency-based separation.
2Productivity
If frequency multiplexing is used for simultaneous power and data transmission, then both signals can be transmitted at the same time, but additional filter components are required which increase expense and space requirements
Solution Approach 1:
The system uses periodic time-multiplexing where power transmission and data transmission occur in alternating time slots. The receiver device includes a switch element that periodically connects to either the power receiving circuit or data receiving circuit based on the current time slot, enabling full utilization of the transmission medium without requiring simultaneous signal separation filters.
Solution Approach 2:
The host device and receiver device establish a time-multiplexing protocol beforehand, where data transmission occurs during power transmission time slots and power transmission occurs during data transmission time slots. This preliminary arrangement allows both functions to be achieved without complex real-time signal separation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach results in a compact, inexpensive, and reliable solution for power and data transmission, suitable for small devices like handheld aerosol-generating systems, without the need for dedicated time slots or filters, allowing for efficient power and data transfer.
Implementation Method 1
a switch element configured to connect the input to the power receiving circuit or the data receiving circuit dependent on a voltage of a signal received from the input
Data Source
AI summary
There is provided a system for transmitting power and data from a host device to a receiver device over an electrical connection, including a host device configured to transmit power and data through an output, and configured to transmit the power through the output at different times to the data; a receiver device having an input connectable to the output of the host device, the receiver device including a power receiving circuit, a data receiving circuit, and a switch element configured to connect the input to the power receiving circuit or the data receiving circuit dependent on a voltage of a signal received from the input. There is also provided a receiver device for receiving power and data from the host device.