六通道航模遥控发射接收机电路剖析
上传时间: 2013-10-19
上传用户:qq527891923
目录 一、Smart Phone Market Share 1.1、中国智能手机销售量与变化状况 1.2、智能手机操作系统份额走势 1.3、智能手机销售价格走势 二、展讯智能手机方案 三、TI 无线充电方案 四、Freescale G+M二合一 Sensor 五、NXP NFC 六、TI 五合一 无线芯片 展讯智能手机方案框图
上传时间: 2014-12-30
上传用户:blacklee
无线遥控电路
上传时间: 2013-10-26
上传用户:wcl168881111111
针对现有遥控电器开关的节电性不好、使用寿命短等缺点,文中采用低功耗芯片Si1000,设计了一种新的可编程无线遥控多路开关,以实现对多路照明灯的遥控控制。详细阐述了整个电路的软硬件设计,并对其进行了实验验证,为无线电遥控提供了合理、可靠的解决方案。
上传时间: 2014-04-24
上传用户:zhyfjj
介绍GSM 无线路灯遥控遥测系统所实现的主要功能, 详细介绍该系统的上位机和下位机设计,并提出技术难点的解决方法。
上传时间: 2013-10-29
上传用户:胡岸888
传统的机械式墙壁开关,是一开一关的简单控制方式,且大多是在86型暗盒上实现的。要想在86×86×50的暗盒里实现射频遥控开关,就必须考虑到几个因素:86型暗盒的空间;只有l 根火线,无零线,不能再布线;不能影响被控电器原功能的使用;1个遥控器(即上位机中央集成控制系统)实现对多个开关终端控制(一对多),并且与其他遥控器不能发生冲突。
上传时间: 2013-10-17
上传用户:yulg
智能雷达天线罩可以有效地选择工作频率和微波性能。文中从结构研究和材料研究两个方面综述了智能雷达天线罩的发展,分析了各种智能雷达天线罩的优缺点和未来的发展趋势。
上传时间: 2013-10-24
上传用户:born2007
接收器像个U盘一样插在笔记本侧面,遥控器没有对准红外接收头啊。这里其实没太大关系的,没对准的话,白色墙面也能帮你反射,还不满意的话可以用USB 延长线调整。实际测试,支持家里几乎所有遥控型号,测试距离4.5 米,在两台电脑上测试成功,支持常规功能和高级功能,更多功能期待和大家一起完善。
上传时间: 2013-11-09
上传用户:a82531317
在研究传统家用燃气报警器的基础上,以ZigBee协议为平台,构建mesh网状网络实现网络化的智能语音报警系统。由于传感器本身的温度和实际环境温度的影响,传感器标定后采用软件补偿方法。为了减少系统费用,前端节点采用半功能节点设备,路由器和协调器采用全功能节点设备,构建mesh网络所形成的家庭内部报警系统,通过通用的电话接口连接到外部的公用电话网络,启动语音模块进行报警。实验结果表明,在2.4 GHz频率下传输,有墙等障碍物的情况下,节点的传输距离大约为35 m,能够满足家庭需要,且系统工作稳定,但在功耗方面仍需进一步改善。 Abstract: On the basis of studying traditional household gas alarm system, this paper proposed the platform for the ZigBee protocol,and constructed mesh network to achieve network-based intelligent voice alarm system. Because of the sensor temperature and the actual environment temperature, this system design used software compensation after calibrating sensor. In order to reduce system cost, semi-functional node devices were used as front-end node, however, full-function devices were used as routers and coordinator,constructed alarm system within the family by building mesh network,connected to the external public telephone network through the common telephone interface, started the voice alarm module. The results indicate that nodes transmit about 35m in the distance in case of walls and other obstacles by 2.4GHz frequency transmission, this is able to meet family needs and work steadily, but still needs further improvement in power consumption.
上传时间: 2013-10-30
上传用户:swaylong
为了能够满足基站易于选址、优质快速的建站要求和易维护、低成本、高可靠的运行要求,本文对以方舱来实现一体化结构基站做出一番探讨。从系统设计的观点阐述了移动通信高性能基站天线设计的几个关键问题,介绍了智能天线技术在基站中的应用,并且用HFSS软件仿真了一种新型的对称阵子天线,该天线驻波比小于2的带宽可以达到60%,具有良好的宽频带特性。 Abstract: In order to meet the station construction requirement of easy site selection and fast base station, and meet the operational requirement of easy maintenance, low cost and high reliability, this paper discussed the unified architecture base station using shelter. Several key problems of high performance mobile communication base station antenna were illustrated from the view of system design, the application of smart antenna in base station was also introduced. And a novel dipole antenna was simulated by using HFSS, the VSWR of the antenna is less than 2, and the bandwidth was reach to 60%. So it has good broadband properties.
上传时间: 2013-11-20
上传用户:linlin