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Umbrella-shaped reflector vibration measurement device and method

A technology of vibration measurement and reflector, which is applied in the direction of measuring devices, measuring ultrasonic/sonic/infrasonic waves, instruments, etc., can solve the problems of limiting measurement accuracy, complicating photogrammetry analysis, etc., and achieve accurate measurement results

Pending Publication Date: 2018-10-26
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This results in noticeable light intensity variations in the image of the landmark area, complicating photogrammetric analysis and limiting the achievable measurement accuracy

Method used

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  • Umbrella-shaped reflector vibration measurement device and method
  • Umbrella-shaped reflector vibration measurement device and method
  • Umbrella-shaped reflector vibration measurement device and method

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Embodiment 1

[0045] Such as Figure 1 ~ Figure 4 As shown, this embodiment provides a vibration measurement device for an umbrella reflector, which includes an umbrella reflector 1, a vibration excitation mechanism and a visual detection mechanism 2, figure 1 The dotted line in indicates the connection relationship between each device, and the direction arrow indicates the transmission direction of the detection and control signal flow. figure 2 and image 3 The dashed lines indicate the orientation of the projector and high-speed camera lens.

[0046] Such as Figure 1 to Figure 5 As shown, the umbrella-shaped reflector 1 adopts a flexible structure similar to an umbrella, which can be expanded and contracted, and includes a vertical support rod 101 , a right-angled trapezoidal base 102 , eight reflective films 103 and eight ribs 104 .

[0047] The vertical support bar 101 has a first end and a second end opposite to the first end, each reflective film 103 also has a first end and a s...

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Abstract

The invention discloses an umbrella-shaped reflector vibration measurement device and method. The device comprises an umbrella-shaped reflector, a vibration excitation mechanism and a vision detectionmechanism. The umbrella-shaped reflector is provided with a reflective film, the vibration excitation mechanism is connected with the umbrella-shaped reflector and used for stimulating the umbrella-shaped reflector to vibrate, and the vision detection mechanism comprises a projector, a binocular vision system and an operating platform. The projector and the binocular vision system are arranged onthe operating platform, a lens of the projector faces the center of the reflective film and is used for projecting mark points to the surface of the reflective film, and the binocular vision system is used for detecting mark point areas on the surface of the reflective film. By noncontact vision detection, the mark points are projected to the surface of the reflective film through the projector;reflective film matching characteristics of the mark points are recognized by the binocular vision system, and accordingly vibration information is processed and analyzed to reflect dynamic morphologyof the reflective film in real time.

Description

technical field [0001] The invention relates to a vibration measurement device, in particular to a vibration measurement device and method for an umbrella reflector, which belongs to the field of vibration detection of space extension structures. Background technique [0002] Deployable communication antennas are key spacecraft subsystem components used in various mission applications, such as deep space probes, communications, reconnaissance, and environmental monitoring, and play an integral role in modern aerospace applications. The space communication environment is flooded with different electromagnetic signals of various frequencies or energies. In order to quickly and accurately identify target information, the increasing demand for high gain and high resolution motivates the enlargement of the antenna aperture. Apertures typically in the range of 5-8 meters will have to operate in the fixed and broadcast satellite service (FSS / BSS) and broadband satellite Ku-Ka band...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H9/00
CPCG01H9/00
Inventor 邱志成吴郭烽
Owner SOUTH CHINA UNIV OF TECH
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