CN102186052A - Partitioned information transmission-based intelligent high-speed railway video monitoring method and system - Google Patents
Partitioned information transmission-based intelligent high-speed railway video monitoring method and system Download PDFInfo
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Abstract
The invention discloses a partitioned information transmission-based intelligent high-speed railway video monitoring method and system. The method comprises the following steps: a ground monitoring system acquires and packages road state information; a packaged data packet is encoded and partitioned by using an erasure code to obtain a partitioned data packet; the ground monitoring system sends the partitioned data packet to a wireless broadband relay network; the wireless broadband relay network sends the partitioned data packet to a train monitoring station; and the train monitoring station receives the partitioned data packet sent by the wireless broadband relay network, reconstructs the partitioned data packet, decodes the partitioned data packet by using the erasure code, and displays decoded information on vehicle-mounted display equipment. When the partitioned information transmission-based intelligent high-speed railway video monitoring method and system are adopted, video information of road conditions of a road ahead can be reliably sent to a high-speed running train in time, so that a train driver can control the road condition information of the road ahead in real time, and therefore, the traveling control safety of a high-speed railway can be better ensured.
Description
Technical field
The present invention relates to railway broadband wireless communications field, relate in particular to a kind of high-speed railway video brainpower watch and control method and system based on the piecemeal message transmission.
Background technology
Continuous lifting along with train running speed, in order to ensure high-speed railway safety traffic, one of effective measures be allow the train operator put on " electron telescope " to look at the place ahead afar dynamic, guarantee to have enough sighting distances, so that win adequate time, take the Train Control measure.This just relies on effective high-speed railway intelligent monitor system, can in time be delivered to ground video information and environmental information on the train.
The video monitoring of high-speed railway helps safety traffic.For example to station platform, to stream of people's wagon flow situation at important crossing, road junction along the line, to the crossing of unattended duty, particularly arrange some road environment transducers in the abominable area of geographical environment, as tunnel, anxious crucial part such as turn round some video capture devices are installed at some, real-time Transmission pilot signal between train and ground makes train implementation column control immediately.
Mean high mobility at a high speed, video means the broadband.High-speed railway requires the 2-10MB broadband for transmission video signal, and will realize trans-regional roaming, and guarantees certain redundancy.Yet, based on the comparison to popular in the market several radio communication system modes, for example WLAN, WiMAX, GSM-R and satellite communication is all owing to the restriction that is subjected to high mobility and roaming, be subjected to the restriction of signal bandwidth, still be not suitable for the transmission of high-speed railway video monitoring data.
In recent years, multiple access transmission (Multicast) has become an important component part of communication network.When sending numerous user to by wireless network, Large Volume Data requires with multiple access transmission or broadcast transmitted.New technologies such as ARQ (Automatic Repeat reQuest) technology and multilevel recovery can improve reliability of data transmission effectively and avoid the appearance of network congestion, but may cause big time delay, this is unacceptable in the real-time Transmission of Large Volume Data.
Summary of the invention
In order to overcome the deficiencies in the prior art, solve the video monitoring data transmission problem of high-speed railway, the invention provides a kind of high-speed railway video brainpower watch and control method and system based on the piecemeal message transmission, in time reliably road ahead road conditions video information is sent on the train of high-speed cruising, make the train operator can grasp the condition information of road ahead in real time, thereby ensure the driving control safety of high-speed railway better.
On the one hand, the invention provides a kind of high-speed railway video brainpower watch and control method based on the piecemeal message transmission, described method is based on following control system, and this system comprises ground monitoring system, WiMAX junction network and train supervision platform; Described method comprises the steps: coding step, and described ground monitoring system is gathered road condition information, and described road condition information is encapsulated; Packet after will encapsulating then adopts correcting and eleting codes to encode and piecemeal, obtains the packet behind the piecemeal; Transmitting step, the described ground monitoring system packet after with described piecemeal sends to described WiMAX junction network; Then, the packet of described WiMAX junction network after with described piecemeal sends to described train supervision platform; Decoding step, described train supervision platform receive the packet behind the piecemeal that described WiMAX junction network sends, and the packet behind the piecemeal is rebuild and adopted correcting and eleting codes to decode, and decoded information is presented on the vehicle-mounted display device.
Above-mentioned high-speed railway video brainpower watch and control method, preferred described train supervision platform comprises vehicle-mounted many antennas, described WiMAX junction network comprises zone controller and is subjected to a plurality of repeaters of described zone controller control, described repeater distributes along the railway, each described repeater all with described vehicle-mounted many antennas in an antenna constitute man-to-man wireless channel; And, in the described transmitting step, the packet of described WiMAX junction network after with described piecemeal sends to described train supervision platform and further is: after receiving the activation signal that train sends, described WiMAX junction network enters operating state by resting state, by described wireless channel, the packet behind the described piecemeal is sent to described vehicle-mounted many antennas; Along with the high-speed mobile of train, described repeater constantly constitutes new wireless channel to finish the transmission of packet behind the piecemeal with vehicle-mounted many antennas.
Above-mentioned high-speed railway video brainpower watch and control method, the vehicle-mounted many antennas in the preferred described train supervision platform comprise a main antenna; And in the described transmitting step, the packet of described WiMAX junction network after with described piecemeal sends to described train supervision platform and further comprise: described main antenna sends more new record of described block data bag to repeater; And current repeater is received behind this record the packet behind the piecemeal that deletion is retained in the buffer memory but has successfully been sent by repeater before.
On the other hand, the present invention also provides a kind of high-speed railway video brainpower watch and control system based on the piecemeal message transmission, comprises ground monitoring system, WiMAX junction network and train supervision platform; Described ground monitoring system is gathered road condition information, and described road condition information is encapsulated; Packet after will encapsulating then adopts correcting and eleting codes to encode and piecemeal, obtains the packet behind the piecemeal; The packet of described ground monitoring system after with described piecemeal sends to described WiMAX junction network; Then, the packet of described WiMAX junction network after with described piecemeal sends to described train supervision platform; Described train supervision platform receives the packet behind the piecemeal that described WiMAX junction network sends, and the packet behind the piecemeal is rebuild and adopted correcting and eleting codes to decode, and decoded information is presented on the vehicle-mounted display device.
Above-mentioned high-speed railway video brainpower watch and control system, preferred described train supervision platform comprises vehicle-mounted many antennas, decoder and the vehicle-mounted display device that is connected successively; Described WiMAX junction network comprises zone controller and is subjected to a plurality of repeaters of described zone controller control; Each described repeater all with described vehicle-mounted many antennas in an antenna constitute man-to-man wireless channel.
Above-mentioned high-speed railway video brainpower watch and control system, preferred described train supervision platform comprises vehicle-mounted many antennas, decoder and the vehicle-mounted display device that is connected, many antennas comprise main antenna, described main antenna is used for sending more new record of packet to repeater, and current repeater is received behind this record the packet behind the piecemeal that deletion is retained in the buffer memory but has successfully been sent by repeater before.
Above-mentioned high-speed railway video brainpower watch and control system, preferred described ground monitoring system distributes along the railway, comprises video capture device, road information pick-up transducers and encoder; Described video capture device and described road information pick-up transducers are used for the real-time collection of road information, and described encoder is encoded, encapsulated and split the information that collects.
Above-mentioned high-speed railway video brainpower watch and control system, in the preferred described WiMAX junction network, described zone controller and described ground monitoring system are by the fiber optic cables wired connection; Described zone controller and described inter-repeater are by the fiber optic cables wired connection.
Beneficial effect of the present invention mainly contains following 3 points:
One, the present invention has adopted and has entangled the mode of deleting coding, can be good at substituting the process of EDC error detection and correction in traditional coded system; When receiving, because the characteristic of correcting and eleting codes, vehicle-mounted many antennas do not need to collect whole branch block messages, just can restoration and reconstruction go out raw data packets as long as collect specific minute block message of some, have improved the reliability and stability of system.
They are two years old, the present invention has adopted vehicle-mounted many antennas and railway repeater pairing along the line to make up the mode of wireless channel, along with the high-speed mobile of train, the wireless channel that repeater is continuous and the car antenna formation is new that railway is other efficiently solves the quick switching problem that bullet train faces.
Its three, the present invention is provided with unnecessary piecemeal cancel robot in repeater, effectively promoted throughput of system.
Description of drawings
Fig. 1 is the flow chart of steps that the present invention is based on an embodiment of high-speed railway video brainpower watch and control method of piecemeal message transmission;
Fig. 2 is the flow chart of steps that the present invention is based on another embodiment of high-speed railway video brainpower watch and control method of piecemeal message transmission;
Fig. 3 is the structural representation that the present invention is based on the high-speed railway video brainpower watch and control system embodiment of piecemeal message transmission;
Fig. 4 is the structural representation that the present invention is based on the high-speed railway video brainpower watch and control system embodiment of piecemeal message transmission.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
High-speed railway video brainpower watch and control method embodiment based on the piecemeal message transmission
Embodiment one
Present embodiment discloses a kind of high-speed railway video brainpower watch and control method embodiment based on the piecemeal message transmission, and this embodiment is based on following control system, and this system comprises ground monitoring system, WiMAX junction network and train supervision platform; This embodiment comprises the steps:
Coding step S110, ground monitoring system is gathered road condition information, and road condition information is encapsulated; Packet after will encapsulating then adopts correcting and eleting codes to encode and piecemeal, obtains the packet behind the piecemeal; Transmitting step S120, the ground monitoring system packet after with piecemeal sends to the WiMAX junction network; Then, the packet of WiMAX junction network after with piecemeal sends to the train supervision platform; Decoding step S130, train supervision platform receive the packet behind the piecemeal that the WiMAX junction network sends, and the packet behind the piecemeal is rebuild and adopted correcting and eleting codes to decode, and decoded information is presented on the vehicle-mounted display device.
This embodiment has adopted and has entangled the mode of deleting coding, can be good at substituting the process of EDC error detection and correction in traditional coded system; When receiving, because the characteristic of correcting and eleting codes, vehicle-mounted many antennas do not need to collect whole branch block messages, just can restoration and reconstruction go out raw data packets as long as collect specific minute block message of some, have improved the reliability and stability of system.
Embodiment two
At one more in the preferred embodiment, the vehicle-mounted monitoring platform comprises vehicle-mounted many antennas, the WiMAX junction network comprises zone controller and a plurality of repeaters that are controlled by the controller, each repeater all with vehicle-mounted many antennas in an antenna constitute man-to-man wireless channel; And in the transmitting step, the packet of WiMAX junction network after with piecemeal sends to the train supervision platform and further is: after receiving the activation signal that train sends, the WiMAX junction network enters operating state by resting state, by wireless channel, the packet behind the piecemeal is sent to vehicle-mounted many antennas; Along with the high-speed mobile of train, repeater constantly constitutes new wireless channel to finish the transmission of packet behind the piecemeal with vehicle-mounted many antennas.
This embodiment has adopted vehicle-mounted many antennas and railway repeater pairing along the line to make up the mode of wireless channel, high-speed mobile along with train, the wireless channel that repeater is continuous and the car antenna formation is new that railway is other efficiently solves the quick switching problem that bullet train faces.
Embodiment three
At one more in the preferred embodiment, the vehicle-mounted many antennas in the vehicle-mounted monitoring platform comprise a main antenna; And in the transmitting step, the packet of WiMAX junction network after with piecemeal sends to the train supervision platform and further comprise: main antenna sends more new record of packet to repeater; Be provided with unnecessary piecemeal cancel robot in repeater, current repeater is received behind this record the packet behind the piecemeal that deletion is retained in the buffer memory but has successfully been sent by repeater before.
With reference to Fig. 2, this embodiment is described in detail.
Ground monitoring system at first is encapsulated as source data packet with the road condition information that collects, and size is a k piecemeal; This source data packet is entangled again and delete coding, the packet size behind the coding is a n piecemeal, n 〉=k.Packet after will encoding again at last sends to the WiMAX junction network.
The WiMAX junction network is in " dormancy " state when not busy, in the operating state that enters of the activation signal that receives the train transmission.This moment, zone controller sent to railway repeater along the line to n the piecemeal condition of road surface packet that the place ahead ground monitoring system transmits.At first search record, piecemeal (as i the piecemeal) deletion repeater before the quilt of having stored successfully transmits sends other piecemeals, gives the train supervision platform as the i+1 piecemeal, till n branch block message all sends.
When repeater of approaching train, at first send activation signal to repeater by vehicle-mounted main antenna, make it in running order, vehicle-mounted then many antennas begin to receive the branch block message that the roadside repeater sends.When receiving i branch block message,, then send successful received signal to repeater, and begin to receive other minutes block message (as i+1 branch block message) by main antenna if this information can be successfully received; Otherwise continue to receive i branch block message, till receiving k branch block message.K the branch block message that receives entangled delete decoding, and the data after will deciphering are presented on the Vehicular display device.
This embodiment is provided with unnecessary piecemeal cancel robot in repeater, effectively promoted throughput of system.
In sum, said method embodiment in time sends to road ahead road conditions video information on the train of high-speed cruising reliably, makes the train operator can grasp the condition information of road ahead in real time, thereby ensures the driving control safety of high-speed railway better.
High-speed railway video brainpower watch and control system embodiment based on the piecemeal message transmission
With reference to accompanying drawing 3, a kind of high-speed railway video brainpower watch and control system based on the piecemeal message transmission, it comprises: ground monitoring system, WiMAX junction network and train supervision platform.The ground monitoring system setting comprises video capture device, road environment transducer and entangles and delete encoder along the railway.The WiMAX junction network comprises zone controller and repeater, the repeater in the certain zone of Region control management and control, and repeater distributes along the railway.Zone controller is connected with ground monitoring system by fiber optic cables.The train supervision platform comprises vehicle-mounted many antennas, decoder and vehicle-mounted display device, and vehicle-mounted display device is generally display in order to display message.Each repeater all with vehicle-mounted many antennas in an antenna constitute man-to-man wireless channel.Vehicle-mounted many antennas in the train supervision platform comprise main antenna, main antenna is used for sending more new record of packet to repeater, and current repeater is received behind this record the packet behind the piecemeal that deletion is retained in the buffer memory but has successfully been sent by repeater before.
With reference to accompanying drawing 4, ground monitoring system distributes along the railway, mainly obtain the road ahead condition information by video capture device and road environment transducer, encoder in the ground monitoring system encapsulates the road condition information of obtaining, and the packet after will encapsulating entangles and deletes coding and be split as several piecemeals, is transferred to zone controller in the broadband wireless junction network via fiber optic cables again.
The broadband wireless junction network distributes along the railway, comprises zone controller and repeater, and the repeater in certain geographical regional extent is managed and controlled to each Region control.Zone controller is after receiving the block data bag that ground monitoring system sends, and the mode by wired connection sends to all repeaters in the self-management scope.When approaching train, repeater activates repeater after receiving the activation id signal that the train supervision platform sends by main antenna, and the branch block message that will receive sends to air interface, sends at random again.
The train supervision platform comprises vehicle-mounted many antennas, entangles and delete decoder and vehicle-mounted display device.Vehicle-mounted many antennas receive the specific branch block message of some, and the branch block message of collecting is rebuild, and recover raw data packets, and packet is sent to decoder.Decoder entangles packet deletes decoding, and decoded road ahead state information is presented on the vehicle-mounted display device.Vehicle-mounted display device is generally display in order to display message.
The concrete course of work is with reference to shown in Figure 2.
Ground monitoring system at first is encapsulated as source data packet with the road condition information that collects, and size is a k piecemeal; This source data packet is entangled again and delete coding, the packet size behind the coding is a n piecemeal, n 〉=k.Packet after will encoding again at last sends to the WiMAX junction network.
The WiMAX junction network is in " dormancy " state when not busy, in the operating state that enters of the activation signal that receives the train transmission.This moment, zone controller sent to railway repeater along the line to n the piecemeal condition of road surface packet that the place ahead ground monitoring system transmits.At first search record, piecemeal (as i the piecemeal) deletion repeater before the quilt of having stored successfully transmits sends other piecemeals, gives the train supervision platform as the i+1 piecemeal, till n branch block message all sends.
When repeater of approaching train, at first send activation signal to repeater by vehicle-mounted main antenna, make it in running order, vehicle-mounted then many antennas begin to receive the branch block message that the roadside repeater sends.When receiving i branch block message,, then send successful received signal to repeater, and begin to receive other minutes block message (as i+1 branch block message) by main antenna if this information can be successfully received; Otherwise continue to receive i branch block message, till receiving k branch block message.K each minute block message that receives entangled delete decoding, and the data after will deciphering are presented on the Vehicular display device.
More than a kind of high-speed railway video brainpower watch and control method and system based on the piecemeal message transmission provided by the present invention are described in detail, used specific embodiment herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, part in specific embodiments and applications all can change.In sum, this description should not be construed as limitation of the present invention.
Claims (8)
1. the high-speed railway video brainpower watch and control method based on the piecemeal message transmission is characterized in that, described method is based on following control system, and this system comprises ground monitoring system, WiMAX junction network and train supervision platform; Described method comprises the steps:
Coding step, described ground monitoring system is gathered road condition information, and described road condition information is encapsulated; Packet after will encapsulating then adopts correcting and eleting codes to encode and piecemeal, obtains the packet behind the piecemeal;
Transmitting step, the described ground monitoring system packet after with described piecemeal sends to described WiMAX junction network; Then, the packet of described WiMAX junction network after with described piecemeal sends to described train supervision platform;
Decoding step, described train supervision platform receive the packet behind the piecemeal that described WiMAX junction network sends, and the packet behind the piecemeal is rebuild and adopted correcting and eleting codes to decode, and decoded information is presented on the vehicle-mounted display device.
2. high-speed railway video brainpower watch and control method according to claim 1, it is characterized in that, described train supervision platform comprises vehicle-mounted many antennas, described WiMAX junction network comprises zone controller and is subjected to a plurality of repeaters of described zone controller control, described repeater distributes along the railway, each described repeater all with described vehicle-mounted many antennas in an antenna constitute man-to-man wireless channel; And,
In the described transmitting step, the packet of described WiMAX junction network after with described piecemeal sends to described train supervision platform and further is:
After receiving the activation signal that train sends, described WiMAX junction network enters operating state by resting state, by described wireless channel, the packet behind the described piecemeal is sent to described vehicle-mounted many antennas; Along with the high-speed mobile of train, described repeater constantly constitutes new wireless channel to finish the transmission of packet behind the piecemeal with vehicle-mounted many antennas.
3. high-speed railway video brainpower watch and control method according to claim 2 is characterized in that the vehicle-mounted many antennas in the described train supervision platform comprise a main antenna; And,
In the described transmitting step, the packet of described WiMAX junction network after with described piecemeal sends to described train supervision platform and further comprise: described main antenna sends more new record of described block data bag to repeater; And current repeater is received behind this record the packet behind the piecemeal that deletion is retained in the buffer memory but has successfully been sent by repeater before.
4. the high-speed railway video brainpower watch and control system based on the piecemeal message transmission is characterized in that, comprises ground monitoring system, WiMAX junction network and train supervision platform;
Described ground monitoring system is gathered road condition information, and described road condition information is encapsulated; Packet after will encapsulating then adopts correcting and eleting codes to encode and piecemeal, obtains the packet behind the piecemeal; The packet of described ground monitoring system after with described piecemeal sends to described WiMAX junction network; Then, the packet of described WiMAX junction network after with described piecemeal sends to described train supervision platform; Described train supervision platform receives the packet behind the piecemeal that described WiMAX junction network sends, and the packet behind the piecemeal is rebuild and adopted correcting and eleting codes to decode, and decoded information is presented on the vehicle-mounted display device.
5. high-speed railway video brainpower watch and control according to claim 4 system is characterized in that,
Described train supervision platform comprises vehicle-mounted many antennas, decoder and the vehicle-mounted display device that is connected successively;
Described WiMAX junction network comprises zone controller and is subjected to a plurality of repeaters of described zone controller control;
Each described repeater all with described vehicle-mounted many antennas in an antenna constitute man-to-man wireless channel.
6. high-speed railway video brainpower watch and control according to claim 5 system is characterized in that,
Described train supervision platform comprises vehicle-mounted many antennas, decoder and the vehicle-mounted display device that is connected, many antennas comprise main antenna, described main antenna is used for sending more new record of packet to repeater, and current repeater is received behind this record the packet behind the piecemeal that deletion is retained in the buffer memory but has successfully been sent by repeater before.
7. high-speed railway video brainpower watch and control according to claim 6 system is characterized in that,
Described ground monitoring system distributes along the railway, comprises video capture device, road information pick-up transducers and encoder; Described video capture device and described road information pick-up transducers are used for the real-time collection of road information, and described encoder is encoded, encapsulated and split the information that collects.
8. high-speed railway video brainpower watch and control according to claim 7 system is characterized in that,
In the described WiMAX junction network, described zone controller and described ground monitoring system are by the fiber optic cables wired connection; Described zone controller and described inter-repeater are by the fiber optic cables wired connection.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103812605A (en) * | 2012-11-15 | 2014-05-21 | 电信科学技术研究院 | Method and device for data broadcasting control and data broadcasting in internet of vehicles |
| CN105068849A (en) * | 2015-09-02 | 2015-11-18 | 株洲南车时代电气股份有限公司 | LKJ data wireless reloading method and system |
| CN106657896A (en) * | 2016-11-25 | 2017-05-10 | 通号工程局集团北京研究设计实验中心有限公司 | Train running auxiliary system based on train-ground video transmission |
| WO2021097606A1 (en) * | 2019-11-18 | 2021-05-27 | 京东方科技集团股份有限公司 | Vehicle-mounted display control method, vehicle-mounted control apparatus, and vehicle-mounted display assembly |
| CN115649235A (en) * | 2022-12-12 | 2023-01-31 | 徐州江煤科技有限公司 | Wireless signal transmission system of intelligent monorail crane |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1600611A (en) * | 2004-10-10 | 2005-03-30 | 北京交通大学 | Method for monitoring operating state of switch machine for switches and crossings of wheel track |
| WO2007113861A1 (en) * | 2006-03-30 | 2007-10-11 | Finmeccanica S.P.A. | System for extending bi-directional satellite radio communications in tunnels |
| CN101141371A (en) * | 2006-09-05 | 2008-03-12 | 汤姆森许可贸易公司 | Method for assigning multimedia data to distributed storage devices |
| CN101166273A (en) * | 2006-10-16 | 2008-04-23 | 华为技术有限公司 | Method, device and system for transmitting video data |
| CN101437157A (en) * | 2008-12-19 | 2009-05-20 | 天津师范大学 | Multipath CDMA video transmission system for monitoring railway field video |
| CN101552659A (en) * | 2008-04-01 | 2009-10-07 | 普天信息技术研究院有限公司 | Selecting type data retransmitting method and equipment |
| WO2010070435A1 (en) * | 2008-12-19 | 2010-06-24 | Telespazio S.P.A. | System for satellite communications in tunnels |
-
2011
- 2011-03-11 CN CN 201110058331 patent/CN102186052A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1600611A (en) * | 2004-10-10 | 2005-03-30 | 北京交通大学 | Method for monitoring operating state of switch machine for switches and crossings of wheel track |
| WO2007113861A1 (en) * | 2006-03-30 | 2007-10-11 | Finmeccanica S.P.A. | System for extending bi-directional satellite radio communications in tunnels |
| CN101141371A (en) * | 2006-09-05 | 2008-03-12 | 汤姆森许可贸易公司 | Method for assigning multimedia data to distributed storage devices |
| CN101166273A (en) * | 2006-10-16 | 2008-04-23 | 华为技术有限公司 | Method, device and system for transmitting video data |
| CN101552659A (en) * | 2008-04-01 | 2009-10-07 | 普天信息技术研究院有限公司 | Selecting type data retransmitting method and equipment |
| CN101437157A (en) * | 2008-12-19 | 2009-05-20 | 天津师范大学 | Multipath CDMA video transmission system for monitoring railway field video |
| WO2010070435A1 (en) * | 2008-12-19 | 2010-06-24 | Telespazio S.P.A. | System for satellite communications in tunnels |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103812605A (en) * | 2012-11-15 | 2014-05-21 | 电信科学技术研究院 | Method and device for data broadcasting control and data broadcasting in internet of vehicles |
| CN105068849A (en) * | 2015-09-02 | 2015-11-18 | 株洲南车时代电气股份有限公司 | LKJ data wireless reloading method and system |
| CN106657896A (en) * | 2016-11-25 | 2017-05-10 | 通号工程局集团北京研究设计实验中心有限公司 | Train running auxiliary system based on train-ground video transmission |
| WO2021097606A1 (en) * | 2019-11-18 | 2021-05-27 | 京东方科技集团股份有限公司 | Vehicle-mounted display control method, vehicle-mounted control apparatus, and vehicle-mounted display assembly |
| US11315477B2 (en) | 2019-11-18 | 2022-04-26 | Boe Technology Group Co., Ltd. | Vehicle-mounted display control method, vehicle-mounted control device and vehicle-mounted display assembly |
| CN115649235A (en) * | 2022-12-12 | 2023-01-31 | 徐州江煤科技有限公司 | Wireless signal transmission system of intelligent monorail crane |
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Application publication date: 20110914 |