Package com.flir.thermalsdk.live

Class SignalStrengthHelper

java.lang.Object

com.flir.thermalsdk.live.SignalStrengthHelper

public class SignalStrengthHelper
extends Object

Utility class allowing to measure BLE signal strength.

Constructor Summary

Constructors

Constructor	Description
SignalStrengthHelper()

Method Summary

Modifier and Type	Method	Description
static double	calculateApproximateDistance(int rssi, int txPower)	Calculates an approximate distance (in meters) between BLE beacon and a user device. RSSI signal strength in dBm.
static SignalStrength	calculateBleSignalStrength(int rssi, int txPower)	Calculates an approximate BLE signal level.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

SignalStrengthHelper

public SignalStrengthHelper()

Method Details

calculateBleSignalStrength

public static SignalStrength calculateBleSignalStrength(int rssi,
 int txPower)

Calculates an approximate BLE signal level.

Parameters:

rssi - signal RSSI

txPower - transmit power in dBm. Valid range is [-127, 126]. A value of 0x7F indicates that the TX power is not present.

Returns:

Returns signal strength info.

calculateApproximateDistance

public static double calculateApproximateDistance(int rssi,
 int txPower)

Calculates an approximate distance (in meters) between BLE beacon and a user device.
RSSI signal strength in dBm. Usually can be described as:
- Excellent > -50 dBm
- Fair -50 to -60 dBm
- Weak -60 to -70 dBm
- Bad < -70 dBm

Parameters:

rssi - signal RSSI

txPower - transmit power in dBm. Valid range is [-127, 126]. A value of 0x7F indicates that the TX power is not present.

Returns:

Returns approximate distance (in meters) between BLE beacon and a user device.