LoRa/GPS Shield For Arduino LoRa Bee 含 GPS 衛星定位模組 868MHz 無線射頻擴展板

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LoRa/GPS Shield 868MHz For Arduino LoRa 含 GPS 衛星定位模組 無線射頻擴展板

LoRa / GPS Shield是用於與Arduino一起使用的LoRa™/ GPS 的擴展板。該產品適用於有興趣開發LoRa™/ GPS解決方案的用戶。LoRa / GPS Shield由LoRa / GPS Shield主板和LoRa BEE。

LoRa部分，LoRa / GPS Shield採用SX1276 / SX1278收發器.LRRa / GPS Shield的收發器採用了LoRa™長距離調製解調器，可提供超長距離擴頻通信和高抗干擾能力，同時最小化電流消費。與常規調製技術相比，LoRa™在阻塞和選擇性方面也具有顯著的優勢，解決了傳感器在範圍，抗干擾能力和能量消耗之間的折衷。在GPS部分，L80 GPS（基於MTK MT3339）的添加是專為通過串行端口連接到GPS的應用程序而設計的，如定時應用或需要GPS信息的一般應用。該GPS模塊可以計算和使用存儲在內部閃存中的星曆數據（長達3天）自動預測軌道，因此即使在低功耗的室內信號水平下，屏蔽​​也可以快速固定位置。通過AlwaysLocate™技術，LoRa / GPS Shield可以自適應地調整開/關時間，根據環境和運動條件實現定位精度和功耗之間的平衡。GPS還支持自動天線切換功能。它可以實現內部貼片天線與外部主動天線的切換。

• 頻段：868MHz
• 低功耗
• LoRa™調製解調器
• FSK，GFSK，MSK，GMSK，LoRa™和OOK調製
• 前導檢測
• 波特率可配置
• 內置溫度傳感器和低電量指示器
• 優異的阻斷免疫力
• 自動射頻感應和超快速AFC的CAD
• 支持DGPS，SBAS（WAAS / EGNOS / MSAS / GAGAN）
• 內部貼片天線與外部有源天線之間的GPS自動切換
• PPS VS. NMEA可以在時間服務中使用
• 支持SDK命令
• 內置LNA，靈敏度更高
• EASY™，無需外部存儲器的高級AGPS技術
• AlwaysLocate™，週期模式的智能控制器
• GPS FLP模式，正常模式功耗約為50％
• GPS支持短路保護和天線檢測

LoRa規格

• 168 dB最大鍊接預算。
• +20 dBm – 100 mW恆定RF輸出vs.
• +14 dBm高效PA。
• 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。
• 優異的阻斷免疫力。
• 低的RX電流為10.3 mA，200 nA寄存器保持。
• 全集成合成器，分辨率為61 Hz。
• 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。
• 自動射頻感應和超快速AFC的CAD。
• 分組引擎最多256字節與CRC。

GPS規格

• 基於MT3339。
• 功率採集：25mA，功率跟踪：20mA。
• 符合GPS，SBAS。
• 可編程比特率高達300 kbps。
• 串行接口UART：可調4800〜115200 bps，默認值：9600bps。
• 更新率：1Hz（默認），最高10Hz。
• I / O電壓：2.7V〜2.9V。
• 協議：NMEA 0183，PMTK。
• 水平位置精度：自主<2.5米CEP。
• 使用EASY™的TTFF @ -130dBm：冷啟動<15s，熱啟動<5s，熱啟動<1s; TTFF@-130dBm。無EASY™：冷啟動<35s，熱啟動<30s，熱啟動<1s。
• 定時精度：1PPS輸出10ns，重新採集時間<1s。
• 速度精度無輔助<0.1m / s，加速精度無輔助0.1m /s²。
• 靈敏度採集-148dBm，跟踪-165dBm，重新採集-160dBm。
• 環境：工作溫度-40°C至85°C，存儲溫度-45°C至125°C。
• 動態性能高度Max.18000m，最大速度Max.515m / s，最大加速4G。
• L1波段接收器（1575.42MHz）通道22（跟踪）/ 66（採集）。

LoRa/GPS Shield For Arduino

The LoRa/GPS Shield is an expension board for LoRa™/GPS for using with the Arduino.This product is intended for those interested in developing LoRa™/GPS solutions.The LoRa/GPS Shield is composed of LoRa/GPS Shield mother board and LoRa BEE.

The LoRa/GPS Shield is an expension board for LoRa™/GPS for using with the Arduino.This product is intended for those interested in developing LoRa™/GPS solutions.The LoRa/GPS Shield is composed of LoRa/GPS Shield mother board and LoRa BEE.

In the LoRa part,the LoRa/GPS Shield is based on the SX1276/SX1278 transceiver.The transceivers of the LoRa/GPS Shield feature the LoRa™ long range modem that provides ultra-long range spread spectrum communication and high interference immunity whilst minimising current consumption. LoRa™ 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.

In th GPS part,the add on L80 GPS (base on MTK MT3339) is designed for applications that use a GPS connected via the serial ports to the arduino such as timing applications or general applications that require GPS information.This GPS module can calculate and predict orbits automatically using the ephemeris data (up to 3 days) stored in internal flash memory, so the shield can fix position quickly even at indoor signal levels with low power consumption.With AlwaysLocate™ technology, the LoRa/GPS Shield can adaptively adjust the on/off time to achieve balance between positioning accuracy and power consumption according to the environmental and motion conditions.The GPS also supports automatic antenna switching function. It can achieve the switching between internal patch antenna and external active antenna.Moreover, it keeps positioning during the switching process.

• Frequency Band: 868 MHZ
• Low power consumption
• Compatible with Raspberry Pi 2 Model B/Raspberry Pi 3.
• LoRa™ Modem
• FSK, GFSK, MSK, GMSK, LoRa™ and OOK modulation
• Preamble detection
• Baud rate configurable
• Built-in temperature sensor and low battery indicator
• Excellent blocking immunity
• Automatic RF Sense and CAD with ultra-fast AFC
• Support DGPS, SBAS(WAAS/EGNOS/MSAS/GAGAN)
• GPS automatic switching between internal patch antenna and external active antenna
• PPS VS. NMEA can be used in time service
• Support SDK command
• Built-in LNA for better sensitivity
• EASY™, advanced AGPS technology without external memory
• AlwaysLocate™, an intelligent controller of periodic mode
• GPS FLP mode, about 50% power consumption of normal mode
• GPS support short circuit protection and antenna detection

LoRa Spec

• 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.

GPS Spec

• Based on MT3339.
• Power Acquisition:25mA,Power Tracking:20mA.
• Compliant with GPS, SBAS.
• Programmable bit rate up to 300 kbps.
• Serial Interfaces UART: Adjustable 4800~115200 bps,Default: 9600bps.
• Update rate:1Hz (Default), up to10Hz.
• I/O Voltage:2.7V ~ 2.9V.
• Protocols:NMEA 0183,PMTK.
• Horizontal Position Accuracy:Autonomous <2.5 m CEP.
• TTFF@-130dBm with EASY™:Cold Start <15s,Warm Start <5s,Hot start <1s;TTFF@-130dBm.without EASY™:Cold Start <35s,Warm Start <30s,Hot Start <1s.
• Timing Accuracy:1PPS out 10ns，Reacquisition Time <1s.
• Velocity Accuracy Without aid <0.1m/s,Acceleration Accuracy Without aid 0.1m/s².
• Sensitivity Acquisition -148dBm，Tracking -165dBm，Reacquisition -160dBm.
• Environmental:Operating Temperature -40°C to 85°C,Storage Temperature -45°C to 125°C.
• Dynamic Performance Altitude Max.18000m，Maximum Velocity Max.515m/s，Maximum Acceleration 4G.
• L1 Band Receiver(1575.42MHz) Channel 22 (Tracking) /66 (Acquisition).

教學文件：https://wiki.dragino.com/index.php?title=Lora/GPS_Shield