CN108629866A - Method is repaiied in the examination of certain type Flight Data Record System for Aircraft - Google Patents
Method is repaiied in the examination of certain type Flight Data Record System for Aircraft Download PDFInfo
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- CN108629866A CN108629866A CN201810428628.XA CN201810428628A CN108629866A CN 108629866 A CN108629866 A CN 108629866A CN 201810428628 A CN201810428628 A CN 201810428628A CN 108629866 A CN108629866 A CN 108629866A
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Abstract
The invention discloses a kind of examinations of certain type Flight Data Record System for Aircraft to repair method, including the realization of preceding product test method is repaiied in examination and the main problem (solution of problem when decomposing and being surface-treated solved in the process is repaiied in examination；On aircraft electric switch can not open failure exclusion and equipment detection performance it is perfect；The improvement of the overproof exclusion of sensor transducer module data and the protection of detection device connector contact performance；The solution of the unqualified Frequent Troubles of delivery temperature measurement module output voltage and partial circuit mapping)；Method is repaiied in the examination of certain type Flight Data Record System for Aircraft provided by the invention, increases working efficiency, meanwhile, avoid the risk of the Operating Complexity and Related product failure again because carrying out system performance verification using aircraft as platform.In addition, reviewing one's lessons by oneself process by difficult, many new knowledge have been understood and grasped.Repairing for such imported product from now on is laid a solid foundation.
Description
Technical field
The present invention relates to a kind of examinations of certain type Flight Data Record System for Aircraft to repair method.
Background technology
Certain type Flight Data Record System for Aircraft (referred to as " flying ginseng ") is an important air environment on aircraft, its work
With being combined more and more closer with the flight safety of aircraft and aircraft maintenance and flight training.Flight Data Record System for Aircraft and ground
Face data treating stations expert system is combined, can to associated system on aircraft, as engine, atmosphere data, course posture,
The working condition of the systems such as flight control, fuel oil is monitored, and can also be monitored to flight quality, it is a set of right to be consequently formed
The supervisory system of closed of flight safety.The handling result of flying quality can be used as maintenance, flight training, safety inspection etc.
The important evidence of segment analysis problem, once aircraft accident occurs, being recorded in flying quality in anti-crash logger can be with
Key message is provided for crash analysis.These information can also be to formulate loading spectrum, work out strength specification and the design of new machine, old machine
Remodeling etc. provides scientific basis.
Certain type Flight Data Record System for Aircraft is mainly by controlling and exchanging component, magnetic recording instrument component, Power Supply Assembly, sensor
Rod changer assembly, self-test storage amplifier block, service parameter component, A coordination components, B coordination components, exchange 36V measure mould
Block (2), delivery temperature measurement module (2), geometric height measurement module, is handed over Engine Oil Temperature measurement module (2)
Flow 200V measurement modules, measurement module (survey by rotor rotation speed measuring module, Left Hand Engine rotation speed measuring module, right engine speed
Amount module, master subtract lube temperature measure module, Left Hand Engine fule shut-off valve measurement module, right engine fule shut-off valve measurement module
Each one), it is big fly ginseng measurement module plate (22 measurement modules compositions), small winged ginseng measurement module plate (4 measurement modules form),
Module XX1, module XX2 compositions.Totally 19 kinds of products, 58 department enclosure compositions, system are huge, it may be said that are that current institute's organic type flies
In ginseng system most complicated a set of (structure chart is shown in Fig. 1).Because of the information that it needs to collect multiple systems on aircraft, it is crosslinked signal
Very much, relationship is intricate, and failure is difficult positioning, and it is difficult to repair.
Product in the system is import parts, is installed on domestic aircraft, because of no equipment, paucity, only
Translation information sentence it is obstructed, it is front and back not correspond to, be difficult to understand for；Internal component mostly without model or model foreign language, and with
The differences in appearance of domestics is larger, it is difficult to differentiate its function and performance parameter.Therefore repairing can not implement, and affect the life of factory
Benefit and manufacturing schedule are produced, is the problem that our factory faces.
If carrying out the performance verification of system using aircraft as platform, because Flight Data Record System for Aircraft interconnected system is more, need
Full machine related system is wanted to be installed in place and after qualification, can just implement.In addition, after being powered aboard because of Flight Data Record System for Aircraft
Aircraft Flight Test will be carried out, therefore once at this moment there is failure, the time for leaving troubleshooting for is extremely short, in addition, it is desirable to the system relationship
The personnel of multiple professions assist debugging, in order to investigate failure, also to carry out repeated disassembled and assembled, debugging, it is complicated for operation, be not easy
Implement and be easy to cause the failure again of other products.Therefore by using aircraft as platform carry out system performance verification risk compared with
Greatly.
Invention content
The present invention is to solve above-mentioned technical problem and the technical solution adopted is that provide a kind of certain type flight parameter record system
Method is repaiied in the examination of system, wherein specific technical solution is：
For certain type Flight Data Record System for Aircraft because of the product that it is full import, data is limited, and repairing difficulty is larger, in related skill
In the case of art paucity and existing translation information inaccuracy, the examination for completing the system repaiies that (preparation is repaiied in examination and examination was repaiied
Journey flow diagram is shown in Fig. 2, Fig. 3), the main problem that middle solution is repaiied in examination is as follows：
The realization of product test method before 1. the examination of certain type Flight Data Record System for Aircraft is repaiied
(1) the buying of test equipment：Test equipment has been purchased by market survey and technology analysis.
(2) the grasp of basic principle：It is obstructed by consulting sentence in the case of correlation technique data and poor schematic diagram
Foreign languages translation data and related books on translation, understood the basic principle of system.
(3) pin definition is explored：Whole system totally 58 attachmentes, hundreds of pins, by being carried out one by one to test equipment
Test, verification have summed up the pin definition of each attachment.
(4), by decomposition, repairing, the test of debugging and product etc. to equipment, 58 department enclosures are completed in the system
Single-piece detection function.
(5) the solution that system combined test can not be implemented
1. system lamp all idle discoveries when joint test：To meet the integrated testability requirement on aircraft, the set system
Major product in system need to carry out the joint test of system, and this debugging efforts equipment Fang Wei is specifically verified, and is only led
Test cable is led to, has found that system lamp does not work all in practical joint test.
2. the solution that circuit is not transferred all the way：By carrying out careful comparison, row to foreign language translation information and device file
Look into and aircraft on circuit combing after, find not transfer there are two the circuit of product wherein, by make transit cable carry out it is whole
Change, and cable louding structure diagram between perfect system (see Fig. 4).
3. investigating line alignment from principle analysis：Pass through understanding, the analysis to eliminating interrecord structure figure, thus it is speculated that go out circuit and walk
To fault point, system combined test is made to be achieved.
2. the main problem solved in the process is repaiied in the examination of certain type Flight Data Record System for Aircraft
(1) the solution of problem when decomposing and be surface-treated
1. by making screw, the difficult problem of overhaul time-division solution is effectively reduced
2. making surface spraying word be achieved by making hollow-out word aluminium sheet
The repairing time is set to greatly shorten 3. the label by improving product surface paints write method
(2) the failure of " electric switch can not be opened on aircraft " is solved by the replacement for the diode that domesticizes, and by equipment
Detection performance it is perfect, compensate for the defect of army and our factory existing equipment.
(3) the improvement of the overproof exclusion of sensor transducer module data and the protection of detection device connector contact performance
(4) the solution of the unqualified Frequent Troubles of delivery temperature measurement module output voltage and the mapping of partial circuit.
The present invention has the advantages that compared with the existing technology：
Certain type Flight Data Record System for Aircraft is crosslinked with multiple systems on aircraft.The system shares 58 department enclosure groups
At, be crosslinked mutually between each attachment, internal component mostly without model or model foreign language, and with the poor appearance of domestics
It is not larger, it is difficult to differentiate its function and performance parameter.In the case of correlation technique data and poor relative theory figure, by right
The mapping of test equipment and department enclosure, is compared the serious analysis of product function, and basic structure, the Ge Geyin of each product have been understood
The definition of foot has grasped the method and system joint test function of decomposition, the repairing, assembly, verification of each product, has solved product
Preparation (examination repaiies preparation flow diagram and sees Fig. 2) is repaiied in examination and the multinomial problem in process (examination repaiies process flow block diagram and sees Fig. 3) is repaiied in examination,
And according to practical operation and technological document, the stronger technological procedure of operability is write, success is finally reviewed one's lessons by oneself.This is not only work
Factory increases working efficiency, meanwhile, avoid the Operating Complexity and correlation because carrying out system performance verification using aircraft as platform
The risk of product failure again.In addition, reviewing one's lessons by oneself process by difficult, many new knowledge have been understood and grasped.From now on should
The repairing of class imported product is laid a solid foundation.
Description of the drawings
Fig. 1 is the structure chart of Flight Data Record System for Aircraft.
Fig. 2 is that preparation flow diagram is repaiied in examination.
Fig. 3 is that process flow block diagram is repaiied in examination.
Fig. 4 is the cable louding structure diagram of joint test product.
Fig. 5 is to eliminate interrecord structure figure.
Fig. 6 is screw schema mapping.
Fig. 7 is that word marking surveys and draws schematic diagram.
Fig. 8 is the partial circuit diagram of base circuit board.
Specific implementation mode
The examination that this method is applicable in Mr. Yu's type Flight Data Record System for Aircraft is repaiied.
Tackling key problem process is repaiied according to examination to be introduced successively：
The realization of product test method before 1. examination is repaiied
(1) the buying of test equipment and solution of problems are summarized
It is analyzed by market survey and technology, our factory has purchased the test equipment of the set Flight Data Record System for Aircraft, still,
Due to the technology blockage of equipment manufacturer, the pin definition of product is not provided, the failure of product can not further be implemented.
By the principle analysis to product and the anti-test to the hundreds of pins of equipment, each product and each Plug Division of equipment have been obtained
The pin definition of position, the troubleshooting for product and equipment provide technical support.In addition, the data of coordinative composition of equipments is for product
Though test method be described, by practical operation there are many mistakes, multiple product can not be tested, be passed through
Analysis and summary optimize product test specification, through repeatedly debugging, complete single products functional test and main production in system
The joint test function of product, meets the test request of technical performance.Specific implementation method is as follows：
(2) the grasp of basic principle
In the case of correlation technique data and poor schematic diagram, all data for having reference value are often consulted, because
Data is foreign languages translation, read get up it is very laborious, hard to understand, then, foreign languages translation books are just quested about for, by relevant money
Material is read repeatedly, has basic insight to the principle of the system main accessories in this way.
(3) pin definition is explored
It is aware of basic principle, still, the pin definition of each attachment and internal structure is but known nothing, allow equipment
Manufacturer's offer is highly difficult, in socializing several times, only gives the pin definition of only a few, and some pins are by verification
It is incorrect afterwards.Then, it determines test hundreds of pins of this 58 attachmentes one by one by test equipment, verify, by
Especially more in pin, test process needs the greatly patient and careful heart, through great efforts, has finally understood the output definition of equipment
And each pin definition of attachment, and summarize, conclude.
(4) the realization of system single-piece detection function
Product is more in the system, and structure, the principle of each product are different from other types, and the structure composition of the system is more
Huge, performance parameter is more.Product is full import device in system, replaces diode, fuse, light bulb, dustproof cover, colour
The common devices such as hood are both needed to production domesticization and substitute or make by oneself.After carrying out conscientious analysis, comparison to product function, courageously
It decomposes, repair each attachment in ground.The basic structure of each product and the effective ways of decomposition, assembly, verification, repairing have been grasped,
And in the repair procedures of product to part carry out dimensional measurement, material it is determining and by measurement result and surface treatment, assembly,
The each main points that should be noted in repairing are recorded.According to practical operation and technological document, the stronger work of operability has been write
Skill regulation.Complete 19 kinds of products in the system, the single-piece detection function of 58 department enclosures.
(5) the solution that system combined test can not be implemented
1. system lamp all idle discoveries when joint test：
The set system product is more, and in order to meet the integrated testability requirement on aircraft, major product in system will also be into
The joint test of row system.The performance verification work of this system joint test carries out in factory, still, system combined
Bottleneck is encountered when test, according to what data illustrated operate, and system lamp, which does not work all, (to be noted：Have on service parameter component
Four indicator lights, display illustrate whole system, control and exchange component, magnetic recording instrument component and sensor transducer group respectively
Whether part runs well).Through understanding, this debugging efforts equipment manufacturer is not verified specifically, and test is only turned on
Cable.
2. the solution that circuit is not transferred all the way：
After tested, the function of each indicator light is normal, and it is careful to be carried out again to foreign language translation information and device file
Compare, investigation, do not pinpoint the problems, after on to aircraft after the combing of circuit, it was found that doubtful point finds that wherein self-test is stored
There is a circuit not transfer between amplifier block and service parameter component, by the research to cable louding on aircraft, finds to lack
Transit cable between few product carries out contrast verification by making cable, conducting, and with the cable on aircraft, and after rectification is
The cable louding structure diagram of product is shown in Fig. 4 between system.
3. line alignment is investigated in principle analysis：
Still without any instruction after switching, again to being analysed in depth in its principle, by browsing foreign languages translation
File simultaneously obtains after carrying out digestion analysis：Reference voltage amplifies after being compared with elimination voltage, then is adjusted by adjustment element
Signal is eliminated in output after whole.When self-test storage amplifier block, which will eliminate signal, is added to service parameter component, service parameter group
Part voltage is eliminated, all record power-off, meanwhile, service parameter component is without instruction.It eliminates interrecord structure figure and sees Fig. 5.Remember to eliminating
Record process is reversely analyzed, i.e., when service parameter component has instruction, self-test is stored amplifier block and provided without signal is eliminated.
Verification is repeatedly connected in the connecting cable that self-test is stored between amplifier block and service parameter component excessively, and there is no ask
Topic, to speculate, communication between the two is without external issues.So, it may be possible to reference voltage provide it is not right, reference voltage be by
What power supply component provided, through investigation, when designing cable louding, lack the line that a power supply component leads to service parameter component
Road, after corrigendum, whole system works well.
2. the main problem solved in the process is repaiied in examination
(1) the solution of problem when decomposing and be surface-treated
1. by making screw, the difficult problem of overhaul time-division solution is effectively reduced
Many places screw corrosion is serious when analytical product, decompose i.e. be broken or divide at all it is inextricable, at screw spray D40 remove
Rust agent, and decomposed again after being spaced 5min, it decomposes more easily, but do not solve root problem, in order to preferably solve
Certainly the problem of screw easy-to-rust, easy-to-rust screw mapping is subjected to, has made (schema mapping is shown in Fig. 6), in this way, product is overhauled
When, this kind of screw is all renewed, so that it may the effective problem for reducing overhaul and decomposing difficulty.
2. making surface spraying word be achieved by making hollow-out word aluminium sheet
There is a product that need to spray crocus in the set Flight Data Record System for Aircraft, and dry in the shell for having sprayed crocus
After dry, then the spraying of surface black word marking is carried out, still, the spraying of word marking needs word marking font format
Hollow-out word aluminium sheet could spray required word marking.Then, by the size of original product word marking, pattern, width
And (schema mapping is shown in Fig. 7) is surveyed and drawn in position, and hollow-out word aluminium sheet has been made, after making hollow-out word aluminium sheet, then use high pressure
Paint spraying outfit spraying is pitch-dark so that the surface lacquer of the product requires to be achieved.
The repairing time is set to greatly shorten 3. the label by improving product surface paints write method
After each product surface spray painting, it is both needed to each mark of Freehandhand-drawing and piece number, the Freehandhand-drawing need of work of so multi-product is very big
Patience and the time.Start to be described with writing brush, feel time-consuming and laborious, the rear pen good using blotting effect dips in the side of paint with point
Method is write to paint, and the repairing time is greatly saved.
On aircraft electric switch can not open failure exclusion and equipment detection performance it is perfect
Performance requirement can be met by carrying out automatic test to each product, and still, on aircraft feeding back the system, there are failures.
Due to that can be gone here and there with troubleshooting without spare part at that time, therefore a whole set of products is sent to army, is tested using the original equipment of army,
Normally.The result tested in test equipment and machine has differences, and the rear army that borrows goes here and there part on carry out machine successively with the product of model
Afterwards, it is found that after that will control and exchange component string uses, failure vanishes on machine.Illustrate that controlling and exchange component is implicitly present in failure, and
And the detection device of army and our factory can not detect that it whether there is the failure.By consulting the drawing on aircraft, to production
Product internal wiring is excluded, after being detected to suspicious device, find a black particles type diode damage, due to this two
Pole pipe is import device, and the Buying Cycle is very long, and individually buys the device, and producer not provides, and can only carry out the device
The products substitution of production domesticization, multichannel analyzer part function, using and browse production domesticization device substitute pertinent texts after, decision should
Diode is replaced with the domestic diode of 2CZ85D types, and after replacing and installing, aircrafi calibration performance is qualified, by long-term use not
It was found that failure occurs again.Since the equipment that army's equipment and our factory are ordered can not detect this failure, illustrate disembarking
Existing defects when detection, for the undetectable problem of this performance, by cooperating with making apparatus side, perfect this property
The detection function of energy.
(3) the improvement of the overproof exclusion of sensor transducer module data and the protection of detection device connector contact performance
When carrying out product test to sensor transformation device assembly, it is found that some signals have output, some signals are without output.
The product one shares 116 indexs, each index is independent, not with other interconnection of signals, there is about 40% number after test
According to incorrect.After detecting one time again, the result of detection is different from first time, have passed through the comparison of detection data three times, finds
There are failures when some data last times are detected, next time just normal.Same test method is carried out with the product of same model,
Fault condition is similar, in this way, can exclude product failure substantially.Therefore consider that product contacts sex chromosome mosaicism, in the connector to equipment
It is tested again after being polished, it is found that fault point has been lacked very much, illustrate effective, then docked plug part and carry out deep polishing
It repairs, rear properties of product are intact after tested.
The reason of causing the phenomenon of the failure is that the connector oxidation resistance is poor, and how to protect is a problem.Gold has very
Strong anti-oxidation characteristics, and resistance is very low, and use for a long time can keep its signal communication good, first it is contemplated that this is connect
Plug-in unit carries out Gold plated Layer protective treatment.But dismantled so huge connector and subsidiary cable, electroplating processes,
Task amount is very big, and remakes an indifference, moreover, be easy to causeing the damage of conduction property and zero spare part；By connector
It is cleaned with absolute ethyl alcohol, protective jacket is used in combination to be sealed against, when in use again removed protective jacket.It is connect in this way, can improve
In product verification afterwards the failure caused by connector contact performance is bad did not occurred for the antioxygenic property of plug-in unit.
(4) the solution of the unqualified Frequent Troubles of delivery temperature measurement module output voltage and partial circuit mapping
The module is used to zoom into (0~100) mV DC voltages that self-rectified apparatus sends over the direct current of (0~6) V
Voltage is conveyed to winged ginseng.The underproof failure rate of output of products voltage is higher, because internal components are import, component
Appearance and domestic gap are larger, it is difficult to differentiate, to solve this failure, be found by the methods of mapping circuit, comparative analysis
The method of adjustment output voltage.The product has two pieces of circuit boards, can will be defeated by adjusting the potentiometer in base circuit board
Go out voltage to be adjusted.The partial circuit diagram of base circuit board is shown in Fig. 8.By the mapping to circuit board, had accumulated for the product
Technical support is conducive to the understanding of the type principle of products and the exclusion to the other failures of type product.
It summarizes：
1, after the basic principle for grasping system, by test, the verification to equipment and product, whole system has been summed up
Pin defines, and the exclusion to carry out repairing and product failure provides technical support.
2,19 kinds of products in the system, the single-piece detection function of 58 department enclosures, to meet on aircraft are not only completed
Integrated testability requirement, by translation information and device file carry out careful comparison, on investigation and aircraft circuit combing, make
System combined test function is achieved.
3, by being surveyed and drawn, being made to easy-to-rust screw, such screw is all renewed when repairing, is effectively reduced big
It repaiies product and decomposes difficult problem.
4, it by making hollow-out word aluminium sheet, and is sprayed using high-pressure spray-painted tool so that the surface words identification of certain product
It is required that being achieved.
5, the pen for using blotting effect good is changed to by the original label for describing product surface with writing brush, the side of paint is dipped in point
Method is write to paint, and the repairing time is greatly saved.
6, the equipment that army's equipment and our factory are ordered can not detect that the when of being debugged on machine feeds back " electric switch can not on aircraft
The failure of opening ".By solving this failure to the production domesticization of certain product diode replacement, and perfect our factory equipment is to this
The detection function of item performance compensates for the defect of army and our factory existing equipment in turn.
7, for the problem of equipment connector contact performance difference, by cleaning to equipment connector and sealing protection, no
Only improve the contact performance of equipment connector, meanwhile, eliminate certain product data caused by contact performance difference it is overproof therefore
Barrier.
8, the method for having found adjustment output voltage by the methods of mapping circuit, comparative analysis, it is defeated to solve certain product
The problem of going out voltage unqualified Frequent Troubles.By the mapping to circuit board, technical support is had accumulated for the product, is conducive to this
The understanding of type principle of products and exclusion to the other failures of the product.
Claims (5)
1. method is repaiied in a kind of examination of certain type Flight Data Record System for Aircraft, it is characterised in that：
1) realization of product test method before examination is repaiied
(1) the analysis of equipment
It is analyzed by market survey and technology, has purchased test equipment, still, due to the technology blockage of equipment manufacturer, no
The pin definition for providing product, can not further implement the failure of product；In addition, the data of coordinative composition of equipments is for product
Though test method is described, by practical operation, there are many mistakes, and multiple product can not be tested, by total
Knot analysis, optimizes product test specification；Follow-up work is：Digestion data, be powered test, single products function in completion system
The joint test function of test and major product, meets the test request of technical performance；
(2) the grasp of basic principle
In the case of correlation technique data and poor schematic diagram, limited foreign languages translation data is often consulted, to system master
The principle of attachment is wanted to have basic insight；
(3) pin definition is explored
Hundreds of pins of 58 attachmentes of test equipment are tested one by one by test equipment, are verified, equipment has been understood
Output definition and attachment each pin definition；
(4) the realization of system single-piece detection function
It is determining and by measurement result and surface treatment, dress that dimensional measurement, material are carried out to part in the repair procedures of product
Match, repair in each main points that should be noted record, complete 19 kinds of products in the system, the single-piece detection of 58 department enclosures
Function；
(5) the solution that system combined test can not be implemented
1. system lamp all idle discoveries when joint test：
The set system product is more, and in order to meet the integrated testability requirement on aircraft, the major product in system will be also
The joint test of system finds system lamp idle failure when test；
2. the solution that circuit is not transferred all the way：
After tested, the function of each indicator light is normal, again to foreign language translation information and device file carry out careful comparison,
Investigation, does not pinpoint the problems, after on to aircraft after the combing of circuit, it was found that doubtful point finds wherein self-test storage amplification
There is a circuit not transfer between device assembly and service parameter component, by the research to cable louding on aircraft, discovery lacks production
Transit cable between product carries out contrast verification by making cable, conducting, and with the cable on aircraft, transit line is carried out
Rectification；
3. line alignment is investigated in principle analysis：
Still without any instruction after switching, reference voltage amplifies with eliminating after voltage is compared, then by adjustment element into
Signal is eliminated in output after row adjustment；When self-test storage amplifier block, which will eliminate signal, is added to service parameter component, service ginseng
Number component voltage is eliminated, all record power-off, meanwhile, service parameter component is without instruction；Reversely divided eliminating recording process
Analysis, i.e., when service parameter component has instruction, self-test is stored amplifier block and is provided without signal is eliminated；Amplifier group is stored in self-test
Verification is repeatedly connected in connecting cable between part and service parameter component excessively, and there is no problem, to speculate, the two
Between communication without external issues；So, it may be possible to it is not right that reference voltage provides, and reference voltage is provided by power supply component,
Through investigation, when designing cable louding, the circuit that a power supply component leads to service parameter component is lacked, after corrigendum, entirely
System works well.
2. method is repaiied in the examination of certain type Flight Data Record System for Aircraft as described in claim 1, it is characterised in that：
2) main problem solved in the process is repaiied in examination
(1) the solution of problem when decomposing and be surface-treated
1. by making screw, the difficult problem of overhaul time-division solution is effectively reduced；
Many places screw corrosion is serious when analytical product, decomposes and is broken or divides at all inextricable, the spraying D40 derusting at screw
Agent, and decomposed again after being spaced 5min, it decomposes more easily, but do not solve root problem, in order to preferably solve
Easy-to-rust screw has been carried out mapping, made by the problem of screw easy-to-rust, in this way, when product is overhauled, this kind of screw is complete
Portion renews, so that it may the effective problem for reducing overhaul and decomposing difficulty；
2. making surface spraying word be achieved by making hollow-out word aluminium sheet；
There is a product that need to spray crocus in the set Flight Data Record System for Aircraft, and in the shell drying for having sprayed crocus
Afterwards, then the spraying of surface black word marking is carried out, still, the spraying of word marking needs engraving for word marking font format
Empty word aluminium sheet could spray required word marking；Then, by the size of original product word marking, pattern, width and
Position is surveyed and drawn, and has made hollow-out word aluminium sheet, after making hollow-out word aluminium sheet, then it is black with the spraying of high-pressure spray-painted tool
Paint so that the surface lacquer of the product requires to be achieved；
The repairing time is set to greatly shorten 3. the label by improving product surface paints write method；
After each product surface spray painting, it is both needed to each mark of Freehandhand-drawing and piece number, the Freehandhand-drawing need of work of so multi-product is greatly resistance to
The heart and time；Start to be described with writing brush, feel time-consuming and laborious, the rear pen good using blotting effect, with point dip in the method for paint come
It paints and writes, the repairing time is greatly saved；
On aircraft electric switch can not open failure exclusion and equipment detection performance it is perfect；
Performance requirement can be met by carrying out automatic test to each product, and still, on aircraft feeding back the system, there are failures；Due to
It can be gone here and there with troubleshooting without spare part at that time, therefore a whole set of products is sent to army, be tested using the original equipment of army, just
Often；The result tested in test equipment and machine has differences, rear to borrow product successively carry out machine on string part after of the army with model,
It was found that after controlling and exchanging component string use, failure vanishes on machine；Illustrate that controlling and exchange component is implicitly present in failure, and portion
The detection device of team and our factory can not detect that it whether there is the failure.By consulting the drawing on aircraft, in product
Portion's circuit is excluded, and after being detected to suspicious device, the diode damage of a black particles type is found, due to the diode
For import device, the Buying Cycle is very long, and individually buys the device, and producer not provides, and can only carry out the device domestic
The products substitution of change, multichannel analyzer part function, using and after browsing the pertinent texts that production domesticization device substitutes, determine two pole
The effective domestic diode of 2CZ85D types is replaced, and after replacing and installing, aircrafi calibration performance is qualified, does not find by long-term use
Failure occurs again；Since the equipment that army's equipment and our factory are ordered can not detect this failure, illustrate in detection of disembarking
When existing defects, for the undetectable problem of this performance, by cooperating with making apparatus side, perfect this performance
Detection function；
(3) the improvement of the overproof exclusion of sensor transducer module data and the protection of detection device connector contact performance；
When carrying out product test to sensor transformation device assembly, it is found that some signals have output, some signals are without output；The production
Product one share 116 indexs, each index be it is independent, not with other interconnection of signals, after test in the presence of about 40% data not
Correctly.After detecting one time again, the result of detection is different from first time, have passed through the comparison of detection data three times, finds some
There are failures when the data last time is detected, next time just normal；Same test method, failure are carried out with the product of same model
Situation is similar, in this way, can exclude product failure substantially；Therefore consider that product contacts sex chromosome mosaicism, in the connector progress to equipment
It is tested again after polishing, it is found that fault point has been lacked very much, illustrate effective, then docked plug part and carry out deep polishing and repair
Multiple, rear properties of product are intact after tested.
The reason of causing the phenomenon of the failure is that the connector oxidation resistance is poor, and how to protect is a problem；Gold has very strong
Anti-oxidation characteristics, and resistance is very low, and use for a long time can keep its signal communication good, first it is contemplated that by the connector
Carry out Gold plated Layer protective treatment.But so huge connector and subsidiary cable are dismantled, electroplating processes, task
Amount is very big, and remakes an indifference, moreover, be easy to causeing the damage of conduction property and zero spare part；By connector nothing
Water-ethanol is cleaned, and protective jacket is used in combination to be sealed against, and when in use again removes protective jacket；In this way, connector can be improved
Antioxygenic property, afterwards product verification in the failure caused by connector contact performance is bad did not occurred；
(4) the solution of the unqualified Frequent Troubles of delivery temperature measurement module output voltage and partial circuit mapping；
The module is used to zoom into (0~100) mV DC voltages that self-rectified apparatus sends over the DC voltage of (0~6) V
It is conveyed to winged ginseng.The underproof failure rate of output of products voltage is higher, because internal components are import, the appearance of component
It is larger with domestic gap, it is difficult to differentiate, to solve this failure, tune is had found by the methods of mapping circuit, comparative analysis
The method of whole output voltage；The product has two pieces of circuit boards, can be by output electricity by adjusting the potentiometer in base circuit board
Pressure is adjusted；By the mapping to circuit board, technical support is had accumulated for the product, is conducive to the understanding of the type principle of products
And the exclusion to the other failures of type product.
3. method is repaiied in the examination of certain type Flight Data Record System for Aircraft as claimed in claim 2, it is characterised in that：
2) main problem solved in the process is repaiied in examination
On aircraft electric switch can not open failure exclusion and equipment detection performance it is perfect；
Performance requirement can be met by carrying out automatic test to each product, and still, on aircraft feeding back the system, there are failures；Due to
It can be gone here and there with troubleshooting without spare part at that time, therefore a whole set of products is sent to army, be tested using the original equipment of army, just
Often；The result tested in test equipment and machine has differences, rear to borrow product successively carry out machine on string part after of the army with model,
It was found that after controlling and exchanging component string use, failure vanishes on machine；Illustrate that controlling and exchange component is implicitly present in failure, and portion
The detection device of team and our factory can not detect that it whether there is the failure.By consulting the drawing on aircraft, in product
Portion's circuit is excluded, and after being detected to suspicious device, the diode damage of a black particles type is found, due to the diode
For import device, the Buying Cycle is very long, and individually buys the device, and producer not provides, and can only carry out the device domestic
The products substitution of change, multichannel analyzer part function, using and after browsing the pertinent texts that production domesticization device substitutes, determine two pole
The effective domestic diode of 2CZ85D types is replaced, and after replacing and installing, aircrafi calibration performance is qualified, does not find by long-term use
Failure occurs again；Since the equipment that army's equipment and our factory are ordered can not detect this failure, illustrate in detection of disembarking
When existing defects, for the undetectable problem of this performance, by cooperating with making apparatus side, perfect this performance
Detection function.
4. method is repaiied in the examination of certain type Flight Data Record System for Aircraft as claimed in claim 3, it is characterised in that：
2) main problem solved in the process is repaiied in examination
(3) the improvement of the overproof exclusion of sensor transducer module data and the protection of detection device connector contact performance；
When carrying out product test to sensor transformation device assembly, it is found that some signals have output, some signals are without output；The production
Product one share 116 indexs, each index be it is independent, not with other interconnection of signals, after test in the presence of about 40% data not
Correctly.After detecting one time again, the result of detection is different from first time, have passed through the comparison of detection data three times, finds some
There are failures when the data last time is detected, next time just normal；Same test method, failure are carried out with the product of same model
Situation is similar, in this way, can exclude product failure substantially；Therefore consider that product contacts sex chromosome mosaicism, in the connector progress to equipment
It is tested again after polishing, it is found that fault point has been lacked very much, illustrate effective, then docked plug part and carry out deep polishing and repair
Multiple, rear properties of product are intact after tested.
The reason of causing the phenomenon of the failure is that the connector oxidation resistance is poor, and how to protect is a problem；Gold has very strong
Anti-oxidation characteristics, and resistance is very low, and use for a long time can keep its signal communication good, first it is contemplated that by the connector
Carry out Gold plated Layer protective treatment.But so huge connector and subsidiary cable are dismantled, electroplating processes, task
Amount is very big, and remakes an indifference, moreover, be easy to causeing the damage of conduction property and zero spare part；By connector nothing
Water-ethanol is cleaned, and protective jacket is used in combination to be sealed against, and when in use again removes protective jacket；In this way, connector can be improved
Antioxygenic property, afterwards product verification in the failure caused by connector contact performance is bad did not occurred.
5. method is repaiied in the examination of certain type Flight Data Record System for Aircraft as claimed in claim 4, it is characterised in that：
2) main problem solved in the process is repaiied in examination
(4) the solution of the unqualified Frequent Troubles of delivery temperature measurement module output voltage and partial circuit mapping；
The module is used to zoom into (0~100) mV DC voltages that self-rectified apparatus sends over the DC voltage of (0~6) V
It is conveyed to winged ginseng.The underproof failure rate of output of products voltage is higher, because internal components are import, the appearance of component
It is larger with domestic gap, it is difficult to differentiate, to solve this failure, tune is had found by the methods of mapping circuit, comparative analysis
The method of whole output voltage；The product has two pieces of circuit boards, can be by output electricity by adjusting the potentiometer in base circuit board
Pressure is adjusted；By the mapping to circuit board, technical support is had accumulated for the product, is conducive to the understanding of the type principle of products
And the exclusion to the other failures of type product.
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Address after: No. 3127, Changzhong Road, Jing'an District, Shanghai 200436 Patentee after: SHANGHAI HAIYING MACHINERY PLANT Address before: No. 3127, Changzhong Road, Hongkou District, Shanghai, 200080 Patentee before: SHANGHAI HAIYING MACHINERY PLANT |