deZem HarvyLR-360 Panduan Pengguna Dan Data Teknis - Halaman 5

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User manual IoT sensor HarvyLR

4 Functional Description

The HarvyLR records AC and DC currents via LoRaWAN. The intelligent event filter integrated in the sensor provides
metering series (inrush currents, etc.) accurate to the second at a defined maximum rate. Even a signal current (AC
or DC) of only 0.15 mA on average is sufficient to record and send metered values every 10 minutes on average. Even
higher data rates are possible with larger input currents.
Optionally, the HarvyLR can be integrated into the deZem DataSuite, see
ries are immediately available online for further purposes.
Metering interval
Isec (avg-long)
<= 30 mA OR Vsys > FastSampleLevel
>= 20 mA
>= 10 mA
>= 5 mA
>= 2 mA
Else
LoRaWAN Payload encoding (Port 1)
Name
Type
Version
uint8[3]
Shunt Value
Amplifier Gain
Vsys (current)
Vsys (min)
Vsys (max)
Vamp (rms)
Isec (current)
Isec (avg-long)
Isec (avg-
short)
Bytes
Description
0–2
Firmware version
uint8
3
Value of shunt resistance on
hw 1/10 Ohm
uint8
4
Gain, typical 100x
uint16
5–6
System voltage or charge of 0.47 F su-
percaps; system voltage in 1/10 mV
uint16
7–8
Minimum system voltage since last
LoRaWAN uplink package; system
voltage in 1/10 mV
uint16
9–10
Maximum system voltage since last
LoRaWAN uplink package; system
voltage in 1/10 mV
uint16
11–12
Output voltage (RMS value) of ampli-
fier (x100 Gain) in 1/10 mV
uint16
13–14
RMS current (calculated from shunt
value and Vamp);
Secondary current CT in 1/100 mA
uint16
15–16
Moving Average Filter since Power Up
above Isec (current); calcula-
tion (exponent=4): Filtered Value =
(15 * oldValue + newValue) / 16; sec-
ondary current CT in 1/100 mA
uint16
17–18
Average value filter with Reset at last
LoRaWAN upload
(max. 600 values); secondary current
CT in 1/100 mA
chapter
Metering interval
1 sec.
3 sec.
5 sec.
10 sec.
20 sec.
30 sec.
Page 5 of 9
5.3. There, its metered value histo-
Example
Value range
1, 5, 1 v1.5.1
10 1 Ohm
1 0.1 Ohm
29470
<= 3600 mV
29 47 mV
2.947V
35991
3.5991 V
0...36 mA
3101
31.01 mA
(1 Ohm)
12034
0...360 mA
120.34 mA
(0.1 Ohm)
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