Research of tire pressure collection system based on MSP430F149

XIE Weidong, LI Renqing, LIU Zhenhua

(Institute of Vehicle Engineering, Zhejiang University of Technology, Hangzhou 310014, China)

Abstract: Aiming at the requirement of tire pressure data collecting and preserving in the road test of vehicle or the tire test bench, a kind of tire pressure collection system was designed. The ultra low power MCU MSP430F149 was used as the core micro unit, the integrated pressure sensor YSC01 was adopted to measure the tire pressure in system, and the large capacity memory and low power AT24C512C was chosen for saving tire pressure data collected in the experiment, then the tire pressure data stored in the memory chip was transmitted to the PC through the USB communication interface; The low power consumption feature of MSP439F149 was made full use of to lower system powerconsumption in software design, research and calculation of system powerconsumption in theory was made. Finally, experiments were carried out. The results indicate that the error between system sampling value and setting standard value is within 3kPa, system can accurately collect the tire pressure data, the feasibility of the design scheme is verified. The system has the characteristics of simple electronic circuit, low power consumption, stable performance and large data storage capacity, which can be applied to the collection and storage of tire pressure transient data in experiment.

Key words: MSP430F149; tire pressure; low power consumption; collection system