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《河南职业技术师范学院学报(职业教育版)》2016,(2)
基于STC89C52单片机设计了一种智能循迹避障小车,由手机通过蓝牙发送指令实现小车的自动循迹或避障.整体设计以STC89C52作为主控制器,同时车载H C-06蓝牙通信模块、两路循迹模块、两路红外避障模块、舵机和超声波模块、L298N电机驱动模块,并通过LCD 1602液晶对小车与前方障碍物距离实时显示.测试表明,小车能够按照既定路线前进,在遇到障碍物时能够自动避障. 相似文献
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本文设计的自动循迹小车利用各种传感器原件,如红外传感器、循迹模块、超声波模块、温度传感器等对外部信息进行采集后传递给单片机.单片机再解析反馈的内容并下达指令给电机.在火焰检测传感器检测到火源时下达指令让风扇转动实现灭火,从而驱动电机控制小车按照事先预定的轨道行驶,在行驶过程中还可实现循迹、避障、遥控等功能.系统经过软硬件设计实现了预期的功能,具有无须人为干预、效率高、针对性强等优点. 相似文献
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设计了一种智能循迹小车,介绍了系统总体,STC12C5A60S2单片机为智能小车控制核心、电源模块、电机驱动电路、循迹传感器模块及相应软件设计方案。通过红外反射式传感器TCRT5000检测路面信息,单片机内部程序控制L298N全桥驱动芯片结合单片机输出的PWM信号控制小车左、右轮电机的运动速度,从而使小车能够沿着引导轨迹自动行驶,实现小车自动循迹的目的。试验结果表明,整个系统的电路结构简单,可靠性高,实现了预期的智能循迹小车功能。 相似文献
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针对智能小车自动循迹的要求,提出由车体模块、电源模块、单片机控制模块、电机驱动控制模块、电机模块、传感器模块等构成智能小车硬件系统,利用Keil u Vision2集成开发工具进行C51高级语言程序设计,开发出控制软件。利用红外传感器检测小车的循迹轨道,并以STC89C52RC单片机为控制芯片根据接收的轨迹信息发出相应的控制指令,通过L298N驱动控制模块来驱动小车以实现循迹的系统总体设计方案,并采用了"反转式转向模式"和"反转式刹车模式"。实验结果表明,该智能小车硬件系统各模块选择合理,控制软件高效可行,小车整体性能优良,成功实现了自动循迹的功能,且采用"反转式转向模式"和"反转式刹车模式"实现了极好的转向及刹车效果。 相似文献
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使用模块化设计,通过实验模块包括STC12C5A60单片机系统、直流电机与基于L298N的驱动电路、蓝牙模块、红外探测模块,实现小车智能循迹功能,用蓝牙手机模块控制小车。利用windows Phone手机控制软件的编程设计实验,使学生的电路设计与软件开发能力得到充分锻炼。 相似文献
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唐琳 《赤峰学院学报(自然科学版)》2013,(24):23-24
本文在前期应用研究的基础上,以STCB89C52单片机为控制核心,根据超声波测距、循迹等感测模块采集路面信息,实现自动识别障碍物并及时调整小车行驶走向,同时配置火焰红外线感测模块,实现小车对火源的自动感测并寻径,最终实现小车的自适应行驶、避障的功能．智能消防灭火车模型的研制与开发,为交通工具的智能化发展提供了一个合理可行的方向．同时也为消防工作的智能化提供了有力的技术支持． 相似文献
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《海外英语》2007,(5):10-11
Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help? 相似文献
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邱崇丙 《唐山师范学院学报》2014,(1):21-23
汉字的六书,《说文》对“转注”一类,语焉不详。后世学者提及转注,也仅限于许慎所举出的例字。《汉字例说》一文,作者从转注的角度综合考虑,对部分现代常用字作了分析,跟传统的解释有所不同。希望能抛砖引玉,互相切磋,以推进学术研究。 相似文献
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《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love. 相似文献
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Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject. 相似文献
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Rachel Zupek 《海外英语》2007,(11):40-41
我们绝大部分人都同意一件事情——我们喜欢金钱。但是你对金钱的喜欢之情足够到让你创立一份事业么?.财富通常被人忽视,主要在于人们不能真正了 相似文献
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Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities. 相似文献
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RUZBEHANI Mohsen 《重庆大学学报(英文版)》2004,3(1):20-25
1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec… 相似文献