·原书名: WCDMA FOR UMTS-Radio Access for Third Generation Mobile Communication 作者:(芬)哈里.霍尔马 安提.托斯卡拉 [同作者作品] 译者: 周胜[同译者作品] 等 丛书名: 其他 出版社:机械工业出版社* ISBN:7111096681 上架时间:2002-1-19 出版日期:2002 年1月 页码:266 版次:1-1
上传时间: 2013-08-06
上传用户:y307115118
本次设计的简易智能电动车,采用AT89S52单片机作为小车的检测和控制核心;采用金属感应器TL-Q5MC来检测路上感应到的铁片,从而把反馈到的信号送单片机,使单片机按照预定的工作模式控制小车在各区域按预定的速度行驶,并且单片机选择的工作模式不同也可控制小车顺着S形铁片行驶;采用霍尔元件A44E检测小车行驶速度;采用1602LCD实时显示小车行驶的时间,小车停止行驶后,轮流显示小车行驶时间、行驶距离、平均速度以及各速度区行驶的时间。本设计结构简单,较容易实现,但具有高度的智能化、人性化,一定程度体现了智能
上传时间: 2013-04-24
上传用户:weimg001
上传时间: 2013-11-10
上传用户:vmznxbc
上传时间: 2013-10-31
上传用户:huyahui
霍尔电流,电压传感器,变送器的选型
上传时间: 2013-11-15
上传用户:Altman
特长 3相无刷电机控制用预驱动IC。采用高耐压CMOS制程位置检出可与3个霍尔元件或霍尔IC连接120度通电驱动PWM控制方式(上侧驱动)功率限制回路内藏电流限制回路内藏升压动作时的初期充电控制可能。回转数为3脉冲/360度。
上传时间: 2013-10-26
上传用户:koulian
摘要:系统d~STC89C52单片机为核心的控制模块、速度里程测量模块、温度测量模块以及声光报警模块等部分组成。系统利用霍尔传感器原理进行速度和里程的测量,通过Ds18B2O温度传感器进行温度测量,通过单片机实现速度、温度的警示。系统可作为自行车运动时的码表的使用。
上传时间: 2013-10-13
上传用户:dljwq
智能小车火焰检测也可以测速
标签: 霍尔
上传时间: 2013-12-04
上传用户:2467478207
生活中许多目标的高度和水平距离需要进行测量。目前主要的测量方法,仍以传统的皮尺丈量为主,测量效率不高,有时还很不方便,没有技术成熟的数字式测高测距产品。以基本的数学方法为理论依据,利用遥控小车做为载体,采用角度传感器测量角度、霍尔传感器测量水平距离等,通过单片机LM3S615进行数据计算,实现了对待测目标物体的高度、水平距离等数据的快速、精确和数字式的测量,高度测量精度可达99.06%,水平测量精度则可达98.06%。 Abstract: In our lives, the height and horizontal distance of some goals are needed to be measured. Because the currently used methods are still traditional tape-based measuring methods, and the measuring efficiency is low and inconvenient so some kinds of digital and portable measuring methods or instruments are needed. Based on the basic math theory, this paper designed and manufactured a portable, digital and remote controlled measuring mobile small vehicle, which assembled with angle measuring sensor for angle measurement and Hall sensor for horizontal distance measuring. MCU LM3S615 calculated the height and horizontal distance data gotten from these sensors. The measuring process is simple, the measuring results are more accurate and the measuring efficiency is higher than traditional measure instruments. The accuracy of height and distance measurement can reach 99.06% and 98.06%.
上传时间: 2013-10-30
上传用户:jackandlee
针对目前汽车追尾事件频发问题,提出一种防汽车车前和车后追尾的安全装置设计。该设计以高性能、低功耗的8位AVR微处理器ATmega8L为核心,结合霍尔式车速传感器、激光雷达测距装置和MMA7260QT加速度传感器,能够兼顾车前和车后,摒弃以往设计中只考虑车前或车后单一性缺点,尤其适用于高速、夜晚或新手行车。 Abstract: Aiming at the high frequency of vehicle rear-end collision,a safe device design of anti-vehicle rear-end collision is presented.In the design,the high-performance,low-power8-bit AVR microprocessor ATmega8L is utilized as a core combined with Hall-type speed sensor,laser-radar ranging devices and the acceleration sensor MMA7260QT.The design considers both the front and back of a car,and overcomes the drawbacks of former designs in which only the front or the back of the car is considered,so it is especially suitable for high-speed,night or the beginner’s driving.
上传时间: 2013-10-14
上传用户:GavinNeko