【正文】 本章主要是進(jìn)行系統(tǒng)軟硬件測試，在系統(tǒng)設(shè)計(jì)制作完成后的驗(yàn)證過程，也是很重要的一個(gè)部分。后來經(jīng)過一步一步的修改，最終實(shí)現(xiàn)了語音報(bào)時(shí)。本設(shè)計(jì)特點(diǎn)在于實(shí)現(xiàn)了智能數(shù)字時(shí)鐘系統(tǒng)和語音整點(diǎn)報(bào)時(shí)，由于之前沒有接觸過語音芯片，因此在設(shè)計(jì)前期很迷茫，后來在查閱相關(guān)資料以后，發(fā)現(xiàn)語音芯片的操作并沒有想象的困難。通過本次設(shè)計(jì)，學(xué)到了硬件方面的很多知識，熟悉了一些常用軟件的使用方法，如Altium designer以及Keil uVision4開發(fā)環(huán)境，使自己的實(shí)踐能力得到提高。通過老師和同學(xué)的講解，不斷的學(xué)習(xí)，使自身理論水平和設(shè)計(jì)能力有了提高，實(shí)踐方面，在以后的繼續(xù)學(xué)習(xí)中會更加注重這方面的培養(yǎng)。在畢業(yè)設(shè)計(jì)中期，自己也是及時(shí)將自己的問題反映給老師，自己的一些想法及時(shí)和老師溝通交流，而蔡老師是十分耐心的為自己解決，給出了許多指導(dǎo)性的意見。十分感謝自己的同學(xué)和師兄師姐。 page data refresh requests involve only the shipping of raw data to the client and are served faster.As depicted in Figure 2, the server identifies the boundary between two major classes of ponents: on one side there is the controlled system, posed by different devices, municating both through industrial (. Modbus, Fieldbus etc…) and web protocols (. TCP/IP) and conveying data originating from the controlled environment。2. the Control Interface Management (CIM)。 upon reception of server responses, the shell updates the internal data variables, which automatically refresh the registered business objects and associated widgets. This datacentric approach allows to redraw only the affected widgets, minimizing the putational effort and enhancing performances. ImplementationThis section reports our experience and evaluations in implementing a running prototype of the proposed MyHMI solution. Thanks to an opensource Modbus simulator, we simulated the logic and data flows of a milk bottling plant, posed of about twenty controlled variables, such as the liquid level and temperature of the milk tank, the state and speed of the automatic conveyor belt, and so on. Serverside implementationWe used Microsoft Windows CE and its builtin technologies: Web publishing architecture rely on the ISAPI+HTTPD daemon, all the model and business logic ponents have been developed as Microsoft COM objects, and the controller part of our MVC architecture has been implemented as an ISAPI DLL.The connection with the field has been achieved thanks to a runtime ponent (called OPC client) based on the OPC Data Access Custom Interface Specification , coupled with an OPC Server version . Thanks to the OPC architecture, we could raise the level of abstraction of the munication to the field, thus developing a prototype patible with almost all the industrial field protocols. Clientside implementationThe implementation strategy for the client side has been heavily affected by the constraints imposed from the target environment of the MyHMI project.Accordingly to the choices made for the server side implementation, we choose to exploit the Windows CE native browser, and to extend it with plugins for visual rendering. Many of the most innovative and powerful technologies on the market have been reviewed, considering features like: (i) Availability, flexibility, and portability of the solution for a wide set of operating systems and HMI terminals。? The graphical representation, which is designed separately, with an approach based on the well known concept of skin.Thanks to the new widget design and to the sophisticated rendering engine provided by Flash, the prototype was able to implement much more refined interfaces than usual HMI systems, both in terms of graphical appearance and of business logics (for instance, see the real time conveyor emulator in Figure7). Related WorkThe requirements, trends, and opportunities of current technological evolution in embedded system are widely recognized [6]. Some early works exist that describe how technologies from the Web environment can be applied to the industrial HMI applications. [7] outlines some possible approaches on how to use XML and Java for interface definition and configuration.However, our experience highlights that applying this plain technique can be painful in terms of performance if using low power devices with embedded operating systems.Other works (., [8], [10]) explore the integration of traditional field bus solutions with Eternity based munication between clients, but, instead of proposing a fullfledged Web based architecture, they offer a gatewaybased interface for transferring the information from the field to an officelike network. These approaches do not fully exploit the potentials that Web interfaces can provide (for example, in terms of richness of interfaces, adaptability and personification), because the serverside software architecture is not structured enough for that. Moreover, they usually refer to office PC platform for running the advanced remote , agentoriented, and distributed object architectures based on Web and XML technologies have been explored too, but their results are still in an early phase of development and typically require powerful hardware.Several research activities have gathered around the concept of OpenArchitecture Controllers , focusing on software solutions that offer as much portability and openness to any kind of device and operating systems as possible. They aim at studying the best mix of programming languages, and development architectures and frameworks for granting such flexibility. They often rely on Web technologies for their open availability and portability, but they don’t apply any effort for increasing the provided features or services. provided features or services. Finally, another category of works, such as , provide experience reports on practical application of Internetbased solutions to specific environments, but do not generalize their results to a general architecture for handling any kind of HMI problems.Our contribution with respect to the current research is in the definition of a lightweight Web based software architecture that features standard technologies like browsers, Web servers, and graphic players, that can be delivered on (networks of) embedded systems, delivering state of the art Web applications, including personalization, multidevice adaptivity, and remote notification, without the need of heavy hardware platforms like office PCs.ConclusionIn this pap