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相关概念视频

Design Example: Automobile Ignition System01:14

Design Example: Automobile Ignition System

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The automobile's ignition system plays a vital role by ensuring the timely ignition of the fuel-air mixture in each cylinder. This ignition is facilitated by a spark plug, which is composed of two electrodes separated by an air gap. A spark forms across this air gap when a substantial voltage is generated between the electrodes, leading to the ignition of the fuel.
One can generate a large voltage using a car battery of 12 volts with the help of inductors. Inductors are known for opposing...
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Bus Impedance Matrix01:24

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Calculating subtransient fault currents for three-phase faults in an N-bus power system involves using the positive-sequence network. When a three-phase short circuit occurs at a specific bus, the analysis uses the superposition method to evaluate two separate circuits.
In the first circuit, all machine voltage sources are short-circuited, leaving only the prefault voltage source at the fault location. The positive-sequence bus impedance matrix can be determined by solving the nodal equations,...
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PD Controller: Design01:26

PD Controller: Design

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In automotive engineering, car suspension systems often employ Proportional Derivative (PD) controllers to enhance performance. PD controllers are utilized to adjust the damping force in response to road conditions. A controller, acting as an amplifier with a constant gain, demonstrates proportional control, with output directly mirroring input.
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Design Example: Strain Gauge Bridge or Wheatstone Bridge01:15

Design Example: Strain Gauge Bridge or Wheatstone Bridge

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The utilization of strain gauges as transducers for converting mechanical strain into electrical signals is a common practice in various engineering applications. These strain gauges are frequently integrated into Wheatstone bridge circuits to accurately measure parameters such as force or pressure. Within this context, each element within the circuit exhibits a resistance that undergoes subtle variations when subjected to mechanical strain. The primary objective is to convert minuscule...
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A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
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Aluminum has become the material of choice for overhead transmission lines, surpassing copper due to its abundance and cost-effectiveness. The most prevalent type is the aluminum conductor, steel-reinforced (ACSR), which combines aluminum strands around a steel core. Other variants include all-aluminum conductors (AAC), all-aluminum alloy conductors (AAAC), aluminum conductor alloy-reinforced (ACAR), and aluminum-clad steel conductors. Advanced designs, such as aluminum conductors with steel...
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Automated Deployment of an Internet Protocol Telephony Service on Unmanned Aerial Vehicles Using Network Functions Virtualization
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为车辆通信设计新的BLE GAP角色.

Antonio Perez-Yuste1, Jordi Pitarch-Blasco1, Felix Alejandro Falcon-Darias1

  • 1ETSI Sistemas de Telecomunicación, Universidad Politécnica de Madrid, 28031 Madrid, Spain.

Sensors (Basel, Switzerland)
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PubMed
概括

新的蓝牙低能耗 (BLE) 角色,称为ITS-BLE,增强了合作智能运输系统 (C-ITS) 的车辆通信. 这种方法可以实现安全,低延迟的V2X应用程序,提高道路安全和效率.

关键词:
这就是BLE BLE BLE在C-ITS中,C-ITS可以使用C-ITS.差距农业规划中的角色在V2I中,V2I是V2I.在V2V中,V2V是V2V.在V2X中,V2X是V2X.车辆到所有东西.车辆到基础设施.车辆对车辆的交流.车辆网络的车辆网络.

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科学领域:

  • *无线通信协议的无线通信协议.
  • * 智能运输系统 * 智能运输系统
  • * 应用计算机科学

背景情况:

  • *蓝牙低能耗 (BLE) 是一个广泛采用的短程无线协议.
  • * 现有的BLE通用访问配置文件 (GAP) 角色没有针对车辆通信需求进行优化.
  • * 合作智能运输系统 (C-ITS) 需要低延迟,高密度和安全的通信.

研究的目的:

  • * 解决C-ITS环境中当前BLE GAP角色的局限性.
  • * 开发适合车辆通信的新 BLE GAP 角色.
  • *为车辆到一切 (V2X) 应用程序开发人员提供服务API.

主要方法:

  • * 开发两个新的应用层GAP角色用于车载通信 (ITS-BLE).
  • * 实现支持单向或双向通信的原型.
  • * 集成数据包加密和签名,以提高安全性和隐私.

主要成果:

  • * 证明了V2X BLE网络的可行性,使用半径高达200米的皮科细胞.
  • *新的GAP角色为道路场景提供基于BLE的解决方案,例如交通标志检测和收费站通信.
  • *安全措施确保V2X交换中的数据隐私和真实性.

结论:

  • * ITS-BLE有效地适应了BLE的C-ITS,满足了对低延迟和安全性的需求.
  • * 开发的解决方案支持实际的V2X应用程序,增强道路基础设施.
  • *新的GAP角色和API为智能运输中更广泛采用BLE铺平了道路.