CN202738006U - Explosion-proof mobile video transmitter - Google Patents
Explosion-proof mobile video transmitter Download PDFInfo
- Publication number
- CN202738006U CN202738006U CN 201220271353 CN201220271353U CN202738006U CN 202738006 U CN202738006 U CN 202738006U CN 201220271353 CN201220271353 CN 201220271353 CN 201220271353 U CN201220271353 U CN 201220271353U CN 202738006 U CN202738006 U CN 202738006U
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- explosion
- video transmitter
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- mobile video
- proof
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Abstract
The utility model discloses an explosion-proof mobile video transmitter comprising a video transmitter, and an explosion-proof housing is arranged outside of the video transmitter. The video transmitter comprises an encoding module, a modulation module, a radio frequency module, and a power amplifier module connected in sequence, the encoding module is connected with an analog signal input terminal of a camera, and the power amplifier module is connected with a transmitting antenna. The explosion-proof mobile video transmitter employs the explosion-proof housing, protection grade is high, environment adaptability is good, and power source adaptation capability and work stability are high. The explosion-proof mobile video transmitter can be widely applied for wireless image and data communication between each operation area and a control center in industries like oil, chemical, mining industries, and the like.
Description
Technical field
The utility model relates to a kind of communication device, and specifically a kind of explosion-proof type mobile video transmitter can be applicable to extractive industry, petrochemical industry microwave communication and safety protection field already.
Background technology
In recent years, along with to production safety management further deeply, the industries such as oil, offshore oil, petrochemical industry and chemical industry are when striving for benefit, people-oriented, the consciousness of safety in production progressively improves.Therefore, the anti-explosion safety performance of the electric and lighting apparatus of explosion hazard area after purchasing, design, install, use and keeping in repair more and more obtained the attention of the industries such as oil, chemical industry.
Non-mine anti-explosion electric equipment (factory's electrical apparatus for explosive atmospheres) the 90%th is for industries (abbreviation petrochemical industry) such as oil, offshore oil, petrochemical industry, chemical industry and pharmacy, the existing flammable explosive gas/vapor species in hazardous chemical operation field in these industries is various, at present the world has had about more than 4000 to plant qualitatively, and wherein quantitative have more than 1900 to plant.The link technological equipments such as production, storage, transportation are complicated and changeable, and source of release is of a great variety, and the explosion hazard factor is difficult to analyze to be judged.At present, all departments have also given great attention for the staff's of underground work explosion-proof security.So, type selecting, installation and the working service of electrical apparatus for explosive atmospheres also required the many of complexity.And the antiknock device that can work under high-order environment also more and more obtains the favor of all departments, enterprise.The mobile video transmitter is a kind of watch-dog, is applied in more and more widely at present petrochemical industry and digging industry, but existing mobile video transmitter is the universal product, does not consider that industry particularity, particularly petrochemical industry are to the requirement of explosion-proof performance.
The utility model content
Technical problem to be solved in the utility model provides a kind of mobile video transmitter with good explosion-proof performance.
A kind of explosion-proof type mobile video transmitter described in the utility model comprises video transmitter, is provided with explosion-resistant enclosure outside video transmitter.
Described video transmitter comprises coding module, modulation module, radio-frequency module and the power amplifier module that links to each other successively, and described coding module connects the input end of analog signal of video camera, and power amplifier module connects transmitting antenna.
The utility model adopts explosion-resistant enclosure, and degree of protection is high, good environmental adaptability, and power supply adaptive capacity and job stability are higher.Can be widely used in each operation area between the industries such as oil, chemical industry, mining and wireless image, the data communication of control centre.Video transmitter has adopted advanced COFDM modulation technique, channel coding/decoding technology and error-control technique, in conjunction with MPEG2, H.263 look Audio compression coding technology, can under " in the high-speed mobile ", " non-intervisibility " condition, realize the real-time synchronization transmission of video, audio frequency and data etc.The distinguishing features such as it is wide to have transmission range, and the anti-interference and anti-fading ability of signal is strong, confidentiality is high, and the data stabilization of transmission is reliable.
Description of drawings
Fig. 1 is composition module frame chart of the present utility model,
Fig. 2 is internal transmitter principle module frame chart of the present utility model.
Embodiment
Such as Fig. 1, explosion-proof type mobile video transmitter of the present utility model comprises video transmitter 1, is provided with explosion-resistant enclosure 2 outside video transmitter 1.Comprise glass transparent spare, button, plug and clamp nut formula introducing device on the cap of this explosion-resistant enclosure.The in-built transmitter of housing, the transmitter external interface can connect a plurality of videos, audio frequency apparatus etc.Can effectively carry out communication, be that control centre understands the underground work situation in real time, and give command scheduling.
Fig. 2 is inner video transmitter, comprises the coding module, modulation module, radio-frequency module and the power amplifier module that link to each other successively, and described coding module connects the input end of analog signal of video camera, and power amplifier module connects transmitting antenna.It will become digital sampled signal by A/D converter from composite video and the two-way simulated audio signal of video camera, close circuit-switched data through being multiplexed to one behind the coding module, in the COFDM modulation module through scrambler, serial/parallel conversion, then carry out RS and convolution combined coding, carry out at last the mapping of QPSK, 16QAM or 64QAM coding, planisphere carries out the OFDM(orthogonal multiple carrier after the mapping) modulation.Two-way orthogonal signalling after the COFDM modulation are carried out quadrature modulation with the low local oscillator of making an uproar mutually in radio-frequency module, the rf modulated signal that obtains is sent to antenna transmission and goes out after sideband filter, power amplifier amplify.
This equipment is lighted put more energy into test, introducing device leakage test, popular drama of propagation of explosion test, introducing device through mechanical verification, humid test, dielectric strength test, protection test, withstand voltage test, inside and is become the detection of testing, and all meets the regulation of above standard.Can be widely used in the industries such as oil, chemical industry, mining, the whole system high efficient and reliable effectively reduces the cost of enterprise, has greatly improved supervision and the safety in production level of enterprise.Table 1 is technical parameter of the present utility model.
Table 1
| Standard of image compression | MPEG2、MPEG4、H.264 |
| Video input | AV, SDI, HDMI, RGB, composite video input CVBS |
| Frame speed | 60 frame/seconds of 10 ︿ |
| Time-delay | ＜1 frame |
| Communication frequency | 130M︿5.8GHz |
| Signal bandwidth | 1M、1.25M、2M、4M、6M、7M、8M、10MHz |
| The number of channel | 3000 |
| Frequency stability | 1ppm |
| Power | 0.1W-10W adjustable |
| Modulation system | COFDM |
| Image rate | 0.5︿40Mbps |
| Power supply | 9 ︿ 16V DC, or exchange 110 ︿ 280V |
| Working temperature | -45℃︿+80℃ |
| Relative humidity | 95% non-condensing (25 ℃) |
| Open-air adaptability | Rainwater-proof, dustproof, satisfy the vibrations requirement, explosion-proof |
The concrete application approach of the utility model is a lot; the above only is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvement, these improvement also should be considered as protection range of the present utility model.
Claims (2)
1. an explosion-proof type mobile video transmitter comprises video transmitter (1), it is characterized in that, is provided with explosion-resistant enclosure (2) outside video transmitter (1).
2. explosion-proof type mobile video transmitter according to claim 1, it is characterized in that, described video transmitter (1) comprises coding module, modulation module, radio-frequency module and the power amplifier module that links to each other successively, described coding module connects the input end of analog signal of video camera, and power amplifier module connects transmitting antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220271353 CN202738006U (en) | 2012-06-11 | 2012-06-11 | Explosion-proof mobile video transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220271353 CN202738006U (en) | 2012-06-11 | 2012-06-11 | Explosion-proof mobile video transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202738006U true CN202738006U (en) | 2013-02-13 |
Family
ID=47663660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220271353 Expired - Lifetime CN202738006U (en) | 2012-06-11 | 2012-06-11 | Explosion-proof mobile video transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202738006U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103686091A (en) * | 2013-12-23 | 2014-03-26 | 张兴玉 | Motorized multimedia communication emergency rescue command system |
| CN111031277A (en) * | 2014-11-19 | 2020-04-17 | 无锡中感微电子股份有限公司 | Digital data transmitting and receiving method and device based on composite video signal |
-
2012
- 2012-06-11 CN CN 201220271353 patent/CN202738006U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103686091A (en) * | 2013-12-23 | 2014-03-26 | 张兴玉 | Motorized multimedia communication emergency rescue command system |
| CN111031277A (en) * | 2014-11-19 | 2020-04-17 | 无锡中感微电子股份有限公司 | Digital data transmitting and receiving method and device based on composite video signal |
| CN111031277B (en) * | 2014-11-19 | 2022-02-22 | 无锡中感微电子股份有限公司 | Digital data transmitting and receiving method and device based on composite video signal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130213 |