SCM Automotive Air-conditioning Control Optimized Design Bench Display System

The experimental board of automobile air-condition is a multifunctional board which can be used to do testing, simulating, analyzing and inventing with the automobile air-condition and its controller. This is studied from the world famous company---Audi. The single-chip microcomputer control the LCD system is used to generate two simulative signals that one is engine rotate speed signal and the other is car speed.This article describes the utility of the experimental board of automobile air-condition. Describe the circuitry design precept and the software flow in details. The employment of two1-row16-bit LCD displays and the rotate-decoder keyboard input makes it easy to adjust parameters.According to the technology difficulties of the single-chip microcomputer control the LCD system in the system design and debugging. This paper also give the solution.