DESC:Field of Invention:
Present invention relates to an automated irrigation system. More particularly, present invention relates to an irrigation system wherein the irrigation system adjusts the flow and amount of water in field.

Background of Invention:
Various problems are associated with present irrigation system such as labor, water shortage, continuous monitoring and controlling along with decision making at various stages which are very tedious and time consuming.
Proper irrigation is very necessary for plant growth. Timer based irrigation controllers are known in art which can be manually programmed and thus schedules are made for different requirements of field, weather and farmer. However, such irrigation system suffers various disadvantages such as varying rate of water loss, user interruption and weather changes. As a result such timer based system does not utilize the water usage at optimal level.
Irrigation system are disclosed in US 8457799 discloses an automatic gated-pipe actuator for controlling flow of an irrigation material to an agricultural region through an irrigation gate in a gated-irrigation pipe. The automatic gated-pipe actuator includes a gate valve for coupling to the gated-irrigation pipe, a gate actuator removably coupled to the gate valve and for actuating the gate valve and an automatic gated pipe gate control unit for controlling actuation of the gate valve. The control unit has a processor unit communicatively coupled to the gate actuator. Upon instruction from the gate control unit, the gate actuator will actuate and alter the disposition of the gate valve thereby altering the flow of irrigation material through the irrigation gate and to a portion of the agricultural region adjacent the irrigation gate.
US 5251153 discloses a programmed irrigation controller automatically computes durations for, schedules, and controls split irrigation cycles at up to eight watering stations. The controller is manually entered with high-level information regarding soil type, terrain, and irrigation system watering head type, and also with a total irrigation time, for each station. The maximum "on" time duration for each individual split irrigation cycle, and a minimum "off" time duration, are determined from the high-level information input by table lookup. The controller computes the number of irrigation cycles at each station as its total irrigation time divided by its maximum "on" time duration. The controller schedules composite irrigation cycles for all stations so that no station overwaters within a single irrigation cycle or upon successive irrigation cycles that are too closely time proximate. Exclusionary time-of-day intervals that specify when no watering will occur can be inserted within the schedules. A water budgeting factor proportionately controls the numbers of split irrigation cycles. Special overlaid schedules provide useful special irrigation sequences/durations such as one-time deep soak, periodic deep soak, or syringe cycles. The programmed irrigation control for a single station may be copied for the control of additional stations.
US 7359769 discloses an irrigation control device with a controller, antenna, power supply and battery charging device, such as a solar array, all contained within a housing, such as a rotor body. The controller receives signals through the antenna. The controller updates one or more watering schedules stored in a memory module, based on the received signals, and generates control signals to execute a watering schedule. The battery charging device recharges the power supply and the irrigation control device requires no external electrical connections for power or control. Control signals are generated in a central controller remote from the rotor, and are preferably transmitted to the rotor antenna through a commercial paging or other type of public broadcast network.
There are also some cost effective irrigation system that calculate, update, adjust and provide a water schedule automatically based on information source available to the system through weather information and irrigation site-specific information to automatically apply the optimal irrigation schedule.
However, such systems are unable to calculate actual status of water requirements of different zones/segments of field and farmer’s command along with weather condition and faults.
Also known are advanced irrigation systems whereby a moisture sensing system provides feedback to the controlling unit that enough water has been applied to any particular zone. However, these types of system are mainly deployed in drip or sprinkler irrigation systems. Also the systems don’t act as autonomous units which can take their decisions by their own in case of faults, weather conditions and wrong decisions taken by farmer.
Indian environment and facilities demand better irrigation system. Thus, there arises a need for a smart flood irrigation system which once get commands from farmer through phone, internet or manually related to decisions such as selection of zones/segments for water supply and process repetitions for selected zones of field, it do rest of all irrigation activities automatically which completely remove continuous monitoring, decision making and control of irrigation process.
In this invention a smart flood irrigation system is developed based on the field of mechatronics which remove all human efforts related to continuous monitoring, decision making and controlling the flood irrigation process. From the context of agriculture based country like India, the care is taken for system installation cost, robustness, effectiveness, low energy consumption and simplicity along with specialty.
According to the present invention, farmer can flexibly utilize the irrigation system by changing/updating his decisions/commands from any part of world at any point of time whether an irrigation process is already going on or not. The system provides current water requirement status of different segments of field, on basis of this information the farmer decides which segments are to be irrigated and number of times the process is to be repeated. Once farmer gives command via mobile or internet or manually, rest of things related to flood irrigation are carried out automatically. In case of emergency like in case of rain or water leakage in any segment or any fault in valve or other component of system, the farmer will be informed by system and unless and until farmer don’t reach his farm, suitable actions are taken by system to run irrigation process smoothly. The system comprises of microcontroller, data receiver and transmitter, signal interfaces, sensors and user interfaces for both manual and remote control. For irrigation process system uses commands from farmer as well as field
The invention of instant invention provides following advantages:
• No need of continuous monitoring and controlling the irrigation process, so it will save farmer’s time and also reduces human fatigue.
• Eliminates human labor, so reduces farm labor cost and efforts.
• It saves water because system is so smart that in any of possible cases it will not supply water more than requirement.
• It helps in proper crop yield because plant health depends on a properly designed irrigation system supplying enough water.
• Complete irrigation process can be monitored and initiated from any part of world.
• In case of any fault at any stage, the appropriate steps would be taken by system itself and farmer is also informed about the fault.

Summary of Invention:
The following summary is provided to facilitate an understanding of some of the innovative features unique to the disclosed embodiment and is not intended to be a full description. A full appreciation of the various aspects of the embodiments disclosed herein can be gained by taking into consideration the entire specification, claims, drawings, and abstract as a whole.

It is, therefore, an aim of the disclosed embodiments to provide for smart irrigation system 100 for irrigating plurality of segments, comprising:
a microcontroller Unit 101,
at least one power source 102,
a communication device 103,
at least one sensor 104 for each segment,
a slide gate valve 105, wherein the slide valve 105 is present at gate 106 of each segment 107, and water flows into each segment 107 in a controlled manner.
Yet according to an embodiment of the invention, the plurality of segments 107 comprises different crops with different need of water requirement.
Yet according to an embodiment of the invention, the power source is electric, through battery, or through solar.
Yet according to an embodiment of the invention, more than one sensor can be employed in each segment selected from rain sensor, moisture sensor, water level sensor.
Yet according to an embodiment of the invention, a pipeline which provides water to each segment has three valves sequentially arranged in pipeline providing water to segments.

Brief description of Drawings:
The summary above, as well as the following detailed description of illustrative embodiments, is better understood when read in conjunction with the appended drawings. For the purpose of illustrating the present disclosure, exemplary constructions of the disclosure are shown in the drawings. However, the disclosure is not limited to specific methods and instrumentalities disclosed herein. Wherever possible, like elements have been indicated by identical numbers.

Figure 1: schematic diagram showing components and arrangement of the irrigation system of present invention;
Figure 2: is a flowchart illustrating the process steps of the functioning of the irrigation system;
Figure 3: is a schematic diagram showing power supply in case of irrigation with water pump according to an embodiment of the invention;
Figure 4: is a schematic diagram showing power supply in case of irrigation through canal water cum water pump/Sprinkler irrigation/ Drip irrigation/Mechanical Move Irrigation;

It will be appreciated that variations of the above disclosed and other features and functions, or alternatives thereof, may be desirably combined into many other different systems or applications. Also that various presently unforeseen or unanticipated alternatives, modifications, variations or improvements therein may be subsequently made by those skilled in the art which are also intended to be encompassed by the following claims.

Although embodiments of the current disclosure have been described comprehensively, in considerable detail to cover the possible aspects, those skilled in the art would recognize that other versions of the disclosure are also possible.

Fig 1 discloses smart irrigation system 100 for irrigating plurality of segments, with all its essential components. Microcontroller Unit 101, a power source 102, communication device 103, a sensor 104, slide valve 105, wherein said slide valve 105 is present at gate 106 of each segment 107, and water flows into each segment 107 in a controlled manner.
Sensors can be connected to central control unit using Wireless Sensor Networks (WSNs) or using a wire-network. Current diagram shows the wire network of Smart Irrigation System A live wire L1 is present for clockwise motion of slider valve motor. Similarly, a live wire L2 is present for anti-clockwise motion of slider valve motor. N is a common neutral wire. R indicates relay. Various sensors are present such as Sc to sense whether canal has water availability. Vc is main slide valve for canal water. Considering “x” number of segments, Vx indicates slide valve in xth segment. Similarly sensors is xth segment are represented by Sx. A1 is an automatic motor starter.

There are various ways for supplying water for flood irrigation system. Some conventional methods known in art includes supplying water to field through a water pump, or through a ditch storing water or supply coming from a canal or a river.
The system of present invention can be controlled manually or automatically through a tele mode.

Farmer may select manual operation of the irrigation system when he is physically present on farm. Said manual selection shall herein refer to as “manual mode”. The farmer selects the segments amongst plurality of segments to be irrigated by choosing desired options in form of “push buttons”, or through a touch pad, or a DIP switch or any other manner known to a person skilled in art, to opt for a function.

According to an embodiment of the invention, when the telemode is switched on and the farmer switches on the power, then by default settings, the system will work on the telemode.

According to an embodiment of the invention, in manual mode, if farmer has powered on the MCU (Micro-controller Unit), then if he want to carry on process only once, then he will deselect the manual mode and for future use, he can activate tele mode in advance. The irrigation process repeats from first segment, once all segments have been irrigated. Therefore, system automatically repeats the process. For repetitive process, the manual mode must be remained activated.

The telemode switch is selected by the farmer. In this case it does matter whether -manual mode is activated or not. In this case, the farmer makes a phone call to the system which will be automatically received and then he will select the segments which are to be watered. For this, DTMF technology is used. A DTMF decoder is attached to microcontroller. On making a phone call, the phone call is automatically received. Now whatever key is pressed, a sound is generated with dual frequencies corresponding to pressed key which is converted into digital signal with the help of DTMF decoder. In cell phone keypads, there are separate sounds (so separate dual frequencies) for separate keys. For example, if key 2 is pressed, then a sound is generated and this sound through mobile audio jack is transferred to DTMF decoder. Decoder convert this sound to binary signal as 0010 (i.e. 2 is converted to digital signal). Programmed microcontroller considers this sounds as 0010 as an input command signal. Brief introduction of system elements is as following:
Micro-controller Unit (MCU) 101 receives inputs from sensor 104, switches for selecting manual mode and tele mode, mobile phone, DTMF decoder, real time clock (RTC). and control the various outputs governing separate interfaces and tasks like valves, relays etc. According to instant invention, MCU 101 is selected on the basis of number of input/output pins required, interfaces required like relays Data-multiplexer, Dual H-bridge and the kind, memory requirement, the number of interrupts required and processing speed required. The programming can be understood by flow diagram as shown in fig. 2 wherein number of segments is “N”. Where tx is time taken in xth segment to irrigate and Tx is estimated time of proper irrigation in xth segment and V1, V2……..Vn are different valves in separate field segments. There will be a feedback mechanism which will provide the field water requirement status for all segments to farmer through a message. Also in case of surface/flood irrigation where slide valves are coupled with pivoted bar mechanism for water flow detection ensuring proper feedback, make farmer capable of knowing the exact status of progressive irrigation process at any time through his mobile phone.
Figure 2 shows the flowchart showing operation of system of present invention, in both telemode and manual mode. The microcontroller can be instructed to operate via telemode or manual mode. In manual mode 7, user selects the segments and further decides other important points such as number of times for which process is to be carried out manually on his farm field by available segment switches for different segments at location of central control unit. According to telemode 8 user gives same command as mentioned in manual option, but this time commands are given remotely via his mobile. Beside this selection of manual 7 and telemode 8, rests of all activities are similar in both modes.
As shown in Figure 2, 71 shows Taking inputs manually, i.e. selection of segments and nature of process (single/repetitive).
In case anyone of the selected segments does not have water requirement, then command is reverting back to 71-1, i.e. in 'No' condition, command is not going to step 71-2 (which starts water pump or other main water supply). So command is going to step 71-2, only in case if statement of step 71-1 is true, i.e. in 'Yes' condition.

t is the actual time for which water is supplied to a particular segment and T is maximum preset time limit for irrigation for corresponding segment. Suppose in farm field, system is in telemode, then in this case farmer will make a phone to the system. Now he has option whether he wants to carry out the irrigation process as per schedule for one time process or in repetitive manner.
Suppose key ‘0’ of mobile keypad is assigned for single time process. So now user has to select segments from his mobile keypad. Say there are total 20 segments (n=20) in farm field and he wants to irrigate segments 1,2,3,8,9 and 10 only for once. So after receiving of phone call by system, user will press ‘ 1 #’, ‘2#’, ‘3#’, ‘8#’, ‘9#’ and ‘10#’ . After this he will press ‘0’ for single time irrigation process and terminate phone call. Now controller checks the requirement of water in all desired segments (1, 2, 3, 8, 9 and 10 out of all 20 segments). If all these desired or selected segments have already water as per requirement, then controller will get active high signal from segment sensors and thus pump or main water supply will not be opened as shown in 71-4 (manual mode) and 72-4 (telemode). But if at least one of these selected segments, have water requirement, then main water supply or pump will automatically turned on by controller by opening of valve as shown in 71-3 (manual mode) and 72-3 (telemode). After this controller checks for given command and actual water requirement in segment 1. If initial command is given for segment 1 for irrigation and also there is need of water in segment 1, only then valve of this segment 1 will be opened otherwise not. Now if valve of segment 1 is open, then the time of irrigation process for segment 1, which is time ‘t1’, is counted. Also there is a maximum preset time limit ‘T1’(based on farmer’s experience) for segment 1, which can never be exceeded in irrigation process in in segment 1. For example, suppose a farmer knows that it generally takes 2 hours to irrigate segment 1 without any fault, so we can take maximum preset time limit as 2.5 hours ( with offset of half an hour). Now controller waits for active high signal from water level sensor or moisture sensor deployed in segment 1 and if this signal generation takes more than ‘Tx’ time, then it means there is some fault and so controller generates an output signal for alarm as well as for sending message to farmer via GSM module. Now if in segment 1, net irrigation process time ‘t1’ is less than or equal to maximum preset time limit of segment 1 i.e. ‘T1’, then it means everything is right and controller sends output signal to valve for its closing. Now whatever steps controller followed for segment 1, same will be followed for segments 2, 3, 4, 5……….19 and 20 (nth segment /last segment). After following all desired steps in nth ( say n=20) segment similar to segment 1, the main water supply source or water pump is turned off as shown in 71-10 (manual mode) and 72-10 (telemode) and alarm is generated as well as a message is sent to farmer via GSM module as shown in 71-9 (manual mode) and 72-9 (telemode) indicating the completion of irrigation process for single time.
Now in case of repetitive mode, everything will remain same as in case of above mentioned single time process, except that this time complete irrigation process of single time will be repeated as many times as per initial commands given by farmer for process repetition.
Whatever we explained was for tele-mode. Everything will remain same in manual mode, except that in manual mode initial commands related to selection of segments and repetition of process, are given to controller manually by farmer with help of available segment selection switches at location of controller.

From the level sensors deployed in different segments of field, microcontroller gets information in form of active high or active low signal for each segment. This information can be seen directly on display interfaced with microcontroller or it can be sent to farmer’s mobile phone with the help of GSM module interfaced with microcontroller.
Also in case, if farmer gives commands without knowing the actual field water requirement (i.e. without any feedback), still system will not supply water to those segments of field which does not have need of water.

From the level sensors 102 deployed in different segments of field, microcontroller 101 gets information in form of active high or active low signal for each segment. This information can be seen directly on display interfaced with microcontroller 101 or it can be sent to farmer’s mobile phone with the help of GSM module interfaced with microcontroller 101.
Also in case, if farmer gives commands without knowing the actual field water requirement (i.e. without any feedback), still the system of present invention will not supply water to those segments of field which does not have need of water.
Microcontroller Unit 101 needs continuous power in order to do continuous monitoring and controlling. Also the sensors 102 and valves also need power, so selection of a continuous power source 102 is very important and is selected on the basis of type of irrigation system, for example:
Case 1-Flood irrigation through water pump
Case 2- Flood irrigation through canal water cum water pump/Sprinkler irrigation/ Drip irrigation/MMI

Farmers in India face a severe problem of power cuts and limited supply of electric power in remote rural areas. Accordingly system of instant invention has been designed so as to operate under conditions of power supply from Mains (as shown in Fig 3) and in case of power cut from Mains (as shown in Fig 4).

In an embodiment of invention, pump is electric power operated, so only backup required is for microcontroller unit 101 because sensors and valves can get power directly from main power supply whenever available (Functions of sensors/valves are required only when there is electricity). The power source arrangement can be understood from Fig. 3. Main power supply 301 supplies power to an adaptor 302 such as a 6V adaptor and to a battery charger 304 which charges rechargeable battery 303 such as a rechargeable 6V battery. The Microcontroller Unit 101 may receive power from adaptor 302 or rechargeable battery 303. Rain sensor 104 receives power from rechargeable battery 303.
As shown in Fig. 3, microcontroller unit 101 receives power main power supply in case of availability of main power supply.
According to an embodiment of the invention, in case of power cut microcontroller unit 101 receives power from an inverter 402 being charged from main power supply 301 when available.
According to an embodiment of the invention, the main power supply 301 can be obtained from solar panels 401 through sun light. Level sensors 405, moisture sensors 406 and Valve 105 may receive supply from the Inverter 402.
According to an embodiment of the invention, provision for both solar panels and electric power from Mains is provided, and it is upto choice of user that which power source he would like to employ.
Yet according to an embodiment of invention, slide gate valves are present in pipeline which provides water to field segments to control pressure of the water. In a preferred embodiment, there are three slide gate valves within the pipeline in between each segment.
Communication device 103 used in the system of present invention is DTMF (Dual Tone Multiple Frequency) decoder/receiver IC like HT9170B and GSM (Global System for Mobile communication) module such as SIM 300. DTMF signal is used for telecom signaling over analog telephone lines in the voice frequency band between telephone handsets and other communication devices 103 and switching center. The switching center is the centerpiece of a network switching subsystem (NSS) which is mostly associated with communications switching functions, such as call set-up, release, and routing. DTMF is a method of instructing switching system of the telephone numbers to be dialed or to issue command to switching systems. In DTMF the multiple tones are the reason for calling the system multiple frequencies. In this system tones are decoded by switching centers to determine which keys are pressed and accordingly the control and commands are given to remote system. Similarly GSM module enable user to control the system by sending messages or making a phone call. The system is programmed such that it sends messages to the user to alert or inform about the status of the running system. In this case a separate GSM module rather than a mobile phone is interfaced with M.C.U. 101.
Water level sensors 104 can be integrated with central control unit either through wireless sensor network or through a wire network. According to an embodiment of the invention, sensors need not necessarily be wireless. If there are ‘n’ numbers of field segments/zones which are to be attached with smart irrigation system, then numbers of separate wire connections required can be calculated as:
Total wire connections=Common wire to all sensors + signal wires from sensors + common wires to valves + Control wires for
Valves
= 1 + (n+1) + 2 + n = 2n + 4
AC transmission through wires are preferred over DC transmission in order to communicate with sensors and in order to control movements of slide valves because in case of DC signal transmissions, there are more signal losses and thus have less signal transmission reliability and also the cost of DC signal processing and wiring is more as compare to that of AC transmissions. The cost of wiring can be reduced by use of wireless sensor networks and by use of self-powered remotely controlled slide valves. Other advantage of using wireless sensors is their portability along with the fact that most of the wireless sensors have signal conditioning and processing units installed at the location of the sensors and transmit signals in the digital form. As a result, noise pick-up becomes a less significant problem. Moreover, since wires are deleted from the transmission, reliability of signal transmission is enhanced.

Selection of sensors 104 depends upon type of irrigation system. For flood irrigation system, a vertical float reed switch can be used as a level sensor.

When the reed switch is placed in a magnetic field, the gate is closed. The reed switch is ideal for moist and marine environments where it can be submerged in fuel or water. Reed switches are also widely used in dirty and dusty atmosphere because they are sealed tightly. In flood irrigation system float reed switch can be switched, as a level sensor.

In case of irrigation systems like drip, sprinkler and MMI systems, moisture sensors are used instead of level sensors.
Rain sensors may also be used to inform the farmer when there is rain on his farm which helps him taking decisions for current or future irrigation planning.

Slide valve 105 is used to control the movement of gate placed on entrance of segments. In traditionally used solenoid valve, there is continuous use of electricity in keeping valve open for a required period of time which consists of significant power consumption. So in order to reduce power consumption, motorized valve is used which need electricity supply only for few seconds (say 5-10 seconds) which is required only during valve opening and closing. This section will describe the specially designed motorized linear guide slide valve which is designed such that there exist:
• Minimum friction during sliding by reducing area of contacts under sliding motion
• Minimum corrosion
• Low cost of material and manufacturing
• Low power consumption by electric motor
• Manual and automatic control of slide valves
• Easy maintenance and high dispatch ability in each link of valve
The slide gate valve comprises: a motor for moving a slider gate which moves across a valve opening, a slider gate accommodated between the valve casing; a slider driver arranged on edges of the slider gate; a linear guide along each edges of valve casing; a seal provided alongwith each edges of the casing; a seal carrier arranged alongwith each seal towards the inner side of the casing; wherein the slider driver are connected with the linear guides to move along the edges of the valve casing alongwith directions of linear guide; and wherein the slider gate slides over the seal.
Experiments:
To get optimum thickness of slide in order to optimize the cost and reducing water leakage due to deformation in slide, with analysis software and conclude that optimum thickness of slide as 2.36 mm. By considering allowances, thickness is taken as 2.5 mm. To get optimum thickness of slide, consider following boundary and loading conditions:
1. Water flow rate (max.)=1800 liters/minute=0.03 m3/s
This flow rate is obtained at head of 240 feet and at power rating of 45 HP of water pump, generally pump has discharge of 1800 liters/minute and in most of farms in country like India; farmers have pumps with lower flow rate as considered by us. According to catalog of Kirlosker submersible pumps, then for model KS8B-4504 (45HP), then performance chart obtained is as follows:

99 97 93 86 80 73 67 59

As the pump is of 45 HP and head is 73 m (240 feet), so on this condition following results are obtained:
discharge Q= 1800 l/minute= 0.03 m^3/s.
Diameter of valve=10”
Cross-sectional area of valve (A) =.05067 m2
Flow velocity (v) =Q/A= 0.592m/s
Pressure on inside wall of slide due to flow velocity=1/2?v2 =175.2 Pa
Also assuming that there are no frictional losses in flow of water which increases the Factor Of Safety (F.O.S) of valve and thus design is more safe and reliable. So considering all losses, then discharge velocity will decrease and thus less pressure on slide’s wall, ingso in that case thickness of valve will reduce. Boundary and loading conditions on slide gate.

By using proper analysis software structural analysis are obtained for the slide gate for above mentioned material and other boundary and loading conditions and obtained test readings of deformations and stress are plotted in graph as given below in Fig. 5. By using these readings, a graph is plotted between results obtained for different thickness values of slide gate and 2.36 mm value is obtained as optimum thickness of slide gate. Below this thickness, there will be more deformation due to inside pressure and above it, mass of slide will increase which is not desired for accepted level of deformation (1.7×10-5m).
Reading of Slide Thickness Test
S. No. Slide thickness (mm) Maximum total deformation (×10^-5m) Maximum equivalent stress (×10^5Pa) Maximum principle stress (×10^5Pa) Maximum shear stress (×10^5Pa) Mass (kg)
1 6.35 0.092 1.687 2.348 0.853 4.572
2 5.08 0.185 2.609 3.6506 1.3227 3.6576
3 4.23 0.319 3.7234 5.2312 1.8923 3.048
4 3.63 0.505 5.0391 7.0989 2.5679 2.6126
5 3.175 0.754 6.55 9.2526 3.3499 2.286
6 2.82 1.0739 8.2696 11.691 4.2383 2.031
7 2.54 1.4725 10.182 14.414 5.2333 1.8288
8 2.31 1.9534 12.268 17.385 6.3222 1.6642
9 2.12 2.5429 14.6 20.7 7.54 1.524
10 1.95 3.2323 17.1 24.278 8.8579 1.4068
11 1.81 4.035 19.8 28.129 10.28 1.3063
12 1.69 4.9635 22.69 32.26 11.8 1.2192
13 1.5875 6.0229 25.8 36.67 13.441 1.143
14 1.494 7.2234 29.06 41.361 15.182 1.0758
15 1.41 8.5733 32.532 46.327 17.029 1.016
16 1.3368 10.083 36.2 51.57 18.984 0.9625
17 1.27 11.758 40.056 57.094 21.043 0.9144
18 1.21 13.626 44.14 62.942 23.228 0.87
19 1.15 15.647 48.347 68.966 25.481 0.83127
20 1.1 17.877 52.779 75.316 27.86 0.79513
21 1.058 2031.1 57.4 81.94 30.345 0.762
22 1 2295.5 62.216 88.838 32.935 0.73152

,CLAIMS:We Claim-
1. A smart irrigation system for irrigating plurality of segments, comprising:
a microcontroller unit,
at least one power source,
a communication device,
at least one sensor for each segment,
a slide gate valve, wherein the slide valve is present at gate of each segment, and water flows into each segment in a controlled manner.
2. The system as claimed in claim 1 wherein the plurality of segments 107 comprises different crops with different need of water requirement.
3. The system as claimed in claim 1 wherein, the power source is electric, through battery, or through solar.
4. The system as claimed in claim 1 wherein, a rain sensor can be employed at the location of microcontroller unit and a moisture or level sensor, depending upon type of irrigation system, can be employed in each segment.
5. The system as claimed in claim 1 wherein a pipeline which provides water to each segment has three valves sequentially arranged in pipeline providing water to segments.