描述
LoRa/GPS Shield For Arduino 無線射頻擴展板 LoRa Bee 含 GPS 衛星定位模組 RF LoRa 無線射頻擴展板
LoRa / GPS Shield是 LoRa™/ GPS 的擴展板,可以與Arduino一起使用。本產品專為有興趣開發LoRa™/ GPS解決方案的用戶而設計。LoRa / GPS Shield由LoRa / GPS Shield主板和LoRa BEE。在LoRa部分,LoRa / GPS Shield基於SX1276 / SX1278收發器.LoRa / GPS Shield的收發器採用LoRa™遠程調製解調器,可提供超長距離擴頻通信和高抗干擾性,同時最大限度地減小電流消費。與常規調製技術相比,LoRa™在阻斷和選擇性方面也提供了顯著的優勢,解決了傳統設計在範圍,抗干擾性和能耗之間的妥協。
在GPS部分,添加L80 GPS(基於MTK MT3339)專為使用通過串口連接到Arduino的應用程序(如定時應用程序或需要GPS信息的一般應用程序)而設計。此GPS模組可以計算並使用存儲在內部閃存中的星曆數據(最多3天)自動預測軌道,即使在低功耗的室內信號電平下,屏蔽也能快速固定位置。借助AlwaysLocate™技術,LoRa / GPS防護罩可自適應地調整開/關時間,以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和外部有源天線之間的切換。而且,
商品特色:
- 頻段:868兆赫
- 低功耗
- 兼容Raspberry Pi 2 Model B / Raspberry Pi 3。
- LoRa™調製解調器
- FSK,GFSK,MSK,GMSK,LoRa™和OOK調製
- 序言檢測
- 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RF感應和CAD超快速AFC
- 支持DGPS,SBAS(WAAS / EGNOS / MSAS / GAGAN)
- 內部貼片天線和外部有源天線之間的GPS自動切換
- PPS VS. NMEA可用於時間服務
- 支持SDK命令
- 內置LNA,提高靈敏度
- EASY™,先進的AGPS技術,無需外部存儲器
- AlwaysLocate™,一種週期模式的智能控制器
- GPS FLP模式下,正常模式功耗約為50%
- GPS支持短路保護和天線檢測
商品規格:
LoRa規格
- 最大鍊路預算168 dB。
- +20 dBm – 100 mW恆定RF輸出與
- +14 dBm高效率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
- 10.3 mA的低RX電流,200 nA寄存器保留。
- 完全集成的合成器,分辨率為61 Hz。
- FSK,GFSK,MSK,GMSK,LoRaTM和OOK調製。
- 內置的時鐘恢復比特同步器。
- 序言檢測。
- 127分貝動態範圍RSSI。
- 自動RF感應和CAD超快速AFC。
- 數據包引擎最高可達256個字節的CRC。
GPS Spec
- 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:可調節4800〜115200 bps,默認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 m CEP。
- TTFF @ -130dBm與EASY™:冷啟動<15s,熱啟動<5s,熱啟動<1s; TTFF@-130dBm.without EASY™:冷啟動<35s,熱啟動<30s,熱啟動<1s。
- 定時精度:1PPS輸出10ns,重捕時間<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,重採樣-160dBm。
- 環境:工作溫度-40°C至85°C,存儲溫度-45°C至125°C。
- 動態性能最高海拔18000米,最大速度最高515米/秒,最大加速度4G。
- L1頻段接收機(1575.42MHz)頻道22(跟踪)/ 66(採集)。
原廠技術文件與教學
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
Technical Details
Dimensions 109mm x 67mm x 34mm Weight G.W 57.5g Battery Exclude Part List
LoRa /GPS Shield mother board 1 LoRa BEE 1 Glue Stick Antenna(868 MHZ) 1