Electric vehicle noise sniffer and methods of mitigating packet flow interruptions by noise cancellation and avoidance of noise region envelopes
An electric vehicle noise sniffer and methods of mitigating packet flow interruptions by noise cancellation and avoidance of noise region envelopes are provided. A vehicle comprises: electrical component(s) that operate according to data indications: and a power line that conveys the data indications and power to the electrical component(s). A method comprises: determining an electrical characteristic of the data indications on the power line: determining a present electrical characteristic of noise on the power line and/or estimating a future electrical characteristic of the noise on the power line: and causing the data indications to change to a new electrical characteristic different from the present electrical characteristic and the future electrical characteristic of the noise on the power line to avoid interference of the noise with the data indications. The electrical characteristics are one or more of in frequency space, amplitude space and direct current offset space.
1 . A vehicle comprising:
one or more electrical components configured to operate according to data indications;
a power line configured to convey both the data indications and power to the one or more electrical components; and
a controller configured to:
determine an electrical characteristic of the data indications on the power line;
perform a plurality of determinations of present electrical characteristics of a noise signal, as the noise signal changes over time;
compare the present electrical characteristics of the noise signal as they change over time to identify a pattern of change of the present electrical characteristics as the noise signal changes over time;
use the pattern of change of the noise signal to estimate a future electrical characteristic at a given future time; and
cause the data indications to change to a new electrical characteristic that is different from a present electrical characteristic of the noise signal on the power line and the future electrical characteristic of the noise signal on the power line to avoid interference of the noise signal with the data indications as the noise signal changes over time,
wherein electrical characteristics are one or more of in frequency space, amplitude space and direct current (DC) offset space.
2 . The vehicle of claim 1 , wherein the controller is further configured to:
determine that one or more respective electrical characteristics of the noise signal is due to one or more of the one or more electrical components being actuated; and
when the one or more electrical components are later actuated, cause the data indications to change to the new electrical characteristic to avoid interference of the noise signal with the data indications that is due to the one or more of the one or more electrical components being actuated.
3 . The vehicle of claim 1 , wherein the controller is further configured to:
cancel the noise signal on the power line.
4 . The vehicle of claim 1 , wherein the controller is further configured to determine the present electrical characteristics of the noise signal on the power line by one or more of:
frequency scanning over a given frequency domain on the power line;
determining an amplitude of the noise signal on the power line; and
determining a DC offset of the noise signal on the power line.
5 . The vehicle of claim 1 , wherein the controller is further configured to cause the data indications to change to the new electrical characteristic by one or more of:
controlling the data indications to change to one or more of a given frequency, a given bandwidth, a given amplitude, and a given DC offset that one or more of: avoids one or more of a present frequency of the noise signal or a future estimated frequency of the noise signal; and achieves a given signal-to-noise ratio (SNR) and
communicating one or more of the given frequency, the given bandwidth, the given amplitude, and the given DC offset to the one or more other components to cause the one or more other components to one or more of transmit and receive the data indications at one or more of the given frequency, the given bandwidth, the given amplitude, and the given DC offset.
6 . The vehicle of claim 1 , wherein the controller is further configured to estimate the future electrical characteristic of the noise signal on the power line using one or more machine learning algorithms.
7 . The vehicle of claim 1 , wherein the controller is further configured to train one or more machine learning algorithms to estimate the future electrical characteristic of the noise signal on the power line.
8 . The vehicle of claim 1 , wherein the controller is further configured to share one or more indications of the future electrical characteristic of the noise signal on the power line with other vehicles.
9 . The vehicle of claim 1 , wherein the one or more one or more electrical components comprise one or more of a power conversion components, a motor and a communication unit.
10 . A method comprising:
at a vehicle comprising one or more electrical components configured to operate according to data indications and a power line configured to convey both the data indications and power to the one or more electrical components, determining, at the vehicle, an electrical characteristic of the data indications on the power line;
performing a plurality of determinations of present electrical characteristics of a noise signal, as the noise signal changes over time;
comparing the present electrical characteristics of the noise signal as they change over time to identify a pattern of change of the present electrical characteristics as the noise signal changes over time;
using the pattern of change of the noise signal to estimate a future electrical characteristic at a given future time; and
causing, at the vehicle, the data indications to change to a new electrical characteristic that is different from the present electrical characteristic of the noise signal on the power line and the future electrical characteristic of the noise signal on the power line to avoid interference of the noise signal with the data indications as the noise signal changes over time, wherein electrical characteristics are one or more of in frequency space, amplitude space and direct current (DC) offset space.
11 . The method of claim 10 , further comprising:
determining that one or more respective electrical characteristics of the noise signal is due to one or more of the one or more electrical components being actuated; and
when the one or more electrical components are later actuated, causing the data indications to change to the new electrical characteristic to avoid interference of the noise signal with the data indications that is due to the one or more of the one or more electrical components being actuated.
12 . The method of claim 10 , further comprising:
canceling the noise signal on the power line.
13 . The method of claim 10 , further comprising determining the present electrical characteristics of the noise signal on the power line by one or more of:
frequency scanning over a given frequency domain on the power line;
determining an amplitude of the noise signal on the power line; and
determining a DC offset of the noise signal on the power line.
14 . The method of claim 10 , further comprising causing the data indications to change to the new electrical characteristic by one or more of:
controlling the data indications to change to one or more of a given frequency, a given bandwidth, a given amplitude, and a given DC offset that one or more of: avoids one or more of a present frequency of the noise signal or a future estimated frequency of the noise signal; and achieves a given signal-to-noise ratio (SNR) and
communicating one or more of the given frequency, the given bandwidth, the given amplitude, and the given DC offset to the one or more other components to cause the one or more other components to one or more of transmit and receive the data indications at one or more of the given frequency, the given bandwidth, the given amplitude, and the given DC offset.
15 . The method of claim 10 , further comprising estimating the future electrical characteristic of the noise signal on the power line using one or more machine learning algorithms.
16 . The method of claim 10 , further comprising training one or more machine learning algorithms to estimate the future electrical characteristic of the noise signal on the power line.
17 . The method of claim 10 , further comprising sharing one or more indications of the future electrical characteristic of the noise signal on the power line with other vehicles.
18 . The method of claim 10 , wherein the one or more one or more electrical components comprise one or more of a power conversion components, a motor and a communication unit.