基于特征波的虚拟现实触感鞋垫的研制

Development of virtual reality tactile insolebased on characteristic wave

为了解决市场上缺少足部触感仿真设备以及虚拟现实设备在元宇宙社会中的交互不足等问题,通过采用特征电流波形产生微电流模拟环境触感的技术,研发了一款基于特征电流波的触感模拟鞋垫。该触感模拟鞋垫设备可以通过蓝牙连接,让使用者的脚部感受到虚拟场景中不同的地形触感,达到增强使用者在虚拟世界中沉浸感的目的。特征波根据虚拟场景地形的软硬程度来模拟脚部触觉,即当虚拟场景地形越柔软,则特征波在单位时间内频率越低,波峰越平缓;反之,则波峰越尖锐。双盲对比实验结果显示,该设备通过微电流对足部进行刺激可以让使用者产生一定触觉反馈,而根据地形特征改变输入电流波的频率、波峰、波谷,所产生的刺激频率也随之改变,最终使得使用者对于不同地形的足部触觉反馈也不同。

In order to solve the problems such as the lack of foot touch simulation equipment in the market and the insufficient interaction of virtual reality equipment in the meta⁃universe society,a touch simulation insole based on characteristic current wave is developed by means of the technology of micro current simulation environment touch sensation generated by characteristic current waveform.The tactile simulation insole device can be connected through Bluetooth,so that the user′s feet can feel the touch of different terrain in the virtual scene,so as to enhance the user′s immersion in the virtual world.Characteristic wave is used to simulate foot touch sensation according to the degree of softness and hardness of virtual scene terrain,that is,the softer the virtual scene terrain is,the lower the frequency of characteristic wave becomes in a unit time,and the gentler the wave crest is.On the contrary,the wave crest is sharper.The results of the double⁃blind comparison experiment show that the device can stimulate the foot by micro⁃current to generate certain tactile feedback for users,the frequency,wave crest and wave trough of the input current wave will be changed according to the terrain characteristics,and the stimulation frequency will also be changed accordingly,which finally makes the users have different tactile feedback to the different terrain.