原标题：基于Semtech SX1276 LoRa井盖监控之积木式开发平台

       ACsip LoRa Smart Block 是长距离无线技术由S76S LoRa Board连接 温度,湿度, 3轴 共有3种传感器，设计用来监测人孔盖异常移动监控.由于电线,电缆地下化施工业者会私自人孔盖打开将电线电缆藏于下水道中造成线路紊乱,可经由ACsip LoRa Smart Block (温度,湿度, 3轴) 并告知监控单位人孔盖是否有异常移动,以及监测下水道中的温度,湿度可防止意外发生

　　【监控画面演示】

　　产品实体图

　　展示板照片

　　方案方块图

　　核心技术优势

　　1. ACsip LoRa Smart Block 长距离无线技术S76S LoRa Board

　　2. 连接 温度,湿度, 3轴 3种传感器

　　3. 设计用来监测人孔盖异常移动监控

　　方案规格

　　① Arduino开发平台,并内建MC3630三轴动作传感器及SHT30温湿度传感器

　　② LORAWAN架构

　　③ Wi-Fi Router

　　④ MQTT协定

      【Semtech SX1276】

　　137MHz to 1020MHz Long Range Low Power Transceiver

　　The SX1276/77/78/79 transceivers feature the LoRa® long range modem that provides ultra-long range spread spectrum communication and high interference immunity whilst minimising current consumption.

　　Using Semtech’s patented LoRa modulation technique SX1276/77/78/79 can achieve a sensitivity of over -148dBm using a low cost crystal and bill of materials. The high sensitivity combined with the integrated +20dBm power amplifier yields industry leading link budget making it optimal for any application requiring range or robustness. 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.

　　Features

　　LoRa Modem

　　168dB maximum link budget

　　+20dBm - 100 mW constant RF output vs. V supply

　　+14dBm high efficiency PA

　　Programmable bit rate up to 300kbps

　　High sensitivity: down to -148dBm

　　Bullet-proof front end: IIP3 = -11dBm

　　Excellent blocking immunity

　　Low RX current of 9.9mA, 200nA register retention

　　Fully integrated synthesizer with a resolution of 61Hz

　　FSK, GFSK, MSK, GMSK, LoRa and OOK modulation

　　Built-in bit synchronizer for clock recovery

　　Preamble detection

　　127dB 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

　　Applications

　　Automated Meter Reading

　　Home and Building Automation

　　Wireless Alarm and Security Systems

　　Industrial Monitoring and Control

　　Long range Irrigation Systems

　　Packaging

　　QFN 28

　　Order Codes

　　SX1276IMLTRT - Pb-free, Halogen free, RoHS/WEEE compliant product