基于GPRS传输的车载酒精监测系统的设计

当今,因酒后驾车出现事故的人员伤亡数量越来越多,为了从根本上解决酒后驾丰的问题,本文设计了一种基于GPRS传翰的车羹酒精苴测系统。该系统以微处理器S3C2440A为核心,将酒精传感器,摄像头,GPRS无线网络模块,GPS定位系统和上位机信息处理模块有机的结合到一起。可实现对驾驶员的实时酒精浓度监测,当驾驶员酒后驾车时,系统会通过无线网络将车辆信息传递至交警监控中心,从而可以利用科技的手段解决酒后驾车的问题,为交警部门的工作也带来了便利。     

酒精浓度超标报警器设计与分析

酒精浓度超标报警器是交警判定驾驶员是否饮酒的重要设备。介绍了一种酒精浓度超标报警器的设计方法,利用MQ-3酒精传感器设计了一款安装在汽车驾驶室内的酒精浓度超标报警器,并对其结构特点、工作原理及其调试方法进行了详细的分析介绍。该系统利用LM393比较器和传感器对人体酒精浓度信号进行检测,判断司机是否酒后驾车,并使酒后驾车者不能启动汽车。因此相对其它类型酒精浓度检测装置具有更高的实用价值。     

基于物联网酒驾自动检测系统设计

针对目前因酒驾造成的交通事故频发问题,提出了一种基于物联网的车载酒驾自动检测系统。系统利用物联网技术,以STC12C5A16AD单片机为核心,通过使用MQ-3传感器来检测是否酒驾。当驾驶员进入驾驶位后,系统对驾驶员进行酒精检测。一但检测到酒驾,系统会禁止汽车改动,同时发现声光报警,然后能GPRS模块进行定位,最后将相关信息实时的发送给家人和当地交通部门。实验结果表明,系统能有效预防酒后驾车,具有很好的实用价值。     

酒后驾车监测追踪车载系统硬件设计

为了减少酒驾所造成的交通事故的发生,提出了一种基于GSM-GPS的酒后驾车监测追踪车载系统。设计实现了该系统主控模块、酒精浓度检测模块、GPS定位模块、GSM无线数据传输模块、报警显示模块的硬件部分。经过测试,各模块工作正常。该系统具有快速检测,准确定位,实时追踪等优点。     

基于贝叶斯数据融合的防酒后驾驶系统设计

为有效预防酒后驾驶,应用多个MQ-3酒精传感器和低功耗单片机,采用贝叶斯估计的数据融和方法设计出手持式防酒后驾驶系统。系统检测到驾驶员血液中酒精浓度超过20 mg/100 mL时,启动汽车闭锁控制使其无法启动,通过GPS模块定位汽车位置,使用GSM模块的短信功能将驾驶员的醉酒程度和汽车位置信息发送给系统预设联系人。该系统提高了检测结果的准确性和可靠性,功耗低,方便携带,对预防酒后驾车具有很好的效果。     

基于RFID技术的远程监控系统

文章针对远程监控方面的应用现状进行分析,提出了引入RFID技术组建远程监控系统的新方案。该方案采用RFID技术识别监控目标,利用ARM控制GPRS模块实现数据的远程传输,并详细说明了系统的功能实现和RFID技术的工作原理,构建了读取速度快、远距离识别、耐污损、更多资产管理信息的应用系统,实际应用表明该设计达到了期望的目标。     

基于Arduino的汽车酒精检测与事故报警系统

为防止驾驶员酒后驾驶,实现对事故车辆的定位、救援,设计了一种集酒精检测与汽车事故报警为一体的安全系统。检测系统以Arduino作为主控制器,将酒精传感器与语音模块相结合,当车内酒精浓度超标时,系统发出语音报警。报警系统通过GPS获取、处理车辆位置信息,使用户在手机及OneNET平台获取定位信息,实现对事故车辆的定位与救援。经试验检测结果表明,系统检测成功率达90%以上,系统可从方法上提高酒精检测和救援报警的成功率,具有可靠性高、安装简便的优点。     

基于51单片机的酒精浓度测试仪设计

针对驾驶员酒后驾车,量刑标准不明确的问题。本文利用MQ-3酒精浓度传感器能很好的解决该问题。MQ-3乙醇气体传感器以驾驶员呼出的气体为采集对象,输出随乙醇浓度变化的电压信号,该电压信号经ADC0832转换,送入STC89C52单片机系统,通过AT24C02与设定的醉酒阈值进行比较,并在LCD1602液晶上显示酒精浓度值,当酒精浓度超过设定值时,通过单片机驱动蜂鸣器进行报警。从而为交警检测驾驶员是否酒后驾车提供了可靠的依据。     

车载酒精探测控制仪设计

酒后驾车容易发生交通事故,为了减少或杜绝这种现象,通常是采用呼气酒精测试仪对驾驶人员进行现场检测,以确定驾驶人员是否饮酒.目前,市场上警用酒精测试仪种类繁多、功能强大,灵敏度高,但是由于它没有安装在汽车内部,只能由交警人员来实施,因此并不能从根本上杜绝酒后驾车,酒后驾车事件仍时有发生.     

基于GPRS数据传输智能终端的实现

介绍了利用单片机控制GPRS调制解调器模块实现GSM网络GPRS业务数据接入的智能终端系统,详细介绍了系统的硬件电路实现、单片机与GPRS模块的接口方式,以及嵌入式TCP/IP协议在本系统中的应用和实现。     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Teleportation of an arbitrary unknown N-qubit entangled state under the controlling of M controllers

A new quantum protocol to teleport an arbitrary unknown N-qubit entangled state from a sender to a fixed receiver under M controllers(M < N) is proposed. The quantum resources required are M non-maximally entangled Greenberger-Home-Zeilinger (GHZ) state and N-M non-maximally entangled Einstein-Podolsky-Rosen (EPR) pairs. The sender performs N generalized Bell-state measurements on the 2N particles. Controllers take M single-particle measurement along x-axis, and the receiver needs to introduce one auxiliary two-level particle to extract quantum information probabilistically with the fidelity unit if controllers cooperate with it.     

Diode-end-pumped Nd:YVO4/LBO lasers with 4.2W continuous-wave output at 457 nm

A continuous-wave (CW) 457 nm blue laser operating at the power of 4.2 W is demonstrated by using a fiber coupled laser diode module pumped Nd: YVO4 and using LBO as the intra-cavity SHG crystal With the optimization of laser cavity and crystal parameters, the laser operates at a very high efficiency. When the pumping power is about 31 W, the output at 457nm reaches 4.2 W, and the optical to optical conversion efficiency is about 13.5% accordingly. The stability of the out putpower is better than 1.2% for 8 h continuously working.     

Call for Papers

正Wireless Body-area Networks The last decade has witnessed the convergence of three giant worlds:electronics,computer science and telecommunications.The next decade should follow this convergence in most of our activities with the generalization of sensor networks.In particular with the progress in medicine,people live longer and the aging of population will push the development of wireless personal networks     

Call for Papers—Feature Topic,Vol.12,No.7,2015

正Information Centric Networking Information-Centric Networking(ICN) is an emerging direction in Future Internet architecture research,gaining significant tractions among academia and industry.Aiming to replace the conventional host-to-host communication model by a data-centric model,ICN treats data content as the first     

JOURNAL OF ELECTRONICS(CHINA)

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NEXT GENERATION WIRELESS NETWORKS–ESPECIALLY THE USE OF MILLI-MICROWAVE BANDS

The global bandwidth shortage of wireless communications has motivated the exploration of the naillimeter wave （ram-wave） frequency spectrum for the next generation wireless communications. Recent advances in RF CMOS technology and high speed baseband signal processing technologies have enabled tile extensive research and development of turn-wave wireless communications. The multi gigabit per second data rate of ram-wave system will lead to applications in many important scenarios, such as WPAN, WLAN,back-haul for cellular system. And the frequency bands include 28 GHz, 38 GHz, 45GHz, 60GHz, E-BAND and even beyond 100 GHz. The propagation and the imitation of the RF circuits design in these frequency bands make the directional antennas be inevitable for mm-wave communications.