RxHealth Vital Tracker

Description

RxHealth Vital Tracker is a reactive Java application built with RxJava that simulates real-time monitoring of patient vital signs.
The system streams heart rate, blood oxygen, and body temperature from virtual sensors, processes them in parallel, and raises alerts when abnormal values are detected.

This project is designed to demonstrate RxJava expertise with best practices:

• Separation of concerns
• Reactive streams
• Concurrency management using Schedulers
• Real-time data processing & alerting

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Features

• 🫀 Heart Rate Monitoring (bpm)
• 🌬️ Oxygen Saturation Monitoring (%)
• 🌡️ Body Temperature Monitoring (°C)
• ⚡ Real-time stream combination using combineLatest
• 🚨 Automated health alerts:
  • Fever detection
  • Hypoxia detection
  • Tachycardia detection
• 👩‍⚕️ Multi-patient support with independent sensor streams

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Architecture

RxHealth-Vital-Tracker/
┣ 📂 model
┃ ┣ VitalReading.java # Sensor reading data model
┃ ┣ Alert.java # Health alert model
┃ ┗ Patient.java # Patient model
┣ 📂 sensor
┃ ┣ HeartRateSensor.java # Emits heart rate values
┃ ┣ OxygenSensor.java # Emits oxygen saturation
┃ ┗ BodyTempSensor.java # Emits body temperature
┣ 📂 service
┃ ┣ VitalProcessor.java # Combines sensor data
┃ ┣ AlertService.java # Generates alerts based on rules
┃ ┗ PatientService.java # Manages patients & their processors
┗ 📂 main
┗ MainApp.java # Entry point of the application

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Tech Stack

• Java 17+
• RxJava 3
• Lombok (for clean model classes)

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Why This Project?

This project showcases RxJava mastery with:

• Complex reactive pipelines
• Multi-source data stream handling
• Real-time alerting logic
• Scalable and clean architecture

Perfect for your portfolio or as a base project for healthcare monitoring systems.

Example Output

>> [Paciente P002] [2025-09-03T23:09:48.439379] HR=68.5 bpm | O₂=90.2% | Temp=36.0 °C | Hipoxia detectada
>> [Paciente P001] [2025-09-03T23:09:48.439379] HR=119.1 bpm | O₂=93.5% | Temp=37.9 °C | Taquicardia detectada
>> [Paciente P001] [2025-09-03T23:09:49.387672] HR=75.9 bpm | O₂=93.5% | Temp=37.9 °C
>> [Paciente P002] [2025-09-03T23:09:49.387672] HR=116.5 bpm | O₂=90.2% | Temp=36.0 °C | Taquicardia detectada | Hipoxia detectada
>> [Paciente P002] [2025-09-03T23:09:49.387672] HR=116.5 bpm | O₂=98.5% | Temp=36.0 °C | Taquicardia detectada
>> [Paciente P001] [2025-09-03T23:09:49.387672] HR=75.9 bpm | O₂=93.5% | Temp=36.2 °C
>> [Paciente P001] [2025-09-03T23:09:49.387672] HR=75.9 bpm | O₂=95.7% | Temp=36.2 °C
>> [Paciente P002] [2025-09-03T23:09:49.387672] HR=116.5 bpm | O₂=98.5% | Temp=38.1 °C | Taquicardia detectada | Fiebre detectada
>> [Paciente P002] [2025-09-03T23:09:50.394229800] HR=116.5 bpm | O₂=92.2% | Temp=38.1 °C | Taquicardia detectada | Fiebre detectada