Wireless Communication

LoRa-Based Termite Online Monitoring System

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LoRa-Based Termite Online Monitoring System

LoRa-Based Termite Online Monitoring System School: Qingdao Innovation School, Shandong Province Author: Sun Binhang Termites are highly destructive social insects that primarily feed on wood fibers, damaging buildings, destroying reservoir embankments, and eroding forest resources. Traditional termite control methods involve burying bait wood in suspected areas and manually excavating for inspection at scheduled intervals. When … Read more

Smart Cities and IoT – Wireless Transmission Technologies

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Smart Cities and IoT – Wireless Transmission Technologies

With the rapid development of domestic wireless communication and IoT sensing technologies, a large number of housing, hotels, commercial buildings, and office buildings have begun their intelligent upgrades, and people are slowly adapting to a more intelligent daily work and life. Not only in civilian applications, IoT technology is also gradually integrating into the industrial … Read more

Practical Application Designs for LoRa and NB-IoT

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Practical Application Designs for LoRa and NB-IoT

—— [Introduction] —— This article discusses the application and design ideas of low-power wide-area IoT technology in different scenarios, aiming to provide a practical judgment on the maturity of low-power wide-area IoT technology, the selection of application scenarios, and its importance in the field of IoT technology. 1. Background This article discusses the application and … Read more

How LoRa Signals Are Generated

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How LoRa Signals Are Generated

LoRa is a wireless network standard based on linear modulation. Linear Modulation: Linear modulation represents “compressed high-intensity radar pulses,” which is a signal whose frequency increases or decreases over time. It is commonly used in sonar and radar, and is also prevalent in spread spectrum technology. Linear Frequency Modulation Spread Spectrum: Linear frequency modulation spread … Read more

Bluetooth Security Analysis in IoT Scenarios

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Bluetooth Security Analysis in IoT Scenarios

1 Introduction Bluetooth technology has been widely applied in various scenarios such as personal electronics, automotive electronics, smart homes, smart cities, and industrial IoT, gaining support from over 30,000 manufacturers. The number of Bluetooth-enabled devices has reached 3.6 billion, and it is expected to rise to 5.2 billion by 2020. Bluetooth is currently one of … Read more

Why Is Bluetooth Called Bluetooth?

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Why Is Bluetooth Called Bluetooth?

I have a habit of wearing headphones in the office, sometimes listening to instrumental background music to fend off surrounding noise, and other times just to enjoy a moment of electronic silence with my AirPods’ noise cancellation. Many headphones connect via Bluetooth, and I often wonder why this technology is called Bluetooth instead of Blueear, … Read more

Introduction to Auracast™ Bluetooth Audio Feature

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Introduction to Auracast™ Bluetooth Audio Feature

The Bluetooth Special Interest Group (Bluetooth SIG) launched a new trademark, Auracast™, in 2022. This is a brand new Bluetooth broadcast audio feature that allows audio transmitters to broadcast to an unlimited number of nearby Bluetooth audio receivers, enabling high-quality stereo audio playback directly to visitors using hearing devices in public places. This new technology … Read more

Differences Between Classic Bluetooth, Bluetooth Low Energy, and Dual-Mode Bluetooth

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Differences Between Classic Bluetooth, Bluetooth Low Energy, and Dual-Mode Bluetooth

Traditional/Classic Bluetooth Module (Classic Bluetooth, abbreviated as BT) Bluetooth Low Energy (BLE) Classic Bluetooth has developed and improved based on earlier versions like Bluetooth 1.0, 1.2, 2.0+EDR, 2.1+EDR, and 3.0+EDR, while Bluetooth Low Energy was developed from Nokia’s Wibree standard, representing two completely different standards. Classic Bluetooth modules can be further divided into traditional Bluetooth … Read more

Understanding Wi-Fi, Bluetooth, and NFC Technologies

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Understanding Wi-Fi, Bluetooth, and NFC Technologies

Wi-Fi, Bluetooth, and NFC are terms that most people are familiar with. We use Wi-Fi to access the internet, listen to music with Bluetooth headphones, and make payments using NFC… People often ask what the differences are between these three technologies. Which one is the best? Or is it a three-way split? After all, over … Read more

Bluetooth BLE Protocol Study: Introduction to Concepts

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Bluetooth BLE Protocol Study: Introduction to Concepts

Background In school, I used Bluetooth technology to participate in competitions (and won awards); as Bluetooth is a common protocol in the Internet of Things, it is necessary to study it in depth. The subsequent articles will focus on BLE (v4.0). Introduction Bluetooth technology was originally created by the telecommunications giant Ericsson in 1994 as … Read more