The design of new-pattern Taximeter control circuit
Abstract: This paper introduces program of designing the new-pattern Taximeter control circuit. It demands to have three digits mileages to show, and can be precise to 1 kilometer; The mileage is 5 kilometers to need to set up starting, starting fare is 10 yuan; It can set up price of each kilometer, charge for an increase of a kilometer of expenses when waiting every ten minutes; it can be replace to the zero clearing ; drive charge stops while waiting, waiting charge stops while driving. Its digital system adopts the top-down level design method, describe with VHDL hardware language to realize, adopt MAX-PLUSⅡ to simulate the logic function, and realizing the function after finishing loading on ISP chip. Digital system part adopts In-system programmable technology (ISP technology ) design program, and peripheral circuit design including the power circuit, pulse circuit. After assembling and testing, the result fulfils requirements. Presently the taximeter control circuit succeed by single slices of organization mainly, this program adopts In-system programming technology to realize, its mean of realization is advanced, and it is superior.
Keywords: In-system Programmable Technology, New-pattern Taximeter, Very High-Speed Integrated Circuit hardware Description Language
