Claims:CLAIMS
We claim:
1. an IoT based system to control and monitor the alternating current (AC) submersible motor pump wherein the motor is controlled using the android-based user interface mobile application on Blynk app cloud, the system comprising:
Arduino Uno board based on ATmega328P microcontroller with Wi-Fi module for providing connectivity of the microcontroller to the Blynk cloud server consisting of 14 digital input/output pins out of which 6 pin gives PWM outputs and 6 analog inputs, 16 MHz ceramic resonator, USB port, power pin, ICSP header and a reset button;
three-phase solid state relay (SSR) used for controlling the electrical load;
three-phase auto switch to check whether the three-phase supply is proper or not and if the supply is proper then it consecutively turn ON the three-phase motor starter which subsequently turns the three phase AC submersible motor pump ON;
three-phase motor starter which is an electromagnetic motor starter used to control the power supply of three phase AC induction motors; three-phase submersible motor pump equipped with the three phase AC motor to suck the water from well or bore well and out the water;
ESP8266 Wi-Fi Module with built in system on chip (SOC) with integrated TCP/IP protocol stack for Wi-Fi network access on microcontroller;
Three phase AC voltage sensor having three phase AC voltage transducer operated on 12V/24V DC voltage and three phase power supply (440VAC) taken as input and generate 0-5V/0-20mA/4-20mA DC as output signal;
mobile application providing user interface to the user for accessing the system and ON/OFF the motor using the system which further displays the status of the motor;
Blynk cloud server which is used to provide connection between mobile application and microcontroller and pass on the command from the mobile application to microcontroller, manages all the connection and data exchange between the hardware, Blynk Cloud, and mobile application.

2. The system as claimed in claim 1, wherein the Arduino Uno board may be connected to the computer for power supply or data transfer through USB cable via USB port.

3. The system as claimed in claim 1, wherein the Arduino Uno board may be connected to the power supply through battery via AC to DC adapter.

4. The system as claimed in claim 1, wherein the solid-state relay (SSR) is a semiconductor switch further comprising optoisolator (optocoupler) having one or more infrared light emitting diode or LED light source and a photo sensitive device.

5. The system as claimed in claim 4, wherein input and output in SSR is separated using optoisolator and when a current passes through the LED, LED glows and light is focused on the gap of photo transistor which indirectly turns the solid-state relay ON.

6. The system as claimed in claim 1, wherein mobile application for the android mobile is developed on Blynk App IoT platform for controlling three phase motor using ON/OFF switch button which can communicate with Arduino by dragging a widget and configuring a pin.

7. The system as claimed in claim 1 wherein the Blynk App cloud server is used to authenticate device using device authentication token sent on registered mail-id which is generated at the time of creating a mobile application.

8. The system as claimed in claim 4, wherein three phase AC input (30-480 VAC) is given to relay and same output (30-480 VAC) is generated when opto-coupled SSR is turned on using low voltage signals (3-32 VDC) which is connected to microcontroller and operated using mobile application, this low voltage signal is used to illuminates the LED light source.

9. The system as claimed in claim 1, wherein three-phase AC electric power is used to transmit electric power which is a polyphase system used to power the motor.

10. The system as claimed in claim 1, wherein the mobile application also displays the three phase AC voltage phase wise sensed through three phase AC voltage sensor.

Date: 01/11/2021

Dr. Kailash Chandra Bandhu
(Applicant)
, Description:IoT Based System to Control and Monitor Three Phase Alternating Current Submersible Motor Pump using Blynk App Cloud
FIELD OF INVENTION
[0001] The present invention relates to the Internet of Things (IoT) sensors and monitoring of submersible motor. The field of the invention is to provide a method and system to control three phase alternating current (AC) submersible motor.
[0002] More particularly, this present invention relates to the field of providing an IoT based system to control and monitor three phase alternating current submersible motor using Blynk application.

BACKGROUND & PRIOR ART
[0003] The subject matter discussed in the background section should not be assumed to be prior art merely as a result of its mention in the background section. Similarly, a problem mentioned in the background section or associated with the subject matter of the background section should not be assumed to have been previously recognized in the prior art. The subject matter in the background section merely represents different approaches, which in-and-of-themselves may also be inventions.

[0004] The about 58% population of the world is primarily depending on the Field of Agriculture. Without irrigation the farming and agriculture won’t be possible. The farmer facing the problems of frequent power cuts and abnormal voltage condition due to this they want to operate their three phase AC submersible motor to watering the crops from their home. By the introduction of submersible motors for irrigation purpose, farmers start their motors using starters by physically pressing the start button and after that some solutions are presented such as start the motors automatically after one minutes of power supply on by connecting auto starter and GSM/SMS based system is developed to on and off the motors using GSM calling or SMS. But there is no such system available which can control and monitor the three phase AC submersible motor using the technology on the go from where they want.

[0005] Now, the conventional method that are used for starting motor is very inconvenient and farmers need to spend a lot of time in irrigating the farms only due to unregulated power cuts and voltage fluctuations. They need to indulge in the farms only while irrigating their field due to the uncertainty in power cut and voltage fluctuations. Hence, there is no such system which can help the farmers to start the three-phase submersible motor from their home and from any place of the world using their mobile phones. Hence there is a need of the time to use the technological advancement for starting three-phase submersible motor using their mobile phones from anywhere in the world conveniently.

[0006] One such technology which is used for capturing parameters dynamically and perform automation is Internet of Things (IoT). Internet of things (IoT) is a combination of spatially distributed smart objects which have sensing capabilities and embedded identification through RFID technology. Specifically, the integration of sensors, RFID tags, and communicating technologies forms the network of IoT. It addresses the traceability and controllability of smart objects. It is a future vision through which digital and physical objects can be interlinked and intercommunicated to provide some domain specific services. IoT transforms real world objects into smart objects which can sense the environmental physical quantity and communicate it accordingly.

[0007] Hence, there is a need of the time to develop a system with the use of the technology so that farmers can make their life easy to start the three-phase motor pump through their mobile application without miss call and SMS. There is a need of a system which can control and monitor the three phase AC submersible motor using mobile application (Android/IOS) which is based on Internet of Things (IoT). By designing and implementing of such system the farmer can operate and monitor their three phase AC submersible motor from their Android/IOS application any time. There is a need of a system that can also monitor how much time motor was on and motor is watering or not. This kind of system will save the money and time of farmers. There are various prior arts that aim to resolve the issue of developing such a system which are discussed below:

[0008] Rakesh Makode et al: “IOT Based Automation and Monitoring of Induction Motor”, International Journal of Innovations in Engineering and Science, Vol. 4, No.7, 2019, developed an IOT based system using ATMegha328 Microcontroller and motor which exchange the information between the user phone and motor in forms of message and protect the motor against over current, dry run and single phase.

[0009] S. Potturi et al, "Critical Survey on IOT Based Monitoring and Control of Induction Motor," 2018 IEEE Student Conference on Research and Development (SCOReD), 2018, discloses implementation of IOT system to monitor and control the induction motor for different applications which includes electric vehicles, industries, agriculture field etc. This survey presents the block diagram of IOT based monitoring and controlling the induction motor proposed by different authors. The induction motor parameters can be monitored remotely such as temperature, speed, current and voltage etc, and sent to the processing unit for analysis for taking necessary action in case of abnormal condition for better reliability and efficiency. The data is accessed through Wi-Fi anywhere in the globe.

[0010] Rahman A. et al, “IoT Based Bidirectional Speed Control and Monitoring of Single Phase Induction Motors” In: Vasant P., Zelinka I., Weber GW. (eds) Intelligent Computing and Optimization. ICO 2020. Advances in Intelligent Systems and Computing, vol 1324. Springer, discloses design a prototype which consists of two single phase induction motors demonstrate multi motor control. The motors turn ON and OFF by a relay and achieve the desired motor speed by applying the stator voltage control method using Pulse Width Modulation (PWM) techniques. The magnetic field of stator is reversed by swapping the auxiliary winding contacts by relay for reversing the rotating direction of induction motors. When the desired value for specific operation is submitted from the designed website then desired control signal is generated by programmed microcontroller according to the command given by user through web server using GSM communication. The IR sensor is used to measure the motor status data and remotely observed using monitoring panel integrated with a web application. The result shows the small difference as compared to direct field measurement. This system can be used to continuously track, control and monitor the machine, goods and plants etc.

[0011] Karampuri, Ramsha, “An Indigenously Developed Gate Driver Circuit for Three-Phase Smart Inverter Operated with Internet of Things”, 2019, developed a native system for three phase inverter feeding power to the three-phase induction motor. The developed system can be operated and controlled manually by speed setting / by remotely using the IoT. The drive consists of three phase inverter which is consist of IGBTs and heat sink and driver circuit designed which the help of simple and low-cost ICs and other passive components along with the controller with Wi-Fi support.

[0012] NU Rani et al, “IoT Based Project for Submersible Motor controlling, monitoring, & Updating Parameters to Central Server with Free Rtos”, System, vol 4, issue 6, 2017, designed the electronics hardware with help of ATMega microcontroller, existing submersible pump and updated the parameters to server. Also monitor the alternating voltage, alternation current, temperature. The control system with controlling features like dryness, short circuit, overload, advanced sensing water tank controller which makes the motor to run in healthy mode and save the motor from burnout during short circuit.

[0013] Sindhura P. et al, “Agriculture Field Motor Control System Based on IOT”, International Journal for Research in Applied Science and Engineering Technology 2017 Vol. 5 No. 3 pp. 890-894 ref.8, discussed about how IoT is provides the optimal irrigation by monitoring the water level on regular interval from mobile device or personal computer. The farmer works hard in day and night for very good yield result from their form and they live in villages and villages are backbone of the nation. Presently many real time applications connected to internet and provide the facility to customer for monitor from anywhere in the world. These applications based on client server model and it uses TCP, UDP, HTTPS protocols and many embedded applications are coming under this model. The large amount of data sent to web server using GPRS/Wi-Fi.

[0014] Besides this, there are various prior arts in the state of the art that claims to resolve the problem of providing the solution to start the motor from anywhere in the world but none of the prior art provide complete solution to the problem. Further, none of the cited prior art available which can control and monitor the three phase AC submersible motor using mobile application (Android/IOS) which is based on Internet of Things (IoT) sensors. None of the prior arts provides a system so that the farmer can operate and monitor their three phase AC submersible motor from their Android/IOS application any time. There is also need of a system that can also monitor how much time motor was on and motor is watering or not. The proposed system will save the money and time of farmers.

[0015] Groupings of alternative elements or embodiments of the invention disclosed herein are not to be construed as limitations. Each group member can be referred to and claimed individually or in any combination with other members of the group or other elements found herein. One or more members of a group can be included in, or deleted from, a group for reasons of convenience and/or patentability. When any such inclusion or deletion occurs, the specification is herein deemed to contain the group as modified thus fulfilling the written description of all Markus groups used in the appended claims.

[0016] As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictate otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.

[0017] The recitation of ranges of values herein is merely intended to serve as a shorthand method of referring individually to each separate value falling within the range. Unless otherwise indicated herein, each individual value is incorporated into the specification as if it were individually recited herein. All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context.

[0018] The use of any and all examples, or exemplary language (e.g., “such as”) provided with respect to certain embodiments herein is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention otherwise claimed. No language in the specification should be construed as indicating any non-claimed element essential to the practice of the invention.

[0019] The above information disclosed in this Background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not form the prior art that is already known in this country to a person of ordinary skill in the art.

SUMMARY OF THE INVENTION
[0020] Before the present systems and methods, are described, it is to be understood that this application is not limited to the particular systems, and methodologies described, as there can be multiple possible embodiments which are not expressly illustrated in the present disclosure. It is also to be understood that the terminology used in the description is for the purpose of describing the particular versions or embodiments only and is not intended to limit the scope of the present application. This summary is provided to introduce concepts related to providing a system for monitoring and controlling the alternating current submersible motor pump using Blynk app cloud and the concepts are further described below in the detailed description. This summary is not intended to identify essential features of the claimed subject matter nor is it intended for use in determining or limiting the scope of the claimed subject matter.

[0021] The present invention mainly solves the technical problems existing in the prior art. In response to these problems, the present invention discloses a system for monitoring and controlling AC submersible motor pump using Blynk app cloud. Blynk App is used for creating the mobile interface for accessing the system in mobile device and Blynk library for making connectivity between mobile application and microcontroller ATMegha328P through Blynk cloud server because Blynk library uses IoT communication protocols. With Blynk, one can create smartphone applications that allow to easily interact with microcontrollers or even full computers such as the Raspberry Pi or ATMegha328P microcontroller. Blynk is a kind of platform for the development of smartphone applications that works with the wide range of microcontrollers. There is no programming needed to develop smartphone applications for interfacing various kinds of microcontrollers. Blynk cloud provide various libraries for many kinds of devices and develop connectivity and communications with microcontrollers.

[0022] The proposed invention discloses that Blynk App is used for creating the mobile interface for accessing the system in mobile device and Blynk library for making connectivity between mobile application and microcontroller ATMegha328P through Blynk cloud server because Blynk library uses IoT communication protocols. The microcontroller is connected to solid state relay for controlling, relay is connected to auto switch, auto switch connected to motor starter and the Wi-Fi module is connected to microcontroller for internet connectivity. Whenever the farmer uses the application and press the on button, then signal is generated and send to the Blynk cloud and Blynk cloud pass the signal to microcontroller. The microcontroller program is implemented for to ON/OFF the relay and when the relay is on, then three phase power supply will be on and auto starter starts the motor and the motor will be ON. The microcontroller takes the input from three phase AC voltage sensor (Which has three phase AC input supply) for reading the voltage level and send the phase wise AC voltage to mobile application through Blynk app cloud and display the voltage on mobile application which gives the confirmation whether power supply is proper or not. The mobile application also displays the status of the motor whether it is on or off.
[0023] The proposed system architecture comprises various components like mobile application, Blynk cloud server, ATmega328P microcontroller, Solid State Relay (SSR), Three Phase Auto Switch, Three Phase Motor Starter, Three Phase Submersible Motor Pump, Three Phase Power Supply and Wi-Fi Module. The user uses the android mobile application on their mobile to control their three phase AC submersible motor pump and it is connected to Arduino Uno board which has ATmega328P microcontroller with Wi-Fi module (ESP8266) through Blynk App cloud server. The Wi-Fi module is used to internet connectivity to microcontroller. The power supply is given to microcontroller using USB cable or battery.

[0024] The three phase AC power is given as input to three phase solid state relay and it is connected to microcontroller and ON/OFF by microcontroller as per the user instruction. If SSR is ON then three phase AC output is generated and it is pass to the three-phase auto switch. The three-phase auto switch is connected to three phase motor starter and it is automatically ON after one minute delay of proper power supply is achieved by auto switch then the submersible motor pump will be ON which is connected to motor starter. If user press OFF button on their mobile application, then the microcontroller cut of the power of SSR and auto switch will be OFF and motor power will cut down.

[0025] An aspect of the present disclosure relates to an IoT based system to control and monitor the alternating current (AC) submersible motor pump wherein the motor is controlled using the user interface mobile application on Blynk app cloud, the system comprising: Arduino Uno board based on ATmega328P microcontroller with Wi-Fi module for providing connectivity of the microcontroller to the Blynk cloud server consisting of 14 digital input/output pins out of which 6 pin gives PWM outputs and 6 analog inputs, 16 MHz ceramic resonator, USB port, power pin, ICSP header and a reset button; three-phase solid state relay (SSR) used for controlling the electrical load; three-phase auto switch to check whether the three-phase supply is proper or not and if the supply is proper then it consecutively turn ON the three-phase motor starter which subsequently turns the three phase AC submersible motor pump ON; three-phase motor starter which is an electromagnetic motor starter used to control the power supply of three phase AC induction motors; three-phase submersible motor pump equipped with the three phase AC motor to suck the water from well or bore well and out the water; ESP8266 Wi-Fi Module with built in system on chip (SOC) with integrated TCP/IP protocol stack for Wi-Fi network access on microcontroller; mobile application providing user interface to the user for accessing the system and ON/OFF the motor using the system which further displays the status of the motor; Blynk cloud server which is used to provide connection between mobile application and microcontroller and pass on the command from the mobile application to microcontroller, manages all the connection and data exchange between the hardware, Blynk Cloud, and mobile application.
[0026] The Arduino Uno board may be connected to the computer for power supply or data transfer through USB cable via USB port. Alternatively, the Arduino Uno board may be connected to the power supply through battery via AC to DC adapter. The solid-state relay (SSR) is a semiconductor switch further comprising optoisolator (optocoupler) having one or more infrared light emitting diode or LED light source and a photo sensitive device. The three phase AC power is given as input to three phase solid state relay, and it is connected to microcontroller and ON/OFF by microcontroller as per the user instruction. If SSR is ON then three phase AC output is generated and it is pass to the three phase auto switch. The three-phase auto switch is connected to three phase motor starter starts, and it is automatically ON after one minute delay of proper power supply is achieved by auto switch then the submersible motor pump will be ON which is connected to motor starter. If user press OFF button on their mobile application, then the microcontroller cut of the power of SSR and auto switch will be OFF and motor power will cut down.

[0027] This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.

OBJECTIVE OF THE INVENTION
[0028] A primary object of the present invention is to provide an IoT based system to control and monitor the AC submersible motor pump using Blynk app cloud.
[0029] The proposed system is very cost effective, saves times of the farmers and tends to prosperous the nations farmers.

BRIEF DESCRIPTION OF DRAWINGS
[0030] To clarify various aspects of some example embodiments of the present invention, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. It is appreciated that these drawings depict only illustrated embodiments of the invention and are therefore not to be considered limiting of its scope. The invention will be described and explained with additional specificity and detail through the use of the accompanying drawings.
[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the embodiments belong. Although methods and materials similar or equivalent to those described herein can be used in the practice or testing, suitable methods and materials are described below. In case of conflict, the patent specification, including definitions, will control. In addition, the materials, methods, and examples are illustrative only and not intended to be limiting.
[0032] In order that the advantages of the present invention will be easily understood, a detail description of the invention is discussed below in conjunction with the appended drawings, which, however, should not be considered to limit the scope of the invention to the accompanying drawings, in which:
[0033] Figure 1 shows system architecture representing various components of the system in accordance with the present invention.
[0034] Figure 2 represent the user interface mobile application used to ON/OFF according to proposed invention. Further, figure 3 shows circuit-diagram representing connections between various embodiments of the system in accordance with the present invention.

DETAIL DESCRIPTION

[0035] The present invention relates an Internet of Things (IoT) based system to control and monitor three phase alternating current (AC) submersible motor pump using Blynk App Cloud.
[0036] Although the present disclosure has been described with the purpose of providing a system to control and monitor three-phase AC submersible motor pump, it should be appreciated that the same has been done merely to illustrate the invention in an exemplary manner and to highlight any other purpose or function for which explained structures or configurations could be used and is covered within the scope of the present disclosure.
[0037] Some embodiments of this disclosure, illustrating all its features, will now be discussed in detail. The words and other forms thereof are intended to be open ended in that an item or items following any one of these words is not meant to be an exhaustive listing of such item or items or meant to be limited to only the listed item or items. It must also be noted that as used herein and in the appended claims, the singular forms "a," "an," and "the" include plural references unless the context clearly dictates otherwise. Although any systems and methods similar or equivalent to those described herein can be used in the practice or testing of embodiments of the present disclosure, the exemplary systems and methods are now described. The disclosed embodiments are merely exemplary of the disclosure, which may be embodied in various forms.
[0038] Various modifications to the embodiment will be readily apparent to those skilled in the art and the generic principles herein may be applied to other embodiments. However, one of ordinary skill in the art will readily recognize that the present disclosure is not intended to be limited to the embodiments illustrated but is to be accorded the widest scope consistent with the principles and features described herein.
[0039] Figure 1 represents the system architecture depicting various embodiments and their interconnections in the proposed system in accordance with the present invention. The various embodiments of the proposed system architecture are discussed below in detail:
[0040] Mobile Application: Mobile application for the android mobile is developed on Blynk App IoT platform for controlling three-phase submersible motor using ON/OFF switch button which can communicate with Arduino by dragging a widget and configuring a pin. Any smart application created using Blynk App can interact with microcontroller, also with full computer.
[0041] Blynk Cloud Server: Android mobile application developed by Blynk App on mobile to work with any hardware that can connect to Blynk App cloud using device authentication token which is generated at the time of creating a mobile application and send to register mail id. Blynk Library is run on the top of the hardware application. It manages all the connection and data exchange between the hardware, Blynk Cloud, and mobile application.
[0042] Microcontroller: Arduino Uno board is based on ATmega328P microcontroller. The 14 digital input/output pins are present on this board, out of these 6 pins gives PWM outputs, 6 analog inputs. The 16 MHz ceramic resonator, USB port, power pin, ICSP header and reset button are also available on board. The USB cable is used to connect the computer and board for power supply and data transfer, as alternate the AC to DC adapter or battery can be used for power supply. The Uno board is the first board in a series of USB Arduino boards, and the reference model for the Arduino platform and Arduino Software (IDE) is to write a program for controller.
[0043] Solid State Relay (SSR): Solid State Relays is semiconductor switch which is used for controlling the electrical loads such as AC motor pump without any moving part, and similar to the electromechanical relay. The prime component of SSR is optoisolator (optocoupler) which has one or more infrared light emitting diode or LED light source and a photo sensitive device. The input and output is separated using optoisolator and when a current passes through the LED, its glow and light is focused on the gap of photo transistor and then it ON. The three phase AC input (30-480 VAC) is given to relay and same output (30-480 VAC) is generated when opto-coupled SSR is turned on using low voltage signals (3-32 VDC) which is connected to microcontroller and operated using mobile application, this low voltage signal is used to illuminates the LED light source.
[0044] Three Phase Auto Switch: It is used in agricultural fields to ON the three phase AC motor pump as soon as the three-phase supply has arrived. This switch first checks the incoming three phase supply whether is it ok or not. If it is ok then the auto switch will be turn ON the pump after the one-minute delay of power ON.
[0045] Three Phase Motor Starter: It is an electromagnetic motor starter used to control the power supply of three phase AC induction motors. It operates on three phase input voltage and full line voltage is applied to motor, when the motor starter solenoid coil is energized by pressing the start button.
[0046] Three Phase Submersible Motor Pump: The pump is equipped with the three phase AC motor. Three phase submersible motor pump is sucking the water from well or bore well and out the water and it is drowned in water.
[0047] Wi-Fi Module: The ESP8266 used as a Wi-Fi Module with built in system on chip (SOC) with integrated TCP/IP protocol stack for Wi-Fi network access on microcontroller. Each ESP8266 module is pre-programmed, and AT command is available to set firmware, and connect to Arduino and simply use it.
[0048] Three Phase AC Voltage Sensor: Three phase AC voltage transducer is operated on 12V/24V DC voltage, and three phase power supply (440VAC) taken as input and generate 0-5V/0-20mA/4-20mA DC as output signal. Thee phase voltage transducer is mainly used for power monitoring, power control and dispatching systems
[0049] Three Phase Power Supply: Three phase AC is electric power used to transmit electric power. It is a polyphase system which used to the power the motors and many other devices. Proper three phase AC power (440 VAC) is required for this work.
[0050] The proposed system architecture in which the user uses the android mobile application on their mobile to control their three phase AC submersible motor pump and it is connected to Arduino Uno board which has ATmega328P microcontroller with Wi-Fi module (ESP8266) through Blynk App cloud server. The Wi-Fi module is used to provide internet connectivity to microcontroller. The power supply is given to microcontroller using USB cable or battery. The three phase AC power is given as input to three phase solid state relay, and it is connected to microcontroller and ON/OFF by microcontroller as per the user instruction. If SSR is ON, then three phase AC output is generated, and it is pass to the three-phase auto switch. The three-phase auto switch is connected to three phase motor starter and it is automatically ON after one minute delay of proper power supply is achieved by auto switch then the submersible motor pump will be ON which is connected to motor starter. If user press OFF button on their mobile application, then the microcontroller cut of the power of SSR and auto switch will be OFF and motor power will cut down.
[0051] Figure 2 represent the snapshot of user interface mobile application in accordance with the present invention. The said user interface is developed on the Blynk app IoT platform. The user interface contains the button to ON/OFF the AC submersible motor pump from anywhere in the world. The proposed user interface also displays the current status of the motor i.e., whether it is ON/OFF.
[0052] Figure 3 represent the circuit diagram of the present system architecture in accordance with the present invention. In this circuit, the digital pin 13 and ground pin of Arduino Uno is connected to three phase solid state relay for switch ON/OFF by microcontroller as the instruction of user from their mobile application. If pin 13 is high then 3.3 VDC is generated as an output and this DC voltage is activate the SSR and motor pump will be start automatically, because auto switch is connected to motor starter. Further, if pin 13 is low then voltage become 0 VDC which will be deactivate the SSR and cuts three phase AC power and the auto switch will be tripped, and motor pump will be automatically OFF. The three phase AC voltage sensor is taken three phase power supply (440 VAC) as input and 0-05 VDC is generated as output for each phase which is connected to pin 9, 10 and 11 of Arduino. If pin 9, 10 and 11 received the 0-05 VDC then Arduino convert it into the corresponding AC voltage value and send to the mobile application and display the phase wise AC voltage. This will help to farmers to check the three phase AC voltage whether is it proper or not.
[0053] The step-by-step solution of IoT based mobile applications to control and monitoring of three phase AC submersible motor pump using Blynk App cloud is given below:
Step 1: Installation of Arduino IDE and Libraries
a. Download the latest Arduino IDE and Install in your system.
b. Download and extract the blynk library zip file and copy the contents and paste inside library folder into documents--> Arduino --> Libraries.
Step 2: Run AT Command
a. Type AT and press enter if result is ok then ESP8266 is configure properly.
b. Now we will send a series of commands to change the Wi-Fi module's baud rate from 115200 (too fast) to 9600. Type the AT+UART_DEF=9600, 8, 1, 0, 0 press enter to change baud rate.
c. If the result is ok, then changed the baud rate to 9600.
d. Close the serial monitor and change this in the code.
e. Change 115200 to 9600 in both the places program and upload the code.
f. We changed the baud rate and now we will try connecting to a network. Open the serial monitor and send the command AT If it ok after sending the command.
g. Now, send this command to set the module on mode 1 - AT+CWMODE=1. The result should be ok.
Step 3: Blynk App Setup
a. Download the Blynk app from play store and sign in.
b. To create a new project, press the + icon on the top.
c. Enter the project name.
d. Choose Arduino UNO device.
e. Connection type as ESP8266 (Wi-Fi) and press create.
f. As you create the connection an authentication token will be sent to your registered e-mail.
g. To add a button press + and select button.
h. Press on the newly created button to edit it.
i. Enter it name and set pin to digital D13.
j. Toggle the mode to Switch.
k. This will turn ON/OFF the In-Built LED on the Arduino.
Step 4: Program
a. Open Arduino IDE and select board to Arduino Uno and select the right port.
b. Write a program by including ESP8266_Lib.h and BlynkSimpleShieldEsp8266.h header file.
c. Set the Auth Token in program received on registered mail id an also set Wi-Fi username and password in program.
d. Load the program in microcontroller and disconnect from computer.
e. Connect the ESP8266 to Arduino UNO.
f. After the connection is complete, plug the Arduino into the computer.
g. Open the Serial Monitor and set baud rate to 115200.
h. In the Blynk App, select your project and click the play button.
i. Press the button to switch ON/OFF the motor.
j. Connect the three phase AC voltage sensor between the three phase AC power and Arduino (Three phase AC supply should be input to the three phase AC voltage sensor). Three phase AC voltage is displayed on mobile application to monitor the power supply whether is it OK or not.
Step 5: Circuit Setup: circuit setup is already discussed above in the circuit diagram in detail.
[0054] The proposed invention provides the IoT based solution to operate the three phase AC submersible motor pump to ON/OFF by the user using their mobile application. The proposed invention is cost effective and time saving solution for farmers. Many time, it required to ON/OFF the motor pump which is used for irrigation purpose, presently it is done through manually pressing the motor starter button at the site but by using this application there is no need to go at site to ON/OFF the motor pump, farmer can do that by their mobile so that it saves the time and fuel cost to reach their site.
[0055] The figures and the foregoing description give examples of embodiments. Those skilled in the art will appreciate that one or more of the described elements may well be combined into a single functional element. Alternatively, certain elements may be split into multiple functional elements. Elements from one embodiment may be added to another embodiment. For example, order of processes described herein may be changed and are not limited to the manner described herein. Moreover, the actions of any flow diagram need not be implemented in the order shown; nor do all of the acts need to be necessarily performed. Also, those acts that are not dependent on other acts may be performed in parallel with the other acts. The scope of embodiments is by no means limited by these specific examples.
[0056] Although implementations for invention have been described in a language specific to structural features and/or methods, it is to be understood that the appended claims are not necessarily limited to the specific features or methods described. Rather, the specific features and methods are disclosed as examples of implementations for the invention.