On automatic control over elevator's movements for high building by single-chip

This article introduces an automatic control system of elevator's movements for high building whose kernel control device is intel80C31 singlechip,additional outer circuit and fitting compile language program,from the respects of system request,hardware design,and software design,etc. For the hardware part,the controlling devices such as up-down movement,open-close door,approaching layer collection,motor drive,keys scanning,Hall sensor,layer position digital display,up-down call indicative circuit are all introduced.For the software part,a survey for the system program design,inside RAM distribution and functional analysis are then discussed with emphasis on the major program's logical construction following a brief and separate introduction to the subprogram's construction and function of keys scanning,layer position collection,and display.