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Power measurement & estimation for TI15.4 stack
In order to estimate the power consumption of your device Texas Instruments provides the TI-15.4-Stack Battery Life Calculator, which also provides an easy way to optimize the battery lifetime of your device.
After doing the optimizing one can also measure the power consumption with our out of the box examples and the Energy Trace- feature we provide with our Launchpads, to get a rough overview on the power consumption of your device, at the beginning of your development process.
To use our out of the box example for power measurement there are few steps to do:
This disables the UART, which is used to display the connectivity information. Disabling this interface reduces the power consumption as it avoids the device to enter Standby () mode.
The jumper settings are shown in the picture below:
Some measurements we did are shown in the he table below:
Frequency: 868 MHz, 0db TX-power, 50kbps/2-GFS
Network Setup |
Energy Trace |
Battery Life Calculator |
Non Beacon Mode 10s polling rate 10s report rate |
39.7µA |
37.4µA |
Beacon Mode 10s polling rate 10s report rate |
41.1µA |
39.2µA |
Non Beacon Mode 1s polling rate 1s report rate |
405.2 µA |
364.7 µA
|
Non Beacon Mode 30s polling rate 30s report rate |
14.4µA |
13.6µA |
These measurements can give a valuable indication on the power consumption of our Sensor/Collector example.