Proposal of Speed-Up Method for Pulse Type of Digital Switch and Expansion of Application Scope to Them

Abstract

In this study, we will propose a method to fasten processing time and a calibration function for the practical use of pulsed digital switches. In recent years, with the aging of the population, there is a need for a universal design that allows anyone to easily operate electrical products. To the aim, a pulse-type of digital switches have been developed that allow the switch type and number of switches to be easily changed. However, the switch has two problems that the processing time is relatively long and the response time becomes longer as the number of switches increases. Further, since the output of the negative logic sensor module is the opposite of that of positive logic module, there is a problem that ON / OFF malfunctions when the negative logic sensor module is attached. In our study, in order to solve these problems, the processing time is shortened and calibration functions are added, and their validities are verified. As a result, compared to the conventional method, the processing time is shortened from 15 [ms] to 1 [ms] in this study. All switches work correctly with a simple calibration, even if we don't know in advance whether the switches will work with positive or negative logic. Thus, we will solve the problems of the conventional method and realize an input device that is easier for users to use.