Video monitoring accurate interference method and system based on coaxial optical path structure

A technology of video monitoring and coaxial light, which is applied in the field of laser interference, can solve the problem of interference with the target camera, etc., and achieve the effects of high interference accuracy, good reliability, and small system size

CN113794843AActive Publication Date: 2021-12-14杭州越光智能科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-12-14

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Abstract

The invention discloses a video monitoring accurate interference method and system based on a coaxial optical path structure. The method comprises the steps: a camera of a camera module shoots a target camera, and a data processing module calculates an angle deviation value between an image formed by the target camera and the center of a view field of the camera, and converts the angle deviation value into a rotation parameter of a dichroscope of the camera module; and a motion control module controls a dichroscope to rotate by a corresponding angle according to the rotation parameter, and the dichroscope changes the emergent angle of the laser beam of the laser, so that the laser beam is consistent with the optical axis of the camera, and the laser beam accurately interferes with the target camera.
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Description

technical field

[0001] The invention relates to the technical field of laser interference, in particular to a method and system for precise interference of video surveillance based on a coaxial optical path structure. Background technique

[0002] In recent years, with the development of science and technology, the popularity of cameras has become higher and higher, which has greatly promoted social security and stability, and played a major role in protecting people's property safety. The Chinese invention patent with the publication number CN109521630B discloses a method and system for using laser to interfere with camera lens imaging. The method is mainly that the camera finds the target orientation, and transmits the orientation to the laser turntable to aim at the interference target; the laser transmitter is turned on to emit the laser beam, By controlling the vibrating mirror of the laser, the laser scans at a high frequency in space to cover a continuous area, so tha...

Examples

Embodiment 1

[0018] Embodiment 1: A kind of video surveillance accurate interference method based on coaxial optical path structure, as attached figure 1 and 2 As shown, it specifically includes the following steps:

[0019] S101. Point the device at the target camera 5, and the camera 2 of the camera module shoots the target camera 5;

[0020] S102, the data processing module calculates the angular deviation value of the image formed by the target camera and the center of field of view 1 of the camera, and converts it into the rotation parameter of the dichroic mirror 4 of the camera module;

[0021] S103, the motion control module controls the dichroic mirror 4 to rotate a corresponding angle according to the rotation parameter;

[0022] S104, start the laser 3 and modulate the laser, the laser 3 is modulated before launching, so that the laser beam emitted by the laser 3 is modulated by light intensity, frequency and divergence angle, so as to improve the angle and effect of interferi...