CN109883609B - Real-time alarm method for air pressure borne by shell - Google Patents
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Abstract
The invention relates to a real-time alarm method for the pressure borne by a shell, which comprises the following steps of using a real-time alarm system for the pressure borne by the shell to alarm the pressure in real time, wherein the real-time alarm system for the pressure borne by the shell comprises: the pressure sensor is arranged in the film examination room, is positioned on the shell of the projection equipment, and is used for sensing the real-time air pressure in the film examination room and outputting the real-time air pressure in the film examination room; the air pressure alarm device is positioned on the shell of the projection device, is connected with the pressure sensor and is used for receiving the real-time air pressure in the examination room and carrying out corresponding air pressure alarm operation when the real-time air pressure in the examination room exceeds the limit; the system comprises a frequency division duplex device which is connected with a remote content auditing server and used for receiving a violent grade database which is sent by the content auditing server at preset time intervals, wherein the violent grade database takes the violent grade as an index and stores the benchmark action characteristics corresponding to each violent grade.
Description
Technical Field
The invention relates to the field of computer control, in particular to a real-time alarm method for air pressure borne by a shell.
Background
A fixed projector is composed of drive unit, film-feeding unit, optical unit, sound reproducing unit, machine body and electric appliance. The mobile projector is not attached with a loudspeaker, a loudspeaker and the like. The action of the parts of the film projector is as follows:
the transmission part: the kinetic energy supplied by the motor is transmitted to the sheet conveying part through a gear, a chain wheel, a toothed belt, a turbine worm and the like. A fixed three-phase synchronous motor is used; a single-phase motor is generally used on a mobile type; special models often require interlocking motors to ensure synchronization between the devices.
A sheet conveying part: the coiled film is sent from the film-supplying disc to the film window to be irradiated to show the picture, and the optical vocal-cord signal is converted into audio current through the sound-returning portion. And then the screened film is reeled up again. It is composed of film feeding and receiving box (or film arm), film feeding gear for feeding, intermitting and receiving film, intermitting movement mechanism, various pulleys, film door and picture regulating device. The narrow film moving projector uses an intermittent film-grabbing mechanism to replace an intermittent film-conveying gear. The core part of the film projector is an intermittent motion mechanism which changes continuous rotation into intermittent rotation and is matched with a light shielding plate, so that a film stably stays at a film window when light passes through, and the film is clearly imaged on a screen; the light is quickly pulled down when being shielded so as to avoid exposing the trace when the film moves. The standard film movement speed is 24 grids/second and to reduce the flicker effect, the mask blocks light twice per grid, increasing the flicker frequency to 48 times per second. The most widely used intermittent motion mechanism is the maltese cross
The cam 1, which rotates continuously, is provided with a guide pin 2, which rotates 1/4 cycles every time the cross car 3 is engaged with the radial slot, so that the intermittent film-feeding gear 4 rotates 90 degrees every time the transmission shaft rotates one circle (from a to e) to pull a film one time. The cross car is stationary during the process of e → a → b. Some narrow film projectors use optical intermittent compensation rather than mechanical intermittent mechanisms to help protect the film, but with loss of picture brightness. The take-up mechanism slows down as the diameter of the sheet roll increases to reduce tension.
An optical portion: it is composed of light source, reflecting or collecting lens, projection lens, lamp box and ventilating and radiating mechanism. When the film stops intermittently in the film window, the optical part illuminates the frame in the film window, and the frame is magnified by the projection lens and projected on the screen. Different screen sizes and projection distances, and projection lenses with different focal lengths are adopted; when projecting the deformed wide-screen film, the screen lens is widened. The light source also varies with the application of the projector, such as incandescent lamps, bromine tungsten lamps, xenon lamps, etc. The screen has high light source power when being large.
And a sound returning part: the sound information recorded by the optical or magnetic vocal cords on the film is restored into audio current, and the audio current is converted into sound through a loudspeaker or a loudspeaker. The part consists of an exciting bulb, an exciting lens, a light edge, a photoelectric tube, a vibration damper or a magnetic head. Some narrow film projectors have erasing and recording heads attached to the part to facilitate self-dubbing.
The body part: is a frame that supports and connects the various components. The rack is generally used for mounting electrical equipment, wires and the like. The external panel or surface is provided with instruments, indicator lights, operation switches and the like.
Disclosure of Invention
The invention provides a real-time alarm method for the air pressure borne by a shell, aiming at solving the technical problems that the reliability of the existing projection equipment is not high and the action degree of playing data cannot be effectively identified.
The invention has at least the following three important points:
(1) the real-time air pressure borne by the shell of the projection equipment is measured, so that different alarm operations are carried out based on the real-time air pressure, and the reliability of the projection equipment is improved;
(2) the action level of the currently detected movie playing content is subjected to on-site analysis in an automatic analysis mode, so that the eyes of movie inspectors are prevented from being damaged;
(3) by utilizing the characteristics that the performance of eliminating edge noise by corrosion expansion processing is superior to that of opening and closing operation processing and the detail of the protection target by opening and closing operation processing is superior to that of corrosion expansion processing, on the basis of analyzing the noise distribution condition of an image, a morphological processing mechanism based on the image content characteristics is established, and various defects brought by the original rigid image processing mechanism are overcome.
According to an aspect of the present invention, there is provided a real-time alarm method for the pressure of the air borne by the shell, the method including using a real-time alarm system for the pressure of the air borne by the shell to alarm the pressure of the air borne by the shell in real time, the real-time alarm system for the pressure of the air borne by the shell including: and the pressure sensor is arranged in the film examination room, is positioned on the shell of the projection equipment, and is used for sensing the real-time air pressure in the film examination room and outputting the real-time air pressure in the film examination room.
More specifically, in the real-time alarm system for the air pressure borne by the shell, the system further comprises:
and the air pressure alarm device is positioned on the shell of the projection device, is connected with the pressure sensor, and is used for receiving the real-time air pressure in the examination room and carrying out corresponding air pressure alarm operation when the real-time air pressure in the examination room exceeds the limit.
More specifically, in the real-time alarm system for the air pressure borne by the shell, the system further comprises:
the system comprises a frequency division duplex device which is connected with a remote content auditing server and used for receiving a violent grade database which is sent by the content auditing server at preset time intervals, wherein the violent grade database takes the violent grade as an index and stores the benchmark action characteristics corresponding to each violent grade.
More specifically, in the real-time alarm system for the air pressure borne by the shell, the system further comprises:
and the static storage equipment is connected with the frequency division duplex equipment, arranged in the film examination room and used for receiving and storing the violent grade database.
More specifically, in the real-time alarm system for the air pressure borne by the shell, the system further comprises:
the scene acquisition equipment is arranged in a film examining room, is positioned at one side of the static storage equipment, and is used for acquiring data of the film scene projected by the projection equipment to obtain a corresponding film scene image and outputting the power supply scene image; the region identification device is connected with the scene acquisition device and used for receiving the power scene image, acquiring each gray value of each pixel point of the power scene image, determining whether each pixel point is an edge pixel point or not based on the deviation degree of the gray value of each pixel point to the gray value mean value of each pixel point in the neighborhood, acquiring each edge pixel point in the power scene image, forming an edge region in the power scene image based on each edge pixel point and each surrounding pixel point, the distance between each edge pixel point and each surrounding pixel point is less than or equal to the number of preset pixel points, and taking the power scene image stripped from the edge region as a non-edge region; the point number measuring equipment is connected with the region identification equipment and is used for receiving each edge region and each non-edge region in the power scene image, determining the number of noise pixel points in each edge region and the number of noise pixel points in each non-edge region, accumulating the number of noise pixel points in each edge region to obtain the total number of edge noise points, and accumulating the number of noise pixel points in each non-edge region to obtain the total number of non-edge noise points; a signal sending device connected to the point number measuring device, for calculating the total number of pixels constituting each edge region in the power scene image to obtain the total number of edge pixels, calculating the total number of pixels constituting each non-edge region in the power scene image to obtain the total number of non-edge pixels, dividing the total number of edge noise points by the total number of edge pixels to obtain an edge noise ratio, dividing the total number of non-edge noise points by the total number of non-edge pixels to obtain a non-edge noise ratio, and sending an edge processing trigger signal when the edge noise ratio exceeds the non-edge noise ratio, and sending a content processing trigger signal when the edge noise ratio is smaller than the non-edge noise ratio; the sequence processing equipment is respectively connected with the region identification equipment and the signal sending equipment and is used for carrying out corrosion-first expansion processing on the power supply scene image when the edge processing triggering signal is received so as to obtain a corrosion expansion image; the double-layer processing equipment is respectively connected with the area identification equipment and the signal sending equipment and is used for executing first-opening operation and then-closing operation processing on the power scene image when receiving the content processing trigger signal so as to obtain an opening and closing operation image; the data switching equipment is respectively connected with the sequence processing equipment and the double-layer processing equipment and is used for taking the received corrosion expansion image or the opening and closing operation image as a morphological processing image and outputting the data switching image; the level identification device is respectively connected with the static storage device and the data switching device and is used for receiving the data switching image, segmenting a plurality of human body profiles from the data switching image based on a human body gray level upper limit threshold value and a human body gray level lower limit threshold value, analyzing the action characteristics of each human body profile, and taking the intensity level corresponding to the reference action characteristics with the action characteristics coincidence percentage of each human body profile exceeding a limited amount as the intensity level of the human body profile in the reference action characteristics corresponding to each intensity level; in the level identification device, the maximum level in a plurality of violent levels respectively corresponding to a plurality of human body contours is used as the action level of the currently detected movie playing content, and the action level of the currently detected movie playing content is output; the voice playing device is connected with the level identification device and is used for receiving the action level of the currently detected movie playing content and playing the action level of the currently detected movie playing content; and the region identification equipment determines that the region identification equipment is a non-edge pixel point when the deviation degree from the gray value of the pixel point in the power scene image to the gray value mean value of each pixel point in the neighborhood does not exceed a limit.
More specifically, in the real-time alarm system for the air pressure borne by the shell: and when the deviation degree of the gray value of the pixel point in the power scene image to the gray value mean value of each pixel point in the neighborhood exceeds a limit amount, the region identification equipment determines that the pixel point is an edge pixel point.
More specifically, in the real-time alarm system for the air pressure borne by the shell: the air pressure alarm device comprises a voice playing chip and a light driving device, and the voice playing chip and the light driving device are connected with the pressure sensor.
More specifically, in the real-time alarm system for the air pressure borne by the shell: the voice playing chip is used for playing a voice alarm file corresponding to the exceeding of the air pressure when the real-time air pressure in the film examination room exceeds the limit;
and the light driving equipment carries out light driving operation of different colors based on the specific numerical value of the real-time air pressure in the film examination room.
Drawings
Embodiments of the invention will now be described with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural diagram of a scene acquisition device of a real-time alarm system for the pressure of a housing according to an embodiment of the invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
There are various types of film projectors, and these are generally classified into two major categories, fixed type and mobile type. Different projectors can be divided into 70 mm, 35 mm, 16 mm, 8.75 mm and 8 mm according to the width of the film to be projected. Projectors such as stereoscopic, panoramic, circular, dome, macroscreen and the like are also equipped for some special forms of movies.
The flat-disk type circulating large film disk is arranged behind the projector, can accommodate the film with the whole length, and can be displayed in the next scene without rewinding after the film is displayed. In order to simplify the operation, some mobile narrow film projectors are designed with automatic film threading devices in the film transport path, and some use film cassette insertion devices. Some narrow film projectors have a 16 grid/second speed device for projecting silent films.
In order to overcome the defects, the invention provides a real-time alarm method for the air pressure borne by the shell. The real-time air pressure bearing alarm system for the shell can effectively solve the corresponding technical problem.
Fig. 1 is a schematic structural diagram of a scene acquisition device of a real-time alarm system for the pressure of a housing according to an embodiment of the invention. The scene capture device includes a housing and a camera within the housing.
The real-time alarm system for the air pressure borne by the shell according to the embodiment of the invention comprises:
and the pressure sensor is arranged in the film examination room, is positioned on the shell of the projection equipment, and is used for sensing the real-time air pressure in the film examination room and outputting the real-time air pressure in the film examination room.
Next, a detailed description of the structure of the real-time alarm system for the pressure of the housing according to the present invention will be further described.
In the real-time alarm system of the air pressure born by the shell, the system further comprises:
and the air pressure alarm device is positioned on the shell of the projection device, is connected with the pressure sensor, and is used for receiving the real-time air pressure in the examination room and carrying out corresponding air pressure alarm operation when the real-time air pressure in the examination room exceeds the limit.
In the real-time alarm system of the air pressure born by the shell, the system further comprises:
the system comprises a frequency division duplex device which is connected with a remote content auditing server and used for receiving a violent grade database which is sent by the content auditing server at preset time intervals, wherein the violent grade database takes the violent grade as an index and stores the benchmark action characteristics corresponding to each violent grade.
In the real-time alarm system of the air pressure born by the shell, the system further comprises:
and the static storage equipment is connected with the frequency division duplex equipment, arranged in the film examination room and used for receiving and storing the violent grade database.
In the real-time alarm system of the air pressure born by the shell, the system further comprises:
the scene acquisition equipment is arranged in a film examining room, is positioned at one side of the static storage equipment, and is used for acquiring data of the film scene projected by the projection equipment to obtain a corresponding film scene image and outputting the power supply scene image;
the region identification device is connected with the scene acquisition device and used for receiving the power scene image, acquiring each gray value of each pixel point of the power scene image, determining whether each pixel point is an edge pixel point or not based on the deviation degree of the gray value of each pixel point to the gray value mean value of each pixel point in the neighborhood, acquiring each edge pixel point in the power scene image, forming an edge region in the power scene image based on each edge pixel point and each surrounding pixel point, the distance between each edge pixel point and each surrounding pixel point is less than or equal to the number of preset pixel points, and taking the power scene image stripped from the edge region as a non-edge region;
the point number measuring equipment is connected with the region identification equipment and is used for receiving each edge region and each non-edge region in the power scene image, determining the number of noise pixel points in each edge region and the number of noise pixel points in each non-edge region, accumulating the number of noise pixel points in each edge region to obtain the total number of edge noise points, and accumulating the number of noise pixel points in each non-edge region to obtain the total number of non-edge noise points;
a signal sending device connected to the point number measuring device, for calculating the total number of pixels constituting each edge region in the power scene image to obtain the total number of edge pixels, calculating the total number of pixels constituting each non-edge region in the power scene image to obtain the total number of non-edge pixels, dividing the total number of edge noise points by the total number of edge pixels to obtain an edge noise ratio, dividing the total number of non-edge noise points by the total number of non-edge pixels to obtain a non-edge noise ratio, and sending an edge processing trigger signal when the edge noise ratio exceeds the non-edge noise ratio, and sending a content processing trigger signal when the edge noise ratio is smaller than the non-edge noise ratio;
the sequence processing equipment is respectively connected with the region identification equipment and the signal sending equipment and is used for carrying out corrosion-first expansion processing on the power supply scene image when the edge processing triggering signal is received so as to obtain a corrosion expansion image;
the double-layer processing equipment is respectively connected with the area identification equipment and the signal sending equipment and is used for executing first-opening operation and then-closing operation processing on the power scene image when receiving the content processing trigger signal so as to obtain an opening and closing operation image;
the data switching equipment is respectively connected with the sequence processing equipment and the double-layer processing equipment and is used for taking the received corrosion expansion image or the opening and closing operation image as a morphological processing image and outputting the data switching image;
the level identification device is respectively connected with the static storage device and the data switching device and is used for receiving the data switching image, segmenting a plurality of human body profiles from the data switching image based on a human body gray level upper limit threshold value and a human body gray level lower limit threshold value, analyzing the action characteristics of each human body profile, and taking the intensity level corresponding to the reference action characteristics with the action characteristics coincidence percentage of each human body profile exceeding a limited amount as the intensity level of the human body profile in the reference action characteristics corresponding to each intensity level; in the level identification device, the maximum level in a plurality of violent levels respectively corresponding to a plurality of human body contours is used as the action level of the currently detected movie playing content, and the action level of the currently detected movie playing content is output;
the voice playing device is connected with the level identification device and is used for receiving the action level of the currently detected movie playing content and playing the action level of the currently detected movie playing content;
and the region identification equipment determines that the region identification equipment is a non-edge pixel point when the deviation degree from the gray value of the pixel point in the power scene image to the gray value mean value of each pixel point in the neighborhood does not exceed a limit.
In the real-time alarm system for the air pressure borne by the shell: and when the deviation degree of the gray value of the pixel point in the power scene image to the gray value mean value of each pixel point in the neighborhood exceeds a limit amount, the region identification equipment determines that the pixel point is an edge pixel point.
In the real-time alarm system for the air pressure borne by the shell: the air pressure alarm device comprises a voice playing chip and a light driving device, and the voice playing chip and the light driving device are connected with the pressure sensor.
In the real-time alarm system for the air pressure borne by the shell: the voice playing chip is used for playing a voice alarm file corresponding to the exceeding of the air pressure when the real-time air pressure in the film examination room exceeds the limit;
and the light driving equipment carries out light driving operation of different colors based on the specific numerical value of the real-time air pressure in the film examination room.
In addition, in the real-time alarm system for the air pressure borne by the shell: the FDD mode is characterized in that the system receives and transmits on two symmetrical frequency channels separated by (the up and down frequency is separated by 190MHz), and uses the protection frequency band to separate the receiving and transmitting channels, and simultaneously uses the technologies of packet switching, etc., which can break through the bottleneck of the second generation development, realize high-speed data service, improve the frequency spectrum utilization rate and increase the system capacity. FDD must provide third generation services using paired frequencies, i.e., within a bandwidth of every 2x5 MHz. The mode can fully utilize the uplink and downlink frequency spectrums when supporting the symmetric service, but the frequency spectrum utilization rate is greatly reduced (about 40 percent of the frequency spectrum utilization rate is reduced due to low uplink load) when the asymmetric packet switching (Internet) works, and in this regard, the TDD mode has incomparable advantages compared with the FDD mode.
By adopting the real-time alarm system for the air pressure borne by the shell, aiming at the technical problems that the projection equipment in the prior art is not high in reliability and the action degree of playing data cannot be effectively identified, the real-time air pressure borne by the shell of the projection equipment is measured so as to carry out different alarm operations based on the real-time air pressure, and the reliability of the projection equipment is improved; the action level of the currently detected movie playing content is subjected to on-site analysis in an automatic analysis mode, so that the eyes of movie inspectors are prevented from being damaged; by utilizing the characteristics that the performance of eliminating edge noise by corrosion expansion processing is superior to that of opening and closing operation processing and the detail of the protection target by opening and closing operation processing is superior to that of corrosion expansion processing, on the basis of analyzing the noise distribution condition of an image, a morphological processing mechanism based on the image content characteristics is set up, and various defects caused by the original rigid image processing mechanism are overcome, so that the technical problems are solved.
It is to be understood that while the present invention has been described in conjunction with the preferred embodiments thereof, it is not intended to limit the invention to those embodiments. It will be apparent to those skilled in the art from this disclosure that many changes and modifications can be made, or equivalents modified, in the embodiments of the invention without departing from the scope of the invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (3)
1. A real-time alarm method for the air pressure borne by a shell, which comprises the step of using a real-time alarm system for the air pressure borne by the shell to alarm the air pressure in real time, and is characterized in that the real-time alarm system for the air pressure borne by the shell comprises the following steps:
the pressure sensor is arranged in the film examination room, is positioned on the shell of the projection equipment, and is used for sensing the real-time air pressure in the film examination room and outputting the real-time air pressure in the film examination room;
the air pressure alarm device is positioned on the shell of the projection device, is connected with the pressure sensor and is used for receiving the real-time air pressure in the examination room and carrying out corresponding air pressure alarm operation when the real-time air pressure in the examination room exceeds the limit;
the system comprises a frequency division duplex device, a remote content auditing server and a database management server, wherein the frequency division duplex device is connected with the remote content auditing server and is used for receiving a violent grade database sent by the content auditing server at preset time intervals, and the violent grade database takes violent grades as an index and stores reference action characteristics corresponding to each violent grade;
the static storage equipment is connected with the frequency division duplex equipment, arranged in the film examination room and used for receiving and storing the violent grade database;
the scene acquisition equipment is arranged in a film examining room, is positioned at one side of the static storage equipment, and is used for acquiring data of the film scene projected by the projection equipment to obtain a corresponding film scene image and outputting the film scene image;
the area identification equipment is connected with the scene acquisition equipment and used for receiving the movie scene image, acquiring each gray value of each pixel point of the movie scene image, determining whether each pixel point is an edge pixel point or not based on the deviation degree of the gray value of each pixel point to the gray value mean value of each pixel point in the neighborhood, acquiring each edge pixel point in the movie scene image, forming an edge area in the movie scene image based on each edge pixel point and each surrounding pixel point, the distance between each edge pixel point and each surrounding pixel point is less than or equal to the number of preset pixel points, and taking the movie scene image stripped from the edge area as a non-edge area;
the point number measuring equipment is connected with the area identification equipment and is used for receiving each edge area and each non-edge area in the movie scene image, determining the number of noise pixel points in each edge area and the number of noise pixel points in each non-edge area, accumulating the number of noise pixel points in each edge area to obtain the total number of edge noise points, and accumulating the number of noise pixel points in each non-edge area to obtain the total number of non-edge noise points;
a signal sending device connected to the point number measuring device, for calculating the total number of pixels constituting each edge region in the movie scene image to obtain the total number of edge pixels, calculating the total number of pixels constituting each non-edge region in the movie scene image to obtain the total number of non-edge pixels, dividing the total number of edge noise points by the total number of edge pixels to obtain an edge noise ratio, dividing the total number of non-edge noise points by the total number of non-edge pixels to obtain a non-edge noise ratio, and sending an edge processing trigger signal when the edge noise ratio exceeds the non-edge noise ratio, and sending a content processing trigger signal when the edge noise ratio is smaller than the non-edge noise ratio;
the sequence processing equipment is respectively connected with the region identification equipment and the signal sending equipment and is used for carrying out erosion-first expansion processing on the movie scene image when the edge processing triggering signal is received so as to obtain an erosion expansion image;
the double-layer processing equipment is respectively connected with the area identification equipment and the signal sending equipment and is used for executing first-opening operation and then-closing operation processing on the movie scene image when receiving the content processing trigger signal so as to obtain an opening-closing operation image;
the data switching equipment is respectively connected with the sequence processing equipment and the double-layer processing equipment and is used for taking the received corrosion expansion image or the opening and closing operation image as a morphological processing image and outputting the data switching image;
the level identification device is respectively connected with the static storage device and the data switching device and is used for receiving the data switching image, segmenting a plurality of human body profiles from the data switching image based on a human body gray level upper limit threshold value and a human body gray level lower limit threshold value, analyzing the action characteristics of each human body profile, and taking the intensity level corresponding to the reference action characteristics with the action characteristics coincidence percentage of each human body profile exceeding a limited amount as the intensity level of the human body profile in the reference action characteristics corresponding to each intensity level; in the level identification device, the maximum level in a plurality of violent levels respectively corresponding to a plurality of human body contours is used as the action level of the currently detected movie playing content, and the action level of the currently detected movie playing content is output;
the voice playing device is connected with the level identification device and is used for receiving the action level of the currently detected movie playing content and playing the action level of the currently detected movie playing content;
and the region identification equipment determines that the pixel points in the movie scene image are non-edge pixel points when the deviation degree from the gray value of the pixel point to the gray value mean value of each pixel point in the neighborhood of the pixel point does not exceed a limit.
2. The method of claim 1, wherein:
and when the deviation degree of the gray value of the pixel point in the movie scene image to the gray value mean value of each pixel point in the neighborhood exceeds a limit amount, the region identification equipment determines that the pixel point is an edge pixel point.
3. The method of claim 1, wherein:
the air pressure alarm device comprises a voice playing chip and a light driving device, and the voice playing chip and the light driving device are connected with the pressure sensor.
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| 基于内容的暴力视频检索;屈有政;《中国优秀硕士学位论文全文数据库（信息科技辑）》;20110915;I138-1046 * |
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| CN109883609A (en) | 2019-06-14 |
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