SU1496717A1 - Apparatus for controlling multisupport frontal watering machine - Google Patents

Abstract

The invention relates to agricultural machinery and can be used in automation devices. The aim of the invention is to increase the uniformity of irrigation. The device consists of two channels, each of which consists of a track gauge and a control unit, in addition, there are a main timer, a correction timer and a course stabilization device. When the end car of the sprinkler car moves from the track meter 6, a signal is sent to element 2ILI 5 and then to the D input of the trigger, which causes 1 to appear at its forward output, 0 at the inverse. The electronic key opens, the intermediate relay 10 is turned on, and the carriage stops. In this case, a signal is received that the motion of the other extreme carriage is rarefied. After a specified time interval, a signal arrives at the C input of the second trigger, which sets 0 at its output. This 0 through the elements 2 OR 13, 14, 15 enters the D-inputs of the flip-flops and sets the control unit to its initial state. 2 Il.

Description

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The tracker and control unit, in addition, have a main timer, a correction timer and a course stabilization device. When the end car of the sprinkler car moves, the track meter 6 comes in. - a signal to element 2 OR 5 and then to the D-input of the trigger, which causes 1 to appear at its direct output, on the inverse - O. The electronic key opens, turns on relay relay 10 and trolley

stops. In this case, a signal is received that the movement of the other extreme carriage is diluted. Through a predetermined time interval, a signal passes to the C input of the second trigger.,. which sets Oh at his exit. This O through the elements 2 OR 13, 14i 15 enters the D-inputs of the flip-flops and sets the control unit to its initial state. 2 Il.

The invention relates to agriculture, namely to machines intended for irrigation of arid lands, and can be used in devices for the automatic control of the movement of wide-range front-loading sprinklers.

The aim of the invention is to observe the uniformity of irrigation.

Figure 1 shows the block diagram of the device; Fig. 2 illustrates the inclusion of the device in the electric drive control circuit of the end carriage.

The device contains a control unit .1 mounted on one of the extreme carts (for example, the left), and a control unit 2 installed on the other extreme carriage (for example, the right one), interconnected by wires 3 and 4. The control unit 1 serves as a dp of stabilizing the speed of movement of the end carriage and includes the first element 2 OR 5, the input of which is connected to the output by measuring 6 ways, and its output by the pulse input of the first trigger 7, the S and D inputs of the first 7 and second

8 flip-flops; connected to the + power source. The direct output of the first trigger 7 via an RC-filter (2, C) is connected to the base of the transistor 9, the emitter of which is connected to the power supply, and the collector, in whose circuit an intermediate relay 10 is connected, through a constantly closed contact 11 of which (FIG. .2) the winding of the relay for activating the drive of the end carriage 12 (e.g., the left one) is turned on, connected by wire 3 with the control unit 2 located on the other end carriage. The second element 2 ШШ 13 one of the inputs is connected to the inverse output of the first trigger

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7, its second input is connected to the inverse output of the second trigger 8, the output of the second element 2 OR 13 is connected to one of the inputs of the third element 2 OR 14, the other input of which is connected to the transistor collector of the second control unit 2 located on the other extreme carriage , right), the output of the third element 2 OR is connected to one of the inputs of the fourth element 2 OR 15, the other input of which is connected to the Set button. 16, the output of which is connected to the R inputs of the first 7 and second 8 flip-flops. Set button 16 is connected to the control unit 2. The pulse input of the second trigger 8. is connected to one of the outputs of the course stabilization device 17: the other output of which is connected in the same way to the control unit 2 installed on the other end of the trolley (for example, right). One of the inputs of the device 17 s: the rate stabilization is connected to the output of the main timer 18, and the other its input is connected to the outputs of the correction timer 19. Both timers are intended to form a positive impulse at the output after a certain standing time interval set by the operator, depending on the rate of irrigation. Moreover, the correction timer absorbs impulses more slowly than the main timer, for example, 4 times. This is necessary to level the sprinkler from (against the guide cable during correction).

The gauges 6 and 20 of the left and right wing paths, each connected to its own control unit 1 and 2, serve as I for measuring the path traveled by each 149671 wing of a sprinkler with a resolution of, for example, 25 cm.

Set button 16 is connected to the blocks 1 and 2 of the controls and the following for: setting them to their original position. The device 17 for stabilizing the course, one of the inputs of which is connected to the main timer and the other to the correction timer, one of its outputs is connected to the impulse input of the D-flip-flop 8 of the control unit 1, the other output is connected in the same way to the block com 2 controls, is used to switch its output from the main g timer 18 to the correction timer 19 in the correction mode and vice versa when the sprinkler correction mode is removed.

The relay for activating the drive of the end carriage 12 (either left or right) turns on the drive of the cart when the intermediate relay 10 is turned off and turns off the drive when the intermediate relay tO is turned on. 25

The device works as follows.

Before the sprinkler starts moving, the inverse outputs of D-flip-flops 7 and 8 contain logical 1, and at the direct output of D-flip-flop 7, logical O. Transistor 9 is closed, intermediate relay 10 is turned off, and the drive relay of the end support carriage 12 is turned off enabled through a permanently close contact 11 of the intermediate relay 10. “As soon as the trolley has traveled a certain distance, for example 25 cm, a signal is sent from the meter 6 to the logic element 2 OR 5 and then to the pulse input of the D-flip-flop 7, as a result its direct code It is a logic 1, and on the reverse - logical O. otkrshaets transistor 9, an intermediate relay 10 is turned and stopped trolley. The wire 3 receives the enable signal of switching on the other extreme carriage. At an interval of time set by the operator, which sets the irrigation rate, a signal from the timer 18 arrives at the pulse input of the D-flip-flop 8, as a result of which the logical O is set at its inverse output the presence of a decisive signal from another extreme truck through the logic elements

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2 OR 13, 14, -15 enters the R-BXO of the D-flip-flops 7, 8 and the control unit is reset. Thus, the cart continues its movement.

As can be seen from the above, the speed of movement of the extreme trucks of the sprinkler is stabilized. If for some reason one of the extreme carriages slows down and the signal from the timer comes earlier than from the track gauge, then the other extreme cart will stand for as long as the cart does not pass the set distance of 25 cm. But this can occur only in emergency mode, as the trolley speed is 1.8 m / min. The passage of the extreme mounts with a cart of 25 cm in 1 min corresponds to the most frequently used irrigation rate. The large i irrigation rate is not applied.

The economic effect of the proposed device is achieved: due to a more accurate maintenance of the required irrigation rate and an increase in the uniformity of irrigation, leading to an increase in the yield of agricultural crops; by reducing water erosion of the soil, leading to the efficient use of irrigated areas; by saving irrigation water and energy due to a significant reduction in corrections.

Claims (1)

Invention Formula A device for controlling a multi-support frontal sprinkler containing a power source, a course stabilization device, a main timer, distance meters installed on the left and right end carts, control units, a cad of which is associated with the drive mechanism of the corresponding extreme sprinkler car that, in order to improve the uniformity of irrigation, it is equipped with a switch with an open contact and a correction timer, the output of which is connected to the first input of the device a capturing course, to the second input of which the output of the main timer is connected, and each of the control units is made in the form of two D-flip-flops, four eleven Copies 2 OR, electronic key whose load is a relay coil and RC filter, with the C input of the first D flip-flop through the first element 2 OR connected to the distance meter of the corresponding extreme carriage, S and D inputs of the first and second D - triggers are combined and connected to the plus of the power source through resistance, the R inputs of both D flip-flops are combined and connected to the output: the fourth element 2 OR-, the first input of which is connected to the output of the third element 2 OR, the first input of which is connected to the output of the second element five  eight 2 OR, and the inputs of the latter are connected to the inverse outputs of the first and second D-flip-flops, respectively, and the second input of the fourth element 2 OR through the switch to the common terminal of the power supply, the direct output of the first D-flip-flop via an RC filter and an electronic switch the second input of the other control unit, and the second input of the third element 2 OR is connected to the output of another control unit, the corresponding outputs of the heading stabilization tool are connected to the C inputs of the second D-flip-flop of the corresponding control unit. / CpUl2