摘要：针对工业领域低浓度挥发性有机化合物连续检测问题,设计了一种带有三维叉指状传感电极的光离子化传感器。叉指状电极与传统的电极相比具有更高的表面体积比,能够更好地捕获电离产生的离子和电子,从而进一步提升光离子化传感器的灵敏度,降低最低检测限。构建了传感器的测试与标定系统,采用标准异丁烯气体测试该传感器的性能,实验结果表明:在相同硬件条件下,三维叉指状结构比传统电极结构灵敏度更高,线性度和稳定性良好,为低浓度挥发性有机化合物的测量提供了可靠的解决方案。

摘要：随着人工智能技术的不断发展,目标检测和目标追踪等技术在许多领域得到了广泛应用。其中,人流密度监控是校园安全管理等领域中的一个重要应用。文章设计并实现了一套基于YOLOv5算法的校园公共空间人流密度识别与监测系统,以提升校园安全管理的效率和准确性。系统采用Pyside6图形界面框架,并利用Qt Designer工具精心设计用户友好的可视化操作界面。通过对特定场景数据集的深度优化和训练,系统灵活调整监测路径,以适应复杂环境和遮挡情况,精准测算校园公共空间的人流密度。试验结果表明,该监测系统有助于校园管理人员及时发现异常情况,最大限度地防范相关风险,提高校园安全管理水平。

摘要：In order to guarantee safety and stability during physical human-robot-interaction(p HRI) in the occasion of service or industrial operation, a serial integrated rotary joint with the characteristics of passive and active compliance is proposed. Passive compliance is achieved by a designed elastic element, such that the compliant joint may minimize large force which occurs during accidental impacts and, further, may offer more accurate and stable force control and a capacity for energy storage. Meanwhile, the modeling of the compliant joint is comprehensively analyzed, including the effect of the motor model on the overall control system. In order to realize the active compliance, a new method of impedance control is proposed. On the basis of PD control, a more compliant impedance controller is introduced. Experimental results show that the serial integrated rotary joint can provide more effective safety compliance during physical interaction, which has also been well applied in our designed massage robot and rehabilitation robot.

摘要：针对永磁同步电机中齿槽转矩的建模困难且参数耦合等缺陷,提出一种基于迭代式数据库的齿槽转矩匹配追踪与补偿方法。基于齿槽转矩的物理特性,构建以特征频率为分解参数的时频特性字典库。通过设计一种迭代式数据库,建立自适应更新淘汰机制来逐一匹配字典库中的最佳原子;实时映射数据库中的转矩电流到最佳原子,从而获得模型参数;通过构建前馈补偿组件,在仿真平台上验证了齿槽转矩的在线抑制效果。

摘要：物流仿真技术是当前对电池模组生产线进行生产工艺规划、瓶颈分析的常用手段。首先,基于Plant Simulation仿真工具,对某一品牌汽车电池模组生产线搭建物流系统仿真模型。其次,根据仿真结果对生产线的设备开通率、生产线的瓶颈及生产线的设备利用率和产线容量进行分析,对工艺设计提供理论依据。

摘要：To deal with the stress interference caused by simultaneous propagation of multiple fractures and the wettability reversal and physical property changes of the reservoir caused by fracturing fluid getting in during large-volume fracturing of tight oil reservoirs through a horizontal well, a non-planar 3D fracture growth model was built, wettability reversal characterizing parameters and change of relative permeability curve were introduced to correct the production prediction model of fractured horizontal well, a fracturing design optimization software(Fr Smart) by integrating geological and engineering data was developed, and a fracturing design optimization approach for tight oil reservoirs based on fracture control was worked out. The adaptability of the method was analyzed and the fracture parameters of horizontal wells in tight oil reservoirs were optimized. The simulation results show that fracturing technology based on fracture control is suitable for tight oil reservoirs, and by optimizing fracture parameters, this technology makes it possible to produce the maximum amount of reserves in the well-controlled unit of unconventional reservoirs. The key points of fracturing design optimization based on fracture control include increasing lateral length of and reducing the row spacing between horizontal wells, increasing perforation clusters in one stage to decrease the spacing of neighboring fractures, and also avoiding interference of old and new fracturing wells. Field tests show that this technology can increase single well production and ultimate recovery. Using this technology in developing unconventional resources such as tight oil reservoirs in China will enhance the economics significantly.

摘要：本文对数字媒体艺术在广告创作中的创新策略进行了分析,它以特有的虚拟性、交互性、普适性和多样性的特点,使影视广告设计在表达方式上得到了极大的提升,同时也大大提高了其视觉效果和互动性。与此同时,利用大数据、人工智能等技术,使其能够进行精确地投放,并实现个性化的设计。同时,通过跨领域的协作,将不同的文化因素融入广告的创作中,使其具有更强的感染力和品牌效应。不仅给整个广告业带来了生机,而且对广告设计的革新和发展也起到了一定的促进作用。

摘要：草莓滑刃线虫(Aphelenchoides fragariae)是一种叶和芽寄生线虫,可侵染250多种植物,被列入我国检疫性有害生物名录。本研究通过比较GenBank数据库中滑刃属线虫相关序列,以草莓滑刃线虫rDNA-ITS序列为靶标,设计草莓滑刃线虫LAMP特异性引物,建立了可视化LAMP反应检测体系,并采用目标线虫及近似种线虫DNA进行引物特异性验证。结果表明,本研究建立的LAMP检测方法可在1 h内对草莓滑刃线虫进行检测,供试其他22种植物线虫均未发生非特异性扩增,仅草莓滑刃线虫出现扩增,具有良好的物种特异性;检测灵敏度可达1/250条草莓滑刃线虫;检测结果可以直接用肉眼判断。因此,本方法具有反应时间短、灵敏度高、设备要求低的优点,适于基层实验室开展草莓滑刃线虫检测。

摘要：随着传统广告注意度和信任度的下降,以及政府管理部门对广告播出时间以及内容进行规范,传统广告业的发展萎缩;而新媒体广告迅速发展,作为影视植入式广告具有隐蔽性、强制接受性、真实性等特征,更强调广告的艺术性诉求,弱化商业诉求。本文主要研究影视植入式广告表现形式、优点以及存在的问题,并提出解决的对策。

摘要：通过了解草木染技艺发展困境,剖析高校艺术设计教育人才培养同质化原因及与行业需求差距事实,指出探索草木染技艺在高校艺术设计教育的创新性发展重要意义,通过创立草木染手作实验工坊,依托文化创意产品设计大赛进行文创产品及包装设计实践,实现草木染技艺的创造性转化与创新性发展。