Dragino LoRaWAN LiDAR ToF, Руководство пользователя

Страница: 11 / 31

www.dragino.com
LLDS12 LoRaWAN LiDAR ToF Distance Sensor User Manual 11
/
31
2.3 Uplink Payload
LLDS12 will uplink payload via LoRaWAN with below payload format:
Uplink payload includes in total 11 bytes.
2.3.1 Battery Info
Check the battery voltage for LLDS12.
Ex1: 0x0B45 = 2885mV
Ex2: 0x0B49 = 2889mV
2.3.2 DS18B20 Temperature sensor
This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin .
and this field will report temperature.
Example :
If payload is: 0105H: (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
If payload is: FF3FH : (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
2.3.3 Distance
Represents the distance value of the measurement output, the default unit is cm, and the value
range parsed as a decimal number is 0-1200. In actual use, when the signal strength value
Strength.
Example :
If the data you get from the register is 0x0B 0xEA, the distance between the sensor and the
measured object is
0BEA(H) = 3050 (D)/10 = 305cm.
Size
(byte
s) 2 2 2 2 1 1 1
Value BAT Temperature
DS18B20
Distance Distance
signal
strength Interrupt flag LiDAR
temp Message
Type