一种基于单片机控制的LCD人机界面方案

本文介绍了一种LCD人机界面方案,以飞思卡尔MC9SO8GT60型单片机为主控芯片,结合点阵液晶模块CA320340B进行系统设计,通过单片机和控制系统中MCU之间的串口通讯实现监控参数的获取及发送。该方案可直观准确地读取系统所需的参数和波形,实现对控制系统的良好监控,同时通过薄膜面板添加参数设定功能实现对系统的简单控制,可将其作为学生课外科技活动和电子设计竞赛的培训科目。     

A Study of Electromyogram Based on Human-Computer Interface

In this paper, a new control system based on forearm electromyogram （EMG） is proposed for computer peripheral control and artificial prosthesis control. This control system intends to realize the commands of six pre-defined hand poses： up, down, left, right, yes, and no. In order to research the possibility of using a unified amplifier for both electroencephalogram （EEG） and EMG, the surface forearm EMG data is acquired by a 4-channel EEG measurement system. The Bayesian classifier is used to classify the power spectral density （PSD） of the signal. The experiment result verifies that this control system can supply a high command recognition rate （average 48%） even the EMG data is collected with an EEG system just with single electrode measurement.     

Wireless User Perspectives in Europe: HandSmart Mediaphone Interface

HandSmart is one example of wearable device that can be used as a user interface for advanced mediaphones and it is based on MARISIL a Mobile Augmented Reality Interface Sign Interpretation Language. This paper will describe the interface and some of the applications of these new types of personal devices. The user-centered development methodology is discussed in brief at the end of the paper. Evolutions in technology have provided a variety of new opportunities for exploring and discovering virtual 3D worlds. Head-mounted displays and data gloves enable us to interact and immerse much better into the artificial generated 3D environment. Such devices have been advertised in the entertainment media and are recognized by the public as the symbols of virtual reality (VR). Augmented Reality that has the attribute of being more related to real world than VR by overlaying virtual sounds, feelings or visions onto our senses within the real world, can therefore extend our natural experiences. The authors believe that the new generation of mediaphones can embed these new techniques.     

面向任务的空基信息系统用户化人机交互设计

根据任务目标要求和执行过程,用户化定制空基信息系统人机交互界面和操作流程,使得系统人机交互功能更贴近于用户业务需求,更有效地协助用户实现其任务目标。具体方法是,以任务执行过程为主线,按照信息的获取、加工、存储、应用、分发等处理流程将任务分解为多个子任务,并以此为参照,将空基信息系统细化分解为多个子系统,然后根据各个子系统的操作要求定义系统操作员席位职责。一方面,面向任务目标要求和执行过程的系统功能分解方法确保了用户需求的落实;另一方面,多用户并行处理模式简化了用户操作视图,增强了系统的易用性和人机交互效率。该方法不仅可以在新系统研制过程中发挥良好作用,还可以在已有系统改造项目中得以应用。     

移动互联网终端技术

文章基于移动互联网终端类型、主流智能操作系统、人机交互界面及热点应用等方面的技术进展,分析了当前主要的移动互联网终端技术。文章认为由于移动互联网终端在系统硬件技术、人机交互技术、操作系统技术、商业模式和应用开发上的跳跃性发展,将带动移动互联网终端以及移动互联网应用服务市场的高速扩张;云计算概念的出现、应用服务概念的推广将进一步推动移动互联网的快速发展,移动互联网终端市场亦将呈现繁荣景象。     

A Universal Transducer Interface for Capacitive and Resistive Sensor Elements

This paper presents a new universal transducer interface.This interface, which is read out by a microcontroller, servicesthe following sensor elements: capacitors, platinum resistors,thermistors, resistive bridges and potentiometers. The A/D conversionis based on a first-order oscillator. A combination of classicaland some new measurement techniques has been applied on a singlechip to obtain high accuracy, good long-term stability and areduction of the effects of interference and parasitic elements.The circuit has been fabricated in a 0.7 µm CMOSprocess. The main test results are: an accuracy of 10–15bits and a resolution up to 16 bits while the measurement timeis in the range 1–100ms. These results hold over the temperaturerange –20°C to 80°C. Calibrationof the electronic part is not required. The number of externalcomponents has been kept to a minimum.     

Mobile Multimodality: A Theoretical Approach to Facilitate Virtual Device Environments

The classical strategy of multimodal interactions is to simultaneously utilise several modalities offered on a ‘single’ device. However, practical restrictions appear, especially in mobile communications, due to the limitations of device’s interfaces and the continuously changing communication conditions. Taking multimodality out of this single-device scenario, this paper introduces a theoretical framework for dynamic Multi User Interfaces-Device Binding (MID-B). MID-B facilitates dynamic adaptation and customisation of physically distributed devices (and their user interfaces) into one ‘virtual’ multimodal environment, thus introducing ambient awareness into user interfaces. In MID-B, one device assumes the role of a “controller” which detects and binds the interfaces and modalities available on devices in the vicinity. After discovery, it binds these modalities to deliver the actual mobile service.

AI虚拟数字人技术在融合媒体生产中的运用

重大活动无线电安全保障肩负着贯彻国家安全战略,维护社会稳定,维护国家形象的重要使命。通过对重大活动无线电安全保障工作内容的梳理,深化对无线电保障工作的认识,更好地服务于今后的重大活动无线电保障工作。     

视频处理算法中的SDRAM接口设计

提出了一种在视频处理算法电路中的SDRAM接口设计,它巧妙地利用SDRAM高效的Full-page模式和Ping-Pang模式,在性能和模式选择上进行了很好的折衷,为需要大容量、高吞吐率存储器进行高速率数据处理提供了新思路。     

A Long‐Range Touch Interface for Interaction with Smart TVs

A powerful interaction mechanism is one of the key elements for the success of smart TVs, which demand far more complex interactions than traditional TVs. This paper proposes a novel interface based on the famous touch interaction model but utilizes long‐range bare hand tracking to emulate touch actions. To satisfy the essential requirements of high accuracy and immediate response, the proposed hand tracking algorithm adopts a fast color‐based tracker but with modifications to avoid the problems inherent to those algorithms. By using online modeling and motion information, the sensitivity to the environment can be greatly decreased. Furthermore, several ideas to solve the problems often encountered by users interacting with smart TVs are proposed, resulting in a very robust hand tracking algorithm that works superbly, even for users with sleeveless clothing. In addition, the proposed algorithm runs at a very high speed of 82.73 Hz. The proposed interface is confirmed to comfortably support most touch operations, such as clicks, swipes, and drags, at a distance of three meters, which makes the proposed interface a good candidate for interaction with smart TVs.     

基于USB接口的数据采集系统

提出了一种基于USB接口,采用内置USB接口的微处理器芯片来实现的数据采集系统方案,并从硬件设计和软件开发两个方面对该方案进行了探讨。提出了3种硬件设计方案,并对其中一种方案进行了详细介绍；软件开发部分介绍了USB设备固件、USB设备驱动程序和数据采集系统应用程序设计。     

A System Framework for Map Air Update Navigation Service

The quality of navigation service is determined by the accuracy of the available data. For existing navigation services, a full map update is provided in order to keep the map data of mobile devices current. As content and services of mobile devices have recently been diversifying, the size of map data managed in mobile devices has increased, reaching several gigabytes in size. It generally takes tens of minutes to write several gigabytes of data into mobile device storage. For traditional navigation systems, a complicated storage structure called a physical storage format (PSF) is used to assure maximum processing performance of map data in mobile devices within limited resources. Consequently, even though modified navigation map data actually affects only a portion of a map, the full map data is updated because partial updates are not possible. In this paper, a navigation system is studied to solve this difficult partial map update problem. The map air update navigation system, which is the result of this study, provides real‐time partial map updating using wireless communications.     

Study of NiSi/Si Interface by Cross-Section Transmission Electron Microscopy

采用不同硅化工艺制备了NiSi薄膜并用剖面透射电镜(XTEM)对样品的NiSi/Si界面进行了研究.在未掺杂和掺杂(包括As和B)的硅衬底上通过物理溅射淀积Ni薄膜,经快速热处理过程(RTP)完成硅化反应.X射线衍射和喇曼散射谱分析表明在各种样品中都形成了NiSi.还研究了硅衬底掺杂和退火过程对NiSi/Si界面的影响.研究表明:使用一步RTP形成NiSi的硅化工艺,在未掺杂和掺As的硅衬底上,NiSi/Si界面较粗糙;而使用两步RTP形成NiSi所对应的NiSi/Si界面要比一步RTP的平坦得多.高分辨率XTEM分析表明,在所有样品中都形成了沿衬底硅〈111〉方向的轴延-NiSi薄膜中的一些特定晶面与衬底硅中的(111)面对准生长.同时讨论了轴延中的晶面失配问题.     

WCDMA lub接口流量控制算法设计与实现

在WCDMA系统中,lub接口是UTRAN（UMTS无线接入网）内的无线接口,用于连接UTRAN中的NodeB和RNC,是NodeB侧承载用户数据的重要接口。本文通过对已有流控算法的分析,研究了基于Iub Bufier占用率的反压流控算法和基于上行负载因子修正的流控算法,针对反压流控拥塞门限不可变的缺陷,采用上述两种算法相结合米缓解lub接口的拥塞、提高系统的吞吐率。并通过对Node B传输层和系统的乔吐率进行仿真,验证了该算法的有效性。     

A Cmos Interface for Thermocouples with Reference-Junction Compensation

This paper presents a CMOS interface for a thermocouple, includingreference-junction compensation. The interface contains a first-orderoscillator whose period is modulated by the signal from the thermocouple(V_X) and two other signals generated internally. One is abase-emitter voltage (V_BE) and the other is a PTAT voltage(V_PTAT). Linear combinations of the periods corresponding tothese two voltages are made by a µC, to obtain a reference signal anda temperature-dependent signal. The internal signals are required to provideauto-calibration for offset and gain and to measure the interface internaltemperature. Dynamic Element Matching is applied to generate an accurate andreliable PTAT voltage. The inaccuracy in the base-emitter voltage iscalibrated using a vertical PNP substrate transistor with multi-emitterareas. The applied modulator used in the circuit has a second-orderfiltering which suppresses low-frequency (1/f) noise. This filteringproperty enables the use of a low-cost CMOS process for the implementationof the circuit. The interface is able to measure a voltage(V_X) in the range of –27 mV to 100 mV, the measuredaccuracy of the system over a temperature range of –25°C to75°C is 550 ppm of V_X ± 2µV. The inaccuracyin determining the reference-junction temperature is 0.6 K. The measuringtime is 50 ms.     

软件接口自动化测试技术研究与实现

软件接口测试是软件系统测试的一个重要方面。文中通过雷达软件测试工作的实践,探讨研究接口测试自动化技术,设计了接口自动化测试框架和实现流程,采用灵活的XML语言作为数据交互的载体,并将该技术应用于实际的测试工作中,结果表明软件接口自动化测试技术能够有效地减少接口测试的工作量,提高测试工作的效率。     

VoIP中语音质量客观评价方法及发展

本文分析了VoIP中语音质量客观评价方法及发展,从意见模型、语音层客观评定模型和包层客观评定模型三个方面介绍了VoIP中常用的客观质量评定模型的研究发展情况,并探讨了下一代网络中语音感知质量的发展方向。     

Master Interface for On-chip Hardware Accelerator Burst Communications

We explain a systematic way of interfacing data-flow hardware accelerators (IP) for their integration in a system on chip. We abstract the communication behaviour of the data flow IP so as to provide basis for an interface generator. Then we measure the throughput obtained for different architectures of the interface mechanism by a cycle accurate bit accurate simulation of a SoC integrating a data-flow IP. We show in which configuration the optimal communication scheme can be reached.

可穿戴设备技术产业发展研究

介绍了可穿戴设备的分类,对可穿戴设备技术发展状况和产业发展趋势进行了分析,并提出了未来的应用发展方向和研究建议。