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Dragino LoRa Shield Arduino 無線通訊擴展板 915 MHZ

Dragino LoRa Shield Arduino 無線通訊擴展板 915 MHZ

貨號:CEE0021


NT$651
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*不含圖四、圖五的Arduino控制板*


【產品介紹】


LoRa是一款為IoT和IoT應用而創造的廣域網絡無線射頻技術,WiFi和BLE的連接範圍在室內通常是幾十米,室外幾百米,而LoRa的範圍達到數千米, Lora的低通信成本和低功耗與廣受歡迎的易於部署的開源軟硬件Arduino結合使用是最佳選擇。

Dragino LoRa Shield能讓您發送的數據達到極長的傳輸範圍,並且在超遠距離擴頻通信和高抗干擾性的同時儘量減少電流消耗。這塊擴展板使用 rfm98w 無線收發模組,讓您可以輕鬆地應用在各種專案項目上,例如:智慧農場灌溉系統、智慧電錶、智慧城市、智慧型手機偵測、建築物自動化系統等等。

使用RF專利LORA™調製技術的LoRa Shield以低成本達到極高靈敏度,適合各種要求穩定性高的與廣的應用做結合,在範圍、抗干擾與耗能上都比傳統的模組更加優秀。

The Dragino LoRa Shield is a long range transceiver on a Arduino shield form factor and based on Open source library.The Lora Shield allows the user to send data and reach extremely long ranges at low data-rates.It provides ultra-long range spread spectrum communication and high interference immunity whilst minimising current consumption.

The LoRa Shield based on RFM95W/RFM98W targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, smartphone detection, building automation, and so on.

Using Hope RF’s patented LoRaTM modulation technique the Lora Shield can achieve a sensitivity of over -148dBm using a low cost crystal and bill of materials. The high sensitivity combined with the integrated +20 dBm power amplifier yields industry leading link budget making it optimal for any application requiring range or robustness. LoRaTM also provides significant advantages in both blocking and selectivity over conventional modulation techniques, solving the traditional design compromise between range, interference immunity and energy consumption.

These devices also support high performance (G)FSK modes for systems including WMBus, IEEE802.15.4g. The Lora Shield deliver exceptional phase noise, selectivity, receiver linearity and IIP3 for significantly lower current consumption than competing devices.


【產品規格】


  • 168 dB maximum link budget.
  • +20 dBm - 100 mW constant RF output vs.
  • +14 dBm high efficiency PA.
  • 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.
  • FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
  • Built-in bit synchronizer for clock recovery.
  • Preamble detection.
  • 127 dB Dynamic Range RSSI.
  • Automatic RF Sense and CAD with ultra-fast AFC.
  • Packet engine up to 256 bytes with CRC.
  • Built-in temperature sensor and low battery indicator.
  • Compatible with 3.3v or 5v I/O Arduino Board.
  • Frequency Band: 915MHz
  • Low power consumption
  • Compatible with Arduino Leonardo, Uno, Mega, DUE
  • External Antenna via I-Pex connector

  • 【文件下載】


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