CN109946536A - A kind of comprehensive reliability test system based on OPC technology - Google Patents
A kind of comprehensive reliability test system based on OPC technology Download PDFInfo
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Abstract
The present invention discloses a kind of comprehensive reliability test system based on OPC technology, comprising: Centralized Controller, atmosphere control system, vibration control system, electromagnetic control system and software testing system；Centralized Controller is OPC client, and opc server is connected with OPC client, and each control subsystem is connect by bus or Ethernet with opc server, and test data is uploaded to opc server.The present invention realizes to include temperature stress, humidity modification, vibration stress, electromagnetic stress, electric stress automatic load synchronous with the compbined test stress of software test stress on the basis of existing hardware equipment and software test platform.The present invention realizes the generalization and standardization of communications protocol simultaneously, so that the communication details of hardware are sightless for client, improve the confidentiality of hardware, at the same enable software development focus on function realization rather than the realization of hardware driving, improve software development efficiency.
Description
Technical field
The present invention relates to reliability test technologies, test system more particularly to a kind of Reliability Synthesis based on OPC technology
System.
Background technique
For traditional Military Electronic Equipment usually based on hardware, specific gravity shared by software is smaller, therefore its reliability theory,
The research of method, technology, device, tool etc., design and implementation are carried out mainly for hardware.With large scale integrated circuit and can
The digitized degree of the appearance and development of programming device, military hardware is continuously improved, and equipment gradually moves towards soft or hard hybrid system, fills
Software size in standby become more complicated with it is huge, this also directly results in defects count present in system and increases, mistake
The frequency of generation increases, and reliability reduces.Meanwhile the scale presentation of software becomes increasingly complex, increasingly huger trend.According to
Soft projectization requirement, software reliability generally manually evaluate and test by normality, and then time-consuming is difficult to estimate when meeting large scope software evaluation and test
It calculates, and after software solidification and when equipment carries out reliability test together, the detection and positioning to mistake are more difficult, cause to test
Period and testing cost sustainable growth.Specific deficiency is shown:
(1) the environmental element composition of reliability test is relatively simple, it is difficult to simulate true environment
The reliability determination of my army's equipment and examination are mainly according to GJB 899A-2009 " reliability determination and acceptance test "
It executes, the standard specifies the selections or design method of life profile, mission profile, environment section and test profile.GJB
Testing equipment is divided into eight class such as ground fixed equipment, earth moving equipment, ship's fitting, jet aircraft equipment by 899A, right
In each type, generally specify only humidity, temperature, vibration three classes environment (electric stress is considered as input herein, not as test
Environment).Can be seen that from the requirement implement reliability test environmental condition it is relatively simple, and actually equip the environment used
It differs greatly.Such as in the airborne equipment that high-altitude uses, need to simulate hypobaric in experimental enviroment, is exposed to outer dress
It is standby, or generally require to face complicated electromagnetic environment in the equipment of platform surface installation, such situation is in the standard
Necessary agreement is not made, it is difficult to meet the needs of modern weapons equipment Reliability identification and acceptance test.
(2) the stress composition in reliability test is not comprehensive enough, and proof strength is insufficient
Refer to that four class stress: electric stress, humidity modification, temperature stress and vibration stress, these stress exist in GJB 899A
It is applied to equipment under test during test, and more specific regulation is made that for the time of test and intensity etc..Such as preceding institute
It states, Technology for Modern Equipment uses digitizing technique to carry out software and hardware Mixed Design more and more, and system composition not only includes traditional
Hardware components also contain a large amount of software section, and specific gravity of the software in equipment is continuously increased, sometimes the cost of software section
The even more than cost of hardware components.Under this equipment mode, only by being tested with above-mentioned four kinds of stress conditions, it is difficult to suitable
It answers modern digital to disguise standby use environment feature, is not able to satisfy the needs of its reliability determination and acceptance test.Therefore, having must
Increase corresponding stress test condition, especially electromagnetic environment stress and software operation stress, more accurately to assess dress
Standby combined reliability.
(3) software reliability test method lacks corresponding technology, standard and specification
Firstly, being grasped to software and hardware hybrid system failure mechanism unclear.Commonly assume that hardware is independent from each other with software,
There is no consider both difference and the two interaction relationship, however, be between hardware and software it is interactional, one
Aspect, software can eliminate hardware fault by fault-toleranr technique to be influenced caused by system, on the other hand, unexpected hardware
Failure can also make the software operated on these hardware break down, and bring parameter to the reliability of system.Therefore, in order to evaluate
The reliability of software and hardware hybrid system, it is necessary to the failure machine of software and hardware hybrid system is seen clearly from the whole angle of software and hardware combining
Reason.Secondly, lacking mature software and hardware hybrid system reliability test technology, standards and specifications.Current test technology concentrates on
Software reliability and hardware reliability are individually evaluated respectively, then the side that the independent assessment result of hardware and software is comprehensive
Method, therefore there are biggish limitations.Third, for software and hardware hybrid system, input and output not only include software (number
According to) input, while also being inputted comprising signal, often the two has extremely close logical relation, this is also current reliability examination
The problem of not yet being addressed in testing.
Summary of the invention
In conclusion reliability test is most important for the reliability of equipment, traditional reliability test method, technology
It is increasingly difficult to adapt to the variation of equipment technology system with device etc., adapts to now and the need of future electronic equipment reliability test
It wants.Therefore, the comprehensive reliability test system based on OPC technology is able to solve reliability determination in current software and hardware hybrid system
The problem of with checking and accepting in experiment, being lack of pertinence test realization.It is an object of the invention in view of the above-mentioned problems, providing a kind of base
In the comprehensive reliability test system of OPC technology, specially a kind of realization system of software and hardware system Reliability Synthesis test,
It can be improved complicated, reliability test under combined stress ability and level.
A kind of comprehensive reliability test system based on OPC technology, comprising: Centralized Controller, atmosphere control system, vibration
Control system, electromagnetic control system and software testing system；
Wherein, Centralized Controller is OPC client, and opc server is connected with OPC client, and each control subsystem passes through
Bus or Ethernet are connect with opc server, and test data is uploaded to opc server, are turned test data by opc server
Turn to the object for meeting OPC data access specification, data object by opc server is sent to OPC client and in parsing
Real-time display and storage are carried out by client afterwards.Centralized Controller sends OPC instruction object to opc server, and by server
It is sent to each controlling test subsystem after parsing, the configuration of bottom testing equipment is completed by subsystem；
Wherein, atmosphere control system control hardware is the climatic test cabinet PLC of GE company, and control parameter is by Centralized Controller
Setting, is connected by the serial ports of computer with the opc server of Centralized Controller, and the parameter of setting is passed using RS485 agreement
It is sent to PLC, by the control of the parameters such as temperature, low pressure, the humidity of PLC completion pair；
Wherein, vibration control system includes vibration mechine, vibrating sensor, charge amplifier, A/D (modulus) conversion
(including programming amplifying and anti aliasing purposes filter and low pass reconstruct filter for device, control computer, D/A (digital-to-analogue) converter, low-pass filter
Wave and amplification), power amplifier.Vibrating sensor be arranged on vibration mechine table top or equipment under test, vibrating sensor with
Charge amplifier connection, charge amplifier, programming amplifying and anti aliasing purposes filtering, A/D (modulus) converter, control computer, D/
A (digital-to-analogue) converter, low pass reconstruction filtering and amplification, power amplifier and vibration mechine are sequentially connected；Vibration mechine platform
After the vibration acceleration signal at control point is detected by vibrating sensor on face (or on equipment under test), switch to electricity through charge amplifier
Signal is pressed, after filtering and enhanced processing, the number that quantization becomes computer capacity processing is carried out by A/D (modulus) converter
Signal is sent into control computer, and control computer compares to this signal with pre-set reference signal, ties according to comparing
Fruit determines the size of the driving signal of vibration mechine to be sent to, this driving signal becomes by D/A (digital analog converter)
Change analog signal into, then by low-pass filter and power amplifier processing after, carried out by power amplification driving vibration mechine
Vibration forms the repetitive control process of a closed loop in this way, until the acceleration until control point meets the requirement of setting；
Wherein, electromagnetic control system is divided into transformer injection and current probe injection two because of the difference of interference signal frequency range
Kind mode, wherein transformer injection mode includes injection transformer, signal source, oscillograph, power amplifier, LISN (linear resistance
Anti- stabilizing network), signal source, power amplifier and injection transformer are sequentially connected, and LISN is connected to power input, oscillograph
Power input after being connected to injection interference signal；Current probe injection mode includes signal source, power amplifier, electric current note
Enter probe, current measurement probe, receiver or frequency spectrograph, signal source, power amplifier and injection probe are sequentially connected, connect
Receipts machine connects current measurement probe, and current measurement probe is mounted on the power input after injection interference.Electromagnetic control system is negative
The application of Conducted Electromagnetic Interference is blamed, and measures interference of the equipment under test to being coupled on its input power cord, interconnection line and casing
The ability to bear of signal.Electromagnetic experiment is divided into transformer injection and current probe injection two according to the difference of interference signal frequency range
Kind mode.The continuous wave CO_2 laser that transformer injection method is suitable for 50kHz or less frequency range power supply line injects.When test, first truncation is leaned on
A piece tested power supply line at equipment under test end, the secondary of injection transformer is sealed in, signal source connects the primary in injection transformer.
What is monitored by needs is interference voltage, therefore is directly measured using oscillograph.Apply interference voltage until mark by Frequency point when test
Limit value as defined in standard, and observe the working condition of measured piece.Current probe injection method is used for 10kHz~400MHz frequency range cable
The continuous wave CO_2 laser of beam injects.When test, probe card is directly injected a current on a branch of tested cable by equipment under test end,
Signal source is connected with injection probe.What is monitored by needs is interference electric current, therefore uses receiver or frequency spectrograph that electric current is added to survey
The method of amount probe is monitored.
Wherein, software testing system includes signal data adaptation loading device and test industrial personal computer.Signal data adaptation adds
It carries to set and be connected with equipment under test, for a variety of different input signals are converted to the signal that test industrial personal computer can identify,
And it is attached by Ethernet and test industrial personal computer.Test industrial personal computer can generate reliability test use-case and data, then
Loading device is adapted to by the signal data that Ethernet connects, various types of test signal is sent to equipment under test, in turn
The program run on equipment under test is tested；
Further, equipment under test is fastened on the vibration test stage body of vibration control system, and by vibration mechine
It is connected to climatic test cabinet bottom by flexibly connection type, guarantees equipment under test while being applied vibration in test
It is required that temperature and humidity environment among, software test interface, equipment under test power interface, injection probe and current measurement probe
Equipment under test is accessed Deng the test lead hole by climatic test cabinet, guarantees that all types of test profiles can be synchronously applied to
Equipment under test.
Design and operation is completely tried in the FTP client FTP of Centralized Controller by the parsing to integrated view
Data are tested, and test data is loaded by central controlled mode, realize software and hardware system reliability test process
Automatic operating.
A kind of comprehensive reliability test system based on OPC technology of the present invention, has the following beneficial effects:
Since existing reliability test uses serial manner for the application of different stress, it is unable to real simulation test and sets
Standby working environment, and then be difficult to effectively find all fault modes, especially just occur under integrated environment conditioning
Hardware class fault mode and subsequent fault mode are coupled with software.Therefore, the present invention is surveyed in existing hardware equipment and software
On the basis for trying platform, realize to include temperature stress, humidity modification, vibration stress, electromagnetic stress, electric stress and software test
The compbined test stress of stress synchronizes automatic load, can simulate the true building ring of software and hardware hybrid system as far as possible
Border.Synchronously apply all kinds of stress, more scientific reasonable evaluation can be made to the reliability of software and hardware hybrid system.
The loading technique of existing item environment stress has been mature on the whole, and existing commercial product occurs, but integration description
The general communications protocol of real-time synchronization control planning is also a blank also without relevant criterion between distinct device.The present invention is adjusting
It looks on the capability foundation discussion that relationship and testing equipment provide between varying environment stress loading, proposes the data standardized using OPC
Communication modes.The generalization and standardization for realizing communications protocol, so that the communication details of hardware are can not for client
See, improve the confidentiality of hardware, at the same enable software development focus on function realization rather than the realization of hardware driving,
To improve software development efficiency.
Detailed description of the invention
Fig. 1 is a kind of functional block diagram of comprehensive reliability test system based on OPC technology.
Fig. 2 is a kind of weather system schematic diagram of comprehensive reliability test system based on OPC technology.
Fig. 3 is a kind of vibrational system schematic diagram of comprehensive reliability test system based on OPC technology.
Fig. 4,5 be a kind of comprehensive reliability test system based on OPC technology electromagnetic interference systematic schematic diagram.
Fig. 6 is the sub- sectional view of compbined test of canonical system.
Fig. 7 is a kind of operational flow diagram of comprehensive reliability test system based on OPC technology.
Specific embodiment
Understand for the ease of those of ordinary skill in the art and implement the present invention, below in conjunction with attached drawing and example to this hair
It is bright to be described in further detail.
As shown in Figure 1, entire comprehensive test system is made of four subsystems, they are atmosphere control system, vibration respectively
Autocontrol system, electromagnetic control system and software testing system.Since electromagnetic radiation test needs to carry out in special darkroom,
And radiation will cause imponderable influence for other test subsystems, so electromagnetic control system only carries out electromagnetic conductive examination
The control tested.
Before on-test, equipment under test is fastened on vibration stage body, and pass through the side of flexible connection for stage body is vibrated
Formula is connected to climate box bottom, guarantee temperature and humidity environment of equipment under test while being applied vibration in test requirements document it
In, software test interface and electromagnetism injection connector guarantee institute by the test lead hole access equipment under test of climatic test cabinet
Equipment under test can be synchronously applied to by having the test profile of type.
OPC client monitors atmosphere control system, vibration control system, electromagnetic control system in real time as master controller
With the operating condition of software testing system.
Test data is uploaded to opc server by bus or Ethernet by each control subsystem, will be tried by opc server
It tests data and is converted into the object for meeting OPC data access specification, data object is sent to OPC client simultaneously by opc server
Real-time display and storage are carried out by client after parsing.Centralized Controller sends OPC instruction object to opc server, and
By being sent to each controlling test subsystem after server parsing, the configuration of bottom testing equipment is completed by subsystem.
As shown in Fig. 2, the control hardware of atmosphere control system is the PLC of GE company, using PID plus fuzzy control method,
It being made of systems such as heating, refrigeration, evacuation, humidifications, the parameter of control is arranged by Centralized Controller, by the serial ports of computer,
The parameter of setting is transmitted to PLC using RS485 agreement, by the control of the parameters such as temperature, low pressure, the humidity of PLC completion pair.
The requirement of real-time of vibration control system is higher, such as controls the random vibration that frequency band is 2000 hertz, and spectral line number is
400, then sample frequency is at least 5120 hertz, and the time of one hardwood of acquisition is about 200 milliseconds.Control system is in this time interval
It in addition to carrying out real-time control, also needs to do 1024 points of Fast Fourier Transform (FFT), so generally using dedicated fast digital signal
Processor carries out operation.As shown in figure 3, on vibration mechine table top (or on equipment under test) control point vibration acceleration signal
After being detected by vibrating sensor, switch to voltage signal through charge amplifier, after filtering and enhanced processing, by A/D (mould
Number) converter carry out quantization become computer capacity processing digital signal be sent into control computer, control computer to this letter
It number compares with pre-set reference signal, according to comparison result, determines the driving signal of vibration mechine to be sent to
Size, this driving signal is transformed into analog signal by D/A (digital analog converter), then is handled by low-pass filter and amplifier
Afterwards, it is vibrated by power amplification driving vibration mechine, the repetitive control process of a closed loop is formed in this way, until control
Until the acceleration of point meets the requirement of setting, here it is the principles of entire vibrational system work.
Electromagnetic control system is responsible for the application of Conducted Electromagnetic Interference, and measures equipment under test to being coupled to its input power
The ability to bear of interference signal on line, interconnection line and casing.The interference signal type of application mainly has continuous wave CO_2 laser and arteries and veins
Rush class interference.Apply and the equipment of measurement is signal source, oscillograph, the power amplifier etc. of agilent company, such equipment is equal
Meet the I/O interface software standard of VXI alliance formulation.Electromagnetic experiment is divided into transformer note according to the difference of interference signal frequency range
Enter and injects two ways with current probe.The continuous wave CO_2 laser that transformer injection method is suitable for 50kHz or less frequency range power supply line is infused
Enter, as shown in Figure 4.When test, first a tested power supply line at equipment under test end is leaned in truncation, and the secondary of injection transformer is gone here and there
Enter, signal source connects the primary in injection transformer.What is monitored by needs is interference voltage, therefore is directly measured using oscillograph.It surveys
Apply interference voltage limit value as defined in the standard by Frequency point when examination, and observes the working condition of measured piece.Current probe note
The continuous wave CO_2 laser for entering method for 10kHz~400MHz frequency range core of a cable injects, as shown in Figure 5.It, directly will be electric when test
On a branch of tested cable by equipment under test end, signal source is connected stream injection probe card with injection probe.Because needing to supervise
What is surveyed is interference electric current, therefore uses receiver or frequency spectrograph that the method for current measurement probe is added to be monitored.In test, in signal
Output amplitude is adjusted respectively on each output frequency in source, makes up to limiting level as defined in standard, keeps output constant,
The phenomenon that whether observation measured piece has not normal work, performance decline or breaks down.
Software testing system carries out integration need analysis first, then constructs Operation Profile, generates reliability test use-case
And data, it is ready for the environment of test, carries out test run, collects and surveys the data sent and received, carries out reliability
Data analysis.The defect for influencing software reliability in program can be effectively found using this method for testing software, pass through row
Increase except these defects can effectively realize software reliability.
It is illustrated in figure 6 the sub- sectional view of canonical system compbined test, entire integrated view is by system task section, temperature
Spend stress profile, humidity modification section, vibration stress section, electric stress section, electromagnetic interference section and software test section group
At.During test, whole system is mainly used to realize the application of each stress, establishes test model by OPC technology, and lead to
Cross the transmission that automation interface realizes data.
It is illustrated in figure 7 comprehensive test system client operational flow diagram.Firstly the need of login after system starting, according to stepping on
The difference at family is employed, there can be different software license limits.User starts main interface after logging in, in the menu bar of main interface
Choose test profile import feature, test profile import dialog box in, user can according to the source of test profile select from
XML file is imported or is imported from database.User with super-ordinate right can to the test profile saved in database into
Row additions and deletions and modification.After importing test profile, the configuration of Yao Jinhang testing equipment, configuration information include the title of equipment, manufacturer,
Responsible person, contact method etc. further include IP address, port numbers of testing equipment etc..After test information needed is filled in completely,
It can star test.It can be first attached with each testing equipment when test starting, start the program-controlled of test if successful connection
With the reading of data.During test carries out, test data and parameter are displayed in real time, and record test day simultaneously
Will (variation, abnormal data including test parameters etc.).After the test, test data and test log are maintained in database
In the middle, test backtracking can be carried out at any time.According to test data and relevant information, software and hardware centralized control system can give birth to automatically
At the test report for meeting call format.So far, system function operation finishes.
In conclusion the invention proposes the comprehensive reliability test systems based on OPC technology.The system realizes a variety of
The application of environmental element solves and lacks complicated synthesis in current software and hardware mixing change system reliability determination and acceptance test
The problem of environment and condition.The system is reliable for the synthesis of software and hardware hybrid system based on existing National Military Standard
Property test demand, devise one kind be provided simultaneously with temperature, humidity and vibration natural environment and required electromagnetic environment test system
System.Meanwhile the system can be signal and data needed for tested equipment injection testing, mention for subsequent fail-safe analysis and assessment
More accurate data and premise are supplied.
The present invention is standardized by OPC and converts conventional transport protocols in order to meet the transmission form of OPC specification, is increased and is
The compatibility of system provides more convenient mode for the new testing equipment of subsequent introducing or addition monitor client, realizes
The generalization and standardization of communications protocol.
Claims (2)
1. a kind of comprehensive reliability test system based on OPC technology, it is characterised in that: the system includes: Centralized Controller, gas
Wait control system, vibration control system, electromagnetic control system and software testing system；
Wherein, Centralized Controller is OPC client, and opc server is connected with OPC client, and each control subsystem passes through bus
Or Ethernet is connect with opc server；
Wherein, atmosphere control system control hardware is the climatic test cabinet PLC of GE company, is taken by the serial ports and OPC of computer
Business device is connected；
Wherein, vibration control system includes vibration mechine, vibrating sensor, charge amplifier, A/D converter, control calculating
Machine, D/A converter, low-pass filter, power amplifier, the low-pass filter include programming amplifying and anti aliasing purposes filtering,
Low pass reconstruction filtering and amplification；Vibrating sensor is arranged on vibration mechine table top or equipment under test, vibrating sensor and electricity
Lotus amplifier connection, charge amplifier, programming amplifying and anti aliasing purposes filtering, A/D converter, control computer, D/A converter,
Low pass reconstruction filtering is sequentially connected with amplification, power amplifier and vibration mechine；
Wherein, electromagnetic control system is divided into transformer injection and current probe injects two ways, wherein transformer injection mode
Including injection transformer, signal source, oscillograph, power amplifier, LISN, that is, linear impedance stabilization network, the signal source,
Power amplifier and injection transformer are sequentially connected, and LISN is connected to power input, and oscillograph is connected to injection interference signal
Power input afterwards；Current probe injection mode includes signal source, power amplifier, injection probe, current measurement spy
Head, receiver or frequency spectrograph, signal source, power amplifier and injection probe are sequentially connected, and receiver connects current measurement
Probe, current measurement probe are mounted on the power input after injection interference；
Wherein, software testing system includes signal data adaptation loading device and test industrial personal computer；Signal data adaptation load dress
It sets and is connected with equipment under test, and be attached by Ethernet and test industrial personal computer.
2. a kind of comprehensive reliability test system based on OPC technology according to claim 1, it is characterised in that: into one
Step, equipment under test is fastened on the vibration test stage body of vibration control system, and by vibration mechine by flexibly connecting
The mode of connecing is connected to climatic test cabinet bottom, and software test interface, equipment under test power interface, injection probe and electric current are surveyed
Amount probe accesses equipment under test by the test lead hole of climatic test cabinet.
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| CN116166071A (en) * | 2023-03-02 | 2023-05-26 | 山东大学 | Constant temperature method and system suitable for radio telescope receiver |
| CN116795724A (en) * | 2023-08-23 | 2023-09-22 | 赛维航电科技有限公司 | Method, system, equipment and medium for testing unmanned aerial vehicle loading equipment software interface |
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Application publication date: 20190628 |