视触觉融合感知的点阵刺激装置设计

Visual-Tactile Dot-Matrix Stimulator for Psychological Experiments

探究人的多通道融合感知特性是物理心理学重要研究方向,本文创新设计了一种视觉和触觉融合感知的点阵刺激装置,可作为物理心理学的实验研究设备.此装置包括上位机控制平台,下位机控制模块,视觉点阵刺激模块、触觉点阵刺激模块等.上位机控制平台发出视触觉刺激的控制指令,下位机控制模块执行控制指令.视觉点阵刺激模块提供视觉感知,由19行12列的228盏LED灯阵列组成,最小封装尺寸为1.0×0.5 mm,能够提供10个等级的明亮灰度值(7.6–75.8 lux),最高刷新频率为85 Hz,可选用红,白,黄,绿4种颜色.触觉点阵刺激模块提供触觉感知,由6行4列的24个触点阵列组成,触点直径为1.5 mm,凸起高度为0.40±0.05 mm,最大刷新频率为10 Hz,触点凸起后处于自锁位置,能够承受约10 N的按压力.测试结果表明,此装置可以独立或混合控制视觉点阵和触觉点阵中任意LED灯和触点工作,输出视觉刺激和触觉刺激,体积小(长70 mm、宽66 mm、高80 mm),重量轻(337 g),在15 m半径范围内可以遥操作,能为物理心理学研究人的视触觉融合感知特性提供定量化的实验数据.

Exploring human multi-channels perceptional characteristics is an important research field in physical psychology.This study innovatively designed a visual-tactile dot-matrix stimulator,as an experimental device for physical psychologist to analyze human perception.The device includes a host control platform,a sub-control module,a visual dot-matrix display module,a tactile dot-matrix display module,etc.The host control platform produces the visual-tactile instructions,and the sub-control module executes these instructions.The visual dot-matrix display module provides visual perception.It consists of 19 rows and 12 columns of 228 inch LED lamp arrays with 85 Hz refresh rate and 10 gray-value grades(7.6–75.8 lux).And the minimum package size of an LED lamp is 1.0×0.5 mm with alternative colors of red,white,yellow,and green.The tactile dot-matrix display module provides haptic perception by 6 rows of 4 columns of 24 contact arrays.Each contact has 1.5 mm diameter with 0.40±0.05 mm bump height and 10 Hz refresh rate.In the selflocking position case,the contact can endure 10 N force.The experimental results show that this stimulator can independently or combined control any LED lamps and contacts to provide the visual-tactile stimuli.This function shall satisfy for physical psychologist to acquire quantitative experimental data for analyzing human perception.This stimulator also has compact(70×66×80 mm volume),light(337 g),and mobile(15 m work distance)advantages.