CN104596733A - Novel airplane model basin high-speed test data collecting method - Google Patents

Abstract

Disclosed is a novel airplane model basin high-speed test data collecting method. The novel airplane model basin high-speed test data collecting method comprises the steps of a, data collecting equipment installation and b, data collecting manner implementation. The data collecting manner implementation comprises, firstly, performing three-dimensional shooting on the overall process of airplane model high-speed test to obtain image records of an entire test cycle, and obtaining related data parameters of mark balls; secondly, utilizing the motion capture software of QualisyTrackManager to identify the points of the obtained mark balls, and selecting the motion tracks of the points with high completing quality and high definition; lastly, performing analysis. The novel airplane model basin high-speed test data collecting method has the advantages that an optical capturing mode achieves high sampling frequency and installation convenience, and meanwhile, the measuring points can be added or reduced according to test requirements or personal demands, so that the comparability of test data can be greatly improved, and also the test efficiency can be improved. The novel airplane model basin high-speed test data collecting method is practical, feasible, simple in operation, reliable in test results and wide in application range.

Description

A kind of novel model aircraft pond high-speed test (HST) collecting method

Technical field

The present invention relates to and relate to the hydrodynamic test such as boats and ships, seaplane field, be specifically related to a kind of novel model aircraft pond high-speed test (HST) collecting method.

Background technology

At present, conventional airplane model basin towing trial velocity ratio is higher, and acquisition mode is all carry out data acquisition by the various states of access type sensor to test.The installation of various sensor is all the detecting information of a certain this position of position acquisition being fixed on tested model aircraft by wireless and wired mode, and this mounting means may cause the impacts such as the increase of tested model weight, complex circuit, dismounting inconvenience.When meeting multi-channel data acquisition, need the work of at substantial during wiring, the port number that collecting device needs also will reach testing requirements.The recovery of data also may occur that test speed high causing gathers the problems such as interruption.

Summary of the invention

The object of the invention is for conventional airplane model basin towing trial velocity ratio is higher at present, acquisition mode is all carry out data acquisition by the various states of access type sensor to test.The installation of various sensor is all the detecting information of a certain this position of position acquisition being fixed on tested model aircraft by wireless and wired mode, and this mounting means may cause the impacts such as the increase of tested model weight, complex circuit, dismounting inconvenience.When meeting multi-channel data acquisition, need the work of at substantial during wiring, the port number that collecting device needs also will reach testing requirements.Also may there is the high deficiency causing gathering the problems such as interruption of test speed in the recovery of data, and provide a kind of novel model aircraft pond high-speed test (HST) collecting method.

Step of the present invention is as follows:

A, data acquisition equipment are installed:

Be arranged on respectively on test stand by four optical cameras, the whole process of the test of record testee enabling camera complete, the scope of shooting covers bottom whole trailer, one group of mark bead is separately fixed at the position tested model aircraft needing measure;

B, data acquisition modes:

L-type is demarcated frame to be positioned on model and to be consistent in level, angle is consistent, the position making L-type demarcate frame overlaps with ideal coordinates system, the visual field of guaranteeing each camera can both be seen L-type demarcates four points of frame, T-shaped demarcation bar is positioned over above L-type demarcation frame and starts to gather, and rock T-shaped bar, make on T-shaped bar 4 points be caught on camera a visual field to cover as far as possible, collection point mark bead is positioned over the bow of tested model, midships section, stern, guarantee that the whole motion process of model can be caught on camera head and all catch, whole process of the test conveniently pond high-speed test (HST) is carried out, three-dimensional shooting is carried out to model aircraft high-speed test (HST) overall process, obtain whole test period graphic recording, and obtain the related data parameter of mark bead, the point of Qualisy Track Manager motion capture software to obtained mark bead is used to identify again, choose difficulty action accomplishment high, the motion trace data of the point that sharpness is good, finally analyze.

Advantage of the present invention is: by the acquisition mode of optical motion capture, not only sample frequency is high, easy for installation, can need to increase or reduce measurement point according to testing requirements and self, substantially increase the comparability of test figure, also improve test efficiency simultaneously.The method is practical, feasible, simple to operate, and reliable test result is applied widely.

Embodiment

Step of the present invention is as follows:

Motion capture software (QTM):

This test method relates to a kind of novel optics dynamic capture system software, changes the QTM(Qualisys Track Manager that system software mainly uses Qualisys company of Sweden to develop) software processes.QTM software, it is a set of software kit being applied to its three-dimensional optical motion capture system of Qualisys company of Sweden exploitation, this software both can as the software kit of hardware system, for control hardware system and Real-time Collection exercise data, again the process software of exercise data, for the demarcation of test figure that gathers and process.The movement locus that this software catches tested bead (mark bead) by optical lens carries out data analysis, and the mark bead hereinafter occurred is all tested bead.

A, data acquisition equipment are installed:

Be arranged on respectively on test stand by four optical cameras, the whole process of the test of record testee enabling camera complete, the scope of shooting covers bottom whole trailer, one group of mark bead is separately fixed at the position tested model aircraft needing measure;

B, data acquisition modes:

L-type is demarcated frame to be positioned on model and to be consistent in level, angle is consistent, the position making L-type demarcate frame overlaps with ideal coordinates system, the visual field of guaranteeing each camera can both be seen L-type demarcates four points of frame, T-shaped demarcation bar is positioned over above L-type demarcation frame and starts to gather, and rock T-shaped bar, make on T-shaped bar 4 points be caught on camera a visual field to cover as far as possible, collection point mark bead is positioned over the bow of tested model, midships section, stern, guarantee that the whole motion process of model can be caught on camera head and all catch, whole process of the test conveniently pond high-speed test (HST) is carried out, three-dimensional shooting is carried out to model aircraft high-speed test (HST) overall process, obtain whole test period graphic recording, and obtain the related data parameter of mark bead, the point of Qualisy Track Manager motion capture software to obtained mark bead is used to identify again, choose difficulty action accomplishment high, the motion trace data of the point that sharpness is good, finally analyze.

Claims (1)

1. a novel model aircraft pond high-speed test (HST) collecting method, is characterized in that step is as follows:

A, data acquisition equipment are installed:

Be arranged on respectively on test stand by four optical cameras, the whole process of the test of record testee enabling camera complete, the scope of shooting covers bottom whole trailer, one group of mark bead is separately fixed at the position tested model aircraft needing measure;

B, data acquisition modes:

L-type is demarcated frame to be positioned on model and to be consistent in level, angle is consistent, the position making L-type demarcate frame overlaps with ideal coordinates system, the visual field of guaranteeing each camera can both be seen L-type demarcates four points of frame, T-shaped demarcation bar is positioned over above L-type demarcation frame and starts to gather, and rock T-shaped bar, make on T-shaped bar 4 points be caught on camera a visual field to cover as far as possible, collection point mark bead is positioned over the bow of tested model, midships section, stern, guarantee that the whole motion process of model can be caught on camera head and all catch, whole process of the test conveniently pond high-speed test (HST) is carried out, three-dimensional shooting is carried out to model aircraft high-speed test (HST) overall process, obtain whole test period graphic recording, and obtain the related data parameter of mark bead, the point of Qualisy Track Manager motion capture software to obtained mark bead is used to identify again, choose difficulty action accomplishment high, the motion trace data of the point that sharpness is good, finally analyze.