CN202035095U - Backpack wireless video terminal - Google Patents
Backpack wireless video terminal Download PDFInfo
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- CN202035095U CN202035095U CN 201120007437 CN201120007437U CN202035095U CN 202035095 U CN202035095 U CN 202035095U CN 201120007437 CN201120007437 CN 201120007437 CN 201120007437 U CN201120007437 U CN 201120007437U CN 202035095 U CN202035095 U CN 202035095U
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Abstract
The utility model relates to a backpack wireless video terminal, comprising a single channel video server, a GPS module connected with the single channel video server, a wireless access module connected with the single channel video server, a battery module which supplies power for the single channel video server, and an LED state display panel connected with the single channel video server, the wireless access module and the battery module. The wireless video terminal provided by the utility model is a portable audio and video terminal which supports high definition coding. The wireless video terminal can transmit high definition images with D1 resolution at 25 frames per second and bidirectional voice data in real time by a 340M wireless network, and also has a function of GPS positioning.
Description
Technical field
The utility model relates to emergency communication commander field, particularly relates to a kind of backpack wireless video terminal.
Background technology
At present,,, many problems have been produced thus, for example: national frequency band division, bandwidth availability ratio, narrow band transmission, wideband transmit, GPS location because emergent scope constantly enlarges at emergency communication commander field headend equipment.
Because Ministry of Industry and Information has determined the emergency communication commander and has used the 336-344MHz frequency range, has solved the problem of the confusion of market use frequency range.At present the urgent need problem that will solve be wireless coverage, user fail safe, mobility, realize video transmission under the band-limited situation and guarantee picture quality, under band-limited situation, realize the multiplex telephony voice transfer and ensure the quality of products, working service is convenient.
The headend equipment in the commander of emergency communication at present field has COFDM equipment, 350,000,000 Digital Clustering equipment, 3G equipment, above-mentioned these equipment all have separately a bit and shortcoming, for example, COFDM equipment is single construction equipment, picture-and-sound be can only transmit and receive, radio voice and call voice function lacked; 350,000,000 Digital Clustering equipment are half-duplex apparatuses, have the radio voice function, but the image transmittability very a little less than, do not support moving image transmitting defeated, do not have telephony feature yet; 3G equipment is full duplex equipment, but faces hot issue again in the emergency communication field, and its video transmission bandwidth is restricted simultaneously, does not transmit the D1 form.
McVics wireless video communication emergency commading system is that a kind of employing 340MHz wireless frequency is a transmission channel, is technological core with SCDMA, based on the IP framework, provides the wireless broadband system of multiple application modes such as data, video, voice for the user.This system has used accurate 4G technology, and adopts intelligent antenna technology, transmission bandwidth height, wide coverage, and base station use macrocellular principle have higher diffracting power, support the non line of sight transmission, therefore, need a kind of backpack wireless video terminal that is used in this system.
The utility model content
At defective that exists in the prior art and deficiency, the utility model proposes a kind of backpack wireless video terminal of the McVics of being used in wireless video communication emergency commading system, can transmit the video image of D1 form and supporting telephone voice, on-the-spot sound accompaniment, radio voice glibly.
To achieve these goals, the utility model proposes a kind of backpack wireless video terminal, comprise the single channel video server, GPS module, the radio access module that links to each other with described single channel video server respectively, be the battery module of described single channel video server power supply, the led state display panel that links to each other with described single channel video server, described radio access module and battery module.
Preferred as technique scheme, described single channel video server comprises the SOC processor, video coding chip, network interface chip for driving, serial ports, memory interface, the power module that links to each other with described SOC processor respectively, described network interface chip for driving is network interface in succession, and described video coding chip connects video interface;
Described single channel video server links to each other with described GPS module by described serial ports, links to each other with described radio access module by described network interface.
Preferred as technique scheme, described SOC processor be used to realize two-way D1 resolution in real time H.264, the HD video coding of MPEG4 or Motion jpeg format.
Preferred as technique scheme, described single channel video server comprises plug in software module, described plug in software module comprises with lower module:
The host process module is used for being responsible for carrying out communication with central server, the state of each module is reported to server, and received the order that sends over from server, these orders is distributed to each software module goes to carry out;
Network media service module is used to provide the real-time audio and video data;
Video encoding module, the coding video data that is used for obtaining compresses, and the real time video data after the compression is put into shared drive;
Picture recording module is used to create local video file, and the real-time storage video data is to memory device;
The FTP service module is used to provide the FTP login service, and the user can login video server by the FTP mode, by download equipment daily record and video file behind the cipher authentication;
The Telnet service module is used to provide remote login service, and the technical staff can pass through telnet mode Telnet equipment, and equipment is safeguarded and failure diagnosis;
Logger module is used to write down the operation information of each software module key;
Customer parameter is provided with module, is used for the interactive interface between equipment and the user;
The process monitoring module is used for software module is monitored, and abnormality occurs if find certain module, will restart this software module.
Preferred as technique scheme, described radio access module is used for described single channel video server access of radio network, and possesses the wireless voice communication function.
Preferred as technique scheme, described radio access module also comprises power interface, telephony interface, network interface, radio-frequency antenna interface.
The advantage of the backpack wireless video terminal that the utility model proposes is video transmission; Voice transfer; Multiple functions such as GPS location roll into one, and video can real-time Transmission D1 image quality image and local, strange land storage; Session Initiation Protocol supported in voice; GPS supports track following; But high-speed mobile, translational speed＞180km/h.Compare with other emergence technology have networking flexibility, have high maneuvering characteristics, multiple function, guarantee communication security, beneficial effect such as image effect is clear, coverage distance is far away.
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.For the person of ordinary skill in the field, to the detailed description of the present utility model, above-mentioned and other purposes of the present utility model, feature and advantage will be apparent.
Description of drawings
Fig. 1 is the utility model system block diagram;
Fig. 2 be in the utility model video server system block diagram;
Fig. 3 is the network portion circuit diagram of video server in the utility model;
Fig. 4 is the SD card interface circuit schematic diagram of video server in the utility model;
Fig. 5 is the circuit diagram of the encoder chip of video server in the utility model;
Fig. 6 is the software architecture schematic diagram of video server in the utility model;
Fig. 7 is a CPE logic function block diagram in the utility model;
Fig. 8 is battery pack catenation principle figure in the utility model;
Fig. 9 is the battery pack protective circuit schematic diagram.
Embodiment
As shown in Figure 1, a kind of backpack wireless video terminal that the utility model proposes, comprise: the single channel video server, GPS module, the radio access module that links to each other with described single channel video server respectively, be the battery module of described single channel video server power supply, the led state display panel that links to each other with described single channel video server, described radio access module and battery module.
Wherein, described single channel video server comprises SOC processor (for example GM8180), the video coding chip (for example TW9910) that links to each other with described SOC processor respectively, network interface chip for driving (for example DM9161A), serial ports, memory interface, power module, described network interface chip for driving is network interface in succession, and described video coding chip connects video interface;
Described single channel video server links to each other with described GPS module by described serial ports, links to each other with described radio access module by described network interface.
The one-way network video server is a core component of the present utility model, and its function mainly comprises: encoding video pictures compression, video file storage, gps data collection and Data Communication in Computer Networks.In addition, also have the DC/DC power transfer module on the circuit board of network video server, the power supply that responsible 12V power source conversion with battery output is 3.3V and 5V is given the power supply of GPS module and radio access module respectively.
Shown in Fig. 2,3,4,5, the video server hardware components mainly is made up of following integrated circuit (IC) chip: network interface chip for driving DM9161A, video device coding chip TW9910, SOC (system on chip) processor GM8180.Whole system has the 128MB internal memory, the flash memory of 128Mb.GM8180 inner integrated an ARM9 processor and a FA626 processor core.H.264 the FA626 processor carries the CODEC with MPEG4, can realize the JPEG HD video coding H.264/MPEG4/Motion in real time of two-way D1 resolution.The ARM9 processor is responsible for Data Communication in Computer Networks, serial communication and peripheral circuit control etc.In addition, GM8180 self also has the SD card controller, and this makes video server can connect the SD card memory, is used for storing video file.Video server has the network interface of 10M/100M, and it can pass through wire/wireless dual mode access network.In addition, network video server can receive the navigation positioning data of GPS module by serial ports output in real time, and these locator datas are sent to the alarm center service platform by radio access module.
Applicating example: the analog video data that sends over from external camera carries out the AD conversion by TW9910 earlier, becomes digital video signal and inputs to GM8180.The FA626 processor of GM8180 carries out compressed encoding with these data, output ES flow data is in shared drive, application program converts audio/video file to after receiving these data, leave in the hard disk, also these data transaction are become simultaneously and can send to central platform, thereby realized the function of local video recording storage and real-time video transmission for the packet of Network Transmission.
In addition, as seen, the outside of this video terminal is furnished with short-circuit plug in Fig. 1.After this plug was connected the network interface of the network interface of video server and radio access module, video server just can be connected to wireless network by radio access module.In the system testing process, also this plug can be removed, change special-purpose transit cable.At this moment, the system testing personnel can be connected with the Ethernet interface of wireless module and video server respectively by private cable, conveniently these two nucleus modules are tested separately.In Fig. 5, GM8180 controls TW9910 by the I2C bus, and digital of digital video data is that 8 parallel data lines by the VDI mouth of TW9910 send to GM8180.
The software platform of video server adopts embedded arm-linux operating system, and its network communication function is very powerful and stable and reliable for performance.Driver and application program all adopt standard C language to write, and are easy to the transplanting of software.Application program adopts modular design method, and each software module is finished an independent task, and data interaction has adopted shared drive and unix territory socket to realize between each software module, helps the maintenance of software.Introduce the concrete function of each software module in detail below with reference to Fig. 6:
Host process module vsmain: host process is responsible for carrying out communication with central server, the state of each module is reported to server, and received the order that sends over from server, these orders is distributed to each software module goes to carry out.Equipment one powers on, and vsmain initiatively connects central server, and behind the server, initiatively the important information with this machine sends to server, as guid, infield, hardware information and the network parameter etc. of equipment in the connection.This process is called " facility registration ".In the registration process, can adopt the authentication mode of digital certificate between equipment and the server, guarantee the safety of communication between equipment and the server.After in the registration, vsmain sends heartbeat data packets at set intervals to server, and server thinks that equipment is still online, carries out the authentication of digital certificate simultaneously once more.In addition, the data interaction between each vsmain and the server all will all have a password through the authentication of password in each bar order.If the password in the order that server sends is not inconsistent, then vsmain abandons this order and disregards.
Network media service module mediaserver: this is a program that the real-time audio and video data are provided for the user.Mediaserver starts the back and monitors at a fixing network port, and server obtains real-time audio, video data by this network port of connection device, will pass through digital certificate authentication and password authentication after server and mediaserver connect.Mediaserver obtains audio, video data from shared drive, will send to the server that has connected behind their bags.
Video encoding module videoenc: this is a video coding service routine.Videoenc starts the back hardware coder is carried out initialization according to coded format that configures and method.Then, create shared drive, the space of depositing as media data.Videoenc circulates from the video acquisition mouth of GM8180 and obtains video data, data is put into encoder carry out encoding compression, and the real time video data after the compression is put into shared drive.
Picture recording module diskman: be responsible for creating local video file, the real-time storage video data is to memory device.Video recording adopts segmented mode to record, and the length of video file can be adjusted according to actual needs.Diskman is responsible for obtaining real time video data from shared drive, converts them to video file, leaves in the memory device, when memory device does not have enough spaces, deletes the oldest video file, realizes the circulation storage.In addition, diskman also is responsible for developing and managing the index file of video file.Video files all in the disk all have record in index, if a video file is deleted, the information in its indexed file also can be deleted.The user can come video file on the retrieval facility by inquiring about this index file.
FTP service: FTP is provided login service.The user can login video server by the FTP mode, behind cipher authentication, and can download equipment daily record and video file.
Telnet service: remote login service is provided.The technical staff can pass through telnet mode Telnet equipment, and equipment is safeguarded and failure diagnosis.
Logger module: the service routine that the linux system carries, through being responsible for the operation information of each software module key of record after revising specially.
Customer parameter is provided with module: the interactive interface between equipment and the user.Realize by an embedded http service routine and cgi script at this interface.The user can use browser to come the configuration page of beaching accommodation, the parameter of equipment is configured and revises, as ip address, coded system, image parameter or the like.A configuration file is arranged in the equipment, and the relevant various parameters of all equipment operations have been preserved in the inside.After the user had revised device parameter with browser each time, cgi script will deposit amended parameter in the configuration file in, and the meeting restart facility, and equipment will be according to the operation of the parameter after the change.
Process monitoring module watch proc: the critical software module in the system is monitored, as vsmain, mediaserver and videoenc etc., guarantee that these software modules normally move, abnormality occurs, will restart this software module if find certain module.In addition, watch proc is an application program started at first behind the device start, and it is responsible for system is carried out initialization, and the loaded with hardware driver module starts each application program according to fixing sequencing then.Watch proc independent operating is not subjected to the influence of any other module, on the backstage each software module is monitored.
Watch proc, FTP service, Telnet service, parameter are provided with all independent operatings of these 4 programs of module, do not have data interaction with other application programs.Logger module receives the log information that all software modules are sent, and records in the journal file, and this functions of modules is also relatively independent, does not have interactive operation with other software modules.
Vsmain, also is responsible for carrying out data interaction between inner and other software modules as the host process module except being responsible for the external networking command communication of GTVS3024.Vsmain receives command packet from central platform server, then order is distributed to relevant software module.Each software module is all finished an independently task, and can receive the instruction that vsmain sends in real time, adjusts its operating state.Any one software module breaks down, and can not influence the normal operation of other software module.
Described radio access module is used for described single channel video server access of radio network, and possesses the wireless voice communication function.Radio access module can adopt the CPE323 module of letter prestige company, and it can effectively realize the interconnection of one road wired ethernet mouth and 340M wireless network, and possesses the wireless voice communication function.This module-external has a power interface, a RJ11 telephony interface, a RJ45 network interface and a radio-frequency antenna interface.As shown in Figure 7, the logic function unit of CPE323 comprises: RF signal receiving and s ending processing, the processing of Analog Baseband interface, digital baseband Digital Signal Processing and control and power management etc.The CPU primary processor adopts the dual core processor OMAP1621 of TI, and it has an ARM926 nuclear and a C55DSP nuclear, comprises interfaces such as JTAG, EMIFS, MPUIO, GPIO, MCBSP simultaneously.Wherein ARM nuclear is mainly finished the processing of signaling, the functions such as control of system, and DSP nuclear is mainly finished functions such as the decomposition of coding/decoding, spread spectrum/despreading, modulating/demodulating, data service and the signaling of baseband signal/synthesize.Power module is mainly finished the function to whole plate power supply, can provide multichannel suitable power supply according to the power reguirements of device on the plate, 3.3V/3V/1.5V.The input of external power source+5V, should+the 5V power supply produces the power supply of 4.4V voltage through the LDO of 1.5A.Radio frequency interface and data buffering module are finished digital-to-analogue, the analog-to-digital conversion of radio frequency analog signal, the generation of radio-frequency (RF) control signal, and the buffering of data and transmission comprise chip and circuit such as AD9861, LC4256.AD9861 finishes the mutual conversion of digital and analog signaling; CPLD chip LC4256 mainly finishes the buffering of data and to the controlled function of AD9861, is connected with OMAP by the EMIFF interface; The radio frequency control interface uses the MCSI2 interface of OMAP, is configured to four line SPI interface modes.Ethernet interface module is the interface of CPE and host computer transmission data, and the duplexing Ethernet interface that meets the IEEE802.3 standard is provided.The chip LAN91C93 that adopts is the FDX Ethernet interface chip of a non-pci interface, supports the IEEE802.3 standard, and the buffer RAM of 6Kbytes is arranged in the sheet, supports the driving of the state/detection indicator light on the network interface.Therefore most of in the market Ethernet interface chips all adopt pci interface to control, and are not suitable for OMAP 1621, select the LAN91C93 that can directly conduct interviews by 16 position datawires and control line for use.In the application of this product, video server links to each other with CPE323 by wired RJ45 network interface, and CPE323 inserts special-purpose 340M wireless network with video server.This module not only has the function of Data Communication in Computer Networks, also has the function of wireless speech communication, and the user can link to each other telephone set with CPE323, call.The function of speech communication comprises intercommunication, grouies busy and group calling.In addition, CPE323 also has the function of service detach, and promptly network data transmission is separated with the professional strictness of speech communication.When the user calls, do not take the bandwidth of network communication.
The GPS module can adopt the GR87 module of HOLUX company, and this module has two serial ports, can export pps pulse per second signal, and the two-dimensional localization precision is about 10 meters.Its mode of operation is very simple, and the GPS navigation data of NMEA0138 agreement are initiatively exported in the back that powers on from serial ports 1.This inside modules has the lithium battery of 3V, can store ephemeris information and reach 500 hours.The GR-87 volume is very small and exquisite, is of a size of 25.4mm*25.4mm*7mm, and weight has only 8 grams.In addition, it is very power saving also, and operating current is 50mA only.Video server directly is connected by the cable of single 6pin with the GPS module.
Battery module can be a rechargeable battery pack, and as shown in Figure 8, rechargeable battery pack is made up of 6 electric cores, and electric core adopts the sanyo UR18650F of company lithium electricity battery.The voltage that each electric core is full of behind the electricity is 4.2V, and normal voltage is 3.7V.The total capacity of battery pack is 12V 4.2Ah.In addition, as shown in Figure 9, this battery pack is built-in over-charge protective and current foldback circuit, the protection chip adopts special chip S8253B, avoids battery in use to be subjected to unnecessary damage.Electricity core connected mode is: six electric cores, parallel connection in twos are divided into 3 groups, are cascaded and form a big battery pack.
Have 3 rows above the led state indicator board, three of every rows are totally 9 LED lamps.Three battery electric quantity indicator lights are used for the electric weight of display device battery.Three equipment state indicator lights are used for the operating state of display video server.Three wireless signal strength indicator lights are used for the communication signal intensity of display radio access module.
The utility model is a kind of wireless audio and video terminal of portable support high definition coding, can utilize the high-definition image and the double-directional speech data of 340M wireless network real-time Transmission D1 resolution 25 frame per seconds, and have the GPS positioning function.Summary of benefits is as follows:
● adopt special-purpose wireless communication module, real non line of sight transmission is supported to move;
● the classification of McVics wireless private network supporting business, but transferring voice, image and real time data;
● the support voice intercommunication, group busy, group calling;
● adopt the dedicated tone video coding chip, look type of coding and support Motion JPEG, MPEG4 and H.264, picture resolution is supported CIF (352 * 288), HD1 (720 * 288), D1 (720 * 576), and the highest coding frame per second is per second 25 frames;
● adopt chargeable high capacity cell power supply, the time of operating at full capacity was greater than 4 hours;
● volume is little easy to carry;
● the transmission rate of maximum downstream 2Mbps;
● transmitting power 27dBm EIRP.
Other like products on the market, its great advantage is video processor efficiently, the video coding coding of high definition, high wireless telecommunications bandwidth.At present, the like product that does not possess identical performance index on the market.
Though; the utility model clearly demonstrates by above embodiment and accompanying drawing thereof; yet under the situation that does not deviate from the utility model spirit and essence thereof; the person of ordinary skill in the field works as can make various corresponding variations and correction according to the utility model, but these corresponding variations and correction all should belong to the protection range of claim of the present utility model.
Claims (5)
1. backpack wireless video terminal, it is characterized in that, comprise the single channel video server, GPS module, the radio access module that links to each other with described single channel video server respectively, be the battery module of described single channel video server power supply, the led state display panel that links to each other with described single channel video server, described radio access module and battery module.
2. backpack wireless video terminal according to claim 1, it is characterized in that, described single channel video server comprises the SOC processor, video coding chip, network interface chip for driving, serial ports, memory interface, the power module that links to each other with described SOC processor respectively, described network interface chip for driving is network interface in succession, and described video coding chip connects video interface;
Described single channel video server links to each other with described GPS module by described serial ports, links to each other with described radio access module by described network interface.
3. backpack wireless video terminal according to claim 2 is characterized in that, described SOC be used to realize two-way D1 resolution in real time H.264, the HD video coding of MPEG4 or Motion jpeg format.
4. backpack wireless video terminal according to claim 1 is characterized in that, described radio access module is used for described single channel video server access of radio network, and possesses the wireless voice communication function.
5. backpack wireless video terminal according to claim 4 is characterized in that, described radio access module also comprises power interface, telephony interface, network interface, radio-frequency antenna interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120007437 CN202035095U (en) | 2011-01-11 | 2011-01-11 | Backpack wireless video terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120007437 CN202035095U (en) | 2011-01-11 | 2011-01-11 | Backpack wireless video terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202035095U true CN202035095U (en) | 2011-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120007437 Expired - Fee Related CN202035095U (en) | 2011-01-11 | 2011-01-11 | Backpack wireless video terminal |
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| Country | Link |
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| CN (1) | CN202035095U (en) |
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2011
- 2011-01-11 CN CN 201120007437 patent/CN202035095U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING GT.ALARM NETWORKS TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: BEIJING GUOTONG CHUAN AN INFORMATION TECHNOLOGY CO., LTD. Effective date: 20121011 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121011 Address after: No. 2 in Beijing city in 100085 Haidian District East Road No. 1 hospital security building Patentee after: Beijing Guotong Chuang'an Alarm Network Technology Co., Ltd. Address before: 100085, Beijing, Haidian District on the East Road, No. 1, building 2, three floor Patentee before: Beijing GT. Alarm Networks Information Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111109 Termination date: 20190111 |