Defogging method for video camera

A camera and optical transmitter technology, applied in the direction of camera, image communication, camera body, etc., can solve the problem of high energy consumption, and achieve the effect of simple structure and convenient use

Inactive Publication Date: 2015-02-25
LICERAM ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Although this method can achieve defogging and anti-fog, it needs to use infrared lamps for temperature adjustment all the time, which consumes a lot of energy.

Method used

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Examples

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Embodiment Construction

[0034] The technical scheme of the present invention will be further described in detail below:

[0035] A camera defogging method, including the following steps:

[0036] Step 1) Set the optical transmitter and optical receiver in the camera;

[0037] Step 2) Install a heating module and a fan near the camera window glass;

[0038] Step 3), using the light emitter to emit light to the inner wall of the camera window glass at a constant intensity;

[0039] Step 4), receiving the light reflected by the inner wall of the camera window glass after the light emitter is emitted by the light receiver through the light receiver;

[0040] Step 5), converting the light signal received by the optical receiver into an electrical signal;

[0041] Step 6), filter the converted electrical signal;

[0042] Step 7), calculate the intensity of the filtered electrical signal;

[0043] Step 8), compare the calculated electrical signal intensity with the preset intensity threshold:

[0044] If the calculated el...

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PUM

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Abstract

The invention discloses a defogging method for a video camera. A light transmitter and a light receiver are arranged in the video camera, and a heating module and a fan are arranged nearby window glass of the video camera. Light is transmitted to the inner wall of the window glass of the video camera at constant intensity through the light transmitter; the light receiver receives the light reflected by the inner wall of the window glass of the video camera after being transmitted by the light transmitter. A light signal received by the light receiver is converted into an electric signal, and then the electric signal is filtered; afterwards, the intensity of the filtered electric signal is compared with a preset intensity threshold value, and whether the heating module and the fan are controlled to work or not is controlled according to the comparison result. According to the defogging method, whether the window glass of the video camera fogs or not can be judged intelligently, and meanwhile defogging can be performed automatically when the window glass fogs.

Description

Technical field [0001] The invention relates to the field of monitoring, in particular to a method for defogging a camera. Background technique [0002] A video camera is a machine that converts optical image signals into electrical signals for storage or transmission. When we shoot an object, the light reflected on the object is collected by the camera lens, so that it is focused on the light-receiving surface of the camera device (such as the target surface of the camera tube), and then the light is converted into electrical energy by the camera device, which is obtained "Video Signal". The photoelectric signal is very weak and needs to be amplified by a pre-amplifier circuit, and then processed and adjusted by various circuits. The final standard signal can be sent to a video recorder and other recording media for recording, or transmitted through a propagation system or sent to a monitor show. [0003] Just like cameras, early video cameras needed to use negatives (that is, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/225G03B17/55
Inventor 孙道明司马云吴会利谢中明
Owner LICERAM ELECTRONICS TECH
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