CN202872968U - High-speed bidirectional mobile video remote support system - Google Patents
High-speed bidirectional mobile video remote support system Download PDFInfo
- Publication number
- CN202872968U CN202872968U CN 201220178702 CN201220178702U CN202872968U CN 202872968 U CN202872968 U CN 202872968U CN 201220178702 CN201220178702 CN 201220178702 CN 201220178702 U CN201220178702 U CN 201220178702U CN 202872968 U CN202872968 U CN 202872968U
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- China
- Prior art keywords
- support system
- mobile video
- remote support
- bidirectional mobile
- video remote
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- Expired - Fee Related
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Abstract
The utility model provides a high-speed bidirectional mobile video remote support system which is formed by combining embedded software and hardware and is provided with a high-speed and bidirectional mobile video and audio transmission terminal. According to the hardware part, double antenna receiving and an amplifying circuit are designed; the traditional single antenna is changed to the novel double antenna design; the signal receiving effect of a 3G signal is effectively enhanced; and at the same time, the double antenna design makes signal receiving stable, and the effect is particularly evident in an area with weak signals. According to the software part, an embedded operating system matching with the hardware condition is designed; the optimization design of audio and video transmission software under the 3G environment is carried out based on an H.264 protocol according to the characteristics of a 3G network; and bidirectional and multidirectional audio and video transmission are smooth under the condition of the 3G network.
Description
Technical field
The utility model be a kind of embedded software hardware combine possess high speed, the mobile video sound of bidirectional characteristic, video transmission terminal, the actual conditions such as the scene of the accident, job site, operation field can be transferred to other portable terminal and command centre by 3G network (not limitting operator) with the on-the-spot real-time condition that terminal collects.
Background technology
At present, what be similar to way moving audio video transmission terminal has microwave one-way system, a 3G one-way system, all can pass unidirectional audio frequency and video back client by 3 networks, but microwave transmission, transmitting range is not far, need add relay station and carry out the signal transfer when teletransmission, and it is larger that the individual soldier bears transmitter power, human body is had electromagnetic radiation, and cost is higher, so use comparatively limitation.And the mobile that 3G one-way video system adopts or Android operating system, software is processed and is adopted common monitoring software, cause sound, video delivery time to postpone serious, picture quality is relatively poor, can not meet consumers' demand, and can not be applied under particular job environment (, the weak or no signal district work at signal explosion-proof such as needs) such as oil filling, the inspection of oil circuit pipeline, remote districts rescue etc.
Summary of the invention
Can only one-way transmission, poor image quality, network limits in order to solve existing similar system, can't adapt to the problem of particular job environment, the utility model has been researched and developed high-speed bidirectional mobile video remote support system.This system has not only solved the problem of audio video transmission quality, speed and network limits, can also two-way and multidirectional transmission tone, video, according to industry requirement, the user can select the explosion-proof type portable terminal, can increase the functional modules such as infrared night viewing function, temperature transmission.
The technical scheme that its technical problem that solves the utility model adopts is: at hardware components, changed traditional single antenna layout, the redesign double antenna receives, amplifying circuit, changes new double antenna design into by traditional single antenna.Effectively strengthened the signal reception of 3G signal, simultaneously, the design of double antenna also makes the reception signal more stable, and is particularly evident in the weak regional effect of signal.At software section, by the Design of Embedded Operating System that is complementary with hardware condition, so that system running speed is exceedingly fast and stable; Sound, transmission of video software on protocol basis H.264, according to the characteristics of 3G network have for done optimal design under the 3G environment, two-way and multidirectional sound, video transmit more smooth under the 3G network condition.When portable terminal when no signal area (the equal no signal of three large operators), portable terminal has two kinds of emergency measuress:
1. can store by local the shooting, after can automatically uploading onto the server when the 3G signal is arranged, command centre can download;
2. the user of service can use the database data of the local storage of terminal to carry out the field operation guidance.
The beneficial effects of the utility model are by the design of double antenna, to have strengthened the reception of signal and the transmission rate of audio frequency and video
Description of drawings
Figure a pair of antenna assumption diagram
Embodiment
In figure one, pin 1 resistance=0 Ω, gaining is 6.5dB; Pin 2 is short-circuited to ground, and AM output AGC set-point is+79dB μ V.Pin 10 is short-circuited to ground, and the FM gain is 8.5dB; Pin 12 resistance to earth=39k Ω, FM output AGC protection point is+94dB μ V.The signal path gain
| Pin 1 (Ω) | AM gain (dB, representative value) |
| 0 | 6.5 |
| 22 | 5 |
| 68 | 2.5 |
| 180 | 0.5 |
| 330 | -1 |
The signal path set-point
| |
AM output set-point (dB μ V, representative value |
| Ground | 79 |
| Open | 83 |
| V LD0 | 86 |
The signal path gain
| Pin 10 | FM gain (dB, representative value; Without non-essential resistance) | FM gain (dB, representative value; Non-essential resistance=390 Ω) |
| V LD0 | 8.5 | 10.8 |
| Open | 7.1 | 10.3 |
| Groun | 5.8 | 10 |
The signal path set-point
| Pin 12 (k Ω) | FM output protection point (dB μ V, representative value) |
| 0 | 104 |
| 10 | 100 |
| 18 | 96 |
| 27 | 95 |
| 39 | 94 |
| 47 | 93 |
| 56 | 92 |
| 68 | 90 |
For two application,
DuplexDevice must be down to minimum with equivalent input capacitance, the input of not feed-in high resistant.Antenna is generally high resistant, increases shunt capacitance with deamplification.Circuit also must keep coupling with input, inhibition zone external signal when obtaining optimum noise figure and frequency response.
Connect one " trapper " at input, the signal that is coupled to is down to minimum.Trap suppresses to be at least 60dBc, and between antenna and trap circuit 4.7 μ H inductance is installed.For eliminating
Distortion, in input a series inductance is installed, improve the feedback of frequency band.Duplexer partly need to adopt 50 Ω antenna match, and the above decay of 90dB is provided simultaneously.Should keep minimum inductance, consider limited
The Q value, each element of increase can cause the noise factor variation.
Claims (3)
1. high-speed bidirectional mobile video remote support system, mainly formed by server, command centre, portable terminal, it is characterized in that: described high-speed bidirectional mobile video remote support system also comprises double antenna, and described double antenna is by external 10 Ohmic resistances of 1 pin of MAX2180 and the little electric capacity of connecting.
2. high-speed bidirectional mobile video remote support system according to claim 1, it is characterized in that: described MAX2180 input is connected with trap circuit, and between antenna and trap circuit 4.7 μ H inductance is installed.
3. high-speed bidirectional mobile video remote support system according to claim 1 is characterized in that: described portable terminal comprises the database of local storage, and the database of described local storage adopts OpenBASE Lite embedded mobile data base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220178702 CN202872968U (en) | 2012-04-25 | 2012-04-25 | High-speed bidirectional mobile video remote support system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220178702 CN202872968U (en) | 2012-04-25 | 2012-04-25 | High-speed bidirectional mobile video remote support system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202872968U true CN202872968U (en) | 2013-04-10 |
Family
ID=48039649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220178702 Expired - Fee Related CN202872968U (en) | 2012-04-25 | 2012-04-25 | High-speed bidirectional mobile video remote support system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202872968U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109313629A (en) * | 2016-05-11 | 2019-02-05 | 电子湾有限公司 | The data transmission that management passes through network connection |
-
2012
- 2012-04-25 CN CN 201220178702 patent/CN202872968U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109313629A (en) * | 2016-05-11 | 2019-02-05 | 电子湾有限公司 | The data transmission that management passes through network connection |
| US11856043B2 (en) | 2016-05-11 | 2023-12-26 | Ebay Inc. | Managing data transmissions over a network connection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20190425 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |