Abstract
In recent years, with the number of private cars increased dramatically and the increasing road congestion, more and more people select a city bus travel as their means of transport. Urban public transport in urban traffic in China plays an important role. And it also is the system that is closely related to China's urban residents with the production, life and other activities. The quality of the air-conditioning system is directly related to the passengers at the time of ride comfort. With the development of the domestic passenger car industry, the requirements for the air-conditioning systems increase. Single-chip bus electronic control technology in the increasingly wide range of applications, it significantly increased the level of intelligent control of passenger vehicles and safety performance. However, most of the current passenger car air-conditioning is pre-conventional car with air conditioning, and is not suitable for development of automotive industry. And the overhead of the controller design will be cost-effective single-chip PIC, the use of embedded intelligent control and communication bus technology, at the same time have the stepless speed change, replaced the wind and other functions, to ensure that the outside world in a variety of climate and conditions so that passengers are in a comfortable air environment, to enable the driver to maintain a clear field of vision, in order to provide the basic guarantee for safe driving.
Keywords：PIC; Bus-technology; Air-conditioning
