Method for applying spray liquid by a field sprayer after passing through a headland

Abstract

Method for applying spray liquid from a field sprayer (1) after passing through a headland, in which - a pump (10) for generating a volume flow of spray liquid to be applied from a tank (7) of the field sprayer (1) to spray nozzles (6) of a distribution device (3) of the field sprayer (1) and / or back into the tank (7), - a first valve (18) to partially or completely direct spray fluid from the pump (10) in a circuit between the first valve (18) and the pump (10), and - a second valve (8A) to prevent or partially or completely allow the flow of spray fluid supplied to the spray nozzles (6) from the spray nozzles (6) into the tank (7), is controlled, the procedure includes the following steps: - on a field section where spray liquid is to be applied, application of a definable, target volume flow of spray liquid through spray nozzles (6) of a distribution device (3) of the field sprayer (1), - on the headland where the application of spray liquid is to be prevented, interrupting the target volume flow of the spray liquid, - upon re-entry into a field section where spraying fluid is to be applied, re-application of the target volume flow of spraying fluid, - Adjusting the pump (10), the first and / or the second valve (18, 8A) such that, upon re-entry into a field section where spray liquid is to be applied, the time required to reach the target volume flow rate of spray liquid is minimized. - wherein the setting includes determining the time period required to achieve the target volume flow rate of spray liquid through spray nozzles (6) of a distribution device (3) of the field sprayer (1), - where the time interval between re-entry into a field section on which spray liquid is to be applied and reaching the target volume flow rate of spray liquid is measured, - wherein the adjustment includes controlling a delivery rate of the pump (10), a valve position or a control state of the first and / or the second valve (18, 8A) and / or the frequency for opening and closing an opening and closing device for at least one spray nozzle (6) of a distribution device (3) of the field sprayer (1) such that the time period for reaching the target volume flow of spray liquid assumes a minimum value.

Description

[0001] The invention relates to a method for applying spray liquid by a field sprayer after passing through a headland.

[0002] Furthermore, the invention relates to a computer, a computer system, or a computer network configured to execute the aforementioned method. The invention also relates to a computer program comprising instructions that, when executed by a computer, cause the computer to execute the aforementioned method.

[0003] Furthermore, the invention relates to an agricultural machine, such as a field sprayer, with a computer, a computer system or a computer network.

[0004] It is known from the prior art, for example DE 10 2022 107 504 A1, to set a pressure in the control system of, for example, a field sprayer, to which the spraying fluid is pressurized when the sprayer passes through a headland of a field. However, no spraying fluid is applied when passing through a headland; instead, the sprayer is pressurized to a specific pressure so that the application of spraying fluid can be restarted after passing through the headland.

[0005] It has proven disadvantageous that after passing through the headland, valuable area on a field section where spray liquid, e.g. from the field sprayer, is to be applied, cannot be supplied with spray liquid or can only be supplied insufficiently, especially because the liquid flow must first develop at the start of the application.

[0006] Therefore, the object of the present invention is to provide a method for applying spray liquid by a field sprayer after passing through a headland, in which, after the passage of a field sprayer through a headland, the area adjoining the headland on a field section on which spray liquid, e.g. from the field sprayer, is to be applied, is sufficiently supplied with spray liquid.

[0007] This problem is solved by the features of the independent patent claims. Further advantageous developments are the subject of the dependent claims.

[0008] A first aspect of the present invention comprises a method for applying spray liquid by a field sprayer after passing through a headland.

[0009] In this process, a pump is controlled and / or regulated to generate a volume flow of spray liquid to be applied from a tank of the field sprayer to spray nozzles of a distribution device of the field sprayer and / or back into the tank.

[0010] Furthermore, the process involves controlling a first valve to partially or completely recirculate spray fluid from the pump between the first valve and the pump. "Partially" in this context can refer to a proportion of spray fluid ranging from 0 to 100%.

[0011] In addition, a second valve is controlled in the process to prevent, or partially or completely allow, the flow of spray fluid, which is conveyed to the spray nozzles, from the spray nozzles into the tank.

[0012] The procedure comprises the following steps.

[0013] One step comprises, on a field section where spray liquid, e.g. from the field sprayer, is to be applied, the application of a determinable, target volume flow of spray liquid through spray nozzles of a distribution device of the field sprayer.

[0014] A further step involves interrupting the target volume flow of the spray liquid, e.g. from the spray nozzles, on the headland where the application of spray liquid is to be prevented.

[0015] Furthermore, as a further step, the procedure involves re-applying the target volume flow of spray liquid, e.g. from the spray nozzles, upon re-entry to a field section where spray liquid, e.g. from the field sprayer, is to be applied.

[0016] Furthermore, the method includes adjusting the pump, the first and / or second valve such that, upon re-entering a field section where spray liquid, e.g., from a field sprayer, is to be applied, the time required to reach the target flow rate of the spray liquid is minimized. This means that, by skillfully combining the pump's delivery rate and / or the position or state of the first and / or second valve and / or the frequency of an opening and closing mechanism for at least one spray nozzle of the field sprayer's distribution system, the time required to reach the target flow rate of the spray liquid, particularly a fully developed and / or stable flow rate, can be influenced. The aforementioned delivery rate, the aforementioned valve positions or states, and / or the aforementioned frequency can vary for different spray liquids.

[0017] This adjustment can involve comparing a calculated flow rate with the target flow rate for the spray liquid to be applied. Alternatively or additionally, the adjustment can involve changing the pump's delivery rate and / or changing the position or state of a valve of the first and / or second valve and / or changing the frequency for opening and closing an opening and closing device for at least one spray nozzle of a field sprayer's distribution system, so that the calculated flow rate matches the target flow rate or so that the calculated flow rate can be adjusted to the target flow rate.

[0018] According to the invention, the setting process comprises determining the time required to achieve the target volume flow rate of spray liquid through the spray nozzles of a distribution device of the field sprayer. This determination involves measuring the time between re-entering a field section where spray liquid, e.g., from the field sprayer, is to be applied, and reaching the target volume flow rate of the spray liquid.

[0019] Furthermore, the adjustment includes controlling the pump's delivery rate, a valve position or state of the first and / or second valve, and / or a frequency for opening and closing an opening and closing device for at least one spray nozzle of a distribution device of the field sprayer, such that the time required to reach the target volume flow of spray liquid is minimized.

[0020] The adjustment can be performed by artificial intelligence, such as a machine learning model or algorithm. This AI can be configured to optimize or minimize the time required to reach the target flow rate based on the pump's delivery rate, and / or the position or state of the first and / or second valve, and / or the frequency of opening and closing a control device for at least one spray nozzle of a field sprayer's distribution system. To achieve this, the AI ​​can store, modify, and / or further process the values ​​from the first and / or second flow rate and / or pressure sensor and / or the pump's delivery rate, enabling targeted optimization of the time required.

[0021] Furthermore, the method can control an opening and closing device for at least one spray nozzle of a field sprayer's distribution system, which can prevent or allow the escape of spray liquid from a spray nozzle. The opening and closing device can, for example, include a solenoid valve that opens and closes repeatedly in fractions of a second. This allows a continuous flow of spray liquid to be generated through the spray nozzles.

[0022] Furthermore, the procedure may include the following steps.

[0023] On the headland, where the application of spray liquid is to be prevented, the method may include closing the opening and closing device to prevent spray liquid from escaping the spray nozzles.

[0024] Furthermore, when re-entering a field section where spray liquid, e.g. from the field sprayer, is to be applied, the procedure may include opening the opening and closing device to allow spray liquid to escape from the spray nozzles.

[0025] When opening, the opening and closing mechanism can be operated at an adjustable frequency, such as several times per second and / or several times per minute. This allows for a continuous flow of sprayed liquid through the spray nozzles.

[0026] Furthermore, the procedure can include adjusting the opening and closing mechanism. This adjustment can be carried out in such a way that, upon re-entering a field section where spray liquid, e.g., from a field sprayer, is to be applied, the time required to reach the target flow rate of the spray liquid is minimized. The adjustment can involve modifying, varying, or changing the frequency with which the opening and closing mechanism can be opened and closed, e.g., several times per second and / or several times per minute, and / or the ratio of the durations during which the opening and closing mechanism is open or closed.

[0027] Furthermore, it may be stipulated that the procedure includes the following steps prior to hiring.

[0028] On a field section where spray liquid, e.g. from the field sprayer, is to be applied or before passing through a headland, the method can include capturing a first volume flow and / or a first pressure in front of spray nozzles of a distribution device of the field sprayer.

[0029] Alternatively or additionally, the procedure can include, on a field section where spray liquid, e.g. from the field sprayer, is to be applied or before passing through a headland, detecting a valve position or a setting state of the first valve for a first volume flow in front of spray nozzles of a distribution device of the field sprayer.

[0030] Furthermore, the procedure may include the following steps before hiring.

[0031] The procedure can thus include, on a field section where spray liquid, e.g. from the field sprayer, is to be applied or before passing through a headland, capturing a second volume flow and / or second pressure after spray nozzles of a distribution device of the field sprayer.

[0032] Alternatively or additionally, the procedure can include, on a field section where spray liquid, e.g. from the field sprayer, is to be applied or before passing through a headland, detecting a valve position or a setting state of the second valve for a second volume flow after spray nozzles of a distribution device of the field sprayer.

[0033] Furthermore, the procedure may include the following step before setting up the system. This step may involve recording the pump's delivery rate on a field section where spraying fluid, e.g., from a field sprayer, is to be applied, or before passing through a headland.

[0034] Furthermore, the adjustment can include calculating a volume flow difference from the first measured volume flow and the second measured volume flow, e.g., in the measured delivery rate of the pump, in order to obtain a calculated volume flow that is applied through the spray nozzles.

[0035] Alternatively or additionally, the adjustment can include calculating a pressure differential between the first and second measured pressures, e.g., based on the measured pump delivery rate, in order to determine the pressure loss caused by the spray nozzles. From this pressure loss and the pump delivery rate (e.g., in cubic centimeters per minute) of the spray fluid to the nozzles, the method can then calculate the volumetric flow rate applied through the nozzles.

[0036] To further explain and better understand the above statements, examples are explained below.

[0037] Thus, a closed first valve can increase the generated volume flow of the pump towards the spray nozzles, or conversely, in the closed position of the first valve, the generated volume flow of the pump towards the spray nozzles can be increased.

[0038] An open first valve can reduce, decrease, or completely stop the pump's generated flow rate towards the spray nozzles. In other words, when the first valve is open, the pump's generated flow rate towards the spray nozzles can be reduced, decreased, or completely stopped.

[0039] Alternatively or additionally, a closed second valve can reduce or completely stop the pump's generated flow rate towards the spray nozzles. Thus, when the second valve is closed, the pump's generated flow rate towards the spray nozzles can be reduced, decreased, or completely stopped.

[0040] An open second valve can also increase the pump's generated flow rate towards the spray nozzles. In other words, when the second valve is open, the pump's generated flow rate towards the spray nozzles can be increased.

[0041] The opening state and associated effect of the first and / or second valve can also be reversed within the scope of the invention.

[0042] Before entering a headland, the procedure may include recording the pumping capacity of the pump with which it delivers spray fluid.

[0043] When entering a headland, the procedure may involve reducing the pump's delivery rate to reduce the amount of spray fluid being pumped.

[0044] When entering a headland, the procedure may include, as a further step, opening the first valve to reduce the volume flow of spray fluid towards the spray nozzles.

[0045] Alternatively or additionally, when entering a headland, the procedure may include opening or closing the second valve to reduce the volume flow of spray fluid towards the spray nozzles.

[0046] When exiting the headland, the procedure can include, as a further step, increasing the pump's delivery rate to the recorded delivery rate before entering the headland, in order to increase the volume flow of spray fluid towards the spray nozzles.

[0047] The procedure may also include closing the first valve when exiting the headland to increase the volume flow of spray fluid towards the spray nozzles.

[0048] Furthermore, it is possible that when exiting the headland, the procedure includes as a further step closing or opening the second valve to increase the volume flow of spray fluid towards the spray nozzles.

[0049] A second aspect of the present invention comprises a computer, a computer system or a computer network.

[0050] It is expressly pointed out that the features of the procedure, as mentioned under the first aspect, can be applied individually or in combination to the computer, the computer system or the computer network.

[0051] A computer, a computer system, or a computer network is configured to perform the procedure according to the first aspect, either locally or non-locally.

[0052] A third aspect of the present invention comprises a computer program.

[0053] It is expressly pointed out that the features of the procedure, as mentioned under the first aspect, can be applied individually or in combination to the computer program.

[0054] A computer program comprises instructions which, when the program is executed by a computer, cause it to carry out the procedure according to the first aspect.

[0055] A fourth aspect of the present invention comprises an agricultural machine.

[0056] It is expressly pointed out that the features of the first and / or second and / or third aspect can be applied individually or in combination to the agricultural machine.

[0057] An agricultural machine, such as a field sprayer, is designed to carry out the method according to the first aspect of the invention.

[0058] Alternatively or additionally, an agricultural machine, such as a field sprayer, a computer, a computer system or a computer network, exhibits the second aspect.

[0059] Alternatively or additionally, an agricultural machine, such as a field sprayer, is designed to execute a computer program according to the third aspect of the invention.

[0060] Another aspect of the present invention comprises a field sprayer for applying spray liquid.

[0061] It is expressly pointed out that the characteristics of the first, second, third and / or fourth aspect can be used individually or in combination with each other in the field sprayer for the application of spray liquid.

[0062] A field sprayer for applying spray liquid comprises a boom with a left section and a right section and / or optionally with a middle section.

[0063] Furthermore, the field sprayer has a distribution device for distributing spraying fluid to the spray nozzles. This distribution device may have a fluid inlet and a fluid outlet.

[0064] The distribution device may also include spray nozzles for applying the spraying liquid. The spray nozzles may be connected to the fluid inlet and outlet via fluid communication. Furthermore, the spray nozzles may be attached to the boom.

[0065] Each spray nozzle can have an opening and closing device for at least one spray nozzle of a distribution system of the field sprayer, such as a solenoid valve. Each opening and closing device can also be fluid-communicating with the fluid inlet and the fluid outlet.

[0066] Furthermore, it is possible that the distribution device includes a fluid piping system that connects the fluid inlet, the fluid outlet and / or the spray nozzles to each other via fluid communication.

[0067] Furthermore, the field sprayer has a tank for spraying fluid. The fluid outlet of the distribution device can be fluid-communicating with the tank. The fluid outlet of the distribution device and the tank can be fluid-communicating with each other via a first fluid line. The tank can also include an outlet, e.g., for fluid.

[0068] In addition, the field sprayer has a pump for conveying spray liquid from the tank to the distribution device.

[0069] The pump can have a first fluid inlet that can be fluid-communicating with the tank outlet. Additionally, the pump's first fluid inlet and the tank can be fluid-communicating with each other via a second fluid line.

[0070] The pump can have a fluid outlet that can be fluid-communicating with the fluid inlet of the distribution device. The pump's fluid outlet and the distribution device's fluid inlet can be fluid-communicating with each other via a third fluid line. This third fluid line can include a first flow rate and / or pressure sensor for detecting the first flow rate and / or pressure in the third fluid line. The first flow rate and / or pressure sensor can be mounted or arranged upstream of spray nozzles. The pump can also have a second fluid inlet for a first return line.

[0071] Furthermore, the field sprayer has a first return line that can connect a second fluid inlet of the pump to the fluid outlet of the pump via fluid communication. The first return line can be connected to the third fluid line and the pump via fluid communication, for example, midway between the fluid inlet of the distribution device and the fluid outlet of the pump. In addition, the first return line can include a first valve to partially or completely allow or prevent the backflow from the third fluid line to the second fluid inlet of the pump.

[0072] The first valve can be located upstream of the first flow rate and / or pressure sensor. Opening the first valve can reduce the flow rate or initial flow rate of spray fluid towards the first flow rate and / or pressure sensor, and / or reduce the flow rate of spray fluid through spray nozzles. Closing the first valve can increase the flow rate or initial flow rate of spray fluid towards the first flow rate and / or pressure sensor, and / or increase the flow rate of spray fluid through spray nozzles. The first valve can be controlled by an actuator.

[0073] Furthermore, the first fluid line can include a second valve to partially or completely allow or prevent backflow from the fluid line system and / or the third fluid line to the tank. The second valve can be controlled by an actuator.

[0074] The first fluid line may have a second flow and / or pressure sensor for detecting the second flow rate and / or pressure in the first fluid line. The second flow and / or pressure sensor may be installed or arranged downstream of the spray nozzles.

[0075] The second valve can be installed downstream of the second flow rate and / or pressure sensor. Opening the second valve can increase the flow rate of the spraying fluid and / or decrease the flow rate of the spraying fluid through the spray nozzles. Closing the second valve can decrease the flow rate of the spraying fluid and / or increase or decrease the flow rate of the spraying fluid through the spray nozzles. The pressure on the spraying fluid can also be increased by closing the second valve.

[0076] Furthermore, the field sprayer has a second return line that connects the first fluid line to the third fluid line via a fluid-communication system. The second return line may include a check valve that allows excess pressure from the third fluid line to escape through the first fluid line into the tank, e.g., without any further intermediate component such as a valve or shut-off device.

[0077] Furthermore, the field sprayer has a control system that sets the position or state of the first valve and / or the position or state of the second valve and / or the pump's delivery rate for the target flow rate through the spray nozzles and / or regulates it based on one or more sensors, such as a first and / or second flow rate and / or pressure sensor. The control system can regulate the pump and / or the first valve and / or the second valve based on measured values ​​from the first and / or second flow rate and / or pressure sensor and / or based on the pump's delivery rate. The control system can be configured and designed to operate based on the pump's delivery rate and / or a valve position or state.Based on the position of the first and / or second valve and / or depending on measured values ​​from the first and / or second volume flow and / or pressure sensor, a target volume flow is regulated or set within a very short time after passing through a headland.

[0078] Finally, it should be noted that the first fluid line and the third fluid line can have the same cross-section or the same inner and / or outer diameter.

[0079] The invention is explained in more detail below with reference to an exemplary embodiment in conjunction with an accompanying drawing. The drawing schematically shows: Fig. 1 A schematic view of a field sprayer.

[0080] Fig. Figure 1 shows a schematic view of a field sprayer. Figure 1 shows a more detailed representation. Fig. 1 a field sprayer 1 for applying spray liquid.

[0081] The field sprayer 1 has a boom 2 with a left boom section 2A, a right boom section 2B and a middle boom section 2C.

[0082] Furthermore, the field sprayer 1 has a distribution device 3 for distributing spray liquid to spray nozzles 6. The distribution device 3 has a fluid inlet 4 and a fluid outlet 5 as well as spray nozzles 6 for applying spray liquid.

[0083] The spray nozzles 6 are fluid-communicating with the fluid inlet 4 and the fluid outlet 5 and are attached to the boom 2. Each spray nozzle 6 has an opening and closing device, such as a solenoid valve. Furthermore, each opening and closing device is fluid-communicating with the fluid inlet 4 and the fluid outlet 5.

[0084] Furthermore, the distribution device 3 has a fluid piping system 3A that connects the fluid inlet 4, the fluid outlet 5 and the spray nozzles 6 to each other in a fluid communication manner.

[0085] Furthermore, the field sprayer 1 has a tank 7 for spraying fluid. The fluid outlet 5 of the distribution device 3 and the tank 7 are connected to each other via a first fluid line 8.

[0086] According to Fig. 1 The tank 7 has an outlet 9, and the field sprayer 1 further comprises a pump 10 for conveying spray liquid from the tank 7 to the distribution device 3.

[0087] The pump 10 has a first fluid inlet 11 which is fluidly connected to the outlet 9 of the tank 7, wherein the first fluid inlet 11 of the pump 10 and the tank 7 are fluidly connected to each other via a second fluid line 12.

[0088] Furthermore, the pump 10 has a fluid outlet 13 which is fluidly connected to the fluid inlet 4 of the distribution device 3. The fluid outlet 13 of the pump 10 and the fluid inlet 4 of the distribution device 3 are fluidly connected to each other via a third fluid line 14.

[0089] Furthermore, according to Fig. 1 the third fluid line 14 a first volume flow and / or pressure sensor 15 for detecting the first volume flow and / or the first pressure in the third fluid line 14. The first volume flow and / or pressure sensor 15 is located upstream of the spray nozzles 6.

[0090] As in Fig. As shown in Figure 1, the pump 10 has a second fluid inlet 16 for a first return line 17. The field sprayer 1 therefore has a first return line 17 that connects a second fluid inlet 16 of the pump 10 to the fluid outlet 13 of the pump 10 in a fluid-communicating manner.

[0091] The first return line 17 is, e.g., centrally located between fluid inlet 4 of the distribution device 3 and fluid outlet 13 of the pump 10, connected to the third fluid line 14 and to the pump 10 in a fluid-communicating manner.

[0092] Furthermore, the first return line 17 includes a first valve 18 to partially or completely allow or prevent the return flow from the third fluid line 14 to the second fluid inlet 16 of the pump 10. The first valve 18 is controllable by means of an actuator.

[0093] The first valve 18 is located upstream of the first flow rate and / or pressure sensor 15. Opening the first valve 18 reduces the flow rate or initial flow rate of spray fluid towards the first flow rate and / or pressure sensor 15 and / or reduces the flow rate of spray fluid through the spray nozzles. Closing the first valve 18 increases the flow rate or initial flow rate of spray fluid towards the first flow rate and / or pressure sensor 15 and / or increases the flow rate of spray fluid through the spray nozzles.

[0094] Furthermore, it shows Fig. 1. The first fluid line 8 includes a second valve 8A to partially or completely allow or prevent backflow from the fluid line system 3A and / or the third fluid line 14 to the tank 7. The second valve 8A is controllable by means of an actuator.

[0095] According to Fig. 1 the first fluid line 8 a second volume flow and / or pressure sensor 19 for detecting the volume flow and / or pressure in the first fluid line 8, wherein the second volume flow and / or pressure sensor 19 is located downstream of the spray nozzles 6.

[0096] Furthermore, the second valve 8A is located downstream of the second flow rate and / or pressure sensor 19. Opening the second valve 8A increases the flow rate of the spraying liquid and / or decreases the flow rate of the spraying liquid through the spray nozzles 6. Closing the second valve 8A decreases the flow rate of the spraying liquid and / or increases or decreases the flow rate of the spraying liquid through the spray nozzles 6. The pressure on the spraying liquid can also be increased by closing the second valve 8A.

[0097] According to Fig. 1 The field sprayer 1 has a second return line 20 which connects the first fluid line 8 with the third fluid line 14 in a fluid-communicating manner.

[0098] The second return line 20 includes a check valve 21, which can allow excess pressure from the third fluid line 14 to escape via the first fluid line 8 into the tank 7, e.g. without any further intermediate element such as a valve or shut-off device.

[0099] Furthermore, the field sprayer 1 has a control unit (not shown) that sets a valve position or state of the first valve 18 and / or a valve position or state of the second valve 8A and / or the delivery rate of the pump 10 for the target volume flow through the spray nozzles 6 and / or regulates it depending on one or more of the aforementioned sensors, such as the first and / or second volume flow and / or pressure sensor 15, 19. In other words, the control unit regulates the pump 10 and / or the first valve 18 and / or the second valve 8A depending on measured values ​​from the first and / or second volume flow and / or pressure sensor 15, 19 and / or depending on the delivery rate of the pump 10. The control unit is designed and configured such that it can adjust the pump 10 and / or the first valve 18 and / or the second valve 8A depending on the delivery rate of the pump 10 and / or a valve position or state.a setpoint flow of the first and / or second valve 18, 8A and / or depending on measured values ​​of the first and / or second volume flow and / or pressure sensor 15, 19 is regulated within a very short time after passing through a headland.

[0100] Finally, it should be noted that the first fluid line 8 and the third fluid line have the same cross-section or the same inner and / or outer diameter.

[0101] The following describes a method for applying spray liquid using the presented field sprayer 1 after passing through a headland. It is noted that a field sprayer other than the one described in this document can also be used. Fig. 1 can be used.

[0102] In this process, the pump 10 is controlled to generate a volume flow of spray liquid to be applied from the tank 7 of the field sprayer 1 to spray nozzles 6 of the distribution device 3 of the field sprayer 1 and / or back into the tank 7.

[0103] In addition, the first valve 18 is controlled in the process to partially or completely circulate spray fluid from the pump 10 in a loop between the first valve 18 and the pump 10.

[0104] Furthermore, in this process the second valve 8A is controlled to prevent or partially or completely allow the flow of spray fluid, which is conveyed to the spray nozzles 6, from the spray nozzles 6 into the tank 7.

[0105] In addition, the method controls an opening and closing device (not shown), such as a solenoid valve, for at least one spray nozzle 6 of the distribution device 3, with which the escape of spray liquid from a spray nozzle 6 can be prevented or permitted.

[0106] The procedure generally includes the following steps.

[0107] On a field section where spray liquid is to be applied by the field sprayer 1, a determinable, target volume flow of spray liquid is applied through the spray nozzles 6.

[0108] On the headland, where the application of spray liquid is to be prevented, the target volume flow of spray liquid is interrupted and the opening and closing device is closed in order to prevent spray liquid from escaping from the spray nozzles 6.

[0109] Furthermore, upon re-entering a field section where spray solution is to be applied by the field sprayer 1, the target volume flow of spray solution is applied again, and the opening and closing device is opened to allow spray solution to exit the spray nozzles 6. During opening, the device is opened and closed at an adjustable frequency, such as several times per second and / or several times per minute, and / or with an adjustable ratio of the durations during which the device is open and closed. This ensures a consistent volume flow through the spray nozzles.

[0110] The pump 10, the first and / or second valve 18, 8A, and the opening and closing device are adjusted such that, upon re-entering a field section where spray liquid is to be applied by the field sprayer 1, the time required to reach the target flow rate of the spray liquid is minimized. This means that by carefully adjusting the pump 10's delivery rate and / or the position or state of the first and / or second valve 18, 8A and / or the frequency of an opening and closing device for at least one spray nozzle 6, the time required to reach the target flow rate of the spray liquid can be influenced.

[0111] Before setting, the procedure includes, as a further step, on a field section where spray liquid is to be applied or before passing through a headland, a detection of a first volume flow in front of the spray nozzles 6 and a detection of a valve position or a control state of the first valve 18 for a first volume flow in front of the spray nozzles 6.

[0112] Furthermore, before setting up, on a field section where spray liquid is to be applied by the field sprayer 1 or before passing through a headland, a second volume flow after the spray nozzles 6 as well as a valve position or a control state of the second valve 8A for a second volume flow after the spray nozzles 6 are recorded.

[0113] Furthermore, prior to setting up, as a further procedural step, a measurement of the delivery rate of pump 10 is carried out on a field section where spray liquid is to be applied by the field sprayer 1 or before passing through a headland.

[0114] The aforementioned adjustment also includes comparing a calculated flow rate with the target flow rate for the spray liquid to be applied. More precisely, the adjustment involves changing the delivery rate of pump 10 and / or changing the valve position or state of the first and / or second valve 18, 8A and / or changing the frequency for opening and closing the opening and closing device, so that the calculated flow rate matches the target flow rate.

[0115] The adjustment also includes determining the time required to reach the target volume flow rate of spray liquid through the spray nozzles 6. This determination involves measuring the time between re-entering a field section where spray liquid is to be applied by the field sprayer 1 and reaching the target volume flow rate of spray liquid.

[0116] Furthermore, the adjustment includes controlling the delivery rate of the pump 10, the valve position or the actuation state of the first and / or the second valve 18, 8A and / or the frequency for opening and closing the opening and closing device in such a way that the time period for reaching the target volume flow of spray liquid assumes a minimum value.

[0117] The adjustment process is performed by an artificial intelligence, such as a machine learning model or algorithm. This AI is configured to optimize or minimize the time required to reach the target flow rate based on the pump's delivery rate (PDR) 10, and / or the valve position or state of the first and / or second valve 18, 8A, and / or the frequency of the opening and closing of the valve mechanism. To achieve this, the AI ​​can store, modify, and / or further process the values ​​from the first and / or second flow rate and / or pressure sensor 15, 19, and / or the pump's delivery rate (PDR) 10, enabling targeted optimization of the time required.

[0118] It should also be noted that a computer, a computer system, or a computer network can be configured to execute the procedure described above, either locally or remotely. Similarly, a computer program can include instructions that, when executed by a computer, cause it to perform the procedure described above.

[0119] Naturally, an agricultural machine 1, such as a field sprayer, can also be equipped to perform the procedure described above. Likewise, an agricultural machine 1, such as a field sprayer, can have a computer, a computer system, or a computer network, as mentioned, or be equipped to execute a computer program, as mentioned. Reference symbol list 1 field sprayer / agricultural machine 2 poles 2A left linkage 2B right-hand linkage 2C medium section linkage 3 Distribution device 3A Fluid Piping System 4 Fluid inlet 5 Fluid outlet 6 spray nozzles 7 Tank 8 first fluid line 8A second valve 9 Exit 10 pump 11 First fluid inlet 12 second fluid line 13 Fluid outlet 14 third fluid line 15 first volume flow and / or pressure sensor 16 second fluid inlet 17 first return line 18 first valve 19 Second volume flow and / or pressure sensor 20 second return line 21 Check valve

Claims

[1] Method for applying spray liquid from a field sprayer (1) after passing through a headland, wherein - a pump (10) for generating a volume flow of spray liquid to be applied from a tank (7) of the field sprayer (1) to spray nozzles (6) of a distribution device (3) of the field sprayer (1) and / or back into the tank (7), - a first valve (18) to partially or completely direct spray fluid from the pump (10) in a circuit between the first valve (18) and the pump (10), and - a second valve (8A) to prevent or partially or completely allow the flow of spray fluid supplied to the spray nozzles (6) from the spray nozzles (6) into the tank (7), is controlled, the procedure includes the following steps: - on a field section where spray liquid is to be applied, application of a definable, target volume flow of spray liquid through spray nozzles (6) of a distribution device (3) of the field sprayer (1), - on the headland where the application of spray liquid is to be prevented, interrupting the target volume flow of the spray liquid, - upon re-entry into a field section where spraying fluid is to be applied, re-application of the target volume flow of spraying fluid, - Adjusting the pump (10), the first and / or the second valve (18, 8A) such that, upon re-entry into a field section where spray liquid is to be applied, the time required to reach the target volume flow rate of spray liquid is minimized. - wherein the setting includes determining the time period required to achieve the target volume flow rate of spray liquid through spray nozzles (6) of a distribution device (3) of the field sprayer (1), - where the time interval between re-entry into a field section on which spray liquid is to be applied and reaching the target volume flow rate of spray liquid is measured, - wherein the adjustment includes controlling a delivery rate of the pump (10), a valve position or a control state of the first and / or the second valve (18, 8A) and / or the frequency for opening and closing an opening and closing device for at least one spray nozzle (6) of a distribution device (3) of the field sprayer (1) such that the time period for reaching the target volume flow of spray liquid assumes a minimum value. [2] Method according to claim 1, - where the adjustment involves comparing a calculated volume flow rate with the target volume flow rate for the spray liquid to be applied, and / or - wherein the adjustment includes changing a delivery rate of the pump (10) and / or changing a valve position or a control state of the first and / or the second valve (18, 8A) and / or changing the frequency for opening and closing an opening and closing device for at least one spray nozzle (6) of a distribution device (3) of the field sprayer (1), so that the calculated volume flow can be adjusted to the target volume flow. [3] Method according to any of the preceding claims, - where the hiring process is carried out by an artificial intelligence, - wherein the artificial intelligence is configured to optimize or minimize the time required to achieve the target volume flow rate based on a delivery rate of the pump (10), and / or based on a valve position or control state of the first and / or the second valve (18, 8A) and / or based on a frequency for opening and closing an opening and closing device for at least one spray nozzle (6) of a distribution device (3) of the field sprayer (1). [4] Method according to any of the preceding claims, comprising the following steps before setting: - on a field section where spray liquid is to be applied or before passing through a headland, capturing a first volume flow and / or a first pressure in front of spray nozzles (6) of a distribution device (3) of the field sprayer (1), and / or - on a field section where spray liquid is to be applied or before passing through a headland, detection of a valve position or a setting state of the first valve (18) for a first volume flow in front of spray nozzles (6) of a distribution device (3) of the field sprayer (1). [5] A method according to any of the preceding claims, comprising the following steps before setting: - on a field section where spray liquid is to be applied, or before passing through a headland, capturing a second volume flow and / or second pressure after spray nozzles (6) of a distribution device (3) of the field sprayer (1), and / or - on a field section where spray liquid is to be applied, or before passing through a headland, detection of a valve position or a set state of the second valve (8A) for a second volume flow to spray nozzles (6) of a distribution device (3) of the field sprayer (1), and / or - on a field section where spray liquid is to be applied, or before passing through a headland, recording a delivery rate of the pump (10). [6] Method according to any of the preceding claims, - wherein the adjustment includes forming a volume flow difference between the first detected volume flow and the second detected volume flow in order to obtain a calculated volume flow that is applied through the spray nozzles (6), and / or - wherein the adjustment includes forming a pressure difference between the first detected pressure and the second detected pressure in order to obtain a pressure loss caused by the spray nozzles (6), - from the pressure loss and the delivery rate (ccm per min) of the pump (10), which delivers spray liquid to the spray nozzles (6), calculate a volume flow rate that is applied through the spray nozzles (6). [7] Computer, computer system or computer network configured to perform the method according to any one of claims 1 to 6, either locally or non-locally. [8] Computer program comprising instructions which, when the program is executed by a computer, cause it to execute the method according to any one of claims 1 to 6. [9] Equipping agricultural machinery: - a computer, a computer system or a computer network according to claim 7.

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