CN204272291U - Suspension type high definition wireless video terminal - Google Patents

Abstract

A kind of suspension type high definition wireless video terminal comprises HD video server, wireless system, battery system, video incoming end and automatically controlled making sheet, and wherein HD video server provides the network video recorder (NVR plate) having solid state hard disc and store; Wireless system comprises wireless router and radio access module (CPE plate); Battery system comprises lithium battery module and charging adapter; Wireless router is connected with video incoming end (high-definition camera 1080P) with radio access module (CPE plate), HD video server (NVR plate) respectively; Automatically controlled making sheet is connected with lithium battery module with wireless router, radio access module (CPE plate) respectively.The suspension type high definition wireless video terminal that the utility model provides, can utilize the SD image that 340MHz wireless network real-time Transmission D1 resolution 25 frame is per second, stores 720p resolution 25 frame high-definition image per second and speech data.

Description

Suspension type high definition wireless video terminal

Technical field

The utility model relates to emergency communication commander field, particularly relates to a kind of suspension type high definition wireless video terminal.

Background technology

At present, at emergency communication commander field headend equipment, because emergent scope constantly expands, many problems are thereby produced, such as: national frequency band division, bandwidth availability ratio, narrow band transmission, wideband transmit.

Because Ministry of Industry and Information has determined that emergency communication commander employs 336-344MHz frequency range, solve the problem that market uses the confusion of frequency range.Current problem in urgent need to solve is wireless coverage, the fail safe of user, mobility, realize transmission of video and ensure that picture quality, working service are convenient in band-limited situation.

The headend equipment in current emergency communication commander field has COFDM equipment, 350,000,000 Digital Clustering equipment, 3G equipment, these equipment above-mentioned have respective a little and shortcoming, such as, COFDM equipment is single construction equipment, can only picture-and-sound be transmitted and received, lack radio voice and call voice function; 350000000 Digital Clustering equipment are half-duplex apparatuses, have radio voice function, but image transmission ability very weak, do not support that moving image transmitting is defeated, does not have telephony feature yet; 3G equipment is full duplex equipment, but faces hot issue again in emergency communication field, and its video transmission bandwidth is restricted simultaneously, does not transmit D1 or 720p video.

McVics wireless video communication emergency commading system a kind of adopts 340MHzHz wireless frequency to be transmission channel, take SCDMA as technological core, based on IP framework, the wireless broadband system of the multiple application modes such as data, video, voice is provided for user.The system uses accurate 4G technology, and adopt intelligent antenna technology, transmission bandwidth is high, wide coverage, and base station uses macrocellular principle, has higher diffracting power, support non line of sight transmission, therefore, a kind of suspension type wireless video terminal being used in this system is needed.This suspension type terminal can hang on the outdoor locations such as electric pole easily, expands the coverage of McVics wireless network, for interim solution of emergent event provides sound assurance.And this equipment also configures internal high-capacity lithium battery, can when without continuous firing when external power supply 6 hours.

Utility model content

For solving the problems of the technologies described above, the purpose of this utility model is to provide a kind of for McVics wireless video communication emergency command field, and D1 format video image can be transmitted glibly, the local suspension type high definition wireless video terminal storing 720p format video image.

For realizing above-mentioned utility model object, the technical solution of the utility model is as follows:

A kind of suspension type high definition wireless video terminal, comprises HD video server, wireless system, battery system, video incoming end and automatically controlled making sheet, wherein:

HD video server provides the network video recorder (NVR plate) having solid state hard disc and store; Wireless system comprises wireless router and radio access module (CPE plate); Battery system comprises lithium battery module and charging adapter, powers for giving HD video server;

Wireless router is connected with video incoming end (high-definition camera 1080P) with radio access module (CPE plate), HD video server (NVR plate) respectively; Automatically controlled making sheet is connected with lithium battery module with wireless router, radio access module (CPE plate) respectively.

Further, HD video server comprises SOC processor, and the HD video coding chip, network interface driving chip, serial ports, memory interface (SD card interface), the power module that are connected on SOC processor, network interface driving chip network interface in succession, HD video coding chip connects video interface; HD video server is connected with wireless router by network interface.

Further, radio access module (CPE plate) is CPE323 module.

Further, the software platform of HD video server adopts embedded arm-linux system.

Further, HD video server also comprises plug in software module, and plug in software module comprises with lower module:

Host process module, carrying out communication for being responsible for central server, reporting the state of modules to server, and receiving the order sended over from server, these orders is distributed to each software module and goes to perform;

Network media services module, for providing real-time audio and video data;

Video encoding module, for the coding video data compression that will obtain, the real time video data after compression puts into shared drive;

Picture recording module, for creating local video file, real-time storage video data is to memory device;

FTP service module, for providing FTP login service, user logs in video server by FTP mode, by download equipment daily record and video file after cipher authentication;

SSH service module, for providing remote login service, and guarantees the safety of signaling; Technical staff, by SSH mode remote logged-in device, safeguards and failure diagnosis equipment;

Logger module, for recording the operation information of each software module key;

Customer parameter arranges module, for the interactive interface between equipment and user;

Process monitoring module, for monitoring software module, if find that abnormality appears in certain module, just restarts this software module.

Further, radio access module (CPE plate) for by HD video server access of radio network, and possesses wireless voice communication function.

Further, radio access module (CPE plate) also comprises power interface, network interface, radio-frequency antenna interface.

The advantage of the suspension type high definition wireless video terminal that the utility model provides is transmission of video; Voice transfer; The several functions such as local storages roll into one, and video can the image of real-time Transmission D1 image quality, supports the input of 720p high-definition digital signal, and supports local storage; Can outdoor fixed installation, classification of waterproof IP65.Have compared with other emergence technology networking flexibility, several functions, ensure the beneficial effects such as communication security, image effect are clear, coverage distance is far away.

Accompanying drawing explanation

Fig. 1 is the suspension type high definition wireless video terminal system framework figure that the utility model provides;

Fig. 2 is the system framework figure of HD video server in the utility model;

Fig. 3 is the network portion circuit diagram of HD video server in the utility model;

Fig. 4 is the circuit diagram of the high definition coding chip of HD video server in the utility model;

Fig. 5 is the software architecture schematic diagram of HD video server in the utility model;

Fig. 6 is CPE plate logic function block diagram in the utility model;

Fig. 7 is battery pack catenation principle figure in the utility model;

Fig. 8 is battery pack protective circuit schematic diagram.

Embodiment

In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.

As shown in Figure 1, a kind of suspension type high definition wireless video terminal that the utility model proposes, comprises HD video server, wireless system, battery system, video incoming end and automatically controlled making sheet, wherein:

HD video server provides the network video recorder (NVR plate) having solid state hard disc and store; Wireless system comprises wireless router and radio access module (CPE plate); Battery system comprises lithium battery module and charging adapter, powers for giving HD video server;

Wireless router is connected with video incoming end (high-definition camera 1080P) with radio access module (CPE plate), HD video server (NVR plate) respectively; Automatically controlled making sheet is connected with lithium battery module with HD video server, radio access module (CPE plate) respectively.

In technique scheme, as shown in Figure 2, HD video server comprises SOC processor (such as Hi3520A), and the video coding chip (such as NVP1118), network interface driving chip (such as RTL8211), serial ports, memory interface (SD card interface), the power module that are connected on SOC processor, network interface driving chip network interface in succession, video coding chip connects video interface; HD video server is connected with wireless router by network interface.

HD video server is core component of the present utility model, and its function mainly comprises: encoding video pictures compression, video file store.As shown in Fig. 2,3,4,5, video server hardware components forms primarily of following integrated circuit (IC) chip: network interface driving chip RTL8211, video device A/D chip NVP1118, SOC (system on chip) processor Hi3520A.Whole system has 256MB internal memory, the SPI-norflash memory of 16MB and the MLC-nandflash of 8G.Hi3520A inside is integrated with an ARM Cortex-A9 processor and VENC processor.H.264CODEC Hi3520A processor carries, can realize D1 resolution or 720p in real time H.264, Motion JPEG HD video coding.Data Communication in Computer Networks is responsible for by ARM Cortex-A9 processor, serial communication and peripheral circuit control etc.In addition, Hi3520A self is also with storage control, and this makes video server to connect solid state hard disc, is used for storing video file.Video server is with the network interface of 10M/100M, and it can pass through wire/wireless two kinds of mode access networks.

During a kind of suspension type high definition wireless video terminal work that the utility model provides, the analog video data sended over from external SD camera via wireless router to HD video server, carried out the AD conversion of analog signal by NVP1118, become digital video signal and input to Hi3520A.These data are carried out compressed encoding by the VENC processor of Hi3520A, export ES flow data in shared drive, application program converts audio/video file to after receiving these data, deposit in a hard disk, these data transaction also become and for the Packet Generation of Internet Transmission to central platform, thus can achieve the function of local video recording storage and real-time video transmission by while.

In addition, the high-definition digital signal data that sends over of external high-definition camera carries out digital signal by NVP1118 and is converted to BT.1120 signal and inputs to Hi3520A.These data are carried out compressed encoding by the VENC processor of Hi3520A, export ES flow data in shared drive, application program converts audio/video file to after receiving these data, deposit in a hard disk, these data transaction also become and for the Packet Generation of Internet Transmission to central platform, thus can achieve the function of local video recording storage and real-time video transmission by while.

In addition, in Figure 5, Hi3520A is controlled NVP1118 by I2C bus, and digital of digital video data is that 8 (16) parallel data lines of VDO mouth by NVP1118 are sent to Hi3520A.

The software platform of HD 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 completes an independent task, and between each software module, data interaction have employed shared drive and unix territory socket realizes, and is conducive to the maintenance of software.The concrete function of each software module is introduced in detail below with reference to Fig. 6:

These orders are distributed to each software module and go to perform by host process module ipmain: host process is responsible for carrying out communication with central server, reports the state of modules to server, and receives the order sended over from server.Equipment one powers on, and ipmain initiatively connects central server, in connection after server, initiatively the important information of the machine is sent to server, as the guid of equipment, infield, hardware information and network parameter etc.This process is called " facility registration ".In registration process, the authentication mode of digital certificate between equipment and server, can be adopted, guarantee the safety of communication between equipment and server.After in registration, ipmain at set intervals, sends heartbeat data packets to server, and server thinks that equipment is still online, again carries out the certification of digital certificate simultaneously.In addition, the data interaction between each ipmain and server all will through the certification of password, all with a password in each order.If the password in the order that server sends is not inconsistent, then this order abandons and disregards by ipmain.

Network media services module rtimage: this is one provides the program of real-time audio and video data for user.Monitor at a fixing network port after rtimage starts, server obtains real-time audio, video data by this network port of connection device, will through digital certificate authentication and password authentication after server and rtimage connect.Rtimage obtains audio, video data from shared drive, sends to the server connected after they being wrapped.

Video encoding module videoenc: this is a Video coding service routine.Videoenc carries out initialization to hardware coder according to the coded format set and method after starting.Then, shared drive is created, as the space that media data is deposited.Videoenc circulates and obtains video data from the video acquisition mouth of Hi3520A, and data are put into encoder and carries out compression coding, the real time video data after compression puts into shared drive.

Picture recording module diskman: be responsible for creating local video file, real-time storage video data is to memory device.Video recording adopts segmented mode to record, and the length of video file can adjust according to actual needs.Diskman is responsible for obtaining real time video data from shared drive, converts them to video file, leaves in memory device, when memory device does not have sufficient space, delete the oldest video file, realizes circulation and stores.In addition, diskman is also responsible for the index file developing and managing video file.Video files all in disk has record in the index, if a video file is deleted, the information in its indexed file also can be deleted.User can by inquiring about the video file that this index file comes on retrieval facility.

FTP serves: provide FTP login service.User can log in video server by FTP mode, after cipher authentication, and can download equipment daily record and video file.

SSH service module, for providing remote login service, and guarantees the safety of signaling; Technical staff, by SSH mode remote logged-in device, safeguards and failure diagnosis equipment;

Logger module: the service routine that Linux system carries, is responsible for the operation information recording each software module key specially after amendment.

Customer parameter arranges module: the interactive interface between equipment and user.Background service is realized by an embedded boa service routine and cgi script, and front end page is write by the html page and javascrpit, adopts ajax technology, is convenient to write and safeguard, maintains the compatibility of various browser.User can use browser to carry out the configuration page of beaching accommodation, is configured and revises, as ip address, coded system, image parameter etc. to the parameter of equipment.Have a configuration file in equipment, the inside saves all equipment and runs relevant various parameters.After user has revised device parameter with browser each time, cgi script by amended parameter stored in configuration file, and will understand restart facility, and equipment runs according to the parameter after change.

Process monitoring module watch_proc: the critical software modules in system is monitored, as ipmain, rtimage and videoenc etc., guarantee that these software modules are normally run, if find that abnormality appears in certain module, this software module will be restarted.In addition, after device start, watch_proc is the application program started at first, and it is responsible for carrying out initialization to system, loaded with hardware driver module, then starts each application program according to fixing sequencing.Watch_proc independent operating by the impact of any other module, is not monitored each software module on backstage.

Watch_proc, FTP service, SSH service, these 4 programs of parameter setting module all independent operatings, do not have data interaction with other application programs.Logger module receives the log information that all software modules are sent, and is recorded in journal file, and this functions of modules is also relatively independent, does not have interactive operation with other software modules.

Ipmain, as host process module, except being responsible for external networking command communication, is also responsible for carrying out data interaction between inner and other software modules.Ipmain receives command packet from central platform server, then order is distributed to relevant software module.Each software module completes an independently task, and can the instruction that sends over of real-time reception ipmain, adjusts its operating state.Any one software module breaks down, and can not affect the normal operation of other software module.

Described radio access module (CPE plate) for by described HD video server access of radio network, and possesses wireless voice communication function.Radio access module (CPE plate) can adopt the GTE323 module of Xin Wei company, and it effectively can realize the interconnection of a road wired ethernet mouth and 340MHz wireless network, and possesses wireless voice communication function.This module-external with a power interface, RJ11 telephony interface, a RJ45 network interface and a radio-frequency antenna interface.As shown in Figure 7, the logic function unit of GTE323 comprises: RF signal receiving and s ending process, the process of Analog Baseband interface, digital baseband Digital Signal Processing and control and power management etc.CPU primary processor adopts the dual core processor OMAP1621 of TI, and it has an ARM926 core and a C55DSP core, comprises the interfaces such as JTAG, EMIFS, MPUIO, GPIO, MCBSP simultaneously.Wherein ARM core mainly completes the function such as the process of signaling, the control of system, and DSP core mainly completes the function such as decomposition/synthesis of the coding/decoding of baseband signal, spread spectrum/despreading, modulating/demodulating, data service and signaling.Power module mainly completes the function of powering to whole plate, the power supply that multichannel can be provided suitable according to the power reguirements of device on plate, 3.3V/3V/1.5V.External power source+5V inputs, and is somebody's turn to do+5V power supply produces 4.4V voltage power supply through the LDO of 1.5A.Radio frequency interface and data buffering module complete 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 the chips such as AD9861, LC4256 and circuit.AD9861 completes the mutual conversion of digital and analog signaling; CPLD chip LC4256 mainly completes the buffering of data and the controlling functions to AD9861, is connected with OMAP by EMIFF interface; Radio frequency control interface uses the MCSI2 interface of OMAP, is configured to four line SPI interface modes.Ethernet interface module is the interface that GTE3 and host computer transmit data, provides the duplexing Ethernet interface meeting IEEE802.3 standard.The chip LAN91C93 adopted is the FDX Ethernet interface chip of a non-pci interface, supports IEEE802.3 standard, has the buffer RAM of 6K bytes in sheet, supports the driving of the state/detection indicator light on network interface.Most of Ethernet chip all adopts pci interface to control in the market, is not suitable for OMAP1621, therefore selects the LAN91C93 directly conducted interviews by 16 position datawires and control line.In the application of this product, video server is connected with GTE323 by wired RJ45 network interface, and video server is accessed special 340MHz wireless network by GTE323.This module not only has the function of Data Communication in Computer Networks, also has the function of wireless speech communication, and telephone set can be connected with GTE323 by user, calls.The function of speech communication comprises intercommunication, grouies busy and group calling.In addition, GTE323 also has the function of service detach, and namely network data transmission is strictly separated with speech communication business.When user calls time, do not take the bandwidth of network communication.

Lithium battery module can be rechargeable battery pack, and as shown in Figure 8, rechargeable battery pack is made up of 6 battery cores, and battery core adopts sanyo company UR18650F lithium electricity battery.It is 4.2V that each battery core is full of the voltage after electricity, and normal voltage is 3.7V.The total capacity of battery pack is 12V 24Ah.In addition, as shown in Figure 8, this battery pack is built-in over-charge protective and current foldback circuit, protect IC adopts special chip S8253B, avoids battery to be in use subject to unnecessary damage.Battery core connected mode is: six battery cores, and parallel connection is between two divided into 3 groups, then the battery pack that the composition one that is cascaded is large.

Power conversion board adopts two panels MP1484 power supply chip, 12V is transferred respectively to 9V and 5V and to power to wireless router respectively and CPE plate is powered; MP1484 be a input range at 4.75V-18V, output area 0.925V-20V adjustable voltage.This project adopts 12V input, by the value of R23, R24 and R25 in debug circuit, produces 5V and 9V voltage respectively.Gather the status signal of each plate, signal is delivered to the display of LED display lamp.Control board does connector, and convenient hard disk indication lamp and signal lamp are drawn is come on lamp plate.Export the pulse signal of an about 40ms, CPE is normally started.The power sense circuit that NCP302 and SN74LVC1G00 is formed, realize the pulse signal exported as 40ms and be connected on CPE, control CPE normally starts.

The utility model is a kind of wireless audio and video terminal of underslung support high definition coding, 340MHz wireless network real-time Transmission D1 resolution 25 frame is per second or 720p resolution 25 frame is per second high-definition image and double-directional speech data can be utilized, and there is GPS positioning function.Summary of benefits is as follows:

(1) adopt special wireless communication module, real non line of sight transmission, supports mobile;

(2) McVics wireless private network supporting business classification, can transferring voice, image and real time data;

(3) adopt dedicated tone video coding chip, depending on type of coding support H.264, picture resolution supports D1 (720 × 576), and 720p (1280x720) the highest coding frame per second is 25 frames per second;

(4) adopt chargeable high capacity cell to power, the time of operating at full capacity is greater than 6 hours;

(5) volume is little easy to carry;

(6) transmission rate of maximum up 2Mbps;

(7) transmitting power 32 ± 2dBm EIRP.

Compared to other like products on market, its great advantage is efficient video processor, the Video coding of high definition, wireless telecommunications.At present, market do not possess the like product of identical performance index.

The above embodiment only have expressed execution mode of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.

Claims (5)

1. a suspension type high definition wireless video terminal, is characterized in that, comprises HD video server, wireless system, battery system, video incoming end and automatically controlled making sheet, wherein:

Described HD video server provides the network video recorder having solid state hard disc and store; Described wireless system comprises wireless router and radio access module; Described battery system comprises lithium battery module and charging adapter, powers for giving described HD video server;

Described wireless router is connected with described video incoming end with described radio access module, described HD video server respectively; Described automatically controlled making sheet is connected with described lithium battery module with described wireless router, described radio access module respectively.

2. suspension type high definition wireless video terminal according to claim 1, it is characterized in that, described HD video server comprises SOC processor, and the HD video coding chip, network interface driving chip, serial ports, memory interface, the power module that are connected on described SOC processor, described network interface driving chip connects network interface, and described HD video coding chip connects video interface; Described HD video server is connected with described wireless router by described network interface.

3. suspension type high definition wireless video terminal according to claim 1, is characterized in that, described radio access module is CPE323 module.

4. suspension type high definition wireless video terminal according to claim 1, is characterized in that, described radio access module is used for described HD video server access of radio network, and possesses wireless voice communication function.

5. suspension type high definition wireless video terminal according to claim 4, is characterized in that, described radio access module also comprises power interface, network interface, radio-frequency antenna interface.