基于ISD2560的公交车报站系统的模拟设计

该文介绍了一种城市公交车报站系统的工作原理,提出了由控制器AT89C51单片机,语音处理器ISD2560语音芯片,显示器FYD12864,及其它外围电路组成的公交车语音报站系统。该系统是提供公交服务的一种很好的手段,值得广泛推广和使用。     

基于GPS技术的公交车智能报站及液晶显示系统设计

针对目前公交车手动电子报站的不足,设计了一种新型自动报站系统。系统主要由STC89C52单片机、GPS、LCD12864、WT588D语音模块和键盘组成。通过对公交车行驶中的经纬度信息进行处理,实现了公交车自动语音报站和液晶显示双重功能,能够使驾驶员从手动报站的模式中解脱出来,从而更加专心于行驶,减少了安全隐患。本设计给出了系统的总体结构和软硬件设计,是公交智能化的一项重大改进。     

基于单片机的公交车自动报站器的设计

本文针对公交车上自动报站的这一现实需要,以单片机为核心设计了一个系统,在该系统之中单片机通过对语音芯片的控制进而实现了公交车的模拟语音报站.在这一系统之中采用的STC89C52对整个系统之中的硬件进行控制.以ISD4004语音芯片为核心建立公交车报站的语音数据库,在报站的过程之中,在单片机的控制之下,语音信息能够实现自由组合,进而能够自主的进行多样化的语音报音;在语音播报的过程之中LM386在这一系统之中的作用是拨出语音和相关的提示音,在这一过程之中,单片机还可以将站点的相关信息显示在LCD液晶显示器之上.本文设计的基于单片机的公交车报站系统具有结构简单,运行流程简洁,使用灵活,在播报的过程之中音质清晰自然等优点,这一系统在社会之中具有一定的实用价值.     

基于51单片机的公交车报站系统

现在大城市公交车基本上实现智能化,报站只需要按一个键即可完成语音提示,本文向广大电子爱好者提供一款简易的自制公交车报站系统的制作方法,供大家业余制作参考。此公交车报站系统主要可分为四个部分:单片机控制部分、语音播报部分、液晶显示部分和键盘输入部分,采用51单片机作为主控制芯片,利用ISDl420P实现语音报站,显示采     

基于单片机的公交车自动报站系统设计与实现

提出了一种用单片机控制语音芯片进行公交车语音模拟报站的方法。系统硬件利用STC89C52作为CPU进行总体控制。通过ISD4004语音芯片建立语音信息库,对语音信息进行自由组合,形成变化多样的语音信息;利用LM386功能播出语音信息以及提示语音,同时运用LCD液晶显示器进行站数显示。该公交车报站器结构简单,使用灵活,功能稳定,音质自然、清晰,无论对于社会或者科研都有一定的研究价值。     

公交车智能自动报站系统

随着城市交通的快速发展,公交汽车为外出的人们提供了方便快捷的服务.一款稳定良好的公交车报站系统,不仅可以给市民出行带来方便,还可以提供城市形象.本文设计的一款公交车智能报站系统模型,利用STC89C52作为主控模块,用红外收发模块电路、WT588D语音模块和LCD12864液晶显示器实现了公交车声文并茂的自动报站、并语音提示提前下车准备.整个系统结构完整,性价比高,具有一定的实用价值.     

公交车自动报站系统的设计

本文介绍了一种新型的公交车自动报站系统的设计原理,同时提供了一种以89C52单片机为核心。控制ISD4004语音芯片以及大屏幕LED点阵显示的新方案。     

基于单片机的公交车智能语音报站和液晶显示系统设计

采用单片机AT89C51作控制核心,语音芯片ISD2560实现语音的存储和回放,LCD进行汉字显示,设计了公交车智能报站系统。实现了公交车站台语音播报和液晶显示双重功能。     

TTS在智能公交报站系统中的应用

在传统公交车报站系统中,采用"录音-存储-回放"的方法要求存储器的容量较大。为解决这一问题,结合GPS技术和TTS技术,设计了一种新型公交报站系统。该系统以TTS方式输出语音,使存储器存储的不是语音信号波形参数信息,而是播报语音汉字文本信息。试验结果表明,采用这种方式,存储空间只用到传统方式的17.1%,节省了存储空间。     

一种基于nRF9E5公交车预报及自动报站系统的设计与实现

基于传统公交车报站系统是借助公交车司机的人工操作来完成的,因此,误报和漏报现象是不可避免的,而且候车人也不知道关于公交车的一些信息(XX路公交车什么时候到达XX站)。本文介绍一种公交车的预报及自动报站系统,可解决传统公交车报站系统的一系列问题。本系统综合运用计算机技术、无线数据通信技术和电子技术,它主要由车载通信子系统和站点通信子系统组成。车载通信子系统定时向外发射本车的车次等信息,当公交车到一定的距离时,站点通信子系统就会接收到信息,并将接收到信息以电子显示的方式预报给候车人;站点通信子系统也定时向外发射站点信息,当公交车快到某站台时,车载通信系统就会接收到信息将到达某站,然后它以语音的形式将信息告知车上的乘客。这两个通信系统借助无线收发电路,实现了公交车的预报及自动报站,提高了公交车的服务水平,将吸引更多人来乘坐公交车,有利于提升城市交通和公交的良好形象。     

ISD2560在门禁系统语音播报中的应用

设计并实现了由AT89S51和ISD2560组成的门禁系统语音播报系统。系统通过按键方式实现语音的分段录制,应用ISD2560信息检索工作模式以及按键控制工作模式,实现语音的选择播放,并且给出了该系统的硬件电路及一些主要的软件设计流程图。     

基于HT46RU232单片机的智能家居电话远程控制系统

以HT46RU232单片机为核心,配接DTMF的MT8870解码芯片和ISD2550语音芯片,使用电话通信网络,设计一个智能家居电话远程控制系统.用于校验用户身份、远程控制家用电器、语音提示引导操作、家电状态查询等.可使操作者根据各种提示音及时了解受控对象的有关信息,并通过电话远程控制多个受控对象,实现家电的远程智能化...     

基于单片机智能控制系统的软硬件设计

介绍了由单片机AT89C2051、数码语音芯片ISD2560及42D125型四相反应式步进电机组成的智能仪器系统的设计与实现,给出系统的硬件电路及相应部分的软件源程序。本系统硬件电路设计简单,便于调试,利用单片机实现对步进电机的定位控制已成功地应用于对测试模型的精确定位。语音系统部分不仅可以作为电脑语音系统的语音板,还可以作为语音服务系统的子系统,灵活地实现了语音的分段录取、组合回放和自动控制等功能。实际应用表明,该系统的设计方案对其它各种智能控制仪器的研发具有一定的参考价值。     

Information system development activities and inquiring systems: an integrating framework

This article presents a framework that maps information system development (ISD) activities on systems for the creation of knowledge. This work addresses the relevant and persisting problem of improving the chances of ISD success. The article builds upon previous research on knowledge aspects of ISD, abandoning the idea of a monolithic approach to knowledge and presenting a pluralistic approach based on the idea that different inquiring systems can support micro-level ISD activities. The article is divided into two parts. The first part presents the theoretical development of the framework based on ISD literature and on Churchman's (1971) inquiring systems. The second part presents the use of the framework in an ISD project. The case is used to show the applicability of the framework and to highlight the advantages of this approach. The main theoretical implication is that the framework provides a new way to see the development of a system in terms of the knowledge created in the process. The main practical implication of the framework is that it improves the managers' ability to guide ISD activities as knowledge activities embedded in a knowledge process, a crucial element in development projects.     

基于TA8435及ISD4004的旧电池回收机控制系统

针对废旧电池回收机的性能要求,采用高性能低成本的单片集成步进电机驱动芯片TA8435和语音芯片lSD4004结合单片机AT89S52完成了旧电池回收机控制系统,采用TA8435和ISD4004单片集成芯片使系统的灵活性和可靠性得到增强.具体介绍了系统硬件电路设计和软件设计流程,该控制系统灵活可靠,具有较高的性价比.     

What affects information systems development team performance? An exploratory study from the perspective of combined socio-technical theory and coordination theory

Quality is an important factor in information systems development (ISD), and ISD team performance closely relates to quality. To better understand ISD teams, we empirically tested a model on ISD team performance by combining socio-technical theory and coordination theory. Using existing empirical studies and data collected from three well-known ISD companies in China, our research results identified influential characteristics of ISD team performance, and revealed similarities and differences between China’s ISD team performance and those in other countries. By the results, we find that knowledge sharing and major do not affect team performance. The compensation satisfaction to job performance is not significant in China, either. Our research provides suggestions for building and supporting ISD teams that could lead to performance improvements.     

Effective organizational improvisation in information systems development: Insights from the Tencent messaging system development

Organizational improvisation has been increasingly observed in information systems development (ISD), which leads to both positive and negative results. Extant studies have examined how to conduct effective improvisation, but findings are mainly based on variance-based models; a process model is missing. Our study fills this gap by conducting an in-depth case study of the Tencent messaging system development. Our study identifies a four-phase process model featuring, a continuous iteration between improvisational search and build. Our findings make important contributions to organizational improvisation literature in ISD and general management and provide a step-by-step guide for ISD managers to conduct effective improvisation.     

A taxonomy of political processes in systems development

Significant resources invested in information system development (ISD) are wasted due to political manoeuvres. Prior research on ISD politics has contributed mainly through theoretical development and case studies. This has enhanced understanding of relevant concepts, political tactics and conditions facilitating politics. However, there is limited understanding of the different processes through which politics unfold. This paper uses 89 ISD projects to develop a taxonomy of political processes in ISD. The taxonomy includes three distinct processes: Tug of War, wherein multiple parties strive to gain project control; Obstacle Race, which involves efforts to resist and pursue the project; and Empire Building, wherein the project is used as an instrument to enhance political or resource bases. The taxonomy is explained using the non‐proponents' view of the project and the balance of power between system's proponents and non‐proponents. We also discuss the emergent taxonomy's implications for how politics can be managed and studied.     

Rationality concepts in information system development methodologies

The purpose of this paper is to demonstrate that current practices and theories of information systems development (ISD) could benefit from a more explicit consideration of concepts of rationality. Many ISD methodologies already pay some attention to more than one rationality concept but they often do not fully recognize this, fail to strike a proper balance between them, and consequently fall short in cases where system success depends on a rationality concept that is not well catered for in a particular methodology. This paper explores four rationality concepts (formal, substantive, communicative, and emancipatory) and their implementation in seven ISD methodologies. The first two rationality concepts are drawn from Max Weber's “theory of organization” and the latter two from the “critical social theory” of Jurgen Habermas.