2021 Annual Fire Technology Achievements – Smart Fire Early Warning System Based on NB-IoT

(1) Achievement Overview: The smart fire early warning system based on NB-IoT consists of perception layer devices, NB-IoT network, wireless connected fire warning monitoring platform, and terminal App. The perception layer devices include independent smoke fire detectors with wireless connectivity, independent temperature fire detectors, independent combustible gas detectors, and independent electrical fire monitoring detectors. This … Read more

NB-IoT Smart Water Meter: Innovations and Applications

In the spotlight, the grand event of the World Internet of Things Expo in September 2018 saw authoritative figures from over 30 countries and regions in industry, academia, finance, and government witness the release of new technologies, products, and applications. The expert review panel, composed of notable figures such as Academician Wu Hequan from the … Read more

Why Donghai Group Chooses Jidongyun’s NB-IoT Solution

A cartoon tells you: Besides WiFi and Bluetooth, what can the recently popular NB-IoT do? Let’s first vividly understand what NB-IoT is through a few images from iot101 cartoonist: (Copyright: iot101 cartoonist 🔗 A cartoon tells you: Besides WiFi and Bluetooth, what can the recently popular NB-IoT do?) The comparison of ZigBee, Wi-Fi, Bluetooth, and … Read more

5G NB-IoT System Integrated with High-Performance Fiber Sensor

1Introduction to the Results Real-time remote medical monitoring can address the shortage of public medical resources caused by an aging society. However, the strict requirements for high-performance sensors and long-distance signal transmission hinder the development of such comprehensive monitoring systems. This paper, published by Professor Yang Bin’s research team at Shanghai Jiao Tong University in … Read more

Research on IoT Security Protection Technology Based on NB-IoT

NB-IoT technology, with its advantages of full coverage, low power consumption, and low cost, overcomes the shortcomings of traditional IoT technologies, such as high power consumption, high costs, poor coverage, fragmentation, and difficulty in large-scale applications. It has been applied in various IoT application scenarios, including remote meter reading, asset tracking, smart healthcare, and smart … Read more

NB-IoT Physical Layer Random Access Analysis and Receiver Detection Algorithm

Abstract: NB-IoT is an emerging cellular technology that better supports applications requiring large connections, low power consumption, low throughput, low device costs, and high latency tolerance. Compared to LTE systems, the random access channel NPRACH in the NB-IoT system has been redesigned. A detailed analysis of the structural design of NPRACH in the NB-IoT system … Read more

NB-IoT Ultrasonic Remote Water Meter

NB-IoT Ultrasonic Remote Water Meter Research data indicates that among ordinary residential water usage, about 75% of the flow rates are between (300-1500) L/h, which can be accurately measured by existing water meters. However, approximately 14% of the flow rates are below (3-18) L/h, which is currently a major area of negative measurement error. The … Read more

Understanding the Five Types of IoT SIM Cards

The IoT SIM card is a mobile communication access service provided by the three major operators: China Mobile, China Unicom, and China Telecom, for IoT scenarios. It uses dedicated (11-digit or 13-digit) number segments to support basic communication services such as SMS, wireless data, and voice through specialized devices, providing communication link management and terminal … Read more