基于SenchaTouch的移动书店设计与实现

为满足移动客户随时随地选购图书的需要,采用MobileApp移动框架SenchaTouch技术,设计开发一个移动书店。介绍网上书店的需求分析、关键技术和详细实现过程。经过测试表明,基于SenchaTouch的移动web应用具有良好的跨平台能力,能满足多种应用需求。     

一种具备总控功能的群控开关设计

利用SNP2522单片机设计四路具备总控功能的群控开关,它包括触摸开关和多个与被控电器连接的开关电路组成。设计中采用光通管驱动电路获取控制输入信号,通过单片机软件设计实现单路、多路和总控功能,单片机控制输出通过双向可控硅构成的无极控制电路完成相关强电电路的控制。所设计的产品通过广东省质量监督局检验合格。     

台达DOP触摸屏在电力系统中的应用

本文介绍台达触摸屏在某电力系统整流逆变电源控制系统中的应用。在此项目中,采用台达HMI的宏指令将西门子S7-200PLC、漏电巡检仪、电池巡检仪、上位机与DOP触摸屏集成在一个应用系统中,它们通过串行通讯可共享数据。     

A monolithically integrated surface micromachined touch mode capacitive pressure sensor

A monolithically integrated surface micromachined touch mode capacitive pressure sensor and its interface circuits are presented. The device includes the capacitance to voltage, and capacitance to frequency converters on the same chip. The sensor is fabricated using a surface micromachining technology, which is processed simultaneously with a conventional 2.0-μm double-poly, double-metal n-well CMOS process. The performance of the integrated sensor meets the design specifications of good linearity and good stability. Evaluation results on the completed ‘sensor and circuit' chip are presented.     

图书馆可视化触摸屏导读与查询系统的设计与开发

论文结合图书馆在信息化过程中所遇到的具体问题和需求,总结了我校在研制开发图书馆触摸屏导读与查询系统及成功应用的经验,介绍了该系统的整体架构设计和主要功能模块设计,为要制作触摸屏多媒体导读系统工作的图书馆提供参考。目前本系统的分析、设计、实现和测试己基本完毕,运行效果良好。     

基于Modbus TCP／IP协议的GE—PLC与触摸屏通信的应用

本文介绍了基于Modbus TCP／IP通信协议的GE—PLC与触摸屏G310C的数据通信应用实例及其主要设置。为PLC与触摸屏的远距离数据传输提供了一种简单而可靠的通信方式。     

SGR-3型乳化炸药生产线自动控制系统浅谈

根据SGR-3型乳化炸药连续生产线的工艺要求,采用研祥公司的工业控制计算机、亚控公司的组态王、海泰克公司的触摸屏和三菱公司的FX2N-128MR可编程序控制器,对生产过程中的原材料制备、重量、流量、温度、压力、电流以及各设备电机的启动和停止进行控制,并对生产过程中各流量、温度、压力、电流、断水、过载、故障等参数进行报警、停机设置,以便安全生产。     

Tactile–optical probes for three-dimensional microparts

The dimensional measurement of microsystem components is a field of application that is gaining more and more importance. While optical probing systems offer a number of advantages, their performance is strongly affected by the varying optical properties of the measured surfaces. For this reason, tactile probing systems are essential to many fields of micrometrology. Since conventional tactile probing systems are not suitable for the measurement of microparts, there is a demand for new tactile probing systems that are specifically adapted to the requirements of micrometrology. The tactile–optical Werth Fiber Probe is an established solution within this scope of application. In the present paper, two recent approaches to adding full 3D capabilities to the fiber probe principle are proposed. First prototypes of these sensors are shown and the obtained results are discussed.     

Standing at a kiosk: Effects of key size and spacing on touch screen numeric keypad performance and user preference

Touch screen input keys compete with other information for limited screen space. The present study estimated the smallest key size that would not degrade performance or user satisfaction. Twenty participants used finger touches to enter one, four or 10 digits in a numeric keypad displayed on a capacitive touch screen, while standing in front of a touch screen kiosk. Key size (10, 15, 20, 25 mm square) and edge-to-edge key spacing (1, 3 mm) were factorially combined. Performance was evaluated with response time and errors, and user preferences were obtained. Spacing had no measurable effects. Entry times were longer and errors were higher for smaller key sizes, but no significant differences were found between key sizes of 20 and 25 mm. Participants also preferred 20 mm keys to smaller keys, and they were indifferent between 20 and 25 mm keys. Therefore, a key size of 20 mm was found to be sufficiently large for land-on key entry.     

Development of a touch probe based on five-dimensional force/torque transducer for coordinate measuring machine (CMM)

Systematic errors due to the pre-travel variation and the probe tip shape are irreducible to the traditional touch trigger probing systems. This paper describes the development of a probing system based on five-dimensional force/torque transducer for coordinate measuring machines. The compensation for pre-travel variation is accomplished through the five-dimensional force/torque information acquired by the integrated transducer and the stiffness matrix of the stylus. From the relationship between the obtained force/torque information and the geometrical shape equation, coordinates of the exact contact point immune from the contact error are acquired. After calibration, the combined measurement uncertainty is estimated to be less than ±0.3 μm.