基于ARM920T的嵌入式GPS接口设计与实现

本文讨论了基于ARM920T的嵌入式GPS系统实现方法,分析并改进了Linux操作系统下GPS定位模块、原始报文解析方法以及驱动程序的设计方法;设计并实现了基于ARM920T处理器的嵌入式GPS接口模块,在基于S3C2410AL-20开发板上实现了星型状态转换的基带信号处理方法;通过解析状态的数据-信息标志的依赖关系,实现了星型状态转换,从而 减少了GPS模块的响应时间,最终实现快速、准确的定位。     

GPRS与GPS在汽车信息服务系统中的设计应用

本文分析了基于嵌入式处理器(Intel SitSang)的汽车信息服务系统。该系统由ARM9嵌入式处理器模块、GPRS模块、GPS模块、汽车安防信息采集和内部故障检测模块、LCD显示模块以及中心台等部分组成。重点介绍了GPRS模块和GPS模块的嵌入式开发．以及如何应用这两个模块实现短信息收发、定位信息的采集和电子地图显示、定位信息和汽车状态故障信息的传输、用户和控制中心台实时的交互、Internet的实时接入与通信等系统功能，实现了一种智能交通系统的可行方案。     

基于ARM的车载导航定位终端硬件设计

本文研究与设计了一种新型车载导航定位系统的车载导航定位终端,该定位终端以32位ARM微处理器、GPS模块及GSM/GPRS模块为核心。详细介绍了终端的电源系统、通信接口、摄像系统与采集系统的设计,提出了采用ARM的2个32位定时器和PWM定时器配置,结合软件模拟全双工通信串口的新技术,共模拟了5个全双工通信串口,解决了对串口资源的需求。试验表明这种新型车载终端能满足导航定位的需求。     

一种基于S3C4480平台的GPS终端

本文介绍了一种基于三星公司ARM7处理器S3C4480设计而成GPS终端系统.系统通过外部HOLUX GR-85 GFS模块接收并解析NMEA协议的GPS消息,确定使用者的位置.通过GOS模块与S3C4480X的串口相连.将GPS信息采集到系统中并最终显示在LCD液晶屏上.     

基于ZigBee技术的嵌入式无线温度报警系统

为了实时分析温度并及时处理危险,设计了基于ZigBee技术的嵌入式无线温度报警系统.系统采集部分由温度采集模块和ZigBee子节点传输模块组成,处理部分由ZigBee主节点及ARM9处理器组成,单片机将DS18B20温度传感器采集到的数据通过ZigBee子节点发送到ZigBee主节点,CPU ARM9分析ZigBee主...     

基于ARM7-TDMI的多路温度信号采集系统设计

本文讨论了基于三星ARM7TDMI作为主处理器的的嵌入式数据采集系统的实现方法.以温度数采集为例,S3C44B0x ARM微处理器作为主控CPU,辅以多路数据采集模块采集数据,实现了智能化的温度数据采集、传输、处理与显示等功能.最后讨论了如何提高系统的可靠性和可扩展性.     

基于GPRS和GPS的嵌入式汽车防盗系统

基于先进的ARM技术,采用GPRS通信网络以及全球定位系统提出了一种网络型智能汽车防盗系统。系统由LPC2368微处理器、SIM300CZ无线通信模块、SKG17A1型GPS模块以及防盗传感器组成。微处理器对采集到的传感器信号进行处理,当确认有盗贼分子盗车后,切断汽车油路的同时给车主手机和监控中心发送汽车被盗的信息以及定位信息,真正解决了汽车的安全问题。     

基于ARM的波浪浮标设计

针对波浪的频率提取,提出了基于ARM与Linux系统的波浪浮标。以32位SP5V210作为核心处理器,扩展了加速度传感器模块、GPS定位及GPRS网络传输模块。借助希尔伯特算法对采集到的加速度进行分解和计算,推算出波浪的瞬时频率;对角加速度进行卡尔曼滤波之后将其积分,获取浮体姿态角。最终将所需要的数据通过GPRS网络发送回监控中心。试验证明系统能够有效地实现瞬时频率的计算,保证各数据采集与发送的准确性与可靠性。     

基于ARM的GPS/无源北斗互备PMU研究与设计

介绍了同步相量测量单元,在广域测量系统中实现对电力系统各个节点数据的同步采集和相量监测。分析了利用北斗信号的必要性和可能性,设计基于ARM处理器与DSP处理器相结合的双CPU的结构,完成对GPS信号和北斗信号的采集和处理,实现PMU单元的实时数据信息采集及时标数据的发送和接收,与以太网络连接。     

一种基于S3C44B0平台的GPS终端

本文介绍了一种基于三星公司ARM7处理器S3C4480设计而成GPS终端系统。系统通过外部HOLUXGR－85 GPS模块接收并解析NMEA协议的GPS消息,确定使用者的位置。通过GPS模块与S3C44BOX的串口相连,将GPS信息采集到系统中并最终显示在LCD液晶屏上。     

Assessing Ideational and Evaluative Skills and Creative Styles and Attitudes

This article describes the rationale for the multiphase creative problem solving process, and reports the findings from an empirical investigation conducted to facilitate the problem solving of managers. The ideational skills of the managers were assessed before and after training in a complete process of creative problem solving, along with their ideational attitudes, creative problem solving style (i.e., generator, conceptualizer, optimizer, or implementor), and evaluative skill (i.e., ability to recognize original ideas). The most important findings indicated that the training had a significant impact on the evaluative accuracy of the managers. They were significantly more accurate in their judgments about original ideas after training, both in their identification of original ideas and their recognition of unoriginal ideas. After training, the managers also gave more solutions and more original solutions to problems. Finally, several variables (e.g., the “preference for active divergence” attitude, and the conceptualizer process style) seemed to moderate the impact of training. Training was therefore effective, with specific effects that can be predicted from pre-training individual differences in attitudes and process style.     

高等院校行政分析与决策系统的设计与实现

为提高高等院校的管理水平和决策水平,充分利用校园网资 源,开发了高等院校行政财政分析与决策系统。解决了诸如数据的动态查询、自动生成报表 、网络环境下数据共享等技术问题,具有网上数据共享、图形界面友好和安全的保密措施等 特点。     

Stochastic balancing and approximation-stability and minimality

A new method of stochastic model reduction has recently been introduced by Desai et al. [1], [2]. The stability of the reduced order model has not previously, been considered. In this paper, we show that the stability of the reduced order model follows directly from the results of Pernebo and Silverman [3]. It is also shown that the reduced order model is minimal, in the controllability/observability sense. The relevance of this notion of minimality to stochastic minimality is made clear.     

Rank and select revisited and extended

The deep connection between the Burrows–Wheeler transform (BWT) and the so-called rank and select data structures for symbol sequences is the basis of most successful approaches to compressed text indexing. Rank of a symbol at a given position equals the number of times the symbol appears in the corresponding prefix of the sequence. Select is the inverse, retrieving the positions of the symbol occurrences. It has been shown that improvements to rank/select algorithms, in combination with the BWT, turn into improved compressed text indexes.