US 12,416,618 B2
Water quality detection device and cleaning method for sensor thereof
Tsung-Yu Tsai, Tainan (TW); Hung-Sheng Lin, New Taipei (TW); Cheng-Da Ko, Taipei (TW); and Chun-Te Chuang, Kaohsiung (TW)
Assigned to INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, Hsinchu (TW)
Filed by INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, Hsinchu (TW)
Filed on Feb. 17, 2023, as Appl. No. 18/111,230.
Claims priority of application No. 111141408 (TW), filed on Oct. 31, 2022.
Prior Publication US 2024/0142428 A1, May 2, 2024
Int. Cl. G01N 27/00 (2006.01); G01N 1/14 (2006.01); G01N 33/18 (2006.01)
CPC G01N 33/18 (2013.01) [G01N 1/14 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A water quality detection device, comprising:
a detection tank;
a sensor disposed on the detection tank and configured to sense a first liquid within the detection tank;
a cleaner configured to clean the sensor;
a first pump; and
a processor electrically connected to the sensor, the cleaner and the first pump, and configured to:
execute an initialization procedure, which comprises driving the sensor to sense the first liquid to obtain a plurality of initial sensing values and calculating a threshold value according to the initial sensing values;
drive the first pump to transport a second liquid to the detection tank after emptying the detection tank of the first liquid;
drive the sensor to sense the second liquid to obtain a sensing value of the second liquid, and determine whether the sensing value of the second liquid reaches the threshold value; and
drive the cleaner to operate when the sensing value of the second liquid reaches the threshold value.