Method and apparatus for reducing sensor power dissipation

Patent metadata

Field	Value
Publication number	US-10539419-B2
Application number	US-201715596568-A
Country	US
Kind code	B2
Filing date	May 16, 2017
Priority date	May 17, 2016
Publication date	Jan 21, 2020
Grant date	Jan 21, 2020

Abstract

A sensor produces the sensor data for a sensor data consumer. A facility receives a sensor profile of the sensor indicating a relationship between a sensor parameter operating range and a deviation of the sensor data as a result of scaling one or more sensor parameters. The facility receives a tolerance profile of the sensor data consumer indicating a tolerable degree of deviation of the sensor data and scales a parameter of the sensor according to the tolerance profile. The scaling reduces a power dissipation level of the sensor.

First claim

What is claimed is:

1. A system for providing sensor data to a sensor data consumer comprising:
a sensor configured to produce the sensor data; and
a facility comprising a processor and a memory configured to store non-transient instructions, which when executed by the processor performs the steps of:
receiving a sensor profile of the sensor indicating a relationship between a sensor parameter operating range and a resulting deviation of the sensor data;
receiving a tolerance profile of the sensor data consumer indicating a tolerable degree of deviation of the sensor data; and
scaling a parameter of the sensor according to the tolerance profile,

wherein said scaling reduces a power dissipation level of the sensor, and wherein said deviation comprises a difference between data output by the sensor with and without scaling the parameter.

2. The system of claim 1 , further comprising a sensor driver in communication with the sensor and configured to receive the sensor data and/or to control operation of the sensor, wherein the sensor driver is in communication with the facility and configured to control the sensor according to facility data received from the facility.

3. The system of claim 1 , wherein the tolerance profile comprises one of the group consisting of a latency tolerance, a loss or throughput tolerance, an offset value, and a value deviation tolerance.

4. The system of claim 1 , wherein scaling the parameter of the sensor further comprises changing a timing of when the sensor produces sensor data.

5. The system of claim 1 , wherein scaling the parameter of the sensor further comprises changing a timing of when the sensor produces sensor data.

6. The system of claim 1 , wherein scaling the parameter of the sensor further comprises changing a power parameter of the sensor.

7. The system of claim 6 , further comprising a voltage regulator, and wherein scaling the power parameter of the sensor comprises changing a voltage level provided to the sensor.

8. The system of claim 6 , further comprising the step of determining a tolerable degree of deviation in the sensor data resulting from changing the power parameter of the sensor.

9. The system of claim 8 , wherein an amount of the scaling of the power parameter is informed by the tolerable degree of deviation in the sensor data.

10. The system of claim 2 , further comprising an operating system operating in conjunction with the sensor driver and the facility.

11. The system of claim 1 , wherein the facility is configured to access the sensor data.

12. The system of claim 11 , wherein the processor further performs the steps of defining the tolerance profile and/or the sensor profile.

13. The system of claim 12 , wherein the facility is configured to define the tolerance profile based at least partially on needs of the sensor data consumer and/or the sensor profile.

14. A device in communication with a sensor configured to produce sensor data and provide sensor data to a sensor data consumer comprising:
a processor and a memory configured to store non-transient instructions, which when executed by the processor performs the steps of:
receiving a sensor profile of the sensor indicating relationship between a sensor parameter operating range and a resulting deviation of the sensor data;
receiving a tolerance profile of the sensor data consumer indicating a tolerable degree of deviation of the sensor data; and
scaling a parameter of the sensor and/or a sensor power supply according to the tolerance profile,

wherein said scaling reduces a power dissipation level of the sensor, and wherein said deviation comprises a difference between data output by the sensor with and without scaling the parameter.

15. The device of claim 14 , further comprising a sensor driver in communication with the sensor and configured to receive the sensor data and/or to control operation of the sensor, wherein the sensor driver is in communication with the facility and configured to control the sensor according to facility data received from the facility.

16. A method to be executed by a processor configured to execute non-transitory instructions stored in a memory to perform the steps of:
accessing a sensor profile of the sensor indicating a relationship between a sensor parameter operating range and a resulting deviation of the sensor data;
accessing a tolerance profile of a sensor data consumer indicating a tolerable degree of deviation of sensor data accessible to the sensor data consumer;
providing the tolerance profile to a facility in communication with a sensor driver configured to control the sensor; and
scaling a parameter of the sensor according to the tolerance profile to reduce a power dissipation level of the sensor,
wherein said deviation comprises a difference between data output by the sensor with and without scaling the parameter.

17. The method of claim 16 , further comprising the step of defining the sensor profile and/or the tolerance profile.

Assignees

• Massachusetts Inst Technology

Inventors

• Stanley-Marbell Phillip
• Rinard Martin C

Classifications

• G01C22/006

  Pedometers · CPC title

• G01P15/18

  in two or more dimensions · CPC title

• A61B5/112 Primary

  Gait analysis · CPC title

• A61B5/00

  Measuring for diagnostic purposes (radiation diagnosis A61B6/00; diagnosis by ultrasonic, sonic or infrasonic waves A61B8/00); Identification of persons · CPC title

• A61B5/1123

  Discriminating type of movement, e.g. walking or running (A61B5/1116, A61B5/112 take precedence) · CPC title