Temperature Monitoring System using Bluetooth for Server Rooms

Temperature Monitoring System using Bluetooth for Server Rooms

Dr. Ajay Talele, Ritesh Ghatage, Krushna Gavhane, Samarth Gholap , Dada Garande , Gurav Parashar, Kushal Garade

Department of Engineering, Sciences and Humanities (DESH) Vishwakarma Institute of Technology, Pune, Maharashtra, India

Abstract – This paper describes the improvement of a wireless clever temperature and humidity monitoring gadget that takes gain of Bluetooth connectivity and statistics show and a committed mobile software for control. Designed to provide an correct and consumer-pleasant solution, the machine eliminates the want for internet connection, making the method of temperature tracking in diverse settings simplified. By making plans a Bluetooth module integrated in the circuit, the machine wirely transmits the records to an Android-based application, which allows faraway control of gadgets along with actual-time readings and air conditioners, heaters and other climate-sensitive devices. This clever tracking gadget minimizes the want for manual temperature readings or net- established devices, enhancing both performance and convenience. Extensive trying out throughout numerous environments has tested the machine's reliability and sensible effectiveness. The findings show that it is able to play a vital function in improving environmental management and automation for each residential and commercial makes use.

Keywords – DHT22 Sensor, Arduino-Based Monitoring, Real- Time Environmental Sensing, IoT-Based Temperature Control, Mobile Application for Monitoring, Wireless Sensor Networks

I. INTRODUCTION

The current rapidly in the book technical environment, the need for effective and reliable environmental monitoring systems has reached new heights. Many applications are temperature and humidity important parameters, from home air conditioning and kitchen management to industrial process control and maintenance of commercial space. Traditional monitoring technology usually depends on manual readings or systems that depend on the Internet, which can be cumbersome and susceptible to human error. These issues highlight the need for a smart and automatic solution that can distribute accurate real -time data without the need for continuous manual intervention. This article introduces a wireless intelligent temperature monitoring system for the purpose of resolving these challenges. The central DHT22 sensor of the system is, which is observed for its high accuracy and reliability in measuring temperature and humidity. The HC-05 Bluetooth module sensor allows the data to be transmitted wirelessly to a mobile application, which removes dependence on internet connection. This method not only streamlines the installation process, but also increases the performance of the system in areas with limited or no network access. Mobile application made for Android devices provides real

-time environmental readings and enables remote

monitoring of temperature and humidity levels. This quick response is important to maintain ideal conditions in various environment.

1. LITERATURE REVIEW

   A wireless smart temperature and humidity monitoring system was created to improve environmental sensation that uses a mobile application and a Bluetooth module to collect and imagine data in real time. This system increases environmental monitoring by providing accurate and timely information, making it highly effective for applications requiring accurate climate control [1]. A combination of Bluetooth and GSM technology created a greenhouse monitoring and management system that enables distant temperature and humidity monitoring to promote agricultural production. Their system provides real

   -time warning and automatic control mechanisms, ensure optimal environmental conditions for crops and improves overall efficiency in greenhouse farming [2]. It was displayed to introduce a temperature-dependent Bluetooth low energy (BLE) that thermoelectric energy harvesting is possible for a permanent Internet of Things application. Their study highlights the capacity of energy-efficient wireless communication, reduces dependence on traditional power sources and supports Green IOT initiative [3].A miniature Bluetooth-Capable Temperature Controller for electrochemical sensing was proposed by Kulkarni and Goel for use in industrial and research settings, which displays its utility in accurate supervision. Their work emphasizes the importance of real -time and accurate temperature regulation, which is important to ensure stability in electrochemical

   energy efficiency, a Bluetooth-based smart home control and air monitoring system that provides an integrated solution for real-time indoor air quality evaluation and equipment automation. Their system allows spontaneous connectivity between smart home devices, facilitates efficient control over the domestic environment and reduces energy consumption [5]. Bluetooth has been used to monitor patients remotely in healthcare applications. Focusing on remote diagnosis, ble- based remote health monitoring systems to display the importance of blemadicine, focus on real-time patient data collection and transmission. Their research underlines the role of low-power communication in enhancing the patient's care and enabling continuous health monitoring [6]. An Internet of Things (IOT)-Based wearable sensor system was created by Ali et al. It analyzes body temperature, heart rate and SPO2. It integrates even in distant areas, even to allow Bluetooth and Android apps for real – time health monitoring. This system increases access to healthcare by providing real -time physical data to medical professionals, which ensure timely intervention [7]. Their system enables real-time data collection and cloud-based monitoring, ensuring optimal environmental conditions to maintain server performance and prevent overheating issues [8]. To ensure reliable monitoring of significant infrastructure, Bluetooth- based temperature acquisition system for industrial converter station sites. Their solution provides data accuracy and wireless transmission capabilities, contributing to the efficiency of industrial temperature regulation [9]. His research emphasizes the growing role of Bluetooth in distance patient monitoring and the ability to revolutionize modern telemedicine practices [10].

2. METHODOLOGY/EXPERIMENTAL

   1. Materials and Components

      The temperature monitoring system consists of various hardware and software components that

      reactions [4]. To improve user convenience and

      enable real -time environmental sensation. Major hardware components include:

      1. DHT22 Sensor: A high-perishable digital temperature and humidity sensor that provides reliable measurements. It operates within a temperature range of -40

         ° C to 80 ° C and has accuracy of accuracy ° 0.5 ° C. The sensor communicates with microcontroller using single- wire protocols, ensuring efficient data transmission.

      2. HC-05 Bluetooth module: A wireless communication module that allows spontaneous data transmission between Arduino UNO and a mobile device. This serial works on the Communication Protocol (Uart) and supports both master and slave mode for connectivity.

      3. Arduino Uno: A widely used microcontroller board based on Atmega328P. It processes the input signal from the DHT22 sensor, executes the programmed logic, and controls the output device such as LCD displays and bajers.

      4. LCD display: A 16×2 liquid crystal display (LCD) module that provides real -time temperature readings. This is intervened with the low wiring complexity and an I2C module for efficient data displays with Arduino UNO.

      5. Bajer/alarm: An active buzzer that produces an audio alert when the temperature crosses the pre-set threshold. The bizar is triggered by Arduino via a digital output pin.

   2. System Design and Algorithm

      1. Power Supply Unit: A regulated power supply (typically 5V DC) that ensures stable operation of all the components.

         The temperature monitoring system follows a structured design that includes data acquisition, processing, and alert mechanisms. The operational steps are as follows:

         The software tools used include:

         • Arduino Ide: Official Development Environment for Coding, Compilation and Sketch in Arduino Uno. The code sensor is written in C ++ with an embedded library for communication and data processing.

         • MIT app inventor: A graphical programming tool is used to develop and develop a mobile application to obtain temperature data. The app establishes a Bluetooth connection with the HC-05 module and provides

      a spontaneous user interface for real-time

      monitoring.

      1. Sensor Data Acquisition: The DHT22 sensor continuously measures temperature and humidity at predefined intervals.

      2. Microcontroller Processing: The Arduino Uno reads the sensor values, processes the data, and checks for threshold breaches.

      3. Wireless Transmission: The HC-05 Bluetooth module transmits the processed temperature data to the mobile application.

      4. Real-Time Display: The LCD display updates temperature readings continuously for visual feedback.

      5. Alert Mechanism: If the temperature exceeds a predefined threshold, the buzzer/alarm is activated to notify the user immediately.

      6. Mobile App Notification: The MIT App Inventor-based application receives real-time temperature updates and displays them on the users smartphone.

   3. Testing and Validation

   To ensure the system functions correctly, extensive testing was conducted:

   • Hardware test: Each component was tested individually for proper functionality. The DHT22 sensor was calibrated to ensure accurate temperature reading. The HC-05 Bluetooth module was combined with several devices to verify stable wireless communication.

   • Software Testing: Arduino code was tested using serial monitor debugging, which ensures the correct sensor data acquisition and processing. Mobile applications were tested on various Android devices for compatibility and smooth user interactions.

   • System Integration To validate its reaction and reliability, the entire system was gathered and tested under various environmental conditions including controlled temperature variation.

   • Display assessment: The accuracy of temperature readings was compared to a standard digital thermometer. The response to Bluetooth data transmission and alarm activation speed was measured to ensure real – time operation.

   • Error Handling: The system was subjected to stress testing, which included a simulated sensor malfunction and Bluetooth disconnect. The software was refined to handle these conditions by applying the mechanism of detection of error and re -adding efforts.

   These tests confirmed that the system provides exact temperature monitoring and effectively alert users in terms of abnormal temperature variation.

3. RESULTS AND DISCUSSIONS

   The approximate Bluetooth temperature monitoring system successfully integrated the DHT22 sensor, Bluetooth HC-05 module and

   Arduino UNO to provide real-time environmental identity. The system showed high accuracy in temperature measurements, stable communication in Bluetooth, and efficient alert mechanisms when the temperature exceeded the predetermined limit. The data transmission between Arduino and mobile applications was smooth with the least delay, which ensures real -time view. The bell -lart system effectively worked, providing quick information when critical temperature conditions were detected. The system maintained a stable operation under various environmental conditions, proved its credibility for residential automation, industrial monitoring and agricultural applications. In addition, the mobile application has provided a favorable interface to monitor the temperature levels and customize the range values..

   KEY OBSERVATIONS:

   1. Real-Time Monitoring and Accuracy:

      The DHT22 sensor provided precise temperature readings with a deviation of only ±0.2°C. Data was updated instantly on the LCD and mobile app, ensuring real-time tracking.

   2. Bluetooth Communication Performance: The HC- 05 module maintained a stable connection within a 10-meter indoor range. No significant data loss or communication delays were observed.

   3. Alert Mechanism Efficiency:

      The buzzer was activated within one second of detecting a temperature threshold breach. Immediate alerts ensured timely user intervention to prevent overheating.

   4. Mobile Application Usability:

      The MIT App Inventor-based app provided an intuitive interface for monitoring temperature. Users could set custom temperature limits and receive instant notifications.

   5. Energy Efficiency:

      The system operated effectively on a 5V DC power supply with low power consumption. It is suitable for portable and battery-powered applications.

   6. Potential Enhancements:

   Future improvements could include Wi-Fi-based remote monitoring and cloud storage for historical data analysis. Multi-sensor integration could enhance monitoring across different locations.

4. CONCLUSION

   The proposed temperature monitoring system successfully monitored temperature variations in real time and transmitted wirelessly transmitted data through Bluetooth. Mobile application provided an intuitive interface displaying temperature values with minimal delay. The DHT22 sensor demonstrated continuous readings with a minimum deviation of ° 0.2 ° C from the standard thermometer, ensuring accurate environmental monitoring. The HC-05 Bluetooth module maintained a stable connectivity up to 10 meters without data loss, making it suitable for indoor applications. The Bajer Alert System was effectively triggered when the temperature exceeded the predetermined range, ensuring immediate user notification. From

   temperature detection to cautious activation, the system's response time was measured in about 1 second, performing high efficiency. Additionally, power consumption analysis showed that the system 5V DC is efficiently operated on the power supply, making it viable for battery-operated applications. The MIT app inventor-based mobile application successfully displayed real-time data and allowed users to adjust the temperature threshold, improved flexibility and purpose

5. REFERENCES

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3. Nyaga, Stephen Gitonga, M. K. Munji, and R. L. Nyenge. "Design and fabrication of greenhouse monitoring and control system based on global system for mobile communication and bluetooth." African Journal of Pure and Applied Sciences 4, no. 2 (2023): 27-38.

4. Pyt, Patryk, Piotr Jankowski-Mihuowicz, and Mariusz Wglarski. "Bluetooth Low Energy Beacon Powered by the Temperature Difference." Electronics 12, no. 6 (2023): 1278.

5. Kulkarni, Madhusudan, and Sanket Goel. "Bluetooth enabled miniaturized temperature controller device for electrochemical sensing applications." In Electrochemical Society Meeting Abstracts prime2020, no. 57, pp. 3894-3894. The

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