Safety state detection device for LED display screen

Abstract

The invention relates to a safety state detection device for an LED display screen, and the device comprises an operation analysis device which is connected with the LED display screen and is used for detecting whether the LED display screen is in an operation state at present; the object detection mechanism is used for judging whether the closed image blocks are closed image blocks suspected to have sharp objects or closed image blocks excluding sharp objects; and the state alarm mechanism is used for determining whether to send out a sharp object existence alarm signal based on the output of the object detection mechanism. According to the invention, whether sharp objects exist in the surrounding environment of the LED display screen is monitored on site by using a targeted visual analysis mechanism, and remote alarm is carried out when the sharp objects exist, so that directional monitoring and prevention of the sharp objects in the surrounding environment of the LED display screen are realized; therefore, guarantee is provided for safe use of the LED display screen.

Description

Technical Field

[0001] The invention relates to the field of LED display screens, and in particular to a safety state detection device for LED display screens. Background Art

[0002] LED display screens are divided into graphic display screens and video display screens, both of which are composed of LED matrix blocks. Graphic display screens can display Chinese characters, English text and graphics synchronously with computers; video display screens are controlled by microcomputers, with graphics, images and rich graphics, playing various information in real-time, synchronous and clear information dissemination methods, and can also display two-dimensional, three-dimensional animations, videos, TV, VCD programs and live events. LED display screens display pictures with bright colors and strong three-dimensional sense, as quiet as oil paintings and as dynamic as movies. They are widely used in stations, docks, airports, shopping malls, hospitals, hotels, banks, securities markets, construction markets, auction houses, industrial enterprise management and other public places.

[0003] However, during the use of LED display screens, due to the fragility of the screen, it is easy to be damaged by sharp objects nearby. Therefore, it is necessary to monitor the surrounding environment of the LED display screen for sharp objects at all times, and to issue an on-site alarm or a remote alarm when such objects are present. Obviously, there is no corresponding technical solution in the prior art, which makes it difficult to effectively guarantee the intelligence level and safety of LED display screens. Summary of the invention

[0004] In order to solve the technical problems in the prior art, the present invention provides a safety status detection device for an LED display screen, which can use a targeted visual analysis mechanism to conduct on-site monitoring of whether there are sharp objects in the surrounding environment of the LED display screen, and when there are sharp objects, remote alarm can be issued, thereby achieving directional monitoring and prevention of sharp objects in the surrounding environment of the LED display screen, thereby further improving the safety and reliability of the LED display screen.

[0005] According to the present invention, a safety status detection device for an LED display screen is provided, the device comprising: An operation analysis device is connected to the LED display screen, and is used to send a first control signal when detecting that the LED display screen is currently in an operating state, and is also used to send a second control signal when detecting that the LED display screen is currently in a non-operating state; A triggering shooting device is connected to the operation analysis device, and is used to execute a shooting action of the operation scene of the LED display screen when receiving the first control signal, so as to obtain and output a corresponding operation scene picture; A continuous enhancement device, connected to the trigger shooting device and comprising a first enhancement component, a second enhancement component and a third enhancement component, wherein the second enhancement component is connected to the first enhancement component and the third enhancement component respectively, and the connection enhancement device is used to receive the running scene picture, and sequentially perform a single or multiple point image restoration process, a sharpening process based on a Kirsch operator, and a process of retaining the junction of two parts with obvious color or light and dark contrast in the image on the running scene picture, so as to obtain and output a corresponding continuous enhancement image; An object detection mechanism is connected to the continuous enhancement device and includes a gradient recognition device, an edge recognition device and a directional recognition device. The edge recognition device is respectively connected to the gradient recognition device and the directional recognition device. The object detection mechanism is used to obtain the R channel value, G channel value and B channel value of each pixel point in the continuous enhancement image in the RGB space, determine the R channel gradient value, G channel gradient value and B channel gradient value based on the R channel value, G channel value and B channel value of its adjacent pixel points, and when there is a channel gradient value greater than or equal to the set gradient value limit among the R channel gradient value, the G channel gradient value and the B channel gradient value , judging it as an edge pixel point to obtain each edge pixel point in the continuous enhanced image, combining the each edge pixel point to obtain one or more closed image blocks in the continuous enhanced image, and performing the following sharp object recognition processing on each closed image block: obtaining each portion of curvature value corresponding to each position evenly spaced on the block edge curve corresponding to the closed image block, and when the number of curvature values ​​exceeding the set curvature threshold in the each portion of curvature value accounts for more than or equal to the set proportion limit, judging the closed image block as a closed image block suspected of having a sharp object, otherwise, judging the closed image block as a closed image block excluding the presence of a sharp object; The status alarm mechanism is connected to the object detection mechanism and is used to send out a sharp object presence alarm signal when there is a closed image block that is judged to be suspected of containing a sharp object in one or more closed image blocks in the continuous enhanced image.

[0006] It can be seen that the present invention has at least the following four important invention points: Invention point A: An object detection mechanism including a gradient recognition device, an edge recognition device and a directional recognition device is used to complete edge pixel point detection based on channel numerical analysis and identification processing of sharp objects, thereby improving the speed and accuracy of sharp object identification; Invention point B: Specifically, the R channel value, G channel value and B channel value of each pixel in the continuous enhanced image obtained after the targeted enhancement of the imaging image corresponding to the operation scene of the LED display screen are obtained in the RGB space, and the R channel gradient value, G channel gradient value and B channel gradient value of the pixel are determined based on the R channel value, G channel value and B channel value of the adjacent pixel, and when there is a channel gradient value greater than or equal to the set gradient value limit among the R channel gradient value, G channel gradient value and B channel gradient value, it is judged to be an edge pixel to obtain each edge pixel in the continuous enhanced image, and the edge pixel points are combined to obtain one or more closed image blocks in the continuous enhanced image; Inventive point C: Perform the following sharp object recognition processing on each closed image block: obtain the curvature values ​​corresponding to the evenly spaced positions on the block edge curve corresponding to the closed image block, and when the number of curvature values ​​exceeding the set curvature threshold in the curvature values ​​is greater than or equal to the set proportion limit, judge the closed image block as a closed image block suspected of having a sharp object, otherwise, judge the closed image block as a closed image block excluding the presence of a sharp object; Invention point D: The reference status alarm mechanism is used to send out a sharp object presence alarm signal when there are closed image blocks that are judged to be suspected of containing sharp objects in more than one closed image blocks in the continuously enhanced image; otherwise, it sends out a sharp object absence notification signal, thereby minimizing screen damage to the LED display screen caused by nearby sharp objects. DETAILED DESCRIPTION

[0007] The implementation scheme of the safety status detection device for LED display screen of the present invention will be described in detail below. Example 1

[0008] According to embodiment 1 of the present invention, a safety status detection device for an LED display screen is shown, the device comprising: An operation analysis device is connected to the LED display screen, and is used to send a first control signal when detecting that the LED display screen is currently in an operating state, and is also used to send a second control signal when detecting that the LED display screen is currently in a non-operating state; For example, the operation analysis device is connected to the LED display screen, and is used to send a first control signal when detecting that the LED display screen is currently in an operating state, and is also used to send a second control signal when detecting that the LED display screen is currently in a non-operating state. The operation analysis device can be implemented by using a SOC chip, and is connected to the LED display screen, and is used to send a first control signal when detecting that the LED display screen is currently in an operating state, and is also used to send a second control signal when detecting that the LED display screen is currently in a non-operating state; A triggering shooting device is connected to the operation analysis device, and is used to execute a shooting action of the operation scene of the LED display screen when receiving the first control signal, so as to obtain and output a corresponding operation scene picture; A continuous enhancement device, connected to the trigger shooting device and comprising a first enhancement component, a second enhancement component and a third enhancement component, wherein the second enhancement component is connected to the first enhancement component and the third enhancement component respectively, and the connection enhancement device is used to receive the running scene picture, and sequentially perform a single or multiple point image restoration process, a sharpening process based on a Kirsch operator, and a process of retaining the junction of two parts with obvious color or light and dark contrast in the image on the running scene picture, so as to obtain and output a corresponding continuous enhancement image; An object detection mechanism is connected to the continuous enhancement device and includes a gradient recognition device, an edge recognition device and a directional recognition device. The edge recognition device is respectively connected to the gradient recognition device and the directional recognition device. The object detection mechanism is used to obtain the R channel value, G channel value and B channel value of each pixel point in the continuous enhancement image in the RGB space, determine the R channel gradient value, G channel gradient value and B channel gradient value based on the R channel value, G channel value and B channel value of its adjacent pixel points, and when there is a channel gradient value greater than or equal to the set gradient value limit among the R channel gradient value, the G channel gradient value and the B channel gradient value , judging it as an edge pixel point to obtain each edge pixel point in the continuous enhanced image, combining the each edge pixel point to obtain one or more closed image blocks in the continuous enhanced image, and performing the following sharp object recognition processing on each closed image block: obtaining each portion of curvature value corresponding to each position evenly spaced on the block edge curve corresponding to the closed image block, and when the number of curvature values ​​exceeding the set curvature threshold in the each portion of curvature value accounts for more than or equal to the set proportion limit, judging the closed image block as a closed image block suspected of having a sharp object, otherwise, judging the closed image block as a closed image block excluding the presence of a sharp object; A state alarm mechanism connected to the object detection mechanism, configured to issue a sharp object presence alarm signal when there is a closed image block that is suspected to contain a sharp object in one or more closed image blocks in the continuous enhanced image; Wherein, the state alarm mechanism is further used to send out a sharp object non-existence notification signal when there is no closed image block determined to be suspected of containing a sharp object in one or more closed image blocks in the continuous enhanced image; Wherein, the trigger shooting device is also used to terminate the shooting action of the running scene of the LED display screen when receiving the second control signal. Example 2

[0009] Embodiment 2 according to the present invention shows a safety status detection device for an LED display screen.

[0010] Compared with Embodiment 1, the safety status detection device for an LED display screen shown in Embodiment 2 of the present invention may further include: a radiation amount detection device, which is arranged near the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component and is respectively connected to the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component; Among them, the radiation detection device is arranged near the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component and is respectively connected to the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component, including: the radiation detection device is used to realize on-site measurement of the current radiation amount of the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component respectively. Example 3

[0011] Embodiment 3 according to the present invention shows a safety status detection device for an LED display screen.

[0012] Compared with Embodiment 1, the safety status detection device for an LED display screen shown in Embodiment 3 of the present invention may further include: a height detection device, disposed near the object detection mechanism, the first reinforcement component, the second reinforcement component, and the third reinforcement component, and connected to the object detection mechanism, the first reinforcement component, the second reinforcement component, and the third reinforcement component, respectively; Among them, the height detection device is arranged near the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component and is respectively connected to the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component, including: the height detection device is used to realize on-site measurement of the current heights of the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component respectively.

[0013] Next, the specific structure of the safety status detection device for the LED display screen of the present invention will be further described.

[0014] In the safety state detection device for LED display screen according to various embodiments of the present invention: A GAL device is used to perform image data processing on the output data of the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component to obtain output processing data corresponding to the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component respectively.

[0015] In the safety state detection device for LED display screen according to various embodiments of the present invention: Using a GAL device to perform image data processing on the output data of the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component to obtain the output processing data corresponding to the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component respectively includes: performing non-scaling transformation blur processing on the output data of the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component to obtain the output processing data corresponding to the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component respectively.

[0016] In the safety state detection device for LED display screen according to various embodiments of the present invention: Using a GAL device to perform image data processing on the output data of the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component to obtain the output processing data corresponding to the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component respectively includes: performing median fuzzy processing on the output data of the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component to obtain the output processing data corresponding to the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component respectively.

[0017] In the safety state detection device for LED display screen according to various embodiments of the present invention: Using a GAL device to perform image data processing on the output data of the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component to obtain the output processing data corresponding to the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component respectively includes: performing Gaussian blur processing on the output data of the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component to obtain the output processing data corresponding to the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component respectively.

[0018] And in the safety status detection device for LED display screen according to various embodiments of the present invention: Using a GAL device to perform image data processing on the output data of the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component to obtain the output processing data corresponding to the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component respectively includes: performing bilateral filtering fuzzy processing on the output data of the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component to obtain the output processing data corresponding to the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component respectively.

[0019] In addition, in the safety status detection device for the LED display screen, the object detection mechanism is used to obtain the R channel value, G channel value and B channel value of each pixel point in the continuous enhanced image in the RGB space, and determine its R channel gradient value, G channel gradient value and B channel gradient value based on the R channel value, G channel value and B channel value of its adjacent pixel points, including: the value of any color channel value among the R channel value, G channel value and B channel value of each pixel point in the RGB space is between 0-255.

[0020] The safety status detection device for an LED display screen of the present invention is used to address the technical problem in the prior art that an LED display screen is easily damaged by nearby sharp objects during use. By using a targeted visual analysis mechanism, the surrounding environment of the LED display screen is monitored on-site to determine whether there are sharp objects, and a remote alarm is issued when there are sharp objects, thereby achieving directional monitoring and prevention of sharp objects in the surrounding environment of the LED display screen, thereby providing protection for the safe use of the LED display screen.

[0021] After describing the present invention in detail, those skilled in the art will recognize that, for the present disclosure, the present invention can be modified without departing from the concept of the present invention described herein. Therefore, the scope of the present invention should not be limited to the specific embodiments shown and described.

Claims

1. A safety status detection device for an LED display screen, characterized in that: The device comprises: An operation analysis device is connected to the LED display screen, and is used to send a first control signal when detecting that the LED display screen is currently in an operating state, and is also used to send a second control signal when detecting that the LED display screen is currently in a non-operating state; A triggering shooting device is connected to the operation analysis device, and is used to execute a shooting action of the operation scene of the LED display screen when receiving the first control signal, so as to obtain and output a corresponding operation scene picture; A continuous enhancement device, connected to the trigger shooting device and comprising a first enhancement component, a second enhancement component and a third enhancement component, wherein the second enhancement component is connected to the first enhancement component and the third enhancement component respectively, and the connection enhancement device is used to receive the running scene picture, and sequentially perform a single or multiple point image restoration process, a sharpening process based on a Kirsch operator, and a process of retaining the junction of two parts with obvious color or light and dark contrast in the image on the running scene picture, so as to obtain and output a corresponding continuous enhancement image; An object detection mechanism is connected to the continuous enhancement device and includes a gradient recognition device, an edge recognition device and a directional recognition device. The edge recognition device is respectively connected to the gradient recognition device and the directional recognition device. The object detection mechanism is used to obtain the R channel value, G channel value and B channel value of each pixel point in the continuous enhancement image in the RGB space, determine the R channel gradient value, G channel gradient value and B channel gradient value based on the R channel value, G channel value and B channel value of its adjacent pixel points, and when there is a channel gradient value greater than or equal to the set gradient value limit among the R channel gradient value, the G channel gradient value and the B channel gradient value , judging it as an edge pixel point to obtain each edge pixel point in the continuous enhanced image, combining the each edge pixel point to obtain one or more closed image blocks in the continuous enhanced image, and performing the following sharp object recognition processing on each closed image block: obtaining each portion of curvature value corresponding to each position evenly spaced on the block edge curve corresponding to the closed image block, and when the number of curvature values ​​exceeding the set curvature threshold in the each portion of curvature value accounts for more than or equal to the set proportion limit, judging the closed image block as a closed image block suspected of having a sharp object, otherwise, judging the closed image block as a closed image block excluding the presence of a sharp object; The status alarm mechanism is connected to the object detection mechanism and is used to send out a sharp object presence alarm signal when there is a closed image block that is judged to be suspected of containing a sharp object in one or more closed image blocks in the continuous enhanced image.

2. The safety status detection device for an LED display screen according to claim 1, characterized in that: The state alarm mechanism is also used to send a sharp object non-existence notification signal when there is no closed image block determined to be suspected of containing a sharp object in one or more closed image blocks in the continuous enhanced image; Wherein, the trigger shooting device is also used to terminate the shooting action of the running scene of the LED display screen when receiving the second control signal.

3. The safety status detection device for LED display screen according to claim 2, characterized in that: The device also includes: a radiation amount detection device, which is arranged near the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component and is respectively connected to the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component; Among them, the radiation detection device is arranged near the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component and is respectively connected to the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component, including: the radiation detection device is used to realize on-site measurement of the current radiation amount of the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component respectively.

4. The safety status detection device for LED display screen according to claim 2, characterized in that: The device also includes: a height detection device, disposed near the object detection mechanism, the first reinforcement component, the second reinforcement component, and the third reinforcement component, and connected to the object detection mechanism, the first reinforcement component, the second reinforcement component, and the third reinforcement component, respectively; Among them, the height detection device is arranged near the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component and is respectively connected to the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component, including: the height detection device is used to realize on-site measurement of the current heights of the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component respectively.

5. The safety status detection device for an LED display screen according to any one of claims 2 to 4, characterized in that: A GAL device is used to perform image data processing on the output data of the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component to obtain output processing data corresponding to the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component respectively.

6. The safety status detection device for an LED display screen according to claim 5, characterized in that: Using a GAL device to perform image data processing on the output data of the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component to obtain the output processing data corresponding to the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component respectively includes: performing non-scaling transformation blur processing on the output data of the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component to obtain the output processing data corresponding to the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component respectively.

7. The safety status detection device for an LED display screen according to claim 5, characterized in that: Using a GAL device to perform image data processing on the output data of the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component to obtain the output processing data corresponding to the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component respectively includes: performing median fuzzy processing on the output data of the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component to obtain the output processing data corresponding to the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component respectively.

8. The safety status detection device for an LED display screen according to claim 5, characterized in that: Using a GAL device to perform image data processing on the output data of the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component to obtain the output processing data corresponding to the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component respectively includes: performing Gaussian blur processing on the output data of the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component to obtain the output processing data corresponding to the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component respectively.

9. The safety status detection device for an LED display screen according to claim 5, characterized in that: Using a GAL device to perform image data processing on the output data of the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component to obtain the output processing data corresponding to the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component respectively includes: performing bilateral filtering fuzzy processing on the output data of the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component to obtain the output processing data corresponding to the object detection mechanism, the first reinforcement component, the second reinforcement component and the third reinforcement component respectively.