miro Insight Airica version (depreciated)

Product Datasheet

Datasheet EN

1MB

Datasheet_Airica.pdf

pdf

57KB

IAQ-Index.png

image

Device Profile for Tesenso IoT Cloud

611B

airica_iaq.json

Decoder/Payload Converter for Tesenso IoT Cloud

Sensor Data Calculations

Humidity

Formula from Sensirion	FullScale Value	Resolution
RH = 100*SRH/(2^16-1)	100	1
%RH	%RH	%RH
note: SRH is a 16 bit unsigned value

Formula from Miromico	Mode 1 (4 samples)	Mode 2 (8 samples)	Mode 3 (120 samples)	FullScale Value	Resolution
RH = 100100sum(SRHi)/(0xFFFF*nb_samples)	RH = 2500*sum(SRHi)/0xFFFF	RH = 1250*sum(SRHi)/0xFFFF	RH = 250sum(SRHi)/(0xFFFF3)	10000	1
0.01 %RH				0.01 %RH	0.01 %RH
note: internally 32 bit unsigned				Result as 16 bit value

Temperature

Formula from Sensirion	ST is a 16 bit value unsigned	Formula at Miromico
T = -45 + 175*ST/(2^16-1)		T = -45100 + 175100sum(STi)/(0xFFFFnb_samples)
°C		0.01°C

CO2

signed 16 bit value ppm

Currently IIR Filtered value is used

=> Check responsiveness without IIR Filter

Air Time Calculations

LoRaTools

Spreading Factor (7..12)	BW (125, 250)	CR (4/(CR + 4)	Preamble Length (LoRa Default: 8)	Explicit header (default 1)	CRC (default 2)	data	Preamble	Symbol	Air Time (ms)	Duty Cycle from Calculator (minutes)
12	125	1	8	ok	ok	15	401.41	32.77	1155.07	01:56
12	125	1	8	ok	ok	11	401.41	32.77	1150.98	01:56
12	250	1	8	ok	ok	11	401.41	32.77	577.54	00:58
11
10
9
8
7	125
7	250					1600				01:58

Cycle period	Duty Cycle 1%
120	1.2

Mode (preset)	Sampling Periode in sec	Up-Link Periode in sec	Air Time max in sec
0
1	30	120	1.2
2	60	240	2.4
3	60	3600	36

Note: EdenSenses agrees to average the samples during the Up-Link period

Uplink documentation

General Message Format

Name	Unit	Range	Bytes
MsgType	Enum		0..127
Data depending on MsgType

Enom definitions

MsgType Enum:

0	Reserved
1	SensorData1
2	SensorData2
3	Config Data
4	Vbat
...
123	HW_ID_UL
124	MCU_ID_UL
125	Firmware_hash
	Port for ID-s (123-125) is 200

Mode Enum

0	Custom
1	Fast: Sampling Period 30sec, Uplink Period 120 sec
2	Medium: Sampling Period 60 sec, Uplink Period 240 sec
3	BatterySaving: Sampling Period 60 sec, Uplink Period 3600 sec

Message Types

1: SensorData1

Name	Unit	Bytes	Range	Invalid value
MsgType	Enum	1
Mode	Enum	1	0.255
CO2	ppm	HighByte	Unsigned	0xFF
CO2	ppm	LowByte	Unsigned	0xFF
Pressure	Pa	HighByte	Unsigned	0xFF
Pressure	Pa	MedByte	Unsigned	0xFF
Pressure	Pa	LowByte	Unsigned	0xFF
Temp	0.01°C	HighByte	Signed	0x7F
Temp	0.01°C	LowByte	Signed	0xFF
Humidity	0.01% RH	HighByte	Unsigned	0xFF
Humidity	0.01% RH	LowByte	Unsigned	0xFF
		each column is one byte. byte 1 is the msgtype

2: SensorData2

Name	Unit	Bytes	Range	Invalid value
MsgType	Enum	2
Mode	Enum		0.255
CO2	ppm	HighByte	Unsigned	0xFF
CO2	ppm	LowByte	Unsigned	0xFF
Pressure	Pa	HighByte	Unsigned	0xFF
Pressure	Pa	MedByte	Unsigned	0xFF
Pressure	Pa	LowByte	Unsigned	0xFF
Temp	0.01°C	HighByte	Signed	0x7F
Temp	0.01°C	LowByte	Signed	0xFF
Humidity	0.01% RH	HighByte	Unsigned	0xFF
Humidity	0.01% RH	LowByte	Unsigned	0xFF
VOC		HighByte	Unsigned	0xFF
VOC		LowByte	Unsigned	0xFF

note: Accuracy of the IAQ value is in the 2 MSB bits

3: ConfigData

Name	Unit	Bytes	Range
MsgType	Enum	3
measure interval	sec	2	HighByte
measure interval	sec	2	LowByte
tx interval	multiple of measure interval	1
flags		1
co2 period	sec	2	HighByte
co2 period	sec	2	LowByte
co2_num		2	HighByte
co2_num		2	LowByte
co2_abc		2	HighByte
co2_abc		2	LowByte

123: HW_ID_UL

Name	Unit	Bytes	Range
MsgType	Enum	123
HWID	version		0..7

124: MCU_ID_UL

Name	Unit	Bytes	Range
MsgType	Enum	124
MCU_ID		HighByte
MCU_ID
MCU_ID
MCU_ID		LowByte

125: Firmware_hash_UL

Name	Unit	Bytes	Range
MsgType	Enum	125
Firmware version and hash	String	Size varies

sample Uplink message

Uplink port = 15

{
    "cmd": "gw",
    "seqno": 1131600,
    "EUI": "10CE45FFFE00580B",
    "ts": 1660293390867,
    "fcnt": 249791,
    "port": 15,
    "freq": 867700000,
    "toa": 61,
    "dr": "SF7 BW125 4/5",
    "ack": false,
    "gws": [{
        "rssi": -49,
        "snr": 10.8,
        "ts": 1660293390867,
        "time": "2022-08-12T08:36:30.858359Z",
        "gweui": "FCC23DFFFF0B95EC",
        "ant": 0,
        "lat": 46.8076885,
        "lon": 7.100528
    }],
    "bat": 254,
    "data": "010101f60179aa0a050f51",
    "_id": "62f6110fd675b83ec5b794b7"
}

Downlink documentation

Message Format

Name	Unit	Bytes	Range	Downlink message port
MsgType	Enum		128..255	6

• Data depending on MsgType

Enums

MsgType Enum

128	Change Mode
129	Change Measurement Period
130	Change Accumulated measurements
131	CO2: Forced ABC calibration
132	CO2: Set auto-calibration frequency
133	CO2: IIR filter enable/disable
134	CO2: Set calibration CO2 level (Target calibration)
...
251	HW_ID_Request
252	MCU_ID_Request
253	Firmware_request
254	Reserved
255	Reset_request
	Port for requests (251-255) is 200
	For request, there are no message, just the MsgType

Mode Enum

0	Custom
1	Fast: Sampling Period 30 sec, Uplink Period 120 sec
2	Medium: Sampling Period 30 sec, Uplink Period 240 sec
3	BatterySaving: Sampling Period 30 sec, Uplink Period 3600 sec

SamplePeriod

0
1	5 sec
2	2 * 5 sec
3	3 * 5 sec

NumberofMeasurement

0

1

2

...

120

Message Types

ChangeMode

Name	Unit	Bytes	Range
MsgType	Enum	1	128
Mode	Enum	1	0..3

MeasurementPeriod

Name	Unit	Bytes	Range
MsgType	Enum	1	129
Period			0..255

NumberOfMeasures

Name	Unit	Bytes	Range
MsgType	Enum	1	130
NumOfMeas		1	0..120

ForceAbcCalibration

Name	Unit	Bytes	Range
MsgType	Enum	0x83	131

AutoCalibrationFrequency

Name	Unit	Bytes	Range	default
MsgType	Enum	0x84	132
auto-calibration freq.	hour	High	1..65534	336 (2 weeks)
auto-calibration freq.	hour	Low	1..65534

IIRFilterEnable

Name	Unit	Bytes	Range
MsgType	Enum	0x85	133
IIR Enable/Disable	1:enable/0:disable	1	0..1

CalibrationLevel

Name	Unit	Bytes	Range
MsgType	Enum	0x86	134
calibration CO2 level	ppm	High	400..5000
calibration CO2 level	ppm	Low	400.5000