Dragino RS485 to LoRaWAN 訊號轉換器 RS485 LN 920MHz 台灣 LORA頻段

描述

Dragino RS485 to LoRaWAN 訊號轉換器 RS485 LN 920MHz 台灣 LORA頻段

RS485 to LoRaWAN 訊號轉換器 在物聯網近來變得越來越流行，Lora作為物聯網的重要成員，在智慧城市，智慧建築和行業中都有許多應用。對於某些帶有傳感器的Arduino和Raspberry Pi終端設備，該傳感器帶有傳輸數據var RS485接口的傳感器，現在，此RS485到LoraWAN轉換器可以幫助這些設備通過Lora進行通信。

Dragino RS485 to LoRaWAN 訊號轉換器 基於 SX1276 Lora芯片嵌入了RS485到LoraWAN轉換器。該轉換器可以將RS485信號轉換為Lora無線信號，並將其傳輸到Lora網關。對於數據上行鏈路：RS485-LN將用戶定義的命令發送到RS485設備，並從RS485設備獲取返回信息。RS485-LN將根據用戶定義規則處理這些退貨，以獲取最終的有效負載以上傳到LoraWAN服務器。對於數據下行鏈路：RS485-LN在LoRaWAN C類中運行。當從LoRaWAN服務器收到下行鏈路命令時，RS485-LN會將命令從LoRaWAN服務器轉發到RS485設備。

硬件系統：

•  STM32L072CZT6 MCU
•  SX1276無線芯片
•  功耗（不包括RS485設備）：
  • 空閒：32mA @ 12v
  • 20dB發射：65mA @ 12v

型號界面：

• RS485 
• 電源輸入7〜24V DC

RS485 to LoRaWAN 訊號轉換器 規格：

• 頻率範圍：
  • 頻段1（HF）：862〜1020 MHz
  • 頻段2（LF）：410〜528 MHz
• 168 dB最大鍊路預算。
• +20 dBm-100 mW恆定RF輸出vs.
• 可編程比特率高達300 kbps。
• 高靈敏度：低至-148 dBm。 
• 防彈前端：IIP3 = -12.5 dBm。 
• 出色的抗粘連性。 
• 10.3 mA的低RX電流，200 nA寄存器保持。 
• 完全集成的合成器，分辨率為61 Hz。 
• +14 dBm高效功率放大器。
• FSK，GFSK，MSK，GMSK，LoRaTM和OOK調製。 
• 內置位同步器，用於時鐘恢復。 
• 前導檢測。 
• 127 dB動態範圍RSSI。 
• 帶CRC的數據包引擎最大256個字節
•  具有超快AFC的自動RF感應和CAD。 

零件清單

• 1個RS485-LN
• 2 x DIN支架
• 1 x LoRa天線
• 1條程序電纜

資源與下載

• Datasheet
• 原廠技術文件手冊

Dragino RS485 to LoRaWAN Converter (SX1276) RS485-LN-TW920MHz

Key Features

• STM32L072CZT6 MCU for master control
• SX1276 Lora wireless chip
• LoraWAN Class A & Class C protocol
• Flexible rules to connect different RS485 devices
• AT commands to change parameters

Description

IoT is becoming more and more popular these days, Lora as a significant member of IoT, has many applications in the smart city, smart building, and industry. For some terminal devices like Arduino and Raspberry Pi with sensors that transmit data var RS485 interface, now this RS485 to LoraWAN converter can help these devices to communicate by Lora.

The RS485 to LoraWAN converter is embedded by the SX1276 Lora chip. This converter can convert RS485 signals into Lora wireless signals and transmit them to the Lora gateway. For data uplink: RS485-LN sends user-defined commands to RS485 devices and get the return from the RS485 devices. RS485-LN will process these returns according to the user-define rule to get the final payload to upload to the LoraWAN server. For data downlink: RS485-LN runs in LoRaWAN Class C. When there downlink commands from the LoRaWAN server, RS485-LN will forward the commands from LoRaWAN server to RS485 devices.

Specification

Hardware System:

•  STM32L072CZT6 MCU
•  SX1276 Wireless Chip
•  Power Consumption (exclude RS485 device):
  • Idle: 32mA@12v
  • 20dB Transmit: 65mA@12v

Interface for Model:

• RS485
• Power Input 7~ 24V DC.

Lora Spec:

• Frequency Range:
  • Band 1 (HF): 862 ~ 1020 MHz
  • Band 2 (LF): 410 ~ 528 MHz
• 168 dB maximum link budget.
• +20 dBm – 100 mW constant RF output vs.
• Programmable bit rate up to 300 kbps.
• High sensitivity: down to -148 dBm.
• Bullet-proof front end: IIP3 = -12.5 dBm.
• Excellent blocking immunity.
• Low RX current of 10.3 mA, 200 nA register retention.
• Fully integrated synthesizer with a resolution of 61 Hz.
• +14 dBm high-efficiency PA.
• FSK, GFSK, MSK, GMSK, LoRaTM, and OOK modulation.
• Built-in bit synchronizer for clock recovery.
• Preamble detection.
• 127 dB Dynamic Range RSSI.
• Packet engine up to 256 bytes with CRC.
•  Automatic RF Sense and CAD with ultra-fast AFC.

Part List

• 1 x RS485-LN
• 2 x DIN holders
• 1 x LoRa Antenna
• 1 x program cable