IOT IV Bag Monitoring and Termination System Using Blynk IOT for Real Time Monitoring

Abstract

This project proposes the development of an IoT-based IV Bag Monitoring and Termination or Alert System to enhance patient safety and reduce manual workload on healthcare staff. In hospitals, intravenous (IV) fluid levels are traditionally monitored by nurses through periodic manual checks, which can sometimes lead to delays in replacing empty IV bottles due to work pressure or human error. Such delays may cause serious complications for patients. The proposed system continuously monitors the IV fluid level using appropriate sensors and processes the data in real time through an IoT-enabled platform. When the fluid level reaches a predefined threshold (preset limit or reference value), the system automatically generates alerts to notify medical staff, ensuring timely replacement of the IV bag. The system aims to improve efficiency, minimize human intervention, and enhance reliability in patient care by providing an automated, real-time monitoring.

Introduction

The text describes an IoT-Based IV Bag Monitoring and Alert System designed to improve patient safety by automating the monitoring of intravenous (IV) fluid levels in hospitals. Traditionally, IV bottles are checked manually by nurses at regular intervals. Due to heavy workload, staff shortages, or human errors, nurses may fail to replace an empty IV bottle on time, which can cause serious medical risks such as interruption of medication delivery, blood backflow, or air embolism.

The proposed system uses IoT technology, sensors, and real-time communication to continuously monitor the IV fluid level and alert healthcare staff before the IV bag becomes empty. This reduces manual monitoring effort and ensures timely replacement.

Literature Survey

Previous research has explored automated IV monitoring systems:

• Wireless IV fluid level detection systems use sensors and wireless communication to alert healthcare workers.
• IoT-based IV monitoring solutions provide remote monitoring and automated notifications.
• Advanced systems combine monitoring with automatic termination mechanisms for improved safety.

These studies demonstrate the importance of real-time IV monitoring in reducing human errors and improving healthcare efficiency.

Problem Formulation

Manual IV monitoring creates challenges in busy hospital environments. Delayed observation may result in:

• Empty IV bottles without replacement.
• Interruption of treatment.
• Blood flowing back into IV tubes.
• Risk of air entering the bloodstream.
• Increased workload for nurses.

The proposed IoT-based system solves this problem by continuously measuring IV fluid levels and sending alerts when the fluid reaches a critical threshold.

Objectives of the Project

The main objectives are:

1. Automatically monitor IV fluid levels without manual inspection.
2. Provide real-time alerts through the Blynk IoT application and email notifications.
3. Prevent medical risks caused by delayed IV replacement.
4. Enable continuous and reliable IV monitoring.
5. Improve patient safety while reducing healthcare staff workload.

Proposed Methodology

The system architecture consists of:

• Load Cell Sensor: Measures the weight of the IV bottle.
• HX711 Amplifier Module: Converts load cell signals into digital data.
• ESP32 Microcontroller: Processes sensor data and controls the system.
• Wi-Fi Communication: Sends information to the cloud.
• Blynk Cloud and Mobile Application: Allows nurses to monitor IV status remotely.
• Alert System: Includes LED indicators and a buzzer for warnings.

Working Principle

1. The system is powered ON.
2. The load cell continuously measures the IV bottle weight.
3. The HX711 module converts sensor output into digital values.
4. ESP32 calculates the remaining IV fluid level.
5. Data is transmitted to the Blynk Cloud through Wi-Fi.
6. Nurses monitor the IV status using the Blynk mobile app.
7. If the fluid level falls below the predefined limit:
   • A buzzer sounds.
   • Red LED turns ON.
   • Blynk notification is generated.
   • Email alert is sent.
8. After replacing the IV bottle, monitoring continues automatically.

System Components

Hardware Requirements

The system uses:

• ESP32 microcontroller
• Load cell sensor
• HX711 amplifier module
• LED indicators
• Buzzer
• Wi-Fi network
• Computer/laptop for programming

Software Requirements

The software components include:

• Arduino IDE for ESP32 programming.
• Blynk IoT platform for cloud monitoring and alerts.
• ESP32 Wi-Fi libraries for communication.
• HX711 libraries for sensor data processing.
• Blynk mobile application for real-time monitoring.

Advantages of the System

• Reduces dependence on manual IV checking.
• Provides real-time monitoring.
• Decreases chances of human error.
• Improves patient safety.
• Saves nurses’ time.
• Enables remote monitoring through IoT connectivity.

Conclusion

The proposed IV fluid monitoring system effectively addresses critical challenges in healthcare by enabling real-time level tracking and automated low-fluid detection. By triggering instant alerts via buzzer, LED, and mobile notifications, it ensures timely bag replacement by medical staff, thereby reducing manual monitoring efforts. This not only prevents risks such as blood backflow but also enhances overall patient safety and healthcare efficiency, making it a reliable solution for modern medical environments.

References

[1] A. Al-Fuqaha, M. Guizani, M. Mohammadi, M. Aledhari, and M. Ayyash, “Internet of Things: A survey on enabling technologies, protocols, and applications,” IEEE Communications Surveys & Tutorials, ISSN: 1553-877X, Vol. 17, Issue: 4, pp. 2347–2376, 2015. [2] R. Want, B. N. Schilit, and S. Jenson, “Enabling the Internet of Things,” IEEE Computer, ISSN: 0018-9162, Vol. 48, Issue: 1, pp. 28–35, 2015. [3] S. R. Nandhini and P. Balasubramanie, “IoT based smart health monitoring system,” IEEE International Conference on Communication and Signal Processing (ICCSP), pp. 216–220, 2017. [4] A. Karthik, B. Saranteja, R. Ajay, and J. SwethaPriyanka, “IoT intravenous bag monitoring and alert system,” Asian Journal for Convergence in Technology, ISSN: 2350-1146, Vol. 9, Issue: 1, pp. 30–36, 2023.

Copyright

Copyright © 2026 Mrs. Yashaswini R, Bhoomika M H, Meghana B G , Ranjitha M V, Roopashree T R . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.