Research On The Control Rules In City Bus Information Integrated Control System

With the development of vehicle electronic and the improvement of the society, the city bus electronic control system becomes more and more complex and it is important for the security and comfort of the bus to transmit the messages effectively.The City Bus Information Integration Control System (CBIICS) taking the city bus as the object, using in-vehicle bus as the information channel, aiming to achieve the specific control function is composed by associated ECUs to share the resources and achieve the real-time associate control among the ECUs utilizing vehicle electronic control technology, in-vehicle network technology and intelligent control technology. It intents to improve the security and comfort of the bus, lessen the lean upon the drivers. It is necessary to study the corresponding control rules for the event during the running process because the CBIICS is an event-driven system. This paper studies three kinds of control rules: integration control of the air-condition and power system, the control of breaking system when pass the crossway, the control of the station entrance.Firstly, this paper introduces the structure and. the function of CBIICS. The CBIICS constructed by CAN bus, connects the independent ECUs to transmit the messages, share the resources and achieve the associate control among the control units.Secondly, this paper proposed the control rules for the air-condition and power system when the bus running on the ramps or natural roads under the study on the rotating speed relation between the engine and the compressor of the bus air-condition,Finally, the control rules for the buses pass the crossway were established based on the study of the breaking course. The factors affecting the buses enter or leave the station were put forward.The study of this paper is the foundation of the CBIICS, it is significance to the development of the bus electronic technology.