US 12,175,680 B2
System and method for monitoring health of low-cost sensors used in soil moisture measurement
Prachin Lalit Jain, Thane West (IN); Swagatam Bose Choudhury, Thane West (IN); Prakruti Vinodchandra Bhatt, Thane West (IN); Sanat Sarangi, Thane West (IN); and Srinivasu Pappula, Thane West (IN)
Assigned to TATA CONSULTANCY SERVICES LIMITED, Mumbai (IN)
Appl. No. 17/594,378
Filed by Tata Consultancy Services Limited, Mumbai (IN)
PCT Filed Nov. 19, 2020, PCT No. PCT/IN2020/050971
§ 371(c)(1), (2) Date Oct. 13, 2021,
PCT Pub. No. WO2021/144807, PCT Pub. Date Jul. 22, 2021.
Claims priority of application No. 202021001465 (IN), filed on Jan. 13, 2020.
Prior Publication US 2022/0349838 A1, Nov. 3, 2022
Int. Cl. G06T 7/136 (2017.01); G01N 21/88 (2006.01); G01N 21/956 (2006.01); G01N 33/24 (2006.01); G06T 7/12 (2017.01); G06V 10/30 (2022.01); G06V 10/44 (2022.01)
CPC G06T 7/136 (2017.01) [G01N 21/95684 (2013.01); G01N 33/246 (2013.01); G06T 7/12 (2017.01); G06V 10/30 (2022.01); G06V 10/44 (2022.01); G01N 2021/8887 (2013.01); G06T 2207/20028 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A system comprising:
at least one memory storing a plurality of instructions;
one or more hardware processors communicably coupled with the at least one memory, wherein the one or more hardware processors are configured to execute one or more modules;
at least one first sensor configured to measure soil moisture of a field, wherein the first sensor works on a principle of resistance or capacitance through a sensing element;
a calibration module configured to calibrate the first sensor based on a set of predefined parameters to achieve a predefined value of the soil moisture, wherein the calibrated first sensor is employed in the field to measure soil moisture;
a multimedia component configured to capture at least one image of the first sensor, wherein the captured at least one image is pre-processed to remove noise and detect a binary edge-map of the at least one captured image;
an identification module configured to identify a contour of a probe of the first sensor from the pre-processed at least one image based on a topological structural analysis on the binary edge-map of the image, wherein the identified contour of the probe provides a silver metal pixel of the probe and wherein all pixels satisfying hue saturation value (HSV) threshold range for all channels are considered as silver values, and value of Hue in the HSV being any degree, value of saturation in the HSV ranges from 0% to 4% and value in the HSV ranges from 60% to 85%;
a determining module configured to determine a percentage of the silver metal pixel and a connectivity of the silver metal pixel with a base of the first sensor;
an analyzing module configured to analyze performance of the first sensor using a predefined range of values of the soil moisture, the determined percentage of the silver metal pixel and the connectivity of the silver metal pixel with the base and an evaluation of degradation stages of the first sensor; and
a recommendation module configured to recommend one or more corrective measures for the first sensor based on the performance analysis, wherein the one or more corrective measures include modification in the first sensor or replacement of the first sensor with a new sensor.