共查询到20条相似文献,搜索用时 203 毫秒
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为实现中国内河新能源船舶统一监管、远程运维,文中分析了现有船舶、车辆远程监管平台关键技术和内河新能源船舶监管要素及管理需求后,提出并搭建了内河船舶新能源系统监管平台.该平台采用自定义通信协议满足监管对象、数据项扩展需求;采用船载端与岸端信息数据加密方法保障信息安全;采用多种数据存储单元结合的混合分布式存储架构满足船舶新能源系统数据存储需求;提出布谷鸟搜索-概率神经网络算法,为开展新能源系统故障诊断研究提供技术支持.平台能够实时监管并记录船舶新能源系统运行状态,实现长江水域新能源船舶信息化管理,开创内河新能源船舶信息服务新模式,推进绿色长江建设. 相似文献
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为满足FSEC(Formula Student Electric China,中国大学生电动方程式汽车大赛)中电动方程式赛车的数据存储、故障检测和车辆调试等方面需求,提出一种“车载数据终端+数据监测平台”架构模式的远程监控系统。该系统包括数据采集层、网络层和应用层多层架构,采用模块化的方式进行功能实现,解决赛车在调试和运行过程中数据采集、存储、传输、显示等问题,提高了整车控制策略优化速度以及故障诊断效率。该系统已应用在2021年新赛车上,其使用效果验证了设计方案的有效性和可行性。 相似文献
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由于养护数据在位置,时间和类型上的复杂性,从而决定了关系型的二维表格并不是道路养护相关数据的最佳存储方式,且直接应用关系数据库作为数据平台将不利于形成良好的系统结构.文章给出的是一种基于XML的养护信息数据平台,该平台作为数据容器可以对养护相关的大量不确定关系数据进行有效的存储,并提供安全、便捷、高效的访问手段和二次开发接口;作为信息系统的软件总线,平台提供了基础的数据服务和事务服务,在简化系统结构的同时,提高了系统的开发效率. 相似文献
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崔艳升 《内蒙古公路与运输》2019,(2)
高速公路收费站日常营运数据的编辑、存储、查阅、管理、通报乃至业绩分析处理等业务,存在实时性弱、便捷性差和用户体验不良等问题,文章基于小程序设计实现了高速公路收费站数据维护管理平台。分析了系统需求,设计了系统的功能框架和业务流程,描述了系统架构及开发模式。该系统以蒲掌收费站为试点,依托微信平台,实现了站内日常业务数据的分布式管理、查看和发布功能,且界面友好、性能稳定、方便快捷。 相似文献
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基于Unix平台的视频监控存储与管理系统的研究与开发 总被引:2,自引:0,他引:2
道路交通视频监控是ITS的重要子系统之一。在Windows平台上开发的系统在稳定性、安全性、海量视频数据的处理能力等方面不尽人意。基于Unix平台集群环境下的视频监控存储与管理系统有效地解决了这些问题。通过视频数据的并行实时存储子系统、基于B/S的视频数据管理子系统和视频数据的回放3个子系统的独立和协同作用,实现对多路交通监控视频数据的实时存储及管理。实践证明,运行于Unix平台的视频监控存储与管理系统。数据吞吐率高,能对海量视频数据同时进行存储和管理。且安全可靠。 相似文献
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基于CRIO的汽车发动机实时测试系统设计 总被引:1,自引:0,他引:1
本文以赛欧发动机为研究对象,提出了一种基于CompactRIO平台的发动机测试系统,系统可以耐受高温振动等不良工况,直流供电便于在汽车上使用,系统将发动机电控系统各传感器和执行器信号进行调理后采集到实时采集器中,并能够进行相应的处理、计算和存储,处理功能可以实现信号的数字滤波;计算功能可以实现信号有效参数的提取;存储功能能实现对数据的长久保存和回放。 相似文献
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采用计算机对汽车的制动性能,车速,前轮侧滑三种性能指标进行了综合地检测。着重介绍了在制动性能检测中采用的差速辊的功能和优点,分析了汽车的各种动作及其相互关系并编制了控制程序。进行了软硬件联调和分析研究。 相似文献
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David H. Weir 《国际交通安全学会研究报告》2010,34(1):16-21
The use of a driving simulator in the development of human-machine-interfaces (HMI) such as a navigation, information or entertainment system is discussed. Such use addresses the need to study and evaluate the characteristics of a candidate HMI early in the R&D and design stage to ensure that it is likely to meet various objectives and requirements, and to revise the HMI as may be necessary. Those HMI requirements include such things as usability, driver comfort, and an acceptable level of attentional demand in dual task conditions (driving while using an HMI). Typically, such an HMI involves an information display to the driver, and a means for driver input to the HMI. Corresponding simulator requirements are discussed, along with typical simulator features and components. The latter include a cab, control feel systems, visual image generator, real time scenario control (task definitions), a motion system (if provided), and data acquisition. Both fixed and moving base systems are described, together with associated benefits and tradeoffs. Considerations in the design of the evaluation experiment are discussed, including definition of primary and secondary tasks, and number of driver subjects (experimental participants). Possible response and performance measures for the primary and secondary tasks are noted, together with subjective measures such as task difficulty and ease of using the HMI. The advantages of using a driving simulator to support R&D are summarized. Some typical and example simulator uses are noted. 相似文献
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发动机电子控制半实物仿真试验平台的开发 总被引:1,自引:0,他引:1
以Jetta AT1.6轿车为对象。在分析其发动机电子控制系统主要传感器工作原理的基础上。设计了基于ARM微处理器芯片LPC2119的发动机传感器信号采集和信号模拟电路.利用Matlab/Simulink建立了发动机的半实物仿真模型.开发了汽车发动机电控半实物仿真试验平台。在所开发的试验平台上对Jetta AT1.6轿车的发动机ECU进行了性能测试,获得了基本map图和一些修正曲线。为ECU控制算法设计提供了有效的参考。同时,实车的测试结果与半实物仿真模型的计算结果基本一致,从而验证了所建发动机模型的正确性。试验结果表明,所设计的半实物仿真试验平台获得了满意的效果,不仅可以用于教学,而且可用来开发、调试及检测汽车的发动机电子控制系统。 相似文献
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基于GPRS的重型汽车道路试验系统研究 总被引:1,自引:1,他引:0
为了满足重型车辆道路试验远程数据传输的要求,本文基于GPRS通讯网络技术开发了重型汽车道路远程试验监控系统。文中阐明了系统的基本要求,设计出了GPRS道路实时监测系统网络系统架构,给出了车载数据采集单元的功能原理图,可通过GPRS模块将汽车行驶中性能参数发送到终端监控软件。最后,通过一个应用实例验证了该系统的可靠性和实用性。 相似文献
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OSEK OS (Offene Systeme und deren Schnittstellen für die Elektronik in Kraftfahrzeugen Operating System) is an open, real-time
operating system standard for ECU software in vehicles. Because it was originally designed to be used in an extremely resource-constrained
environment, an OSEK-compliant operating system must incur low processing overhead and memory usage. Unfortunately, as OSEK
OS has evolved over time, it now specifies nontrivial kernel features along with multiple conformance classes and application
modes. This may lead to unwanted dynamic resource usage in a system using OSEK OS unless the standard is carefully interpreted
and designed into an OSEK OS implementation. In this paper, we analyzed the various kernel features of OSEK OS and their interactions
to identify areas in the standard that warrant further resource usage optimization. In particular, we attempted to reduce
the run-time memory footprint. Based on our analyses, we present two kernel mechanisms: (1) stack sharing among tasks and
(2) light-weight ready queue handling specialized for OSEK OS conformance classes. We also offer implementation methods for
the proposed mechanisms by extending OIL and associated tools. Finally, we show the effectiveness of the proposed mechanisms
via extensive experiments. Our mechanisms allow OSEK-based systems to use only 36% of the memory requirements of conventional
OSEK-based systems on average. 相似文献
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Jiawang Yong Feng Gao Nenggen Ding Yuping He 《International Journal of Automotive Technology》2017,18(4):603-612
This paper presents a novel electric booster (E-booster) that exibits superior performance advantages over traditional vacuum boosters. The proposed E-booster, consisting of an electric motor and a ball screw assembly, is designed for electro-hydraulic brake (EHB) systems to meet relevant requirements for electric vehicles and active safety technologies. A mathematical model for an EHB system is generated to determine the desired values of the parameters for the E-booster prototype using numerical simulation in MATLAB. Simulation results of the EHB system with the virtual E-booster demonstrate the feasibility and effectiveness of the innovative technique. Built upon the results derived from the numerical simualtions, an integrated algorithm based on the Kalman filter and a sliding mode control technique is designed to control the E-booster motor and to implement the brake booster function. A hardware-in-the-loop (HIL) real-time simulation system equipped with the E-booster prototype is developed. HIL real-time simulations are conducted to evaluate the proposed algorithm. The HIL real-time simulation results demonstrate that the proposed algorithm generates booster brake forces fast, and forces the ball nut to track the push rod well to ensure comfortable brake pedal feel. 相似文献