System and method to determine condition of nozzles of an agricultural implement
In an aspect of the disclosure there is provided a system including nozzles disposed along an implement, a camera disposed on the implement to capture images of a spray from a nozzle of the nozzles over a time period and a processor to assign a rating to the images to account for the nozzle intermittently being off and not counting the nozzle as plugged. The processor to determine a running average for a condition of the nozzle using the assigned rating for the images.
1 . A system comprising:
a plurality of nozzles disposed along an implement;
a camera disposed on the implement to capture a plurality of images of a spray from a nozzle of the plurality of nozzles over a time period; and
a processor to assign a rating to the plurality of images to account for the nozzle intermittently being off and not counting the nozzle as plugged and to determine a running average for a condition of the nozzle using the assigned rating for the plurality of images.
2 . The system of claim 1 , wherein the nozzle is actuated with a pulse width modulation (PWM) actuator to open and close the nozzle.
3 . The system of claim 2 , wherein a number of images captured for the running average is determined based on a time period of at least one cycle of the PWM nozzle.
4 . The system of claim 3 , wherein the camera captures images at a frequency that is more than twice of a PWM frequency of the PWM nozzle to avoid aliasing.
5 . The system of claim 1 , wherein the processor to compare the running average of the condition of the nozzle to a predetermined fluid flow threshold indicator to indicate whether the nozzle has proper flow, low flow due to partial blockage, or no flow due to full blockage.
6 . The system of claim 5 , wherein the processor to determine that the nozzle has proper flow when the running average of the condition of the nozzle is equal to or greater than the fluid flow threshold indicator and determine that the nozzle has low flow when the running average is less than the threshold indicator.
7 . The system of claim 1 , wherein the processor to determine a frequency of a pulse width modulation (PWM) of the nozzle is 10 to 35 Hz.
8 . A computer-implemented method, comprising:
capturing, with a camera, a plurality of images of one or more spray patterns from a nozzle of an agricultural implement;
assigning a rating to each captured image to account for the nozzle intermittently being off and not counting the nozzle as plugged; and
determining a running average for a condition of the nozzle using the assigned rating for the plurality of images.
9 . The computer-implemented method of claim 8 , wherein the nozzle comprises a pulse width modulation (PWM) nozzle.
10 . The computer-implemented method of claim 9 , wherein a number of images captured for the running average is determined based on a time period of at least one cycle of the PWM nozzle.
11 . The computer-implemented method of claim 10 , wherein the camera captures images at a frequency that is more than twice of a PWM frequency of the PWM nozzle to avoid aliasing.
12 . The computer-implemented method of claim 8 , further comprising:
comparing the running average of the condition of the nozzle to a predetermined fluid flow threshold indicator to indicate whether the nozzle has proper flow, low flow due to partial blockage, or no flow due to full blockage.
13 . The computer-implemented method of claim 12 , further comprising:
determining that the nozzle has proper flow when the running average of the condition of the nozzle is equal to or greater than the fluid flow threshold indicator; and
determining that the nozzle has low flow when the running average is less than the threshold indicator.
14 . The computer-implemented method of claim 13 , further comprising:
displaying, with a display device, an amount of plugging if any for the nozzle.
15 . The computer-implemented method of claim 14 , wherein the plugging is displayed as a numerical amount, a color, or a combination of a color and numerical amount.