电容式触摸传感器的性能参数比较分析

Mariusz Mścichowski, Grzegorz Bieszczad, Paweł Horbaczewski
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引用次数: 0

摘要

在本文中,介绍并比较了各种类型的触摸按钮,包括标准自电容按钮和通过附加覆盖导电层的偏转工作的金属过帽技术(MoCT)按钮。模拟了两种类型的触摸按钮。标准的自电容按钮已经使用内置CapExt软件标准电容传感器模型进行了模拟,而对于MoCT按钮,已经开发了一个专门设计的仿真模型,这使得在这种技术中制造的传感器中发生的现象的仿真成为可能。在此基础上,设计并构造了电容按钮的两种物理模型。对两个按钮的参数进行了测试,并与仿真结果进行了比较。介绍了一种专门设计和构造的工具,该工具允许以高精度和可重复性模拟触摸事件。介绍了在MoCT技术中创建的激活传感器所需的触摸力的测试结果,并将结果与经典机械按钮的参数进行了比较。研究表明,MoCT触觉传感器具有较高的抗误检能力。文章中描述的研究允许根据所需的用户参数(如按压力)和施工参数(如所需的面板厚度(强度))选择MoCT按钮的有效施工材料。利用商用软件对经验数据和模拟结果进行比较分析,可以加快此类按钮的设计过程,并在设计最终设备的过程中对模拟结果进行适当的修正。关键词:电容式触摸传感器,平行板式电容式压力传感器,电容式压力传感器,传感性能
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Comparative analysis of selected performance parameters of capacitive touch sensors
In the article, various types of touch buttons are presented and compared, including standardself-capacitance buttons and Metal over Cap Technology (MoCT) buttons which work through thedeflection of the additional covering conductive layer.Two types of touch buttons have been simulated. Standard self-capacitance buttons have been simulatedusing built-in CapExt software standard capacitive sensors models while for MoCT buttons, a speciallydesigned simulation model has been developed, which has made a simulation of phenomena occurringin the sensors manufactured in this technology possible. Furthermore, two physical models of capacitivebuttons have been designed and constructed. The parameters of both buttons have been tested andcompared with the simulated results. There is a presentation of a specifically designed and constructedtool which allows simulating a touch event with high accuracy and repeatability. Test results of thetouch force required to activate the sensor, created in the MoCT technology, are presented and theresults are compared against the parameters of classic mechanical buttons.The research has shown that MoCT touch sensors have a high resistance to false detection. Theresearch described in the article allows selecting the effective construction materials for MoCT buttons,depending on the required user parameters such as pressing force and construction parameters suchas required panel thickness (strength). A comparative analysis of the empirical data and the results ofsimulations, conducted with commercially available software, allows accelerating the design processof such buttons and introducing appropriate corrections to the simulation results in the process ofdesigning the final device.Keywords: capacitive touch sensor, parallel plate type capacitive pressure sensor, capacitive pressorsensors, sensing performance
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