DL-TRS12

Product Datasheet

Datasheet EN

815KB

Decentlab-DL-TRS12-datasheet.pdf

pdf

Payload

https://github.com/decentlab/decentlab-decoders

Device Profile for Tesenso IoT Cloud

Decoder/Payload Converter for Tesenso IoT Cloud

Device Labels

in manual	dataKey	dataType	dataFormat
VWC (volumetric water content) raw value		telemetry	float
Soil temperature	temperature	telemetry	float
Electrical conductivity		telemetry	float
Battery voltage	batteryVoltage	telemetry	float

Uplink documentation

Sensor Data message Format

Message:

Header	Sensor 0 data (optional)	Sensor 1 data (opt.)	...	Sensor 15 data (opt.)

• Message length is variable, depending on which sensor data are included. Minimum length is 5 bytes (header only). Maximum length is 5 bytes + all sensor data (see below).

• Integers are big endian: MSB first byte, LSB last byte.

Header

Version	Device ID	Flags

• Version: 1 byte; version = 2 for current protocol version.

• Device ID: 2 bytes; 0...65535.

• Flags: 16 bits: flag 15 | flag 14 | … | flag 0 (LSB).

• The flags indicate, if data of the respective sensors are included in the message or not: Flag n == 1: sensor n data included; flag n == 0: not included.

Details

Field	Parameter Name	Type	Conversion	Unit
Header	Version	uint8
Header	Device ID	uint16
Header	Flags	uint16
Sensor 0	VWC raw value (VWCRAW)	uint16	x / 10
Sensor 0	Soil temperature	uint16	(x − 32768) / 10	°C
Sensor 0	Electrical conductivity	uint16	x	μS/cm
Sensor 1	Battery votage	uint16	x / 1000	V

Volumetric water content (VWC) calculation for mineral soil (see sensor manual by Meter Group): VWC = VWCRAW · 0.0003879 − 0.6956 [m3 /m3 ].

Apparent dielectric permittivity (dp) can be used to determine VWC using external published equations such as the Topp equation (Topp et al. 1980): dp = (0.000000002887 · (VWCRAW)^3 − 0.0000208 · (VWCRAW)^2 0.05276 · (VWCRAW) − 43.39)^2

Electrical conductivity units conversion: 1 μS/cm = 0.001 dS/m.

sample Message (hex) (all sensor data included):

0210d3000346be813d00000c80

Field	Parameter Name	Conversion	Unit
02	Version	2
10d3	Device ID	4307
0003	Flags	0b0000000000000011
46be	VWC raw	1811.0
813d	Soil temperature	31.7	°C
0000	Electrical conductivity	0	μS/cm
0c80	Volumetric water content	3.200	V
	Volumetric water content	0.0069	m^3 /m^3
	Dielectric water content	1.1831

Downlink documentation