#dotdot, the community internet

600天35次大版本迭代，蔚来 FOTA 背后的故事! 每次 FOTA升级平均涉及到了 20 个 ECU 的刷新。此外，单个 ECU 的刷新成功率达到了99.98%。

第三代哈弗H6：FOTA升级更智能! 其中，第三代哈弗H6作为家族爆款功不可没，其以领先技术的运用打造超越同级的优势，为体验赋能，得到消费者认可。如，整车FOTA升级便是其主要亮点之一。今天我们就重点讲一讲这门技术。

Le virus Mirai, qui a refait surface cette année en s'attaquant à des devices utilisés en entreprise, a mis en lumière la nécessité de mettre à jour les objets connectés. Plusieurs pistes sont à l'étude.

Addressing the need for streamlined power management solutions for energy harvesting hardware, e-peas has unveiled a new family of battery charger devices. While the company’s existing power management ICs (PMICs) offer direct power delivery to the application, as well as the charging of energy storage elements (such as Li-Ion batteries or super-capacitors), the AEM10900, AEM10300 and AEM30300 are fully dedicated to the charging function. This allows them to be employed in situations that need a simpler implementation, where there are space or cost constraints that need to be considered.

‘Matter’ is an industry-unifying standard, guided by the Connectivity Standards Alliance (formerly known as the Zigbee Alliance), for reliably, securely and seamlessly connected devices. Matter is meant to increase compatibility among smart-home products, with security as a fundamental design tenet. Espressif has been part of the Matter initiative since its early days. In a blogpost originally published by Espressif’s engineer Hrishikesh Dhayagude, readers can learn how they can easily build a Matter application on ESP32.

Oubliez tout ce que vous pensiez savoir sur le photovoltaïque. Heliatek, une start-up allemande révolutionne le secteur et l'ouvre à tous car ces panneaux photovoltaïques d'un nouveau genre peuvent se poser partout, plus exactement se coller sur toutes sortes de matériaux : métal, béton, membrane, verre, bitume et autres supports.

Central to any technological progress is the enrichment of human life. The internet and wireless connectivity have done that by allowing not only virtually anyone anywhere to connect real time, but by making possible connections between humans and a range of intelligent devices both indoors and outdoors, putting smart cities on the horizon.

Mobile Ad Hoc Network or MANET is a group of mobile devices, e.g., laptops, mobile phones, radios, or sensors that communicate with each other wirelessly — standard Wi-Fi, cellular, local RF network, etc.—and provides the needed network functionality without an existing fixed structure. They can change locations and reconfigure themselves while doing so. MANETs can be restricted to a local group of wireless devices or they can be connected to the Internet. A VANET (Vehicular Ad Hoc Network) is a MANET that lets vehicles communicate with roadside equipment. Even if the vehicles do not have an Internet connection, the wireless roadside equipment may be connected to the Internet, therefore allowing the vehicles' data to be conveyed over the Internet.

For our 4 top picks, we used a data-driven startup scouting approach to identify the most relevant solutions globally. The Global Startup Heat Map below highlights 4 interesting examples out of 402 relevant solutions. Depending on your specific needs, your top picks might look entirely different.

Internet of Things (IoT) has seen exponential growth over the past couple of years. A new study from International Data Corporation (IDC) estimates that there will be almost 42 billion connected devices within the year 2025, generating over 80 zettabytes (ZB) of data. As the number of IoT devices grows; the amount of data grows, along with that, grows the need for superior network instruments; which can support this load.

Thales has introduced the Javelin Combat Net Radio to its family of tactical communications products in response to evolving Warfighter needs. This new, rugged, single-channel, small form factor, Mobile Ad-Hoc Network (MANET) radio provides tactical command and control communications into the formations to further enable mission-essential capabilities at the tactical edge.

The military is one of the largest users of MANET. The military must perform a variety of missions, often in a hostile environment. The Army, Navy, Marines, Air Force, and Coast Guard require an information network between soldiers, vehicles, ships, planes, and headquarters—and this network must be safe from hacking, jamming, and targeting by adversaries. The need to transfer more and more information over greater distances with greater numbers of end points presents a challenging and complex mix of transceivers, amplifiers, and antenna equipment.

VANET have particular features like distributed processing, managing network, variable length of nodes, high node speed, but network topology is highly variable, and frequently partitioned network. In a research and industry communities, vehicular ad-hoc network have been recently attracting an increasing attention. VANET is a key topology for improving road safety and comfort through (ITS). A strong interaction is needed between the network protocol and vehicular mobility. Different routing scheme of VANET is given in this paper.

第三代哈弗H6 可整车FOTA升级! 当大众、丰田这样的“大集团”,开始深度参与电动化、智能化变革的时候,趋势走向已经越来越明朗了——智能化时代降临,“机械集合体”是基础,芯片、传感器、电子电器相关的零部件越来越多,汽车具备了“可升级”的能力。也就是说,汽车不再是“交付即终点”的产品,而变成了可迭代可进化的新智能终端。
对于品牌来说,需要差异化体验做品牌支撑。所以,当电动化层面的机械硬件逐渐趋同的时候,更需要在智能化领域建立新的技术壁垒,这就不得不说到FOTA。

FOTA, or firmware over-the-air, is a technology that enables firmware downloads and updates for specific electronic control units (ECUs) inside a car. As the number of ECUs in vehicles increases, the sharing of diagnostic and operational data from on-board systems and components reduces costs of recall car manufacturers, increases product quality and operational efficiency, as well as deliver post-sale vehicle performance and feature enhancements.

A FOTA update event refers to downloading a new firmware within the car ECU, sent from a firmware server located in cloud via a wireless channel such as WiFi/ BLE/GPRS. The FOTA upgrade could include replacing a specific firmware image within a ECU’s Flash memory or adding juts a patch to an already existing firmware image to effect the required changes in the or ECU’s FLASH.

An ad hoc network is a wireless mobile communication network composed of a group of mobile nodes with wireless transceivers. It does not rely on preset infrastructure and is established temporarily. The mobile nodes of the network use their own wireless transceivers to exchange information; when the information is not within the communication range, other intermediate nodes can be used to relay to achieve communication. They can be widely used in environments that cannot be supported by wired networks or which require communication temporarily, such as military applications, sensor networks, rescue and disaster relief, and emergency response.

Espressif Systems (Shanghai) Co., Ltd. (SSE: 688018.SH) is launching ESP32-WROOM-DA, which is a module that achieves high-quality, wireless connectivity across large areas, using two complementary PCB antennas in different directions. Also, based on its industry-leading technical specifications, the co-existence of Wi-Fi and Bluetooth (Classic & Low-Energy) connectivity, and its low-power consumption modes, the users of ESP32-WROOM-DA will be able to bring to life a wide range of complex IoT application scenarios.

Learn how to use ESP-MESH networking protocol to build a mesh network with the ESP32 and ESP8266 NodeMCU boards. ESP-MESH allows multiple devices (nodes) to communicate with each other under a single wireless local area network. It is supported on the ESP32 and ESP8266 boards. In this guide, we’ll show you how to get started with ESP-MESH using the Arduino core.

Companies like Wirepas are creating new ways for people to find practical applications for IoT technology. Gartner Research has projected that there will be 14.2 billion connected things by the end of this year. It expects that number to reach 25 billion by 2021. As more things are connected to IoT, the issue becomes how to use – and process – the data. Wirepas Mesh is already helping companies put IoT to practical use. Springwise has spotted other innovators delivering practical benefits for IoT, like startup Ripe.io's use of blockchain and IoT to improve food transparency.

Vehicular ad hoc networks (VANETs) have been quite a hot research area in the last few years. Due to their unique characteristics such as high dynamic topology and predictable mobility, VANETs attract so much attention to both academia and industry. In this survey paper, I provide an overview of the credential management of VANETs from my perspective. This paper starts with introducing what is VANET, its architecture, some of its features and uses. It also introduces the basics of security and access management in VANET. But mainly it focuses on the credential management for vehicular ad-hoc networks. The challenges and issues faced by it and lastly my thoughts on how it can be interpreted with respect to our course.

In this video, we are going to make a simple ESP Mesh network setup that consists of four ESP devices that will communicate with each other with the help of a Wi-Fi Mesh Network. And finally, we are going to connect a single esp to our laptop in order to get data from all the four sensors on the network. Note that we will be using both the ESP32 and ESP8266 boards in this tutorial so that you can create an ESP8266 Mesh network or ESP32 Mesh network using the same method.

During the event, Viasat showed its NetAgility Virtual and Mobile Software Defined Networking (SDN) bonding router delivering advanced multi-path networking transmission and management capabilities over a variety of tactical communication links in a number of U.S. Army Medical Command (MEDCOM) and Operational Virtual Health (OVH) situations. Tactical communication technologies leveraged included SATCOM, LTE and multiple Line of Sight tactical radios. Viasat’s technology supported Situational Awareness (SA) and Intelligence, Surveillance and Reconnaissance (ISR) applications with optimized network video capture to:

Connected Autonomous Vehicles (CAVs) share a high volume of data and specific information by accessing a digital infrastructure that includes public internet access. With different devices, vehicles can connect and share data from onboard sensors and road infrastructure. This sharing of data, inclusive of personal data, ends up making vehicles more vulnerable to cyber attacks.

Mobile Ad Hoc Network or MANET is a group of mobile devices, e.g., laptops, mobile phones, radios, or sensors that communicate with each other wirelessly — standard Wi-Fi, cellular, local RF network, etc.—and provides the needed network functionality without an existing fixed structure. They can change locations and reconfigure themselves while doing so. MANETs can be restricted to a local group of wireless devices or they can be connected to the Internet. A VANET (Vehicular Ad Hoc Network) is a MANET that lets vehicles communicate with roadside equipment. Even if the vehicles do not have an Internet connection, the wireless roadside equipment may be connected to the Internet, therefore allowing the vehicles' data to be conveyed over the Internet.