초록 ▼

Irrigation control apparatus includes a mast or masts, a soil moisture sensor or sensors associated with a lower portion of each mast, data transmission apparatus associated with an upper portion of each mast to transmit data continuously measured by the sensor, and circuitry to process that transmi

Irrigation control apparatus includes a mast or masts, a soil moisture sensor or sensors associated with a lower portion of each mast, data transmission apparatus associated with an upper portion of each mast to transmit data continuously measured by the sensor, and circuitry to process that transmitted data.

대표청구항 ▼

In irrigation control apparatus, the combination comprising (a) a mast having a lower portion adapted to be removably inserted into the earth, (b) soil moisture sensing means associated with said lower portion of the mast, and (c) data transmitting means on an upper portion of the mast and operative

In irrigation control apparatus, the combination comprising (a) a mast having a lower portion adapted to be removably inserted into the earth, (b) soil moisture sensing means associated with said lower portion of the mast, and (c) data transmitting means on an upper portion of the mast and operatively connected with said sensing means for transmitting to a central station data indicative of soil moisture conditions at the location of the mast, (d) said sensing means including vertically spaced tensiometers carried by said lower portion of the mast for establishing moisture gradient data at a known spacing, (e) there being a multiplicity of said masts with said (b) and (c) elements associated therewith, said masts inserted into the earth at spaced locations in a field or fields, (f) and a computer at said central station operatively connected to said multiple data transmitting means associated with said masts, via multiple data transmission links.