Vehicle test environment information collection system in altitude environment

Abstract

The invention discloses a vehicle test environment information collection system in an altitude environment, and relates to the field of automotive test equipment. An analog signal acquisition module and a temperature acquisition module are connected with a corresponding sensor in a test environment information measuring unit, the temperature acquisition module is further connected with a corresponding sensor in a vehicle information measuring unit, and vehicle information and test environment information are acquired to achieve measurement of an analog signal and a temperature signal; a wireless data receiving module is connected with a corresponding sensor in a wheel state measuring unit, and tyre pressure and tyre temperature data are acquired; a GPS information measuring unit acquires information of latitude and longitude, vehicles, vehicle acceleration and altitude; and the acquired data are all converted to CAN data packets, and the CAN data packets are transmitted to a mainframe computer through a CAN bus and a USB to CAN communication module. According to the vehicle test environment information collection system in the altitude environment, the number of needed instruments is reduced, operating processes of the instruments are simplified, and operation errors are reduced.

Description

Technical field [0001] The invention relates to the field of automobile test testing equipment, in particular to a vehicle test environment information acquisition system in an altitude environment. Background technique [0002] When vehicles are subjected to various road tests and chassis dynamometer tests in an altitude environment, the environmental information of the test site (for example: wind speed, air pressure, temperature, humidity, altitude and air density), water temperature and oil temperature information of the automobile engine, and automobile Wheel pressure and temperature information will have a greater impact on the resistance, fuel consumption and emissions of the car during driving. Therefore, it is very important to accurately measure the above-mentioned information when conducting vehicle tests in an altitude environment. [0003] In the actual test, in order to be able to measure the above-mentioned test information, it is usually necessary for the tester to...

AI Technical Summary

Problems solved by technology

[0005] 1) During the test, the operation of various instruments has caused a great burden to the test personnel, the error rate is high, and the test data records after the test are scattered, which is troublesome to deal with;

[0006] 2) Because some equipment does not have the function of saving, the test data can only be recorded manually, resulting in low sampling rate and small amount of data, thus reducing the accuracy of the test data and forming a certain error compared with the actual situation

For some information that is not easy to measure directly (such as altitude and air density), the measuring instruments currently on the market have the disadvantages of poor accuracy or large volume, which makes it difficult to use in automobile tests

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