Open-source hardware- and software-based cryomicroscopy system for investigation of phase transitions in cryobiological research

The development of inexpensive equipment adapted for the study of a specific biological object is very important for cryobiology. In the presented work, we have proposed a simple system for microscopy utilising open-source platform Arduino. Testing this system showed that it had sufficient sensitivity to determine the physical processes occurring in a cryopreserved sample such as intra- and extracellular water crystallisation and salt eutectic. Utilising this system, we investigated the mechanisms of cryoprotection and cryodamage of testis interstitial cells (ICs) in cryoprotective media, which included cryoprotective agents such as dimethyl sulphoxide (Me₂SO), as well as foetal bovine serum or polymers (dextran, hydroxyethyl starch and polyethylene glycol). It was shown that a serum-/xeno-free medium that included 0.7 M Me₂SO and 100 mg/mL dextran was able to reduce intracellular water crystallisation in cells, change the structure of extracellular ice, and reduce salt eutectic and recrystallisation. All these effects correlated with better IC survival after cryopreservation in the medium. This medium is potentially less toxic as it has lower concentrations of Me₂SO compared to serum-containing media developed for cryopreservation of testicular cells. This would pave a way for the creation of nontoxic serum-free compositions that does not require removal before use of cryopreserved living cells for laboratory practice or in clinics.     

Arduino平台在机械手臂控制系统中的应用

为了提高机械手臂的可控程度,设计了应用Arduino平台的六自由度机械手臂可控系统,分别介绍了硬件系统和软件系统。测试结果表明该设计在实验室环境下可正常工作。     

Design and development of smart electricity meter – the path towards sustainable globe

Reducing energy demand in the domestic segment is an important problem worldwide. This study focused on the awareness of residents on energy conservation and on the potential of reducing energy demand through energy-saving activities. The following observations were noted down during the experiment of smart meter in 10 houses of Mumbai city. (1) Its installation led to a reduction in power consumption, (2) a change in energy-saving behaviours of the household members such as the reduction of standby power and a better control of appliance operation, and (3) energy-conservation awareness affected not only the power consumption of the appliances explicitly shown on the display monitor but also other household appliances. (4) Development of sustainable environmental system.     

基于Arduino 的智能小车的控制系统设计

为进一步提高智能小车的性能,设计一种基于 Arduino 的智能小车的控制系统.该系统硬件部分由 6 个模块组成,并对各模块的核心控制板和关键模块进行对比和选择;软件部分采用手机端的应用程序进行控制,实现了人体感知、自主避障和人机交互等功能.分析结果表明:该系统开发成本低、易于推广、适用于教育、家庭等多种场合.     

Realisation of incremental conductance the MPPT algorithm for a solar photovoltaic system

This paper presents the modelling, simulation and hardware implementation of the incremental conductance (INC) maximum power point tracking (MPPT) algorithm. The extraction of maximum power from the solar photovoltaic system was made by integrating the PV module with a DC–DC converter and utilising the MPPT algorithm. In this work, the INC MPPT algorithm is practically implemented on an Arduino Uno board to track the maximum power point (MPP) and also simulated in Matlab/Simulink under the same environmental conditions. The performance of the INC algorithm was also compared with the conventional Perturb and Observe (P&O) MPPT algorithm. The experimental and simulation results are provided for both MPPT techniques. Matlab/Simulink was used for simulation studies.     

微信和无线网络在工业领域的应用与WEB服务的集成

微信是中国目前主流的社交网络平台，类似的社交网络平台也正在向综合无线应用平台发展，社交化平台成为下一代工业控制和传感器平台正在变为现实。无线网络是未来工业网络的关键价值所在，目前工业网络的概念存在误区。作者认为工业无线网络本身是一种过时的认识，应该用无线网络在工业中的应用来取代现有的名词。以通用的网络模型取代现有的工业专用协议，同时发展相关的Web服务，并使之成为一个新型的应用框架开放给社会。     

基于微信的智能宿舍系统设计与实现

为解决宿舍设施的消防安全隐患,监测实时宿舍温湿度的需求,设计了基于微信的智能宿舍控制系统.该系统主要以Arduino核心板、新浪云平台、烟雾传感器、温湿度传感器、WiFi模块和手机微信客户端组成.实时监控宿舍烟雾浓度和可燃物浓度,监测宿舍环境的温度、湿度,并采集传感器数据,通过微信客户端显示.     

基于Arduino的液晶声光万年历的设计与实现

针对Arduino平台日益广泛的应用,设计了液晶声光万年历系统.系统采用Arduino UNO R3作为主控板,采用1602液晶屏模块作为数值显示部分,采用DS3231模块提供时间、日期和温度数据,采用蜂鸣器和RGB LED发光管为闹钟和整点提示发出声光信号.通过系统软硬件功能验证和性能测试,设计的液晶声光万年历具备了时间、日期、星期和温度显示,以及声光闹钟和整点提示等实用功能,每周计时误差小于1秒.系统可以作为Arduino教学的典型项目应用于教学实践,也可以作为一个具有实用性的计时产品投入使用.     

基于开源硬件的TR组件原位检测设备设计

基于相控阵雷达TR组件原位快速检测的需求,介绍了一种能快速实现的外场原位检测设备研制方法。通过分析被测对象的工作原理和输入输出接口,介绍了检测设备的测试功能,给出了如何利用开源模块来实现专用测试设备的设计方案、系统框图和软件流程图。实际测试表明：该检测设备能够满足TR组件的原位检测要求,具有便携、故障定位准确、开发周期短等优点。     

基于多传感器的智能小车避障系统设计

针对智能小车存在的避障缺陷,设计了一种超声波单点避障与红外双路交叉避障相结合的全方位避障系统,系统以Arduino为主控单元,以Linux为开发平台,通过多传感器数据的采集融合、经由计算机算法控制,可实现全方位自动避障.系统硬件采用多模块协调配合,可使系统具有较高的自适应能力.实验结果表明,设计的全方位避障系统较大地提高了避障的效率和成功率,可有效地实现全方位避障.