CN212163544U - Airborne video signal detection device - Google Patents
Airborne video signal detection device Download PDFInfo
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- CN212163544U CN212163544U CN202021122541.9U CN202021122541U CN212163544U CN 212163544 U CN212163544 U CN 212163544U CN 202021122541 U CN202021122541 U CN 202021122541U CN 212163544 U CN212163544 U CN 212163544U
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Abstract
The utility model provides an airborne video signal detection device, which mainly comprises a video detection module (1), a video generation module (2), a power module (3), a corresponding test cable and the like, wherein the airborne video signal detection device is connected to the output end of a video device through the test cable or detects a signal by a receiving end; in addition, the airborne video signal detection device simulates and generates video sources (including LVDS video sources and optical fiber video sources), and the video sources are output to video equipment through a test cable to position the fault problem. The designed airborne video signal detection device can detect video signals of an onboard video cable, optical fiber video equipment and LVDS video equipment, and the purposes of positioning and troubleshooting video failure are achieved.
Description
Technical Field
The utility model belongs to the technical field of communication, specifically be an airborne video signal detection device.
Background
At present, airborne video signal detection equipment mainly comprises equipment such as a high-speed oscilloscope, an optical power meter and the like. The high-speed oscilloscope mainly detects the quality of video signals through a signal eye pattern, and the quality comprises parameters such as signal amplitude, eye pattern cross point jitter degree, eye width, eye height and the like. An optical power meter is used to measure absolute optical power or relative loss of optical power through a length of optical fiber. The high-speed oscilloscope equipment has large size and heavy weight, is suitable for detecting modules in the equipment in an internal field and is not suitable for troubleshooting and problem positioning in an external field; the optical power meter has a single function, only detects the power of the optical fiber video signal, and cannot comprehensively detect the airborne video signal.
Therefore, under the prior art, a technician performs fault location and removal work by measuring the on/off of the video cable and replacing the video equipment in an outfield, the technical means is lagged behind, and the fault location and removal efficiency is low.
Disclosure of Invention
For solving the not enough of above-mentioned prior art existence, the utility model provides a video signal to on-board video cable, optic fibre video equipment, LVDS video equipment carries out the detection device who detects, realizes the output function who carries video signal's detection and analog video source signal.
In order to solve the technical problem, an airborne video signal detection device mainly comprises video detection module, video generation module, power module and test cable. The airborne video signal detection device is connected to the output end or the receiving end of the video equipment through the test cable to detect signals; in addition, the airborne video signal detection device simulates and generates video sources (including LVDS video sources and optical fiber video sources), and the video sources are output to video equipment through a test cable to position the fault problem.
Furthermore, the video detection module mainly comprises a photoelectric conversion card, an ARINC818 video acquisition card, an LVDS video acquisition card, a DVI conversion card and the like, and mainly has the functions of realizing photoelectric/photoelectric conversion, ARINC818 video acquisition and LVDS video acquisition. The video detection module converts 818 video optical signals collected into high-speed differential electrical signals through a photoelectric conversion card, sends the high-speed differential electrical signals to an ARINC818 video acquisition card for video detection and analysis, outputs parameters such as line synchronous frequency, field synchronous frequency, optical power and the like, and outputs the parameters to a display through DVI conversion card conversion; the video detection module sends the acquired LVDS video differential signals to the LVDS video acquisition card for video detection and analysis, and the video is converted and output to the display through the DVI conversion card.
Furthermore, the video generation module generates an ARINC818 source and an LVDS source, and the ARINC818 source and the LVDS source are composed of an ARINC818 video source card, an LVDS video source card and a photoelectric conversion card, the ARINC818 video source card outputs high-speed differential electric signals, the high-speed differential electric signals are converted into optical signals through the photoelectric conversion card and sent to the airborne optical fiber video equipment, and the LVDS video directly outputs the differential signals to the airborne LVDS video equipment.
Furthermore, the power module firstly carries out filtering through an alternating current filter, a corresponding peripheral filter circuit is designed according to the characteristics of the power module to ensure the electromagnetic compatibility of the product, then an alternating current power supply conversion module (AC-DC) converts an externally provided 220V AC power supply into DC5V required by each internal functional module, and then 5V is converted into different voltage types on each functional module through LDO (low dropout regulator), a switching power supply and the like.
Furthermore, the test cable is composed of an optical fiber video cable, an LVDS video cable and a connector, and a plurality of test cables are arranged according to the interface of the onboard video equipment to measure all video signals.
In the technical scheme, the designed airborne video signal detection device can detect video signals of an onboard video cable, optical fiber video equipment and LVDS video equipment, and the purposes of positioning and troubleshooting video fault problems are achieved.
Drawings
Fig. 1 is a connection diagram of the airborne video signal detection device of the utility model.
Fig. 2 is a cross-linking block diagram of an airborne video.
In fig. 1: 1. the video detection module 2, the video generation module 3, the power supply module 11, the ARINC818 video acquisition card 12, the LVDS video acquisition card 13, the DVI conversion card 21, the photoelectric conversion card 22, the ARINC818 video source card 23 and the LVDS video source card.
Detailed Description
The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to fig. 1 and 2.
The utility model relates to an airborne video signal detection device, as shown in figure 1, each component equipment passes through the test cable and constitutes the connection. As shown in fig. 2, if the display device cannot display the video signal of the LVDS video device 1, the test cable is connected to the output end of the LVDS video device 1 to detect whether there is a video signal output and whether the parameter is normal, and if not, it can be determined that the LVDS video device 1 is faulty; if the video signal is normal, connecting the test cable to the input end of the video processor, detecting whether the video signal is output and the parameters are normal, and if the video signal is not normal, determining that the cable from the LVDS video equipment 1 to the video processor has a problem; if the video signal is normal, connecting the test cable to the output end of the video processor, detecting whether the video signal is output and whether the parameters are normal, and if the parameters are abnormal, determining that the video processor is in fault; if the video signal is normal, connecting the test cable to the input end of the display equipment, detecting whether the video signal is output and the parameters are normal, and if the video signal is not normal, determining that the cable from the video processor to the display equipment has a problem; if the display device is normal, the display device is judged to be in fault.
In addition, the airborne video signal detection device can output a video source, and can also position faults by outputting video signals to a video processor or display equipment.
Claims (5)
1. An airborne video signal detection apparatus, characterized by: the detection device mainly comprises a video detection module (1), a video generation module (2), a power supply module (3), a corresponding test cable and the like, and the airborne video signal detection device is connected to the output end or the receiving end of the video equipment through the test cable to detect signals; in addition, the airborne video signal detection device simulates and generates video sources (including LVDS video sources and optical fiber video sources), and the video sources are output to video equipment through a test cable to position the fault problem.
2. The apparatus according to claim 1, wherein: the video detection module (1) mainly comprises a photoelectric conversion card (21), an ARINC818 video acquisition card (11), an LVDS video acquisition card (12), a DVI conversion card (13) and the like, and mainly has the functions of realizing photoelectric/photoelectric conversion, ARINC818 video acquisition and LVDS video acquisition; the video detection module (1) converts 818 video optical signals collected into high-speed differential electrical signals through a photoelectric conversion card (21) and sends the high-speed differential electrical signals to an ARINC818 video acquisition card (11) for video detection and analysis, outputs parameters such as line synchronization frequency, field synchronization frequency, optical power and the like, and outputs the parameters to a display through the conversion of a DVI conversion card (13); the video detection module (1) sends the acquired LVDS video differential signals to the LVDS video acquisition card (12), performs video detection and analysis, and outputs the video to a display through the conversion of the DVI conversion card (13).
3. The apparatus according to claim 1, wherein: the video generation module (2) generates an ARINC818 source and an LVDS source and consists of an ARINC818 video source card (22), an LVDS video source card (23) and a photoelectric conversion card (21), the ARINC818 video source card (22) outputs high-speed differential electric signals, the high-speed differential electric signals are converted into optical signals through the photoelectric conversion card (21) and then are sent to airborne optical fiber video equipment, and the LVDS video directly outputs the differential signals to the airborne LVDS video equipment.
4. The apparatus according to claim 1, wherein: the power module (3) firstly carries out filtering through an alternating current filter, a corresponding peripheral filter circuit is designed according to the characteristics of the power module (3) to ensure the electromagnetic compatibility of a product, then an alternating current power supply conversion module (AC-DC) converts a 220V AC power supply provided from the outside into DC5V required by each internal functional module, and then 5V is converted into different voltage types on each functional module through LDO, a switching power supply and the like.
5. The apparatus according to claim 1, wherein: the test cable is composed of an optical fiber video cable, an LVDS video cable and a connector, and a plurality of test cables are arranged according to an interface of the onboard video equipment to measure all video signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021122541.9U CN212163544U (en) | 2020-06-17 | 2020-06-17 | Airborne video signal detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021122541.9U CN212163544U (en) | 2020-06-17 | 2020-06-17 | Airborne video signal detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212163544U true CN212163544U (en) | 2020-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021122541.9U Active CN212163544U (en) | 2020-06-17 | 2020-06-17 | Airborne video signal detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212163544U (en) |
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2020
- 2020-06-17 CN CN202021122541.9U patent/CN212163544U/en active Active
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Address after: Nanchang high tech Industrial Development Zone, Jiangxi Province Patentee after: JIANGXI HONGDU AVIATION INDUSTRY GROUP Co.,Ltd. Address before: 330000 Jiangxi city in Nanchang Province, the new bridge box 460 box 5001 Patentee before: JIANGXI HONGDU AVIATION INDUSTRY GROUP Co.,Ltd. |
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