Table 4. Experimental results summery using 18650 4800 mAh 3.7V lithium-ion battery.
Power mode | Protocol | Node state | Power consumption | Node lifetime | Response time |
---|---|---|---|---|---|
Active | BLE | Server | 76.4 mA | 62 HRS 49 MIN | 15 ms |
BLE | Client | 74 mA | 64 HRS 51 MIN | ||
ESP-NOW | Sender | 129 mA | 37 HRS 12 MIN | 4 ms | |
ESP-NOW | Receiver | 121 mA | 39 HRS 40 MIN | ||
Deep-sleep | ULP co-processor is powered on | - | 150 µA | 32000 HRS | - |
ULP sensor- monitored pattern | - | 100 µA | 48000 HRS | - | |
RTC timer +RTC memory | - | 10 µA | 480000 HRS | - |