Device for integrating multi-screen signals of SAM system in real time through split-screen repeating

Abstract

The utility model discloses a device for integrating multi-screen signals of an SAM system in real time through split-screen repeating, which comprises a power supply module, a video exchange module, a network communication module, a video output module, a coding and decoding module, a main control module and a storage module, and the main control module is connected with the coding and decoding module, the network communication module and the storage module. The video output module is connected through the coding and decoding module, and the two-way video exchange module is connected through the coding and decoding module; and the power supply module is connected with each module through a power supply line to supply power. According to the utility model, by using a split-screen repeating mode, under the condition that a closed system is not accessed, video streams output by the system are accessed only through the HDMI interface, the output of the closed system is multiplexed by copying the video streams, one part is output to the input end of the original HDMI interface in the original way, and the other part is spliced by the master control; and integrated output of multi-screen signals of the closed system is completed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to railway signal display field, specifically a kind of device for real-time integration SAM system multi-screen signal by split screen. BACKGROUND

[0002] Route signal data is important data for daily operation of railway station, and the state of each track section, turnout, signal and its corresponding button in the station is dynamically displayed in real time.Most of the businesses in the daily operation of the railway station are related to route signal data.The route signal data can reflect the incoming train situation of the corresponding track in real time, and is crucial for the safety warning work of the track section in the station.

[0003] Currently, the traditional safety warning work in the station mainly relies on the control of the duty officer, and the track where the train will enter is reminded by broadcasting.Due to the high speed of the train, the reminder of the duty officer cannot be reminded in the first time due to personal reasons, and such reminder is often not timely and accurate, which brings hidden dangers to the safety of the station personnel.

[0004] After searching, in the field of railway signal analysis, in the patent with application number CN202411249601, the hardware indicators of the screen itself are detected by split screen display means, which is irrelevant to the analysis of the content on the screen.In the patents with application numbers CN202410235570, CN202411066669 and CN202410345508, the main purpose of using various technologies to analyze the screen color is to correct the screen display color, which is also irrelevant to the content of the screen itself. INVENTION CONTENT

[0005] The utility model proposes a device suitable for video signal acquisition, display, integration and output of multi-screen SAM signal system in view of the problems in the background art.The device mainly copies the video stream output to the duty officer by split screen display without affecting the work of the duty officer, provides a signal to the image acquisition equipment, captures the HDMI signal of SAM display interface by the image acquisition equipment, converts it into video signal in real time and pushes the video stream to the image recognition edge computing intelligent host.The scheme provides a reliable access for automatic warning work by recognizing SAM system signal through artificial intelligence method.

[0006] TECHNICAL SCHEME

[0007] A device for real-time integration of SAM system multi-screen signal by split screen display, comprising a power module, a video exchange module, a network communication module, a video output module, a coding and decoding module, a main control module and a storage module.

[0008] The power module mainly comprises a hot plug circuit and a DC-DC voltage conversion circuit, the hot plug circuit allows the power supply to be safely inserted and taken out, and the DC-DC voltage conversion circuit can convert the input 12V DC voltage to 5V and 3.3V voltages to supply power to each module. The power module is connected to the master control module, the storage module, the encoding and decoding module, the video switching module, the network communication module and the video output module through power supply lines respectively.

[0009] The main functions of the master control module mainly include providing a configuration preview page which can be accessed through an internal network connection, a user can log in to configure user information, the original relative relationship of each video stream can be configured, the code rate, frame rate and encoding mode of video stream encoding can be configured, etc. The user can preview the video signals of two video streams and the video signal after integration through the page. The splicing of the two video streams is also completed in the master control module.

[0010] The storage module is directly connected with the master control module using a ROM, wherein only the device configuration, the device driver and the data related to the configuration page are stored, and no video data is stored.

[0011] The encoding and decoding module mainly comprises a video hardware encoder and a video hardware decoder. The main function is to decode the input video stream and encode the output video data.

[0012] The video switching module comprises a video capture module and a video output module. The external video input is connected to the HDMI input end through the HDMI interface, the video capture module captures the video stream data through the HDMI interface, and a copy of the video stream data is made, wherein the original data is directly output to the HDMI output end through the video output module, and the copied video stream data is transmitted to the master control module for splicing processing.

[0013] The network communication module mainly comprises an Ethernet module, the device is connected to a network device such as a router or a switch through a network cable, the user logs in to the configuration page through a webpage to make necessary configuration, the master control module generates configuration storage to the storage module. When the video is integrated, the master control module reads the configuration from the storage module, and splices according to the configuration.

[0014] The main function of the video output module is video output, the module receives the video code stream transmitted from the encoder, and outputs through the HDMI interface, which can be output to a screen for display or a smart computing terminal for subsequent integration and calculation.

[0015] The utility model discloses the beneficial effect

[0016] The utility model mainly solves the signal analysis problem of closed system. Through using the way of split screen repeating, in the case of not accessing closed system, only through HDMI interface access system output video stream, through the duplication of video stream, the output of closed system is multiplexed, one part is output to the original HDMI interface input, and one part is spliced by the master control, which completes the integration output of closed system multi-screen signal.

[0017] The main purpose of the utility model is to provide accurate signals in the closed system for downstream tasks, to intelligently expand and develop the system function without accessing the closed system through the system level interface, and to provide customized services for the users of the system. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a device comprehensive processing plate framework.

[0019] Figure 2 It is a device backboard schematic view. DETAILED DESCRIPTION

[0020] The utility model will be further described below in combination with examples, but the protection scope of the utility model is not limited to this:

[0021] In combination Figure 1 A device for real-time integration of SAM system multi-screen signal through split screen repeating, comprising a power module, a video exchange module, a network communication module, a video output module, a coding and decoding module, a master control module and a storage module.

[0022] The power module mainly comprises a hot plug circuit and a DC-DC voltage conversion circuit. The hot plug circuit allows the power supply to be safely inserted and removed. The DC-DC voltage conversion circuit can convert the input 12V DC voltage to 5V and 3.3V voltage to power each module. The power module is connected to the master control module, the storage module, the coding and decoding module, the video exchange module, the network communication module and the video output module through the power supply line for power supply.

[0023] The main functions of the master control module include providing a configuration preview page that can be accessed through the internal network connection, the user can log in to configure the user information, can configure the original relative relationship of each video stream, configure the code rate, frame rate and coding mode of video stream coding, etc. The user can preview the video signals of two video signals and the integrated video signal through the page. The splicing of two videos is also completed in the master control module.

[0024] The storage module uses ROM and is directly connected to the master control module. Only the device configuration and the device itself driver program and the configuration page related data are stored, and no video data is stored.

[0025] The codec module mainly includes a video hardware encoder and a video hardware decoder. The main function is to decode the input video stream and encode the output video data.

[0026] The video switching module includes a video capture module and a video output module. The external video input is connected to the HDMI input terminal through the HDMI interface. The video capture module captures the video stream data through the HDMI interface and copies one copy of the video stream data. The original data is directly output to the HDMI output terminal through the video output module, and the copied video stream data is transmitted to the host module for splicing processing.

[0027] The network communication module mainly includes an Ethernet module. The device is connected to a network device such as a router or a switch through a network cable. The user logs in to the configuration page through a web page to perform necessary configuration. The host module generates configuration storage to the storage module. When performing video integration, the host module reads the configuration from the storage module and splices according to the configuration.

[0028] The main function of the video output module is video output. The module receives the video stream transmitted from the encoder and outputs through the HDMI interface. It can be output to the screen for display or the intelligent computing terminal for subsequent integration and calculation.

[0029] Figure 2 The backplane diagram of the device is given, wherein: mark 1 is a 12V DC input port, marks 2 and 4 are HDMI input ports, marks 3, 5 and 6 are HDMI output ports, marks 7, 8, 9 and 11 are module indicator lights, and mark 10 is an Ethernet interface.

[0030] The 12V voltage input line of the power module is connected with the 12V power line in the backplane unit. The input line of the hot plug circuit is used as the 12V voltage input line of the power module. The output line of the hot plug circuit is connected with the input line of the DC-DC voltage conversion circuit. The pin 2 of the main chip LTC1422 in the hot plug circuit is the 12V voltage input, and the pin 7 is the 12V voltage output, which is connected with the pin 7 of the main chip TPS5420 in the DC-DC voltage conversion circuit. The pin 8 of TPS5420 is a 5V output voltage, which is connected with the pin 3 and the pin 4 of the TPS76833QDRG4 chip. The pin 5 and the pin 6 of the TPS76833QDRG4 chip output a 3.3V voltage. The 3.3V output line of the DC-DC voltage conversion circuit is connected with the voltage input lines of the six modules including the host module, the storage module, the video codec module, the Ethernet module and the video output module.

[0031] The comprehensive processing board preferably uses the comprehensive video processing platform developed by the domestic HiSilicon Hi3516A. The host module uses CortexTM -A7 core, 700MHz, supports Neon acceleration; hardware video codec module is a Hi3516A integrated functional module, supports 1080P@60fps high-definition video H.265 encoding; the Ethernet module selects an RTL8211E chip of a Realtek company; the video input and output interface adopts an HDMI interface, and supports an HDMI2.0 protocol.

[0032] After the master control module obtains the two video signals, the relative position relationship of the two video signals is obtained according to a configuration file, the manner (up and down, left and right) of splicing the two video signals is determined, and the adjacent video boundaries during splicing are determined; the best splicing seam at the boundaries and the size of the image after splicing are calculated through an image algorithm, a splicing base map of the corresponding size is generated, the two video pictures are segmented and cropped according to the seam position, the pictures after the segmentation and cropping are pasted on the splicing base map according to the position, and the image splicing work is completed. After the splicing is completed, the image is pushed to a video encoder for encoding, the image data is converted into display data, and the display data is output through an HDMI port.

[0033] Those skilled in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing the related hardware through circuit setting, and the circuit setting can be completed by a single-chip microcomputer or other similar functional integrated chips, which is prior art. The core of the utility model is the overall structure layout of the system, and the local control method can be completed by programming of the prior art; the local module connection can be realized by the prior art.

[0034] In the present application, the technical means is to connect the modules, without connecting the closed system, only through the video stream output by the HDMI interface, to copy the video stream, to multiplex the output of the closed system, one part is output to the original HDMI interface input, and one part is spliced by the master control, to complete the integration and output of the multi-screen signal of the closed system. In the above technical means: each module itself belongs to the prior art, and the individual functions (such as: user information configuration of the master control module, splicing of the video stream data; video stream data copying of the video acquisition module; encoding and decoding of the encoding and decoding module; configuration and information transmission of the network communication module) that can be realized by each module are also prior art; the core innovation point of the utility model is the connection logic of the modules: one part is output to the original HDMI interface input, and one part is spliced by the master control, to realize the purpose of real-time integration of the multi-screen signal of the SAM system. The present application realizes the display of the multi-screen signal of the SAM system on one hand; on the other hand, it provides a reliable access for the automatic early warning work of recognizing the SAM system signal through the artificial intelligence method, that is, it provides a data input source for the subsequent artificial intelligence recognition. In the above process, no artificial intelligence method is involved, and it belongs to the protection object of the utility model.

[0035] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. An apparatus for displaying a multi-screen signal of a real-time integrated SAM system through split screen, characterized in that It includes power module, video switching module, network communication module, video output module, codec module, main control module and storage module, The main control module is connected with the codec module, the network communication module and the storage module, and the main control module is connected with the video output module through the codec module; a VDMA submodule in the main control module is connected with two video switching modules using an AXI interface; The power module is connected with the main control module, the storage module, the codec module, the video switching module, the network communication module and the video output module through power supply lines.

2. The apparatus of claim 1, wherein The codec module includes a video hardware encoder and a video hardware decoder, which performs video decoding on the input video stream and video encoding on the output video data.

3. The apparatus of claim 1, wherein The storage module is directly connected with the main control module using a ROM.

4. The apparatus of claim 1, wherein The video switching module includes a video capture module and a video output module, external video input is connected to an HDMI input end through an HDMI interface, the video capture module collects video stream data through the HDMI interface, and a copy of the video stream data is made, wherein the original data is directly output to an HDMI output end through the video output module, and the copied video stream data is transmitted to the main control module for splicing processing.

5. The apparatus of claim 1, wherein The network communication module includes an Ethernet module, and the device is connected with a network device of a router or a switch through a network cable.

6. The apparatus of claim 1, wherein The video output module receives the video stream transmitted from the codec module and outputs through an HDMI interface.

7. The apparatus of claim 1, wherein The video output module is output to a screen for display or a smart computing terminal for subsequent integrated calculation.

8. The apparatus of claim 1, wherein The power module includes a hot plug circuit and a DC-DC voltage conversion circuit, the hot plug circuit allows the power supply to be safely inserted and removed, and the DC-DC voltage conversion circuit converts the input 12V DC voltage to 5V and 3.3V voltage for power supply of each module.

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