This project presents a real-time Emergency Response System designed to monitor critical health parameters and provide immediate alerts during abnormal conditions. The system integrates the MAX30102 heart rate/SpO₂ sensor, LM35 temperature sensor, and a mercury-based fall detection sensor interfaced with an Arduino Uno, which performs initial sensing and data acquisition. The Arduino forwards these values to a Raspberry Pi 4, which acts as the primary processing and communication hub. The Raspberry Pi 4 displays the data on an LCD screen for local monitoring and activates a buzzer during abnormal readings or fall events. Additionally, the system incorporates an RA-02 LoRa transceiver module to wirelessly transmit health data to a remote receiving unit built using a Raspberry Pi Zero 2W. The receiving module, equipped with an LCD display and buzzer, allows caregivers to remotely view patient health conditions and receive instant alerts. An SD card is included for data logging, and the entire system is powered through a stable adaptor supply. This combination of biomedical sensing, edge processing, and long-range LoRa communication ensures continuous monitoring and reliable emergency detection, making the system ideal for elderly care, remote patient tracking, and accident response scenarios.    

The main objectives of the project are:

 To continuously monitor vital health parameters such as heart rate, SpO₂, body temperature, and fall detection using biomedical sensors.

 To interface sensors with Arduino Uno for accurate data acquisition and preprocessing.

 To transmit collected health data to Raspberry Pi 4 for advanced processing, display, and local alert generation.

 To display real-time health information on an LCD screen for easy and immediate visualization.

 To provide instant emergency alerts using a buzzer whenever abnormal or critical health conditions are detected.

 To implement long-range communication using the RA-02 LoRa module for transmitting health data to a remote monitoring station.

 To design a remote receiving unit using Raspberry Pi Zero 2W to display transmitted data and provide emergency alerts.

 To ensure reliable system operation through stable adaptor-based power supply and SD card-based data logging.

 To develop a low-cost, scalable, and energy-efficient emergency response system suitable for elderly care and remote health monitoring.

 To enhance safety and response time by enabling caregivers or medical personnel to remotely monitor patient health conditions in real time.      

The major building blocks of the project are:  

1. Power Supply.
2. Raspberry pi zero 2W.
3. Raspberry pi4.
4. Arduino uno.
5. Temperature sensor.
6. MAX30102(heartbeat&spo2) sensor.
7. Fall detection sensor.
8. Two LCD display.
9. Two Buzzers.
10. SD card.
11. Ra-02 LoRa MODULES.

    Software’s used:  

1. Python programming.
2. Express SCH for Circuit design.
3. Raspbian OS.
4. ARDUINO IDE STUDIO Compiler for Embedded C programming. 

                 

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