SU1410917A1 - Control system for multisupport frontal sprinkler - Google Patents

Abstract

This invention relates to agriculture. The aim of the invention is to increase machine productivity and uniform irrigation. The control unit includes a heading stabilization device 1 with sensors for deviation from the direction of the cable, its cable, equipped with two rods 3 installed above the guide cable, the main pressure pipe 9 and electro-hydraulic valves installed between the power pipe 7 and the hydraulic cylinders 8 of the drives of the end carriages. The cylinders 8 are provided with sensors 10 for their operation cycles, connected to the command generation unit 5, to which timer 13 and setting units 11 and 12 of the nominal speed of movement of the end carriages and movement speed during correction are also connected. In order to increase the uniformity and yield, the device is additionally equipped with gauges 14 of the path traveled by the end carts and logical and block 15, two inputs of which are connected to the distance meter and the timer output, and two outputs are connected to the command generation unit. 2 Il. with (L

Description

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The invention relates to agriculture and can be used to automatically control the movement of front wide action sprinkler machines (SHDM) with hydraulic drive of the support carriages.

The aim of the invention is to increase machine productivity and uniform irrigation.

FIG. 1 is a block diagram of a control device for a multi-support frontal sprinkler; in fig. 2 is a diagram of a logic unit and a command generation unit.

The device consists of a course stabilization device 1 (Fig. 1 and 2), which serves to control the speeds of the end carts 2 (left and right) when the rods of 3 sensors deviate from the direction of the cable 4. The sensors through the course stabilizer 1 are connected with

OR 21, the second element AND 22, the element OR 23, and the switches 24. Inverter 20 (the logic circuit is NOT) serves to invert the correction signal produced by the heading stabilization device 1 by the signals of 5 deviation sensors from the direction of its cable. The input of the inverter 20 is connected to the output of the first element And 17. The inputs of the second logical elements And 22 receive a correction signal generated by the decoder of the counter 19 according to the signals of the heading stabilization device 1.

The control unit of the multi-support front sprinkler works as follows

When moving the MDA without correction signals from the meters 14 of the path traveled to the logic unit 15, electrical impulses are received, the number of which corresponds to the distance traveled by the last trucks (left and right). If due to proskal15

unit 5 forming commands, prednazyvaniya wheels or any other designated for the formation commands to turn on and off the electro-hydraulic valves 6 of the right and left wing of the machine. Electro-hydraulic valves 6 serve to open and close pipelines 7 supplying hydraulic cylinders 8 for driving the end carriages 2 (right and left wings) connected to the main pressure pipe 9 of the machine. On hydraulic cylinders 8 drives of the end carriages 2 ustan25

the rank of the true speed of any of the extreme trucks changed (for example, decreased), the number of pulses from this cart is less than the number of pulses of the other wing of the sprinkler. Logic block 15 produces a “false correction” of the wing that goes a long way. With a "false correction," the trolley 2, which ran out at the end, lowers its speed of movement, and when on the way, the sensors of the 10 cycles of operation of the hydraulic devices of both wings (left and

cylinders (for the right and left wings), each of which is a end switch that serves to determine the number of cycles performed by the hydraulic cylinder 8 of the drive of the end carriage 2.

ave.) will become less than acceptable, a "false correction signal is removed. This correction occurs when there is no lateral deviation of the sprinkler. In case lateral deviation is formed.

Each sensor 10 cycles of operation 35 logic unit 15, as it were, is not included in the hydraulic cylinders connected to block 5 form-work. This is explained by the principle of action.

logical block 15.

The signal from the meters 14 traveled path goes to two flip-flops 16, respectively, to their inputs S. From the output of the flip-flops 16, the signal goes to the logic element AND 17. At the same time, the second inputs of the logic elements And 17 receive a signal from the multivibrator 18. The output signals of the multivibrator 18 are two his exits running into it) in the correction mode and under-45 are shifted relative to each other in such a way connected to the command generation unit 5. at the same time, so that both signals are never ip- Timer 13 is intended for the formation of time pulses and is connected to the command generation unit 5. Path meters 14, mounted on the right and left wings, are used to measure the path traveled by the end carriages 2 (left and right) and are connected to logic block 15 connected to timer 13 and block 5

roving teams. The unit 11 of the nominal speed of movement of the end carriages is designed to set the speed of movement of the end carts 2, depending on the norm-. Leva, and is connected to the block 5 of the formation of commands. The unit 12 of the speed of movement of the end carriages, when corrected, is designed to set the reduced speed of movement of one of the end carriages 2 (with

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team building.

Logic block 15 consists of a trigger 16, made two-channel, the first element And 17, multivibrator 18, counter 19 decoder, inverter 20, element

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are at the same time. From the outputs of the elements And 17 signals are fed to the inputs of the counter 19. For example, the signals from the left wing of the sprinkler are fed to the subtractive input -1, and the signals of the right wing to the summing input +1 of the counter 19. The output signal of the elements And 17 is inverted using inverters 20 and is fed to the reset input R of the trigger 16. The multivibrator 18 is triggered by timer 13. The input input R of the counter 19 receives a signal through the element OR 21, from the heading stabilization device 1 (from both corrections)

OR 21, the second element AND 22, the element OR 23, and the switches 24. Inverter 20 (the logic circuit is NOT) serves to invert the correction signal produced by the device 1 for stabilizing the course by the signals of the deviation sensors from the direction of its cable. The input of the inverter 20 is connected to the output of the first element And 17. The inputs of the second logical elements And 22 receive a correction signal generated by the decoder of the counter 19 according to the signals of the heading stabilization device 1.

The control unit of the multi-support front sprinkler works as follows

When moving the MDA without correction signals from the meters 14 of the path traveled to the logic unit 15, electrical impulses are received, the number of which corresponds to the distance traveled by the last trucks (left and right). If because of the proscal

wheeling or any other when

the rank of the true speed of any of the extreme trucks changed (for example, decreased), the number of pulses from this cart is less than the number of pulses of the other wing of the sprinkler. Logic block 15 produces a “false correction” of the wing that goes a long way. With a "false correction," the cart 2, which has run out extreme, decreases its speed of movement, and when the paths are traveled by the carriages of both wings (left and

ave.) will become less than acceptable, a "false correction signal is removed. This correction occurs when there is no lateral deviation of the sprinkler. In case lateral deviation is formed.

logic unit 15 is not involved in the operation. This is explained by the principle of action.

The signal from the meters 14 traveled path goes to two flip-flops 16, respectively, to their inputs S. From the output of the flip-flops 16, the signal goes to the logic element AND 17. At the same time, the second inputs of the logic elements And 17 receive a signal from the multivibrator 18. The output signals of the multivibrator 18 are two its outputs 5 are shifted relative to each other in such a way that both signals are never

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five

are at the same time. From the outputs of the elements And 17 signals are fed to the inputs of the counter 19. For example, the signals from the left wing of the sprinkler are fed to the subtractive input -1, and the signals of the right wing to the summing input +1 of the counter 19. The output signal of the elements And 17 is inverted using inverters 20 and is fed to the reset input R of the trigger 16. The multivibrator 18 is triggered by timer 13. The input input R of the counter 19 receives a signal through the element OR 21, from the heading stabilization device 1 (from both corrections)

to reset the counter 19 when correcting. The input element OR 21 also receives a pulse, which is produced by the RC-chain when the power is manually supplied to the machine start circuit.

At the output of the counter 19, two elements AND 22 are installed, the outputs of which are connected to the inputs of the element OR 23, which are installed in the circuit of the heading stabilization device 1 and the command generation unit 5. The outputs of the counter 19 with the elements And 22 are connected with the help of switches 24, which together with the schemes And 22 form a deflector of the number recorded in the counter corresponding to the amount of advance (or lag) of the right (or left) wing. When the counter 19 reaches the reading, for example, a certain set value, say 5, the logical "1" signal appears at the output of the first element And 22. When the counter 19 is shown, the digit -5 at the output of the other element And 22 appears logical "1. Thus, when one wing runs out relative to the other, for example, for 5 pulses (provided that the gauge 14 of the traversed path produces 1 pulse when passing 0.5 m of the path), a "false correction signal is generated. Upon further movement of the runaway wing with a reduced speed, the readings of counter 19 decrease, and, therefore, when the counter is less than +5 or greater than -5, the signal of the false correction is removed. If a correction occurs due to lateral deviation, the counter 19 is zeroed by the signal from the heading stabilization device 1 through the OR 21 circuit and the wing correction proceeds. When the lateral deviation of the sprinkler is less than acceptable, the correction signal is removed. From this point on, counter 19 begins counting the incoming pulses from meter 14 of the distance traveled.

The use of the invention makes it possible to increase the yield of agricultural crops by increasing the uniformity of irrigation and to increase the productivity of the sprinkler by reducing the number of corrections leading to a decrease in the speed of movement of the machine.

Claims (1)

Invention Formula 0 0 five 0 five The control unit of the multi-support frontal sprinkler, which includes controllers for the nominal speed of movement of the end carriages and their movement speed during correction, connected to the 5th first and second inputs of the command generation unit, the third input of which is connected to the timer, the fourth and fifth inputs are connected to the sensor outputs of the deviation of the machine from the guide cable, and the sixth and seventh are connected to the sensor outputs of the cycles of the hydraulic cylinders of the drive of the end carriages, hydraulically connected connected with the pipeline of the machine through electro-hydraulic valves connected to the outputs of the command-forming unit, characterized in that, in order to improve the performance of the machine and the uniformity of irrigation, the device is equipped with measures of the path traveled by the end carriages and the logic unit connected to them, made in two channels in the form of series-connected in each channel of the trigger and the And circuit, connected to the summing and subtracting inputs of the counter with the decoder, the outputs of which are connected to two additional command generating unit moves, wherein the second inputs of the AND gates are connected via a multivibrator timer and reset to zero inputs of flip-flops - to the outputs of AND circuits through inverters in each channel. npaSoe wing Surf wing -1 JJe6oe  KpblflO fig 2