Power manager to support less-than-nominal conditions in a machine vision system
An example method for managing power within an imaging device includes: determining an interface of the imaging device via which the imaging device is receiving power; based on the interface, determining a power budget associated with the interface; determining which fixed load components of the imaging device are enabled; calculating a remaining power budget by subtracting a power consumption of the enabled fixed load components from the power budget; responsive to the remaining power budget being positive, configuring non-fixed load components such that a total power consumption of the non-fixed load components does not exceed the remaining power budget; and responsive to the remaining power budget being negative, providing, via a user interface, a notification of insufficient power budget.
1 . A method for managing power within an imaging device, the method comprising:
determining an interface of the imaging device via which the imaging device is receiving power;
based on the interface, determining a power budget associated with the interface;
determining which fixed load components of the imaging device are enabled;
calculating a remaining power budget by subtracting a power consumption of the enabled fixed load components from the power budget;
responsive to the remaining power budget being positive, configuring one or more non-fixed load components such that a total power consumption of the non-fixed load components does not exceed the remaining power budget; and
responsive to the remaining power budget being negative, providing, via a user interface, a notification of insufficient power budget.
2 . The method of claim 1 , wherein the determining the interface includes:
determining the interface at power up of the imaging device.
3 . The method of claim 1 , wherein the determining the power budget includes:
responsive to determining that the interface is an external power supply interface, measuring a voltage at the interface.
4 . The method of claim 1 , wherein responsive to the remaining power budget being positive, the configuring the one or more non-fixed load components includes:
configuring an illumination assembly of the imaging device.
5 . The method of claim 4 , wherein the configuring the illumination assembly includes:
determining a combination of settings including an exposure time, a number of activated light sources, and an intensity of the illumination assembly such that the total power consumption does not exceed the remaining power budget; and
varying the illumination assembly, via a controller, in accordance with the combination of settings.
6 . The method of claim 5 , wherein the determining the combination of settings includes:
determining the combination of settings leaving one of the exposure time, the number of activated light sources, or the intensity fixed.
7 . The method of claim 5 , wherein the determining the combination of settings includes:
determining the combination of settings leaving two of the exposure time, the number of activated light sources, or the intensity fixed.
8 . The method of claim 5 , wherein the determining the combination of settings includes:
receiving a selection of one or two of the exposure time, the number of activated light sources, or the intensity via the user interface; and
responsive to the selection, determining the combination of settings leaving the one or two of the exposure time, the number of activated light sources, or the intensity fixed.
9 . The method of claim 5 , further comprising:
providing, via the user interface, an indication of the combination of settings.
10 . The method of claim 4 , wherein the configuring the illumination assembly includes:
determining a maximum exposure time for the illumination assembly based on the remaining power budget; and
preventing the illumination assembly from operating with an exposure time exceeding the maximum exposure time.
11 . The method of claim 10 , further comprising:
providing, via the user interface, an indication of the maximum exposure time.
12 . The method of claim 4 , wherein the configuring the illumination assembly includes:
determining a maximum number of light sources of the illumination assembly that can be activated based on the remaining power budget; and
preventing the illumination assembly from operating with a number of light sources exceeding the maximum number of light sources.
13 . The method of claim 12 , further comprising:
providing, via the user interface, an indication of the maximum number of light sources.
14 . The method of claim 4 , wherein the configuring the illumination assembly includes:
determining a maximum intensity of the illumination assembly based on the remaining power budget; and
preventing the illumination assembly from operating with an intensity exceeding the maximum intensity.
15 . The method of claim 14 , further comprising:
providing, via the user interface, an indication of the maximum intensity.
16 . The method of claim 1 , further comprising:
detecting a change in the enabled fixed load components; and
responsive to the detecting, recalculating the remaining power budget.
17 . The method of claim 1 , wherein the determining which fixed load components are enabled includes:
determining whether one or more of an ethernet port, a Universal Serial Bus (USB) port, a display port, or a General Purpose Input/Output (GPIO) port are in a connected state.
18 . The method of claim 1 , wherein the determining which fixed load components are enabled includes:
determining which sensors of the imaging device are enabled.
19 . A system comprising:
an imaging device;
a computing device implementing a user interface and communicatively coupled to the imaging device;
the imaging device configured to:
determine an interface of the imaging device via which the imaging device is receiving power;
based on the interface, determine a power budget associated with the interface;
determine which fixed load components of the imaging device are enabled;
calculate a remaining power budget by subtracting a power consumption of the enabled fixed load components from the power budget;
responsive to the remaining power budget being positive, configure one or more non-fixed load components such that a total power consumption of the non-fixed load components does not exceed the remaining power budget; and
responsive to the remaining power budget being negative, transmit an indication to the computing device to cause the user interface to display a notification of insufficient power budget.
20 . An imaging device comprising one or more processors configured to:
determine an interface of the imaging device via which the imaging device is receiving power;
based on the interface, determine a power budget associated with the interface;
determine which fixed load components of the imaging device are enabled;
calculate a remaining power budget by subtracting a power consumption of the enabled fixed load components from the power budget;
responsive to the remaining power budget being positive, configure one or more non-fixed load components such that a total power consumption of the non-fixed load components does not exceed the remaining power budget; and
responsive to the remaining power budget being negative, transmit a notification of insufficient power budget to a computing device.