NZ616251B2 - Irrigation system having an applicant dispersal assembly - Google Patents
Irrigation system having an applicant dispersal assembly Download PDFInfo
- Publication number
- NZ616251B2 NZ616251B2 NZ616251A NZ61625112A NZ616251B2 NZ 616251 B2 NZ616251 B2 NZ 616251B2 NZ 616251 A NZ616251 A NZ 616251A NZ 61625112 A NZ61625112 A NZ 61625112A NZ 616251 B2 NZ616251 B2 NZ 616251B2
- Authority
- NZ
- New Zealand
- Prior art keywords
- applicant
- assembly
- pump assembly
- dispersal
- irrigation system
- Prior art date
Links
- 230000002262 irrigation Effects 0.000 title claims abstract description 119
- 238000003973 irrigation Methods 0.000 title claims abstract description 117
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 230000000875 corresponding Effects 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 2
- 239000012530 fluid Substances 0.000 abstract description 28
- 238000006073 displacement reaction Methods 0.000 description 18
- 230000000712 assembly Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 3
- 239000003337 fertilizer Substances 0.000 description 3
- 239000000575 pesticide Substances 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 230000001702 transmitter Effects 0.000 description 3
- 230000002363 herbicidal Effects 0.000 description 2
- 239000004009 herbicide Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 239000004698 Polyethylene (PE) Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000001010 compromised Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/09—Watering arrangements making use of movable installations on wheels or the like
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/09—Watering arrangements making use of movable installations on wheels or the like
- A01G25/092—Watering arrangements making use of movable installations on wheels or the like movable around a pivot centre
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/16—Control of watering
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D7/00—Control of flow
- G05D7/06—Control of flow characterised by the use of electric means
- G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
- G05D7/0629—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means
- G05D7/0676—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on flow sources
Abstract
applicant dispersal assembly (200) for pivoted irrigation is described. The assembly includes a plurality of pumps (208) which take water or other fluid from a main pipe or conduit (120/122) and feed them to drop hoses (220) each with sprinkler heads (226). The pump has a control unit and transceiver that receives and stores information that is used to determine the amount of water to be dispersed on the field to be watered. The amount of fluid dispersed can depend on the speed of the assembly, field position, etc. iver that receives and stores information that is used to determine the amount of water to be dispersed on the field to be watered. The amount of fluid dispersed can depend on the speed of the assembly, field position, etc.
Description
IRRIGATION SYSTEM HAVING AN APPLICANT DISPERSAL ASSEMBLY
BACKGROUND
Modern day agriculture has become increasingly efficient in the past century and this
trend must continue in order to produce a sufficient food supply for the increasing world
population. A notable advancement in agricultural production was the introduction of
mechanized irrigation systems, such as the center pivot and linear move irrigators. These
irrigation systems make it possible to irrigate entire fields thereby reducing a crop yield’s
vulnerability to extreme weather conditions. The ability to monitor and to control the amount
of water and/or nutrients applied to an agricultural field has increased the amount of farmable
acres in the world and increases the likelihood of a profitable crop yield. It is an object of the
invention in to at least provide the public with a useful choice.
SUMMARY
An applicant dispersal assembly is described that couples to an irrigation system. It is
contemplated that the irrigation system may be a center pivot irrigation system, a linear move
irrigation system, or the like. The applicant dispersal assembly is configured to receive an
applicant and selectively adjust a flow rate of the applicant. In an implementation, the applicant
dispersal assembly includes a pump assembly configured to couple to an irrigation conduit (e.g.,
an irrigation pipe). The irrigation conduit is configured to provide an applicant to the pump
assembly for dispersing over a cultivation area (e.g., a field). The pump assembly is configured
to pump the applicant and to selectively adjust a flow rate of the applicant. The applicant
dispersal assembly also includes an applicant dispersal device that is coupled to the pump
assembly. The applicant dispersal device is configured to disperse the applicant.
According to another aspect of the invention there is provided an applicant dispersal assembly
for irrigating a chosen field, the assembly comprising:
a main water conduit;
a plurality of drop hoses extending from the water conduit, wherein the plurality of drop hoses
are comprised of a plurality of sprinkler heads connected to the ends of the plurality of drop
hoses;
(followed by page 1a)
wherein each drop hose is connected to a pump assembly, wherein each pump assembly is
positioned between each sprinkler head and the supply conduit;
wherein the pump assembly comprises a transceiver element which is configured to receive
instructions regarding the applicant dispersal rate for the pump assembly;
a control element, wherein the control element is configured to monitor the operating conditions
of the dispersal assembly; wherein the operating conditions comprise the ground speed of the
assembly, the field position of the assembly and an applicant depth parameter;
wherein the control element is further configured to receive and store a water application map for
the chosen field to be irrigated; wherein, the water application map is generated at a remote
location and received at the control element via a wireless transmission; further wherein the
control device compares the determined field position of the assembly with the data from the
water application map; and
further wherein the control element is further configured to dynamically adjust the disbursement
rate of each drop hose based on data from the water application map and at least in part on the
ground speed of the assembly, the field position of the assembly and an applicant depth
parameter.
Unless the context clearly requires otherwise, throughout the description and claims the terms
“comprise”, “comprising” and the like are to be construed in an inclusive sense, as opposed to an
exclusive or exhaustive sense. That is, in the sense of “including, but not limited to”.
DRAWINGS
The detailed description is described with reference to the accompanying figures. The
use of the same reference numbers in different instances in the description and the figures may
indicate similar or identical items.
is an isometric perspective view of an irrigation system in accordance with an
example implementation of the present disclosure, wherein the irrigation system includes a
applicant dispersal assembly.
is a block diagram illustrating a control device of the irrigation system shown in
in accordance with an example implementation of the present disclosure.
(followed by page 2)
is a partial side elevation view of an applicant dispersal assembly in
accordance with an implementation of the present disclosure, wherein the applicant dispersal
assembly includes an applicant supply conduit, a pump assembly, and applicant dispersal
device.
is a block diagram illustrating a pump assembly in accordance with an
example implementation of the present disclosure, wherein the pump assembly is an
electrically controlled magnetic (ECM) pump assembly.
is a flow diagram illustrating an example method for selectively adjusting a
flow rate of an applicant through an applicant dispersal assembly, such as the applicant
dispersal assembly shown in
is a flow diagram illustrating another example method for selectively adjusting
a flow rate of an applicant through an applicant dispersal assembly, such as the applicant
dispersal assembly shown in
DETAILED DESCRIPTION
Overview
Many irrigation systems apply water to fields having up to six hundred and forty
(640) acres. This field sizemay beofvarying field, elevation, and soil conditions that require
different amounts of water and/or nutrients to be applied at individual locations within the
field. However, mechanized irrigations systems currently in use only allow for water to be
applied at a constant flow rate or a constant application rate throughout the entire length of
the system. The constant application rate requires an operator to set a flow rate
corresponding to the most predominate field, soil, elevation, or crop condition along the
entire length system. This limitation often results in overwatering portions of the field while
under watering other portions of the field, which reduces the efficiency of the application of
water and/ornutrients aswell asresulting inpotential damage to the crops.
Accordingly, an irrigation system that includes an applicant dispersal assembly is
described. It is contemplated that the irrigation system may be a center pivot irrigation
system, a linear move irrigation system, or the like. The applicant dispersal assembly is
configured to receive an applicant and selectively adjust a flow rate of the applicant. In an
implementation, the applicant dispersal assembly includes a pump assembly configured to
couple to an irrigation conduit (e.g., an irrigation pipe). The irrigation conduit is configured
to provide an applicant to the pump assembly for dispersing over a cultivation area (e.g., a
field). The pump assembly is configured to pump the applicant and to selectively adjust a
flow rate of the applicant. In an implementation, the pump assembly is a variable-frequency
drive (VFD) pump assembly. The applicant dispersal assembly also includes an applicant
dispersal device that is coupled to the pump assembly. The applicant dispersal device is
configured to disperse the applicant. In a specific implementation, the applicant dispersal
device is a sprinkler assembly with a sprinkler head.
The irrigation system includes a control device (e.g., control panel) in electronic
communication with each pump assembly. For example, the control device may utilize a
computer executable program (e.g., a water application map), that when executed, is
configured to cause the pump to vary the flow of applicant (or water). For instance, the
computer executable program may include data and/or parameters representing the desired
flow rate for specific areas of a cultivation area. In an implementation, the control device is
configured to transmit a signal via a communication module to the various pump assemblies
coupled tothe irrigation system.
Example Implementations
FIGS. 1A through 3 illustrate a self-propelled (e.g., mechanized) irrigation system
100 in accordance with example implementations of the present disclosure. Examples of
self-propelled irrigation systems include a center pivot irrigation system, a linear move
irrigation system, or the like. illustrates an embodiment of the present disclosure
where the irrigation system 100 is a center pivot irrigation system. However, it is
contemplated that the present disclosure may be implemented in other self-propelled
irrigation systems (e.g., linear move irrigation systems). As shown, the system 100 includes
a center pivot structure 102, a main section assembly 104 (irrigation section assembly)
coupled (e.g., connected) to the center pivot structure 102. The center pivot structure 102 has
access to a well, a water repository (e.g., water tank), or other fluid source 103, to furnish
water to the irrigation system 100. For instance, the well may be located under the center
pivot structure 102. In another instance, the well may be in close proximity to the cultivation
area (e.g., field). The fluid source may be coupled to a repository or other source of
agricultural products to inject fertilizers, pesticides, and/or other chemicals into the fluids to
create an applicant for application during irrigation. Thus, the applicant may be water,
fertilizer, herbicide, pesticide, combinations thereof, or the like. The irrigation system 100
also includes a main fluid displacement device 105 (e.g., a main pump assembly) configured
to furnish applicant throughout the irrigation system 100. For example, the main fluid
displacement device 105 may assist in displacing fluid from the fluid source (e.g., well, water
repository, etc.) to the conduit portions of the irrigation system, which are described herein.
The center pivot structure 102 can be fixed or can be towable such that an operator can move
the irrigation system 100 from one field to another. In an implementation, the center pivot
structure 102 may comprise a frame assembly (e.g., galvanized steel frame assembly, and so
forth).
The main section assembly 104 includes a number of interconnected spans 106, 108
(e.g., irrigation spans) supported by one or more tower structures 110 and an end tower
structure 112. The tower structures 110 may be any tower configuration known in the art to
adequately support the conduits (e.g., water pipe sections) described herein. It is understood
that the section assembly 104 may include any number of spans and tower structures.
The tower structures 110, 112 each include wheels 114, 116, respectively, to assist in
traversing (e.g., pivoting) the irrigation system 100 about a cultivation area (e.g., field).
While only wheel 114, 116 is shown mounted to the respective tower structure 110, 112, it is
understood that each tower structure 110, 112 may include two wheels. In an
implementation, the wheels 114, 116 may be driven by a suitable drive unit 118 (e.g., drive
motor), or the like, to assist in traversing the system 100 about the specified area. For
example, each tower structure 110 may include a drive unit 118 to propel the respective tower
structure 110, 112 (and the irrigation system 100) through the cultivation area. In an
implementation, each drive unit 118 may be controlled by a stop system so that the drive unit
118 canbe slowed or completely shut down in the event of an adverse circumstance.
As shown in , each span 106, 108 includes conduits 120, 122 (e.g., pipes) that
are configured to carry (e.g., transport, provide, and so forth) liquid (e.g., applicant) along the
length ofthe system 100 to one or more variable applicant dispersal assemblies 200 (see that are configured to irrigate the cultivation area. Each conduit 120, 122 may be coupled
to one another to allow fluid communication between each conduit. In an implementation,
the conduits 120, 122 may be supported by truss-type framework structures 124, 126. Thus,
the main fluid displacement device 105 may be configured to displace applicant through the
conduits 120, 122. As shown in , the section assembly 104 includes an end gun 128
mounted to the end tower structure 112. In an implementation, the end gun 128 is a suitable
pressure sprayer configured to be activated at the corners of a field or other designated areas
to increase the amount of land that can be irrigated.
As shown in FIGS. 1A and IB, the irrigation system 100 includes a control device
130 (e.g., control panel) that is in electronic communication with one or more components of
the system 100. For example, the control device 130 may be in electronic communication
with one or more tower boxes mounted at one or more tower structures 110, 112 and a
position sensor 132 utilized to determine an approximate position of the irrigation system
(e.g., determining the approximate position of the end tower structure 112 within the
cultivation area with respect to the center pivot structure 102). For example, the position
sensor 132 may be a GPS sensor, or the like.
In an implementation, the control device 130 is mounted to the central pivot structure
102, a control cart, or atower structure 110, 112. The control device 130 is generally located
on the structural element of the irrigation system 100 where the applicant/water is introduced
into the irrigation system; however, other configurations known in the art are within the
scope ofthe present disclosure.
The control device 130 is configured to monitor operating conditions and configured
to control various functions of the irrigation system 100. In certain implementations, the
control device 130 actively monitors the irrigation system's 100 function and performance
including, but not limited to: a position of one or more conduit sections 120, 122 or tower
structures 110, 112 (by way of the position sensor 132), whether the irrigation system 100 is
powered on or off, a voltage parameter associated with the irrigation system 100, a motor
speed parameter associated with the irrigation system 100, an approximate ground speed
parameter associated with the irrigation system 100, a direction parameter associated with the
irrigation system 100, a diagnostic parameter associated with the irrigation system 100,
whether the applicant is being supplied to the irrigation system 100 (e.g., whether the main
fluid displacement device 105 is operational), whether the Stop in Slot (SIS) ispowered on or
off, an applicant pressure associated with the irrigation system 100, a time parameter, a date
parameter, a field position parameter of the irrigation system components, end-gun status,
and whether the programs (e.g., software programs, etc.) are running properly. The control
device 130 also controls the irrigation system's 100 functions and settings, including, but not
limited to: start and stop, selectively powering the main fluid displacement device 105, an
applicant application depth parameter, a direction of travel associated with the irrigation
system 100, selectively powering the SIS, automatically reversing or stopping the irrigation
system 100, automatically restarting the irrigation system 100, providing an operator
auxiliary control to the system 100, writing and editing irrigation programs (e.g., irrigation
software programs), and controlling sector and sequential programs (e.g., software
programs). In another implementation, the control device 130 may cause an alert to be issued
to the operator ifthere are any errors in the operation ofthe irrigation system 100 or if any of
the functions or conditions monitored by the control device 130 have been compromised
(e.g., ceased operation or are outside an acceptable range).
The control device 130 may be housed in a weather-proof box and includes at least a
memory 134 to store one or more software programs (e.g., software modules), a processor
136 electronically coupled to the memory 134, a user-interface 138, and a communications
module 140 configured to transmit one or more signals to instruct a pump assembly
(described herein) to pump at the desired flow rate (see FIG. IB). Thus, the processor 136
may be configured to cause the communication module 140 to transmit one or more signals
to instruct the pump assembly to pump at the desired flow rate. The communication module
140 is also configured to facilitate communication over a communication network. The
communication module 140 may be representative of a variety of communication
components and functionality, including, but not limited to: one or more antennas, a
transmitter and/or receiver, a transceiver, or the like. The control device 130 is generally
operated using proprietary software and may be connected to a communication network (e.g.,
a wireless network, a wired network, combinations thereof, or the like) that allows a user to
remotely input operational parameters, remotely view the operational status of the irrigation
system 100, and receive remote alerts if the irrigation system 100 is not operating correctly.
The control device 130 may be in electronic communication with the various sensors,
switches, motors, valves, pumps, and monitors that control the operation of the irrigation
system 100, which allows the control device 130 to monitor the operating
parameters/conditions of the irrigation system 100. It is understood that many
implementations ofthe control device 130 are known in the art and all such implementations
of the control device 130 are within the scope of the present disclosure. The user interface
138 is representative of functionality to provide an operator an interface with the control
device 130 (e.g., a graphical user interface in communication with input devices, etc.).
As shown in the irrigation system 100 includes an applicant dispersal
assembly 200. Each applicant dispersal assembly 200 includes an applicant supply conduit,
such as a U-pipe 202, coupled (e.g., removably coupled) to conduits 120, 122. In an
implementation, the U-pipe 202 is coupled to an upper surface 204 (surface opposite ground)
of the conduits 120, 122 via a connector 206. The U-pipe 202 is also coupled to a secondary
fluid displacement device, such as a pump assembly. In an implementation, the pump
assembly is avariable frequency drive (VFD) pump assembly 208. For example, the first end
210 of the U-pipe 202 is coupled (e.g., via male/female thread connectors, etc.) to the
connector 206, and the second end 212 of the U-pipe 202 is coupled to the VFD pump
assembly 208. As shown in the second end 212 of the U-pipe 202 may be coupled to
the VFD pump assembly 208 by way of a pressure regulator 214 (e.g., the pressure regulator
214 may be disposed between the U-pipe 202 and the pump assembly 208), which is
configured to prevent the flow of applicant through the regulator 214 at (or above) a pre
determined pressure. In this implementation, the first end 216 of the VFD pump assembly
208 is coupled (operably coupled) to the pressure regulator 214, and the second end 218 of
the pump assembly 208 is coupled to a first end 219 of a tube/pipe, such as a drop hose 220.
However, it is contemplated that the applicant dispersal assembly 200 may not include a
pressure regulator in some implementations. Instead, the first end 216 of the VFD pump
assembly 208 may be coupled to the second end 212 of the U-pipe 202. The second end 221
of the drop hose 220 is coupled (operably coupled) to an applicant dispersal device 222 at the
other end (e.g., end opposite the pump assembly 208 connection). It is contemplated that the
length of the drop hose 220 may vary according to the requirements of the irrigation system
100. For example, the length of the drop hose 220 generally corresponds to the type of crop
being grown within the cultivation area. In another implementation, the drop hose 220 may
also bemanufactured from rigid or flexible materials.
In implementations, the applicant dispersal device 222 is a sprinkler 224 (e.g., a
sprinkler assembly) with a sprinkler head 226. There are multiple known sprinklers 224 and
sprinkler heads 226, spacing and configurations known in the art. Sprinklers 224 and
sprinkler heads 226 can be made from any material known in the art, including but not
limited to: PVC, polyethylene, various other plastic formulations, aluminum, rubber, steel,
and other metals. Factors considered in selecting a sprinkler head and sprinkler assembly
include, but are not limited to: the crop being grown, the type of applicant (water, fertilizer,
herbicide or pesticide), the type of soil, the weather, and the growing conditions. The VFD
pump assembly 208 is configured to adjust a flow rate of the applicant supplied to the
applicant dispersal device 222. As a result, the applicant dispersal device 222 disperses the
applicant corresponding to a flow rate over the cultivation area (e.g., field). For example, the
amount of applicant andthe drop pattern ofthe applicant dispersed through the sprinkler head
226 corresponds to the flow rate. In an implementation, the flow rate of the applicant can be
variably (dynamically) adjusted bythe VFD pump assembly 208.
In an implementation, the VFD pump assembly 208 may be directly connected to the
connector 206. In another implementation, the VFD pump assembly 208 is disposed between
(coupled to) the second end 221 of the drop hose 220 and the applicant dispersal device 222
for dynamically (e.g., variably) controlling/adjusting the flow of applicant through the
applicant dispersal device 222. However, it is contemplated that the VFD pump assembly
208 may be located at anyposition alongthe length ofthe applicant dispersal assembly 200.
The VFD pump assembly 208 is configured to selectively/variably adjust the
volumetric flow rate of an applicant supplied to the applicant dispersal device 222 (e.g.,
amount of applicant furnished to the sprinkler 224 for dispersing through the sprinkler head
226). Thus, the pump assembly 208 is configured to pump the applicant at the selected flow
rate. In a specific implementation, as shown in the VFD pump assembly 208 is an
electrically controlled magnetic (ECM) pump assembly 300 including amagnet rotor 302 and
frequency converter 304. For example, the VFD pump assembly 208 may be similar to a
GRUNDFOS UPM2 pump assembly, or the like. The VFD pump assembly 208 is
configured to dynamically control the flow rate of the applicant and the application rate,
which may range from about zero cubic meters per hour (0 m /h) to about three and a half
cubic meters per hour (3.5 m /h). Electricity supply cables are generally installed along the
mechanized irrigation equipment of the system 100 to provide power to the VFD pump
assembly 208. In an implementation, the VFD pump assembly 208 does not exceed plus
thirty volts alternating current (+30 VAC) or plus thirty volts direct current (+30 VDC).
The VFD pump assembly 208 may also include control logic configured to control the
VFD pump assembly 208. In an implementation, the control logic is configured to control
the VFD pump assembly 208 (and the volumetric flow rate of an applicant dispersed) by
controlling the speed ofthe pump assembly 208. For example, as shown in the pump
assembly 300 includes control logic, such as a processor 306 in electronic communication
with a memory 308, and a communication module 310. The processor 306 is configured to
provide processing functionality to the VFD pump assembly 300. Thus, the processor 306
may execute one or more software programs and/or instructions described herein. The
memory 308 is an example of tangible computer-readable media that provides storage
functionality to store various data associated with the operation of the VFD pump assembly
208, such as software programs/modules and code segments mentioned herein, or other data
to instruct the processor 306 to perform the steps described herein. The communication
module 310 is configured to communicate with other components (e.g., communication
module 140) over a communication network (e.g., a wireless network, a wired network, etc.).
The communication module 310 may be representative of a variety of communication
components and functionality, including, but not limited to: one or more antennas, a
transmitter and/or receiver, atransceiver, or the like.
The VFD pump assembly 208 may be in electronic communication with the control
device 130, or other type of controller known in the art. For example, the controller may be a
programmable logic controller. As described above, the electronic communication may be
achieved through a wired or a wireless connection, combinations thereof, or the like. For
example, in an implementation, the VFD pump assembly 208 includes a receiver (e.g., a
radio receiver, or the like) to receive signals transmitted via a transmitter associated with the
control device 130 or the controller, and vice versa. The control device 130, or the controller,
is configured to transmit a signal representing various parameters corresponding to
determining or adjusting the flow rate ofthe applicant to the VFD pump assembly 208. In an
implementation, the control device 130 communicates the current position of the irrigation
system 100 in the field. In another implementation, the control device 130 directly
communicates the desired flow rate to one or more VFD pump assemblies 208. This direct
communication may bemade at predetermined time intervals.
An implementation of the present disclosure may include a VFD pump assembly 208
coupled to every conduit (e.g., U-pipe with drop hose and sprinkler assembly) along the
irrigation system 100 (excluding the end gun 128). In another implementation, an operator
could include the VFD pump assembly 208 only on specific conduits in combination with
other conduits having no variable flow rate capability.
In use, an operator first generates a water application map using a computing device,
such as a desktop computer, a laptop computer, a tablet computer, or the like, utilizing a
water application mapping program. In an implementation, the water application mapping
program (e.g., module) may be stored in the memory 134 of the control device 130 and
executable by the processor 136. In another implementation, the water application mapping
program may be stored in memory 308 and executable by the processor 306 of the EMC
pump assembly 300. When executed by the processor 136 (or processor 306), a water
application map generally furnishes data/parameters indicating the desired water application
in a particular cultivation area (e.g., field). In an implementation, the desired water
application map may be pre-programmed in a lookup table configuration, or the like. The
VFD pump assembly 208 may be pre-programmed with information including, but not
limited to: the location of the VFD pump assembly 208 with respect to the irrigation system
100 (e.g., which U-pipe 202 the pump assembly 208 is disposed on with respect to the center
pivot structure 102, etc.) and the water application map. In an implementation, the VFD
pump assembly 208 is pre-programmed with a water application map unique to pump
assembly 208. For each VFD pump assembly 208, the water application map may include
the pre-determined flow rate corresponding to a rotational position of the irrigation system
100 with respect to the center pivot structure 102. In other implementations, the referenced
position may be based on a linear position of the irrigation system 100 or geographic
coordinates representing a location of the irrigation system 100 within the cultivation area.
An example of a water application map with respect to the mechanized irrigation system's
100 rotational position in the field ispresented in Table 1:
Table 1
Thus, the applicant's flow may be dynamically adjusted according to the rotational position
ofthe irrigation system 100. For example, the processor 306 may be configured to adjust the
speed ofthe VFD pump assembly 208 based upon the position ofthe irrigation system 100 so
that the applicant dispersal rate from the sprinkler head 226 approximately matches the
application rate stored within the water application map. It is contemplated that the water
application map may include a distinct application rate for each VFD pump assembly 208.
For instance, each position in the water application map may include a distinct application
rate for each VFD pump assembly 208. Thus, at each position, the application rate may
differ for one or more VFD pump assemblies 208.
Once the irrigation system 100 commences an irrigation program, the position of the
irrigation system 100 can be monitored. The position of the irrigation system 100 can be
determined using any method known in the art including, but not limited to: measuring the
rotation about the center pivot structure 102 using a rotational encoder (e.g., rotational
position sensor 142), measuring the coordinates of the irrigation system utilizing GPS
techniques (e.g., utilizing the position sensor 132) and then calculating the rotational
translation, or any other suitable positioning techniques. In an implementation, the control
device 130 receives the signals representing data corresponding to the irrigation system's 100
position from the position sensor 132 and then calculates the mechanized irrigation system's
position using suitable positioning measurement techniques. Next, the control device 130
transmits a signal representing data corresponding to the position ofthe irrigation system 100
to each individual miniature VFD pump assembly 208. The field position of the irrigation
system 100 may be sent to the VFD pump assembly 208 at pre-determined time intervals. In
another implementation, a GPS receiver is mounted on the irrigation system 100 near a
controller that is configured to receive the GPS position. The controller is configured to
convert the GPS position into a machine position or an angle of the system 100 with respect
to the center pivot structure 102 according to known methods. The controller is configured to
transmit a signal representing the machine position (or the angle) to the VFD pump assembly
208. This implementation can be used if the mechanized irrigation system does not include
the control panel.
The VFD pump assembly 208 is then configured to adjust the flow rate of the
applicant to correspond to the position ofthe irrigation system 100 in the field. For example,
the position of the system 100 is transmitted to the VFD pump assembly 208 and the
processor 306 compares the approximate position of the irrigation system 100 to the position
stored within the lookup table to determine the corresponding applicant application rate (see
Table 1). The processor 306 then causes the VFD pump assembly 208 to adjust the speed of
the pump assembly to provide the pre-determined flow rate for that field position. However,
it is contemplated that in another implementation that the control device 130 may also store
the water application map within the processor 136. Thus, the control device 130 may be
configured to determine the flow rate by comparing the field position of the irrigation system
100 with the machine position stored in the water application map. A signal representing the
desired flow rate (e.g., the application rate stored in the water application map corresponding
to the machine position) is then transmitted by the control device 130 to the respective VFD
pump assembly 208. Based upon the signal, the processor 306 causes the speed of the VFD
pump assembly 208 so that the VFD pump assembly 208 pumps at about the desired flow
rate so the amount of applicant dispersed is approximately equal to the application rate stored
in the water application map.
The utilization of secondary fluid displacement devices (VFD pump assemblies 208)
allows the main fluid displacement device 105 to furnish the applicant tothe irrigation system
100 (e.g., furnish applicant to the conduits 120, 122) at a lower pressure, which may decrease
the overall power consumption associated with the irrigation system 100. For example, the
main fluid displacement device 105 may furnish applicant at pressures as low as about five
pounds per square inch (5 psi) as compared to irrigation systems having no secondary fluid
displacement devices, which displaces applicant at a pressure ranging from about thirty
pounds per square inch (30 psi) to about sixty pounds per square inch (60 psi). Thus, the
main fluid displacement device 105 may furnish applicant at pressures of about five pounds
per square inch (5 psi) to about ten pounds per square inch (10 psi). However, this range is
provided for example purposes only, and is not meant to be restrictive of the present
disclosure. Thus, a main fluid displacement device 105 may furnish applicant at other
pressures.
Additionally, each VFD pump assembly 208 may be independently operable with
regards to the other VFD pump assemblies 208. For example, a first VFD pump assembly
208 may furnish an applicant to the respective applicant dispersal device 222 at a first flow
rate while a second VFD pump assembly 208 furnishes the applicant to the respective
applicant dispersal device 222 at a second flow rate (where the first flow rate is different than
the second flow rate). It is also contemplated that the spray pattern at the sprinkler head 226
may not be modified due to the VFD pump assembly 208 (as compared to sprinklers that are
coupled tovariable controlled valves).
Example Methods
is a flow diagram illustrating an example method 400 for selectively adjusting
a flow rate of an applicant through an applicant dispersal assembly 200 of a self-propelled
irrigation system 100 in accordance with example implementations of the present disclosure.
As shown in a position associated with an applicant dispersal assembly is determined
(Block 402). In an implementation, the rotational (or angular) position of the irrigation
system 100 is determined (rotational position ofthe spans 106 with respect to the center pivot
structure 102) utilizing the position sensor 132. For example, the position sensor 132 is
mounted proximate to an end tower structure 112. At predetermined intervals, the position
sensor 132 is configured to transmit signals representing the approximate position of the end
tower structure 112. The control device 130 may utilize suitable positioning determining
techniques to determine the angular or rotational position of the span 106 with respect to the
center pivot structure 102. In another implementation, the rotational position ofthe irrigation
system 100 (rotational position of the span 106 with respect to the center pivot structure 102)
may be determined by receiving a signal representing a rotational or angular position of the
irrigation system 100 from a rotational position sensor 142 mounted at the center pivot
structure 102.
A desired flow rate (e.g., dispersal rate) associated with the position is determined
(Block 404). In an implementation, the control device 130 compares the position determined
in Block 402 with the positions stored in the water application map to approximately match
the determined position with the water application map position to determine the
corresponding application rate stored within the water application map. As described above,
each individual applicant dispersal assembly 200 (e.g., each VFD pump assembly 208) may
have a distinct application rate associated with it (an applicant rate stored within the water
application map. However, it is understood that the application rate may be uniform for each
applicant dispersal assembly 200. In an implementation, the control device 130 may utilize a
lookup table to compare the determined position to the position within the lookup table to
determine the corresponding stored application rate for the applicant dispersal assembly 200.
Based upon the application rate, the control device 130 is configured to generate a signal
representing the desired applicant flow rate, which istransmitted to the respective VFD pump
assembly 208.
As shown in the control device transmits a signal representing the desired
applicant flow rate to the applicant dispersal assembly for instructing the pump assembly to
pump at the desired flow rate (Block 406). In an implementation, the control device 130
transmits the desired flow rate to the VFD pump assembly 208 to instruct the pump assembly
208 to pump at the desired flow rate. As described above, the pump assembly 208 is
configured to pump the applicant and to selectively adjust the flow rate ofthe applicant. The
applicant is then furnished to an applicant dispersal device 222 (e.g., sprinkler 224) for
dispersal over the cultivation area. In an implementation, each pump assembly 208 may have
a flow rate that corresponds to the position ofthe irrigation system 100.
is another flow diagram illustrating an example method 500 for selectively
adjusting a flow rate of an applicant through an applicant dispersal assembly 200 of a self-
propelled irrigation system 100 in accordance with another example implementation of the
present disclosure. As shown in a signal representing a position associated with an
applicant dispersal assembly is received (Block 502) at the applicant dispersal assembly. In
an implementation, as described above, the rotational (or angular) position of the irrigation
system 100 may determined (rotational position of the spans 106 with respect to the center
pivot structure 102) utilizing the position sensor 132, which is mounted proximate to an end
tower structure 112. At predetermined intervals, the position sensor 132 is configured to
transmit signals representing the approximate position of the end tower structure 112. The
control device 130 may utilize suitable positioning determining techniques to determine the
angular or rotational position of the span 106 with respect to the center pivot structure 102.
In another implementation, the rotational position of the irrigation system 100 (rotational
position ofthe span 106 with respect to the center pivot structure 102) may be determined by
receiving a signal representing a rotational or angular position of the irrigation system 100
from a rotational position sensor 142 mounted at the center pivot structure 102. In other
implementations, the control device 130 may be mounted at the end tower structure 112. In
this implementation, the control device 130 may be configured to determine the rotational
position ofthe span 106 with respect to the center pivot structure 102 (e.g., the control device
130 functions as a GPS sensor). While rotational positions of the irrigation system 100 are
described above, it is contemplated that the position of the irrigation system may be
determined in other suitable positioning techniques. For example, a geographic position of
the irrigation system may be utilized to determine the position of the irrigation system (e.g.,
using GPS techniques to determine a geographic location ofthe irrigation system).
A desired flow rate (e.g., dispersal rate) associated with the position is determined
(Block 504). As described above, the water application mapping module may be stored in
memory 308 and executable the processor 306. In an implementation, the processor 306
compares the position determined in Block 502 with the positions stored in the water
application map to approximately match the determined position with the water application
map position to determine the corresponding application rate stored within the water
application map. In an implementation, the processor 306 utilizes a lookup table to compare
the geographic position to the position stored within the lookup table to determine the
corresponding stored application rate forthe applicant dispersal assembly 200.
The processor causes the pump assembly to adjust an applicant flow rate (Block 506)
based upon the application rate stored in the water application map (e.g., processor causes the
pump assembly to pump at a desired flow rate). Based upon the determined application rate
in the lookup table, the processor 306 causes VFD pump assembly 208 to adjust the speed of
the VFD pump assembly 208 based upon the position of the irrigation system 100 and/or the
position of the respective applicant dispersal assembly 200. The applicant is then furnished
to an applicant dispersal device 222 (e.g., sprinkler 224) for dispersal over the cultivation
area at about the application rate.
As described above, the irrigation system 100 may be coupled or include a main fluid
displacement device 105 configured to displace applicant from the fluid source to the
conduits 120, 122 to furnish to the applicant dispersal assembly 200 (and the end gun 128).
The VFD pump assemblies 208 are configured to function as secondary fluid displacement
devices. Thus, the main fluid displacement device 105 may furnish the applicant to the
irrigation system 100 at lower pressures as compared to irrigation systems not having the
VFD pump assemblies 208. For example, the main fluid displacement device 105 may
furnish applicant at pressures as low as about five pounds per square inch (5 psi) as compared
to irrigation systems having no secondary fluid displacement devices, which displaces
applicant at a pressure ranging from about thirty pounds per square inch (30 psi) to about
sixty pounds per square inch (60 psi). Thus, the main fluid displacement device 105 may
furnish applicant at pressures of about fivepounds per square inch (5 psi) to aboutten pounds
per square inch (10 psi).
Conclusion
Although the subject matter has been described in language specific to structural
features and/or process operations, it isto beunderstood that the subject matter defined in the
appended claims is not necessarily limited to the specific features or acts described above.
Rather, the specific features and acts described above are disclosed as example forms of
implementing the claims.
Claims (8)
1. An applicant dispersal assembly for irrigating a chosen field, the assembly comprising: a main water conduit; a plurality of drop hoses extending from the water conduit, wherein the plurality of drop hoses are comprised of a plurality of sprinkler heads connected to the ends of the plurality of drop hoses; wherein each drop hose is connected to a pump assembly, wherein each pump assembly is positioned between each sprinkler head and the supply conduit; wherein the pump assembly comprises a transceiver element which is configured to receive instructions regarding the applicant dispersal rate for the pump assembly; a control element, wherein the control element is configured to monitor the operating conditions of the dispersal assembly; wherein the operating conditions comprise the ground speed of the assembly, the field position of the assembly and an applicant depth parameter; wherein the control element is further configured to receive and store a water application map for the chosen field to be irrigated; wherein, the water application map is generated at a remote location and received at the control element via a wireless transmission; further wherein the control device compares the determined field position of the assembly with the data from the water application map; and further wherein the control element is further configured to dynamically adjust the disbursement rate of each drop hose based on data from the water application map and at least in part on the ground speed of the assembly, the field position of the assembly and an applicant depth parameter.
2. The applicant dispersal assembly as recited in claim 1, wherein the pump assembly comprises a variable-frequency pump assembly.
3. The applicant dispersal assembly as recited in claim 2, wherein the variable-frequency pump assembly comprises an electrically controlled magnetic pump that includes a magnet rotor and a frequency convertor.
4. The applicant dispersal assembly as recited in claim 1, wherein the pump assembly is configured to selectively adjust a flow rate of the applicant based upon a position associated with the pump assembly.
5. The applicant dispersal assembly as recited in claim 1, wherein the flow rate of the applicant is based upon a pre-determined flow rate corresponding to a rotational position associated with the pump assembly.
6. The applicant dispersal assembly as recited in claim 1, wherein the pump assembly is configured to selectively adjust the flow rate of the applicant between about zero cubic meters per hour (0 m /h) to about three and a half cubic meters per hour (3.5 m /h).
7. The applicant dispersal assembly as recited in claim 1, further comprising an applicant supply conduit having a first end and a second end, wherein the applicant supply conduit is coupled to the irrigation conduit at the first end, and wherein the applicant supply conduit is coupled to the pump assembly at the second end.
8. An applicant dispersal assembly substantially as described herein and as shown in any of the accompanying drawings.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201161468640P | 2011-03-29 | 2011-03-29 | |
US61/468,640 | 2011-03-29 | ||
PCT/US2012/030538 WO2012135105A2 (en) | 2011-03-29 | 2012-03-26 | Irrigation system having an applicant dispersal assembly |
Publications (2)
Publication Number | Publication Date |
---|---|
NZ616251A NZ616251A (en) | 2016-01-29 |
NZ616251B2 true NZ616251B2 (en) | 2016-05-03 |
Family
ID=
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