基于云平台的智能电子元器件储存柜设计

针对电子实验室内存储电子元器件因型号多所引起管理和使用困难的问题，设计出一种基于中国移动Andlink平台的智能电子元器件储存柜。此系统主要由存储柜、通信模块、传感器模块、步进电机模块和安卓APP组成。能实现通过安卓APP远程操作储存柜，根据实际需求自动推出存储柜的抽屉。存储柜内所有电子元器件的存放信息均通过安卓APP自定义，并上传保存在云平台。智能电子元器件存储柜能够让用户方便快捷地找到需要的电子元器件，实时掌握电子元器件的消耗情况。     

实验仪器柜管理系统设计与实现

传统的人工借用和归还实验仪器的方法已经不能满足开放式实验室管理的要求，因此设计了一种基于物联网的实验仪器柜管理系统。该系统采用GD32单片机为核心，锁控板和柜门锁作为执行机构，手机App为用户交互界面，实现实验仪器的自主借取及归还；采用MySQL数据库储存历史数据，实现历史记录查看；通过云服务器实现远程监控。     

基于步进电机的机车油位测量仪

采用机电结合的方法,把传统的浮子测量方式与单片机技术相结合,实现高精度、低成本、数字化的测量。步进电机是一个没有累计误差、使用方便的执行部件。系统中用浮子上的霍尔传感器来确定液面的位置,并且在与液面垂直的方向上安置一系列的霍尔传感器作为基准。利用步进电机带动丝杆上的磁铁寻找到液面,然后再找到离液面最近的基准,计数步进电机所走的步数。磁铁沿丝杆移动的距离与步进电机所走的步数成线性关系,因此可以算出基准和液面之间的距离。根据基准和这个距离计算得到机车油箱内的油位。     

基于QT和单片机的外卖柜

外卖柜取餐系统解决了外卖小哥与客户互相等待产生的时间浪费、外卖被盗等问题。采用单片机进行硬件电路设计,LCD显示屏显示信息,步进电机转动模拟外卖柜开关,密码输入确保外卖安全;利用串口通信与C++的QT框架编写的上位机程序进行交互,可以远程设置密码,控制外卖柜的开关,可以极大程度方便外卖人员和订餐用户。     

基于快餐智能配送的柜体

外卖接收柜采用数据传输模块,温度检测模块,输入输出模块,电控锁模块和温控模块等五大功能模块。它包括柜体,柜体包括控制柜和储存柜,储存柜设置有纵向和横向排列的多个单元格,外卖柜还包括用于存放外卖快餐食物储存箱、红外线传感器、lcd显示屏、wifi模块、矩阵键盘、电控锁、温度传感器、继电器、电控锁、制冷片、安装有APP的移动终端和数据库平台,储存箱设在每一单元格内,每一储存箱内没有独立控制的矩阵键盘,矩阵键盘、wifi模块均设置在控制柜内。本项目的客户群体是外卖员、餐饮商户和超市,主要用户群体是白领、学生以及高档小区的住户。通过以上五个功能模块,提高外卖配送员的效率,相应减少配送时间,确保外卖准时送达,顾客可利用安装有APP的移动终端远程控制预约加热,并可自主安排取餐时间,取餐快捷、方便,适于推广应用。采用销售、租用柜子,收取使用费和广告费等方式进行盈利,并开发了配套服务端网站对智能柜进行管理和操作,适用于各类场所,易扩展。     

基于AVR单片机的智能避障小车设计

本文介绍了以ATmega128A单片机作为主控制器,以超声波测距传感器HC-SR04为主要测距元器件,以两驱动的步进电机小车作为主体,设计出智能避障小车系统.步进电机驱动器采用L297和L298构成的混合式步进电机控制器.软件部分采用模块化程序,将距离的测量、避障算法、步进电机控制分为几个子程序,综合后实现智能车的避障功能,获得了较好的效果.     

基于机器学习算法的智能家居远程控制系统

基于机器学习算法的智能家居远程控制系统,由智能控制中心、各类传感器和远程控制App组成。智能控制中心以STM32为主控开发板,连接各种智能设备和传感器。在Windows操作系统下通过MQTT协议与App进行交互,实现设备的智能控制和智能场景切换。同时,支持学习用户的行为习惯和喜好,根据用户习惯实现个性化设置,可以通过大数据分析和智能调节实现对能源的有效利用,达到节能减排的目的。     

基于SPCE061A的步进电机控制系统设计

设计了一种利用凌阳SPCE061A单片杌和微机控制步进电机的控制系统,采用上、下位机控制步进电机的多种运行方式.程序采用模块化设计,通过PC机容易实现各功能设置.系统实现了对步进电机正反转控制以及步进电机的速度控制,并具有功能完善、运行稳定、可靠性高、高性价比等特点.     

步进电机和光电传感器实现小车寻迹

本制作以ATMEGE128单片机为控制核心,利用L298N双差分放大电路进行功率放大,从而驱动步进电机实现小车前轮转向,以及后轮直流电机转动,并通过PWM实现其速度的调节;光电传感器反馈的地面信号,实现小车精确位移控制和寻迹跟踪避障。以发光二极管和LCD1602显示小车行驶信息并当有障碍物时进行报警避障。     

基于步进电机的转台驱动系统WDM驱动程序设计

为降低转台成本及系统复杂度,采用了步进电机与光电传感器构成的驱动系统,针对该系统开发了WDM驱动程序.通过应用特定的步进电机运行控制算法,并针对WDM驱动程序的特性设计了合适的硬件控制方法,在Windows操作系统下通过驱动程序实现了对转台驱动系统进行直接控制.经实际使用,该驱动程序可以可靠地控制步进电机实现定速、定位及运行到指定传感器位置等运行方式.该驱动程序直接生成脉冲输出至步进电机驱动器,而无需外围的定时器和脉冲生成电路,具有硬件成本低、可维护性和可扩展性好、工程实用性强等特点.     

Andriod手机APP蓝牙控制智能车解决方案

在智能车遥控传统解决方案中,通常采用超再生遥控或者红外遥控的方案,而随着Andriod智能终端的普及,智能终端的短距离无线通信技术——蓝牙通信以及可以感知手机方位的方向传感器,结合单片机系统、蓝牙模块和电机驱动模块,实现基于Andriod手机APP的蓝牙控制智能车.这样每部安卓手机都成为了一部遥控器,经过多品牌和多版本手机的测试,系统都能很好地运行,同时本设计为智能机器人和智能家居提供一种新的思路.     

Improvement of color purity and electrical characteristics by co-doping method for flexible red-light organic light emitting devices

This work demonstrates the improvement of the color purity and electrical characteristics for flexible red-light organic light emitting devices (FROLEDs). The devices were prepared by vacuum deposition on ITO-plastic substrates. These guest materials of DCJTB and Rubrene were doped into the host material of Alq₃, resulting in an emitting layer. Experimental results reveal that the properties in the above case are better than those of the emitting layer with a single DCJTB guest material, reaching the commercial red-light wavelength requirement of 620 nm. Furthermore, the brightness of FROLED at the concentration ratio [3.0:7] may be two times higher because the presence of Rubrene enhances the effective transmission of energy from Alq₃ to DCJTB.     

智能开关柜底盘车/地刀控制器的设计与实现

随着中压开关柜智能化程度的不断提高,相应装置控制器的使用愈加广泛。提出了一种底盘车/地刀智能控制器的设计方法,详细介绍了电机驱动、电流检测、数码管显示以及EEPROM等电路的设计。配合电动底盘车与地刀驱动器进行了现场调试,该控制器增强了开关柜系统的安全性能,降低了操作人员的劳动强度,改善了操作环境,在智能开关柜系统中发挥了重要作用。     

基于Web的高性能智能快递柜管理系统

随着智慧园区及智能社区的发展,智能快递柜在其中发挥着重要作用。提出集机柜管理、运维人员管理、投资者管理、广告计划审核、广告计划发布于一体的Web智能快递柜管理系统。选用SSM框架,将表示层、控制层、业务逻辑层和数据持久层分离,以实现代码复用和敏捷式的开发方法,从而大大减少了开发成本,提升开发效率,提高系统的灵活性、可靠性、复用性和可维护性。采用先进缓存技术Redis,使用其订阅发布机制开发出一套适用于该系统的通信协议,广泛应用于广告管理和物料下发等功能模块。系统实际上线应用结果验证了其有效性。     

Modeling and analysis of touch on flexible ultra-thin touch sensor panels for AMOLED displays employing finite element methods

The work employs the finite element method (FEM) to model the touch on the flexible ultra-thin touch sensor panel for analyzing touch characteristics and signals. Touch sensor panel readout circuits typically depend on touch signals to determine whether the touch sensor panel is touched or not. However, the ultra-thin touch sensor panel encountered a problem which cannot correctly recognize touch points on this type of touch sensor panel (TSP) on active-matrix organic light emitting diodes (AMOLED) displays since its electrical characteristics are different from the one of the conventional TSP. The modeling techniques for the flexible ultra-thin touch sensor panel on an AMOLED display is used to analyze touch signals from the influence of the thickness of top over layer of the flexible ultra-thin TSP and to observe the variations of mutual capacitance from touch on the flexible ultra-thin TSP. When the flexible ultra-thin touch sensor panel with the thickness of the top over layer less than the threshold thickness of the top over layer is on multi-touch, the phenomenon of the ghost points are generated. The simulation to find the threshold thickness of the top over layer based on the FEM model is conducted, and the simulation results show the top layer thickness should be larger than 107 µm to eliminate the ghost points. Furthermore, a new solution that is an optimization of the electrode pattern of transmitters and receivers in the ultra-thin touch sensor panel to further minimize the threshold thickness of the top over layer of TSP without changing the physical structure of TSP is proposed. The results conducted by using this proposed solution show that TSP top over layer threshold thickness can be reduced to 65 µm without appearance of the ghost points.

     

Realization of RGB colors from top‐emitting white OLED by electron beam patterning

We demonstrate the realization of red, green, and blue colors from top‐emitting white organic light‐emitting diode (OLED) for display applications. In our approach, red, green, and blue colors are realized by microcavity‐based mode selection from the spectrum of a white OLED. For the tuning of individual microcavities, the OLED hole transport layer is patterned by an electron beam process.     

基于Android的车辆远程控制APP

针对智能驾驶的需求,设计和开发出了一款远程控制车辆的APP.该APP在设计实现时,采用XMPP的通信协议进行手机端和车载系统的通信,用页面图标形式呈现车辆的胎温胎压、车内温度、续航里程等状况,如有故障会亮红报警,嵌入高德地图API提供远程车辆定位和导航到车位置的功能,并具有远程车辆召唤,车外自动泊车、远程自动开车门等功能.该APP已与实车进行绑定测试,结果表明该APP稳定可用.     

A foldable OLED display with an in‐cell touch sensor having embedded metal‐mesh electrodes

A foldable organic light‐emitting diode display integrating a touch sensor is fabricated. The touch sensor has an in‐cell structure where metal‐mesh sensor electrodes are formed in a counter substrate. It is demonstrated that touch on the entire panel surface, including a bent portion, is detected and that the touch panel operates correctly after 100,000 folding operations with a radius of curvature of 5 mm.     

Highly efficient fluorescent blue materials and their applications for top‐emission OLEDs

We developed new fluorescent blue dopants (BDs) for achieving high‐efficient blue organic light‐emitting diode. A new BD showed both high photoluminescent quantum yield >0.9 and highly horizontal orientation (S′ > 0.9) in doped film with keeping a chemical stability by introducing suitable substituents. We developed hole transporting materials and optimized the combination of hole transporting layers to decrease a carrier accumulation at the interface between electron blocking layer and emission layer. We found that the external quantum efficiency dependency from low to high current density was turned flat by promoting hole injection into emission layer. The top‐emission organic light‐emitting diode using the new BD and the optimized device architecture exhibited high efficiency of L/J/CIEy around 200 at CIEy = 0.043.     

Polysilicon TFT technology on flexible metal foil for AMPLED displays

Abstract— A top‐emitting 230‐dpi active‐matrix polymer light‐emitting diode (AMPLED) display, having a VGA format and a 3.3‐in.‐diagonal size, on a flexible stainless‐steel‐foil substrate is reported. The active‐matrix array was fabricated with laser‐crystallized polysilicon TFTs at a maximum process temperature of 700°C. The top‐emitting PLED diodes were prepared by spin‐casting organic light‐emitting polymers. This work demonstrates the compatibility of polysilicon‐TFT technology with flexible metal‐foil substrates for active‐matrix organic light‐emitting‐diode (AMOLED) display applications.