CN108377404B - Intelligent network-connected automobile multi-network media screen system - Google Patents
Intelligent network-connected automobile multi-network media screen system Download PDFInfo
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- CN108377404B CN108377404B CN201810452626.4A CN201810452626A CN108377404B CN 108377404 B CN108377404 B CN 108377404B CN 201810452626 A CN201810452626 A CN 201810452626A CN 108377404 B CN108377404 B CN 108377404B
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- 238000004891 communication Methods 0.000 claims description 48
- 238000005070 sampling Methods 0.000 claims description 35
- 238000006243 chemical reaction Methods 0.000 claims description 31
- 230000000087 stabilizing effect Effects 0.000 claims description 9
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 6
- 229910052744 lithium Inorganic materials 0.000 claims description 6
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 230000005236 sound signal Effects 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 238000003032 molecular docking Methods 0.000 claims description 2
- 238000011161 development Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 2
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- 238000005259 measurement Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
- H04N21/41422—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance located in transportation means, e.g. personal vehicle
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
- H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
- H04N21/6131—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via a mobile phone network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Controls And Circuits For Display Device (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
With the development of intelligent internet-connected automobiles, people can freely and safely do other things including entertainment in the sitting and driving processes. The biggest change is entertainment system, no matter how long the journey is, mainly provides auditory entertainment through radio stations and vehicle-mounted sound equipment, but can not watch and especially watch media information, television and movies in real time, so that the invention has no deep development on the aspect, and aims to provide an intelligent network-connected automobile multi-network media screen which is used for solving the problems of insufficient stability, instantaneity and reliability when receiving the media information.
Description
Technical Field
The invention relates to the technical field of broadcast television, in particular to an intelligent network-connected automobile multi-network media screen.
Background
With the development of intelligent internet-connected automobiles, people can freely and safely do other things including entertainment in the sitting and driving processes. The biggest change is entertainment system, no matter how long the journey is, the entertainment in hearing is mainly provided through radio stations and vehicle-mounted sound equipment, but the entertainment cannot be watched, especially in real time, to watch media information, television and movies, therefore, no deep development is carried out on the aspects, and for modern people, services such as media information, television receiving and the like provided on intelligent network automobiles are required to be watched stably in real time, so that higher experience requirements are met.
Disclosure of Invention
The invention aims to provide an intelligent network-connected automobile multi-network media screen which is used for solving the problems of insufficient stability, instantaneity and reliability when receiving media information. In order to overcome the defects, the intelligent network-connected automobile multimedia screen disclosed by the invention comprises a network module, an environment sampling module, a communication receiving module, a conversion module, a DTMB receiving antenna, a digital set top box, a route selecting module, a display module, a power module and an intelligent network-connected interface, wherein the purpose of reliable operation of live television broadcasting and environment sampling is achieved; the intelligent network connection port is composed of a 5V power supply connection point, a 12V power supply connection point, a 24V power supply connection point, an HDMI high-definition interface, a VGA image display interface, an AUDIO-3.5MM AUDIO interface and a public ground wire connection point which are sequentially arranged from left to right; the power module consists of an LDO-5V voltage stabilizing circuit, an LDO-12V voltage stabilizing circuit, a 24V12AH lithium battery and a 24V expansion battery interface, and mainly aims to provide a 5V power supply for the communication receiving module and the conversion module, a 12V power supply for the network module, the environment sampling module, the digital set top box, the routing module and the display module, and a 24V power supply for the DTMB receiving antenna; the environment sampling module consists of a camera and a front-end server; the input end of the conversion module is a MicroUSB interface, and the output end is an HDMI high-definition interface, a VGA image display interface and an AUDIO-3.5MM AUDIO interface; the input end of the display module is an HDMI high-definition interface, a VGA image display interface and an AUDIO-3.5MM AUDIO interface, and the output end is an HDMI high-definition interface, a VGA image display interface and an AUDIO-3.5MM AUDIO interface; the path selecting module is provided with an A path input end and a B path input end, each path input end is provided with an HDMI high-definition interface, a VGA image display interface and an AUDIO-3.5MM AUDIO interface, and each path input end is provided with an output end which is provided with the HDMI high-definition interface, the VGA image display interface and the AUDIO-3.5MM AUDIO interface, and automatic switching is adopted; the network module has four network accesses, namely RJ45 interface broadband WAN access, TDD-LTE 4G network access, FDD-LTE 4G network access and WCDMA 3G network access; the network module, the communication receiving module and the conversion module are connected in series in sequence and then connected with the input end A of the routing module, the DTMB receiving antenna and the digital set top box are connected in series and then connected with the input end B of the routing module, and the output end of the routing module is connected with the display module in series; the network module, the communication receiving module, the conversion module, the routing module and the display module are sequentially connected in series to form a secondary channel; the DTMB receiving antenna, the digital set top box, the routing module and the display module are sequentially connected in series to form a main channel; the environment sampling module, the network module, the communication receiving module, the conversion module, the routing module and the display module are sequentially connected in series to form an environment sampling channel.
The technical principle of the present invention and specific modules thereof will now be described. In the system, the network module mainly aims at providing a stable signal link for the communication receiving module and the environment sampling module, the purpose of acquiring signals from a central vision platform as backup signals is realized by utilizing a broadband Internet, the connectivity of the signal link is critical, the condition that the signal link is suitable for different use places and signal intensity changes in different spaces is considered, a Hua-Chen B315 router is used as a module core, the network module has four network access modes, namely, the network access mode is based on RJ45 interface broadband WAN access, the network access mode is based on TDD-LTE 4G network access, the network access mode is based on FDD-LTE 4G network access and the network access mode is based on WCDMA 3G network, the actual selection of the use places is matched, the access mode with the maximum speed is selected after the test of the use places, and the downlink of the selected access mode is higher than 20Mbps and the time delay is lower than 50ms. The communication receiving module selects an android system structure, and simultaneously requires more than 128G to exist, and the communication receiving module mainly plays a role in running appointed application software including a central view APP, decoding image and audio and outputting the decoded image and audio through a MicroUSB interface, and is stable in actual measurement operation and very high in overall reliability. The conversion module is mainly used for converting signals output by the MicroUSB interface into output signals of an HDMI high-definition interface, a VGA image display interface and an AUDIO-3.5MM AUDIO interface for docking with the back-end equipment. The environment sampling module consists of a camera, a vertical lifting cradle head and a front-end server, and uses a Dahua H.265,600 ten thousand pixel network camera to simultaneously install a Dahua APP application software on the communication receiving module, and the environment sampling module mainly has the effects that a shot image is transmitted to the communication receiving module through WIFI, and the communication receiving module outputs an image through a MicroUSB interface for signal selection after installing the Dahua APP; the main function of the power module is to provide 5V power required by the communication receiving module and the conversion module, 12V power required by the network module, the environment sampling module, the digital set top box, the route selecting module and the display module, 24V power required by the DTMB receiving antenna, a 24V12AH lithium battery pack and a battery pack expansion interface are built in the power module, the power EMI performance is improved by using the LDO voltage reduction and stabilizing circuit structure, and the power module can provide the whole system to run for more than 4 hours under the state of stopping and power failure.
When the system operates, a main channel is used for providing a signal source by DTMB space signals, outputting the signal source to a route selection module through a DTMB receiving antenna and a digital set top box, a display module monitors the signals and provides three interfaces, namely an HDMI high-definition interface, a VGA image display interface and an AUDIO-3.5MM AUDIO interface, so as to meet the connection requirements of different back-end devices including a front projector, and the main channel is used for providing image AUDIO signals for the back-end devices in a normal state. The secondary channel is provided with a broadband internet channel by the network module so as to ensure smooth connection of the link of the central vision platform, the communication receiving module starts the application software to use the central vision APP, and after the target channel and the image definition are selected, signals output by the MicroUSB interface of the communication receiving module are output to the routing module after passing through the conversion module. When the main channel is abnormal, the channel selection module is used for automatically switching to the secondary channel, and the signal is restored to be smooth.
The environment sampling channel is mainly used for shooting and collecting images of a use place, and when the environment sampling channel runs, application software of the communication receiving module is started, the application software is used for enabling the APP to select the definition of the images, then the images are output through a MicroUSB interface, and the images are output to the routing module after being converted by the conversion module. The operation is completed by manually switching to the secondary channel when it is necessary to output the use place image to the back-end device.
The intelligent network-connected automobile multi-network media screen has the beneficial effects that the intelligent network-connected automobile multi-network media screen is provided, the defects of stability and reliability in the traditional mode are overcome, services such as media information, television receiving and the like provided on the intelligent network-connected automobile can be synchronously watched and stably watched in real time, higher experience requirements are met, and the aim of monitoring front projection of an environment sampling output image is fulfilled.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a diagram of a multi-network media screen of an intelligent network-connected automobile
Description of the reference numerals
In fig. 1: 11. the system comprises an environment sampling module, a network module, a communication receiving module, a conversion module, a routing module, a display module, a rear end, a DTMB receiving antenna, a digital set top box and a power module, wherein the environment sampling module, the network module, the communication receiving module, the conversion module, the routing module, the display module, the rear end, the DTMB receiving antenna, the digital set top box and the power module.
Detailed Description
A description will now be made of a system scheme by taking an operation as an example. The main signal is received by a DTMB receiving antenna through a DTMB space signal, and is demodulated by a digital set top box 19 to output two signals of an HDMI high-definition interface and an AV video-audio interface, and the signals are provided for a front projector of a vehicle. Since the DTMB spatial signal varies due to environmental influence while traveling, it is necessary to establish a secondary signal path.
The intelligent network connection automobile multi-network media screen comprises a network module 12, an environment sampling module 11, a communication receiving module 13, a conversion module 14, a DTMB receiving antenna 18, a digital set top box 19, a route selection module 15, a display module 16, a power supply module 20 and an intelligent network connection interface; the intelligent network connection port is composed of a 5V power supply connection point, a 12V power supply connection point, a 24V power supply connection point, an HDMI high-definition interface, a VGA image display interface, an AUDIO-3.5MM AUDIO interface and a public ground wire connection point which are sequentially arranged from left to right; the power module 20 consists of an LDO-5V voltage stabilizing circuit, an LDO-12V voltage stabilizing circuit, a 24V12AH lithium battery and a 24V expansion battery interface, and mainly aims to provide 5V power for the communication receiving module 13 and the conversion module 14, provide 12V power for the network module 12, the environment sampling module 11, the digital set top box 19, the routing module 15 and the display module 16, and provide 24V power for the DTMB receiving antenna 18; the environment sampling module 11 consists of a camera, a vertical lifting cradle head and a front-end server; the input end of the conversion module 14 is a MicroUSB interface, and the output end is an HDMI high-definition interface, a VGA image display interface and an AUDIO-3.5MM AUDIO interface; the input end of the display module 16 is an HDMI high-definition interface, a VGA image display interface and an AUDIO-3.5MM AUDIO interface, and the output end is an HDMI high-definition interface, a VGA image display interface and an AUDIO-3.5MM AUDIO interface; the path selecting module 15 is provided with an A path input end and a B path input end, each path input end is provided with an HDMI high-definition interface, a VGA image display interface and an AUDIO-3.5MM AUDIO interface, and each path input end is provided with an output end which is provided with an HDMI high-definition interface, a VGA image display interface and an AUDIO-3.5MM AUDIO interface, and automatic switching is adopted; the network module 12 has four network accesses, namely RJ45 interface broadband WAN access, TDD-LTE 4G network access, FDD-LTE 4G network access and WCDMA 3G network access; the network module 12, the communication receiving module 13 and the conversion module 14 are connected in series in sequence and then connected with the input end A of the route selecting module 15, the DTMB receiving antenna 18 and the digital set top box 19 are connected in series and then connected with the input end B of the route selecting module 15, and the output end of the route selecting module 15 is connected in series with the display module 16; the network module 12, the communication receiving module 13, the conversion module 14, the routing module 15 and the display module 16 are sequentially connected in series to form a secondary channel; the DTMB receiving antenna 18, the digital set top box 19, the routing module 15 and the display module 16 are sequentially connected in series to form a main channel; the environment sampling module 11, the network module 12, the communication receiving module 13, the conversion module 14, the routing module 15 and the display module 16 are sequentially connected in series to form an environment sampling channel.
In the system, the network module 12 mainly serves to provide a stable signal link for the communication receiving module 13 and the environment sampling module 11, the purpose of obtaining signals from a central vision platform as backup signals is achieved by utilizing a broadband internet, the connectivity of the signal link is critical, the condition that the signal link is suitable for different use places and the signal strength change in different spaces is considered, a Hua-as-B315 router is used as a module core, the network module 12 has four network access modes, namely, an RJ45 interface broadband WAN access mode, a TDD-LTE 4G network access mode, an FDD-LTE 4G network access mode and a WCDMA 3G network access mode, the access mode is selected according to the actual selection of the use places, the maximum rate access mode is selected after the test of the use places, and the downlink of the selected access mode is higher than 20Mbps, and the time delay is lower than 50ms. The communication receiving module 13 selects an android system structure, and simultaneously more than 128G is required to exist, the communication receiving module 13 mainly plays a role in running appointed application software including a central view APP and a cereal bean APP, and the communication receiving module decodes image and audio and outputs the image and audio through a MicroUSB interface, and is stable in actual measurement operation and very high in overall reliability. The conversion module 14 mainly converts signals output by the micro usb interface into output signals of an HDMI high definition interface, a VGA image display interface and an AUDIO-3.5MM AUDIO interface for interfacing with the back-end 17 device. The environment sampling module 11 consists of a camera, a vertical lifting cradle head and a front-end server, uses a Dahua H.265,600 ten thousand pixel network camera, installs Dahua APP application software on the communication receiving module 13, and mainly has the effects of transmitting a shot image to the communication receiving module 13 through WIFI, and outputting an image through a MicroUSB interface for signal selection by the path selecting module 15 after the communication receiving module 13 installs the Dahua APP; the main function of the power module 20 is to provide 5V power required by the communication receiving module 13 and the converting module 14, 12V power required by the network module 12, the environment sampling module 11, the digital set top box 19, the routing module 15 and the display module 16, 24V power required by the DTMB receiving antenna 18, a 24V12AH lithium battery pack and a battery pack expansion interface are built in the power module 20, the power EMI performance is improved by using an LDO voltage reduction and stabilizing circuit structure, and the power module 20 can provide a whole set of system to run for more than 4 hours in a parking power-off state.
When the system is in operation, a main channel is used for providing a signal source by a DTMB space signal, outputting the signal source to the route selection module 15 through the DTMB receiving antenna 18 and the digital set top box 19, the display module 16 monitors the signal and provides three interfaces, namely an HDMI high-definition interface, a VGA image display interface and an AUDIO-3.5MM AUDIO interface, so as to meet the connection requirements of different back-end 17 devices including a front projector, and the main channel is used for providing image AUDIO signals for the back-end 17 devices in a normal state. The secondary channel is provided with a broadband internet channel by the network module 12 so as to ensure smooth connection of a link of the central vision platform, the communication receiving module 13 starts the application software to use the central vision APP, and after the target channel and the image definition are selected, signals output by the MicroUSB interface of the communication receiving module 13 are output to the routing module 15 after passing through the conversion module 14. When the main channel is abnormal, the channel selection module 15 is used for automatically switching to the secondary channel, and the signal is restored to be smooth.
The environment sampling channel is mainly used for the pairUse placeAnd shooting and collecting point images, starting application software of the communication receiving module 13 when running, selecting image definition by using the APP, outputting the images through a MicroUSB interface, and outputting the images to the routing module 15 after passing through the conversion module 14. The manual switch to the secondary channel complete operation is performed when it is necessary to output the use place image to the back-end 17 device.
The intelligent network-connected automobile multi-network media screen can simultaneously realize stable watching in real time with low input of services such as media information, television receiving and the like provided on the intelligent network-connected automobile, meets higher experience requirements, and simultaneously realizes the purpose of monitoring front projection of an environment sampling output image.
Claims (1)
1. The intelligent network connection automobile multi-network media screen system is characterized by comprising a network module, an environment sampling module, a communication receiving module, a conversion module, a DTMB receiving antenna, a digital set top box, a routing module, a display module, a power module and an intelligent network connection interface; the intelligent network connection port is composed of a 5V power supply connection point, a 12V power supply connection point, a 24V power supply connection point, an HDMI high-definition interface, a VGA image display interface, an AUDIO-3.5MM AUDIO interface and a public ground wire connection point which are sequentially arranged from left to right; the power module consists of an LDO-5V voltage stabilizing circuit, an LDO-12V voltage stabilizing circuit, a 24V12AH lithium battery and a 24V expansion battery interface, and is used for providing a 5V power supply for the communication receiving module and the conversion module, providing a 12V power supply for the network module, the environment sampling module, the digital set top box, the routing module and the display module, and providing a 24V power supply for the DTMB receiving antenna; the environment sampling module consists of a camera, a vertical lifting cradle head and a front-end server; the input end of the conversion module is a MicroUSB interface, and the output end is an HDMI high-definition interface, a VGA image display interface and an AUDIO-3.5MM AUDIO interface; the input end of the display module is an HDMI high-definition interface, a VGA image display interface and an AUDIO-3.5MM AUDIO interface, and the output end is an HDMI high-definition interface, a VGA image display interface and an AUDIO-3.5MM AUDIO interface; the path selecting module is provided with an A path input end and a B path input end, each path input end is provided with an HDMI high-definition interface, a VGA image display interface and an AUDIO-3.5MM AUDIO interface, and each path input end is provided with an output end which is provided with the HDMI high-definition interface, the VGA image display interface and the AUDIO-3.5MM AUDIO interface, and automatic switching is adopted; the network module has four network accesses, namely RJ45 interface broadband WAN access, TDD-LTE 4G network access, FDD-LTE 4G network access and WCDMA 3G network access; the network module, the communication receiving module and the conversion module are connected in series in sequence and then connected with the input end A of the routing module, the DTMB receiving antenna and the digital set top box are connected in series and then connected with the input end B of the routing module, and the output end of the routing module is connected with the display module in series; the network module, the communication receiving module, the conversion module, the routing module and the display module are sequentially connected in series to form a secondary channel; the DTMB receiving antenna, the digital set top box, the routing module and the display module are sequentially connected in series to form a main channel; the environment sampling module, the network module, the communication receiving module, the conversion module, the routing module and the display module are sequentially connected in series to form an environment sampling channel;
in the system, the network module is used for providing a stable signal link for the communication receiving module and the environment sampling module, and the purpose of acquiring signals from a central video platform as backup signals is realized by utilizing a broadband Internet, wherein the network module has four network access modes, namely, broadband WAN access based on an RJ45 interface, TDD-LTE 4G network access, FDD-LTE 4G network access and WCDMA 3G network access, is matched with the actual selection of a use place, and selects the access mode with the maximum rate after the test of the use place, and the downlink of the selected access mode is higher than 20Mbps and the time delay is lower than 50ms for ensuring the quality of the signal link; the communication receiving module selects an android system structure, and simultaneously requires more than 128G to exist, and the communication receiving module is used for running appointed application software including a central view APP, decoding image and audio and outputting the decoded image and audio through a MicroUSB interface; the conversion module is used for converting signals output by the MicroUSB interface into output signals of an HDMI high-definition interface, a VGA image display interface and an AUDIO-3.5MM AUDIO interface for docking with the back-end equipment; the environment sampling module consists of a camera, a vertical lifting cradle head and a front-end server, and uses a Dahua H.265,600 ten thousand pixel network camera to simultaneously install Dahua APP application software on the communication receiving module, and the environment sampling module is used for transmitting a shot image to the communication receiving module through WIFI, and outputting an image through a MicroUSB interface for signal selection after the communication receiving module installs the Dahua APP; the power module is used for providing 5V power required by the communication receiving module and the conversion module, providing 12V power required by the network module, the environment sampling module, the digital set top box, the routing module and the display module, providing 24V power required by the DTMB receiving antenna, and internally arranging a 24V12AH lithium battery pack and a battery pack expansion interface, and improving the EMI performance of the power by using an LDO voltage reduction and stabilizing circuit structure;
when the system operates, a main channel provides a signal source by DTMB space signals, the signal source is output to a route selection module through a DTMB receiving antenna and a digital set top box, a display module monitors the signals and provides three interfaces, namely an HDMI high-definition interface, a VGA image display interface and an AUDIO-3.5MM AUDIO interface, so that the connection requirements of different back-end devices including a front projector are met, and the main channel is used for providing image AUDIO signals for the back-end devices in a normal state; the secondary channel is provided with a broadband internet channel by a network module so as to ensure smoothness of link connection of a central vision platform, the communication receiving module starts application software to use a central vision APP, after a target channel and image definition are selected, signals output by a micro USB interface of the communication receiving module are output to the routing module after passing through the conversion module, when the main channel is abnormal, the signals are automatically switched to the secondary channel by the routing module, and smoothness is recovered;
the environment sampling channel is used for shooting and collecting the images of the using places, when the application software of the communication receiving module is started in running, the application software is started, the APP selects the image definition and then outputs the image through the MicroUSB interface, the image is output to the routing module after passing through the conversion module, and when the images of the using places are required to be output to the rear-end equipment, the operation is completed by manually switching to the secondary channel.
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