AprilBeacon based on DA14580

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Introduction

  • iBeacon Certified - All features of iBeacon supported.
  • ProximityUUID/major/minor/advertising interval configuable
  • Maintenance Cost and Maximum battery life
    • Using Dialog DA14580 chips, in same Tx power and Advertising interval configuration, double or triple battery lifetime of Nordic nrf51822 chips. Six battery lifetime of TI CC254x chips.
    • Fine tuned antenna, optimized transmit strength, covering same range using lower Tx power.
    • CR2450 coin cell battery (500mAh)

Technology Specification

Name Parameters
Chip Dialog DA14580
Dimensions Diameter 31mm, Thickness 9mm
Protocol standard Bluetooth® 4.0 Through the iBeacon certification
System Requirements iOS7.0 or above/ Android 4.3 or above
Security Suport password for configure parameters
TX Power 0dBm
Transmission Range Up to 35m
Broadcast Frequency (Broadcasting time interval) Adjustable (100~1285ms)
Supply Voltage 3.0V
Battery CR2450 Battery

Features

Low power consumption

The power consumption of the different advertising events and the sleep modes of the Beacon device. The tests have been executed using the output power set to 0 dBm.

The Beacon device uses the non-connectable advertising mode (Beacon mode). In this mode, the AprilBeacon DA transmits advertising packets in all three advertising PHY channels without listening for packet reception. Avoiding the reception process results in improved power consumption compared with connectable advertising mode. When using connectable advertising (Peripheral mode), the Rx slots are used, which has an impact on the energy consumption as shown in upper table.

Event Average current Duration Charge
Beacon mode (non-connectable advertising) 967uA 9.85ms 9.53uC
Peripheral mode (connectable advertising) 967uA 12.56ms 12.15uC
Connection event 590uA 10.02ms 5.92uC
Extended sleep mode 1.34uA - -


Based on the different scenarios and the power consumption measurements shown in upper talbe, the expected lifetimes of CR2477 and CR2032 coin cell batteries have been calculated.

Scenario Advertising interval Battery lifetime CR2477 (1000mAh) Battery lifetime CR2032 (240mAh)
1 Tx peripheral mode per 3 Tx BEACON events 100ms 13.5 months 3.5 months
1 Tx peripheral mode per 3 Tx BEACON events 500ms 60 months 17.5 months
1 Tx peripheral mode per 3 Tx BEACON events 1000ms 120 months 35 months

Configurable by App AprilBeacon

Download app AprilBeacon from Apple App Store for configure AprilBeacon.