Description:Field of the Invention
The field of invention for monitoring and speed control of AC motors using PWM technique, integrated with a Wi-Fi module and Thing Speak app, revolutionizes motor control. Combining electrical engineering with wireless connectivity and cloud-based analytics, this system enables remote monitoring and control. The Wi-Fi module facilitates seamless communication, while the Thing Speak app offers real-time data and advanced analytics for informed decision-making. Users can optimize motor performance, diagnose issues, and schedule maintenance tasks remotely, enhancing operational efficiency across industrial and commercial sectors.
Objectives of the invention
This invention seeks to provide a more sophisticated and adaptable solution for controlling and monitoring AC motors, leading to improved performance and better system health.
Background of the Invention
The integration of PWM techniques and Wi-Fi modules in AC motor systems enables advanced monitoring and precise speed control functionalities. Pulse Width Modulation (PWM) facilitates efficient regulation of motor speed by adjusting the duty cycle of the electrical signal. Concurrently, Wi-Fi modules provide wireless connectivity, allowing remote monitoring and control of motor operations. This innovative fusion empowers users with real-time insights into motor performance while enabling seamless adjustments from remote locations. Such systems find applications in various industries, offering enhanced efficiency, reliability, and adaptability to meet evolving operational needs.
The present invention relates in general to a motor monitoring system, and more particularly to a motor monitoring system designed to monitor and adjust a motor's rotational speed according to the ambient temperature. The invention of monitoring and speed control systems for AC motors using PWM techniques and Wi-Fi modules represents a paradigm shift in motor control technology. By combining precision, efficiency, and remote accessibility, this innovation empowers industries to achieve higher levels of productivity, reliability, and sustainability in their operations. As technology continues to evolve, further advancements in motor control and wireless connectivity will drive even greater efficiency and innovation in industrial automation.
US20030227272A1 discloses motor monitoring system to monitor and adjust a motor's rotational speed, voltage, according to the ambient temperature.US20210341901A1 discloses the conditional monitoring process of the motor involved in an industrial process such that the motor drive itself or the upstream control elements can react to potentially damaging faults. The goal of condition monitoring is to predict failures before they happen in order to prevent hazardous operating conditions and unscheduled downtime. Condition monitoring solutions typically monitor machine parameters such as vibration, temperature, and speeds. Typical fault conditions include but are not limited to bearing failure, stator winding failure, broken rotor bars, misalignment, unbalance, friction, and vibration. The parameters may also include voltage and current measurements taken directly from the wiring that connects a drive to a motor. US4458194A describes a method and apparatus for controlling the speed of an AC motor using PWM technique, incorporating features such as closed-loop feedback control and fault detection. US4458194A discloses a system and method for monitoring and controlling the performance of AC motors through PWM modulation, with features including real-time data analysis, predictive maintenance, and energy optimization. US4471276A describes an integrated system for invention monitoring and speed control of AC motors using PWM technique, featuring advanced monitoring capabilities, fault detection algorithms, and adaptive control strategies.
Much research has been done earlier, but all the parameters like voltage, current, speed, and temperature are displayed or monitored in LCD displays. But in our invention, we have introduced the Thing Speak app which operates through a Wi-Fi module, so that all the parameters can be monitored on our mobile phone. we can monitor our required parameters, at any instant, to know the actual amount of energy used.
Summary of the Invention
In light of the above-mentioned drawbacks in the prior art, the present invention aims to enable precise speed control and real-time monitoring. The invention of monitoring and speed control of AC motors using the Pulse Width Modulation (PWM) technique has reached new heights with the integration of a Wi-Fi module and the Thing Speak app. This innovative system offers unparalleled convenience and accessibility by enabling users to remotely monitor and control AC motor operations from anywhere with internet connectivity. The Wi-Fi module facilitates seamless communication between the motor control system and the Thing Speak app, allowing users to access real-time data on motor performance, energy consumption, and operational status. Additionally, the app provides advanced analytics and visualization tools, empowering users to gain valuable insights into motor operation and make informed decisions to optimize efficiency and productivity. With this integrated solution, users can remotely adjust motor speed, set alarms for fault detection, and even schedule maintenance tasks, enhancing operational flexibility and efficiency in diverse industrial and commercial settings.
Detailed Description of the invention
The integration of a Wi-Fi module and the Thing Speak app into the monitoring and speed control system of AC motors using the Pulse Width Modulation (PWM) technique represents a transformative leap forward in motor management technology. This innovative combination harnesses the power of wireless connectivity and cloud-based analytics to revolutionize the way AC motors are monitored, controlled, and optimized for performance and efficiency. AC motors play a crucial role in powering various industrial and commercial applications, from manufacturing machinery to HVAC systems. Effective control of AC motors is essential for ensuring smooth operation, energy efficiency, and operational safety. Traditionally, motor control methods such as direct-on-line (DOL) starting and variable frequency drives (VFDs) have been used, but they often lack precision, responsiveness, and remote accessibility.
Pulse Width Modulation (PWM) has emerged as a preferred method for controlling the speed of AC motors due to its ability to regulate motor speed by modulating the width of voltage pulses. PWM offers finer control over motor speed compared to traditional methods, allowing for smoother acceleration, deceleration, and precise speed regulation. This technique minimizes energy losses, reduces motor wear, and enhances overall efficiency. The integration of a Wi-Fi module into the motor control system expands its capabilities by enabling wireless communication and remote access. Wi-Fi connectivity allows users to monitor and control motor operations from any location with internet access, eliminating the constraints of physical proximity. The Wi-Fi module acts as a bridge between the motor control unit and external devices, such as smartphones, tablets, or computers, enabling seamless communication and data exchange.
Thing Speak is an IoT (Internet of Things) platform developed by MathWorks that enables users to collect, analyze, and visualize data from connected devices. The Thing Speak app serves as a central platform for accessing and analyzing real-time data from the motor control system. It provides a user-friendly interface for monitoring motor performance metrics, such as speed, current, voltage, temperature, and power consumption. With the Thing Speak app, users can remotely monitor motor operations in real time, accessing critical performance data and diagnostic information. The app offers customizable dashboards and visualization tools, allowing users to create informative graphs, charts, and gauges to display motor parameters. This real-time monitoring capability enables proactive decision-making, facilitating timely interventions to optimize motor performance and prevent potential issues.
Thing Speak provides advanced analytics capabilities, enabling users to gain deeper insights into motor performance trends, patterns, and anomalies. Users can leverage built-in MATLAB analytics functions or custom scripts to perform complex data analysis, trend prediction, and anomaly detection. This analytical capability empowers users to identify inefficiencies, diagnose problems, and implement targeted optimization strategies to improve motor performance and efficiency. The integration of the Thing Speak app with the motor control system allows users to remotely adjust motor settings and parameters in response to changing operational requirements. Using the app's intuitive interface, users can modify speed setpoints, adjust acceleration and deceleration profiles, and configure operating modes. This remote-control capability enhances operational flexibility, enabling users to optimize motor performance according to specific application needs.
One of the key benefits of the integrated system is its ability to detect and diagnose motor faults and abnormalities in real time. The Thing Speak app provides alerts and notifications based on predefined thresholds or anomaly detection algorithms, alerting users to potential issues such as overheating, overloading, voltage fluctuations, or abnormal behavior. These proactive alerts enable timely interventions, preventing downtime and minimizing the risk of equipment damage or failure. By leveraging the data collected and analyzed by the Thing Speak app, users can implement predictive maintenance strategies to optimize motor performance and reliability. Machine learning algorithms can be applied to historical data to predict potential failures, identify maintenance needs, and schedule preventive maintenance tasks. This proactive approach minimizes unplanned downtime, extends equipment lifespan, and reduces maintenance costs. The integrated system can be seamlessly integrated with other smart systems and IoT devices to create interconnected and automated environments. For example, motor control data from Thing-Speak can be integrated with building management systems, energy management systems, or predictive maintenance platforms to optimize overall system performance and energy efficiency. This interoperability enhances the value and versatility of the integrated motor control solution.
Much research has been done earlier, but all the parameters like voltage, current, speed, and temperature are displayed or monitored in LCD displays. But in our research, we have introduced the Thing Speak app which operates through a Wi-Fi module, so that all the parameters can be monitored on our mobile phone. we can monitor our required parameters, at any instant, to know the actual amount of energy used.

Brief Description of Drawings
The invention will be described in detail concerning the exemplary embodiments shown in the figures wherein:
Figure 1 Pictorial representation of AC Motor using the PWM Technique
Figure 2 Block diagram of an overall Proposed system
Detailed Description of Drawing
The present invention appears to be a setup involving an electronic circuit with various components connected together, likely for a specific function such as a motor control system or an IoT (Internet of Things) application as shown in Figure 1.
In Figure 1, The black box at the top center appears to be a power supply unit. It is likely providing power to the entire circuit. The blue board in the middle is an Arduino, a popular microcontroller used for prototyping. It has various connections to other components. Next to the Arduino is a breadboard with various electronic components (resistors, capacitors, LEDs, etc.) connected by jumper wires. This is used for assembling the circuit without soldering. On the top right, there is a motor with red labeling. It is an Induction motor, which may controlled by the circuit. Near the motor, there seems to be a motor driver module, which is used to control the motor. This module interfaces between the Arduino and the motor, providing the necessary power and control signals. On the left side is a mobile phone displaying what looks like an app interface, possibly used for controlling or monitoring the prototype. Other circuit boards are present, possibly for additional functionalities like Wi-Fi or sensor interfaces. Various wires connect all these components, allowing power and data signals to flow.
The Arduino board acts as the central control unit, processing inputs, and controlling outputs. The motor driver module interfaces with the motor, allowing the Arduino to control its speed and direction. The mobile phone might be used to send commands to the Arduino wirelessly, likely via Bluetooth or Wi-Fi, allowing for remote control or monitoring. The additional circuit boards may house sensors or communication modules (e.g., Wi-Fi modules for IoT applications). The power supply unit ensures that all components receive the appropriate voltage and current for operation. This invention could be used for various applications, such as A remotely controlled robotic system. An IoT device for home automation, where the motor could be a part of a smart appliance. An educational invention demonstrating motor control via a microcontroller.
3 Claims & 2 Figures , Claims:The scope of the invention is defined by the following claims:
Claims:
1. The System/Method to Monitor and Speed Control of Ac Motors using Pwm Technique comprises:
a) A arduino microcontroller (8), which acts as the central processing unit, coordinating all operations and processing inputs. Connected to the Arduino is a breadboard, populated with various electronic components such as resistors, capacitors, and LEDs which forms the basic circuitry.
b) A motor driver (6) module is integrated, providing the necessary interface to control an induction motor (1) visible at the top right, allowing for adjustments in speed and direction as dictated by the Arduino. Powering the entire assembly is a black power supply unit (3), ensuring that all components receive the correct voltage and current.
c) A mobile phone (2) is included, likely using a custom application to send commands wirelessly to the Arduino, possibly via Wi-Fi module (7), indicating the remote control capabilities. Additionally, there are other circuit boards present, which could house sensors (5) and communication modules to expand the functionality of the system.
2. As mentioned in claim 1, the setup includes a motor (1) and a motor driver (6), indicating that the prototype is designed for motor control applications, The system controls the speed and direction of the motor which could be useful in various automation or robotic applications. The central control unit is an Arduino microcontroller (8). The setup uses programmable logic to process inputs and control outputs, providing flexibility and the ability to execute complex tasks.
3. As per claim 1, A dedicated power supply unit (3) is used to ensure all components receive the appropriate voltage and current, essential for stable operation.