TMS320C6000以太网视音频设备网络参数设置
上传时间: 2013-11-10
上传用户:youlongjian0
介绍了一种基于单片机与超声波结合的倒车报警系统的设计过程,本系统采用NE555和CX20106A构建超声波发射与接收电路,通过单片机与数码管实现测距计算与实时显示,同时用户还可以通过按键设置倒车报警距离,当达到设定的报警距离时系统将进行语音报警。另外系统设置了分段指示灯(倒车安全、注意倒车、倒车危险),提高了倒车安全系数。经测试,该系统在10~250 cm范围内能实现准确测距,且通过数码管实时显示倒车距离,并进行声光报警。本系统弥补了中、低端汽车报警系统不能实现准确测距和实时显示倒车距离的问题,具有集成度高、测量范围广、成本低等特点,能满足驾驶员在实际倒车中的需求,具有一定的理论和实用价值。
上传时间: 2013-11-28
上传用户:ABCDE
无线遥控玩具汽车源程序
上传时间: 2013-10-22
上传用户:66666
汽车转向灯程序及pr0tues
上传时间: 2013-10-27
上传用户:432234
以Freescale的S12系列16位微处理器MC9S12HY32为核心,为某电动汽车设计了一款仪表盘,实现了车速检测、步进电机控制、LCD显示、故障报警等功能。利用芯片内部资源特性设计了其硬件结构及电路,根据仪表盘的原理和工作方式设计了软件流程,并介绍了基于脉冲整形的车速信号检测的硬件设计及基于滑动时间窗口脉冲统计法的软件设计。装车试验运行稳定,有很高的实用价值。
上传时间: 2013-11-01
上传用户:海陆空653
单片机控制汽车语音技术
上传时间: 2014-11-03
上传用户:ouyang426
MC34018双音频电话芯片
上传时间: 2013-10-24
上传用户:weiwolkt
为了使音频信号分析仪小巧可靠,成本低廉,设计了以2片MSP430F1611单片机为核心的系统。该系统将音频信号送入八阶巴特沃兹低通滤波器,对信号进行限幅放大、衰减、电平位移、缓冲,并利用一单片机负责对前级处理后的模拟信号进行采样,将采集得到的音频信号进行4 096点基2的FFT计算,并对信号加窗函数提高分辨率,另一单片机负责对信号的分析及控制显示设备。此设计精确的测量了音频信号的功率谱、周期性、失真度指标,达到较高的频率分辨率,并能将测量结果通过红外遥控器显示在液晶屏上。 Abstract: o make the audio signal analyzer cheaper, smaller and more reliable, this system sends the audio signal to the eight-order butterworth filter, and then amplifies, attenuates, buffers it in a limiting range, transfers the voltage level of the signal before utilizing two MSP430F1611 MCU to realize the audio analysis. One is charged for sampling and dealing with the processed audio signal collected by the 4096 point radix-2 FFT calculation and imposes the window function to improve the frequency resolution. The other one controls the display and realizes the spectrum, periodicity, power distortion analysis in high resolution which is displayed in the LCD screen through the infrared remote control.
上传时间: 2013-12-11
上传用户:jasonheung
以C8051F020为核心处理器,设计无线传感器网络数据采集系统。系统采用SZ05-ADV型无线通讯模块组建Zigbee无线网络,结合嵌入式系统的软硬件技术,完成终端节点的8路传感器信号的数据采集。现场8路信号通过前端处理后,分别送入C8051F020的12位A/D转换器进行转换。经过精确处理、存储后的现场数据,通过Zigbee无线网络传送到上位机,系统可达到汽车试验中无线测试的目的。 Abstract: This paper designs a wireless sensor network system for data acquisition with C8051F020 as core processors.The system used SZ05-ADV wireless communication module,set up a Zigbee wireless network, combined with hardware and software technologies of embedded systems,completed the end-node 8-locale sensor signal data acquisition.Eight locale signals were sent separately into the 12-bit ADC of C8051F020 for conversion through front treatment.After accurate processing and storage,the locale data was transmitted to the host computer through Zigbee wireless.The system achieves the purpose of wireless testing in vehicle trial.
标签: C8051F020 Zigbee 汽车测试 系统设计
上传时间: 2013-11-23
上传用户:dsgkjgkjg
首先研究CAN总线和SAE J1939协议,提出一种基于MC9S12HZ256微控制器的总线式汽车数字仪表解决方案。详细介绍SAE J1939协议的报文帧格式及应用层协议中发动机相关参数的定义,以及步进电机及其驱动和车速信号的处理方法。该数字仪表系统硬件平台由微处理器和信号采集和信息处理及显示等模块组成。软件设计部分编程实现了对CAN总线和各传感器数据的读取、处理。该系统能够实时反映车辆工况。 Abstract: In this paper,CAN bus and SAE J1939protocol are researched,and a vehicle digital instrument solution based on MC9S12HZ256MCU is proposed.The message frame format and some engine-related parameters’definition in SAE J1939application layer protocol are introduced in detail.Stepper motor and its driver,the methods of speed signal process-ing are also introduced.The hardware platform of vehicle digital instrument is composed by MCU,signal acquisition mod-ule,and signal processing and displaying module.Data receiving and processing from CAN bus and sensors are accom-plished by programming,and vehicle condition can be reflected in real-time.
上传时间: 2013-10-20
上传用户:huannan88