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 Eason wireless module

Wireless data transmission module yl-800mn

Chip solution :EFM32 Sx1278/EFM32 Sx1276
carrier frequency :100mW 500mW 2W
Transmitting power :≤20dBm(100mW),≤27dBm(500W),≤33dBm(2W);
Communication distance :100mW 1km/500mW 2km/2W 3km
Product size Look at the specifications
communication interface Look at the specifications
Product introduction This is a 7-level routing distributed mesh ad hoc network wireless data transmission module. The module adopts efm32 low-power MCU processor, which can support complex mesh ad hoc network protocol and has low power consumption. It supports multiple networking modes: forbidden route discovery / automatic route discovery / forced route discovery / source routing. Users do not need to carry out secondary development of the module, and do not need to control the networking process. They only need to provide data according to the hexadecimal data frame format, which can be easily networking.

Product overview
This is a 7-level routing distributed mesh ad hoc network wireless data transmission module. The module adopts efm32 low-power MCU processor, which can support complex mesh ad hoc network protocol and has low power consumption. It supports multiple networking modes: forbidden route discovery / automatic route discovery / forced route discovery / source routing. Users do not need to carry out secondary development of the module, and do not need to control the networking process. They only need to provide data according to the hexadecimal data frame format, which can be easily networking.


Specification parameters Parameter value
Communication distance The average sight distance of single hop in open field is 100MW 1km, 500MW 2km and 2w3km
Wireless solution Semtech Sx1276(500mW)/Sx1278(100mW、2W) 
modulation technique Lora spread spectrum modulation technology
working frequency 100mW 433/490MHz,500mW 868/915MHz,2W 433MHz
Transmitting power ≤20dBm(100mW),≤27dBm(500W),≤33dBm(2W)
Receiving sensitivity -148dBm
Series Rate Can set 1200BPS ~ 57600bps (9600bps by default)
Interface verification No / odd / even can be set
working voltage DC 5V, 100MW customizable dc3.3v
Emission current ≤100mA(20dBm),≤500mA(27dBm),≤1A(33dBm)
Receiving current ≤15.2mA
Forwarding time 200ms
Routing mode Forbidden route discovery / automatic route discovery / forced route discovery / source routing
Installation mode 1.5mm standard half hole pad, convenient for embedded installation, three modules pin pin
work environment Industrial grade - 40 ~ + 80 ℃, 10% ~ 90% RH, no condensation
Module features Power on to work, no networking process; mesh protocol hierarchical processing, greatly provides stability; built-in watchdog, to ensure long-term reliable and stable operation





Size and structure of 100MW small power module





Size and structure of 500 MW medium power module





Size and structure of 2W high power module

Pin definition and Description:

Serial number name Pin definition
one GND Power ground
two VCC DC5V (dc3.3v can be customized for 100MW)
three PE13 Reserved GPIO port
four PA0 Reserved GPIO port
five PA1 Reserved GPIO port
six PA2 Reserved GPIO port
seven TXD 3.3V level data output pin connected to user's RXD
eight RXD 3 V user input level
nine PB7 Reserved GPIO port
ten PB8 GPIO reserved
eleven RST Hardware reset pin, low level reset
twelve PB11 485-en, 485 chip enable pin, used to convert TTL to 485 signal
thirteen PB13 Led-rx for wireless reception
fourteen PB14 Led-tx to indicate wireless transmission
fifteen GND RF ground
sixteen RF Radio frequency signal receiving and transmitting pin
seventeen GND RF ground
eighteen ADC ADC voltage acquisition port


Product overview
A basic mesh network consists of several slave or node modules and a master or root module. Two way data exchange is carried out between slave module and master module, and messages can be relayed by slave module for many times. The data flow from master to slave is called downlink and vice versa. If master can't send data to master in the most recent way, it will send data to master automatically.


 
Schematic diagram of network data transmission

Only yl-800mn networking module can easily set up mesh network with minimum 2 points to thousands of points. Mesh is a fully distributed symmetric network, which theoretically only needs a single device type. Because it is a distributed peer-to-peer network, there is no center and node in the whole network, and all nodes have equal rights in the network.



Schematic diagram of yl-800mn module networking application

Yl-800mn module can easily build a distributed ad hoc mesh network with excellent performance, mature and stable, which represents the most advanced level of ad hoc network technology. It can replace wired, point-to-multipoint and centralized networking mode, greatly expand the network coverage and network robustness, and effectively reduce equipment costs and maintenance costs.

Yl-800mn module has obvious technical and price advantages in the field of ad hoc network, such as sensor network, wireless meter reading, smart home and other fields. For example, the yl-800mn wireless meter reading scheme can realize the centralized meter reading of the whole network in a very short time by sending a broadcast message. It does not need to read a single instrument one by one, which greatly saves the reading time. In the case of no external interference and isolated nodes, the success rate of single whole network reading of mesh wireless meter reading scheme reaches 100%.