US 11,700,801 B2
Alternate wetting and drying (AWD) system and method
My T. Nguyen, Tra Vinh (VN); Cuong Q. Hong, Tra Vinh (VN); Luong V. Truong, Chau Thanh District (VN); Toan Q. Tran, Cang Long District (VN); Trieu T. Le, Hon Dat District (VN); Bien T. Mai, Cau Ke District (VN); An Trinh, Tra Vinh (VN); Thong A. Nguyen, Tra Vinh (VN); and Khang M. Duong, Ninh Kieu (VN)
Assigned to RYNAN TECHNOLOGIES PTE. LTD., Singapore (SG)
Filed by RYNAN TECHNOLOGIES PTE. LTD., Singapore (SG)
Filed on May 26, 2022, as Appl. No. 17/825,446.
Application 17/825,446 is a division of application No. 16/330,834, granted, now 11,369,067, previously published as PCT/CA2017/051045, filed on Sep. 7, 2017.
Claims priority of provisional application 62/384,318, filed on Sep. 7, 2016.
Prior Publication US 2022/0279740 A1, Sep. 8, 2022
Int. Cl. A01G 25/16 (2006.01); A01G 25/00 (2006.01)
CPC A01G 25/165 (2013.01) [A01G 25/00 (2013.01); A01G 25/16 (2013.01); A01G 25/167 (2013.01); Y10T 137/189 (2015.04); Y10T 137/1866 (2015.04)] 18 Claims
OG exemplary drawing
 
1. An Alternate Wetting and Drying (AWD) method for irrigating a field using a pump comprising an outlet supplying water to the field and an inlet connected to a water source, the method comprising:
placing a water depth sensor at a sensing location in the field;
sensing using said sensor from time to time a water depth below a surface of the field at the sensing location; and
transmitting said sensed water depth to a pump controller located remotely from the sensing location using a wireless connection;
wherein said pump controller enables the pump when said sensed water depth is below a low water depth.