CN112557799A - Comprehensive CNI system testing device - Google Patents
Comprehensive CNI system testing device Download PDFInfo
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
A comprehensive CNI system test device, wherein, the said comprehensive CNI system test host computer includes radio frequency functional module combination, high simulator, main control computer and signal interface, the said radio frequency feeder used for detecting the measured object is connected with comprehensive CNI system test host computer, and connect with the test attachment used for preventing the no-load state from launching the signal and damaging the measured object on the measured object, the said comprehensive CNI system test interface adapter is connected with comprehensive CNI system test host computer, measured object separately; meanwhile, a comprehensive management program is loaded in the comprehensive CNI system test host, and the comprehensive management program is developed by adopting a signal-oriented general automatic test program; the test problem of the traditional comprehensive CNI system is effectively solved, the secondary development capability and the proper expansion capability of a user on the test program are realized, and the user can simply upgrade the test program on the basis of the existing automatic test program so as to meet the test requirement of product change.
Description
Technical Field
The invention relates to the technical field of test instruments, in particular to a test device of a comprehensive CNI system.
Background
The CNI is a short for communication navigation identification system, is an important component in an avionics system, and with the rapid development of electronic technology, the technology is developing towards the direction of integration, modularization and digitization, and the integrated CNI system has considerable difference from the traditional CNI system and is converting from equipment level to module level. The high-speed development of the aviation radio technology, the technical complexity is increased, the types of airborne equipment are various, the test requirements are increased, the product updating is fast, the existing test equipment and test means cannot keep up with the product updating speed, the test guarantee capability is seriously lagged, a long time is usually needed from the first-generation product test to the corresponding test guarantee test equipment, the equipment is usually in place, the peak period of the test requirements is passed, and the equipment cannot be fully utilized. Meanwhile, the traditional test equipment cannot meet the test of the comprehensive CNI system, and the scheme of the comprehensive CNI system test equipment provided by a finished product factory adopts a plurality of traditional test instruments, special test interfaces and a software architecture, so that the cost is high, the specificity is strong, and the equipment matching cannot be kept up with due to lack of purchase cost.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a testing apparatus for integrated CNI system to solve the above problems in the background art.
The technical problem solved by the invention is realized by adopting the following technical scheme:
a comprehensive CNI system test device comprises a comprehensive CNI system test host, a radio frequency feeder, a test accessory, a tested object and a comprehensive CNI system test interface adapter, wherein the comprehensive CNI system test host comprises a radio frequency functional module combination, a height simulator, a main control computer and a signal interface, the radio frequency feeder for detecting the tested object is connected with the comprehensive CNI system test host, the tested object is connected with the test accessory for preventing a signal emitted in a no-load state from damaging the tested object, and the comprehensive CNI system test interface adapter is respectively connected with the comprehensive CNI system test host and the tested object; meanwhile, a comprehensive management program is loaded in the test host of the comprehensive CNI system, and the comprehensive management program is developed by adopting a signal-oriented general automatic test program.
In the invention, the radio frequency functional module combination comprises an RF signal generator, an RF signal analyzer, a Takang simulator, a compass simulator, a pointing beacon simulator, an instrument landing simulator, a microwave landing simulator and an empty pipe responder simulator.
In the invention, the main control computer comprises a zero slot controller, an AF signal generator, an AF signal analyzer, an ARINC429 bus, an RS422 bus, a CAN bus, a discrete IO and a power module.
IN the present invention, the signal interfaces include RF OUT, RF IN/OUT, AF IN, and low frequency interfaces.
In the invention, the integrated CNI system test host is also provided with a touch display screen which can be independently used as a universal device, and different test cables or integrated CNI system test interface adapters can be designed according to other application requirements for testing other radio navigation system products or integrated CNI systems.
In the invention, the test interface adapter of the comprehensive CNI system comprises a power supply input interface, a voltage/current metering interface, a front cabin/rear cabin/ground service earphone microphone interface, an audio input interface, an audio output interface, an RS422/ARINC429 bus interface, a soft destruction/hard destruction interface, a grounding interface, a test cable interface, a power supply control, a PTT control, a discrete control and a test cable.
IN the invention, the radio frequency feeder line is connected to an external radio frequency port RF OUT of the integrated CNI system test host machine through six receiving-only radio frequency ports of an altimeter receiving X13, a beacon receiving X8, a compass receiving X14, a meter heading receiving X11, a meter sliding receiving X10 and a microwave landing receiving X15 aiming at a tested object IN a time-sharing manner, one transmitting-only radio frequency port of an altimeter transmitting X9 aiming at the tested object is connected to an external radio frequency port RF IN of a radio communication navigation system test station, and four receiving-transmitting radio frequency ports of an ultrashort wave transmitting and receiving X7, an L frequency band upper transmitting and receiving X5, an L frequency band lower transmitting and receiving X6 and a communication antenna lower transmitting and receiving X12 aiming at the tested object are connected to the external radio frequency port RF IN/OUT of the integrated CNI system test host.
In the invention, the comprehensive CNI system test host has 1 path of 28V power supply and 1 path of 5V power supply.
In the invention, the comprehensive CNI system test interface adapter realizes conversion through a three-position power switch.
In the invention, in order to avoid the source short circuit, the comprehensive CNI system test interface adapter is designed in a double-line mode, so that the mutual interference between the comprehensive CNI system test interface adapter and the comprehensive CNI system test host is ensured.
Has the advantages that: the invention effectively solves the test problem of the traditional comprehensive CNI system, overcomes the defect of specificity of the traditional special test equipment, has secondary development capability and proper expansion capability of a user on the test program, and can simply upgrade the test program by modifying basic parameters of the equipment, increasing or reducing test items, modifying interpretation standards and the like on the basis of the traditional automatic test program so as to meet the test requirement of simple change of products; and the test host computer of the comprehensive CNI system and the test interface adapter of the comprehensive CNI system can be used independently respectively, and can be upgraded to the test of similar functions of the non-dense parts in other comprehensive CNI systems independently respectively, the combination is flexible, the influence on production caused by the fault of a certain part, the inspection and the like is avoided, and the applicability is strong.
Drawings
FIG. 1 is a block diagram of the testing principle of the preferred embodiment of the present invention.
Fig. 2 is a schematic front structure diagram of an integrated CNI system test interface adapter according to a preferred embodiment of the present invention.
Fig. 3 is a schematic side view of an integrated CNI system test interface adapter according to a preferred embodiment of the present invention.
Fig. 4 is a schematic diagram of switching radio frequency signals according to a preferred embodiment of the invention.
Fig. 5 is a schematic diagram illustrating a power supply control principle according to a preferred embodiment of the invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.
Referring to fig. 1-5, a comprehensive CNI system testing device includes a comprehensive CNI system testing host 1, a radio frequency feeder 2, a testing accessory 3, a tested object 4, a first testing cable 5, a comprehensive CNI system testing interface adapter 6 and a second testing cable 7, wherein the comprehensive CNI system testing host 1 includes a radio frequency functional module combination (RF signal generator, RF signal analyzer, tacan simulator, compass simulator, pointing beacon simulator, instrument landing simulator, microwave landing simulator, air traffic control simulator), a height simulator, a main control computer (null slot controller, AF signal generator, AF signal analyzer, ARINC429 bus, RS422 bus, CAN bus, discrete IO, power module), signal interfaces (RF OUT, RF IN/OUT, AF IN, low frequency interface) and a touch display screen, the test cable can be independently used as general equipment, and different test cables or integrated CNI system test interface adapters 6 can be designed according to other application requirements and used for testing other radio navigation system products or integrated CNI systems; the integrated CNI system test interface adapter 6 is shown in fig. 2 and fig. 3, and includes a power input interface, a voltage/current metering interface, a front cabin/rear cabin/ground service earphone microphone interface, an audio input interface, an audio output interface, an RS422/ARINC429 bus interface, a soft/hard destruction interface, a ground interface, a test cable interface, a power supply control, a PTT control, a discrete control, a test cable, etc., and can complete a pre-installation test of the functions of the non-secret part (including ultrashort wave a/ultrashort wave B voice communication, radio height measurement, radio compass, radio beacon, instrument landing, microwave landing, tacan, navigation response, intercom/audio processing, a key-destroying time secret box, a CNI display control box, etc.) in the integrated CNI system together with the integrated CNI system test host 1 and the test cable, which includes a function and performance index test, the test of the above functions of the integrated CNI system can be completed by matching with a test cable and other general test equipment; the radio frequency feeder 2 is connected to an external radio frequency port RF OUT of the integrated CNI system test host 1 through time sharing for six receiving radio frequency ports, namely an altimeter receiving X13, a beacon receiving X8, a compass receiving X14, a meter heading receiving X11, a meter sliding receiving X10 and a microwave landing receiving X15, of the tested object 4, one transmitting radio frequency port, namely an altimeter transmitting X9, of the tested object 4 is directly connected to an external radio frequency port RF IN of the radio communication navigation system test station, and four receiving radio frequency ports, namely an ultrashort wave transmitting X7, an L-band (upper) transmitting and receiving X5, an L-band (lower) transmitting and receiving X6 and a communication antenna (lower) transmitting and receiving X12, of the tested object 4 are connected to the external radio frequency port RF IN/OUT of the integrated CNI system test host 1 through time sharing, as shown IN fig. 4; the first test cable 5 is used for signal cross-linking of the integrated CNI system test host 1 and the integrated CNI system test interface adapter 6; the second test cable 7 can be used for signal cross-linking of the integrated CNI system test host 1 and the tested object 4, and can also be used for signal cross-linking of the integrated CNI system test interface adapter 6 and the tested object 4; the test accessory 3 comprises 5 radio frequency signal connecting ends of a load for connecting an ultrashort wave transceiving X7, an L frequency band (upper) transceiving X5, an L frequency band (lower) transceiving X6, a communication antenna (lower) transceiving X12 and an altimeter transmitting X9, so that the damage of a tested object 4 caused by a signal transmitted in a no-load state is avoided, and if one of the 5 functions needs to be tested, the test accessory needs to be connected to a corresponding interface of the comprehensive CNI system test host 1 or other corresponding general test equipment under the condition of power failure; the power supply control principle is as shown in fig. 5, the integrated CNI system test host 1 has 1 path of 28V power supply and 1 path of 5V power supply, the 28V power supply is switched to a normal 28V power supply, an emergency 28V power supply, a key destroying 28V power supply and a standby 28V lighting power supply which are 4 paths of 28V power supply, the 5V power supply is switched to a front cabin 5V lighting and a rear cabin 5V lighting through a switch, and the power supply switching in the integrated CNI system test host 1 is realized through a discrete IO board, a high-power relay and software control;
the integrated CNI system test interface adapter 6 is realized by a three-position power switch, when the three-position switch is arranged at the position of a 'host', the product power supply is from the inside of the integrated CNI system test host 1, software can be automatically controlled during testing, when the three-position switch is arranged at the position of a 'panel', the product power supply is from the external power supply input of the panel interface, and simultaneously a corresponding power supply is switched on, and when the three-position switch is arranged at the position of 'off', the power supply is at the off position, and the product power supply is completely switched off; the integrated CNI system test interface adapter 6 and the first test cable 5 realize the switching, monitoring and manual control of 132 paths of input/output signals, and 3 audio input/output signals, bus signals, power input and voltage/current metering jacks, earphone microphone interfaces and normal/emergency/destruction keys of a high-power switch are distributed on the front panel of the integrated CNI system test interface adapter 6, 3 lighting power switches, 3 starting switches, 6 PTT buttons, 10 discrete control switches and 6 audio input source change-over switches are arranged on the back surface of the integrated CNI system test interface adapter 6, and an ARINC429 bus interface 61, an RS422 bus interface 62, an XS2 interface 63 and an XS1 interface 64 are arranged on the back surface of the integrated CNI system test interface adapter;
when the integrated CNI system test interface adapter 6 is connected with a test device in a test station host for use, signals can be monitored in a panel jack of the integrated CNI system test interface adapter 6, and when the integrated CNI system test interface adapter 6 is manually tested together with other general test devices with similar functions, the integrated CNI system test interface adapter 6 is designed with double lines to avoid source short circuit, so that mutual interference between the integrated CNI system test interface adapter 6 and the integrated CNI system test host 1 is ensured.
In this embodiment, the integrated CNI system test host 1 is loaded with an integrated management program, which is developed by a signal-oriented general automatic test program, and is constructed with a signal capability interface conforming to the IEEE 1641 standard to form a resource signal capability library of the whole test platform, and each instrument implements specific operations on test signals by signal-oriented driving; during the test operation of the signal-oriented general automatic test program, the signal requirement of the test program and the signal capability of a platform instrument are automatically analyzed by a test diagnosis engine, and the execution of test logic and the calling of instrument signal driving are automatically completed on the basis of test data meeting the IEEE 1671 standard, so that the whole test task is completed; the universal instrument software receives the SCPI command of the comprehensive management program and can carry out program control so as to complete the automatic test function; avionics system simulation software simulates an avionics system to send and receive data through ARINC429 and RS422 buses; the automatic test of the signal-oriented general automatic test program is mainly applied to the detection of less manual intervention parts (systems), the automatic test function is realized by loading the signal-oriented general automatic test program, a user can screen the signal-oriented general automatic test program, the signal-oriented general automatic test program detects the parts (systems) according to the test flow of a module to be tested, a test operation engine is called, the test flow is executed, the functions and the performance of the parts are automatically checked, the test information is displayed in real time, the test results are compared and automatically recorded, the test results can be stored or not stored after the test is finished, and the test data cannot be modified by any authorized user after the data is stored.
In this embodiment, the items that can be tested by the integrated CNI system testing apparatus include:
1) ultra short wave voice communication (A, B dual radio): working frequency, carrier output power, receiver voice sensitivity, lifesaving receiving sensitivity, squelch hysteresis, audio output, audio distortion, AM modulation degree, FM modulation frequency deviation, amplitude modulation distortion degree and frequency modulation distortion degree;
2) radio height measurement, namely, alarming for working frequency, height measurement precision, height measurement sensitivity and low limit height;
3) working frequency, receiving sensitivity, directional precision, directional speed, audio output and far and near station conversion indication;
4) radio beacon: receiving sensitivity, audio output;
5) instrument landing: course LOC receiving sensitivity, course LOC center indication precision, course LOC deviation sensitivity, glide GS receiving sensitivity, glide GS center indication precision and glide GS deviation sensitivity;
6) microwave landing: receiving sensitivity, microwave landing azimuth precision and microwave landing elevation precision;
7) takang: the method comprises the following steps of (1) measuring the space mode transmitting power, the space azimuth, the space distance, the TACAN navigation identification tone and the space distance precision;
8) and (3) navigation management response: response range, response mode, working frequency and antenna port transmitting power;
9) built-in call/audio processing: frequency response, audio harmonic distortion, audio input and output amplitude;
10) CNI shows accuse box: display picture, "day/night" mode switching, illumination brightness adjustment;
11) static power consumption: the host static power consumption in a normal state, the host static power consumption in an emergency state and the display control box static power consumption;
12) destroying the key and sealing the box: soft destroy signal, hard destroy signal.
Claims (10)
1. A comprehensive CNI system test device comprises a comprehensive CNI system test host, a radio frequency feeder, a test accessory, a tested object and a comprehensive CNI system test interface adapter, and is characterized in that the comprehensive CNI system test host comprises a radio frequency functional module combination, a height simulator, a main control computer and a signal interface, the radio frequency feeder for detecting the tested object is connected with the comprehensive CNI system test host, the tested object is connected with the test accessory for preventing a signal emitted in an idle state from damaging the tested object, and the comprehensive CNI system test interface adapter is respectively connected with the comprehensive CNI system test host and the tested object; meanwhile, a comprehensive management program is loaded in the test host of the comprehensive CNI system, and the comprehensive management program is developed by adopting a signal-oriented general automatic test program.
2. The integrated CNI system testing device of claim 1, wherein said RF functional module combination comprises an RF signal generator, an RF signal analyzer, a tacan simulator, a compass simulator, a pointing beacon simulator, a meter landing simulator, a microwave landing simulator and an empty pipe responder simulator.
3. The integrated CNI system testing device of claim 1, wherein said master control computer comprises a zero slot controller, an AF signal generator, an AF signal analyzer, an ARINC429 bus, an RS422 bus, a CAN bus, a discrete IO and a power module.
4. The integrated CNI system test device of claim 1, wherein said signal interfaces comprise RF OUT, RF IN/OUT, AF IN, and low frequency interfaces.
5. The integrated CNI system testing device of claim 1, wherein a touch screen is further disposed on the integrated CNI system testing host.
6. The integrated CNI system testing device of claim 1, wherein the integrated CNI system testing interface adapter comprises a power input interface, a voltage/current metering interface, a front/rear/ground service earphone microphone interface, an audio input interface, an audio output interface, an RS422/ARINC429 bus interface, a soft/hard destroyed interface, a ground interface, a testing cable interface, a power supply control, a PTT control, a discrete control and a testing cable.
7. The integrated CNI system testing device of claim 1, wherein the radio frequency feeder line is connected to an external radio frequency port RF OUT of the integrated CNI system testing host through time sharing for six receiving-only radio frequency ports of an altimeter receiving X13, a beacon receiving X8, a compass receiving X14, a meter heading receiving X11, a meter down-sliding receiving X10 and a microwave landing receiving X15 of the tested object, one transmitting-only radio frequency port of an altimeter transmitting X9 of the tested object is directly connected to an external radio frequency port RF IN of the radio communication navigation system testing station, and four receiving-transmitting radio frequency ports of an ultrashort wave transmitting and receiving X7, an L-band transmitting and receiving X5, an L-band transmitting and receiving X6 and a communication antenna down-transmitting and receiving X12 of the tested object are connected to an external radio frequency port RF IN/OUT of the integrated CNI system testing host through time sharing.
8. The integrated CNI system test device of claim 1, wherein the integrated CNI system test host has 1-way 28V power supply and 1-way 5V power supply.
9. The integrated CNI system test device of claim 1, wherein the integrated CNI system test interface adapter is switched by a three-position power switch.
10. The integrated CNI system test device of claim 1, wherein the integrated CNI system test interface adapter is a two-wire design.
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| CN113343621A (en) * | 2021-06-15 | 2021-09-03 | 南京熊猫汉达科技有限公司 | Automatic test system of short wave comprehensive digital platform |
| CN116388892A (en) * | 2023-05-22 | 2023-07-04 | 中国电子科技集团公司第十研究所 | Automatic test system of comprehensive communication equipment |
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