Systems and methods for dynamic voltage scaling of image sensors towards low-power iot vision
AssigneeArizona Board of Regents on behalf of Arizona State University
InventorsVenkatesh Kodukula, Mason Manetta, Robert LiKamWa
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Abstract
A system for implementation within a visual sensing pipeline facilitates dynamic voltage scaling for image sensors, enabling image sensors to capture frames at varying fidelities for improved energy efficiency. The system includes hardware and software interfaces to enable dynamic voltage scaling, and are demonstrated with integration into an RPi-based streaming platform. The system is evaluated with representative IoT/AR workloads over various voltage scheduling policies.
Claims20
A system, comprising:
- a voltage controller in communication with an image sensor, the voltage controller being configured to apply a supply voltage to the image sensor;
- and
- a memory in communication with one or more processors and the voltage controller, the memory including instructions executable by the one or more processors to:
- determine, for one or more frames to be captured by the image sensor, a target analog voltage value for the image sensor based on a voltage requirement of a vision application associated with the image sensor and in view of an undervolting limit of the image sensor;
- generate, by the voltage controller, an analog voltage having the target analog voltage value;
- and
- apply the analog voltage to the image sensor as the supply voltage.
A method, comprising:
- determining, at a processor and for one or more frames to be captured by an image sensor in communication with the processor, a target analog voltage value for the image sensor based on a voltage requirement of a vision application associated with the image sensor and in view of an undervolting limit of the image sensor;
- generating, by a voltage controller in communication with the image sensor and the processor, an analog voltage having the target analog voltage value;
- and
- applying the analog voltage to the image sensor as a supply voltage.
One or more non-transitory computer readable media including instructions executable by one or more processors to:
- determine an undervolting limit of an image sensor;
- determine, for one or more frames to be captured by the image sensor, a target analog voltage value for the image sensor based on a voltage requirement of a vision application associated with the image sensor and in view of an undervolting limit of the image sensor;
- generate, by a voltage controller in communication with the image sensor, an analog voltage having the target analog voltage value;
- and
- apply the analog voltage to the image sensor as a supply voltage.
Dependencies are inferred from the claim text.