The Wi-Fi, NB, and 4G smoke detectors differ mainly in network technology, applicable scenarios, power consumption, and cost. Below is a comparative analysis based on core dimensions: 1. Network Technology and Coverage Wi-Fi Model Technical Principle: Relies on local Wi-Fi networks for data transmission and requires a router. Coverage Area: Limited to the Wi-Fi signal … Read more
On January 21, Qualcomm launched three new 4G SoCs in New Delhi, India: Snapdragon 720G, Snapdragon 662, and Snapdragon 460. Among them, the Snapdragon 720, as a member of the Snapdragon 7 series, is worth paying attention to in terms of performance. In terms of specifications, the Qualcomm Snapdragon 720 (internal code SM7125) is built … Read more
This Issue Hot Topics The development of cellular IoT is actually influenced by the evolution of mobile communication networks. In the coming years, cellular IoT will transition from primarily 2G connections to NB-IoT and 4G connections. However, this transition will not happen overnight; it requires a smooth migration through product iterations that complement NB-IoT and … Read more
1. Product Overview The QT290G is an indoor gateway that adheres to the standard LoRaWAN™ protocol. It can connect to standard LoRaWAN terminals and facilitate bidirectional communication. The gateway connects to the company’s NS (Network Server) via a standard Ethernet interface and can be expanded to support 4G/LTE for data upload. It also supports local … Read more
On February 22, ofo signed a cooperation agreement with China Telecom and Huawei for the application of NB-IoT in shared bicycles, providing wireless network solutions including NB-IoT chips. The three parties stated that in the near future, “little yellow bikes” will be able to connect to China Telecom’s wireless network using the latest NB-IoT technology, … Read more
Click the title below “Chinese Journal of Electrical Engineering” to follow our WeChat account The first impact factor of CSEE JPES is published! Click to view details. New Feature: Click the bottom left corner of the text “Read the Original Text” to jump to IEEE Xplore to view the full text of the paper on … Read more
Click above to follow Computer Enthusiasts Many friends purchasing wireless keyboards and mice are targeting wireless products for their convenience and freedom of use. However, when choosing, many are confused about the differences between 2.4G, Bluetooth, and Bluetooth + 2.4G. What are they, and which should I choose? Today, I will explain this, hoping to … Read more
He Qin, Xie Yinggang, Zhao Minglang (Beijing Information Science and Technology University, School of Information and Communication Engineering, Beijing 100101) Abstract: In response to vehicle pollution emissions and real-time vehicle monitoring issues, a vehicle information self-inspection monitoring system based on Internet of Things (IoT) technology is designed. The system uses an OBD simulator to replace … Read more
Star Box Smart Gateway Function/Application Scenario Analysis In the era of the Internet of Things (IoT), IoT gateways play a crucial role by successfully connecting the perception network with traditional communication networks, enabling wide-area and local interconnections. With an IoT gateway, it is possible to manage various perception nodes at the bottom layer, capture information, … Read more
It seems that everyone is curious about the world of humanoid robots! Imagine having a robotic butler at home in the future, helping you with cleaning, cooking, and even chatting with you. Doesn’t it sound like life would become more interesting and easier? Here are the points you need to know about humanoid robots: 1. … Read more