Multi-Software Joint Simulation System of Readout Approach for Resistive Sensor Array

因易于实现和较高的空间分辨率,阻性传感器阵列(RSA)被广泛应用于电子皮肤中。RSA的性能不仅依赖于其制备技术,也与其测试方法性能紧密关联。良好的RSA测试方法应具有测量误差小、读出速率高和电路复杂度低等特点。为了快速评估RSA测试方法的性能,设计了由Lab VIEW、MATLAB、Multisim混合编程实现的联合仿真系统,3个软件分别负责联合仿真系统的控制及显示、数据的处理和测试电路的搭建及电路仿真。首先,描述了联合仿真系统的框架和功能。其次,介绍了RMA(Resistance Matrix Approach)的原理并提出IRMA(Improved RMA),而后利用联合仿真系统仿真了这两种方法。最后,搭建4&times;4阻性阵列实物系统验证仿真结果。结果表明,该系统能够有效正确地评估RSA测试方法的基本性能,且IRMA的测量精度和阻值量程优于RMA。</p

Multi-Software Joint Simulation System of Readout Approach for Resistive Sensor Array

因易于实现和较高的空间分辨率,阻性传感器阵列(RSA)被广泛应用于电子皮肤中。RSA的性能不仅依赖于其制备技术,也与其测试方法性能紧密关联。良好的RSA测试方法应具有测量误差小、读出速率高和电路复杂度低等特点。为了快速评估RSA测试方法的性能,设计了由Lab VIEW、MATLAB、Multisim混合编程实现的联合仿真系统,3个软件分别负责联合仿真系统的控制及显示、数据的处理和测试电路的搭建及电路仿真。首先,描述了联合仿真系统的框架和功能。其次,介绍了RMA(Resistance Matrix Approach)的原理并提出IRMA(Improved RMA),而后利用联合仿真系统仿真了这两种方法。最后,搭建4&times;4阻性阵列实物系统验证仿真结果。结果表明,该系统能够有效正确地评估RSA测试方法的基本性能,且IRMA的测量精度和阻值量程优于RMA。</p

Fabrication and Evaluation of a Stretchable Thermal Sensing Cushion With Multi-Arch Structure

Stretchable and flexible sensing arrays can facilitate human-computer interaction and biofeedback, such as robots, medical devices, and human-computer interface devices. To meet the demand on perceiving the temperature distributions on varied surface areas with low cost, in this paper, we designed a stretchable and flexible thermal sensing cushion (SFTSC) based on the two-dimensional thermistor array with multi-arch structure. The 8x8 negative temperature coefficient resistors each with two pins were used as the thermistors. For good stretchability, every conductive textile electrode (CTE) in the SFTSC was fabricated by folding a conductive textile strip with multi-arch structure in an insulated elastic textile substrate. For decreasing the number of the test wires, all thermistors in the SFTSC were arrayed in the shared row-column fashion by inserting two pins of every thermistor into its row CTE and its column CTE, respectively. The performances of the SFTSC were evaluated by temperature sensing experiments of a cup, human hand and sitting posture, and the experimental results showed that the SFTSC with good flexibility and good stretchability could perceive its surface temperature well even its surface area was stretched larger 2.25 times

某体育场钢屋盖功能改造加固设计与施工模拟分析

以某奥体中心体育场钢结构屋盖为研究对象，对其加固及施工方案进行了分析。首先进行模型反建，并对该屋盖在施加新增荷载后的内力及变形进行分析，明确了需要加固的杆件范围。在此基础上，采用有限元软件对结构开展精细化分析，确定了包含加强节点、杆件和结构的加固方案，有效地改善了结构的传力体系，提高了结构的承载能力并降低了结构在使用荷载下的应力和变形。针对钢屋盖的不同部位，分别通过预应力锚索、增大截面和设置刚性圆管等方式进行加固，保证结构安全且满足建筑要求。除此之外，还对该加固方案对应的施工过程进行了有限元模拟，可为实际施工提供参考。经省运会工程实践验证，本项目的加固方法简单有效

某体育场钢屋盖功能改造加固设计与施工模拟分析

以某奥体中心体育场钢结构屋盖为研究对象，对其加固及施工方案进行了分析。首先进行模型反建，并对该屋盖在功能改造后新增荷载的内力及变形进行了分析，明确了其需要加固的杆件范围。在此基础上，采用有限元软件对结构展开了精细化分析，确定了包含加强节点、杆件和结构的加固方案，有效地改善了结构的传力体系、提高了结构的承载能力并降低了结构在使用荷载下的应力和变形。针对不同部位分别采用了预应力锚索、增大截面和设置刚性圆管等方式加固钢屋盖，保证结构安全性且满足建筑要求。除此之外，还对该加固方案对应的施工过程进行了有限元模拟，为其施工提供参考。经省运会工程实践表明，本项目的加固方法简单有效