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WO2018161055A1 - Procédé et dispositif de détection de buses obstruées - Google Patents

Procédé et dispositif de détection de buses obstruées Download PDF

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Publication number
WO2018161055A1
WO2018161055A1 PCT/US2018/020798 US2018020798W WO2018161055A1 WO 2018161055 A1 WO2018161055 A1 WO 2018161055A1 US 2018020798 W US2018020798 W US 2018020798W WO 2018161055 A1 WO2018161055 A1 WO 2018161055A1
Authority
WO
WIPO (PCT)
Prior art keywords
conductor
nozzle
fluid
flow
conductors
Prior art date
Application number
PCT/US2018/020798
Other languages
English (en)
Inventor
Peter Ako LARBI
Chin Nee VONG
Original Assignee
Arkansas State University - Jonesboro
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Arkansas State University - Jonesboro filed Critical Arkansas State University - Jonesboro
Publication of WO2018161055A1 publication Critical patent/WO2018161055A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/004—Arrangements for controlling delivery; Arrangements for controlling the spray area comprising sensors for monitoring the delivery, e.g. by displaying the sensed value or generating an alarm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/085—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to flow or pressure of liquid or other fluent material to be discharged

Definitions

  • the present invention is related to agricultural systems. More specifically, the present invention is related to spray systems for agriculture.
  • the present invention detects clogs in agricultural spray systems. The system then alerts the user to the clogged nozzle and identifies the clogged nozzle to the user. The user repairs the identified nozzle to avoid losses in agrochemicals and time.
  • agrochemical liquids including but not limited to herbicides, pesticides, fungicides, crop protection agents, and fertilizers, are sprayed onto target, such as the crops or the ground.
  • Agricultural sprayers apply the agrochemicals at a specified application rate.
  • the liquid may be in the form of a solution or mixture, with a carrier liquid (such as water) being mixed with one or more active ingredients (such as a herbicide, fertilizer, fungicide and/or a pesticide).
  • the agrochemical liquid is supplied by powered pumps to simple or complex orifice nozzles that atomize the liquid stream into spray droplets.
  • Nozzles are often selected primarily on the desired range of flow rates needed for the job and secondarily on the range of liquid droplet size spectra and spray distribution patterns that the nozzles produce.
  • Agricultural sprayers may be pulled as an implement or self-propelled.
  • Such sprayers may include a tank, a pump, a boom assembly, and a plurality of nozzles carried by the boom assembly at spaced locations. Additional booms, such as wing booms with additional nozzles may be implemented on the sprayer to increase the area treated by the sprayer.
  • the spray nozzles on the boom disperse one or more liquids from a reservoir carried by the sprayer. Each nozzle connects to a conduit through which the fluid flows from the reservoir to the nozzle. Each nozzle distributes the fluid to the field in a droplet or spray mist form.
  • One or more of the nozzles can become clogged during operation.
  • the nozzles are typically optimized to reduce application overlap during the spray operation.
  • a clogged nozzle may prevent the liquid from being properly applied.
  • Citrus SprayEx An Expert System for Planning Citrus Spray Applications. Computers and Electronics in Agriculture 87:85-93.
  • Larbi, P.A. & M. Salyani Modeling Citrus Spray Application, 12th Annual Environmental Engineering Sciences Poster Symposium (Mar 2010), University of Florida, Gainesville, FL, March 25, 2010.
  • Larbi, P. A. & M. Salyani "Approximating citrus tree canopy volume", AS ABE Agricultural Equipment Technology Conference, Orlando, FL, January 10-13, 2010.
  • the known art enables clog detection that has been performed internally.
  • Nozzles may be checked to ensure that the nozzles are not clogged or worn out. However, these checks may not occur prior to every single application. Furthermore, these checks may not occur during the actual application. Clogging during application of the liquid may go unnoticed. Such clogging negatively impacts the outcome of the application.
  • the clog detection device of the present invention detects clogs in spray nozzles. These clog detection devices can attach around the nozzles to detect whether liquid is flowing from the nozzle.
  • the working principle of this nozzle clogging detection system and method is based on the electric conductivity of water.
  • Water that is not pure will conduct electricity due to the presence of ions. Almost all water sources such as tap water, sea water, and groundwater contain a certain amount of ions that cause the water to conduct electricity. Water-based agrochemicals require mixing with water as a solvent before spraying. Groundwater or tap water normally serves as the water source for such a solvent. Therefore, such an agrochemical spray solution is potentially able to conduct electricity.
  • the clog detection device system and method detects clogs due to the conductive nature of the liquid passing through the nozzle.
  • the clog detection device provides two conductors that are not connected to form an open electrical circuit.
  • the spray solution, water, or other liquid completes the open circuit.
  • the spray liquid contacts the two conductors to allow the flow of the current across the conductors and the spray liquid.
  • An indicator such as a light emitting diode (an LED), a light, a visual alert, an audio alert, an alarm, or other indicator, can be included in the circuit to indicate the presence or absence of water.
  • a water sensor such as a water sensor.
  • the clog detection device is constructed from mainly a cylindrical plastic body with the water sensor circuit (henceforth referred to as 'NCDD circuit' or 'the circuit') built into it.
  • the device's body attaches to a nozzle body at the top to become one assembly.
  • the circuit components install in cavities on the device's body with two prongs (naked metallic wires relatively more rigid than the remaining wires used in the circuit) piercing from outside of the body on opposite sides radially toward the axis of the cylindrical body.
  • the housing provides at least one fastener towards the upper portion of the housing.
  • the fasteners may include but are not limited to two bolts and nuts as support, a thumbscrew for tightening the housing at the nozzle.
  • the housing also provides a foam padding on the inner wall of the housing to surround the inner upper part of the housing to reduce the likelihood of damaging the nozzle body. Foam padding is also attached to the fasteners for cushioning.
  • the circuit includes a male connector for power source, two conductors positioned within the flow path of the spray from the nozzle's orifice at the lower portion of the body and an indicator, such as an LED (light-emitting diode) that lights up when there is spray from the nozzle.
  • an indicator such as an LED (light-emitting diode) that lights up when there is spray from the nozzle.
  • the device prototype is attached to a nozzle using the attachment as described. When the nozzle starts spraying and the spray contacts the two conductors, the LED will light. When the nozzle is clogged and/or discharging no spray, the LED remains off.
  • the prongs are collinear and separated by a small gap with their axis being perpendicular to the axis of the nozzle's orifice.
  • a small displacement between the prongs and the nozzle tip allows the developing spray (initial portion of the water exiting from the nozzle), which is conical in shape for a circular orifice and continuous, to make contact with the prongs (Fig. 1). Since the developing spray is continuous, the water closes the circuit allowing the flow of current.
  • the present also provides a system with multiple flow detection devices. To monitor each nozzle along a boom of a sprayer, multiple flow detection devices are needed. Each device attaches to a nozzle to monitor the flow of the spray from the nozzle. The number of flow detection devices required depends upon the number of nozzles to be monitored. Such a system provides a monitor and indicators that correspond to the status of each flow detection device and the nozzle monitored by the flow detection device.
  • the water is a relatively poor conductor of electricity that acts as a resistor to minimize the current that passes through the prongs. The water reduces the likelihood of a short circuit.
  • FIG. 1 is an environment view showing one embodiment of the present invention
  • FIG. 2 is a circuit view showing one embodiment of the present invention
  • FIG. 3 is a circuit view showing one embodiment of the present invention.
  • FIG. 4 is a circuit view showing one embodiment of the present invention.
  • FIG. 5 is a circuit view showing one embodiment of the present invention.
  • FIG. 6 is a circuit view showing one embodiment of the present invention.
  • FIG. 7 is a circuit view showing one embodiment of the present invention.
  • FIG. 8 is a schematic view showing one embodiment of the present invention.
  • FIG. 9 is a schematic view showing one embodiment of the present invention.
  • FIG. 10 is a schematic view showing one embodiment of the present invention.
  • FIG. 11 is a schematic view showing one embodiment of the present invention.
  • FIG. 12 is a schematic view showing one embodiment of the present invention.
  • FIG. 13 is a schematic view showing one embodiment of the present invention.
  • FIG. 14 is a top view of a monitor of one embodiment of the present invention.
  • FIG. 15 is a bottom view of a flow detection device of one embodiment of the present invention.
  • FIG. 16 is a bottom view of a flow detection device of one embodiment of the present invention. DETAILED DESCRIPTION
  • the clog detection device shown generally as 100 in FIG. 1 detects clogs in spray nozzles 102.
  • the clog detection device 100 provides housing 104 that attaches around the nozzles 102 to detect whether liquid 110 is flowing from the nozzle 102.
  • Detection bodies 105, 107 each provide at least one conductor, such as conductors 106, 108. In another embodiment, the detection bodies 105, 107 may provide multiple conductors, such as three conductors, spaced throughout the flow path of the spray from the nozzle.
  • Conductors 106, 108 such as prongs, provide an open circuit within the flow path of the spray from the nozzle.
  • the liquid 110 such as water, a water based solution, an agrochemical spray, a liquid solution, a liquid compound, or other liquid, flows through the nozzle 102.
  • the liquid 110 completes the opening 120 between conductors 106, 108 to complete the circuit.
  • the clog detection device 100 operates due to the electric conductivity of the liquid 110.
  • Water that is not pure will conduct electricity due to the presence of ions. Almost all water sources such as tap water, sea water, and groundwater contain a certain amount of ions that cause the water to conduct electricity. Water-based agrochemicals require mixing with water as a solvent before spraying. Groundwater or tap water normally serves as the water source for such a solvent. Therefore, such an agrochemical spray solution is potentially able to conduct electricity.
  • the clog detection device 100 and method detects clogs due to the conductive nature of the liquid 110 passing through the nozzle 102.
  • the clog detection device 100 provides two conductors 106, 108 extending from the housing 104 with an opening 120 to form an open electrical circuit.
  • the spray liquid 110 exiting nozzle 102 contacts the two conductors 106, 108 allowing the current to flow across the conductors 106, 108 and the spray liquid 110.
  • the clog detection device 100 is constructed from a housing 104, such as a cylindrical plastic body, with the water sensor circuit (henceforth referred to as 'NCDD circuit' or 'the circuit') built into it.
  • the housing 104 attaches to a nozzle body at the top to become one assembly.
  • the circuit components install into the housing 104 with two conductor apertures on the housing with the two conductors 106, 108, such as the two prongs (naked metallic wires relatively more rigid than the remaining wires used in the circuit) piercing from outside of the housing 104 on opposite sides radially toward the center of the housing 104.
  • the conductors 106, 108 such as the prongs, of one embodiment are collinear and separated by a small opening 120 with their axis being perpendicular to the axis of the nozzle's orifice.
  • a small opening 120 between the prongs and the nozzle tip allows the developing liquid spray 110 (initial portion of the water exiting from the nozzle), which is conical in shape for a circular orifice and continuous, to make contact with the conductors 106, 108 (Fig. 1). Since the developing liquid spray 110 is continuous, the liquid 110 closes the circuit allowing the flow of current.
  • An indicator such as a light emitting diode (an LED), a light, a visual alert, an audio alert, an alarm, or other indicator, can be included in the circuit to indicate the presence or absence of water.
  • the liquid 110 contacts the conductors 106, 108 to complete the circuit. As the liquid 110 fails to close the circuit, the clog detection system 100 detects the open circuit. The end result is a water sensor that detects the flow of liquid 110 across the opening 120 between conductors 106, 108. Contact of the two conductors 106, 108 to each other produces a short circuit that eventually damages the LED.
  • the water is a relatively poor conductor of electricity that acts as a resistor to minimize the current that passes through the prongs. The water reduces the likelihood of a short circuit.
  • the user applies the liquid through multiple nozzles.
  • the user installs a clog detection system constructed from a clog detection device placed at each nozzle.
  • a clog detection system constructed from a clog detection device placed at each nozzle.
  • Such a system requires multiple clog detection devices.
  • a clog detection device of one embodiment will be installed at each nozzle to detect sprayed liquid 110 from the nozzle.
  • the conductors 106, 108 install adjacent to each nozzle 102.
  • the installation of the conductors 106, 108 places each opening 120 in the path of liquid 110 through the respective nozzle.
  • the system monitors the flow of liquid 110 through each nozzle 102.
  • the system provides an alert system that detects flow of the liquid through each nozzle.
  • the alert system may be an audible alert, such as an alarm, a beep, or other audio signal.
  • the alert system may also be a visual alert, such as a light, LED, status update on a screen, or other visual alert.
  • Another embodiment may provide both an audible alert and a visual alert.
  • the system monitors each nozzle.
  • the alert system indicates which nozzle is clogged.
  • the user can then identify the clogged nozzle and repair the nozzle.
  • the alert system identifies the clogged nozzle so that the user can quickly locate and repair the nozzle without losing significant time.
  • NCDS Nozzle Clogging Detection System
  • FIGS. 2-13 show different embodiments of the clogged nozzle detection system 100.
  • Six NCDS circuit designs are established based on two circuit types (A and B) of three applicable configurations (1, 2, and 3) of the NCDD. The circuit designs are summarized in Table 1.
  • NCDS Nozzle clogging detection system
  • FIGS. 2 and 8 show one embodiment with a resistor in the circuit with the flow indicator 118.
  • the flow indicator 118 may be a light, an LED, a visual alert, or audible alert as indicated above.
  • Power source 112 such as a battery, solar panel, power from the agricultural equipment, or other power source, provides power to the flow indicator 118.
  • Opening 120 creates an open circuit 114.
  • the liquid flows through the housing 104, across conductors 106, 108.
  • the liquid capable of conducting electricity closes the circuit 114 as the liquid flows through opening 120.
  • the liquid closes the circuit 114 allowing electricity to flow across the flow indicator 118 to indicate that nozzle is not clogged. If the flow is not sufficient to complete the circuit at opening 120, electricity is not supplied to flow indicator 118 such that flow indicator 118 is not powered.
  • FIGS. 3 and 9 show another embodiment that includes resistor 116 and transistor 122.
  • housing 104 secures near the nozzle to place opening 120 in the flow path of the liquid from the nozzle.
  • the liquid flows into opening 120 to close circuit 114.
  • Power source 112 powers the flow indicator 118.
  • the liquid closes the circuit 114 allowing electricity to flow across the flow indicator 118 to indicate that the nozzle is not clogged. If the flow is not sufficient to complete the circuit at opening 120, electricity is not supplied to flow indicator 118 such that flow indicator 118 is not powered.
  • FIGS. 4 and 10 show another embodiment that includes resistor 116 similar to FIGS. 2 and 8.
  • housing 104 secures near the nozzle to place opening 120 in the flow path of the liquid from the nozzle.
  • the liquid flows into opening 120 to close circuit 114.
  • the liquid capable of conducting electricity closes the circuit 114 as the liquid flows through opening 120.
  • the liquid closes the circuit 114 allowing electricity to flow across the flow indicator 118 to indicate that the nozzle is not clogged. If the flow is not sufficient to complete the circuit at opening 120, electricity is not supplied to flow indicator 118 such that flow indicator 118 is not powered.
  • FIGS. 4 and 10 show a system of clog detection devices 130, 132, 134 providing multiple indicators 118 placed at different nozzles.
  • Each clog detection device 130, 132, 134 attaches in parallel with the power source 112.
  • Each detection device 130, 132, 134 signals whether sufficient liquid flows across each opening 120 between the conductors 106, 108.
  • FIGS. 5 and 11 show another embodiment that includes resistor 116 and transistor 122.
  • housing 104 secures near the nozzle to place opening 120 in the flow path of the liquid from the nozzle.
  • the liquid flows into opening 120 to close circuit 114.
  • Power source 112 powers the flow indicator 118.
  • the liquid closes the circuit 114 allowing electricity to flow across the flow indicator 118 to indicate that the nozzle is not clogged. If the flow is not sufficient to complete the circuit at opening 120, electricity is not supplied to flow indicator 118 such that flow indicator 118 is not powered.
  • FIGS. 5 and 11 show a system of clog detection devices 136, 138, 140 providing multiple indicators 118 placed at different nozzles.
  • Each clog detection device 136, 138, 140 attaches in parallel with the power source 112.
  • Each detection device 136, 138, 140 signals whether sufficient liquid flows across each opening 120 between the conductors 106, 108.
  • the power source 112 powers the alert to signal that sufficient liquid is flowing across the opening 120 to complete the circuit such that nozzle is not clogged.
  • FIGS. 6-7 and 12-13 show additional embodiments of the system.
  • Multiple flow detection devices 142, 144, 146, 148, 150, 152 install at different nozzles.
  • the flow detection devices 142, 144, 146, 148, 150, 152 connect in parallel on circuit 114.
  • These systems provide an indicator, such as indicators 118, 124, to indicate whether sufficient liquid is flowing through opening 120 to complete the circuit.
  • One flow indicator 118 such as an LED, is placed near the nozzle 102.
  • Another indicator 124 is placed on a monitor system 154 as shown in FIG. 14.
  • Such a monitor system 154 provides a switch 126 that turns the system on and off.
  • the monitor system 154 also provides a power indicator, such as a power light, pilot light, indicating that the system is turned on or off.
  • the flow detection devices are placed to locate the opening between conductors 106, 108 in the flow path of the liquid from the nozzle.
  • the indicators 118, 124 indicate whether sufficient liquid is flowing through the opening 120 at conductors 106, 108.
  • These flow detection devices 142, 144, 146, 148, 150, 152 provide the resistor.
  • Flow detection devices 148, 150, 152 provide the transistor in addition to the resistor.
  • Each flow detection device installs on a nozzle.
  • the flow detection devices detect whether the liquid flows from the nozzle to which the flow detection device is attached.
  • each flow detection device detects clogs on a single nozzle.
  • Flow indicator 118 alerts the user whether or not sufficient liquid is flowing from the nozzle to complete the circuit.
  • the indicator is a visual indicator, such as a light or LED.
  • the flow indicator 118 may be positioned on a monitor, on the housing, or within the housing.
  • FIG. 14 shows the monitor 154 with indicators, such as alert indicator 124 and power indicator 128.
  • Monitor 154 provides multiple indicators to indicate that the system is powered on and whether a clog is detected.
  • a power indicator indicates that the system is powered on.
  • Alert indicator 124 indicates that an individual nozzle is properly functioning.
  • the alert indicator 125 indicates that a nozzle is clogged and not functioning properly.
  • the monitor 154 identifies any nozzles that are not functioning properly. The user can easily identify the nozzle to be examined. The user can then locate and repair the nozzle and continue spraying.
  • FIG. 14 also shows that alert flow indicators 118, 124 are powered on to indicate no clog at detection devices attached to a particular nozzle. The nozzle is functioning properly and liquid is properly flowing.
  • the monitor may have a wired connection with the flow detection devices.
  • the monitor may also be a wireless monitor.
  • the monitor has been shown with individual lights that alert the user.
  • the system may also be implemented with a program that provides digital display with touch screen capabilities.
  • a second monitor may also be connected to allow supervision of the system.
  • FIGS. 15 and 16 show different embodiments of the nozzle detection device.
  • One embodiment provides two conductors 106, 108 that form an incomplete circuit as shown in FIG. 15.
  • the two conductors 106, 108 conduct electricity but do not contact each other.
  • the conductors are stored within housing 156.
  • the conductors 106, 108 extend radially inward towards housing aperture 158.
  • Foam 160 located within the housing cushions the nozzle to reduce damage to the nozzle.
  • FIG. 16 Another embodiment shown in FIG. 16 provides a first detection body 162 providing a set of three conductors that contact each other and a second detection body 164 providing a set of three conductors that contact each other.
  • the conductors of each detection body conduct electricity.
  • the conductors of the first detection body do not contact the conductors of the second detection body.
  • the conductors of the first detection and the conductors of the second detection body form an incomplete circuit with each other.
  • the flow of the spray fluid completes the circuit between the two detection bodies. Similarly, the flow of the spray fluid completes the circuit between the two sets of conductors.
  • the conductors are configured to detect clogs with minimum effect on the spray pattern and droplet size.
  • the alert indicators indicate whether a clog is detected.
  • the visual alert indicators alternate between a clog alert and an unclogged alert.
  • the system may use a flashing light, different colored lights, power on the indicator, or power off the indicator.
  • the system lights the indicator if a clog is detected.
  • the system lights the indicator if no clog is detected.
  • the system can be developed according to the user's preferences.
  • a sensor may be implemented as the indicator. The sensor detects whether the circuit across opening 120 is open or closed. If the circuit across opening 120 is open, a clog has been detected as insufficient liquid flows across opening 120 between conductors 106, 108.
  • the system may also provide data logging.
  • data logging can include which nozzle clogged, position at which the nozzle clogged, position at which the nozzle was repaired.
  • Such data logging allows the user to pin point the areas at which the liquid was not applied.
  • the system may also provide real-time analysis of efficiency and economic impact.
  • the clog detection system may also be implemented to automatically turn on and off with activation of the sprayer's pump.

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  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Nozzles (AREA)

Abstract

L'invention concerne un dispositif, un système et un procédé de détection d'obstruction de buses, qui détectent si un liquide s'écoule à travers une buse par le biais de la conduction d'électricité. Le détecteur d'obstruction met en place un circuit ouvert au niveau d'une ouverture entre deux conducteurs. Les deux conducteurs sont placés sur le trajet d'écoulement d'un liquide s'écoulant à partir d'une buse. Le liquide provenant de la buse conduit l'électricité. Le liquide s'écoulant à travers l'ouverture entre les conducteurs ferme le circuit. Un système d'alerte notifie à l'utilisateur le fait qu'un liquide s'écoule ou non à travers la buse. Le système détecte l'écoulement de liquide à partir de buses multiples et identifie les buses à partir desquelles s'écoule le liquide. Une interruption du circuit au niveau de l'ouverture entre les conducteurs indique que le liquide ne s'écoule pas suffisamment pour fermer le circuit.
PCT/US2018/020798 2017-03-02 2018-03-02 Procédé et dispositif de détection de buses obstruées WO2018161055A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US201715911061A 2017-03-02 2017-03-02
US201762466335P 2017-03-02 2017-03-02
US15/911,061 2017-03-02
US62/466,335 2017-03-02
US201762532880P 2017-07-14 2017-07-14
US62/532,880 2017-07-14

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WO2018161055A1 true WO2018161055A1 (fr) 2018-09-07

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989003104A1 (fr) * 1987-10-05 1989-04-06 Nordson Corporation Procede et appareil de detection d'obstructions dans des systemes distributeurs de fluides
US20060265106A1 (en) * 2005-05-23 2006-11-23 Capstan Ag Systems, Inc. Networked diagnostic and control system for dispensing apparatus
US20160000004A1 (en) * 2014-07-02 2016-01-07 Cnh Industrial America Llc Device and method for detecting blockages in an agricultural sprayer
US20160212933A1 (en) * 2013-08-26 2016-07-28 Hugo Vogelsang Maschnienbau Gmbh Apparatus for distributing a mixed fluid and apparatus for distributing bulk material

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989003104A1 (fr) * 1987-10-05 1989-04-06 Nordson Corporation Procede et appareil de detection d'obstructions dans des systemes distributeurs de fluides
US20060265106A1 (en) * 2005-05-23 2006-11-23 Capstan Ag Systems, Inc. Networked diagnostic and control system for dispensing apparatus
US20160212933A1 (en) * 2013-08-26 2016-07-28 Hugo Vogelsang Maschnienbau Gmbh Apparatus for distributing a mixed fluid and apparatus for distributing bulk material
US20160000004A1 (en) * 2014-07-02 2016-01-07 Cnh Industrial America Llc Device and method for detecting blockages in an agricultural sprayer

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