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Alignment method of shooting line and object moving direction based on linear array CCD camera velocity measurement

A technology of object movement and direction of movement, applied in radio wave measurement systems, devices used to measure the time required to move a certain distance, re-radiation of electromagnetic waves, etc., can solve problems such as cloth deviation from the direction of movement and inaccurate CCD speed measurement, etc., to achieve Improve speed measurement accuracy, high measurement accuracy and low price

Inactive Publication Date: 2009-12-02
ANHUI HONGSHI OPTOELECTRONICS HIGH TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0007] However, when the linear array CCD is used to measure the speed of cloth, etc., it often happens that the cloth deviates from the direction of motion, resulting in inaccurate CCD speed measurement. At present, there is no solution

Method used

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  • Alignment method of shooting line and object moving direction based on linear array CCD camera velocity measurement
  • Alignment method of shooting line and object moving direction based on linear array CCD camera velocity measurement

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Embodiment Construction

[0033] A method for aligning a shooting line with a moving direction of an object based on a linear array CCD camera speed measurement, comprising the following contents:

[0034] (1), above the fast-moving object (cloth) 1, in the direction of motion of the object, set a linear array CCD speed measuring camera, with the front and rear two point light sources 2, 3, and the front and rear two point light sources 2, 3 Irradiate on the surface of the object to produce front and rear light spots 4, 5; the linear array CCD speed measuring camera takes an image of the object surface at a certain moment, the image contains the front and rear light spot images, and the front and rear light spot images respectively contain corresponding to The surface information of the first object 6 and the surface information of the second object 7 at the positions of the front and rear light spots;

[0035] (2), according to the distance between the front and rear light spots produced by the two po...

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Abstract

The invention discloses an Alignment method of shooting line and object moving direction based on linear array CCD camera velocity measurement; a linear array CCD camera, a front laser point light source and a back laser point light source are arranged above a fast-moving object along the object moving direction, the front laser point light source and the back laser point light source are irradiated on the surface of the object to generate a front light spot and a back light spot; by continuously shooting pictures when the surface of the moving object is located in a certain place of the shooting line and shooting pictures again after the object moves a certain distance, the invention finds out whether the pictures of the surface of the object at a certain place appear in the pictures shot later, if so, the object moving direction is in accordance with the shooting line and stays the same without deviation, otherwise, deviation occurs to the object moving direction, then the linear array CCD camera needs turning a small angle, so that the shooting line is in accordance with the object moving direction, thus maintaining the precision of the camera in measuring the object velocity, and greatly improving the velocity measurement precision of the linear array CCD camera.

Description

technical field [0001] The invention belongs to a speed measurement technology, in particular to a method for aligning a shooting line with an object moving direction based on linear array CCD correlation speed measurement. Background technique [0002] Non-contact speed measurement has a wide range of applications, such as the speed measurement of high-speed moving textiles and printed matter, the measurement of high-speed paper strips for cigarette machines, the flow rate measurement of high-speed fluids, the speed measurement of high-temperature steel plates in rolling mills, and the speed measurement of high-temperature flat glass in glass factories , Vehicle and ground relative speed measurement, motor speed measurement, conveyor belt, transmission belt speed, slip measurement, etc. [0003] The traditional laser Doppler velocimetry technology has high measurement accuracy and fast measurement speed, but it has high requirements on the surface of the object, cannot adap...

Claims

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Application Information

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IPC IPC(8): G01P3/68
Inventor 王世勇赵吉文路巍徐道际查世红
Owner ANHUI HONGSHI OPTOELECTRONICS HIGH TECH CO LTD
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