Contrary to the problem that the process of rainy car manual manipulation causes much interference to the driver, a design method for intelligent car wiper based on the LIN bus is proposed. It adopts the chips MC9S08DZ60 and MC33661 as the controller from Freescale that dedicated to the automotive electronics field. During its working, with the rain sensor sensing the magnitude of outside rainfall, it can automatically adjust the wiper speed, achieving the intelligent wiper control.

Contrary to the problem that automobile switches have various kinds and large differences in the structure and performance so that traditional testing methods have been unable to meet the testing requirements of high performance switches, the paper designs a new detection system used to detect the functions of general auto switches which applies the developing environment LabVIEW based on virtual instrument technology and adopts the technology of embedded observe and control system. Using PC as the host computer, the system adopts the LabVIEW8.5 to compile a real-time monitoring system with good human-computer interface; S3C2440-ARM9 processor is used as the main controller of observe and control system in the inferior computer which collects output current signal when the circuit is conducted after switch is pressed. After the coding process of LwIP software protocol and the drive of Ethernet controller DM9000, the signal is transmitted to PC through Ethernet interface. Compared with conventional testing measures, this system greatly improves the real-time performance as well as working efficiency of detecting switch functions and reduces the corresponding human and material resources.