JP2006034251A - Liquid spray system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid spray system accurately controlling spraying amount of liquid such as agrochemical, fertilizer, and carrying out easy and effective maintenance after spraying. <P>SOLUTION: This invention comprises to the agrochemical spray system 1 comprising a water level sensor 12 inserted into a tank 3, a flow meter 15 measuring the flow of the agrochemical 8 pumped out from a pump 4, a counting terminal 13 linked to the flow meter 15 and the water level sensor 12, a mobile terminal 14 linked with the counting terminal through wireless communication and a valve 16 controlled so as to be closed through the mobile terminal 14, in addition to the tank 3 for storing the agrochemical 8, the pump 4, a hose 6 and a spray 5. The agrochemical is sprayed out from the sprayer 5 by opening the valve 16 by an operator 10. The counting terminal 13 which constitutes the controlling means, regulates the valve 16 to be closed through the mobile terminal 14 by detecting the flow measured by the flow meter 15 reaching a predetermined amount and enables an accurate spray of the agrochemical. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a liquid spraying system, and more particularly to a liquid spraying system for spraying liquids such as agricultural chemicals and fertilizers.

  FIG. 15 is a block diagram showing an outline of a conventional method for spraying agricultural chemicals.

  Referring to the figure, a spraying device 51 is used when spraying agricultural chemicals and fertilizers in agriculture.

  The spraying device 51 is connected to a tank 3, a pump 4 attached to the tank 3, a hose 6 having one end connected to the pump 4, and the other end of the hose 6 via a manual valve 52. And the nebulizer 5. Although the size of the tank 3 is various, it has a volume capable of storing, for example, about 1000 liters of liquid, and is normally used in a state where it is mounted on the loading platform of the light truck 7 as shown in the figure. . The hose 6 has a length of about 200 m, for example, and can continue the spraying operation while moving on foot with the sprayer 5 without moving the tank 3.

  Here, the usage method of such a spraying apparatus 51 is demonstrated as an example in the case of pesticide spraying in an orchard.

  The worker 10 loads the spraying device 51 on the light truck 7 and moves to the orchard, and then starts preparatory work for spraying. First, the type of the fruit tree 9 to be sprayed, the type of pests, etc. The predetermined chemical | medical agent according to corresponding is diluted, and the agrochemical 8 is prepared in the tank 3 inside. At this time, the concentration of the drug is determined according to the type of cultivated crop, the drug, etc., and is diluted so as to be a prescribed concentration. As a specific preparation method, for example, a powder or liquid medicine having a predetermined weight is placed in the tank 3, and water having a weight corresponding to the dilution ratio is added to the tank 3. Thereafter, the operator 10 starts the pump 4 in order to make the spraying device 51 usable. At this time, since the tank 3 and the pump 4 are configured to circulate the liquid inside the tank 3 in a state where the valve 52 is closed, the pesticide 8 prepared in the tank 3 is agitated and uniform. It becomes a state. Furthermore, the worker 10 wears full protective clothing to prevent inhalation of the agricultural chemical and adhesion to the body during the spraying work, and the preparatory work for spraying is completed.

  When the preparatory work is completed, the operator 10 picks up the sprayer 5, leaves the tank 3, and moves to the fruit tree 9 to which the agricultural chemical 8 is to be sprayed. When the operator 10 opens the manual valve 52 attached to the hand of the sprayer 5 after arriving at the target fruit tree 9, the pesticide 8 stored in the tank 3 by the power of the pump 4 passes through the hose 6. Erupts from 5. The worker 10 sprays the pesticide 8 so that the pesticide 8 can be distributed evenly to the necessary parts of the fruit tree 9 while appropriately moving around the fruit tree 9. And if the operator 10 judges that the suitable spraying quantity was sprayed on the fruit tree 9, he will close the manual valve 52 at hand and will stop the spraying of the agricultural chemical 8 from the sprayer 5. FIG.

  When the spraying to the first fruit tree 9 is completed, the worker 10 moves to the adjacent fruit tree on foot and sprays the pesticide 8 by the same procedure. Thereafter, the worker 10 repeats movement and spraying, finally sprays the pesticide 8 on all fruit trees that need to be sprayed, and ends the spraying work.

  Furthermore, after the completion of the spraying work, the worker 10 farms information such as the name of the worker, the field where the spraying was performed, the medicine used, the concentration and the amount actually sprayed in order to manage the spraying results of the agricultural chemicals. Work to record in a diary or input to a personal computer.

  In addition, although the spraying work of the pesticide in the orchard has been described here as an example, the same applies to the case where the pesticide is sprayed on other crops grown in the field or the fertilizer is sprayed instead of the pesticide. Work is being done.

  In the conventional spraying device as described above, the operator needs to control the spraying amount of the agricultural chemical by opening and closing a manual valve attached to the hand. Therefore, it is difficult to adjust so that the amount of the pesticide sprayed on one fruit tree is always constant.

  However, in spraying agricultural chemicals and fertilizers, it is important to spray an accurate amount without excess or deficiency. In particular, regarding the use of pesticides, the types of chemicals that can be used for each cultivated crop, their concentrations, spraying amount, number of spraying, etc. are determined by the competent authorities, etc., so work in accordance with these regulations It is needed.

  For this reason, in order to grasp | ascertain the exact spreading amount during the spreading | diffusion work of an agrochemical and a fertilizer, an operator needs to return to a liquid tank suitably, for example, to confirm a spreading amount with the water level in a tank. As mentioned above, the length of the hose connecting the sprayer and the tank is set long enough so that spraying can be continued without moving the tank. However, in this case, the confirmation work takes time. Then, it is difficult to efficiently perform the spraying operation of the agricultural chemical and the fertilizer in a short time.

  In addition, when a spraying operation is performed using a conventional spraying device, it is necessary for the operator to create a separate record of spraying results after the spraying operation is completed, and it cannot be said that the management is efficient.

  The present invention has been made to solve the above-described problems, and is a liquid spraying system that can accurately control the amount of sprayed liquid such as agricultural chemicals and fertilizers, and can easily and efficiently manage after spraying. The purpose is to provide.

  In order to achieve the above object, the invention according to claim 1 is a liquid spraying system for spraying liquid stored in a tank from spraying means connected to the tank via valve means. And detecting means for detecting that the amount of liquid delivered from the tank to the spraying means has reached a predetermined amount by opening the means, and controlling the valve means to close in response to the detection output of the detecting means. And a control means.

  With this configuration, the valve means is automatically closed when the amount of sprayed liquid reaches a predetermined amount.

  According to a second aspect of the present invention, in the configuration of the first aspect of the invention, the detection means includes a flow rate measurement means that is attached between the tank and the spraying means and measures the flow rate of the delivered liquid.

  If comprised in this way, the quantity of the sprayed liquid is measured by the flow volume of the liquid actually sent out from the tank.

  According to a third aspect of the present invention, in the configuration of the second aspect of the invention, the cross-sectional area information input means for inputting the cross-sectional area information of the tank, the cross-sectional area information storage means for storing the input cross-sectional area information, and the tank Based on the liquid level measuring means for acquiring measurement data corresponding to the liquid level of the liquid stored in the tank, the stored cross-sectional area information, and the liquid level corresponding to the acquired measurement data, Liquid amount calculating means for calculating the remaining amount of liquid is further provided.

  If comprised in this way, the residual amount of the liquid stored in the tank will be calculated.

  According to the invention of claim 4, in the configuration of the invention of claim 2, the liquid level measuring means for acquiring measurement data corresponding to the liquid level of the liquid stored in the tank, and at the time of test operation, In a state where the liquid is stored in the tank and the valve is closed, the measurement data is acquired by the liquid level measurement means, and then the flow rate measured by the flow rate measurement means and the measured flow rate are determined with the valve opened. Correspondingly, at least one combination with the measurement data acquired by the liquid level measurement means is acquired, and further, the measurement data is acquired by the liquid level measurement means in a state where all the liquid in the tank is discharged, and the flow rate measurement After obtaining the total amount of liquid initially stored based on the flow rate measured by the means, the conversion data corresponding to each of the acquired measurement data and the amount of liquid in the tank is created. And means, during normal operation, based on the converted data, and further comprising a liquid amount calculating means for calculating the remaining amount of liquid in the tank from the measurement data measured by the measuring means.

  With this configuration, by performing a test operation, conversion data corresponding to the liquid level measurement data and the amount of liquid in the tank is created, and the remaining amount of liquid is determined based on the conversion data during normal operation. Calculated.

  According to a fifth aspect of the present invention, in the configuration of the third or fourth aspect of the present invention, the valve means is attached to the distribution means side, the control means includes a transmission / reception function, has a transmission / reception function, and the distribution means. Terminal means arranged on the side is further provided, and the control means controls the valve means via the terminal means.

  If comprised in this way, a valve means will be controlled via a terminal means.

  According to a sixth aspect of the present invention, in the configuration of the fifth aspect of the invention, the terminal means further includes a display means, and the control means displays the measured liquid flow rate and the calculated remaining liquid amount in the terminal means. The display means displays the flow rate of the transmitted liquid and the remaining amount of the transmitted liquid.

  If comprised in this way, the flow volume and residual amount of a liquid will be displayed on the display means with which a terminal means is provided.

  The invention according to claim 7 is the configuration of the invention according to any one of claims 2 to 6, wherein the liquid is an agrochemical or a fertilizer, and the type input means for inputting the type of the liquid and the input liquid Type storage means for storing the type of liquid, instruction means for instructing output of spraying information including at least the type of liquid stored and the flow rate of liquid measured by the flow rate measurement means, and output of instructions by the instruction means In response, the apparatus further includes scatter information output means for outputting scatter information.

  If comprised in this way, the dispersion | distribution information containing the kind of liquid and its flow volume will be output at least.

  The invention according to claim 8 is a liquid delivery system capable of delivering the liquid stored in the tank from a valve connected to the tank, and the flow rate of the liquid delivered from the tank by opening the valve means. During the test operation, first the liquid was stored in the tank and the valve was closed during the test operation, the flow rate measuring means for measuring, the liquid level measuring means for acquiring the measurement data corresponding to the liquid level of the liquid stored in the tank In the state, the measurement data is obtained by the liquid level measurement means, and then the flow rate measured by the flow measurement means and the liquid level measurement means corresponding to the measured flow rate are obtained with the valve opened. Acquire at least one combination with the measurement data, and with the liquid level measurement means, the measurement data is acquired with the liquid in the tank all discharged, and the flow measurement means After obtaining the total amount of liquid initially stored based on the measured flow rate, calculation means for creating conversion data corresponding to each of the acquired measurement data and the amount of liquid in the tank, and And a calculation means for calculating the remaining amount of liquid in the tank from the measurement data measured by the measurement means based on the conversion data during operation.

  With this configuration, by performing a test operation, conversion data corresponding to the liquid level measurement data and the amount of liquid in the tank is created, and the remaining amount of liquid is determined based on the conversion data during normal operation. Calculated.

  As described above, according to the first aspect of the present invention, when the amount of the sprayed liquid reaches a predetermined amount, the valve means is automatically closed, so that an accurate amount of liquid can be sprayed.

  According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, since the amount of the sprayed liquid is measured by the flow rate of the liquid actually delivered from the tank, the reliability of the sprayed amount detection is reliable. Improves.

  In addition to the effect of the invention described in claim 2, the invention described in claim 3 calculates the remaining amount of liquid stored in the tank, so that the remaining amount of liquid in the tank can be grasped. It becomes.

  In addition to the effect of the invention of claim 3, the invention of claim 4 calculates the remaining amount of liquid based on the conversion data created in the test operation. Regardless of the characteristics, the remaining amount of liquid can be accurately calculated.

  In addition to the effects of the invention according to claim 3 or 4, the invention according to claim 5 controls the valve means via the terminal means, so that the amount of spraying can be controlled regardless of the distance from the tank to the spraying means. It is automatically controlled and easy to use.

  In addition to the effect of the invention described in claim 5, the invention described in claim 6 displays the flow rate and remaining amount of liquid on the display means provided in the terminal means, so that the spray amount and the remaining amount in the tank are always displayed during work. It is easy to use because it can grasp the quantity.

  In addition to the effects of the invention according to any one of claims 2 to 6, the invention according to claim 7 outputs spraying information including at least the type of liquid and its flow rate. Correspondingly, work results can be managed easily and efficiently.

  In the eighth aspect of the invention, since the remaining amount of liquid is calculated based on the conversion data created in the test operation, the remaining amount of liquid can be accurately determined regardless of the shape of the tank and the characteristics of the liquid level measuring means. It is possible to calculate.

  FIG. 1 is a block diagram showing a schematic configuration of a pesticide spraying system according to the first embodiment of the present invention.

  Referring to the figure, a pesticide spraying system 1 according to this embodiment includes a tank 3, a pump 4 attached to the tank 3, a hose 6 to which one end of the pump 4 is connected, and the other end of the hose 6. In addition to the sprayer 5 connected to the section side, a flow meter 15, a water level sensor 12, a totaling terminal 13, a portable terminal 14, and a valve 16 are further provided.

  The agricultural chemical spraying system 1 according to this embodiment is used in a state of being attached to the conventionally used agricultural chemical spraying tank 3 and the pump 4, and the spraying amount of the agricultural chemical 8 from the sprayer 5 has become a predetermined amount. Is detected and automatically controlled to block the spraying of the pesticide 8. In addition, the agricultural chemical spraying system 1 has a function of outputting spraying results as external data in the form of a barcode 18 or a memory card 19, and these external data are input to the terminal device 22 or the server 21 to display the spraying results. Although this can be managed, this point will be described later. Hereinafter, the structure of each part of this agricultural chemical spraying system 1 is demonstrated.

  FIG. 2 is a diagram showing details of the tank shown in FIG. 1 and its peripheral portion.

  Referring to the figure, the tank 3 and the pump 4 are the same as those shown in FIG. 15 and have been conventionally used for spraying agricultural chemicals and the like. As shown in FIG. 2, the pump 4 is connected to the tank via the first pipe 24 and connected to the hose 6 side via the second pipe 25. A third pipe 26 is attached so as to form a flow path that branches from the second pipe 25 and reaches the upper portion of the tank 3. Since the tank 3 and the pump 4 are configured in this way, when the valve 16 is opened while the pump 4 is operated, the agrochemical 8 inside the tank 3 passes through the first pipe 25 to the valve 6 side (the sprayer side). ) In the direction of the solid arrow in the figure. Further, when the valve 16 is closed while the pump 4 is operated, the agricultural chemical 8 circulates in the direction of the two-dot chain line arrow shown in the figure from the second pipe 25 to the third pipe 26, so that the tank The agricultural chemical 8 in 3 is always stirred and maintained in a uniform state.

  The flow meter 15 which is a flow rate measuring means constitutes a part of the detecting means for detecting that the amount of the liquid sent from the tank 3 to the sprayer 5 becomes a predetermined amount. Is installed between. Specifically, as shown in the figure, the flow meter 15 is connected to the pump 4 via the second pipe 25 and to one end of the hose 6. Further, the flow meter 15 is connected to a totaling terminal 13 to be described later, and can output the flow rate of the liquid delivered from the tank 3 to the totaling terminal 13 as an electrical signal.

  The water level sensor 12 constituting the liquid level measuring means is mounted so as to be substantially vertical inside the tank 3. The water level sensor 12 in this embodiment has a substantially cylindrical shape, and a pair of electrodes (not shown) are attached to its inner peripheral wall, and the capacitance between these electrodes can be measured. Since the stored pesticide 8 can enter and exit inside the cylindrical shape of the water level sensor 12 when set in the tank 3, the water level sensor 12 corresponds to the liquid level. Can be obtained as measured data. Moreover, the water level sensor 12 is connected to the totaling terminal 13 and can output the acquired measurement data to the totaling terminal 13 as an electrical signal.

  The valve 16 is attached to the side of the sprayer 5 as in the conventional example, and the pesticide 8 stored in the tank 3 can be delivered from the sprayer by being manually opened during operation. However, as shown in FIG. 1, the valve 16 in this embodiment is connected to the mobile terminal 14, and at least the closing operation is controlled to be automatically performed via the mobile terminal 14. This is different from the manual valve in the conventional example. Further details regarding the control of the valve 16 will be described later.

  FIG. 3 is a functional block diagram of the aggregation terminal shown in FIG.

  With reference to the figure, the totaling terminal 13 includes a transmission / reception unit 29, a liquid crystal touch panel 30, a data output unit 31, and a control unit 28 for controlling them.

  The transmission / reception unit 29 is means for performing data transmission / reception by communicating with the portable terminal 14 described later. In this embodiment, wireless communication is particularly used. However, the present invention is not limited to wireless communication, and transmission / reception may be performed by wired communication.

  The liquid crystal touch panel 30 can input management data including an operator name, a field number, and a work date at the start of use, and a type storage means for inputting drug data including the type of drug used and its dilution rate, It functions as a cross-sectional area information input means for inputting the cross-sectional area information of the tank. Moreover, during use, it is possible to display the set amount of agricultural chemical spray, the actual spray amount, the remaining amount in the tank, and the like. Display contents and input contents at the time of input / output are controlled by the control unit 28. In this embodiment, the liquid crystal touch panel 30 having both an input function and a display function is used. Instead, a display unit and an input unit may be provided separately.

  The data output unit 31 constitutes a scatter information output means, and outputs scatter information including at least the type of medicine and the flow rate measured by the flow meter at the end of the work. This spraying information is output in the form of a bar code, a memory card, or the like shown in FIG. 1 according to an output instruction from an operator, and is used to manage the spraying result of agricultural chemicals.

  The control unit 28 is composed of, for example, a microcomputer, and is means for controlling the transmission / reception unit 29, the liquid crystal touch panel 30, and the data output unit 31. In addition, a storage medium such as a memory is provided, which can function as a type storage unit that stores the type of input liquid and also functions as a cross-sectional area information storage unit that stores input cross-sectional area information. Is possible. The control unit 28 is connected to the water level sensor 12 and can acquire measurement data measured by the water level sensor 12 according to the liquid level of the tank 3. The control unit 28 constitutes a liquid amount calculation means for calculating the remaining amount of liquid in the tank based on the measurement data acquired from the water level sensor 12 and the cross-sectional area information input by the operator. This point will be described later. The control unit 28 is also connected to the flow meter 15, and can acquire the flow rate of the liquid measured by the flow meter 15. Furthermore, the control unit 28 is connected to the barcode reader 32, and it is also possible to input drug data using the barcode reader 32 as a type input means.

  FIG. 4 is a functional block diagram of the mobile terminal shown in FIG.

  Referring to the figure, the mobile terminal 14 includes a transmission / reception unit 35, a display unit 36, an audio output unit 37, a liquid volume input unit 38, and a control unit 34 for controlling them. This portable terminal 14 is worn by an operator during spraying work.

  The transmission / reception unit 35 is a means for performing communication with the above-described totaling terminal 13 to transmit / receive data. The transmission / reception unit 35 is not limited to wireless communication, and may be configured to perform transmission / reception by wired communication.

  The display unit 36 functions as display means for receiving and displaying the remaining amount of liquid in the tank and the flow rate of the liquid transmitted from the totaling terminal 13.

  The voice output unit 37 is a means for notifying the operator by outputting a voice or sound effect to that effect when the liquid flow rate measured by the flow meter reaches a predetermined amount. In this embodiment, as will be described later, an earphone can be connected to the mobile terminal 14, and an operator wears the earphone to perform work. Thus, since the sound output unit 37 is configured to output sound through the earphone, it is possible to reliably notify the worker of the spraying state regardless of noise during the spraying work.

  The liquid amount input unit 38 is a means for setting the amount of liquid sprayed once the valve 16 is opened until it is automatically closed. For example, the worker can appropriately set the amount of application at hand according to the size and type of the tree.

  The control unit 34 includes, for example, a microprocessor, and is connected to a valve 16 attached in the vicinity of the sprayer. Then, an electrical signal for automatically closing the valve is sent in response to a detection output indicating that the amount of sprayed liquid has reached a predetermined amount.

  Here, the method of using the pesticide spraying system configured as described above will be described by taking as an example the case of spraying pesticides in an orchard.

  FIG. 5 is a diagram showing an example of a data input screen displayed on the totaling terminal at the start of use of the agrochemical application system according to the first embodiment of the present invention.

  An operator loads a pesticide spraying system on a light truck and moves to an orchard, and then starts preparation for spraying.

  First, referring to (1) of FIG. 5, when the worker activates the agricultural chemical spraying system, a management data input screen is displayed on the liquid crystal touch panel 30 of the aggregation terminal 13. In the example of the figure, as the management data, the producer name “◯◯ ΔΔ”, the field number “051”, and the date of application “2004-07-07” are displayed. From this state, when the “producer name” button, the “field number” button, and the “dispersion date” button are touched with fingers, an input screen (not shown) is displayed, and the contents of the display can be changed. In addition, when a “clear” button at the bottom of the screen is touched, the displayed contents can be deleted. Then, after inputting the management data to be input, when the “OK” button at the bottom of the screen is touched, the screen changes to (2) in FIG.

  Next, referring to (2) of FIG. 5, the drug name “drug XYZ” and the magnification “1000 times” are displayed as drug data on the screen. If the “drug name” button or the “magnification” button is touched, the display contents can be changed as in (1) of FIG.

  In this embodiment, as shown in FIG. 3, data can be input using a barcode reader. For example, it is possible to automatically input a drug name stored in correspondence with a barcode by storing data related to the drug in advance and reading a barcode attached to the package of the medicine to be used. . In this way, there is no possibility of entering the medicine name by mistake, and usability is improved. Further, when the dilution rate is determined in advance according to the drug used, it is possible to automatically display the magnification simply by inputting the drug used. In this way, there is no risk of mistaken drug dilution ratios, and usability is further improved. Further, not only drug data but also a bar code may be prepared in advance for each operator name or field number, and management data may be input by reading the bar code with a bar code reader.

  When the operator inputs the drug data and then touches the “OK” button at the bottom of the screen, the screen changes to (3) in FIG.

  With reference to (3) of FIG. 5, the confirmation screen of the input management data and medicine data is displayed on the screen. To correct the displayed content, the user can touch the “re-input” button at the bottom of the screen to return to (1) in FIG. 5 again to correct the input content. If the contents of the confirmation screen are correct, touch the “OK” button to move to the next screen.

  FIG. 6 is a diagram illustrating an example of a tank cross-sectional area information input screen displayed on the aggregation terminal subsequent to FIG. 5.

  With reference to (1) of FIG. 6, the selection screen of the shape of a medicine container is displayed on the screen. If the tank to be used is a rectangular parallelepiped, touch the “Rectangle” button. If the tank to be used is cylindrical, touch the “Circle” button to select the cross-sectional shape. For example, when the “Rectangle” button is touched, the screen changes to (2) in FIG.

  With reference to (2) of FIG. 6, when the cross-sectional shape is a quadrangle, columns of vertical dimension and horizontal dimension are displayed. When the “vertical dimension” button and the “horizontal dimension” button are touched, an input screen (not shown) is displayed, and the dimensions of the section of the tank to be used can be respectively input. When the input is completed, touching the “OK” button at the bottom of the screen changes the screen to (3) in FIG.

  With reference to (3) of FIG. 6, the confirmation screen of the cross-sectional area information of a tank is displayed on the screen. To correct the displayed contents of the tank shape, which is the cross-sectional area information, and the dimensions of the tank for calculating the cross-sectional area, touch the “Re-input” button at the bottom of the screen again to display (1) in FIG. You can return to and correct your input. If the contents of the confirmation screen are correct, touch the “OK” button.

  Here, the case where the cross-sectional area information is input in the case of a tank having a square cross section has been described. However, in the case of a tank having a circular cross section, a similar screen for inputting the diameter of the container is displayed. .

  The cross-sectional area information input in this way is used to calculate the remaining amount of liquid in the tank. Here, the remaining amount of liquid in the tank is calculated using a water level sensor. The method will be described in detail. In this embodiment, the liquid amount calculation means for calculating the remaining amount of liquid in the tank is realized by the function of the microcomputer of the control unit in the counting terminal.

  First, the pesticide stored in the tank is prepared by diluting with water that is several hundred times the weight of the drug, for example, and its concentration is extremely dilute, so the capacitance measured by the water level sensor is almost It is possible to approximate the value using the dielectric constant of water. Then, theoretically, the capacitance measured by the water level sensor is defined by the ratio of water and air that are dielectrics. Therefore, based on the measured capacitance, it is possible to specify the ratio of water and air in the vertical direction of the electrode, that is, the relative position of the liquid level in the tank with respect to the lower end of the electrode.

  In accordance with this principle, the liquid amount measuring means calculates the height of the liquid level using the capacitance that is measurement data measured by the water level sensor that is the liquid level measuring means. The remaining amount of liquid in the tank can be calculated based on the calculated height and the input cross-sectional dimension.

  After inputting management data, drug data, and cross-sectional data as described above, the worker puts a predetermined amount of drug into the tank, and further adds water with a weight corresponding to the dilution ratio to the tank for spraying. To prepare. Then, the pump is started with the valve closed, and the agricultural chemical in the tank is stirred.

  In addition, if the dilution rate is specified according to the type of drug used at the preparation stage of this pesticide, simply enter the drug name and the drug weight to be used, and the amount of water required for dilution will be displayed. You may do it. Furthermore, the actual concentration of the pesticide in the tank is calculated from the name and weight of the input drug and the amount of water in the tank calculated based on the water level sensor, and the concentration according to the type of drug used. It can also be configured to check whether it is diluted. When the amount of water is insufficient, the insufficient amount may be displayed together. If it does in this way, it will become possible to perform management of dilution work of an agricultural chemical, and the amount of spread.

  Then, after wearing the complete protective clothing, the worker wears the portable terminal and wears the earphone connected to the portable terminal to the ear, and the preparatory work for spraying is completed.

  FIG. 7 is a schematic view showing the operation of the portable terminal when the pesticide spraying system according to the first embodiment of the present invention is used, and FIG. 8 is a pesticide spraying system according to the first embodiment of the present invention. It is the figure which showed an example of the screen displayed on a totaling terminal at the time of use of. In addition, each of (1)-(3) of FIG. 7 and each of (1)-(3) of FIG. 8 is a screen displayed correspondingly, respectively.

  First, referring to (1) of FIG. 7 and (1) of FIG. 8, the display unit 36 of the portable terminal 14 worn by the operator has “set amount”, “present application amount”, and “ “Remaining tank capacity” is displayed. The “set amount” is the amount of liquid delivered from the time the valve 16 is opened until it is closed, and the “current application amount” is the flow rate of the liquid measured by the flow meter, that is, actually sent from the sprayer. The “remaining tank capacity” is the amount of liquid in the tank calculated based on the measurement data from the water level sensor. This “set amount” can be changed in the range of 1 to 9 liters, for example, by rotating the dial-shaped liquid amount input unit 38 attached to the side surface of the mobile terminal 14 in the direction of the arrow. It is. In the example of the figure, the “set amount” is set to 2.0 liters. Further, both the “current application amount” and the “remaining tank amount” are calculated by the control unit of the totaling terminal 13, and are transmitted from the totaling terminal 13 to the portable terminal 14 via wireless communication. It is displayed on the display unit 36 of the terminal 14. In the example in the figure, 0.0 liter is displayed as the “current application amount” and 900.0 liters (ie, the amount of pesticide prepared first) because it is the state before the start of the application operation. Amount) is displayed.

  Next, referring to (2) of FIG. 7 and (2) of FIG. 8, when the operator manually opens the valve 16, the pesticide is sent out from a sprayer (not shown). 14 and the display on the liquid crystal touch panel 30 of the totaling terminal 13 are updated. In the example shown in the figure, “current application amount” is displayed as 1.2 liters based on the flow rate measured by the flow meter. Further, based on the cross-sectional area of the tank calculated using the cross-sectional area information input in FIG. 6 and the water level in the tank calculated using the measurement data acquired by the water level sensor, The actual liquid amount is calculated, and the “remaining tank capacity” is displayed as 898.8 liters.

  Then, referring to (3) of FIG. 7 and (3) of FIG. 8, when it is detected that the flow rate measured by the flowmeter has reached a predetermined amount, that is, the set amount of 2.0 liters, The control unit of the terminal 13 controls the valve 16 to be closed by sending a signal to the valve 16 via the portable terminal 14 as schematically shown by a two-dot chain line in FIG. As a method of control via the portable terminal 14, for example, an instruction to close the valve 16 may be transmitted from the totaling terminal 13 to the portable terminal 14, and the mobile terminal 14 is portable based on the flow rate transmitted from the totaling terminal 13. The timing of closing the valve 16 may be determined by the control unit of the terminal 14.

  In the agricultural chemical spraying system according to this embodiment, the control means configured by the totaling terminal 13 and the portable terminal 14 is controlled to automatically close the valve 16 in this way, so that the operator can accurately A set amount of pesticide can be sprayed. In addition, since the control for closing the valve is performed via a portable terminal, which is a terminal means, even when working away from the tank at the time of work, the spraying amount is automatically controlled regardless of the distance. Is good.

  Further, as shown in (3) of FIG. 7, a sound for notifying that a set amount of pesticide has been sprayed is output from the sound output unit of the mobile terminal 14 via the earphone 39. In the example shown in the figure, since the spray amount reaches the set value of 2.0 liters, “2 liters” is output. Thus, since the notification is made by voice, the operator can easily grasp that the set amount has been dispersed without looking at the screen of the portable terminal. In this example, the sound is output only when the application amount reaches the set amount. However, in addition to this, the sound output may be performed every time a predetermined amount is applied. For example, regardless of the set amount, if it is configured to output a sound to that effect every time 1.0 liter is sprayed, it will be a guide for the amount sprayed on the fruit tree, which is convenient.

  When the spraying of the pesticide is completed on the first fruit tree, the worker moves on foot to the adjacent fruit tree and repeats the spraying of the pesticide by the same procedure. At this time, the portable terminal 14 and the totaling terminal 13 repeat the same screen transition as shown in FIGS. 7 and 8 while updating the display contents.

  As described above with reference to FIG. 7, since the flow rate of the liquid and the remaining amount in the tank are displayed on the display unit of the portable terminal arranged on the sprayer side as the spraying means, the worker always sprays during the work. It is easy to use because it can grasp the amount and the remaining amount in the tank. Further, since the displayed liquid flow rate is measured by the flow rate of the liquid actually delivered from the tank, the reliability of detecting the spray amount is improved. Furthermore, since the remaining amount of liquid stored in the tank is calculated by the liquid amount calculation means based on the measurement data of the water level sensor, it is possible to grasp the remaining amount of liquid in the tank, and the display unit It is possible to use it by a method such as displaying on the screen.

  Finally, when the spraying of the agricultural chemicals is completed on all the fruit trees to be sprayed, the operator returns to the totaling terminal 13 and the “END” button (FIG. 8) arranged at the lower part of the screen of the liquid crystal touch panel 30. Touch).

  FIG. 9 is a diagram showing an example of a result confirmation screen displayed on the totaling terminal in the agrochemical application system according to the first embodiment of the present invention.

  Referring to the figure, when the operator touches the “end” button on the previous screen of FIG. 8, the management data and medicine data input at the start of the work and the actual application amount are displayed on the screen. When the operator confirms the displayed content and touches the “Output” button at the bottom of the screen, the scatter information displayed on the screen is printed as a barcode or electronic data in response to the output instruction. It is stored in a storage medium such as a memory card. In this way, since the spraying information including at least the type of agricultural chemical and the actual spraying amount is output after the work is completed, it is possible to easily and efficiently manage the work results corresponding to the actual work. Become.

  Here, returning to FIG. 1, for example, the scattered information output from the totaling terminal 13 in the form of the barcode 18 or the memory card 19 indicates that the operator 10 sends the contents of the barcode 18 or the memory card 19 to the terminal device 22. The distribution information is read and transmitted to the server 21 installed in the management center or the like via the network 20. Further, instead of inputting the scatter information once to the terminal device 22, it may be sent directly to the management center or the like and directly input to the server 21. In the server 21 such as a management center, it is possible to easily manage the scattered information of workers by making a database.

  FIG. 10 is a flowchart showing the contents of the system control in the first embodiment of the present invention.

  When the operator starts the system after arriving at the farm where the pesticide is to be sprayed, the system displays a management data input screen (S200, (1) in FIG. 5). When the operator completes the input of the management data displayed on the screen (S100), the system then displays the medicine data input screen (S201, (2) in FIG. 5). When the operator inputs the drug data on the screen or by barcode (S101), the system displays a confirmation screen (S202). The operator confirms the input contents of the management data and the medicine data ((3) in FIG. 5), and when correcting (No in S102), returns to step S100 again to change the input contents (S100 to S102). ). At this time (No in S203), the system displays the input screen again (S200 to S203).

  When the worker confirms the input contents of the management data and the medicine data (Yes in S102, (3) in FIG. 5), the system responds to the worker's confirmation (Yes in S203) and displays the cross-sectional area information input screen. (S204, FIG. 6 (1) and (2)). When the operator inputs cross-sectional area information including the shape and cross-sectional dimensions of the medicine container (S103), the system displays a cross-sectional area information confirmation screen (S205). When the operator confirms the input content and then corrects it (No in S104), the operator returns to Step S103 again to input cross-sectional area information. At this time (No in S206), the system displays the cross-sectional area information input screen again (S204 to S206, FIG. 6).

  After confirming the input contents (Yes in S104, (3) in FIG. 6), the operator prepares the medicine and operates the pump (S105). At this time, the worker wears full protective clothing, wears a portable terminal, and moves to the fruit tree to which the pesticide is to be sprayed with a sprayer. In response to the operator's confirmation (Yes in S206), the system displays a screen indicating the state of spraying (S207, FIGS. 7 and 8). At this time, the display unit (FIG. 7) of the mobile terminal displays the flow rate of the liquid transmitted from the totaling terminal and the remaining amount in the tank.

  When the worker arrives at the fruit tree to be sprayed and manually opens the valve (S106), the pesticide is delivered from the sprayer by the pump, and the worker performs the spraying work while appropriately moving around the fruit tree (S107). At this time, the control unit of the totaling terminal constituting the control means detects whether or not the flow rate measured by the flow meter is equal to the set value of the spray amount (S208). If the measured flow rate is not equal to the set amount (No in S208), the measured flow rate and the calculated remaining amount are updated and displayed (S207).

  When the measured flow rate becomes equal to the set amount (Yes in S208), the system controls to automatically close the valve via the terminal means (S209), and further, a sound indicating that the set amount has been dispersed. Is output from the voice output unit of the terminal means (S210).

  Thereafter, the operator repeats the spraying operation in the same manner while sequentially moving to the fruit trees to be sprayed (No in S106 to S108), and the system repeats the same valve control correspondingly (No in S207 to S211). .

  Then, the pesticide is sprayed on all fruit trees to be sprayed by the operator, and when all the work is completed (Yes in S108), the end button of the counting terminal is pressed (S109, FIG. 8). In response to the termination instruction (Yes in S211), the system displays a scatter result confirmation screen on the aggregation terminal (S212, FIG. 9). The operator presses an “output” button on the scatter result confirmation screen to instruct the output of scatter information (S110), and finishes all operations. In response to an instruction to output the scatter information, the system outputs the scatter information to a barcode, a memory card, or the like (S213), and the process ends.

  By controlling as described above, it is possible not only to accurately control the spraying amount of liquid such as agricultural chemicals and fertilizers, but also to realize a liquid spraying system that can easily and efficiently manage the spraying amount even after work. It becomes possible.

  FIG. 11 is a functional block diagram of a totaling terminal constituting an agrochemical spraying system according to the second embodiment of the present invention.

  Referring to the figure, the basic configuration of the agricultural chemical spraying system according to this embodiment is the same as that according to the first embodiment, but the measurement data of the water level sensor and the remaining amount of liquid in the tank The point which is provided with the calculating part 41 which produces | generates the conversion data which linked | related is different from 1st Embodiment. Hereinafter, a description will be given in accordance with a specific example, focusing on the function of the calculation unit 41 as a difference.

  FIG. 12 is a cross-sectional view of a tank used in the agricultural chemical spraying system according to the second embodiment of the present invention, and FIG. 13 shows an example of conversion data created in the arithmetic unit shown in FIG. FIG.

  Referring to FIG. 12, the pesticide spraying system according to the first and previous embodiments is used by being attached to an existing tank that has been conventionally used for spraying pesticides and the like. The shape of existing tanks varies depending on the product and may not be a perfect cuboid or cylinder. Then, since the horizontal cross-sectional area of the tank is not uniform, even if the water level in the tank can be calculated based on the water level sensor, the calculated water level is multiplied by the tank cross-sectional area input by the operator. In this method, there may be a case where the remaining amount of liquid in the tank cannot be accurately measured. For example, assuming a truncated cone-shaped tank 3 as shown in the figure, the calculated remaining amount will increase or decrease from the actual position depending on which cross-section is selected as the cross-sectional area for calculating the remaining amount of liquid. .

  Therefore, in this embodiment, the calculation unit creates conversion data in which the measurement data of the water level sensor and the remaining amount of liquid are associated according to the shape of the tank, and the conversion data created by the liquid amount calculation means in the control unit The remaining amount of liquid in the tank can be calculated based on the above.

With reference to FIG. 13 as well, details of the test operation performed to create the conversion data will be described. First, the worker stores an arbitrary amount of water 43 in the tank 3. The liquid level at this time is L ₀ and the total volume of water 43 is temporarily V ₀ . The calculation unit acquires the capacitance measured by the water level sensor 12 with the valve closed. The capacitance obtained at this time and S _0.

Next, with the valve opened, the water 43 in the tank 3 is gradually discharged. In this discharging process, the calculation unit acquires and stores at least one combination of the flow rate measured by the flow meter and the capacitance acquired by the water level sensor 12 at the time when the flow rate is measured. More specifically with reference to the figure, each time the liquid level reaches L ₁ , L ₂ ,..., L ₆ while discharging the water 43 in the tank 3 by a certain volume ΔV ₁ , Capacitances S ₁ , S ₂ ,..., S ₆ acquired by the sensor 12 are acquired. Since the flow rate measured by the flow meter increases by ΔV ₁ , the arithmetic unit calculates (S ₁ , ΔV ₁ ), (S ₂ , 2 × ΔV) as a combination of the flow rate measured by the flow meter and the capacitance. ₁ ),..., (S ₆ , 6 × ΔV ₁ ) are obtained. At this time, the volume of water in the tank 3, _{L 1,} L 2 is a liquid level, ..., when in the _{L 6,} respectively _{(V 0 -ΔV 1), (} V 0 -2 × ΔV 1 ),... (V ₀ −6 × ΔV ₁ ).

In the example of the figure, six sets of combinations of the flow rate and the capacitance are acquired, but not necessarily six sets, and a plurality of combinations until the volume of the water 43 reaches V ₂ (where V ₂ <= ΔV ₁ ). This can be done repeatedly.

Further, the discharge of water 43 the volume V ₂ remaining in the tank 3, the water 43 in the tank 3 is all discharged state, to obtain the electrostatic capacitance of the water level sensor 12. The capacitance of this time is S _7. Incidentally, the capacitance S ₇ water 43 in the tank 3 has been obtained in all the discharge state is to use to define the criteria for calculating the volume of liquid in the tank 3.

Thereafter, the calculation unit obtains a specific value of the arbitrary volume V ₀ that was initially stored by the flow rate measured by the flow meter.

The arithmetic unit obtains a plurality of combinations (S ₁ , ΔV ₁ ), (S ₂ , 2 ×) of the initial volume V ₀ acquired as described above, the capacitance S _{0 at} this time, and the flow rate and the capacitance. ΔV ₁ ),..., (S ₆ , 6 × ΔV ₁ ) and the capacitance S ₇ in a state where all the water 43 is discharged, and the amount of liquid measured in each of the measured capacitances An approximate curve as shown in FIG. 13 is created and stored as conversion data corresponding to. Moreover, you may obtain | require an approximate expression and a conversion table from this approximated curve as needed.

  Thereafter, during normal operation, the amount of liquid in the tank can be calculated based on the created conversion data. For example, when the capacitance value acquired by the water level sensor 12 is X, as shown in FIG. 13, the liquid amount calculation unit calculates the volume Y of the water 43 in the tank 3 based on the approximate curve as shown in FIG. Can be obtained.

  In this way, once the test operation is performed and the conversion data is created by the calculation unit, the remaining amount of liquid is calculated from the conversion data and the capacitance value acquired by the water level sensor 12 during normal operation. Therefore, it is possible to acquire an accurate remaining amount of liquid regardless of the shape of the tank and the characteristics of the water level sensor.

  FIG. 14 is a flowchart showing an example of system control performed at the time of test operation in the agricultural chemical spraying system according to the second embodiment of the present invention.

Referring to the figure, when performing a test operation to create conversion data, first, the operator injects an arbitrary amount of water into the tank (S150) and discharges water at every measurement interval (figure 12 ΔV ₁₎ to set up a (S151). System, which is then stored as the amount of setting the amount of water operator-specified (S250), acquires the electrostatic capacitance measured by the water level sensor (S251, S ₀ in Fig. _13). Further, the system resets the flow meter (S252).

Next, the worker opens the valve and starts discharging the water in the tank (S152). The system acquires the flow rate measured by the flow meter (S253), and when the acquired flow rate is an integer multiple of the set amount (ΔV _{1 in} FIG. 12) (Yes in S254), the system measures the flow rate. After acquiring the capacitance (S255) and storing the combination of the measured flow rate and the capacitance (S256), the determination in step S257 is performed. If the measured flow rate is not an integral multiple of the set amount (No in S254), the determination in step S257 is performed without acquiring the capacitance.

The system acquires the flow rate of the flow meter again, and determines whether there is a flow rate change (S257). This step is for determining whether all the water in the tank has been discharged. If there is a change in the flow rate of the flow meter (Yes in S257), water still remains in the tank, so the process returns to Step S253 again and repeats the above processing (S253 to S257, L _{1 to} L in FIG. 13). ₆ ).

On the other hand, when there is no change in the flow rate of the flowmeter (No in S257), because the water in the tank is discharged all measures the electrostatic capacitance in this state (S258, _S 7 of FIG. 13). In addition, the amount of water initially poured is acquired based on the flow rate measured by the flow meter (S259).

Then, the measured electrostatic capacity is measured using the initial amount of water (V _{0 in} FIG. 13) and the flow rate (ΔV ₁ , 2 × ΔV ₁ ,...) In the process of discharging the water. The remaining amount of water corresponding to each of the capacities is calculated (S260, (V ₀ -ΔV ₁ ) in FIG. 13). The system calculates an approximate curve by associating each of the calculated remaining amounts of water with each of the stored capacitances (S261, FIG. 13). Thereafter, an approximate expression or the like is calculated and stored as necessary (S262), and the system operation of the test operation is terminated.

  In each of the above-described embodiments, the method of using the pesticide spraying system is described as an example of spraying pesticides on orchards. However, not only pesticides but also fertilizers and water are sprayed. Can be used as well. Needless to say, it can be used not only for fruit trees but also for other crops such as fields.

  In each of the above embodiments, the scatter information is output in the form of a barcode, a memory card or the like and input to the server or the like. However, the configuration is not necessarily required, and the scatter information is output as a form. Alternatively, it may be configured such that what is output as a so-called two-dimensional bar code is captured by a camera-equipped mobile phone or the like and transmitted to a server, or the aggregation terminal is directly connected to a network for transmission.

  Furthermore, in each of the above embodiments, a capacitance level type water level meter is used as the water level sensor as the liquid level measuring means, but the water level sensor is not necessarily limited to such a water level sensor. What is necessary is just to be able to acquire measurement data according to the level.

  Further, in each of the above-described embodiments, the flow meter is used as a detection unit that detects that the amount of liquid delivered to the sprayer, which is a spraying unit, has reached a predetermined amount. There is no need, and the amount of the delivered liquid may be detected based on a change in the amount of the liquid in the tank measured by the water level gauge.

Furthermore, in the second embodiment, when creating the conversion data, a plurality of combinations of flow rate and capacitance are acquired while discharging water in the tank, but it is not always necessary to acquire a plurality. In the discharge process, conversion data can be created if at least one combination of flow rate and capacitance is acquired. For example, in FIG. 13, in addition to the data of the point L ₀ and the point L _7, if there is any one of data of the points L _{1 ~} point L _6, it is possible to create a curve.

  Furthermore, in the second embodiment described above, when creating the conversion data, the combination of the flow rate and the capacitance is acquired while discharging the water in the tank at a constant rate. However, the combination may be acquired every time an arbitrary amount of water is discharged.

It is the block diagram which showed schematic structure of the agrochemical spraying system by 1st Embodiment of this invention. It is the figure which showed the detail of the tank shown in FIG. 1, and its peripheral part. FIG. 2 is a functional block diagram of a counting terminal shown in FIG. 1. It is a functional block diagram of the portable terminal shown in FIG. It is the figure which showed an example of the data input screen displayed on a total terminal at the time of the start of use of the agrochemical spraying system by 1st Embodiment of this invention. It is the figure which showed an example of the cross-sectional area information input screen of the tank displayed on a totaling terminal following FIG. It is the schematic which showed operation | movement of the portable terminal at the time of use of the agrochemical spraying system by 1st Embodiment of this invention. It is the figure which showed an example of the screen displayed on a totaling terminal at the time of use of the agrochemical spraying system by 1st Embodiment of this invention. In the agrochemical distribution system by a 1st embodiment of this invention, it is the figure which showed an example of the result confirmation screen displayed on a total terminal. It is the flowchart which showed the content of the system control in 1st Embodiment of this invention. It is a functional block diagram of the totaling terminal which comprises the agrochemical spraying system by 2nd Embodiment of this invention. It is sectional drawing of the tank used with the agrochemical spraying system by 2nd Embodiment of this invention. It is the figure which showed an example of the conversion data produced in the calculating part shown in FIG. It is the flowchart which showed an example of the system control performed at the time of test driving | operation in the agrochemical spraying system by 2nd Embodiment of this invention. It is the block diagram which showed the outline of the spraying method of the agrochemical conventionally performed.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Pesticide spraying system 3 ... Tank 5 ... Sprayer 8 ... Pesticide 12 ... Water level sensor 13 ... Counting terminal 14 ... Portable terminal 15 ... Flow meter 16 ... Valve 18 ... Bar code 19 ... Memory card 28, 34 ... Control part 29, 35 ... Transmission / reception unit 30 ... Liquid crystal touch panel 31 ... Data output unit 36 ... Display unit 41 ... Calculation unit 43 ... Water In addition, the same code | symbol in each figure shows the same or an equivalent part.

Claims (8)

A liquid spraying system for spraying liquid stored in a tank from spraying means connected to the tank via valve means,
Detecting means for detecting that the amount of liquid delivered from the tank to the spraying means has reached a predetermined amount by opening the valve means;
And a control means for controlling the valve means to close in response to the detection output of the detection means. The liquid spraying system according to claim 1, wherein the detection unit includes a flow rate measuring unit that is attached between the tank and the spraying unit and measures a flow rate of the delivered liquid. Cross-sectional area information input means for inputting cross-sectional area information of the tank;
Cross-sectional area information storage means for storing the input cross-sectional area information;
Liquid level measuring means for acquiring measurement data corresponding to the liquid level of the liquid stored in the tank;
The liquid amount calculation means for calculating the remaining amount of liquid in the tank based on the stored cross-sectional area information and the liquid level corresponding to the acquired measurement data. Liquid spreading system. Liquid level measuring means for acquiring measurement data corresponding to the liquid level of the liquid stored in the tank;
During the test operation, first, liquid is stored in the tank and the valve is closed. Then, the measurement data is obtained by the liquid level measuring means, and then the flow rate measuring means is opened. And at least one combination of the measurement data acquired by the liquid level measurement unit corresponding to the measured flow rate, and the liquid in the tank is completely discharged Then, after obtaining the measurement data by the liquid level measurement means, after obtaining the total amount of the liquid that was initially stored based on the flow rate measured by the flow rate measurement means, each of the acquired measurement data, Calculation means for creating conversion data corresponding to the amount of liquid in the tank;
3. The liquid spraying system according to claim 2, further comprising: a liquid amount calculation unit that calculates a remaining amount of liquid in the tank from measurement data measured by the measurement unit based on the conversion data during normal operation. The valve means is attached to the spraying means side,
The control means includes a transmission / reception function,
It further has a transmission / reception function, and further comprises terminal means arranged on the spreading means side,
The liquid spraying system according to claim 3 or 4, wherein the control means controls the valve means via the terminal means. The terminal means further comprises display means,
The control means transmits the measured liquid flow rate and the calculated liquid remaining amount to the terminal means,
The liquid spraying system according to claim 5, wherein the display unit displays a flow rate of the transmitted liquid and a remaining amount of the transmitted liquid. The liquid is a pesticide or fertilizer,
Type input means for inputting the type of the liquid;
Type storage means for storing the type of the input liquid;
Instructing means for instructing output of spraying information including at least the type of the stored liquid and the flow rate of the liquid measured by the flow rate measuring means,
The liquid spraying system according to any one of claims 2 to 6, further comprising spraying information output means for outputting the spraying information in response to an instruction output by the pointing means. A liquid delivery system capable of delivering liquid stored in a tank from a valve connected to the tank,
Flow rate measuring means for measuring the flow rate of the liquid delivered from the tank by opening the valve means;
Liquid level measuring means for acquiring measurement data corresponding to the liquid level of the liquid stored in the tank;
At the time of test operation, first, liquid is stored in the tank and the valve is closed, measurement data is acquired by the liquid level measuring means, and then the valve is opened, the flow rate measuring means A state in which at least one combination of the flow rate measured by the measurement data acquired by the liquid level measurement means corresponding to the measured flow rate is acquired, and the liquid in the tank is completely discharged Then, after obtaining the measurement data by the liquid level measurement means, after obtaining the total amount of the liquid that was initially stored based on the flow rate measured by the flow rate measurement means, each of the acquired measurement data, Calculation means for creating conversion data corresponding to the amount of liquid in the tank;
A liquid delivery system comprising: calculation means for calculating the remaining amount of liquid in the tank from measurement data measured by the measurement means based on the conversion data during normal operation.

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