US 12,253,506 B2
Method of anomaly detection, method of building upstream-and-downstream configuration, and management system of sensors
Yu-Lin Wang, Tainan (TW); Guang-Huei Gu, Tainan (TW); and Chih-Jen Chen, Tainan (TW)
Assigned to INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, Hsinchu (TW)
Filed by INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, Hsinchu (TW)
Filed on Oct. 19, 2022, as Appl. No. 17/969,641.
Claims priority of application No. 111127135 (TW), filed on Jul. 20, 2022.
Prior Publication US 2024/0027416 A1, Jan. 25, 2024
Int. Cl. G01N 33/00 (2006.01); G01N 33/18 (2006.01)
CPC G01N 33/0075 (2013.01) [G01N 33/18 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method of building upstream-and-downstream configuration of sensors, performed by a computing device, comprising:
obtaining two pieces of geographic location data of a target sensor and a candidate sensor;
determining at least one pollution-associated period according to a plurality of pieces of flow field data corresponding to different time, the two pieces of geographic location data and a plurality of pieces of target sensing data obtained by the target sensor;
for each of the at least one pollution-associated period, calculating a correlation between the pieces of target sensing data obtained during the pollution-associated period and a plurality of pieces of candidate sensing data obtained during the pollution-associated period by the candidate sensor to obtain a plurality of sensor correlations corresponding to the pollution-associated period;
determining a quantity ratio of sensor correlations that are greater than or equal to a correlation threshold;
when the quantity ratio is greater than or equal to a default ratio, determining the candidate sensor has an upstream-and-downstream relationship with the target sensor, and storing upstream-and-downstream relationship information corresponding to the candidate sensor and the target sensor, wherein the upstream-and-downstream relationship information indicates the candidate sensor being a satellite sensor of the target sensor.