LoRa helps you make your home more comfortable!

Latest update time：2016-07-08

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In recent years, the IoT market has been growing explosively at an alarming rate, and its applications are spread across various industries and fields. However, how to solve low-power ultra-long-distance IoT applications with the best cost-effectiveness has always been one of the major challenges faced by engineers: Mesh networks and GSM can solve long-distance networking needs, but they are respectively subject to high energy consumption and high costs.

In response to the above constraints, China Electric Port introduces you to an outstanding achievement in this field - LoRa (Long Range). LoRa is a technology dedicated to radio modulation and demodulation released by Semech. It competes with other modulation schemes such as FSK (Frequency Shift Keying), GMSK (Gaussian Minimum Shift Keying), BPSK (Binary Phase Shift Keying) and their derivatives. LoRa combines digital spread spectrum, digital signal processing and forward error correction coding technology, and has unprecedented performance. With the introduction of LoRa, the situation in the field of embedded wireless communications has changed completely.

Among them, Semtech SX1278 series transceivers Mainly use LoRaTM long-range modems for ultra-long-distance spread spectrum communications, with strong anti-interference and the ability to minimize current consumption. With the help of LoRaTM patented modulation technology, SX1278 can achieve high sensitivity of more than -148dBm using low-cost crystals and materials. In addition, the integration of high sensitivity and +20dBm power amplifiers enables the link budget of these devices to reach the industry-leading level, making them the best choice for long-distance transmission and applications with extremely high reliability requirements. Compared with traditional modulation technologies, LoRaTM modulation technology also has obvious advantages in anti-blocking and selectivity, solving the problem that traditional design solutions cannot take into account distance, anti-interference and power consumption at the same time.

Based on Semtech SX1278IMLTRT , China Electric Port recommends you a smart home temperature control system , which makes your home more comfortable with the superior performance of LoRa technology such as long distance and low power consumption!

An Introduction

This temperature control system is used in complex home environments, such as multi-story villas. By installing switch controllers in areas where people often move around, it controls the temperature, ventilation, curtains and other home appliances in multiple rooms. Because there are walls and homes blocking the communication link, the wireless chip is required to have good wall penetration capabilities. At the same time, due to the special use environment of smart homes, the temperature control system is required to be able to reliably connect anywhere within the installation range, and the power consumption must be low, so Semtech SX1278 has an advantage.

Main functions

1. Transmitting and receiving frequency 433MHz

2. Maximum 20dBm (about 100mW)

3. Sleep current 3.0uA

4. Emission current 110mA@100mW

5. Communication interface: UART serial port

6. Receiving sensitivity: -130dbm@0.3Kbps

Core advantages

1. Can meet the communication needs of any room in the three floors of the villa

2. Low power consumption, can use the leakage current of power lines for power supply

●Solution diagram

●Application Market