KR100203017B1 - A direct injection-mixing total-flow-control boom sprayer system - Google Patents

Abstract

The present invention relates to an apparatus for spraying pesticides and, more particularly, to an apparatus for spraying a pesticide with a pesticide and a diluent in a transportation means such as a pesticide and a diluent, in a pesticide injecting type sprayer And more particularly, to a pesticide injecting type branching agent capable of ensuring the uniformity of the pesticide application concentration by automatically controlling the concentration of the pesticide in accordance with the traveling speed.

The change in the traveling speed of the transportation means appears as a variation in the total sprayed amount of the pesticide, and even if the same concentration of the pesticide is sprayed by the nozzle, the total amount of the pesticide sprayed on the crop becomes large as a result, There arises a problem of spraying or insufficient spraying.

The present invention is characterized by comprising means for detecting the traveling speed of the transportation means and means for controlling the amount of the pesticide injected in response to the sensed speed information to sense the traveling speed of the transportation means and controlling the concentration and the amount of the pesticide according to the traveling speed Provided is a pesticide injecting-type pipe cleaner capable of maximizing the control effect and preventing excessive spraying of the pesticide by automatic control so as to protect the operator and the environment.

Description

Pesticide injection system

The present invention relates to an A Birect Injection Boom Sprayer in which an agricultural chemical is directly injected into a diluent (water).

In particular, according to the present invention, the diluting concentration of the pesticide is kept constant by interlocking the amount of the pesticide injected according to the change of the flow rate, and the amount of the mixed solution of the diluted liquid and the pesticide of a constant concentration is increased or decreased according to the traveling speed of the transportation means, The present invention relates to a pesticide-injecting-type branching agent which can be used.

More specifically, the pesticide injecting-type branching agent of the present invention senses the traveling speed of a transportation means such as a tractor running with pesticides and a dilute solution mounted thereon, changes the supply amount of the diluting liquid (water) according to the sensed traveling speed, By detecting the supply flow rate of the diluent which varies according to the speed, the amount of pesticide injected per unit area is made uniform by controlling the injection amount of the pesticide according to the flow rate variation, and by connecting the pesticide injection amount according to the change of the flow rate, The present invention relates to a pesticide-injection-type branching agent which can be maintained constantly.

Considering current labor intensive, inefficient, and avoidance of work in the control work which is considered to be essential in the production process of agricultural products, a direct injection total flow control system has been developed in terms of production efficiency, control effect, worker and environment protection , The direct injection system that automatically weighs and mixes according to the conditions of the spraying operation separates the workers from the pesticides and minimizes the damage caused by the contact. After the control work, the pesticide residues and the standard containers are recovered, Lt; / RTI >

1, there is shown a pesticide dilution injecting apparatus (Japanese Patent Laid-Open Publication No. Hei 2-303441, Dec. 17, 1990) of the pesticide application type sprayer as a conventional technique.

A pump 3 and a motor 4 for generating a pesticide spraying pressure and water as a diluting liquid. The pump 1 is connected to the nozzle 1, An infusion pump 7 and an infusion pump driving motor 8 for injecting the pesticide in the undiluted solution tank 6 and a pump 8 for driving the infusion pump 6, A control means 9 composed of a microcomputer 9a and an amplifier 9b for controlling the driving speed of the pump driving motor 8 and a controller 9 for controlling the driving speed of the pump driving motor 8 from the pump 3 via the switching valve 3 to the nozzle 1 And a flow meter 11 for detecting the supply flow rate through the pressure control valve 10 and inputting the detected flow rate to the control means 9. The operation of the flow meter 11 is as follows.

The pump 3 is operated by the driving of the motor 4 for spraying the pesticide and the injection pump 7 is operated by the driving of the motor 8 to feed the water of the water tank 5 with the pesticide And is sprayed to the nozzle 1 through the switching valve 2. [

The oil pressure sprayed to the nozzle 1 is detected by the flowmeter 11 via the control valve 10 and input to the microcomputer 9a of the control means 9. [

In the microcomputer 9a, the set dilution factor is inputted through the key input, and the microcomputer 9a reads the flow rate of the fleece passing through the flowmeter 11.

The microcomputer 9a obtains the nozzle use flow rate by calculating the difference between the total amount of the pump and the flow rate of the freeness water, compares the flow rate with the dilution magnification, stops the injection pump drive motor 8, The speed command voltage of the drive motor 8 is calculated and applied to the motor 8 via the command voltage amplifier 9b to drive the injection pump to rotate at an appropriate rotation speed.

Thus, the pesticide is automatically controlled to be sprayed at the set dilution magnification.

Most of the direct injection type total flow control type sprayer, including these conventional sprayers, focuses only on the mixing ratio of the undiluted solution and the diluted solution, thereby controlling the spraying concentration and the spraying amount of the pesticide. And the like.

However, the transient error of the sprayed amount due to the delay time at which the concentration of the pesticide reaches the nozzle exceeds the general allowable value.

In particular, there is no consideration of the traveling speed of the transportation means carrying the bucket and the pesticide barrel.

However, even if the concentration of the pesticide sprayed into the nozzle is maintained at a constant value by automatically controlling the dilution ratio of the pesticide or the spraying pressure as described above, the total sprayed amount per unit area varies depending on the speed at which the transportation means travels, . That is, when the transportation speed is slow, the pesticide of the same concentration is sprayed in the same area (the total spray amount is increased), and when the transportation means travels at a high speed, The concentration of the pesticide is a small amount (the total amount of application is reduced).

Even if the same concentration of pesticides is injected into the nozzles, the total amount of the pesticides sprayed on the crops becomes large, resulting in overspray of pesticides There is a problem of spraying.

These problems lead to safety problems of workers due to overpowing of pesticides, problems of environmental destruction, problems of crops being damaged by pesticides, and the like. In addition, when the pesticide is sprayed in an excessively small amount, the effect of controlling the pesticide is deteriorated.

On the other hand, Korean Patent Publication No. 89-9259 discloses a technique of changing the pesticide injection amount according to the traveling speed of the transportation means in consideration of the traveling speed of the transportation means. This technology is a liquid dispensing apparatus that adjusts the flow of a herbicide pump and water in response to a velocity-related signal generated from a moving speed sensor of a spraying apparatus to adjust the output of the variable limiting apparatus so that the area density of the herbicide applied to the ground becomes the same.

This technique changes the concentration by changing the pace of the pesticide with respect to the change of the running speed.

That is, the dilution concentration is changed by changing the supply flow rate of the dilution liquid (water) and the injection amount of the pesticide (herbicide) in accordance with the change of the traveling speed of the transportation means.

Therefore, in order to keep the total application amount per unit area constant; If the driving speed increases (decreases) from V to V ', the amount of pesticide injected is increased (decreased) from Q to Q' to increase (decrease) the concentration from C to C '. As a result, the total amount of pesticide per unit area is constant maintain.

However, even when the mixed liquid having the concentration changed from C to C 'reaches the nozzle branch, the vehicle travels at a speed increased (decreased) to V', so that the traveled distance (area) Since the spraying has been carried out, the uniformity of the sprayed amount has an error corresponding to the arrival delay time to the nozzle of the changed concentration.

According to the present invention, the injection amount of the pesticide injected into the diluting liquid can be variably controlled according to the flow rate, so that the diluting concentration can be kept constant even if the running speed of the transportation means changes. The amount of the mixed liquid of the pesticide and the diluting liquid, The present invention provides an agrochemical injectable-type branching agent capable of uniformly spraying a pesticide having a predetermined concentration without delay time regardless of a change in the traveling speed of the transportation means.

The present invention relates to a method for controlling a driving speed of a transportation means in conjunction with a pesticide injection amount control, comprising the steps of sensing the traveling speed of the transportation means and varying the supply flow rate of the diluting liquid (water) according to the traveling speed, The amount of the pesticide injected and mixed into the diluent is adjusted and adjusted so as to correspond to the fluctuation of the supply flow rate of the diluting liquid to spray the mixed solution of the water and the pesticide at a constant concentration, And to provide an injection type branching agent.

FIG. 1 is a block diagram showing the construction of a conventional pesticide diluent type injection pesticide

2 is a view showing an example in which a sprayer of the present invention is mounted on a tractor

FIG. 3 is a diagram showing the system and circuit configuration of the pesticide injecting-type branching agent of the present invention

4 is a detailed view of components connected to the control unit and the control unit in the present invention;

5 is a flowchart of a control procedure performed by the control unit in the present invention;

DESCRIPTION OF THE REFERENCE NUMERALS

12: power supply 13: switch box

14: control circuit part 15: tractor wheel

16: Speed sensor 17: PTO transmission

18: Main pump 19: Water tank

20: Main pipe 20a: Hose

20b: return pipe 21: pressure gauge

22: pressure transducer 23: electronic flow control valve

24: Regular relay 25: Solenoid boom valve

26: Flow meter 27: Injection port

28: stock solution (pesticide) tank 29: injection pump

30: Infusion pump motor 31: Motor drive circuit

32: RPM encoder 33: density sensor

34: branch 35: nozzle

36: frequency voltage converter 38: central processing unit

39: digital-to-analog converter 40: BCD counter

41: analogue digital converter 42, 43: interface

As an example of the present invention for achieving the above object, a case of mounting on a tractor is shown briefly in Fig.

As shown in FIG. 2, a tractor is used as a transportation means to install a water tank 19 and a stock tank 28, and a branch 34 having a plurality of nozzles 35, ) Of the pesticide sprayed to the nozzle 35 according to the result of detecting the running speed from the rotational speed.

FIG. 3 shows an example of the pesticide injecting-type branching agent of the present invention which achieves the above-mentioned object.

3, the pesticide injecting-type branching agent of the present invention has a power source 12, a switch box 13 for operating a controller operation, and a control circuit section 14 for controlling the entire operation of the controller .

The switch box 13 is connected to the control circuit part 14 and the power source 12 is connected to supply operating power to each component including the control circuit part 14. [

A proximity sensor is provided as a speed sensor 16 to detect the rotational speed of the tractor wheel 15 = the traveling speed.

The speed sensor 16 is provided with a proximity sensor on a plurality of teeth arranged circularly on the side of the wheel 15 to apply a pulse signal corresponding to the rotation of the wheel 15 to the control circuit 14. [

On the other hand, the main pump 18 is connected to the transmission 17 to receive power from the tractor engine, and a water tank 19 is also provided.

A hose 20a for sucking water in the water tank 19 into the main pipe 20 by sucking the main pump 18 is connected to a filter 19b provided inside the water tank 19, ).

A pressure gauge 21 and a pressure transducer 22 are installed in the main pipe 20 connected to the main pump 18 and the pressure transducer 22 is connected to the control circuit 14.

A recovery pipe 20b for recovering water left without being mixed with pesticides in the water discharged through the main pipe 20 to the side of the water tank 19 is connected and an electromagnetic flow control valve 23 and a relay 24 for driving the valve 23 in the forward and reverse directions is connected to the control circuit 14.

The solenoid boom valve 25 is connected to the control circuit 14 and the turbine flowmeter 20 is connected to the main pipeline 20 and the return pipeline 20b to connect the injection pipeline. 28 are connected to the control circuit part 14, and an injection port 27 for mixing the pesticide and water is also provided.

An infusion pump 29 for injecting the pesticide in the puddle 28 into the injection port 27 and the pump driving DC motor 30 are installed .

The motor 30 is connected to the control circuit unit 14 through a motor drive circuit 31.

The RPM encoder 32 for detecting the rotation speed of the motor 30 is connected to the control circuit 14. [

A concentration sensor 33 for detecting the concentration of diluted pesticide solution through the injection port 27 is provided in the boom 34 for spraying the diluted pesticide. 35).

FIG. 4 is a diagram showing the configuration between the internal configuration of the control circuit unit 14 and the peripheral components thereof.

The control circuit unit 14 includes a central processing unit (CPU), a digital / analog converter, an optical isolation interface circuit, a counter, and an analog / digital converter.

Referring to FIG. 4, the frequency / voltage conversion circuit 36 for converting the signals (AC signals having periods) sensed by the RPM encoder 32 and the flow meter 26 into voltages and inputting them to the control circuit 14 And further includes a voltage divider 37 for dividing the voltage of the power supply 12 and applying the divided voltage to the control circuit unit 14. [

The above frequency / voltage converter 36 is applied to the practical device, which replaces the BCD counter 40. In a fast control interval, the resolution of the signal through the counter is lowered, which affects the stability, The practical instrument uses a frequency voltage converter instead of the counter to convert the sensing signal of the flow meter 26, which senses the flow rate of the water pump 29 and the flow rate of the water pump 29, into a voltage value and converts the voltage value into a digital signal And the central processing unit 38 recognizes it.

4, the control circuit unit 14 includes a central processing unit 38 for executing the control procedure of the pesticide control, and a controller 38 for converting the control command of the central processing unit 38 into an analog signal, A BCD counter for counting the signals detected by the RPM encoder 32 and the flow meter 26 and inputting the counted signals to the central processing unit 38; An analog digital converter 41 for converting a voltage value converted from the frequency voltage converter 36 into a digital signal and inputting the digital signal to the central processing unit 38, A digital output interface 42 for outputting a drive command for the valve 33 and the relay 24 and a digital output interface 42 for inputting the signals of the switch box 13 and the speed sensor 16 to the central processing unit 38. [ And an input interface 43.

The interfaces 42 and 43 are optically isolated using the optical couplers 42a and 43a and have switching elements 42b.

4, the detailed configuration of the relay 24 and the detailed configuration of the switch box 13 are shown.

The relay 24 is composed of a forward rotation relay 24a and a reverse rotation relay 24b. When a drive current flows from the control circuit 14 to the excitation coil, the contact is turned on. The switch box 13 has a main switch SWm, a reset switch SWr, a fuse, and the like.

The reset switch SWr is used as a manual reset switch so that the pressure is maintained at 300 kPa for calibration and inspection of the nozzle.

In the pesticide injecting-type sprayer of the present invention constructed as described above, the flow rate and concentration are controlled in the procedure as shown in FIG.

That is, the power is applied, and during the initial several seconds, various variables are read and calculated and the system initialization is performed. The central processing unit 38 performs initialization in step 502 through a first scan in step 501.

The injection parameters (K1 (k) and K2 (k) are the input parameters of the pesticide application (F, L / ha), the spray width (W, m), the slip rate ), Injection pump sensitivity (k2), dilution liquid (water) flow adjustment sensitivity (k3), and flow adjustment tolerance (k4).

Then, in step 503, the variable A is set to A = F * W * Sf (1-C) / C and the interval of control and measurement is determined by a clock (step 504) After the pressure PRS, the supply voltage volt, the tractor speed SPD, the diluent flow rates FLW and Qw and the injection pump RPM RPM are measured in step 505, The target flow rates Tflw and TQw are calculated (step 506).

That is, the pressure PRS by the pressure transducer 22 and the supply voltage Volt value of the power supply 12 are input to the central processing unit 38 and measured through the analogue digital converter 41, The diluent flow rates FLW and Qw and the injection pump RPM are measured by inputting the values of the tractor running speed SPD by the speed sensor 16 through the flow meter 26 and the RPM encoder 32 In step 506. In step 506, the target flow rate Tflw is calculated from the tractor speed SPD and the variable A as Tflw = A * SPD.

Then, in steps 507 to 509, it is checked whether the main switch SWm is turned on, whether the main pump is operating normally, the tractor is driving, and the flow rate of the diluting liquid and / Control the injection amount.

In step 510, when the main switch SWm is turned off and the PTO is turned off, the output of the digital-to-analog converter 39 is set to '0' so that the injection pump motor 30 is not driven.

In step 511 and subsequent steps, control is performed such that the target concentration (Tflw = A * SPD) information including the tractor running speed information corresponding to the pressure, the flow rate,

Here, the control of the flow rate is determined by using the difference (□ LW) and the sensitivity (k3) between the target flow amount and the actual flow amount, the forward / reverse rotation and the rotation time of the flow control valve 23 within the error tolerance k4 (Steps 514 to 518).

The injection amount is obtained by calculating the target pump revolution number Trpm using the dilution liquid flow rate FLW and Qw and the adjustment coefficient k1 and calculating the difference between the target revolution number and the actual revolution number □ PM and the sensitivity k2 And the digital signal is converted into a digital signal by the digital-analog conversion and sent to the pump driving circuit to adjust the number of revolutions (steps 521 to 528).

In order to adjust and reset the cleaning operation in the stop state of the tractor, it is checked whether the main switch is turned on and whether the main pump operates normally, and the pressure in the main pipe is controlled to be 300 kPa (steps 511 to 513).

At this time, the operation is performed to check the flow rate of each nozzle or return to normal when the system malfunctions, and the pressure control is adjusted to the forward and backward rotation of the flow control valve 23 within the error tolerance range of 1% (steps 519, 520, 526, 527 and 529) The rotation number of the injection pump 29 is fixed to '0' so that the pesticide is never injected.

The upper limit was set to 420 kPa and the lower limit was set to 100 kPa (steps 519 and 520) so that the flow control valve 23 would not rotate excessively.

The above-described control procedure of step 511 and the above will be described in more detail.

If the reset switch SWr is turned on in step 511, the process proceeds to step 519 via step 513 (timer = 200 ms) when the pressure PRS in the main pipe is smaller than 300 kPa in step 512.

Then, in step 514, the central processing unit 38 compares the flow rate measured in step 505 with the target flow rate Tflw in consideration of the flow adjustment allowable error k4, + k4FLW, ΔFLW = Tflw-FLW is obtained in step 516, the process proceeds to the next step 518, and a timer is set to ΔFLW = * k3, and the process proceeds to step 519.

On the other hand, if Tflw-k4? FLW in step 515,? FLW = FLW-Tflw is obtained in step 517 and the timer is set to? FLW = * k3 in step 518,

In steps 519 and 520, the measured pressure PRS is compared to an upper limit of 420 kPa and a lower limit of 100 kPa.

If the pressure PRS measured in step 519 is 420 kPaPRS100 kPa, the process proceeds to step 526 where the central processing unit 38 drives the forward and reverse relay 24 via the digital output interface 42 to adjust the electronic flow rate When the pressure PRS measured in step 520 is 420 kPa 100 kPa, the flow proceeds to step 527 to drive the electromagnetic flow regulating valve 23 in the reverse direction (Pressure and flow reduction). The pressure and flow rate are controlled as described above.

On the other hand, when the main switch SWm and the PTO are turned on and the tractor is running, the amount of the diluted solution injected is controlled in step 521 and thereafter.

That is, the target pump rotational speed Trpm is determined as Trpm = FLW * k1. In step 512, the rotational speed of the injection pump motor 30 measured by the RPM encoder 32 input through the counter 40 RPM) is compared with the target rotation speed Trpm to obtain the difference DELTA RPM in step 523. In step 523, the motor drive command from the digital-to-analog converter 39 is determined in consideration of the injection pump sensitivity k2 (D / A out = ± ΔRPM * k2).

If the motor drive command (D / A output value) is smaller than 3500r in step 524, the process proceeds to step 528. Otherwise, it is determined to be 3500 in step 525, .

In step 528, the motor drive command is supplied to the motor drive circuit 31 through the digital-analog converter 39 in the central processing unit 38 to control the rotation speed of the injection pump motor 30, .

In step 529, it is determined whether or not the process is terminated (QUIT).

By controlling the above procedure, it is possible to quantitatively control the total amount of the spray per unit area in accordance with the advancing speed of the sprayer. Hereinafter, the spray of the pesticide injecting sprayer of the present invention constituted as shown in FIGS. Advantageous effects of the present invention will be explained on the basis of examples.

A typical operating method of the boom sprayer is to select the number of stages of the tractor main transmission corresponding to the target speed (for example, 10 kph), select the number of the PTO transmission 17 corresponding to the rated number of rotations of the main pump 18, (throttle) is fixed to a predetermined number of revolutions (rpm) to perform the control work.

However, as the load varies, the forward speed and the PTO rotation speed vary within ± 20%, which causes an error in the spray amount. Therefore, in order to correct this, the slipage of the wheel 15 is set at 10% The target flow rate of the diluting liquid is determined in accordance with the variation of the advancing speed and the target flow rate of the infusion pump 29 is determined in proportion to the actual flow rate by operating the electromagnetic flow control valve 23 in the forward / To maintain the concentration constant.

When the main pump 18 is operated by the power of the tractor engine, the agitator 19a generates an appropriate water flow in the water in the water tank 19 and the foreign matter is filtered through the filter 19b to pass through the hose 20a The water that is sucked is poured into the main pipe (20).

Water passing through the main pipe 20 is branched into the return pipe 20b and the injection pipe.

The pressure sensor 21 on the main pipe 20 indicates the pressure of water passing through the main pipe 20 and the pressure sensing signal converted through the pressure transducer 22 is supplied to the analog digital converter Is converted into a digital signal through the central processing unit 41 and input to the central processing unit 38, thereby recognizing the pressure.

On the other hand, the electronic flow rate control valve 23 on the return pipe 20b is controlled by the forward / reverse relay 24 to regulate the flow rate. This means that the command output from the central processing unit 38 is supplied to the optically isolated digital output interface Is applied to the relay (24) via the relay (42).

That is, when a positive or negative command output from the central processing unit 38 is output through the optical coupler 42a and the switching element 42b and the output command is applied to the positive relay 24a, 23 are forwardly driven and the electromagnetic relay 23 is reversely driven when the reverse relay 24b is applied.

The central processing unit 38 controls the start and stop of the spraying operation by opening and closing the solenoid boom valve 25 through the digital output interface 42.

At this time, the state of the spraying operation, that is, the state in which the solenoid boom valve 25 is opened and the spraying operation is performed in the nozzle 35, is operationally advantageous for the operator, and only when the main switch SWm is manually opened, .

When the operator operates the main switch SWm of the switch box 13, the central processing unit 38 recognizes this through the optically isolated digital input interface 43. [

The central processing unit 38 opens the solenoid boom valve 25 in response to the start of operation so that the water flowing from the main pipe 20 into the injection pipe flows through the injection pipe, ), And the central processing unit 38 recognizes the numerical value quantified through the BCD counter 40.

As described above, in the practical device, the frequency voltage converter 36 converts the sensing signal sensed by the flow meter 26 into a voltage, and converts the sensed signal into a digital value through an analogue digital converter 41 38) is read.

On the other hand, the injection pump motor command output from the central processing unit 38 is converted into an analog signal through the digital-to-analog converter 39 and input to the motor drive circuit 31, The pump motor 30 is driven to operate the injection pump 29 and the pesticide in the undiluted solution tank 28 is injected into the injection port 27 by the operation of the injection pump 29 so that the solenoid valve 25 And the flow meter 26, and the diluted pesticide is sprayed to the plurality of nozzles 35 through the branch pipe 34. [0050]

At this time, the rotational speed of the motor 30 is sensed by the RPM encoder 32, and the sensed rotational speed is counted by the BCD counter 40 and recognized by the central processing unit 38.

As described above, in the practical device, the frequency voltage converter 36 converts the sensing signal sensed by the RPM encoder 32 into a voltage, and converts the sensed signal into a digital value through an analogue digital converter 41, (38).

The speed sensor 16 detects the rotation of the wheel 15 as the tractor advances and outputs the detected running speed signal to the central processing unit 38 through the optical coupler 43a of the digital input interface 43 .

The voltage of the power source 12 is also read through the digital input interface 43 to monitor the variation of the power source voltage.

As described above, the central processing unit 38 reads the total pressure of water on the main pipe 20 through the pressure transducer 22.

The central processing unit 38 reads the flow rate of only water on the injection pipe through the flow meter 26.

The central processing unit 38 reads the rotational speed of the injection pump motor 30 through the RPM encoder 32 as information corresponding to the amount of pesticide injected.

Further, the central processing unit 38 reads the running speed of the tractor through the speed sensor 16.

The target flow rate of the diluted liquid (water) is determined according to the information read in the above manner, particularly the variation of the advancing speed at which the slip ratio of the wheel 15 is taken as 10%, and the digital output interface 42 To rotate the electromagnetic flow control valve 33 in the forward and reverse directions.

That is, the target flow rate of the diluting liquid (water) is determined in accordance with the fluctuation of the running speed of the tractor, and the electromagnetic flow regulating valve 23 on the return line 23 is appropriately rotated or reversely driven to supply the diluting liquid And the flow rate is changed according to the traveling speed of the tractor.

In this way, the actual flow rate of the dilution liquid (water) which varies according to the traveling speed of the tractor is sensed by the flow meter 26 on the injection pipeline, and the actual flow rate sensed by the flow meter 26 is input to the control circuit 14, Of the total amount of the pesticide.

That is, the target rotation speed of the injection pump 29 is determined in proportion to the actual flow rate of the diluted liquid (water) sensed by the flow meter 23, and the motor rotation speed (30) is driven to adjust the injection amount of the pesticide injected into the injection port (27) by the injection pump (29) in accordance with the flow rate variation.

The pesticide injection amount by the pesticide injection pump 29 is controlled by controlling the rotation speed of the motor 30 to the determined target rotation speed by sensing the rotation speed of the motor 30 with the RPM encoder 32, Let the dosage be.

As a result, in the present invention, when the traveling speed of the transportation means such as a tractor is adjusted to the control of the dilution concentration of the pesticide, the feeding amount of the diluting liquid (water) is changed according to the traveling speed of the transportation means, The spraying amount of the pesticide at a constant concentration regardless of the change of the traveling speed is sprayed in relation to the traveling speed.

In this way, the dilution concentration is kept constant by interlocking the injected amount of the pesticide according to the fluctuation of the flow rate, so that even if the traveling speed of the transportation means changes, there is no delay time and the dispensing error is eliminated. Respectively.

In the present invention, as the traveling speed of the transportation means changes, the feeding amount of the diluting liquid (water) is changed, and the amount of pesticide injected q is changed to q 'according to the actual flow rate of the diluting liquid converted from Q to Q' The total application amount of the pesticide per unit area is made equal so that the concentration C before and after the change in the traveling speed is kept constant regardless of the speed change.

That is, if the traveling speed of the transportation means increases from V to V ', the supply amount of the diluting liquid (water) is increased from Q to Q' so that the amount of the diluting liquid (water) So that the total application amount per unit area is uniformly maintained in response to the change). By increasing the amount of pesticide injected from q to q 'in response to the changed flow rate, the concentration C is kept constant at the same value before and after the flow rate change. Therefore, regardless of whether the running speed is changed or not, By spraying with the changed flow rate Q 'corresponding to the traveling speed V', even when the traveling speed of the transportation means changes, the conventional delay time is eliminated and the maintenance of a constant concentration and uniformity of the total sprayed amount of pesticides per unit area are secured.

In the present invention, in reflecting the traveling speed of the transportation means such as a tractor to the control of the dilution concentration of the pesticide, the supply amount of the diluting liquid (water) is changed according to the traveling speed of the transportation means, The amount of injection is controlled. Therefore, according to the present invention, the diluting concentration can be kept constant by interlocking the pesticide injection amount according to the change of the flow rate, and even if the traveling speed of the transportation means changes, the pesticide injection amount is controlled in accordance with the variation of the dilution liquid flow rate Therefore, it is possible to keep the total application amount of the pesticide per unit area and the concentration of the pesticide at a constant level. Therefore, it is possible not only to secure a high control effect but also to prevent excessive pesticide application and to control the threats of safety of the workers due to excessive pesticide application, It has the effect of protecting the environment.

Claims (6)

The diluted liquid is supplied to the diluting liquid supplied along the pipeline while the diluting liquid (water) is pumped from the transportation means equipped with the pesticide control device and the diluted liquid is supplied along the predetermined pipeline, the diluted mixed liquid is sprayed through the spray nozzle, A direct injection type pesticide control system for detecting a running speed of the transportation means and controlling the injected amount of the diluting liquid and the pesticide according to the sensed speed, the system comprising: A dilution liquid flow rate sensing means for sensing an actual supply flow rate of the dilution liquid adjusted by the dilution liquid flow rate regulating means and a pesticide injection regulating means for controlling an injection amount of the pesticide based on the diluent liquid flow rate sensed by the diluent liquid flow rate sensing means , The control of the flow rate of the diluent is controlled according to the traveling speed of the transportation means, Determining the pesticide dose from the sensed flow rate control according to the agricultural chemical pesticide-operated branch bangjegi to control the injection control means, characterized by further comprising control means for controlling to maintain a constant concentration of the diluted pesticide. 2. The apparatus according to claim 1, wherein the control means comprises: means for determining a target flow rate of the diluting liquid in accordance with the running speed of the transportation means; and means for detecting a target flow rate of the pesticide injection controlling means And means for controlling the diluent supply flow rate at the target flow rate and for controlling the pesticide injection control means at a target injection amount corresponding to the actual flow rate of the diluted diluent detected. A branching agent. A tank for pumping the diluted solution, means for pumping water in the tank, means for pumping the pesticide in the tank, pesticide injected into the water provided by the pumping means, Wherein the means for spraying the diluted pesticide, the means for traveling in a state in which the respective means are mounted, and the means for providing power to the respective means, A solenoid boom valve 25 for opening the diluted liquid spray, an electromagnetic flow rate control valve 23 for controlling the dilution liquid flow rate, and a control valve A driving relay 24, a flow meter 26 for sensing the dilution liquid flow rate, a pressure transducer 22 for sensing the dilution fluid pressure and supplying the diluted fluid pressure to the control circuit, a pump 29 for pumping the stock solution An injection port 27 for injecting the undiluted solution into the diluting liquid which has passed through the flow meter 26 by the pumping action of the pump 29, An encoder 32 for sensing the rotational speed of the injection pump motor 30, a speed sensor 16 for detecting the rotation of the vehicle wheels for detecting the traveling speed of the vehicle, (a). (B) determining a target flow rate of the dilution liquid in accordance with the variation of the velocity sensed by the velocity sensor 16; The electronic flow control valve 23 is operated through the relay 24 in a forward / reverse direction, (c). The target rotation speed of the injection pump 29 is determined in proportion to the actual flow rate sensed by the flow meter 26 and the rotation speed of the injection pump motor 30 is detected by the encoder 32 through the motor drive circuit 31, And a control circuit unit (14) for controlling the rotation speed of the pump (29) by controlling the injection amount of the undiluted solution (pesticide) and spraying the same at a constant concentration. 4. The apparatus according to claim 3, wherein the control circuit part (14) comprises: a central processing unit (38) for reading the sensing signals and outputting a concentration and a flow rate adjustment command; A digital-to-analog converter 39 for converting an injection pump motor drive command into an analog signal and outputting the signal; a means for inputting the signal detected by the encoder 32 and the flow meter 26 to the central processing unit 38; An analog digital converter 41 for converting the detection signal of the pressure transducer 22 of the central processing unit 38 into a digital signal and inputting the digital signal to the central processing unit 38, A digital output interface 42 and a digital input interface 43 for inputting the command of the switch box 13 or the speed detection signal of the speed sensor 16 to the central processing unit 38 Characterized by Pesticide-operated annex bangjegi. 5. The apparatus according to claim 4, wherein the input means comprises a counter (40) for counting the signals output from the encoder (32) and the flow meter (26) Injection system. 5. The apparatus of claim 4, wherein the input means comprises a frequency voltage converter (36) for frequency / voltage-converting the signal output from the encoder (32) and the flow meter (26) And an analog digital converter for converting the digital signal into a digital signal and inputting the digital signal to the central processing unit (38).