📦 Passive Vital Signs Monitoring Tool | 无感生命体征监测分析工具 — Contactless Vital Signs Monitor — 无感生命体征监测

Overview

This tool enables non-contact detection of vital signs including heart rate, respiration, blood oxygen (SpO2), and heart rate variability (HRV) without requiring any wearable devices.

Technical Approaches

Remote Photoplethysmology (rPPG)

• Uses standard camera to detect subtle skin color changes caused by blood flow
• Analyzes pixel variations in facial regions
• Works best with good lighting conditions

Millimeter-wave Radar

• Detects chest movement during breathing
• Can measure heart rate through chest wall vibrations
• Works in various lighting conditions

Use Cases

• Remote patient monitoring
• Sleep quality analysis
• Elderly care and fall detection
• Driver fatigue monitoring
• Baby monitoring

Limitations

• Accuracy affected by lighting and motion
• Not a substitute for medical-grade equipment
• Requires proper camera angle and distance

Best Practices

• Ensure adequate lighting
• Keep subject relatively still
• Position camera at appropriate distance
• Allow warm-up time for accurate readings

快速开始

# 安装依赖
npm install contactless-vital-signs
# 基本用法
const { VitalSignsMonitor } = require('contactless-vital-signs');
const monitor = new VitalSignsMonitor({
  method: 'rppg', // or 'radar'
  cameraId: 0
});
monitor.on('data', (vitals) => {
  console.log('Heart Rate:', vitals.heartRate);
  console.log('SpO2:', vitals.spo2);
  console.log('Respiration:', vitals.respiration);
});
monitor.start();

API Reference

VitalSignsMonitor

事件

• data: 返回实时生命体征数据
• error: 错误事件
• stop: 监测停止事件