基于Semtech SX1276 LoRa and FSR 貨物數(shù)量(壓力)監(jiān)測方案

Semtech LoRa 長距離無線技術(shù)連接壓力傳感器（Force-Sensitive Resistor） Sensor溫度濕度傳感器，壓力傳感器（Force-Sensitive Resistor），顧名思義，加諸不同的力量（擠壓、重量），便會得到不同的電阻，進(jìn)而改變模擬輸入腳位所讀取到的電壓值,做為偵測信號.可用于販賣機(jī)飲料售出總數(shù)量監(jiān)測, 以及貨物總數(shù)量監(jiān)測. 如販賣機(jī)應(yīng)用可減少人力巡查補貨己及大數(shù)據(jù)的收集了解每個區(qū)域地方人們的消費喜好.

? 核心技術(shù)優(yōu)勢

使用 LoRa 長距離無線技術(shù)可長距離監(jiān)測商品銷售,以及長距離監(jiān)控貨物是否有減少及遺失.

? 方案規(guī)格

SX1276(Node)特點:

LoRaTM Modem

168 dB maximum link budget

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

+14 dBm high efficiency PA

Programmable bit rate up to 300 kbps

High sensitivity: down to -148 dBm

Bullet-proof front end: IIP3 = -11 dBm

Excellent blocking immunity

Low RX current of 9.9 mA, 200 nA register retention

Fully integrated synthesizer with a resolution of 61 Hz

FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulatio

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

方案來源于大大通。