Testing device based on airborne combined receiving equipment

Abstract

The utility model provides a testing device based on airborne combined receiving equipment. A radio frequency generation module, a microwave change module, a function carrier plate module, a man-machine interaction module and an interface signal modulation module of the testing device communicate with a main control module through the function carrier plate module; the main control module can control the radio frequency generation module to provide target radio frequency signal output according to the input of the man-machine interaction module, and control the microwave change module to select a corresponding microwave output port, so that a target radio frequency signal is provided for a corresponding receiving port of airborne combined receiving equipment, and simulation of a corresponding function is realized; the function carrier plate module further comprises an analog-to-digital converter, and navigation information generated by the airborne combined receiving equipment based on the received radio frequency signals is obtained through the interface signal modulation module. The test device based on the airborne combined receiving equipment provided by the utility model can realize the combined test of each function of the airborne combined receiving equipment, is high in integration level, and can effectively reduce the overall realization cost of the full-function test of the airborne combined receiving equipment.

Description

TECHNICAL FIELD

[0001] The utility model relates to aviation navigation system test technical field especially relates to a test device based on airborne combined receiving equipment. BACKGROUND

[0002] Modern aircraft includes a variety of airborne navigation functions, its airborne combined receiving equipment generally needs to include instrument landing system (ILS) function, microwave landing system (MLS) function, omnidirectional beacon (DVOR) function and pointing mark (MARK) function, mainly used for the navigation and approach landing guidance of aircraft, improves aviation safety.

[0003] To guarantee aviation safety, require that the various functions of airborne combined receiving equipment can work normally, wherein the communication frequency, sensitivity and other performance indexes of the various functions of airborne combined receiving equipment are different, so that in the prior art, generally adopts multiple test instruments to test its functions respectively, and the test time is long and the hardware cost is high. UTILITY MODEL CONTENT

[0004] Therefore, the utility model provides a test device based on airborne combined receiving equipment to solve the problem that the test of airborne combined receiving equipment needs to be tested respectively in the prior art, resulting in long test time and high cost.

[0005] The utility model provides a test device based on airborne combined receiving equipment, the test device includes: main control module, radio frequency generating module, microwave change module, function carrier plate module, man -machine interface module, interface signal modulation module and power module, wherein,

[0006] The main control module, the radio frequency generating module, the microwave change module, the man -machine interface module and the interface signal modulation module are all connected to the function carrier plate module, and the power module is used for power supply of other modules;

[0007] The main control module includes embedded processing system that can provide target radio frequency information, channel selection control signal and working mode control signal to the radio frequency generating module, the microwave change module and airborne combined receiving equipment respectively according to the interactive information of the man -machine interface module, and the embedded processing system includes XAZU3EG processor chip, and the man -machine interface module includes keyboard and display;

[0008] The radio frequency generating module includes radio frequency chip that can generate target radio frequency signal according to the target radio frequency information, and radio frequency output end is connected to the input end of the microwave change module, wherein the target radio frequency signal includes MLS signal, ILS signal, DVOR signal and MARK signal;

[0009] The microwave change module comprises two change channels, each of the two change channels comprises a microwave input port and two microwave output ports, and an attenuator and a double-output selection switch are sequentially connected between the microwave input port and the microwave output port, a control end of the double-output selection switch is in communication connection with the function carrier board module and the main control module through the function carrier board module to receive the channel selection control signal, and the microwave output port is connected to the interface signal modulation module to be connected to the airborne combined receiving device through the interface signal modulation module.

[0010] The function carrier board module further comprises an analog-to-digital converter connected to the interface signal modulation module to be connected to the airborne combined receiving device through the interface signal modulation module.

[0011] Optionally, the interface signal modulation module comprises a resistance voltage division circuit and an operational amplifier circuit.

[0012] Optionally, a control end of the attenuator is connected to the function carrier board module through an IIC interface to be in communication connection with the main control module through the function carrier board module, so that the attenuation value can be adjusted according to the attenuation control signal provided by the main control module.

[0013] Optionally, a main keyboard interface and a backup keyboard interface are arranged on the function carrier board module.

[0014] Optionally, a main radio frequency control interface and a backup radio frequency control interface are arranged on the function carrier board module to be in communication connection with the radio frequency generation module through any one of the main radio frequency control interface and the backup radio frequency control interface.

[0015] Optionally, an audio output unit is further arranged on the function carrier board module, and the audio output unit is in communication connection with the interface signal modulation module and the main control module.

[0016] Optionally, the power module comprises a first conversion unit, a second conversion unit and a third conversion unit, the first conversion unit is used for converting commercial power into 12V direct current, the second conversion unit is used for converting commercial power into 115V / 400Hz specification alternating current, and the third conversion unit is used for converting commercial power into 28V direct current.

[0017] Optionally, the analog-to-digital converter comprises an ADS1113 type chip.

[0018] Optionally, the function carrier board module further comprises an Arinc429 transceiver circuit and a 1553B communication circuit for communication with the airborne combined receiving device, and the Arinc429 transceiver circuit comprises an HI-8596PSIF type chip and an HI-8444PSIF type chip.

[0019] Optionally, the embedded processing system further comprises a miniDP interface and a LAN interface connected with the XAZU3EG type processor chip.

[0020] The test device based on the airborne combined receiving equipment provided by the utility model comprises a main control module, a radio frequency generating module, a microwave changing module, a functional carrier plate module, a man-machine interaction module, an interface signal modulation module and a power module, wherein the main control module, the radio frequency generating module, the microwave changing module, the man-machine interaction module and the interface signal modulation module are all communicatively connected to the functional carrier plate module, the communication and control of each module to the main control module can be realized through the functional carrier plate module, and the power module provides power supply for other modules; the main control module comprises an embedded processing system which can provide target radio frequency information, channel selection control signals and working mode control signals to the radio frequency generating module, the microwave changing module and the airborne combined receiving equipment respectively according to the interactive information of the man-machine interaction module, the embedded processing system comprises an XAZU3EG type processor chip, and the man-machine interaction module comprises a keyboard and a display; the radio frequency generating module comprises a radio frequency chip which can generate target radio frequency signals according to the target radio frequency information, and a radio frequency output end is connected to an input end of the microwave changing module, wherein the target radio frequency signals comprise MLS signals, ILS signals, DVOR signals and MARK signals, so that the test of different functions can be carried out in time; the microwave changing module comprises two changing channels, each changing channel comprises one microwave input port and two microwave output ports, and an attenuator and a double-output selection switch are sequentially connected between the microwave input port and the microwave output port, the control end of the double-output selection switch is communicatively connected to the main control module through the functional carrier plate module to receive the channel selection control signals, and the microwave output port is connected to the interface signal modulation module to be connected to the airborne combined receiving equipment through the interface signal modulation module, so that the corresponding radio frequency signals can be provided to the radio frequency signal receiving ends of different functional modules of the airborne combined receiving equipment through the microwave changing module to simulate operation; the functional carrier plate module further comprises an analog-digital converter, the analog-digital converter is connected to the interface signal modulation module to be connected to the airborne combined receiving equipment through the interface signal modulation module, so that the navigation information generated by the airborne combined receiving equipment based on the received radio frequency signals can be collected through the interface signal modulation module and the analog-digital converter, the collected navigation information is transmitted to the main control module, the navigation information can be analyzed through the main control module, and whether the airborne combined receiving equipment can work normally can be judged. The test device based on the airborne combined receiving equipment provided by the utility model can realize the combined test of each function of the airborne combined receiving equipment, has high integration, can effectively reduce the overall implementation cost of full-function test, can save the time consumption of test equipment replacement, reduces the overall test time consumption, and improves the test efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1The main module interface schematic diagram of the test device based on the airborne combined receiving equipment in the embodiment of the utility model;

[0022] Figure 2 The structure schematic diagram of the microwave change module of the test device based on the airborne combined receiving equipment in the embodiment of the utility model;

[0023] Figure 3 The partial interface definition schematic diagram of the microwave change module of the test device based on the airborne combined receiving equipment in the embodiment of the utility model;

[0024] Figure 4 The architecture schematic diagram of the power module of the test device based on the airborne combined receiving equipment in the embodiment of the utility model.

[0025] The following specific embodiments will further illustrate the utility model in combination with the above-mentioned drawings. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings. The drawings show several embodiments of the utility model. However, the utility model can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0027] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0029] In order to solve the problem that the test of airborne combination receiving equipment in the prior art needs to be tested separately, resulting in a long test time and high cost, the utility model provides a test device based on the airborne combination receiving equipment, wherein the radio frequency generation module, microwave change module, function carrier module, human-computer interaction module and interface signal modulation module realize communication with the main control module through the function carrier module; the main control module can control the radio frequency generation module to provide the target radio frequency signal output according to the input of the human-computer interaction module, and control the microwave change module to select the corresponding microwave output port, thereby providing the target radio frequency signal to the corresponding receiving port of the airborne combination receiving equipment to realize the simulation of the corresponding function; the function carrier module also includes an analog-to-digital converter, which can obtain the navigation information generated by the airborne combination receiving equipment based on the received radio frequency signal through the interface signal modulation module, and different microwave change channels can be selected according to different needs, so as to realize the combined test of various functions of the airborne combination receiving equipment, and the integration of each module is high, which can effectively reduce the overall implementation cost of its full-function test.

[0030] Specifically, if Figure 1 and Figure 2 As shown, the test device based on the airborne combined receiving device of this embodiment includes: a main control module 10, a radio frequency generation module 20, a microwave change module 30, a functional carrier module 40, a human-computer interaction module 50, an interface signal modulation module 60 and a power supply module 70, wherein the main control module 10, the radio frequency generation module 30, the microwave change module 40, the human-computer interaction module 50 and the interface signal modulation module 60 are all communicatively connected to the functional carrier module 20, and the functional carrier module 20 performs signal conversion according to the communication protocol of each part, or serves as a transfer of communication signals, which can match the communication requirements between each module and the main control module 10, and can facilitate the layout of each module on the integrated circuit board, avoiding the overall physical layout being too concentrated.

[0031] The power supply module 70 is used to supply power to other modules. According to the working power requirements of each module, it can obtain power outputs of various specifications by converting the mains power.

[0032] Among them, the main control module 10 includes an embedded processing system that can provide target radio frequency information, channel selection control signals and working mode control signals to the radio frequency generation module 30, the microwave change module 40 and the airborne combined receiving device 300 according to the interaction information of the human-computer interaction module 50. The embedded processing system includes a XAZU3EG processor chip, which can meet the control requirements. The human-computer interaction module 50 includes a keyboard and a display.

[0033] The RF generation module 30 includes a RF chip that can generate a target RF signal based on the target RF information, and the RF output end is connected to the input end of the microwave variation module 40, wherein the target RF signal includes an MLS signal, an ILS signal, a DVOR signal and a MARK signal. The specific output can be confirmed according to the current test item.

[0034] The microwave change module 40 includes two change channels, each of which includes a microwave input port 401 and two microwave output ports 402, and an attenuator 411 and a dual-output selection switch 412 are connected in sequence between the microwave input port 401 and the microwave output port 402. The control end of the dual-output selection switch 412 is communicated with the main control module 10 through the functional carrier module 20 to receive the channel selection control signal. The microwave output port 402 is connected to the interface signal modulation module 60 to be connected to the airborne combined receiving device 300 through the interface signal modulation module 60. The control ends of the attenuator 411 and the dual-output selection switch 412 are integrated into the industrial control end 403 of the microwave change module 40, and the industrial control end 403 also includes wiring for power supply and data feedback.

[0035] The control end of the attenuator 411 is connected to the functional carrier module 20 via an IIC interface, so as to communicate with the main control module 10 through the functional carrier module 20, thereby adjusting the attenuation value according to the attenuation control signal provided by the main control module 10. Specifically, the main interface definition between the microwave changing module 40, the functional carrier module 20 and the RF generation module 30 is as follows: Figure 3 shown.

[0036] During the test, the test device and the airborne combined receiving device 300 are directly connected via a cable. The simulated RF signal is transmitted directly to the corresponding port of the airborne combined receiving device 300, lacking the spatial attenuation of actual wireless transmission. The placement of attenuator 411 simulates actual attenuation conditions, ensuring the reliability of the test. The actual attenuation of attenuator 411 can be set according to the simulation requirements and can be adjusted based on the type of target RF signal by receiving relevant control signals provided by the main control module 10.

[0037] Among them, the ILS signal includes two types: localizer (LOC) signal and glide slope (Gs) signal. During testing, they can be transmitted simultaneously through the two change channels of the microwave change module 40, thereby realizing a complete simulation of the instrument landing system navigation.

[0038] The functional carrier board module 20 further comprises an analog-to-digital converter connected to the interface signal modulation module 60 to be connected to the airborne combined receiving device 300 through the interface signal modulation module 60 to collect the navigation information obtained by the airborne combined receiving device 300 according to the received radio frequency signal processing and upload to the host module 10 to process and analyze the collected navigation information to determine whether the navigation function of the airborne combined receiving device 300 is normal. Specifically, the analog-to-digital converter can adopt ADS1113 type chip.

[0039] The interface signal modulation module 60 is mainly used for voltage modulation of the communication signal between the test device and the airborne combined receiving device 300 to avoid different signal level specifications from causing communication and collection to fail to achieve the expected effect. Specifically, the interface signal modulation module 60 comprises a resistance voltage dividing circuit and an operational amplifier circuit. The operational amplifier circuit converts the voltage specification based on an operational amplifier, and the resistance voltage dividing circuit reduces the voltage signal to avoid damage to the receiving side caused by the voltage of the signal transmitting side being greater than the load capacity of the signal receiving side. The specific resistance and operational amplifier processing ratio can be designed according to the signal specifications of both sides of each modulation channel, which is not particularly limited in the present application.

[0040] According to the specific configuration of the airborne combined receiving device applicable to the present embodiment, the interface signal modulation module 60 of the present embodiment comprises 3 28V input channels, 2 28V output channels, 9 TTL signal input channels, 9 TTL signal output channels, 4 analog channels (corresponding one-to-one to the four microwave output ports of the microwave change module 40), and 2 voice signal channels. The communication direction of the input channel is directed to the functional carrier board module 20, and the communication direction of the output channel is directed to the airborne combined receiving device 300. The 28V working power supply can be provided for the test device and the airborne combined receiving device 300 at the same time, and the communication and data collection requirements therebetween can be met.

[0041] To facilitate human-computer interaction, the human-computer interaction module is provided with a keyboard and a display. In order to avoid interface line failure from causing the inability to control, in the present embodiment, the functional carrier board module 20 is provided with a main keyboard interface and a backup keyboard interface. When the main keyboard interface fails, the backup keyboard interface can be selected as an alternative to ensure the redundant reliability of actual interaction input. The main keyboard interface and the backup keyboard interface can select an RS232 interface.

[0042] The functional carrier board module 20 is further provided with a main radio frequency control interface and a backup radio frequency control interface to communicate and connect with the radio frequency generation module 30 through any one of the main radio frequency control interface and the backup radio frequency control interface to improve the effectiveness of radio frequency generation control. Specifically, the radio frequency generation module 30 can select an XC7Z020CLG484 type chip to analyze the target radio frequency information and then control an ADRV9002 type chip to output analog target radio frequency signals.

[0043] The functional carrier board module 20 is further provided with an audio output unit, which is in communication connection with the interface signal modulation module 60 and the main control module 10, and is used for playing the voice navigation information received by the airborne combined receiving device 300 to test the voice communication and analysis functions of the airborne combined receiving device 300.

[0044] According to the actual power demand, the power module 70 includes a first conversion unit, a second conversion unit and a third conversion unit, the first conversion unit is used for converting the mains into 12V direct current, the second conversion unit is used for converting the mains into 115V / 400Hz specification alternating current, and the third conversion unit is used for converting the mains into 28V direct current. The 12V direct current is mainly used for power supply of the testing device, which is convenient for the testing device to adopt direct current to direct current voltage conversion chip for voltage conversion and voltage stabilization to provide various specifications of working voltage for the internal chips; the 28V direct current is mainly used for adapting the power specification of the aviation system of the airborne combined receiving device 300; and the 115V / 400Hz specification alternating current is mainly used for the working power supply of the internal power control of the airborne combined receiving device 300, and the interface and cable are arranged separately. In a specific example, the structure of the power module 70 is as shown in Figure 4 The 115V and 28V output lines are further provided with power indicator lamps (Lamp1, Lamp2), and the output lines of the respective power modules are respectively provided with contact switches (K1-115V, K2-28V, K0-12V) of corresponding specifications.

[0045] In order to adapt to the aviation communication protocol of the airborne combined receiving device 300, the functional carrier board module 20 further includes an Arinc429 transceiver circuit and a 1553B communication circuit for communication with the airborne combined receiving device 300, and the Arinc429 transceiver circuit includes a HI-8596PSIF type chip and a HI-8444PSIF type chip.

[0046] In order to facilitate the debugging of the main control module 10, the embedded processing system further includes a miniDP interface and a LAN interface, which are connected to the XAZU3EG processor chip of the embedded processing system, and can be respectively used as an emergency power supply and a local area network data interaction, and a USB interface can also be provided, which is convenient for exporting the test data to a USB storage device and transferring to an external computer device, and is convenient for the external computer device to manage the test data.

[0047] The radio frequency generating module, the microwave changing module, the function carrier plate module, the man-machine interaction module and the interface signal modulation module of the test device based on the airborne combined receiving equipment provided by the utility model realize communication to the main control module through the function carrier plate module; the main control module can control the radio frequency generating module to provide target radio frequency signal output according to the input of the man-machine interaction module, and control the microwave changing module to select the corresponding microwave output port, so as to provide the target radio frequency signal to the corresponding receiving port of the airborne combined receiving equipment, realize simulation of the corresponding function; the function carrier plate module further comprises an analog-digital converter, and obtains the navigation information generated by the airborne combined receiving equipment based on the received radio frequency signal through the interface signal modulation module, so that combined test of each function of the airborne combined receiving equipment can be realized, the integration degree is high, and the overall implementation cost of full function test can be effectively reduced.

[0048] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0049] The above-described embodiments only express several specific implementation manners of the present utility model, the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the present utility model patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present utility model, a number of modifications and improvements can be made, which belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent should be subject to the appended claims.

Claims

1. A test device based on an airborne combined receiving device, characterized in that: The test device includes: a main control module, a radio frequency generation module, a microwave change module, a function carrier module, a human-computer interaction module, an interface signal modulation module and a power supply module, wherein: The main control module, the radio frequency generation module, the microwave conversion module, the human-computer interaction module and the interface signal modulation module are all communicatively connected to the functional carrier module, and the power supply module is used to supply power to the other modules; The main control module includes an embedded processing system that can provide target radio frequency information, channel selection control signals, and working mode control signals to the radio frequency generation module, the microwave change module, and the airborne combined receiving device respectively according to the interaction information of the human-computer interaction module. The embedded processing system includes a XAZU3EG processor chip, and the human-computer interaction module includes a keyboard and a display; The RF generation module includes a RF chip that can generate a target RF signal according to the target RF information, and the RF output end is connected to the input end of the microwave transformation module, wherein the target RF signal includes an MLS signal, an ILS signal, a DVOR signal and a MARK signal; The microwave changing module includes two changing channels, each of which includes a microwave input port and two microwave output ports, and an attenuator and a dual-output selection switch are sequentially connected between the microwave input port and the microwave output port. The control end of the dual-output selection switch is communicatively connected to the main control module through the functional carrier module to receive the channel selection control signal. The microwave output port is connected to the interface signal modulation module to be connected to the airborne combined receiving device through the interface signal modulation module. The functional carrier board module further includes an analog-to-digital converter, which is connected to the interface signal modulation module so as to be connected to the airborne combined receiving device through the interface signal modulation module.

2. The test device based on the airborne combined receiving device according to claim 1, characterized in that: The interface signal modulation module includes a resistor voltage divider circuit and an operational amplifier circuit.

3. The test device based on the airborne combined receiving device according to claim 1, characterized in that: The control end of the attenuator is connected to the function carrier module via an IIC interface, so as to be communicatively connected with the main control module via the function carrier module, thereby adjusting the attenuation value according to the attenuation control signal provided by the main control module.

4. The test device based on the airborne combined receiving device according to claim 1, characterized in that: The function carrier board module is provided with a main keyboard interface and a standby keyboard interface.

5. The test device based on the airborne combined receiving device according to claim 1, characterized in that: The function carrier module is provided with a main radio frequency control interface and a backup radio frequency control interface, so as to be communicatively connected with the radio frequency generation module through any one of the main radio frequency control interface and the backup radio frequency control interface.

6. The test device based on the airborne combined receiving device according to claim 1, characterized in that: An audio output unit is also provided on the functional carrier module, and the audio output unit is communicatively connected with the interface signal modulation module and the main control module.

7. The test device based on the airborne combined receiving device according to claim 1, characterized in that: The power supply module includes a first conversion unit, a second conversion unit and a third conversion unit. The first conversion unit is used to convert the mains power into 12V DC power, the second conversion unit is used to convert the mains power into 115V / 400Hz AC power, and the third conversion unit is used to convert the mains power into 28V DC power.

8. The test device based on the airborne combined receiving device according to claim 1, characterized in that: The analog-to-digital converter includes an ADS1113 chip.

9. The test device based on the airborne combined receiving device according to claim 1, characterized in that: The functional carrier board module also includes an Arinc429 transceiver circuit and a 1553B communication circuit for communicating with the airborne combined receiving device. The Arinc429 transceiver circuit includes a HI-8596PSIF chip and a HI-8444PSIF chip.

10. The test device based on the airborne combined receiving device according to claim 1, characterized in that: The embedded processing system further comprises a miniDP interface and a LAN interface connected to the XAZU3EG processor chip.

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