西门子S7—200系列PLC在机房环境监测系统中的应用

在本文中,设计了一套基于西门子S7-200PLC的机房环境监测系统,该系统可监测温度、湿度等机房环境参数、UPS运行状态和智能空调系统的运行状态。该系统还可通过GSM短信息的方式自动地将异常状况及时通知有关工作人员,实现机房无人值守。     

一个智能型模糊专家系统开发工具--IFEST

本文在对模糊推理问题分析抽象的基础上,讨论提出了一种具有普遍应用价值的模糊知识表示方法和相应的推理方法,并设计实现了一个具有智能引导功能的模糊推理专家系统开发工具--IFEST.IFEST采用智能引导的机制,用友好的、问答式的会话来逐步引导用户一步步地建立系统,并以图形化的方式展示系统知识库,极大地方便了模糊推理专家系统的构建.     

嵌入式无线智能家庭网络的远程控制

为了更好地解决智能家电的远程控制问题,介绍了一种通过PC机和手机短信实现家电设备远程控制的智能家庭网络设计方法,给出了家庭网络的组网方式,并详细阐述了嵌入式家庭网关的软硬件设计及其对家电设备的控制实现方法.测试结果表明,该系统性能稳定可靠,验证了该设计方案的有效性.     

监控式遥控机器人初探

本文初步探讨了遥控机器人监控的基本概念,得出这样一种认识:监控方式是机器人向智能化发展的一个恰当模式,监控系统是由人的高级智能与机器人的低级智能构成的系统.监控是系统中这两种智能相互作用的过程,人的智能应当能够在机器智能的不同级别上输入,我们研制了一个遥控机器人监控操作器的实验系统,通过实例和实验作了说明.     

PLC在机房环境监控系统中的应用

基于PLC设计了一套机房环境监控系统,系统可监测机房环境、UPS运行状态、智能空调运行状态。系统可通过GSM短信息的方式将异常情况及时通知工作人员,实现机房的无人职守。     

基于无线传感网络的智能输液监控系统设计

为了解决目前医用输液监控普遍采用人工控制方式存在的一些缺点,设计了一种基于无线传感网络的智能输液监控系统,该系统分为智能输液监控器装置和远程无线监控平台.智能输液监控器以STC11F04E单片机为控制核心,采用称重传感器和自动断液控制阀实现对输液过程的自动监控,系统可以通过自动或者远程控制实现输液过程的自动切断,确保输液过程的安全.监控平台可以同时实现对多台输液监控器装置的监控与管理,实现无线组网.对所设计的系统进行了试验测试,结果表明该系统可以很好地实现无人看护远程智能输液的监控效果,适合推广应用.     

基于电话线的自动数据传输系统

介绍了一种基于电话线传输,利用移频键控通信方式的自动信息采集通讯系统.该系统可以利用电话线完成智能小区数据的自动采集、存储,实施小区的远程监控,对数据的采集准确及时,彻底解决了目前数据采集系统作用距离短、可靠性差或需要布线、造价高等问题.该种数据通讯方式可用于工业监控和智能小区建设,特别适用于非智能小区的智能化改造.     

语音交互技术在矿山救护队应急救援管理系统中的应用

针对现有矿山救护队应急救援管理系统存在数据录入实时性和交互性较差、应急处置消息传递手段落后等问题,将语音交互技术应用到矿山救护队应急救援管理系统中,实现了系统报警信息的智能录入和通知公告的语音自动播放等功能。采用语音识别技术智能录入接警信息,快速生成接警记录单,并实时跟踪接警处置情况;采用语音合成技术将通知公告和待办提醒通过语音提醒用户,避免工作延误。测试结果表明,该系统的平均语音识别率为90%以上,语音合成正确率为100%,通过语音识别方式录入接警信息速度明显快于手写和打字方式。现场应用结果验证了该系统的有效性和稳定性。     

计算机智能导师系统的分析与研究

在智能化的教学过程中,通过不断地研究找寻到一种计算机智能导师系统,在计算机环境中用导师指导的方式来完成教学的工作,这是在现有条件下对教学任务和教学策略的一种补充完善,也是未来智能教学的发展方向。通过对智能导师系统结构模型的建立和分析,通过对智能导师系统操作功能的设计以及教学推理机的构建,对计算机智能导师系统进行了分析和研究,以期对未来的智能教学作出适当贡献。     

基于网络一致性的多智能体跟踪控制

基于动态网络一致性理论,研究外部向量场变化情况下的分布式多智能体的队形保持和跟踪控制问题.利用邻近多智能体间共享的信息,智能体以一致协商的合作方式既控制自身运动轨迹,同时又保持了一定的队形.针对多智能体之间形成的最近邻耦合网络拓扑进行分析后,提出了多智能体一致性动态控制律的设计方法,可方便地对系统的极点进行配置.还提出了一种利用分散的队形控制分解中心领航者作用的方法,并给出了系统稳定性的条件.研究结果显示,队形稳定性问题仅受到通讯拓扑结构的影响,可以通过分解降阶的系统解决,而向量场的特性只影响系统跟踪性能.仿真例子显示了方法的正确性.     

Working with expert systems: Three case studies

Three case studies were conducted on the implications of the use of expert systems for the work of clerks and operators in Britain. An expert system had been introduced in a process control application. The operators' work was deskilled. The second case was a fault diagnosis application. An operator was very happy with his new work. In the third case, insurance clerks received training to operate an expert system which extended the scope of their work. In conclusion, it is suggested that expert systems extend the range of work which can be automated, but may not have unique impacts.     

The Development and Evaluation of a Speech-to-Sign Translation System to Assist Transactions

The design, development, and evaluation of an experimental translation system that aims to aid transactions between a deaf person and a clerk in a post office (PO) is described. The system uses a speech recognizer to recognize speech from a PO clerk and then synthesizes recognized phrases in British Sign language (BSL) using a specially developed avatar. The main objective in developing this prototype system was to determine how useful it would be to a customer whose first language was BSL, and to discover what areas of the system required more research and development to make it more effective. The system was evaluated by 6 prelingually profoundly deaf people and 3 PO clerks. Deaf users and PO clerks were supportive of the system, but the former group required a higher quality of signing from the avatar and the latter a system that was less constrained in the phrases it could recognize; both these areas are being addressed in the next phase of development.     

Pool size,job stressors,and health problems: A study of data entry clerks

A study was conducted of the health problems of two groups of data entry clerks drawn from 39 government agencies’ pools. One group was formed of 182 clerks who worked in large pools, whereas the second one was composed of 87 clerks in small pools. The clerks who worked in large pools were characterized by a higher rate of occurrence of symptoms of mental health problems (measured by the Ilfeld Index), as well as a higher degree of use of sleeping pills and tranquilizers, than those who worked in the small pools. The effect of pool size was indirect and originated from the more intense job Stressors found in the large pools: greater pressure to increase output, more fragmented work, and bureaucratic work relationships. A more extensive analysis showed the lack of recognition and mobility as a characteristic of all work pools and a major factor of mental health problems.     

Workload and musculoskeletal problems: a comparison between welders and office clerks (with reference also to fishermen)

Previous studies have shown that subjective as well as clinical shoulder signs and symptoms are more common among welders than among office clerks. In the present study we wished to further evaluate the influence of different jobs on musculoskeletal problems, as well as the relationship between objective signs and subjective symptoms. This study confirmed that symptoms and signs from the shoulder were more common among the welders, who also had more subjective symptoms and clinical signs from other parts of the musculoskeletal system, Range of motion in different joint systems was, however, similar in the two groups except in external rotation of the shoulder, where welders had a more limited range. The degree of co-existence of subjective symptoms and clinical signs differed between different parts of the musculoskeletal system and was low particularly in the low back, hips, and ankles. This indicates low validity of many common clinical methods for determining musculoskeletal dysfunciion. General health was good in both vocational groups and isometric strength for the welders was intermediate between that of office clerks (who had lower strength) and that of fishermen (who had higher strength, as disclosed in a previous investigation). To a similar degree welders and fishermen also had objective signs from most parts of the musculoskeletal system, whereas subjective symptoms from some parts of the body and medical consultations due to these problems were more common among welders. Atrophied shoulder muscles were more common among welders than among fishermen, whereas crepitations in the shoulder tended to be more common among the fishermen. This indicates that heavy dynamic work and prolonged static work may both induce shoulder injuries, but of different types.     

Workload and musculoskeletal problems: a comparison between welders and office clerks (with reference also to fishermen).

Previous studies have shown that subjective as well as clinical shoulder signs and symptoms are more common among welders than among office clerks. In the present study we wished to further evaluate the influence of different jobs on musculoskeletal problems, as well as the relationship between objective signs and subjective symptoms. This study confirmed that symptoms and signs from the shoulder were more common among the welders, who also had more subjective symptoms and clinical signs from other parts of the musculoskeletal system. Range of motion in different joint systems was, however, similar in the two groups except in external rotation of the shoulder, where welders had a more limited range. The degree of co-existence of subjective symptoms and clinical signs differed between different parts of the musculoskeletal system and was low particularly in the low back, hips, and ankles. This indicates low validity of many common clinical methods for determining musculoskeletal dysfunction. General health was good in both vocational groups and isometric strength for the welders was intermediate between that of office clerks (who had lower strength) and that of fishermen (who had higher strength, as disclosed in a previous investigation). To a similar degree welders and fishermen also had objective signs from most parts of the musculoskeletal system, whereas subjective symptoms from some parts of the body and medical consultations due to these problems were more common among welders. Atrophied shoulder muscles were more common among welders than among fishermen, whereas crepitations in the shoulder tended to be more common among the fishermen. This indicates that heavy dynamic work and prolonged static work may both induce shoulder injuries, but of different types.     

Ergonomic research in German travelling mail service. Part 1: ergonomic problems and research in railway mail vans

Ergonomic problems in the travelling mail service are described, showing the necessity of ergonomic research work within the railway mail van, to obtain results suitable for evaluating the strain of travelling mail office clerks as well as for designing the system of a mail railroad car. The special methodological procedure of this type of ergonomic field research is discussed.     

办公系统中的工作流管理

本文主要介绍了智能协作办公系统ＩＣ－ＯＦＦＩＣＥ中的工作流管理功能及其实现技术。     

Questionnaire development: an examination of the Nordic Musculoskeletal questionnaire

This paper describes the outcome of user trials of the Nordic Musculoskeletal Questionnaire which encompassed the views of the following groups: data entry clerks, technical staff, administrative clerks and 481 subjects employed in 10 supermarkets. A significant number of improvements was identified, especially concerning its wording, layout and administration. This has led to a standardized version being produced for use in studying the prevalence of reported symptoms in many types of occupational groups.     

Analyzing court system congestion with Q-Gert network modeling and simulation

Judiciary court delay and congestion is one of the more serious problems confronting local, state and federal governments. Although a court system is basically a well-defined system of servers (i.e. administrators, clerks and judges) and queues of cases waiting to be tried, the application of operations research/management science techniques to court systems has been minimal. This paper will present a comprehensive Q-GERT network model and simulation analysis of a county court system. The model development is described in detail, and a general discussion of the simulation results and their use is presented.     

Ergonomic research in the German travelling mail services Part 2: results of ergonomic research in railway mail vans

The travelling mail office clerks are shown, by medical examination and sociopsychological questionnaire, to be a very homogeneous naturally self-selected group with a low average age. The analysis of tasks shows a disadvantageous distribution of some main tasks over the work shift. Energy expenditure and cardio-vascular strain above physiological endurance limits occur mainly with the tasks of loading, handling and emptying mail bags. Environmental factors are mainly within acceptable standards. Fast-time simulation studies show that proposals can be made for organisation work (by job rotation) and selection of TMO clerks based on their individual working capacity.