CN113068449B - General detection equipment for Soviet aircraft photoelectric radar - Google Patents

Abstract

The invention discloses a general detection device for a Su-system airplane photoelectric radar, which comprises a computer, an interface card, a standard signal source, a gating switch, an adapter component and a test cable, wherein a test program comprises a product detection module, a fault diagnosis expert module and an auxiliary function module. The device is in a mobile vehicle-mounted type, can be used for carrying out comprehensive performance test on the integral assembly, the sensor assembly and the digital conversion assembly of the Su-27 photoelectric radar system, can also be used for carrying out performance test on the integral assembly, the sensor assembly and the digital conversion assembly of the Su-30 photoelectric radar system, and can give out fault information in real time according to the requirement of an inspection process. The device has unique and novel design, stable work and strong maneuverability, and can meet the performance detection and debugging requirements of Su-27 and Su-30 special detection and overhaul of the airplane photoelectric radar.

Description

General detection equipment for Soviet aircraft photoelectric radar

Technical Field

The invention relates to an airplane photoelectric radar detection device, which is suitable for detecting the performance of Su-series airplane photoelectric radars.

Background

The photoelectric radar is one of the important components of the Su-series airplane fire control system, and has the main functions of searching, tracking and measuring the distance to a target according to the heat radiation of the target in the air so as to intercept the target. The debugging method of the Su-series airplane photoelectric aiming system mainly aims to detect technical parameters and working states of products such as a photoelectric radar integral component, a sensor component, a digital conversion component and the like in the photoelectric aiming system so as to ensure that the working performance of the products is in the best state and the operational performance of the airplane.

With the introduction of the Su-27 airplane, related detection equipment is also introduced, wherein the introduced Russian optical radar general school instrument 31E-II 1 is specially used for the comprehensive performance test of the integral component, the sensor component and the digital conversion component of the Su-27 photoelectric radar system, and is the key equipment for detecting and maintaining the Su-27 photoelectric radar system at present. Due to the technology of the 70 s, the equipment is operated manually and displays a simple detection result in the using process, the data analysis and processing capability of the detection result is lacked, in fact, the function of the 31E-II 1 general calibrator is mainly suitable for the inspection of the state of the Su-27 photoelectric radar system by an external field and is not completely suitable for the maintenance and detection requirements of an internal field, the equipment is used for nearly 10 years, and the equipment is lack of detailed technical data when being introduced, so that the maintenance of the Su-27 photoelectric radar is difficult once the equipment is in failure, and the maintenance and production of the Su-27 photoelectric radar are directly influenced.

With the introduction of the Su-30 airplane, the task of maintaining and overhauling the Su-30 airplane photoelectric radar system is provided, and the general calibration equipment of the Su-30 photoelectric radar system is not introduced at home at present, so that the development of universal detection equipment for the airplane photoelectric radar is imperative for the reasons.

Disclosure of Invention

The Su-system airplane photoelectric radar universal detection device is compatible with the detection of Su-27 and Su-30 airplane photoelectric radars, is in a mobile vehicle-mounted type, can be used for detecting by directly connecting a connecting cable of the detection device to a corresponding detection interface of an airplane, and is provided with a fault diagnosis special system and a database.

The universal detection equipment comprises a computer, an interface card, a standard signal source, a gating switch, an adapter component, a test cable and a test program, wherein the test program comprises a product detection module, a fault diagnosis expert module and an auxiliary function module. The product detection module integrates an analog signal, a digital signal and a laser energy measurement component, has the functions of checking the working state of the photoelectric radar, a laser signal, a video signal, a direct current signal, a sensor component and a digital conversion component, and consists of a power meter, an energy meter, a display and other equipment and is used for measuring the laser energy emitted by the laser range finder; the fault diagnosis expert module is used for carrying out fault analysis and diagnosis on the detection data, giving out a detection result and positioning faults and consists of a diagnosis knowledge base, an inference machine, a dynamic database and a knowledge acquisition and processing module; the auxiliary function module comprises photoelectric radar detection equipment self-checking, detection result report generation and printing, detection result archiving and query management.

The photoelectric radar detection equipment utilizes an advanced testing technology to replace the function of original Russian-made photoelectric radar general calibration equipment 31E-II 1 utilizing the technology before 70 years, can be used for carrying out comprehensive performance testing on the integral assembly, the sensor assembly and the digital conversion assembly of the Su-27 photoelectric radar system, can also be used for carrying out comprehensive performance testing on the integral assembly, the sensor assembly and the digital conversion assembly of the Su-30 photoelectric radar system, can give out fault information in real time according to the requirements of a detection process, and simultaneously makes up the defect that special equipment can only be used for detecting the overall performance of the Su-27 photoelectric radar.

The device can meet the requirements of electrified detection and debugging of the photoelectric radar of the Su-27, Su-30 special-inspection and overhaul airplanes, can meet the requirements of scheduled inspection and troubleshooting of new aircrafts, and is widely applied to debugging of the photoelectric radar during the overhaul and scheduled inspection of the Su-27 and Su-30 airplanes.

The photoelectric radar detection equipment is miniaturized, intelligent, simple to operate, high in reliability, unique and novel in software design, strong in mobility, stable in work, reasonable in hardware configuration and complete in regulations, becomes the example of successful development of universality and compatibility of imported photoelectric radar detection equipment, and saves 360 million yuan RMB compared with the mode of buying finished product detection equipment abroad.

Drawings

FIG. 1 is a block diagram of a hardware configuration of a detection system

FIG. 2 photoelectric radar operating state detection

Fig. 3 direct current signal measuring circuit 1

Fig. 4 direct current signal measuring circuit 2

FIG. 5 video channel detection

FIG. 6 laser signal detection

FIG. 7 sensor Assembly detection

FIG. 8 digital conversion component detection

FIG. 9 System software architecture Block

FIG. 10 product inspection Module

FIG. 11 troubleshooting expert System framework

FIG. 12 inspection Main interface

FIG. 13 test item interface

FIG. 14 detector interface

FIG. 15 report display interface of the test results

FIG. 16 test record query interface

FIG. 17 shows fault prompt boxes for each test board

Fig. 18 cable connection failure prompt box

Detailed Description

The universal detecting equipment for the photoelectric radar of the Soviet aircraft is realized by a computer, an interface card, a standard signal source, a gating switch, an adapter component, a testing cable, a control cabinet, a laser energy measuring component, a testing cable and automatic testing software of a detecting system.

Typical signal detection method

According to the detection process requirements of the Su-27 and 30 photoelectric radars and the function of a 31E/' II 1 special photoelectric radar general calibration instrument, 21 detection items are totally detected for the performance detection of the Su-27 photoelectric radar whole assembly, the sensor assembly and the digital conversion assembly, and the Su-30 photoelectric radar system is additionally provided with functions of ' irradiating power to the ground ' and the like except the same detection items (but different detection contents), and 22 detection items are totally detected.

According to the specific detection content of 22 items, more than 170 signals are involved, and the main parts are photoelectric radar working state parameter inspection, laser and video signal performance inspection, system power supply inspection, sensor component performance inspection, digital conversion component performance inspection and the like. The signals involved are in the form of: direct current voltage (stable value), disposable instruction signals (+5V, +27V and the like), 32-bit serial codes (communication between a photoelectric radar and an upper computer), video noise signals, alternating current periodic signals, laser narrow pulse width (width is 0.35-4.1 us) signals and the like.

1. Photoelectric radar working state parameter detection

The hardware structure is as shown in fig. 2, and the industrial personal computer controls the 32-bit serial code interface card to send instructions corresponding to various working states (large-field scanning, small-field scanning, target scanning with or without target scanning, interception, tracking and the like) to the photoelectric radar. And receiving the 32-bit serial code sent by the photoelectric radar in each working state, decoding a specific numerical value of each physical quantity, automatically judging whether the working state of the photoelectric radar is normal or not according to the technical standard specified by the process file, displaying the working state, and displaying related information when the working state is abnormal. All physical parameter records of the photoelectric radar are stored so as to be consulted and analyzed in real time.

2. Direct signal (DC signal, one-time command) detection

Because the amplitude range of the direct current signal is relatively large (minimum-26V, maximum +50V), the error of the signal with the absolute value larger than 10V exceeds +/-1V according to the detection requirement, and therefore, different conditioning circuits are designed in the adapter circuit according to different detection objects.

And the power supply is larger than +/-5V (see figure 3), the resistor is a precision resistor in the figure, and the diode plays a protective role.

Signals less than 5V, or conforming to TTL levels (see fig. 4), can be directly sampled by the a/D.

3. Video signal detection

The video signal detection comprises video signal process output detection and video signal logic output detection. The detection comprises two parts of noise detection and video signal detection of a video channel, wherein the two signal types and detection requirements are different, and the detection principles are also different. Taking the process output of detecting a certain channel signal as an example, as shown in fig. 5, when detecting the noise of a video channel, the noise signal is subjected to isolation amplification, active full-wave rectification and filtering, and then is sent to a/D conversion for collection, and the video signal is subjected to a peak detector and then is subjected to a/D collection. And the video signal logic output detection is directly tested through F/D after signal shaping and filtering.

4. Laser signal detection

The laser signal detection mainly comprises pulse detection of emission and echo signals. And judging the reliability of the laser ranging device by calculating the pulse energy difference between the emission signal and the echo signal. Meanwhile, the time interval between the emission pulse and the echo pulse is measured by decoding the 32-bit serial code, and whether the process condition requirement is met is judged. The principle of measurement of the laser signal is shown in fig. 6.

5. Sensor assembly detection

As shown in fig. 7, the sensor assembly detection mainly detects the working performance of the sensor, the industrial personal computer controls to turn on the power supply required by the sensor assembly, and then the analog signal output by the sensor assembly is sampled by the a/D converter, so that information values corresponding to Wx, Wy and Wz can be obtained, and whether the sensor assembly is qualified or not can be judged.

6. Digital conversion component detection

As shown in fig. 8, the digital conversion module detection function is implemented by sending a corresponding 32-bit serial code to the digital conversion module by the industrial personal computer, providing an analog signal to the digital conversion module as an input value of signals ii x, Wx, Wy and Wz, then realizing corresponding conversion by the digital conversion module, sending out a corresponding 32-bit serial code, receiving the 32-bit serial code by the industrial personal computer, decoding the 32-bit serial code to obtain corresponding ii x, Wx, Wy and Wz signal information, and comparing the signal information with a given analog signal to judge whether the digital conversion module is qualified or not. In addition, the detection of the digital conversion assembly also comprises the detection of a power supply signal, the industrial personal computer sends a check instruction (32 bit serial code) to the digital conversion assembly, and then decodes the received 32 bit serial code to obtain a power supply period value, wherein the required error is within 0.12% (with 2500us as a standard), otherwise, the power supply is unqualified.

Second, test procedure

The test program of the general detection system for the photoelectric radar tests and manages various signals of the photoelectric radar, controls the detection of product performance parameters of the whole assembly, the digital conversion assembly, the sensor assembly, the power supply assembly and the like of the photoelectric radar, receives various signals transmitted by a detected product, and performs data processing and intelligent management.

The general photoelectric radar detection system is composed of a user login management module, a product detection module, a fault diagnosis expert system module and an auxiliary function module, and is shown in fig. 9.

1. The user login management module: for verifying the validity of the operator;

2. detecting a system interactive interface: detecting various input/output interfaces in the system;

3. the product detection module: including the in-situ inspection and the out-of-position inspection of the Su-27 and Su-30 airplane photoelectric radars and the detection of the working state of the part, as shown in figure 10.

The method comprises the following steps: detecting the working state of the component, detecting by a Su-30 MK2 photoelectric radar, detecting by a Su-30 MKK photoelectric radar and detecting by a Su-27 photoelectric radar. The detection of the working state of the component comprises a digital conversion component, a sensor component and a power supply component; the in-situ and off-site detection of the Su-30 MK2 photoelectric radar detection, the Su-30 MKK photoelectric radar detection and the Su-27 photoelectric radar detection.

4. Fault diagnosis expert system module

The fault diagnosis expert system module is used for carrying out fault analysis and diagnosis on the detection data so as to provide a detection result and fault location, and mainly comprises a diagnosis knowledge base, an inference machine, a dynamic database, a knowledge acquisition and processing module and other auxiliary modules. The frame is shown in fig. 11. Wherein the knowledge base and the inference mechanism are the intelligent control parts of the expert system.

1) A diagnostic knowledge base. The diagnosis knowledge base is the core of an expert system and is a database for storing knowledge such as expert knowledge, domain knowledge, experience common knowledge and the like. The knowledge base and the knowledge base management system are designed by adopting a Microsoft Office Access database management system which is used for realizing the systematized organization and management of knowledge, storing, adding, deleting, modifying and inquiring the knowledge, and a mechanism for checking the consistency and the integrity of the knowledge. The ODBC provides an application development interface, so that the application program is independent of a specific database, and information exchange is facilitated.

2) And (4) an inference engine. The main function of the inference engine is to decide how to select the relevant knowledge in the knowledge base, and to infer the evidence provided by the user according to a certain strategy to solve the current problem. The reasoning mechanism determines the level of diagnosis efficiency and the level of knowledge processing, and realizes the function of deriving new information from the existing facts and knowledge, thereby revealing the description about the fault nature contained in the known information. Because deterministic knowledge and fuzzy knowledge exist in fault analysis, different methods are adopted for knowledge reasoning.

a) State chain reasoning, a deterministic forward reasoning process from phenomena to conclusions. The classification frames are organized in a fault tree form, and faults are eliminated step by selecting corresponding phenomena. I.e., state inference, is a selection deduction process from the root to the leaves of the tree. The system combines the classification frame tree obtained by knowledge acquisition into different reasoning pictures according to different properties. And the user carries out field inspection according to the system prompt to determine the fault phenomenon. The system gives a reason for this phenomenon and a recommendation for exclusion. If the fault is not eliminated, other reasons are searched until the fault is eliminated.

b) Fuzzy reasoning is adopted, and a coefficient (namely, reliability) between 0 and 1 is used for representing the fault phenomenon and the fault reason. The coefficient represents both the degree of correspondence between the fault phenomenon and the cause and the degree of knowledge of the different experts involved in the evaluation. Finally, fuzzy reasoning obtains an evaluation fuzzy matrix through weight determination, weighted average model, quantitative index synthesis and the like, and comprehensively decides evaluation results.

3) A dynamic database. The various data records in the dynamic database are diagnosis information obtained from a detection system or a user, and basic facts required by a diagnosis reasoning process are obtained through the processing of the symptom obtaining module. The data comprises the fact input by the user, the known fact, the intermediate result obtained in the reasoning process and the like.

4) The knowledge acquisition and processing module is responsible for processing, sorting, storing and the like of input information.

The conclusion and the maintenance suggestion are that the expert system finally gives the diagnosis result, namely the fault reason, the credibility and the like, and gives the treatment suggestion.

5. An auxiliary function module: the photoelectric radar detection device comprises a photoelectric radar detection equipment self-checking module, a detection result report generation and printing module, a detection result archiving and query management module and the like.

Thirdly, the equipment is formed

The computer takes an industrial personal computer as a core, and integrates a plurality of test modules, namely a 32-bit serial code (ARINC429) board HT-6302, an A/D board PCL-813, a D/A board DAQ6208V, a digital input DI board PCL-733, a digital output DO board PCL-734, a counter board TMC-10, an adapter board and a standard signal source, wherein the test software takes Windows XP as an operating system and is developed and integrated by adopting joint systems such as Visual C + +, Visual Basic and Measurement Studio.

The test program, the adapter and the board card are mainly designed and developed, and part of hardware is selected and modified.

1. Industrial control machine

The method is mainly used for controlling various detection functions, performing system self-checking, processing data and printing detection results. The industrial personal computer is the control core of the whole detection device and is responsible for self-checking of the system, detection of each test state and data processing. The reliability, anti-interference performance and electromagnetic property of the device directly determine various properties of the detection device. Therefore, we chose the product of Industrial Computer 610 from ADVANTECH. The industrial personal computer CPU is PIV1G, a memory 512M and a hard disk 80G. The air flow in the case is controlled by a hot plug cooling fan, can resist impact and oscillation, and can work in the severe environment of dust. In addition, according to the type selection and design of the functional modules, the industrial personal computer also needs to provide a plurality of ISA and PCI slots. While the Industrial Computer 610 has 7 ISA slots and 4 PCI slots, which meets the requirement of detecting each functional module of the device and has certain expandability.

2. Standard signal source

The method is mainly used for self-checking of the detection system. Including a dc standard signal, a standard pulse signal, etc.

3. Interface card

(1) ARINC429 bus board card

And sending a corresponding detection instruction according to various working states of the photoelectric radar, and receiving 32-bit serial parameters output by the photoelectric radar. According to the working principle of the optical thunder, for the test states of large field scanning, small field scanning, large field searching, small field searching and the like, the detection process of the detection equipment is as follows: the industrial personal computer controls the 32-bit serial code interface card and sends instructions corresponding to various different test states to the photoelectric radar. And receiving the 32-bit serial code returned by the photoelectric radar in each test state, decoding to obtain a specific numerical value of each physical quantity, and judging whether the test state of the photoelectric radar is normal or not according to the detection process specification.

When the 23C/01 test state is detected, a 32-bit serial code interface board card is also required to send 429 instructions and receive 429 information codes, but the 32-bit serial code interface board card is different from an interface of test state 429 codes of the optical fiber and the optical fiber. In order to avoid mutual interference and interface switching and expand subsequent functions, the detection device requires that the 32-bit serial code at least has the functions of 2 sending and 2 receiving, so that an HT-6302 ARINC429 bus board is selected.

(2) DO board card

According to the requirements of detection equipment, the PCL-734 is selected, the PCL-734 can provide an isolation digital input channel and an isolation digital output channel, the isolation protection voltage can reach 2500VDC, and the method is an ideal choice for high-voltage isolation industrial application. The card is a digital isolation output card based on an ISA bus, and has 32 paths of digital output. Furthermore, all output channels provide high voltage protection.

In video signal detection, two parts of noise and a video signal of a video channel need to be detected, the two signal types and detection requirements are different, and the detection principles are also different. Taking a certain channel as an example, as shown in fig. 6, when detecting the noise of the video channel, the noise signal is acquired by the a/D board after being subjected to active full-wave rectification and filtering. The video signal can be directly A/D collected. Because the video signals of 64 channels are shared by the optical lightning, if each channel is connected with the A/D, the resource is greatly wasted, so that the 64 channels are divided into 8 groups by using a matrix switch to respectively detect the channel noise and the video signals, and the control of the matrix switch is to realize the control of the relay through DO digital output.

(3) DI board selection type

Considering that the detection device needs to detect a large number of direct current signals, and the a/D resources are limited, for this reason, some direct current signals of the optical radar have low precision requirements, or for signals conforming to the TTL level, the method shown in fig. 4 may be adopted to perform detection. Partial analog signals are subjected to voltage division through a precision resistor, the output voltage of the partial analog signals is within the range of TTL level, and the signals can be directly detected through a DI board card after passing through a switch array. On the one hand can reach the purpose that detects like this, and on the other hand has reduceed the requirement of check out test set to the AD integrated circuit board, and DI digital input integrated circuit board uses comparatively conveniently.

In the equipment, the PCL-733 digital isolation input board card is a product of ADVANTECH company, the PCL-733 can provide an isolation digital input channel and an isolation digital output channel, and the isolation protection voltage can reach 2500VDC, so that the PCL-733 digital isolation input board card is an ideal choice for high-voltage isolation industrial application. The card has 32 digital inputs based on ISA bus, and the input logic high level can be in the range of 5-24V. Furthermore, all output channels provide high voltage protection.

4. High-speed data acquisition card

And a pulse trigger acquisition mode is adopted for detecting laser narrow pulses and other pulses.

5. A/D, D/A converter

The method is used for detecting the performance of signals such as direct current signals, one-time command signals, pulse signals, video channel noise signals and the like and providing standard signals.

A DAQ6208 analog output board card is selected, the board card has 8 paths of 16-bit voltage outputs, and meanwhile, the board card also provides 4 paths of digital inputs and 4 paths of digital outputs, so that the use of other functions is facilitated. The analog voltage provided for the digital conversion assembly is provided by the D/A board card. According to the requirement of detection process specification, the standard voltage is-1.67V, and 4 paths of signal outputs are provided in total. In the process of detecting the digital conversion assembly, as shown in fig. 8, the industrial personal computer sends a corresponding 32-bit serial code to the digital conversion assembly, and simultaneously provides an analog signal to the digital conversion assembly as an input value of signals of ii x, Wx, Wy and Wz, then the digital conversion assembly realizes corresponding conversion and sends out the corresponding 32-bit serial code, and the industrial personal computer receives and decodes the 32-bit serial code to obtain corresponding ii x, Wx, Wy and Wz signal information, and the information is compared with a given analog signal to judge whether the digital conversion assembly is qualified or not.

The PCL-813 analog input board card is selected. PCL-813 is a 12-bit 32-way A/D data acquisition card, which is based on ISA bus, and it can provide voltage protection for each analog input, and is an ideal solution for industrial measurement and monitoring. The card provides 32 analog inputs and 2 DC/DC converters on a well grounded four-layer PCB. The optical isolation provides 500VDC tributary isolation protection between the analog input and the PC, and can prevent PC peripheral equipment from being damaged by high voltage on the input line.

The sensor assembly mainly detects the working performance of the sensor, and in the detection process, as shown in fig. 7, the industrial personal computer controls to turn on a power supply required by the sensor assembly, and then the analog signal output by the sensor assembly is sampled by the A/D converter, so that information values corresponding to Wx, Wy and Wz can be obtained, and whether the sensor assembly is qualified or not is judged according to the detection process specification. Meanwhile, the detection equipment also needs to detect a power supply signal of the photoelectric radar. The signals can be directly detected by the A/D board card after certain conditioning, so that the performance of the power supply is judged according to the process specification.

6. Timing trigger counter card

The method is used for detecting the frequency signal and the laser signal and controlling the working time sequence of the whole test system. In the detection of the laser electrical parameter test state, a laser pulse signal is detected, and the pulse width, the pulse amplitude and the pulse number of the signal are mainly detected. And calculating whether the pulse energy meets the requirement or not by detecting the pulse width and the pulse amplitude. The reliability of the laser ranging device can be judged according to the difference between the emission pulse and the echo pulse through the counting of the timing counter, and the time interval information of the emission pulse and the echo pulse can be obtained by decoding a 32-bit serial code (representing a distance value) returned by the laser ranging device in the measuring process, so that whether the process specification is met or not is judged. The principle of measurement of the laser signal is shown in fig. 7.

The pulse width of the laser emission pulse and the echo pulse is 0.35-0.65 us and 0.5-3 us, and the amplitude ranges of the laser emission pulse and the echo pulse are 3.5-5.1V. The pulse width is narrow, but the period is large (82ms), which brings certain difficulties to measurement.

In the detection device, after shaping a laser pulse signal, high-speed sampling is carried out in a pulse width range, the pulse width t is calculated according to a sampling period Ts and the number N of continuous high levels of sampling, wherein t is N Ts, when the highest sampling rate is 8MHZ, the sampling period Ts is 0.125us, when t is 0.5us, N is 40, if N is counted to generate an error of +/-1 word, the error is approximately +/-2.5% during detection, and the measurement requirement of the pulse width can be met.

According to the detection scheme, the highest sampling rate of the timing counter board card is required to be greater than or equal to 8 MHZ. Therefore, a TMC-10 timing counter board card is selected. TMC-10 is a timer/counter and switching value I/O card for PC, it is based on ISA bus, compatible TTL level, the card includes 4 chips 8254 chips, have 8M/1.6M/0.8M/80K total four kinds of internal clock selectable, and can connect the external clock), the multiple timing/counting functional mode that 4 8254 chips provide. 8 independent 16-bit timing/counters and 2 32-bit timing/counters. The board also provides an 8-bit digital output DO.

7. Gating switch array

For the distribution and switching of the various detection functions and signals.

8. Adapter

The device is used for signal isolation, conditioning, distribution and the like so as to meet the detection requirements and ensure the working safety, accuracy and reliability of the test system. The adaptive function and structure are different for different detection objects. The adapter board card is self-developed and mainly has the following functions:

conditioning the signal, such as rectifying, filtering, amplifying, and reducing;

the interface connection is convenient for connecting each board card interface with the optical lightning cable;

designing a matrix switch;

signal monitoring, such as LED display;

designing an adapter board card:

the adapter board card is self-developed and mainly has the following functions:

conditioning the signal, such as rectifying, filtering, amplifying, and reducing;

the interface connection is convenient for connecting each board card interface with the optical lightning cable;

designing a matrix switch;

and monitoring signals, such as LED display.

Fourth, using method of detection equipment

1) Start detection interface

After the mobile phone is started and enters an operating system, the photoelectric radar detection icon on the desktop is double-clicked, that is, the photoelectric radar general detection equipment is started, and then the mobile phone enters the photoelectric radar general detection main interface, as shown in fig. 12. In the interface, the user should input a user name and a password for authentication, and select a detection item. If the user name or the password is input incorrectly, the equipment can not detect the user name or the password as an illegal user, and a prompt dialog box appears, so that the user can input the user name and the password again. Ten detection process item buttons are arranged on the detection interface, a user can enter the corresponding product detection process interface to perform product detection by selecting and clicking a certain detection process item, and when the product detection is finished and the detection interface is returned, the detected detection item is displayed as green to show the difference. For the detection items that have already been detected, repeated detection may be performed.

2) Interface for entering detection project

And clicking any one detection item key on the main interface of the general photoelectric radar detection equipment to enter a corresponding detection item interface. If the 'su-27 photoelectric radar in-situ detection' button is clicked, the su-27 photoelectric radar in-situ detection interface is entered, as shown in fig. 13.

3) Detecting sub-items

The detection item interface comprises operation buttons of all detection sub-items of the detection item, the names of the detection sub-items are displayed on the buttons, and a user can randomly select the sub-items to detect according to needs. During detection, only an item button needs to be clicked, and a corresponding detection interface can be popped up on the right side of the screen. If the button "20 ° × 5 ° small field search (4054)" is clicked, a 20 ° × 5 ° small field search detection interface pops up, as shown in fig. 14.

Note that, in order to avoid detection instruction conflict, in the process of detecting a certain detection sub-item, it is not allowed to simultaneously detect other sub-items on the detection interface. And only after the detection of the sub-item is finished and the detection interface of the sub-item is exited, the detection of other sub-items can be carried out. In addition, the color of the detect sub-item button indicates the detection status of the sub-item, and green indicates that the sub-item is being detected or has been detected.

4) Detection result management

In order to facilitate the management and printing of each detection process result of the photoelectric radar by a user, the general detection equipment for the photoelectric radar is provided with the following auxiliary detection items, including detection result report generation, storage, printing and detection record inquiry.

a. Generating, saving and printing detection result report

After a user completes all the photoelectric radar detection processes such as Su 27 photoelectric radar in-situ state detection, Su 27 photoelectric radar dislocation state detection, Su-30M K photoelectric radar in-situ state detection, Su 30M K photoelectric radar dislocation state detection, Su-30M K2 photoelectric radar in-situ state detection, Su-30M K2 photoelectric radar dislocation state detection and the like, report generation, storage and printing can be carried out on detection results. And recording the detection results of the working states of the photoelectric radar, the total electrical parameters, the detection results of the laser electrical parameters, the detection values of the video signals and the video noise channels and the like in the report.

A user clicks a detection result storage and printing button in a main interface of the in-situ or off-site state detection process of various photoelectric radars, and a detection result storage and printing dialog box appears. The user is asked in the dialog box to first enter the shelf number of the airplane being tested and select the testing category, and then click the "save and print" button. At this time, the detection equipment will automatically generate and open a report file according to the inputted airplane frame number, and automatically fill the detection result into the report, as shown in fig. 15. After the user views the data, the operations such as saving and printing can be carried out. The report file is stored in the form of an Excel file. For the convenience of inquiry, the file name of the report is determined according to the number of the airplane frames. All the generated product report files are stored in a D disk record folder.

b. Detecting record queries

The photoelectric radar detection equipment provides a detection record query function for a user. When the user selects the detection item in the main interface of the detection equipment as "photoelectric radar detection record query", the detection equipment enters the detection record query interface, as shown in fig. 16.

During query, the query can be carried out according to the airplane number and the date. When the airplane number is searched by pressing the airplane number, the number of the airplane number is input, a matching mode is selected, the searching is started by clicking a searching button, and all found files are listed in a file list box on the right side of a searching interface by the system. When the matching is accurate, only the photoelectric radar detection records of the airplane which are completely the same as the input airplane frame number are listed; and when fuzzy matching is carried out, listing all the airplane photoelectric radar detection records of the inquired airplane number in the airplane number of the detected photoelectric radar. In a file list box, the detection record of the airplane photoelectric radar can be opened and displayed by double clicking the airplane frame number to be checked.

When the query is carried out in a mode of searching according to the specified date, all the detection records created or modified between the start date and the end date are listed as long as the date type and the start date and the end date of the detection records are selected. In a file list box, the detection record of the airplane photoelectric radar can be opened and displayed by double clicking the airplane frame number to be checked.

5) Self-test and maintenance

In order to ensure the correctness, reliability and accuracy of each detection process of the test vehicle, the test vehicle can automatically detect the relevant board card on line before detecting the technical performance of each photoelectric radar, and if the board card is found to have a fault, the photoelectric radar detection is stopped and a prompt box appears, as shown in fig. 17. A 32-path isolation digital output board card (PCL-734) fault prompt frame, a 32-path isolation digital input board card (PCL-733) fault prompt frame, a timing/counter board card (TMC-10) fault prompt frame, a 32-path analog/digital output board card (PCL-813) fault prompt frame, a multi-path digital/analog output board card (DAQ6208) fault prompt frame and an ARINC429 bus interface board card (HT-6302) fault prompt frame. Only when each detection is correct, the detection equipment carries out the detection of the corresponding process item.

In addition, since most of the detection items are transmitted and received by 429 serial codes to realize information interaction between the detection system and the photoelectric radar, the universal detection equipment also automatically detects the cable connection, and if the photoelectric radar is found to be faulty or the cable connection between the photoelectric radar and the system is found to be faulty, the system also prompts the fault, as shown in fig. 18, and the system interrupts item detection. After the user checks and reconnects the cable, the item check can be performed again.

Claims (5)

1. The utility model provides a general check out test set of soviet aircraft photoelectric radar, includes computer, interface card, standard signal source, gating switch, adapter subassembly, test module, test cable, its characterized in that:

the test module comprises a product detection module, a fault diagnosis expert module and an auxiliary function module;

the detection equipment is mobile vehicle-mounted, is directly connected to a corresponding detection interface of the airplane through a connecting cable for detection, and is compatible with the detection of Su-27 and Su-30 airplane photoelectric radars;

the system has the function of testing the comprehensive performance of the integral assembly, the sensor assembly and the digital conversion assembly of the Su-27 photoelectric radar system, can also be used for testing the comprehensive performance of the integral assembly, the sensor assembly and the digital conversion assembly of the Su-30 photoelectric radar system, and can give out fault information in real time according to the requirement of an inspection process.

2. The universal testing device of claim 1, wherein the failure diagnosis expert module is used for performing failure analysis and diagnosis on the testing data, and comprises a diagnosis knowledge base, an inference engine, a dynamic database and a knowledge acquisition and processing module, and gives testing results and failure location.

3. The universal testing device according to claim 1 or 2, wherein the auxiliary function module comprises a photoelectric radar testing device for self-testing, generation and printing of a testing result report, archiving of testing results and query management.

4. The universal testing device of claim 3, wherein the product testing module integrates an analog signal, a digital signal, and a laser energy measuring component, and has functions of checking the operating status of the photoelectric radar, a laser signal, a video signal, a dc signal, a sensor component, and a digital conversion component.

5. The universal testing device of claim 4, wherein the laser energy measuring assembly comprises a power meter, an energy meter and a display device, and measures the pulse width, amplitude and number of the laser energy emitted by the laser distance measuring device.

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