Introduction to EBYTE's E73-Based Safety Solution

EBYTE presents an advanced fall detection and emergency alert system built on the E73-2G4M04S1B Bluetooth Low Energy module, offering reliable protection for elderly individuals living independently.

Key Features of E73-2G4M04S1B Implementation:

✔ nRF52832 BLE 5.0 Chipset - 512KB Flash, 64KB RAM for advanced algorithm processing ✔ 4dBm Transmission Power - Stable connectivity within 50m indoor range ✔ Multi-sensor Integration - Supports accelerometer, gyroscope and heart rate sensors ✔ Compact Design - 17.5×28.7mm module size enables wearable form factor ✔ Low Power Consumption - 4dBm output with optimized power management ✔ IP67 Protection - Water and dust resistant for daily wea

System Architecture & Technical Implementation

Core Components:

  • Main Controller: E73-2G4M04S1B (nRF52832)

  • Motion Sensors: 6-axis IMU (accelerometer + gyroscope)

  • Wireless Protocol: Bluetooth 5.0 (BLE)

  • Emergency Button: Integrated tactile switch with debounce circuit

  • Power System: 300mAh Li-Po battery with charging circuit

Technical Specifications:

Parameter

Specification

Chipset

nRF52832 (E73-2G4M04S1B)

Wireless Standard

BLE 5.0

Transmission Power

4dBm (configurable)

Receiver Sensitivity

-96dBm @1Mbps

Operating Voltage

2.0-3.6V

Current Consumption

5.3mA (TX), 4.4mA (RX)

Sleep Current

<1μA

Interface

UART/I2C/SPI/GPIO

Dimensions

17.5×28.7×2.4mm

Fall Detection Algorithm

  • Motion Pattern Recognition: Analyzes acceleration and angular velocity data

  • Impact Detection: Identifies sudden changes in movement patterns

  • Post-Fall Monitoring: Detects prolonged inactivity after impact

  • False Positive Filter: Distinguishes between falls and normal activities

System Functionality

Automatic Fall Detection

  • Real-time monitoring of movement patterns

  • Impact detection with 95% accuracy

  • Auto-alert transmission via BLE to gateway/hub

Manual Emergency Button

  • One-touch activation for immediate help

  • Two-stage confirmation (short/long press)

  • LED visual feedback for operation status

Wireless Connectivity

  • BLE 5.0 connection to home gateway (E810-TTL-01)

  • Mesh networking capability (with E73-2G4M08S1E)

  • Cloud integration through EBYTE IoT platform

Comparative Analysis

Feature

EBYTE E73 Solution

Market Average

Detection Accuracy

95%

85%

Response Time

<5s

10-15s

Battery Life

7 days

3-5 days

Wireless Range

50m (indoor)

30m

Water Resistance

IP67

IP54

Certification

CE/FCC/BLE 5.0

BLE 4.2

Implementation Guide

 Hardware Integration:

  1. Sensor Interface: Connect IMU via I2C to E73 module

  2. Button Circuit: GPIO interrupt configuration

  3. Power Management: Low-power design optimization

Software Configuration:

// Example BLE service initialization ble_fds_init_t fds_init = {     .evt_handler = on_fds_evt,     .error_handler = on_fds_error,     .feature = BLE_FDS_FEATURE_FALL_DETECTION }; err_code = ble_fds_init(&fds_init, &m_fds);

Cloud Integration:

  • EBYTE IoT platform API integration

  • Alert notification setup (SMS/Email/App)

Certification & Compliance

  • RF Certification: FCC/CE/RoHS

  • Wireless Protocol: Bluetooth 5.0 Qualified

  • Medical Compliance: IEC 60601-1 (Pending)

Ordering Information & Support

Available Products:

  • EWB101-FD: Fall detection bracelet (E73-2G4M04S1B based)

  • EWB102-SOS: Emergency pendant (E73-2G4M04S1A based)

  • EWH200-GW: BLE-to-WiFi gateway (E810-TTL-01 based)