Video defogging control circuit

Abstract

The utility model discloses a video defogging control circuit, belongs to the technical field of video processing, and solves the problem that the current video system is still lagging when acquiring videos under the condition of no fog influence. Comprising a video decoding module and a video defogging module, the output end of the video decoding module is coupled with the input end of the video defogging module, the power connection end of the video defogging module is coupled with a humidity monitoring circuit, and the humidity monitoring circuit controls the video defogging module to be powered on to work after secondary detection according to environment humidity. When the video defogging device works, the humidity sensor detects the environment humidity and sends out a signal, when the humidity exceeds a preset first reference, the trigger module controls the fan to guide air to further detect the environment humidity, and when the humidity exceeds a preset second reference, the video defogging module works, so that the video definition is ensured, and the visual monitoring effect is optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of video processing, in particular to a video defogging control circuit. Background Art

[0002] With the rapid advancement of contemporary science and technology, video imaging technology has penetrated deeply into industrial production and people's daily lives, becoming an indispensable part. In a theoretical ideal environment, assuming that the air is extremely fresh and free of impurities, people's line of sight can even extend to nearly 100 kilometers. However, the real environment is often not so perfect. Natural or man-made factors such as hazy fog and humid water vapor may interfere with the line of sight, significantly shortening the effective distance we can observe clearly.

[0003] However, most existing video systems are designed without considering environmental issues. Once environmental problems occur, the image quality will be severely degraded, which will have a significant impact on the video content.

[0004] Therefore, the existing technology often uses the video encoding chip BU6521KV to perform video defogging. The long-term operation of the video encoding chip BU6521KV will require all video images to pass through it before being output to the outside. However, this also indirectly leads to the problem that the current video system still freezes when acquiring video even when there is no fog.

[0005] Therefore, a video defogging control circuit is proposed to solve or alleviate the above problems. Utility Model Content

[0006] The utility model aims to solve the shortcomings in the prior art and proposes a video defogging control circuit.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A video defogging control circuit comprises a video decoding module and a video defogging module, wherein the output end of the video decoding module is coupled to the input end of the video defogging module, the power connection end of the video defogging module is coupled to a humidity monitoring circuit, and the humidity monitoring circuit controls the video defogging module to be powered on and work after secondary detection of the ambient humidity.

[0009] Preferably, the humidity monitoring circuit comprises

[0010] A humidity sensor that collects ambient humidity and generates a humidity signal;

[0011] A first voltage comparison circuit, whose input terminal is coupled to the output terminal of the humidity sensor, wherein the first voltage comparison circuit receives the humidity signal and sends a first comparison signal in response to the humidity signal being greater than a first humidity reference signal therein;

[0012] The first trigger module has an input terminal coupled to the output terminal of the first voltage comparison circuit, and controls the video defogging module to power on and operate in response to the first comparison signal.

[0013] Preferably, the humidity monitoring circuit further includes

[0014] A fan for directing air flow toward the humidity sensor;

[0015] A second voltage comparison circuit, an input end of which is coupled to the output end of the humidity sensor, the second voltage comparison circuit receives the humidity signal and sends a second comparison signal in response to the humidity signal being greater than a second humidity reference signal, the second humidity reference signal being greater than the first humidity reference signal;

[0016] The second trigger module has an input terminal coupled to the output terminal of the second voltage comparison circuit, and controls the fan to power on in response to the second comparison signal.

[0017] Preferably, the first voltage comparison circuit is a voltage comparator, the first trigger module is a first transistor switch, the output end of the voltage comparator is coupled to the base of the first transistor switch, and the video defogging module is coupled to the emitter and collector paths of the first transistor switch.

[0018] Preferably, the second voltage comparison circuit is a voltage comparator, the second trigger module is a second transistor switch, the output end of the voltage comparator is coupled to the base of the second transistor switch, and the fan is coupled to the emitter and collector paths of the second transistor switch.

[0019] Preferably, it further comprises a camera, wherein the output end of the camera is coupled to the input end of the video decoding module.

[0020] Preferably, the video decoding module and the video defogging module are both coupled to a register via an I2C bus, and a controller and a display are coupled to the I2C bus.

[0021] Preferably, the video decoding module is a TVP5150AM1 PBSR video decoding chip, and the video defogging module is a video encoding chip BU6521KV.

[0022] Preferably, the controller is a STM32F051K8U6 control chip.

[0023] The utility model has the following beneficial effects:

[0024] When the utility model is working, the humidity sensor detects the ambient humidity and sends a signal. When the humidity exceeds a preset first benchmark, the trigger module controls the fan to guide the air to further detect the ambient humidity. When the humidity exceeds a preset second benchmark, the video defogging module works to ensure video clarity and optimize visual monitoring effects. Under normal circumstances, the video defogging module does not work, reducing the environment for obtaining video images under normal circumstances, reducing data processing volume, and avoiding freezes. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a schematic diagram of the structure of the utility model;

[0027] Figure 2 This is the wiring diagram of the humidity monitoring circuit in the utility model.

[0028] 1. Controller; 2. Serial port module; 3. Camera; 4. Video decoding module; 5. Video defogging module; 6. Display; 7. Humidity sensor; 8. Second voltage comparison circuit; 9. Second trigger module; 10. Fan; 11. First voltage comparison circuit; 12. First trigger module. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] In the description of the present utility model, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present utility model.

[0033] Furthermore, the terms “first”, “second”, “third”, etc. are merely used for distinguishing descriptions and are not to be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] A video defogging control circuit, such as Figure 1 As shown, it includes a camera 3, a video decoding module 4, and a video defogging module 5. The output end of the video decoding module 4 is coupled to the input end of the video defogging module 5, the output end of the camera 3 is coupled to the input end of the video decoding module 4, the video decoding module 4 and the video defogging module 5 are coupled to the register through an I2C bus, a controller 1 and a display 6 are coupled to the I2C bus, the video decoding module 4 is a TVP5150AM1 PBSR video decoding chip, the video defogging module 5 is a video encoding chip BU6521 KV, and the controller 1 is an STM32F051 K8U6 control chip.

[0036] like Figure 1 As shown, the power terminal of the video defogging module 5 is coupled to a humidity monitoring circuit, and the humidity monitoring circuit controls the video defogging module 5 to be powered on and work after secondary detection of the ambient humidity.

[0037] The humidity monitoring circuit includes a humidity sensor 7 , a first voltage comparison circuit 11 , a first trigger module 12 , a second voltage comparison circuit 8 , a second trigger module 9 , and a fan 10 .

[0038] The humidity sensor 7 collects the ambient humidity and generates a humidity signal. The input end of the first voltage comparison circuit 11 is coupled to the output end of the humidity sensor 7. The first voltage comparison circuit 11 receives the humidity signal and sends a first comparison signal in response to the humidity signal being greater than the first humidity reference signal. The input end of the first trigger module 12 is coupled to the output end of the first voltage comparison circuit 11. In response to the first comparison signal, it controls the video defogging module 5 to be powered on. The fan 10 is used to guide the air to flow toward the humidity sensor 7. The input end of the second voltage comparison circuit 8 is coupled to the output end of the humidity sensor 7. The second voltage comparison circuit 8 receives the humidity signal and sends a second comparison signal in response to the humidity signal being greater than the second humidity reference signal. The second humidity reference signal is greater than the first humidity reference signal. The input end of the second trigger module 9 is coupled to the output end of the second voltage comparison circuit 8. In response to the second comparison signal, it controls the fan 10 to be powered on.

[0039] like Figure 2 As shown, the first voltage comparison circuit 11 is a voltage comparator, the first trigger module 12 is a first triode switch, the output end of the voltage comparator is coupled to the base of the first triode switch, the video defogging module 5 is coupled to the emitter and collector paths of the first triode switch, the second voltage comparison circuit 8 is a voltage comparator, the second trigger module 9 is a second triode switch, the output end of the voltage comparator is coupled to the base of the second triode switch, and the fan 10 is coupled to the emitter and collector paths of the second triode switch.

[0040] When the utility model is actually working, the humidity sensor 7 will first detect the ambient humidity and send out a humidity signal. Since the second humidity reference signal is greater than the first humidity reference signal, when the humidity signal is given to the second voltage comparison circuit 8, the humidity voltage converted by the humidity signal will be greater than the second reference voltage converted by the second humidity reference signal. The second voltage comparison circuit 8 therefore responds and sends out a second comparison signal to the base of the second trigger module 9, so that the collector and emitter of the second trigger module 9 form a path, so that the fan 10 is powered on and starts working, and the fan 10 guides the ambient air to enter the humidity sensor 7. The humidity sensor 7 makes contact to ensure that the object monitored by the humidity sensor 7 is the actual environmental humidity. At this time, if the humidity signal rises to be greater than the first humidity reference signal, the first voltage comparison circuit 11 will send a first comparison signal to the base of the first trigger module 12, so that the loop where the collector and emitter of the first trigger module 12 are located forms a path, so that the video defogging module 5 can be powered on and work, so that the advanced video defogging function is integrated into the current video processing system. This improvement significantly overcomes the problem of video quality loss under adverse conditions related to humidity such as full of water fog, greatly enhances the video clarity in an environment with obstructed vision, and optimizes the effect of visual monitoring.

[0041] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A video defogging control circuit, characterized in that: The invention comprises a video decoding module (4) and a video defogging module (5), wherein the output end of the video decoding module (4) is coupled to the input end of the video defogging module (5), the power connection end of the video defogging module (5) is coupled to a humidity monitoring circuit, and the humidity monitoring circuit controls the video defogging module (5) to be powered on and work after secondary detection of the ambient humidity.

2. A video defogging control circuit according to claim 1, characterized in that: The humidity monitoring circuit includes A humidity sensor (7) which collects ambient humidity and generates a humidity signal; A first voltage comparison circuit (11), an input end of which is coupled to an output end of the humidity sensor (7), wherein the first voltage comparison circuit (11) receives a humidity signal and issues a first comparison signal in response to the humidity signal being greater than a first humidity reference signal therein; The first trigger module (12) has an input end coupled to the output end of the first voltage comparison circuit (11), and controls the video defogging module (5) to power on and operate in response to a first comparison signal.

3. A video defogging control circuit according to claim 2, characterized in that: The humidity monitoring circuit also includes A fan (10) for directing air to flow toward the humidity sensor (7); A second voltage comparison circuit (8), an input end of which is coupled to the output end of the humidity sensor (7), the second voltage comparison circuit (8) receiving the humidity signal and sending a second comparison signal in response to the humidity signal being greater than a second humidity reference signal, the second humidity reference signal being greater than the first humidity reference signal; The second trigger module (9) has an input end coupled to the output end of the second voltage comparison circuit (8), and controls the fan (10) to be powered on in response to the second comparison signal.

4. A video defogging control circuit according to claim 2, characterized in that: The first voltage comparison circuit (11) is a voltage comparator, the first trigger module (12) is a first transistor switch, the output end of the voltage comparator is coupled to the base of the first transistor switch, and the video defogging module (5) is coupled to the emitter and collector paths of the first transistor switch.

5. The video defogging control circuit according to claim 3, characterized in that: The second voltage comparison circuit (8) is a voltage comparator, the second trigger module (9) is a second triode switch, the output end of the voltage comparator is coupled to the base of the second triode switch, and the fan (10) is coupled to the emitter and collector paths of the second triode switch.

6. A video defogging control circuit according to claim 1, characterized in that: It also comprises a camera (3), the output end of the camera (3) being coupled to the input end of the video decoding module (4).

7. The video defogging control circuit according to claim 1, characterized in that: The video decoding module (4) and the video defogging module (5) are both coupled to the register via an I2C bus, and a controller (1) and a display (6) are coupled to the I2C bus.

8. The video defogging control circuit according to claim 1, characterized in that: The video decoding module (4) is a TVP5150AM1 PBSR video decoding chip, and the video defogging module (5) is a video encoding chip BU6521 KV.

9. The video defogging control circuit according to claim 7, characterized in that: The controller (1) is a STM32F051 K8U6 control chip.

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