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Public Safety / Government
|State Police Department - India|
10 months
8 engineers

Smart Police Wearable: Real-Time Officer Health Monitoring & SOS Alert System

Development of a rugged smart watch for police officers featuring SpO2, heart rate, body temperature, environmental sensors (temperature, humidity, air quality), GPS tracking, and SOS alert system. Deployed to 15,000+ officers for real-time health monitoring and emergency response.

15,000+
Officers Deployed
7 Sensors
Health & Environmental
< 3 sec
SOS Response Time
72hr
Battery Life
Smart Police Wearable: Real-Time Officer Health Monitoring & SOS Alert System - Rapid Circuitry embedded systems case study hero image

The Challenge

A state police department needed a comprehensive wearable solution to monitor officer health during duty, especially in extreme conditions, and provide instant emergency alerts when officers face life-threatening situations.

Officer Health Risks

Police officers face heat stroke, exhaustion, and cardiac events during demanding duties. No system existed to monitor their health in real-time.

Impact: 200+ heat-related incidents/year

Hazardous Environments

Officers often work in environments with poor air quality, extreme temperatures, or chemical hazards without awareness of the risks.

Impact: Long-term health effects

Emergency Response Delays

When officers face danger, calling for backup takes precious seconds. An automatic, instant SOS system was needed.

Impact: Critical response time gap

Rugged Requirements

The device needed to survive impacts, water, dust, and continuous 12+ hour shifts in challenging Indian climatic conditions.

Impact: IP68 + MIL-STD durability

Our Solution

We developed a military-grade smart watch with comprehensive health monitoring, environmental sensing, GPS tracking, and a one-touch SOS system that instantly alerts command centers and nearby officers.

System Architecture

End-to-end officer safety platform with wearable device, mobile app, and command center dashboard.

Smart Watch Device

  • PPG sensor for SpO2 and heart rate
  • Infrared body temperature sensor
  • Environmental temp & humidity sensor
  • Air quality sensor (PM2.5, VOC, CO)
  • GPS + GLONASS positioning
  • SOS button with haptic feedback
  • BLE 5.0 + 4G LTE connectivity

Officer Mobile App

  • Real-time health dashboard
  • Environmental hazard alerts
  • Team member locations
  • Voice communication
  • Incident reporting

Command Center

  • Real-time officer tracking map
  • Health anomaly alerts
  • SOS incident management
  • Resource dispatch system
  • Historical analytics & reporting

Custom Hardware Design

MCUnRF9160 (LTE-M + GPS)
SpO2/HR SensorMAX30102 PPG
Body TempMLX90614 IR sensor
Env Temp/HumiditySHT40 (±0.2°C accuracy)
Air QualityBME680 + PMS5003 PM sensor
Battery450mAh Li-Poly
Display1.4" AMOLED always-on
ProtectionIP68 + MIL-STD-810H

Real-Time Monitoring Firmware

  • Continuous SpO2 monitoring with 94-100% accuracy
  • Heart rate tracking with arrhythmia detection
  • Body temperature monitoring every 30 seconds
  • Environmental hazard detection and alerts
  • Air quality index calculation (AQI)
  • GPS tracking with configurable intervals
  • One-touch SOS with fall detection
  • Encrypted communication (AES-256)
  • 72-hour battery optimization algorithms

Implementation Timeline

Phase 1: Requirements & Design

6 weeks
  • Field study with officers across units
  • Use case analysis for different duty types
  • Security and encryption requirements
  • System architecture design

Phase 2: Hardware Development

14 weeks
  • Multi-sensor PCB design (8-layer)
  • Ruggedized enclosure design
  • Antenna optimization (LTE + GPS)
  • MIL-STD-810H testing
  • 4 prototype iterations

Phase 3: Firmware Development

12 weeks
  • Real-time sensor fusion algorithms
  • Power optimization for 72hr battery
  • SOS system with redundancy
  • Secure boot and encrypted OTA

Phase 4: Platform Development

10 weeks
  • Command center dashboard
  • Mobile app for officers
  • Backend infrastructure (AWS GovCloud)
  • CAD system integration

Phase 5: Pilot & Deployment

8 weeks
  • 500-officer pilot program
  • Field testing in multiple conditions
  • Training program development
  • Phased rollout to 15,000 officers

Results & Impact

The Smart Police Wearable has been deployed to 15,000+ officers, enabling real-time health monitoring and significantly improving emergency response times. The system has directly contributed to saving officer lives.

Officers Protected

State-wide deployment

SOS Response Time

Alert to command center

Battery Life

6 duty shifts per charge

Heat Incidents Prevented

Early warning alerts

Lives Saved

Direct SOS interventions

Avg Backup Arrival

Faster response time

“This wearable has revolutionized how we protect our officers. The early heat stress warnings alone have prevented hundreds of incidents. When an officer triggers SOS, we know their exact location and health status instantly - that's saved lives.”

Director General of Police

State Police Department

Technologies Used

nRF9160MAX30102MLX90614SHT40BME680PMS5003LTE Cat-M1BLE 5.0React NativeNode.jsAWS GovCloudMQTT

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