Ambiance

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The Ambiance

The AMBIANCE is a complete LoRaWan™ sensor that can measure five different things:

temperature, humidity, rate of presence, brightness, and CO2 as an option. This product can run on batteries,

which allows for more flexibility in its positioning. In order to measure CO2, an EE893 sensor made by

E+E must be connected to the AMBIANCE. Its measuring cell uses dual-wavelength E+E infrared technology

NDIR, which compensates for the effects of aging, is particularly resistant to pollution and offers

great long-term stability.

The AMBIANCE sensor integrates all the functions necessary for the analysis of environmental and behavioral data, into a single product : Temperature / Humidity / Presence / Luminosity.

The AMBIANCE periodically sends its sensor measurements via a LoRaWan™ radio link. In order to configure the AMBIANCE sensor for a LoRaWan™ network, the unique encrypted identification code indicated on each product (DevEUI) is required.

The AMBIANCE periodically sends its sensor measurements via a LoRaWan™ radio link. In order to configure the AMBIANCE sensor for a LoRaWan™ network, the unique encrypted identification code indicated on each product (DevEUI) is required. The AMBIANCE sensor transmits its data in raw format on different public and private LoRaWAN™ networks

Payload descriptions

The AMBIANCE sensor transmits its data in raw format on different public and private LoRaWAN™
networks. The section below shows you how to decode the frames (Payload) sent by the AMBIANCE.

Periodic frames

The periodic frames contain the data measured by the AMBIANCE sensor.
Example of a periodic transmitted frame (HEXADECIMAL):

00 6A0B 04 60 08 A802 10 2E04 14 0500

 

Explaination of the frame structure

Index (in bytes)NameExampleDescription
1Frame type00Data sent periodically Other possible values: 0x01: Data sent during an event 0x10: Sensor status data
2Payload size0ENumber of bytes sent. 0x0E in hexadecimals gives 14 bytes (excluding header: Frame type and Payload Size)
3Object Type00Object Type 0x00: Temperature
4-5Data6A0B6A0B – Little endian encoded value 0x0B6A: 2922 x 0.01°C = 29.22°C
6Object Type04Object Type 0x04: Humidity
7Data600x60: 96 x 0.5%RH = 48%RH
8Object Type08Object Type 0x08: CO2
9-10DataA802A802 – Little endian encoded value 0x02A8: 680 PPM
11Object Type10Object Type 0x10: Brightness
12-13Data2E042E04 – Little endian encoded value 0x42E: 1070 lux
14Object Type14Object Type 0x14: Presence This is an index that changes and indicates the number of seconds of presence in front of the sensor.
15-16Data05000500 – Little endian encoded value 0x0050: 80 x 10s: 800s Detection of cut in the power supply to presence sensor: If the rollover bit (MSB) returns to 0, or if the index value received is lower than the value previously received and that the rollover bit is 0.

Status frame

he status frames contain additional information about the sensors (battery level, firmware version …).
Example of a transmitted (HEXADECIMAL) status frame:

00 02 02 0041 04 05 08 3C00

 

Explanation of the frame structure :

Index (in bytes)NameObjectDescription
1Frame type10Status frame
2Payload size0ANumber of bytes sent. 0x0A in hexadecimals gives 10 bytes (excluding header: Frame type and Payload Size)
3-4Type of sensor00 020x02: Ambiance Other possible values: 0x00: Environment v0x01: Presence 0x02: Ambiance 0x10: Pulse 0x20: TyNess
5-7Firmware version02 04 010x04: Minor MSB version 0x01: Major LSB version i.e. firmware version 1.4
8-9Battery level04 050x05: Battery level: normal Other possible values: 0x08: Mains power supply 0x07 -> 0x02: Battery level normal 0x01: Level low 0x00: Level critical Periodicity of transmissions
10-12Periodicity08 3C 00Periodicity of transmissions in seconds. Value of 16-bit code in little endian to multiply by 10. 3C 00 => 0x003C hexadecimal i.e. 60 decimal and 60 x 10 = 600 seconds i.e. a transmission every 10 minutes.

Technical Specifications

FREQUENCY
868MHz

UNIQUE SERIAL NUMBER
oui

MAXIMUM TRANSMISSION POWER
25mW

COMMUNICATION RANGE
up to 15km in open areas

AREA OF APPLICATION:
Indoors

OPERATING TEMPERATURE
From 0 to 60°C

STORAGE TEMPERATURE
From -20°C to +70°C

OPERATING HUMIDITY
From 10 to 80 %, without condensation

MAXIMUM ALTITUDE
2 000 m

POWER SUPPLY VOLTAGE FLUCTUATION
±10% of the nominal voltage

DIMENSIONS (H X L X D)
86 x 86 x 25.5 mm

CHASSIS MATERIAL
ABS

WEIGHT
80 g (without batteries

PROTECTION RATING
IP20

VOLTAGE
3.6 VDC

LIFE SPAN ON BATTERY POWER
2 to 5 years

VOLTAGE USING EXTERNAL POWER
5 to 12 VDC

TEMPERATURE
– 40 to 60°C

ACCURACY
0,3°C

HUMIDITY
0 to 100%

ACCURACY
1%

BRIGHTNESS
0 to 65535Lux

CO2 LEVEL
0 to 10000PPM

PRESENCE MEASUREMENT RANGE
5 to 6 m

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