CN102565544A - High-frequency signal transfer controller for integrated test system of avionic device - Google Patents
High-frequency signal transfer controller for integrated test system of avionic device Download PDFInfo
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- CN102565544A CN102565544A CN2011104495531A CN201110449553A CN102565544A CN 102565544 A CN102565544 A CN 102565544A CN 2011104495531 A CN2011104495531 A CN 2011104495531A CN 201110449553 A CN201110449553 A CN 201110449553A CN 102565544 A CN102565544 A CN 102565544A
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Abstract
The invention relates to a high-frequency signal transfer controller for an integrated test system of an avionic device. The high-frequency signal transfer controller comprises a shell, wherein a microwave switch group is arranged in the shell; ports of the microwave switch group are connected with a plurality of jacks on a front panel of the shell; the microwave switch group is connected with a signal conditioning circuit board for controlling the microwave switch group; and the signal conditioning circuit board is provided with a digital input/output (I/O) interface. Compared with the prior art, the high-frequency signal transfer controller has the advantages that: the transfer of radio frequency, microwaves and other high-frequency signals is controlled in a centralized mode, a signal transmission distance is shortened, and transfer contact points are reduced; and therefore, the possibility of attenuation, distortion and leakage of the signals is greatly reduced, test errors are reduced, and the stability of the test results is improved.
Description
Technical field
The present invention relates to a kind of high-frequency signal switching controller that avionic device is measured that is used for.
Background technology
Aviation field in modern times; Air environment generally comprises equipment such as air communications, navigation, radar and electronic countermeasure; For their Performance Detection and maintenance, adopt large aerospace electronic equipment integrated test system to accomplish usually, because the avionic device type is many; Therefore also (0 ~ 26.5GHz), the power of various signals and amplitude span scope are also very big greatly for test signal frequency band span scope.Test has two kinds of situations, and a kind of is to have an external signal source equipment to send signal, and equipment under test receives; What test is the receptivity of equipment under test; This kind equipment is integrated in " the integrated case of signal source equipment " usually, and another kind is that equipment under test sends signal, and other has an external signal receiver or load to receive signal; What test is the emitting performance of equipment under test, and the equipment that this type receives signal and detection is integrated in " the integrated case of test platform " usually.Microwave signal source, radio station simulator, pulse signal source etc. are arranged in the integrated case of signal source equipment usually; PXI cabinet, VXI cabinet, GPIB test resource etc. are arranged in the integrated case of test platform usually; Test platform equipment like the VXI cabinet, is connected with external computer through bus; And the equipment in the integrated case of signal source equipment; The signal that sends then need be connected to equipment under test after the switch of test platform equipment integration case is controlled and transferred; Interface and private cable like the panel of microwave generator through the integrated case of signal source equipment arrive the VXI cabinet in the integrated case of test platform, therein through by behind the microwave switch of VXI cabinet control, through the array interface output of the rear panel of the integrated case of test platform; Be connected to equipment under test through adapter again, as shown in Figure 1.
Therefore, there is disadvantage in present integrated test system: 1. all signals all want the road through the integrated case of test platform, transfer control and detection, phase mutual interference easily between the low-and high-frequency signal; 2. the transmission path of high-frequency signal (microwave, radio frequency, shortwave) is long, and transit point is many, is prone to cause signal attenuation, distortion and leakage; With the microwave signal is example; Its path is to be produced by microwave generator, through the front panel output of microwave generator, again through the output of signal source equipment cabinet rear panel; Import through VXI cabinet rear panel again; Through behind the microwave switch wherein, arrive the array interface output of the rear panel of the integrated case of test platform again, could arrive equipment under test at last through adapter again; Wherein switching interface (socket is connected with plug) is nearly 8,9, and high-frequency signal is very easy to bigger leakage and distortion, and this can cause, and test errors is big, the poor stability of test.
Summary of the invention
The object of the present invention is to provide a kind of avionic device integrated test system high-frequency signal switching controller of high-frequency signal being concentrated the control of transferring.
For addressing the above problem; The present invention includes casing; The microwave switch group is set in the casing; The port of said microwave switch group respectively with the casing front panel on some sockets be connected, said microwave switch group also is connected with its signal conditioning circuit plate of control, the signal conditioning circuit strip has digital I/O interface.
Said microwave switch group also has attenuator.
The built-in power module of casing to the power supply of microwave switch group.
Through type power meter sensor also is set in the casing, and it is connected with socket on the said casing front panel.
Single-pole double-throw switch (SPDT) also is set in the casing, and it is not connected with the socket of casing front panel the moved end, and two moved ends are connected with two rf loads respectively, and control end is connected with said signal conditioning circuit plate.
Compared with prior art; The present invention has carried out the control of concentrating relatively with the switching of high-frequency signals such as radio frequency, microwave, and has shortened signal transmission distance, has therefore alleviated the possibility of decay, distortion and the leakage of signal greatly; Reduce test error, increased the stability of test result.
Description of drawings
The transmission path synoptic diagram of microwave signal when Fig. 1 is the prior art test;
Fig. 2 is the structural representation of high-frequency signal switching controller of the present invention;
Microwave signal transmission path synoptic diagram when Fig. 3 is to use high-frequency signal switching controller of the present invention.
Embodiment
As shown in Figure 2; High-frequency signal switching controller of the present invention (not showing casing among the figure); Some sockets are set on its front panel; These sockets are used for being connected with the plug of cable and damper ends, and the client cables other end is connected with equipment under test or matees the corresponding device of measuring with completion with equipment under test and is connected.
Be provided with the microwave switch group of attenuator in the casing; Each contact of each switch respectively with front panel on a socket be connected; The microwave switch group is connected with the signal conditioning circuit plate; The folding of each microwave switch receives the control of signal conditioning circuit plate, and the closure of each microwave switch can make equipment under test and signal generating apparatus or the conducting of test platform equipment that is connected with corresponding socket, so that test; The signal conditioning circuit strip has digital I/O interface, is used for being connected with external computing machine, according to the instruction of external computer microwave switch is controlled.
Through type power meter sensor also is set in the casing, and it is connected with two sockets on the front panel; Single-pole double-throw switch (SPDT) also is set in the casing, and its control end is connected with the signal conditioning circuit plate, and it is not connected with a socket on the front panel moved end, two moved ends respectively with casing in two rf loads be connected.
Power module also is set in the casing, is used for providing the power supply of 24V to the microwave switch group.
The specific equipment of the general connection of each socket of front panel is used to connect the radio station simulator like the P1 socket, and the P2 socket is used to connect the radio station comprehensive test instrument, and the P5 socket is used to connect microwave signal source etc.
During actual the use; Earlier various equipment under tests and corresponding external device are connected on the socket of front panel, through external computer operation testing software, send instruction then to the signal conditioning circuit plate; The signal conditioning circuit plate then sends control signal to microwave switch group and single-pole double-throw switch (SPDT); Control the closure of each switch, realize the conducting between the distinct device group, accomplish test.
For example, when using microwave signal source to test, computing machine sends instruction; The signal conditioning circuit plate sends control signal to the microwave switch group, makes the microwave switch conducting that is connected with the P5 socket, and makes other microwave switch be in off-state; At this moment, the path of microwave signal is as shown in Figure 3, exports from microwave signal source earlier; Output to equipment under test through P5 socket, corresponding microwave switch, P9 port, signal is only through 4 transit nodes, and the cable distance also can shorten greatly.
When needing to detect the power of short-wave radio set transceiver; Make other switch be in off-state earlier; Plug with the private cable of short-wave radio set transceiver output is plugged into the socket P11 on the panel then, and then the through type power meter can detect the size of short-wave radio set transceiver power.
When the load that detection short-wave radio set sky accesses was exported, it still was rf load 2 that the signal conditioning circuit plate can be controlled single-pole double-throw switch (SPDT) selection conducting rf load 1.
For solving high-frequency signal through the path length that integrated case caused, the problem that transit node is many; The present invention has designed the high-frequency signal switching controller; In test macro, the transmission and the control of high-frequency signal are separated; The relatively independent control of transferring, avoided with low frequency signal between mutual interference mutually; Directly link to each other through divider, shortened transmission range, alleviated the decay in the signals transmission with equipment under test; Because no longer pass through the panel interface of array interface and two integrated casings, transit node significantly reduces, and has reduced the interface leak and the distortion of signal, has reduced test error, has increased the stability of test result.
Claims (5)
1. avionic device integrated test system high-frequency signal switching controller; It is characterized in that it comprises casing; The microwave switch group is set in the casing; The port of said microwave switch group respectively with the casing front panel on some sockets be connected, said microwave switch group also is connected with its signal conditioning circuit plate of control, the signal conditioning circuit strip has digital I/O interface.
2. avionic device integrated test system high-frequency signal switching controller according to claim 1 is characterized in that said microwave switch group and has attenuator.
3. avionic device integrated test system high-frequency signal switching controller according to claim 1 and 2 is characterized in that the built-in power module to the power supply of microwave switch group of casing.
4. avionic device integrated test system high-frequency signal switching controller according to claim 1 is characterized in that also being provided with in the casing through type power meter sensor, and it is connected with socket on the said casing front panel.
5. avionic device integrated test system high-frequency signal switching controller according to claim 4; It is characterized in that also being provided with in the casing single-pole double-throw switch (SPDT); It is not connected with the socket of casing front panel the moved end; Two moved ends are connected with two rf loads respectively, and control end is connected with said signal conditioning circuit plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104495531A CN102565544A (en) | 2011-12-29 | 2011-12-29 | High-frequency signal transfer controller for integrated test system of avionic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011104495531A CN102565544A (en) | 2011-12-29 | 2011-12-29 | High-frequency signal transfer controller for integrated test system of avionic device |
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| CN102565544A true CN102565544A (en) | 2012-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011104495531A Pending CN102565544A (en) | 2011-12-29 | 2011-12-29 | High-frequency signal transfer controller for integrated test system of avionic device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105739403A (en) * | 2016-05-12 | 2016-07-06 | 中国电子科技集团公司第四十一研究所 | Hierarchical type test routing device for avionics device and control method |
| CN106526254A (en) * | 2016-12-20 | 2017-03-22 | 中国航天空气动力技术研究院 | Unmanned aerial vehicle airborne avionics device test signal switching device box |
| CN109900936A (en) * | 2019-04-02 | 2019-06-18 | 中山市凯美电子有限公司 | A kind of New-type radio-frequency power supply adaptor |
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|---|---|---|---|---|
| CN105739403A (en) * | 2016-05-12 | 2016-07-06 | 中国电子科技集团公司第四十一研究所 | Hierarchical type test routing device for avionics device and control method |
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| CN106526254A (en) * | 2016-12-20 | 2017-03-22 | 中国航天空气动力技术研究院 | Unmanned aerial vehicle airborne avionics device test signal switching device box |
| CN106526254B (en) * | 2016-12-20 | 2023-11-03 | 中国航天空气动力技术研究院 | Unmanned aerial vehicle airborne avionics test signal switching equipment box |
| CN109900936A (en) * | 2019-04-02 | 2019-06-18 | 中山市凯美电子有限公司 | A kind of New-type radio-frequency power supply adaptor |
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Application publication date: 20120711 |