Interface design considerations for an in-vehicle eco-driving assistance system

This high-fidelity driving simulator study used a paired comparison design to investigate the effectiveness of 12 potential eco-driving interfaces. Previous work has demonstrated fuel economy improvements through the provision of in-vehicle eco-driving guidance using a visual or haptic interface. This study uses an eco-driving assistance system that advises the driver of the most fuel efficient accelerator pedal angle, in real time. Assistance was provided to drivers through a visual dashboard display, a multimodal visual dashboard and auditory tone combination, or a haptic accelerator pedal. The style of advice delivery was varied within each modality. The effectiveness of the eco-driving guidance was assessed via subjective feedback, and objectively through the pedal angle error between system-requested and participant-selected accelerator pedal angle. Comparisons amongst the six haptic systems suggest that drivers are guided best by a force feedback system, where a driver experiences a step change in force applied against their foot when they accelerate inefficiently. Subjective impressions also identified this system as more effective than a stiffness feedback system involving a more gradual change in pedal feedback. For interfaces with a visual component, drivers produced smaller pedal errors with an in-vehicle visual display containing second order information on the required rate of change of pedal angle, in addition to current fuel economy information. This was supported by subjective feedback. The presence of complementary audio alerts improved eco-driving performance and reduced visual distraction from the roadway. The results of this study can inform the further development of an in-vehicle assistance system that supports ‘green’ driving.     

某船轮机长报警系统的优化设计

轮机长报警系统是机舱监测报警系统的一个分系统,随着船舶机舱自动化的不断发展,船东对轮机长报警系统使用便捷化、人性化方面的要求日趋提高,传统的轮机长报警系统迫切需要优化和改进,文中以某船的轮机长报警系统为例,分析总结了该船轮机长报警系统优化设计的功能特点,为今后同类轮机长报警系统设计提供借鉴。     

结构过渡接头在舰船结构上应用的若干问题

提要根据结构过渡接头（structural transition joint,简称STJ）的特点,就设计和施工必须满足的技术要求,阐述了与质量和安全密切相关的若干问题,并给出了设计和施工中一些节点实例.     

上海徐汇滨江老码头结构修复、加固设计

以上海徐汇滨江工程东段老码头改造为例,系统阐述老码头改造中的常规问题,以及利用新技术、新工艺解决老码头修复、加固问题的措施.     

利用单片机实现的红外通信接口

介绍了一种利用单片机实现红外通信接口的方法,只需在外部搭少量电路,就可实现单片机系统的红外通信。     

船舶电站及其监控系统仿真设计

船舶电站仿真系统可以有效地提高船舶电站监控系统的开发效率和操作员技能培训的质量，然而，由于开发难度大等因素导致目前市场上成熟且可应用的产品较少，针对这一问题，综合应用MATLAB软件和VC软件编程工具，开发了船舶电站仿真系统。经实际调试，该系统可实现电站及其基本监控功能的仿真运行。     

船舱进水监控系统生态界面设计研究

现代舰船监控系统的高度复杂化和自动化将决策的任务主要交给人来完成,这就大大增加了操作员的心理负担。为了给操作员正确决策提供支持,减轻其心理负担,本文首次将国外最新的生态界面设计理论引入到船舱进水监控系统的界面设计中,将监控系统界面信息划分为彼此形成目的——方法关系的五大抽象级别,按照界面信息尽量激发人的较低级别的认知控制行为(SBB和RBB)同时为操作员现场新问题求解行为(KBB)提供有力支持这一生态界面设计原则,结合进水监控系统自身特点给出了实例设计解决方案。     

Coupled renewal model of ocean viscous sublayer, thermal skin effect and interfacial gas transfer velocity

A previously developed renewal model included parameterizations for the thermal skin effect and interfacial gas transfer velocity. The more readily available cool skin data were used for an adjustment of the gas transfer parameterization. In this work, the renewal concept is extended to include the velocity difference across the viscous sublayer and to account for the stage of surface wave development. As a result, the empirical coefficients that enter the renewal model have been specified more accurately using laboratory data on the surface wind drift current. In addition, the coefficient linking the cool skin and gas transfer parameterization formulas has been determined from the probability distribution function for renewal events. A comparison of the upgraded renewal model with the thermal skin data collected during the COARE and more recent field programs and with gas transfer data collected during GasEx-01 experiment suggests that the renewal model can be a useful tool for producing a physically based parameterization for the interfacial CO₂ transfer velocity. Model uncertainties associated with the effect of surface films are discussed.     

BVAC.N99型真空断路器替代TDZ1型空气断路器电气接口改进方案

针对现有电力机车TDZ1型空气断路器升级换代为BVAC.N99型真空断路器项目中电气接口不兼容的问题,分析其形成的原因,并提出了解决措施。     

RS485总线在主机安全报警系统的应用

本文介绍了RS485总线在船舶主机安全报警系统的应用，以及RS485接口电路的设计和通信协议的定义。