用于盲人数字化阅读的指套式全锁止盲文显示装置OACSTPCD

The problem of reading accessibility for blind people has not been well solved due to the visual im-pairment and lack of social attention.In view of he problems of low locking force and high energy consumption of existing Braille display devices,a fingertip-type fully locked Braille display device is developed for blind people's digital reading,and it is simulated and optimized through theoretical derivation and finite element a-nalysis.The Braille dot actuator of this device relies on the crossbeam structure for full locking,which can pro-vide sufficient feedback force for the users and improve the accuracy of Braille dot recognition and reading effi-ciency.The performance test results show that the average upper spring force of the Braille dot actuator is 101.67 mN,the locking force is more than 5 N,and the average refresh frequency is 17.7 Hz,which meets the de-sign requirements.The experimental results show that the average accuracy of Braille dots recognition is 94%,and the subjective evaluation is high.It can be seen that the device can improve the level of blind people's digital reading,and provide a good way for the blind people to read digital text portable.