Sensors are points ofcontact betweenthe material world ofatoms, mass, andenergy and the seemingly immaterial world of information, computation, and cognition. Linking these two domains more tightly yields all sorts of practical benefits, such as improvedinputdevicesforcomputers,moreeffectivemedicaldevices(implantedor worn), more precise agricultural operations, better monitored buildings or bridges, more secure payment systems, and more reliable sensor–actuator control systems. There are many settings in which tighter coupling between digital and physical planes can enhance safety, security, performance, and reliability.
标签: Computational RFID
上传时间: 2020-06-08
上传用户:shancjb
The present era of research and development is all about interdisciplinary studies attempting to better comprehend and model our understanding of this vast universe. The fields of biology and computer science are no exception. This book discusses some of the innumerable ways in which computational methods can be used to facilitate research in biology and medicine—from storing enormous amounts of biological data to solving complex biological problems and enhancing the treatment of various diseases.
上传时间: 2020-06-10
上传用户:shancjb
安全仪表系统、SIS系统技术方案,方案设计。
标签: SIS
上传时间: 2021-10-15
上传用户:
UL Standard for Safety for Automatic Electrical Controls for Household and Similar Use, Part 1: GeneralRequirements, UL 60730-1Fourth Edition, Dated October 19, 2009Summary of TopicsThis new edition of UL 60730–1 is being issued to:1) Adopt IEC’s Amendments No. 1 and No. 2 of IEC 60730-1.2) Adopt UL’s proposed changes to the national differences.
标签: ul60730
上传时间: 2021-10-21
上传用户:ttalli
目前电动汽车主要以锂电池作为动力来源,为了提高锂电池的使用时间和安全性,为锂电池提供安全良好的运行环境,电池管理系统应运而生。BMS主控单元基于S32K144汽车级单片机,通过主从式网络控制结构能够对锂电池的各个参数进行采集与分析。采用扩展卡尔曼滤波对电池的荷电状态(SOC)进行估算,克服普通估算方法无法避免电池内阻误差的缺点,通过Matlab/Simulink软件仿真验证可使估算误差达到2%以内。At present,electric vehicles mainly use lithium batteries as the power source.In order to improve the running time and safety of lithium batteries,a safe and good operating environment for power batteries is provided,and a battery management system(BMS) has emerged.The BMS main control unit is based on the S32K144 automotive-grade control chip.Through the master-slave network control structure,it can collect and analyze the various parameters of the lithium battery.The Extended Kalman Filter(EKF) is used to estimate the state of charge(SOC) of the battery,which overcomes the shortcomings of the internal estimation method that cannot overcome the internal resistance error of the battery.It can be verified by Matlab/Simulink software simulation.The estimation error is within 2%.
上传时间: 2022-03-26
上传用户:XuVshu
锂电池BMS管理技术是移动机器人的关键技术,本文设计了基于bq76PL455、STM32F103的锂电池管理系统,实现了电池组电压、电流、过压、过流等状态监测;系统配置均衡电路,电池充电过程中若出现电池单体电压不平衡现象,会触发均衡电路,进而提高电池的安全性,延长使用寿命。Lithium battery BMS management technology is the key technology of mobile robot.The lithium battery management system based on bq76PL455 and STM32F103 is proposed to realize the monitoring of battery pack voltage,current,overvoltage and overcurrent.The system is equipped with equalization circuit.When the battery cell voltage imbalance occurs,the equalization circuit is triggered to improve the safety and service life of the battery.
上传时间: 2022-04-02
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在全球气候变暖和石油资源短缺的形势下,推动新能源汽车的发展将成为汽车行业一种新的发展方向。在大力发展新能源电动汽车行业的同时还应兼顾电动汽车充电设施的发展,因此对电动汽车充电桩的设计与研究显得十分必要。对电动汽车直流充电桩的硬件系统进行设计,主要的硬件电路包括安全监测电路、总压采集电路、温湿度检测电路、语音电路。软件包括主要流程图和温湿度检测流程图。Under the situation of global warming and shortage of petroleum resources,promoting the development of new energy vehicles will become a new development direction for the automotive industry.While vigorously developing the new energy electric vehicle industry,we should also take into account the development of electric vehicle charging facilities.Therefore,the design and research of electric vehicle charging piles is very necessary.The hardware system of the electric vehicle DC charging pile is designed.The main hardware circuits include safety monitoring circuit,total voltage collecting circuit,temperature and humidity detecting circuit,voice circuit and CAN communication.The software includes a main flow chart and a temperature and humidity detection flow chart.
标签: 电动汽车
上传时间: 2022-04-03
上传用户:jason_vip1
ISO 26262《道路车辆功能安全》国际标准是针对总重不超过3.5吨八座乘用车,以安全相关电子电气系统的特点所制定的功能安全标准,基于IEC 61508《安全相关电气/电子/可编程电子系统功能安全》制定,在2011年11月15日正式发布。ISO 26262是史上第一个适用于大批量量产产品的功能安全(Functional Safety)标准。特别需要注意的是,ISO 26262仅针对安全相关电子电气系统,包含电机、电子与软件零件,不应用于非电子电气系统(如机械、液压等)。功能安全之设计议题在汽车领域已被重视,因其关系人员安全与公司商誉等问题,透过危害分析与风险评估(Hazard Analysis & Risk Assessment,HARA)及V模型设计架构,使功能安全需求等级得到一致性的分析结果,以利汽车电子系统之生命周期考虑到所需失效防止技术与管理要求,并借由设计开发、查证(Verification)及确认(Validation)等能力成熟度模型集成(CMMI-DEV)流程加以实现,使得产品之功能安全符合所需汽车安全完整性等级(ASIL)。
上传时间: 2022-05-30
上传用户:
ISO 26262《道路车辆功能安全》国际标准是针对总重不超过3.5吨八座乘用车,以安全相关电子电气系统的特点所制定的功能安全标准,基于IEC 61508《安全相关电气/电子/可编程电子系统功能安全》制定,在2011年11月15日正式发布。ISO 26262是史上第一个适用于大批量量产产品的功能安全(Functional Safety)标准。特别需要注意的是,ISO 26262仅针对安全相关电子电气系统,包含电机、电子与软件零件,不应用于非电子电气系统(如机械、液压等)。功能安全之设计议题在汽车领域已被重视,因其关系人员安全与公司商誉等问题,透过危害分析与风险评估(Hazard Analysis & Risk Assessment,HARA)及V模型设计架构,使功能安全需求等级得到一致性的分析结果,以利汽车电子系统之生命周期考虑到所需失效防止技术与管理要求,并借由设计开发、查证(Verification)及确认(Validation)等能力成熟度模型集成(CMMI-DEV)流程加以实现,使得产品之功能安全符合所需汽车安全完整性等级(ASIL)。
上传时间: 2022-05-30
上传用户:
ISO 26262《道路车辆功能安全》国际标准是针对总重不超过3.5吨八座乘用车,以安全相关电子电气系统的特点所制定的功能安全标准,基于IEC 61508《安全相关电气/电子/可编程电子系统功能安全》制定,在2011年11月15日正式发布。ISO 26262是史上第一个适用于大批量量产产品的功能安全(Functional Safety)标准。特别需要注意的是,ISO 26262仅针对安全相关电子电气系统,包含电机、电子与软件零件,不应用于非电子电气系统(如机械、液压等)。功能安全之设计议题在汽车领域已被重视,因其关系人员安全与公司商誉等问题,透过危害分析与风险评估(Hazard Analysis & Risk Assessment,HARA)及V模型设计架构,使功能安全需求等级得到一致性的分析结果,以利汽车电子系统之生命周期考虑到所需失效防止技术与管理要求,并借由设计开发、查证(Verification)及确认(Validation)等能力成熟度模型集成(CMMI-DEV)流程加以实现,使得产品之功能安全符合所需汽车安全完整性等级(ASIL)。
上传时间: 2022-05-30
上传用户:得之我幸78