Automated irrigation system

 

(57) Abstract:

Usage: in agriculture, in particular in automated systems irrigation of agricultural crops both surface and subsurface methods. The invention is: to improve the accuracy of determining the time duration between successive irrigations considering the influence of wind speed on evaporation from soil surface and transpiration by the appropriate witness to measure the surface area of the evaporation of water from the evaporative capacity of the node to generate a pause between watering. 1 Il.

The invention relates to automation of irrigation systems and can be used for irrigation of agricultural public cultures.

Known automated watering system containing communicated between a supply and irrigation pipelines that are installed on the inlet line to the water meter and electric controlled shutoff valve, a wind speed sensor and a controller including a power source, the first binary adder, bit inputs which are connected to the outputs of the flow meter and the unit production rate of irrigation water, and the entrance transfer Junior level associated with the output block signal lovealbum, containing evaporative capacity provided through connection with irrigation pipeline, reversible motor, the magnetic contact and the float level control (1).

The disadvantage of this system is enclosed in a low accuracy of determination of the length of time between irrigations, due to the low sensitivity to wind site generation pauses included in the system.

The purpose of the invention to improve the accuracy of determining the length of time between watering.

This goal is achieved by the fact that the controller is equipped with the third element, a timer, a binary pulse counter, the second binary adder, inverter gray code to binary code Converter angle to the gray code and the reversing amplifier and the node generation pause between irrigations provided with an intermediate capacity to accommodate the float level regulator installed on the connecting pipe between the irrigation pipe and evaporative capacity, made in the form of bellows, the upper fixed part which is the gladden fields aperture connected through a worm gear to the shaft of a reversible electric motor, and at the bottom, mobile CAS installed on vertical rods, attached to the outer surface of the bottom of the evaporation vessel and arranged to be movable in the guides, and the magnetic contact is placed on the bottom of one of the vertical rods, and the output transfer high-order bit of the first binary adder is connected to a trigger input of the timer and the first control input electrically operated shut-off valve, the second control input through which the magnetic contact is connected to a power source, and through the shaper pulses to the input of the stop timer, and the first last and the output of the wind speed sensor are connected to the inputs of the first element And whose output and the second output of the timer are connected, respectively, with the accounts and boleushim inputs binary counter pulses, and outputs the latter are connected with the first group of inputs of the second binary adder, the second input of which is connected to the outputs of Converter "to the gray code binary code inputs connected to the outputs of Converter "corner of the gray code", the entrance of which is kinematically connected with the shaft of reversible motor, and the control inputs of the latter through the reversing amplifier connected to the outputs of veramente OR inputs connected to the bit outputs of the second binary adder, the output of the transfer of the senior discharge of which is connected to the third input of the second element And through the element is NOT with the third input of the third element, And the input transfer LSB of the second binary adder is connected to the AC signal of the logic unit.

Presents a block diagram of an automated watering system contains communicated between the inlet 1 and irrigation 2 pipelines that are installed on the inlet line (1 meter 3 and the electric controlled shutoff valve 4, a sensor 5 wind speed, and the controller 6 includes a power source 7, the first binary adder 8, bit inputs which are connected to the outputs of the flowmeter 3 and the block 9 production, irrigation rates, and input 10 transfer LSB is connected with the output unit 11 of the signal of the logic unit, item, OR 12, two elements And 13, 14, item 5, the pulse shaper 16 and node 17 production pause between irrigations, containing evaporative capacity of 18, communicated through a connecting pipe 19 with irrigation pipe 2, a reversible electric motor 20, the magnetic contact 21 and the float level regulator 22.

The controller 6 is supplied with three 27 "the gray code binary code", transducer angle to the gray code and the reversing amplifier 29.

Node 17 production pause between irrigations provided with an intermediate capacity of 30 to accommodate the float level controller 22 mounted on the connecting pipe 19 between the irrigation pipeline 2 and the evaporative capacity of 18, made in the form of bellows, the upper fixed part which is the gladden fields aperture 31, is connected through a worm gear 32 to the shaft of reversible motor 20 and the lower movable part of the hosted system permanent magnets 33, driven by the like poles of adjacent magnets are opposite and mounted on vertical rods 34, attached to the outer surface of the evaporator bottom of the tank 18 and arranged to be movable in guides 35, moreover, the magnetic contact 21 is placed on the bottom of one of the vertical rods.

The output 36 of the transfer high-order bit of the first binary adder 8 is connected to a trigger input of the timer 24 and the first control input electrically operated shut-off valve 4, the second control input through which the magnetic contact 21 is connected to a power source 7, and th is oresti wind associated with the inputs of the first element And 13, which output and the second output of the timer 24 are connected, respectively, with the accounts and boleushim inputs binary pulse counter 25, and the outputs of the latter are connected with the first group of inputs of the second binary adder 26, a second group of inputs connected to the outputs of the inverter 27 "the gray code binary code inputs connected to the outputs of Converter "corner of the gray code", the entrance of which is kinematically connected with the shaft of reversible motor 20, and the control inputs of the latter through the reversing amplifier 29 is connected to the outputs of the second 14 and third 23 elements And, the first inputs of which are connected with the third output of the timer 24, and the second input with the output element, OR 12 inputs connected to the bit outputs of the second binary adder 26, the output of the transfer of the senior discharge of which is connected to the third input of the second element And 14 and through the element 15 with the third input of the third element And 23, and the input transfer LSB of the second binary adder 26 is connected to the block 11 signal logical units.

Automated watering system works as follows.

In the initial state of the system when the power supply electric controlled shutoff valve 4 C of the flexible wall is compressed. In this capacity 18 is supported in this position by a system of mutually-first annular permanent magnets 33. The rods 34 are rigidly connected with the bottom of the evaporative capacity of 18, are also raised, so the magnetic contact (reed switch) 21, attached to the end of one of these rods and located near one of the permanent magnets 33, is closed.

The voltage from the power source 7 through the closed reed switch 21 provides an opening of the electrically controlled shut-off valve 4 on the inlet line 1 and bringing through the pulse shaper 16 timer 24 to its original state. After the opening of the valve 4 starts watering, simultaneously with which the water filling the tank 18 site 17 production pause between irrigations through the chamber connected with it the intermediate tank 30, provided with a float level control 22 and mounted on the connecting pipe 19. Under the increasing weight flowing into the tank 18 water is stretching its corrugated flexible wall and the bottom of the tank goes down, overcoming the resistance of the mutually-first magnets 33. At a certain, predetermined amount of fill evaporative capacity 18 p can continue.

After issuance of plants, irrigation rates will be eliminated misalignment between the readings of the flow meter 3 and the block 9 production rate of irrigation water. At the output 36 of the transfer high-order bit of the first binary adder 8, a signal will appear as a logical unit, the launching of the timer 24.

Having engaged in the work, the timer 24 pulse from its first output resets the pulse counter 25, in which the power may be written to an arbitrary number. Then the momentum from his second exit (transition from the state of the logical zero state to the logical one), the timer 24 opens the first item 13, to the second input of which receives the pulses in a sequence of signals of the logical unit from the sensor 5 wind speed.

Position the petals toffee aperture 31 depends from the counter 25 and the inverter 27 "the gray code binary code associated through a transformer 28 "corner of the gray code" with the shaft of the motor 20. When there is a mismatch at the input of the second binary adder 26 at its bit outputs and the inputs of the OR element 12 will be a binary number containing the unit at least one of the digits. Therefore, the signal of the logic unit Bud the spine of the sign of the error at the output 37 of the transfer high-order bit of the second binary adder 26, the signal of the logic unit receives, due to the presence of the element 15, the third entrance or second 14, third 23 elements And. After appearing on the third output of the timer 24 signal of logical units on all three inputs of one of the two elements 14, 23 will be present signals of the logical unit. Thus, if the output 37 of the second binary adder 26 will signal the logical unit, then the same signal is on all inputs of the second element And 14, and in the presence of a signal of the logic zero at the output 37 signals of the logical unit will be present at all inputs of the third element And 23. Accordingly, the signal of the logic unit will appear at the output or second 14, third 23 elements, And reversing amplifier 29 will include the motor 20 to rotate in one direction or another.

For example, in the binary counter 25 from the sensor 5 wind speed was recorded 300 pulses (binary 100101100), and the position of the shaft of the motor 20 (at the outputs of the inverter 27 "the gray code binary code) is characterized by a number 312 (in binary form 100111000 and inverse 011000111). With regard to signal a logical unit at the input 38 of the switch LSB of the second binary adder 26, the outputs of poluostrova binary adder 26 and the rotation of the motor 20 in the negative direction (to the smaller opening of the diaphragm 31).

If the picture will have the opposite pattern, namely, the counter will record the number 312 (in binary form 100111000), and the position of the shaft of the motor will be characterized by the number 300 (in binary form 100101100 and inverse 011010011), then adding, we get:

100111000 + 011010011 + 11.000001100

Mark "1" to the left of point (at the output 37 of the second binary adder 26) will mean the motor 20 to rotate in the positive direction (to increase the openings of the diaphragm 31).

Changing the position of the petals toffee aperture 31 through the worm gear 32 witness way, moreover, the evaporation of water from the tank 18 is supported close to the real.

When the complete elimination of the error on all bit outputs of the second binary adder 26 and at all entrances element OR 12 will appear a signal of logical zero, which leads to a similar signal at the output of the OR element 12. Hence the signal of the logic zero is supplied to the second inputs of the second 14 and third 23 members, and with their outputs to the inputs of the reversing amplifier 29. The motor 20 is stopped.

If once again encounter the wind, then reappears Rasso the motor 20, which again turns on and changes the position of aperture blades 31. The higher the wind speed, the more is revealed aperture and increasing the rate of evaporation of water from the tank 18, reducing the duration of a pause between watering.

After the specified amount of water evaporates, the vessel wall 18 will be compressed by being pushed from below by a system of permanent magnets 33 when the switch 21 will approach one of them and closes. The signal from the power supply unit 7 through the closed reed switch 21 and the pulse shaper 16 provides a stop timer 24 and the opening of the electrically controlled shut-off valve 4, the pause is completed, a new cycle begins watering.

After issuing the new standards watering the plants at the output 36 of the first binary adder 8 again, a signal will appear as a logical unit, which leads to the opening of the electrically controlled shut-off valve 4 and start the timer 24 again starts pause, etc.

Thus, the node 17 determines the length of time between irrigations with high precision, which allows you to bring irrigation regime of plants to optimal, eliminating wastage of irrigation water and increasing the yield of irrigated crops by 20-30%

AUTOMATED IRRIGATION SYSTEM, containing Gadamer and electric controlled shutoff valve, the wind speed sensor and a controller including a power source, the first binary adder, bit inputs which are connected to the outputs of the flow meter and the unit production rate of irrigation water, and the entrance to "wrap" the Junior category is associated with a unit output signal of the logic unit, element, OR two elements, And the element is NOT, the pulse shaper and the node generation pause between irrigations, containing evaporative capacity provided through connection with irrigation pipeline, reversible motor, the magnetic contact and the float level controller, wherein the controller is provided with a third element, a timer, a binary pulse counter, a second binary adder, inverter gray code to binary code Converter angle to the gray code and the reversing amplifier and the node generation pauses between irrigations provided with an intermediate capacity to accommodate the float level regulator installed on the connecting pipe between the irrigation pipe and evaporative capacity, made in the form of bellows, fixedly mounted in the upper part of which is the gladden fields aperture connected through the worm gear shaft reversephone any poles of adjacent magnets toward each other, mounted on vertical rods attached to the outer surface of the bottom of the evaporation vessel and arranged to be movable in the guides, and the magnetic contact is placed on the bottom of one of the vertical rods, with the release of "Transfer" high-order bit of the first binary adder is connected to a trigger input of the timer and the first control input electrically operated shut-off valve, the second control input through which magnetopause contact connected to a power source, and through the shaper pulses to the input of the stop timer, and the first last and the output of the wind speed sensor are connected to the inputs of the first element And which output and the second output of the timer are connected respectively with the accounts and boleushim inputs binary counter pulses, and outputs the latter are connected with the first group of inputs of the second binary adder, the second input of which is connected to the outputs of the Converter to the gray code binary code inputs connected to the outputs of the transducer angle to the gray code, the entrance of which is kinematically connected with the shaft of reversible motor, and the control inputs of the latter through the reverse will strengthen the house of the timer, and second input with the output element OR inputs connected to the bit outputs of the second binary adder, the output of the Transfer of the senior discharge of which is connected to the third input of the third element And the input of the switch LSB of the second binary adder is connected to the AC signal of the logic unit.

 

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