CN103957403A - Testing system for simulating remote wireless high-definition video transmission - Google Patents
Testing system for simulating remote wireless high-definition video transmission Download PDFInfo
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- CN103957403A CN103957403A CN201410161437.3A CN201410161437A CN103957403A CN 103957403 A CN103957403 A CN 103957403A CN 201410161437 A CN201410161437 A CN 201410161437A CN 103957403 A CN103957403 A CN 103957403A
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Abstract
The invention discloses a testing system for simulating remote wireless high-definition video transmission. The testing system comprises a first echo-free absorption chamber, a second echo-free absorption chamber, a first radio frequency converter, a second radio frequency converter and an attenuator. The first echo-free absorption chamber is used for simulating the free space transmission environment for a transmitter. The second echo-free absorption chamber is used for simulating the free space transmission environment for a receiver. The first radio frequency converter is arranged in the first echo-free absorption chamber. The second radio frequency converter is arranged in the second echo-free absorption chamber. The attenuator is connected between the first radio frequency converter and the second radio frequency converter. According to the technical scheme, the two echo-free absorption chambers can simulate the free space transmission environment for the transmitter and the receiver, then the attenuator is combined, and therefore the testing system can simulate remote open space needed in practical application in a factory. Due to the shielding function of the echo-free absorption chambers, interference among a plurality of transmitters or a plurality of receivers can be avoided, and therefore the testing result is more accurate, and higher practicality is achieved.
Description
Technical field
The present invention relates to signal testing field, relate in particular to a kind of test macro of simulating the transmission of remote-wireless HD video.
Background technology
In the systems such as unmanned plane real-time video capture control system, professional movies-making monitoring system, campus video distribution system, all need high-definition video signal to carry out real-time radio transmission.In order to verify the reliability of high-definition video signal transmission, need to test the transmitting of system, receptivity, this is also the step that must carry out before system scale of input is produced.But, due to the factory under limited distance condition be difficult to simulate practical application in needed remote open space, so can not test, and, if when many groups transceiver is tested simultaneously, probably there is the problem of multiple transmitters or the mutual interference of multiple receiver phase.
Summary of the invention
The technical problem to be solved in the present invention is, for the defect that cannot carry out Distance Test in the above-mentioned factory of prior art, provides a kind of test macro of simulating the transmission of remote-wireless HD video, can in factory, simulate and test at a distance.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of test macro of simulating the transmission of remote-wireless HD video, test for the performance to transmitter and receiver, described test macro comprises:
Be used to transmitter simulation free space transmission environment first without echo absorption chamber;
Be used to receiver simulation free space transmission environment second without echo absorption chamber;
Be arranged on described first without at least one first radio frequency converter in echo absorption chamber;
Be arranged on described second without at least one second radio frequency converter in echo absorption chamber; And
At least one attenuator, and one end of described attenuator connects one of them first radio frequency converter by coaxial cable, and the other end of described attenuator connects one of them second radio frequency converter by coaxial cable.
In the test macro of simulation remote-wireless HD video transmission of the present invention, described test macro also comprises:
Be connected in transmitter and receiver, and the HD video data analysis receiving for HD video data that transmitter is sent and receiver is to obtain the control device of transmission quality of HD video.
In the test macro of simulation remote-wireless HD video of the present invention transmission, described control device is also for reading respectively the parameter of transmitter and receiver, and according to the parameter of read parameter adjustment transmitter.
In the test macro of simulation remote-wireless HD video transmission of the present invention, described test macro also comprises:
Be connected in described control device, and memory for analysis result is stored.
In the test macro of simulation remote-wireless HD video transmission of the present invention, described test macro also comprises:
Be connected in receiver, and the display showing for the HD video data that receiver is received.
In the test macro of simulation remote-wireless HD video transmission of the present invention, described attenuator is numerical-control attenuator;
Described control device is also for controlling the pad value of described numerical-control attenuator.
In the test macro of simulation remote-wireless HD video transmission of the present invention, described control device is connected with transmitter and receiver by serial communication interface respectively.
Implement technical scheme of the present invention, can effectively simulate free space condition without electromagnetism echo without echo absorption chamber and second without echo absorption chamber due to first, therefore can simulate a free space transmission environment for transmitter, receiver, again in conjunction with attenuator, thus this test macro simulate practical application in can the factory under limited distance condition in needed remote open space.And, because first without echo absorption chamber and the second shielding action without echo absorption chamber, can avoid the interference between multiple transmitters or multiple receiver.Therefore, this test macro is in the time carrying out wireless high-definition video test transmission, and test result is more accurate, practicality is stronger.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the logic diagram that the present invention simulates the test macro embodiment mono-of remote-wireless HD video transmission;
Fig. 2 is the logic diagram that the present invention simulates the test macro embodiment bis-of remote-wireless HD video transmission.
Embodiment
Fig. 1 is the logic diagram that the present invention simulates the test macro embodiment mono-of remote-wireless HD video transmission, this test macro is for the performance of test receiver and receiver, and, this test macro comprise first without in echo absorption chamber 10, second without echo absorption chamber 20, the first radio frequency converter 30, the second radio frequency converter 40 and attenuator 50, wherein, the first radio frequency converter 30 and transmitter to be tested are arranged on first without in echo absorption chamber 10; The second radio frequency converter 40 and receiver to be tested are arranged on second without in echo absorption chamber 20.About two without echo absorption chamber, it should be noted that, be called again shielded anechoic chamber without echo absorption chamber, it is one and uses energy absorbing high-frequency electromagnetic energy, and reflect, scattering and transmission all minimum material cover the space forming on each face in room, therefore can effectively simulate the condition of free space without electromagnetism echo.In this embodiment, first absorbs 10 without echo is used to transmitter 10 to simulate free space transmission environment, and second absorbs 20 without echo is used to receiver simulation free space transmission environment.Attenuator 50 is connected between the first radio frequency converter 30 and the second radio frequency converter 40 by coaxial cable.In the time using this test macro to carry out performance test to transmitter and receiver, first transmitter is launched high-definition video signal in without echo absorption chamber 10 first by certain frequency, the first radio frequency converter 30 converts received radiofrequency signal to the travelling wave signal of HD video, and be sent to the second radio frequency converter 40 by attenuator 50, the second radio frequency converter 40 converts received travelling wave signal to radiofrequency signal, and launch in without echo absorption chamber 20 second, receiver just can receive this high-definition video signal.Can effectively simulate free space condition without electromagnetism echo without echo absorption chamber 10 and second without echo absorption chamber 20 due to first, therefore can simulate a free space transmission environment for transmitter, receiver, again in conjunction with attenuator 50, thus this test macro simulate practical application in can the factory under limited distance condition in needed remote open space.And, because first without echo absorption chamber 10 and the second shielding action without echo absorption chamber 20, can avoid the interference between multiple transmitters or multiple receiver.Therefore, this test macro is in the time carrying out wireless high-definition video test transmission, and test result is more accurate, practicality is stronger.
In addition, the quantity of the first radio frequency converter 30 and the second radio frequency converter 40 can be multiple, correspondingly, the quantity of attenuator 50 is also multiple, the first end of each attenuator 50 connects one of them first radio frequency converter 30 by coaxial cable, and the second end of this attenuator 50 connects one of them second radio frequency converter 40 by coaxial cable.Can simulate like this transmitter, receiver long-distance transmissions wireless high-definition video with MIMO antenna.
Fig. 2 is the logic diagram that the present invention simulates the test macro embodiment bis-of remote-wireless HD video transmission, compare the embodiment shown in Fig. 1, the test macro of this embodiment also comprises: control device 60, display 70 and memory 80, and also attenuator 50 is numerical-control attenuator.Wherein, control device 60 connects respectively transmitter and receiver, for example, be connected with transmitter and receiver by serial communication interface respectively, and the HD video data analysis that the HD video data that this control device 60 sends transmitter and receiver receive is to obtain the transmission quality of HD video; Control device 60 also can be used for reading respectively the parameter of transmitter and receiver, for example, and frequency, bandwidth etc., and according to the parameter of read parameter adjustment transmitter; Control device 60 also can be used for controlling the pad value of numerical-control attenuator, thereby adjusts the transmission range of simulating.In addition, memory 80 is connected in control device 60, and for analysis result is stored.Display 70 is connected in receiver, and shows for the HD video data that receiver is received.Finally it should be noted that, control device 60, display 70 and memory 80 can be integrated in a device, can be also the several devices that separate.And in other embodiments, control device 60 can be only for transmission quality is analyzed, or only for adjusting the parameter of transmitter, or only for adjusting the pad value of controllable attenuator.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in claim scope of the present invention.
Claims (7)
1. simulate a test macro for remote-wireless HD video transmission, test for the performance to transmitter and receiver, it is characterized in that, described test macro comprises:
Accommodating transmitter and be used to transmitter simulation free space transmission environment first without echo absorption chamber;
Accommodating receiver and be used to receiver simulation free space transmission environment second without echo absorption chamber;
Be arranged on described first without at least one first radio frequency converter in echo absorption chamber;
Be arranged on described second without at least one second radio frequency converter in echo absorption chamber; And
At least one attenuator, and one end of described attenuator connects one of them first radio frequency converter by coaxial cable, and the other end of described attenuator connects one of them second radio frequency converter by coaxial cable.
2. the test macro of simulation remote-wireless HD video transmission according to claim 1, is characterized in that, described test macro also comprises:
Be connected in transmitter and receiver, and the HD video data analysis receiving for HD video data that transmitter is sent and receiver is to obtain the control device of transmission quality of HD video.
3. the test macro of simulation remote-wireless HD video according to claim 2 transmission, is characterized in that, described control device is also for reading respectively the parameter of transmitter and receiver, and according to the parameter of read parameter adjustment transmitter.
4. the test macro of simulation remote-wireless HD video transmission according to claim 2, is characterized in that, described test macro also comprises:
Be connected in described control device, and memory for analysis result is stored.
5. the test macro of simulation remote-wireless HD video transmission according to claim 1, is characterized in that, described test macro also comprises:
Be connected in receiver, and the display showing for the HD video data that receiver is received.
6. the test macro of simulation remote-wireless HD video transmission according to claim 2, is characterized in that, described attenuator is numerical-control attenuator;
Described control device is also for controlling the pad value of described numerical-control attenuator.
7. the test macro of simulation remote-wireless HD video transmission according to claim 2, is characterized in that, described control device is connected with transmitter and receiver by serial communication interface respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410161437.3A CN103957403A (en) | 2014-04-21 | 2014-04-21 | Testing system for simulating remote wireless high-definition video transmission |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410161437.3A CN103957403A (en) | 2014-04-21 | 2014-04-21 | Testing system for simulating remote wireless high-definition video transmission |
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| CN103957403A true CN103957403A (en) | 2014-07-30 |
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| CN201410161437.3A Pending CN103957403A (en) | 2014-04-21 | 2014-04-21 | Testing system for simulating remote wireless high-definition video transmission |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105049130A (en) * | 2015-05-18 | 2015-11-11 | 福建联迪商用设备有限公司 | Radio communication distance testing apparatus and method |
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| CN1585308A (en) * | 2003-08-20 | 2005-02-23 | 智邦科技股份有限公司 | Multipath analog system and method |
| CN101068429A (en) * | 2007-05-24 | 2007-11-07 | 上海大学 | Mobile communication system analog testing method and small size analog testing platform |
| CN101867760A (en) * | 2010-06-23 | 2010-10-20 | 深圳市高斯贝尔家居智能电子有限公司 | High-definition audio and video wireless transmission system and method |
| CN201854284U (en) * | 2010-06-23 | 2011-06-01 | 深圳市视晶无线技术有限公司 | Automatic measuring device of antenna in multiple input multiple output (MIMO) system |
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2014
- 2014-04-21 CN CN201410161437.3A patent/CN103957403A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1585308A (en) * | 2003-08-20 | 2005-02-23 | 智邦科技股份有限公司 | Multipath analog system and method |
| CN101068429A (en) * | 2007-05-24 | 2007-11-07 | 上海大学 | Mobile communication system analog testing method and small size analog testing platform |
| CN101867760A (en) * | 2010-06-23 | 2010-10-20 | 深圳市高斯贝尔家居智能电子有限公司 | High-definition audio and video wireless transmission system and method |
| CN201854284U (en) * | 2010-06-23 | 2011-06-01 | 深圳市视晶无线技术有限公司 | Automatic measuring device of antenna in multiple input multiple output (MIMO) system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105049130A (en) * | 2015-05-18 | 2015-11-11 | 福建联迪商用设备有限公司 | Radio communication distance testing apparatus and method |
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Application publication date: 20140730 |