Study On Automobile Measurement And Analysis System

With the development of automobile industry and the drastic competition of market, many automobile manufacturers have been carrying out a lot of experiments and study continually in order to enhance the quality of production and invent the new production. So more and more automobile experiment instruments are required. But,in the field of modern vehicle performance test , traditional measuring system can not meet the need of modern test because of its inheernt shortcomings.At the same time,with the development of computer hardware and software, virtual instrument has become the developing tendency of measurement field. In this paper, aiming at the shortocming of test sysetm used in our country ,the use of the advantage of virtual instrument are made to develop the test system of automobile.Firstly,the paper analyzes the situation and development of vehicle capability test system home and aborad the actual application states and foreground of the virtual instrument technology in brief.Based on virtual instrument technology, the automobile measurement system,such as dynamic performance and fuel economy, is set up to improve the current testing methods whose results are not humanization. The system which is developed with LabVIEW and consists of notebook pc, sensors, sample-and-hold accessory and data acquisition card, can valuate the automobile dynamic performance , fuel economy, smoothness and so on, including the display of velocity, acceleration, distance, fuel consumption per 100km and curve of data.The feasibility and practicability was proved by experiments and error analysis on this system. The results show that the system has a stable and repeatable performance, can reflect the test data exactly.