CN212905166U

CN212905166U - Integrated tester for aircraft antenna feeder system

Info

Publication number: CN212905166U
Application number: CN202021109369.3U
Authority: CN
Inventors: 杜怀云; 汪强
Original assignee: Sichuan Tianzhongxing Aviation Technology Co ltd
Current assignee: Sichuan Tianzhongxing Aviation Technology Co ltd
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2021-04-06
Anticipated expiration: 2030-06-16

Abstract

The utility model relates to an aircraft antenna feeder system integrated tester, power conversion unit, antenna feeder microwave power module, input module, visual module and treater, antenna feeder microwave power module, input module, visual module are connected with the treater respectively, power conversion unit provides the power, input module is used for realizing the parameter setting, and visual module is used for showing test data, and this equipment is easy and simple to handle, multiple functional, light in weight, has satisfied the needs of a ray of detection maintenance of army or repair factory.

Description

Integrated tester for aircraft antenna feeder system

Technical Field

The utility model relates to an aircraft test field, concretely relates to aircraft antenna feeder system integrated tester.

Background

The antenna feed system is used for radiating electromagnetic waves to the surrounding space by an antenna, and the electromagnetic waves are composed of an electric field and a magnetic field. The antenna feed system is used as a core component of an airplane receiving signal and a navigation radar, and the performance of the antenna feed system must be tested frequently after the antenna feed system is put into use to ensure that the antenna feed system is in a normal working state. The existing test equipment for the antenna feed system is complex in system composition, so that the operation is complex, the size is large, the test equipment is not convenient to carry, and the requirement of line detection and maintenance cannot be met.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's not enough, provide an aircraft antenna feeder system integrated test appearance, easy and simple to handle, multiple functional, light in weight have satisfied the needs of an alignment detection maintenance of army or repair shop.

The purpose of the utility model is realized through the following technical scheme:

an aircraft antenna feeder system comprehensive tester, comprising:

the antenna feeder microwave power module, the input module and the visualization module are respectively connected with the processor, the power conversion unit provides power, the input module is used for realizing parameter setting, and the visualization module is used for displaying test data;

the antenna feed microwave power module consists of a signal input module, a signal processing module and a test module, wherein the signal input module consists of two directional couplers and is used for receiving incident waves and reflected waves from a transmitting channel of an antenna feed system to be checked and completing the coupling of incident waves and reflected wave power components;

the signal processing module consists of an attenuator, an adapter, a numerical control attenuator and a first detector, the attenuator, the adapter, the numerical control attenuator and the first detector are sequentially connected in series, and the input ends of the attenuator and the adapter are respectively connected with the output end of one directional coupler;

the test module include with first amplifier and the first amplitude discriminator that first detector establishes ties in proper order to and second amplifier and the second amplitude discriminator that establish ties in proper order through second detector and airborne antenna, the output of first amplitude discriminator and second amplitude discriminator is connected to the integrator respectively, the integrator is connected with the standard lamp that is used for showing the test result.

Furthermore, the output ends of the first detector and the second detector are respectively provided with a self-checking signal module.

Further, the first detector and the second detector are used for detecting the high-frequency signal and limiting the amplitude of the signal when the signal is higher than 30-50 MW.

Further, the power conversion unit comprises a capacitor filter, a schottky diode and a DC-DC voltage regulator which are connected in series in sequence, and is used for converting direct current +27V into +12V, +5V, +3.3V, +2.5V power through the DC-DC voltage regulator, wherein +3.3V and +2.5V are power supplies special for a processor, and the schottky diode adopts SMCJ 90.

Furthermore, the input module adopts a 4 × 5 keyboard to complete the setting function of information; the keyboard scanning chip ZLG7290 and the 8-bit single chip microcomputer are used for completing equipment switch and keyboard setting, and correct execution of information is guaranteed.

Further, the visualization module is an OLED liquid crystal display.

Further, the processor adopts a single-chip microcomputer STC12C56S 60.

The utility model has the advantages that: the technical scheme is simple in structure, measurement of voltage standing wave coefficient KctU and attenuation quantity can be achieved by utilizing the antenna feeder microwave power module, and other necessary parameters are measured, and the technical indexes of simplicity and convenience in operation, complete functions, light weight and the like are achieved.

Drawings

FIG. 1 is a schematic diagram of an antenna feed microwave power module system;

FIG. 2 is a schematic diagram of a directional coupler;

FIG. 3 is a schematic diagram of a digitally controlled attenuator;

FIG. 4 is a schematic view of an adapter;

FIG. 5 is a schematic diagram of a detector;

fig. 6 is a driving keyboard scanning circuit.

Detailed Description

The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.

An aircraft antenna feeder system comprehensive tester, comprising: the device comprises a power conversion unit, an antenna feeder microwave power module, an input module, a visualization module and a processor. The antenna feeder microwave power module, the input module and the visualization module are respectively connected with the processor, the power supply conversion unit provides power supply, the input module is used for realizing parameter setting, and the visualization module is used for displaying test data;

referring to fig. 1, the antenna feed microwave power module is composed of a signal input module, a signal processing module and a testing module, wherein the signal input module is composed of two directional couplers and is used for receiving incident waves and reflected waves from a transmitting channel of an antenna feed system to be checked and completing coupling of incident wave and reflected wave power components.

Referring to fig. 2, when the directional coupler is used to measure the voltage standing wave coefficient KctU and the attenuation, the incident wave and the reflected wave power component from the transmission channel of the antenna feeding system to be tested are coupled, the high frequency signal is input from pin "1" and pin "2", the incident wave high frequency signal is attenuated by 10dB by excitation to pin No. 3 through the directional coupler, the reflected wave high frequency signal is attenuated by 10dB by excitation to pin No. 6, and pin No. 4 and pin No. 5 are respectively connected to the attenuator and the adapter, that is, the signal processing module performs signal processing.

The signal processing module consists of an attenuator, an adapter, a numerical control attenuator and a first detector, wherein the attenuator, the adapter, the numerical control attenuator and the first detector are sequentially connected in series, and the input ends of the attenuator and the adapter are respectively connected with the output end of one directional coupler;

referring to fig. 3, the digitally controlled attenuator is used to change the attenuation of the high frequency channel when measuring the attenuation and the voltage standing wave coefficient of the antenna feed system channel. The adapter is used for switching the high-frequency signals of the transmitting channel and the reflecting channel of the antenna feed system distributed by the directional coupler, and the structure of the adapter can be referred to as fig. 4.

The test module comprises a first amplifier and a first amplitude discriminator which are sequentially connected with a first detector in series, and a second amplifier and a second amplitude discriminator which are sequentially connected with the airborne antenna in series through a second detector, wherein the output ends of the first amplitude discriminator and the second amplitude discriminator are respectively connected to an integrator, and the integrator is connected with a standard lamp used for displaying a test result. The airborne antenna adopts a horizontal dipole structure with a transmitting function, and the surface of the airborne antenna is provided with a rectangular box structure fairing.

On the other hand, the first amplifier and the second amplifier mainly amplify the detected weak signal, and the amplification factor of the amplifier is adjusted through the adjustable potentiometer, so that the purpose of setting the sensitivity is achieved. The first amplitude discriminator and the second amplitude discriminator have the following functions: when the received high-frequency signal exceeds the reference voltage after detection and amplification, the output end of the amplitude discriminator forms a low-frequency pulse signal after detection, which indicates that the power of the high-frequency signal reaches a certain range. The high-frequency signal power can be accurately measured by adjusting the reference voltage. The first detector and the second detector are used for detecting high-frequency signals and performing amplitude limiting when the signals are higher than 30-50mW, and the structure can be shown in a reference figure 5.

On the other hand, the output ends of the first detector and the second detector are respectively provided with a self-checking signal module for completing the self-checking of the output signals.

The processor adopts a singlechip STC12C56S60, and comprises the following functions:

a) the communication function is as follows: the method mainly completes communication and control of a GPL6011 antenna feeder microwave power module;

b) the keyboard scanning function is used for controlling information of the keyboard and the state switch, sending an instruction, realizing function switching on the front panel and testing the switching function;

c) and (4) display function: display of transmit power, receive power.

e) An output interface: SMA interface and inspection hole interface.

Wherein the software development uses keil 4 programming. The single chip microcomputer chip mainly sends RS422 signals and parameter setting to the YDKS responder.

b) The FPGA adopts XC2S50 chip of XILINX company, and the software development adopts XILINX ISE 10.1 development platform of XILINX company. The FPGA mainly completes the liquid crystal display of the product and decodes the coded signal of the answering machine.

Further, the power conversion unit comprises a capacitor filter, a schottky diode and a DC-DC voltage regulator which are connected in series in sequence, and is used for converting direct current +27V into +12V, +5V, +3.3V, +2.5V power through the DC-DC voltage regulator, wherein +3.3V and +2.5V are power supplies special for a processor, and the schottky diode adopts SMCJ 90. The power supply voltage stabilizer is used for absorbing power supply surge, electrostatic discharge, switching noise and the like, and simultaneously preventing instantaneous pulse from damaging the rear-end voltage stabilizer. Because FPGA requires stable power supply and small ripple, a plurality of tantalum capacitors are adopted and close to power supply pins during FPGA power supply filtering so as to meet design requirements.

On one hand, the input module adopts a 4 multiplied by 5 keyboard to complete the information setting function; the keyboard scanning chip ZLG7290 and an 8-bit singlechip are used for completing equipment switch and keyboard setting, and the correct execution of information is ensured, and a circuit diagram of the keyboard scanning chip is shown in fig. 6.

Furthermore, the visualization module is an OLED liquid crystal display, and the Jinpeng liquid crystal display and the military grade OLED liquid crystal display with high reliability are adopted, so that the anti-electromagnetic interference capability is improved in the design, and the anti-vibration and impact capability of the product is improved; the metal structure has rust-proof and corrosion-proof measures, and the printed board passes high and low temperature and vibration tests after three-proofing treatment. Working temperature: -20 ° -70 °, storage temperature: -40 ° -85 ° -degree

The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. The utility model provides an aircraft antenna feeder system integrated test appearance which characterized in that includes:

2. An aircraft antenna feed system comprehensive tester as claimed in claim 1, wherein the first detector and the second detector are used for detection of high frequency signals and perform amplitude limiting when the signals are higher than 30-50 mW.

3. The aircraft antenna feeder system comprehensive tester as claimed in claim 2, wherein the power conversion unit comprises a capacitor filter, a schottky diode and a DC-DC voltage regulator connected in series in sequence, and is used for converting direct current +27V into +12V, +5V, +3.3V, +2.5V power through the DC-DC voltage regulator, wherein +3.3V and +2.5V are processor-dedicated power supplies, and the schottky diode adopts SMCJ 90.

4. The aircraft antenna feeder system comprehensive tester as claimed in claim 3, wherein the input module adopts a 4 x 5 keyboard to complete the setting function of information; the keyboard scanning chip ZLG7290 and 8-bit single chip microcomputer are used for completing the setting of equipment switches and keyboards.

5. The aircraft antenna feed system comprehensive tester of claim 4, wherein the visualization module is an OLED liquid crystal display.

6. The aircraft antenna feed system comprehensive tester as claimed in claim 5, wherein the processor employs a single-chip microcomputer STC12C56S 60.