Testing system for integral vehicle running station

A motion state, measurement system technology, applied in measurement devices, vehicle testing, mapping and navigation, etc., can solve problems such as large measurement errors, poor test repeatability, and inability to use on wet roads, and improve reliability and robustness. , the effect of reducing complexity and good fault-tolerant performance

Inactive Publication Date: 2006-11-29
JILIN UNIV
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Problems solved by technology

In the domestic field tests of real vehicles in the 1950s and 1960s, the residual trace method was usually used to measure the vehicle trajectory, but it had the disadvantages of long residual measurement time, difficulty in judging multiple test tracks, and inability to use on wet roads.
Finally, the method of testing the trajectory of the center of gravity of the vehicle is adopted, that is, the angular displacement (or angu...

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  • Testing system for integral vehicle running station
  • Testing system for integral vehicle running station
  • Testing system for integral vehicle running station

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Embodiment Construction

[0039] The specific content and implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0040] The complete automobile motion state measuring system that the present invention proposes is to realize according to the following steps:

[0041] 1. GPS raw data coordinate system transformation:

[0042] refer to figure 2 : There are mainly two coordinate systems involved in GPS measurement: the earth-centered and ground-fixed coordinate system (e system) and the local horizontal coordinate system (n system), etc., see the relationship between them figure 2 (λ,  are the latitude and longitude of the origin of the n-system coordinates). The original data collected by GPS is the space Cartesian coordinates under the earth-centered earth-fixed coordinate system of WGS-84 coordinate system, that is, the X, Y, Z coordinates of the phase center of the GPS antenna. Coordinate transformation is through the earth-centere...

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Abstract

The invention relates to an automobile movement state measuring system for automobile movement safety evaluation field test, providing a complete automobile movement state measuring system based on RTKDGPS and high accuracy IMU for automobile performance field test, and the system comprises high accuracy GPS receiver, high accuracy inertia measuring unit (IMU), embedded special processing system and corresponding interfaces, where the original data collected by the high accuracy GPS receiver and IMU are together transmitted through the respective interfaces into the embedded special processing system, and the embedded special processing system runs GPS data coordinate transform, preprocessing module, inertia navigating system (INS) algorithm module, improved Kalman filter fusion algorithm software and real-timely records and displays and supplies high accuracy automobile movement states including acceleration, angular speed, automobile speed, displacement, and posture through interface to upper computer.

Description

technical field [0001] The invention relates to an automobile movement state measurement system used for field tests of automobile movement safety performance evaluation. Background technique [0002] Automobile test is an extremely important method to help us understand the nature and laws of various phenomena in actual use of automobiles, discuss and solve existing problems, verify the effect and degree of problem solving, and promote its technological progress. Performance, an important means to improve product quality and market competitiveness. [0003] Automobile field road test concentrates on the typical road conditions of various road conditions in the actual use of automobiles. It is mutually verified, interdependent and complementary with the virtual test methods such as automobile indoor tests and driving simulators popular this year. One of the most important means to comprehensively test and evaluate the safety performance and reliability of motor sports. [...

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Application Information

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IPC IPC(8): G01M17/007G01C23/00G01D21/02
Inventor 管欣高镇海闫冬杨得军张素民
Owner JILIN UNIV
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