CN107064665A - Electronic product combined stress strenuous test method - Google Patents
Electronic product combined stress strenuous test method Download PDFInfo
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- CN107064665A CN107064665A CN201611087312.6A CN201611087312A CN107064665A CN 107064665 A CN107064665 A CN 107064665A CN 201611087312 A CN201611087312 A CN 201611087312A CN 107064665 A CN107064665 A CN 107064665A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/003—Environmental or reliability tests
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
- G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
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- Chemical & Material Sciences (AREA)
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- Environmental & Geological Engineering (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The present invention relates to a kind of electronic product combined stress strenuous test method, belong to electronic product experimental technique field.1) present invention clearly proposes strenuous test section of the armored vehicle electronic product based on combined stress:Combined stress is constituted by Wen Xun, vibration, electric stress;2) the application scheme clearly given temperature stress in combined stress strenuous test section:Testing program is followed using quick temperature;3) the application scheme clearly given vibration stress in combined stress strenuous test section:Using random vibration test scheme.The present invention, there is provided a kind of testing program of stand checking in addition to the sport car verification method of outfield, reduces the dependence to vehicle on product reliability weak spot is excited;The product riskses point that moved forward is controlled, and reduces the lead time;It can more precisely, efficiently carry out the weak point location of reliability and rectification.
Description
Technical field
The present invention relates to electronic product experimental technique field, and in particular to a kind of electronic product combined stress strenuous test side
Method.
Background technology
With the strong trend of intelligent, the full electrification development of vehicle, the quantity of vehicle electronics part increases swift and violent, part
Inside chip quantity, integrated difficulty also show exponential curve ascendant trend, exist in addition after complicated circuit combination special, critical
Under the conditions of the unpredictable phenomenon such as saltus step, drift, failure, if without special reliability design and verification experimental verification, integrated level
Its reliability level of higher electronic product in theory will be lower.
Combined stress strenuous test belongs to lifting product reliability design, the investigation test of fail-safe analysis.By carrying
The environmental stress (high temperature, low temperature, shock and vibration, damp and hot) and electric stress of high product experiment, reach exposing product in a short time
The purpose of function and performance weak spot, and then technical improvements are formulated, to improve product reliability, the reliability to product increases
Length has great importance.
There are the following problems for current similar experiment:
1) research field not yet forms the bench test scheme of current combined stress strenuous test, and shortage can be performed specifically
Test method and foundation;
2) five experiments (high temperature, low temperature, shock and vibration, damp and hot) are all performance verification experiments asynchronous, in short-term, not enough
With the reliability of comprehensive assessment product;
3) particularity of armor products, each parameter reinforcing index of the field electronic product strenuous test can not be with reference to boat
The military industry fields such as sky, space flight, ship.Too high reinforcing index will result directly in the irreversible damage of product;Too low reinforcing index
Reinforcing, the purpose accelerated are not reached, intensifier defines difficulty, lacks engineering experience.
The content of the invention
(1) technical problem to be solved
The technical problem to be solved in the present invention is:How a kind of electronic product combined stress strenuous test method is designed, with
Reduce the dependence to vehicle;Move forward the control of product riskses point, reduces the lead time, more precisely, efficiently carries out reliability weak
Point location and rectification.
(2) technical scheme
In order to solve the above-mentioned technical problem, the invention provides a kind of electronic product combined stress strenuous test method, bag
Include following steps:
A. test item is rigidly connected on the vibration table in three combined test chambers, and ensures test item surrounding flow energy
It is enough to flow freely;
B. temperature sensor is arranged on the focus inside test item, control vibrating sensor is reliably pasted
On the control point of selection, monitoring vibrating sensor is arranged at the focus determined in vibratory response measurement;
C. test equipment is connected by test request, and normal temperature is powered test before being tested test item, it is determined that subject
Product function and performance are normal;
D. temperature change stress is applied to test item, applies vibration stepstress to test item, and synchronously apply electric stress;
E. the change of electric stress is noted during fast temperature fluctuating stress and vibration stress application;
F. when overproof performance or function forfeiture occurs in test item, vibration is stopped, and suspend experiment;If being due to that vibration is drawn
When overproof performance or function forfeiture occurs in the test item risen, then g-l is performed, g '~j ' is otherwise performed;
G. vibration stress is reduced to initial vibration magnitude;
H. confirm whether function, the performance of test item can be recovered, and carry out accident analysis, positioning is with repairing failure, if not
It can repair and then be changed;
I. after repairing or change, install monitoring additional in the reparation point of vibration table or after changing with repairing on the corresponding point of point and use
Vibrating sensor;
J. the vibration level during forfeiture of directly overproof to test item applying performance or function, verifies the validity repaired;
If k. trouble point is due to caused by stress concentration or is resonance point, now the trouble point is moved from test item
Go out, damaged with avoiding vibrational excitation from again resulting in the point;
L. return to step f, until the trouble point of predetermined number is have found, or the stress applied is sufficiently large, then terminates examination
Test;
Can g ' return to temperature stress after normal temperature, temperature stabilization to observe test item and work recover normal;
H ' illustrates that test item has been damaged if test items can not recover corresponding function and performance, carries out fault location and repaiies
It is multiple, again before input experiment, the protection of anti-fast temperature change is carried out to the trouble point of reparation, if can not repair can not also enter
Row protection is then changed;If test item function and performance recovery are normal, illustrate that temperature change stress is not caused not to test item
It is reversible to damage, possible trouble point is analyzed and positioned, if can position, anti-fast temperature is carried out to trouble point
The protection of change, again input experiment;If cannot rely on analysis to be positioned, experiment is direct plungeed into, it is believed that have found weakness
Point, and the weak spot is excited into trouble point;
J ' return to step f, until have found the weak spot of predetermined number, then terminate experiment.
Preferably, in step a, test item is rigidly connected to the vibration table in three combined test chambers by test fixture
On.
Preferably, in step e, the change of the electric stress includes the change of electric current, voltage and power.
Preferably, in step h ', the guard method of anti-fast temperature change is:Apply heat resistant material.
Preferably, the electronic product is armored vehicle electronic product.
(3) beneficial effect
The present invention is on product reliability weak spot is excited, and there is provided a kind of stand in addition to the sport car verification method of outfield
The testing program of checking, reduces the dependence to vehicle;The product riskses point that moved forward is controlled, and reduces the lead time;Can be more
Precisely, it is efficient to carry out the weak point location of reliability and rectification.
Brief description of the drawings
Fig. 1 is fast temperature cyclic test section;
Fig. 2 is the typical spectral pattern (random vibration) of creeper truck in GJB150.16A;
Fig. 3 is that combined stress strenuous test circulates section.
Embodiment
To make the purpose of the present invention, content and advantage clearer, with reference to the accompanying drawings and examples, to the present invention's
Embodiment is described in further detail.
The embodiments of the invention provide a kind of armored vehicle electronic product combined stress strenuous test method, including following step
Suddenly:
A. test item is rigidly connected on the vibration table in three combined test chambers by test fixture, and ensures subject
Product surrounding flow can be flowed freely;
B. temperature sensor is arranged on the focus inside test item (multiple spot of trying one's best, to determine the temperature of test item
Stable state), control is reliably pasted onto on the control point of selection with vibrating sensor, determined in vibratory response measurement
Monitoring vibrating sensor is arranged at focus;
C. test equipment is connected by test request, and normal temperature is powered test before being tested test item, it is determined that subject
Product function and performance are normal;
D. temperature change stress is applied to test item by Fig. 1, applying vibration stepping to test item by Fig. 2, the condition of table 1 answers
Power, and synchronously apply electric stress by Fig. 3;
The creeper truck of table 1 fastens the narrow-band random vibration routine data of goods
Fig. 1 explanations:If the low-temperature working limit of armored vehicle electronic product is -55 DEG C;The hot operation limit is 85 DEG C.
Consider the surplus of the temperature cycles process of product, the general low-temperature working limit is set to -50 DEG C, and the hot operation limit is set to 80 DEG C.
The common method tested according to fast temperature pulsating stress, circulating path is the circulation of " low temperature --- high temperature --- low temperature ... "
Experiment, its warm variability is typically no less than 15 DEG C/min (faster temperature cycles are stress-induced stronger), to meet wanting for test effect
Ask, it is necessary to carry out 11 temperature cycling tests;The nominal value of electric stress is 28V, and higher limit is 33V, and lower limit is 20V, is powered
Order should be according to " higher limit --- nominal value --- lower limit --- nominal value --- higher limit ... ".Consider product testing
Time, efficiency and expense.Temperature cycling test design in the product combined stress strenuous test is as follows:Cryogenic temperature:-50
℃;High-temperature temperature:80℃;Rate temperature change:15℃/min;Each temperature stabilization residence time:60min;During Product checking
Between:10min (product need to be switched 5 times).
Fig. 2, table 1 illustrate:Grope by demonstration and experiment, armored vehicle electronic product stepping vibration spectral pattern is adapted to reference
The C.4 middle typical random spectral pattern of 5-500Hz creeper trucks is schemed in GJB150.16A, D.1 creeper truck fastens goods to vibration data selection table
Narrow-band random vibration data, with the data bit primary data in table, be stepped up value.It is every after increasing 10% to 150% every time
It is secondary increase 5%, until product bug or to original value 170%.Vibrate step-length:The 10% of initial magnitude, after increasing to 150%
Step-length uses 5%;Each stable residence time of vibration:10min;The Product checking time:10min (product need to be switched 5 times);Experiment
Continue to that the vibration fault or experiment value of test item to original 170%, then stop experiment.
Fig. 3 explanations:According to the common method of combined stress strenuous test, be usually based on temperature cycles, vibration stepping,
Tested under the generalized section that electric stress circulation applies.Temperature cycles apply according to Fig. 1 fast temperatures pulsating stress, vibration step
Enter stress according to the type spectrum and data of Fig. 2 and table 1 to be applied, electric stress should be according to " higher limit --- nominal value --- lower limit
Value --- nominal value --- higher limit ... " is applied.Product not upper electricity during low temperature is considered simultaneously, is kept during high temperature on product
The upper electric opportunity of electricity.
E. fast temperature fluctuating stress and vibration stress application during note electric stress change, including electric current,
The change of voltage and power;
F. when overproof performance or function forfeiture occurs in test item, stopping vibrating, and suspend experiment (is not influenceing safe
In the case of as far as possible allow test item not power off);If there is overproof performance or function forfeiture in test item caused by being due to vibration,
G-l is performed, g '~j ' is otherwise performed;
G. vibration stress is reduced to initial vibration magnitude;
H. confirm whether function, the performance of test item can be recovered, and carry out accident analysis, positioning is with repairing failure, if not
It can repair and then be changed;
I. after repairing or change, add in the reparation point of vibration table or after changing with repairing on the corresponding point of point (or nearby)
Monitoring vibrating sensor is filled, to understand the vibratory response situation of fault point on test item;
J. the vibration level during forfeiture of directly overproof to test item applying performance or function, verifies the validity repaired;
If k. trouble point is due to caused by stress concentration or is resonance point, now the trouble point is moved from test item
Go out, damaged with avoiding vibrational excitation from again resulting in the point;
L. return to step f, until the trouble point (weak link) of predetermined number is have found, or the stress applied is enough
Greatly, then experiment is terminated;
G ' temperature stress is returned to after normal temperature, temperature stabilization observe test item work can recover it is normal (can be to subject
Product carry out restarting observation);
H ' illustrates that test item has been damaged if test items can not recover corresponding function and performance, carries out fault location and repaiies
It is multiple, again before input experiment, the protection that the anti-fast temperature of heat resistant material changes is coated to the trouble point of reparation, if nothing
Method reparation can not also be protected, and be changed;If test item function and performance recovery are normal, illustrate temperature change stress pair
Test item does not cause irreversible damage, and possible trouble point is analyzed and positioned, if can position, to trouble point
It is coated the protection of the anti-fast temperature change of heat resistant material, again input experiment;If cannot rely on analysis to be positioned,
Direct plunge into experiment, it is believed that have found weak spot, and the weak spot is excited into trouble point;
J ' return to step f, until have found the weak spot (link) of predetermined number, then terminate experiment.
Reliability test of this method based on electronic product is theoretical, is required according to product design, and use environment feature,
With reference to long-term engineering groping experience, conclude and propose a kind of engineer applied method of combined stress strenuous test.
The present invention is the foundations, reference such as the use environment based on armored vehicle electronic product, electrical characteristic, related national military standard
The industry testing program in the fields such as Aeronautics and Astronautics, ship, takes into full account the harsh temperature of armored vehicle electronic product, vibration, electricity
The exclusive feature such as stress, gropes after the verification experimental verification of experiment and model project by substantial amounts of, and conclusion proposes a kind of suitable
Together in armored vehicle electronic product based on the combined stress strenuous test scheme of quick Wen Xun, random vibration and electric stress and examination
Proved recipe method, and each test procedure and key parameter numerical value are clearly given, with stronger engineering operability.The testing program
Test profile both as far as possible laminating real vehicle use environment, appropriate combined stress intensifier is added again, has been reached by stand
Experiment, using test period as few as possible, spends testing expenses as few as possible, accelerates exposure analog equipment to be used in real vehicle
Reliability weak spot that may be present in environment, shortens the time for searching design deficiency/hidden danger, Improving Project development efficiency.
The embodiment of the present invention 1) clearly propose strenuous test section of the armored vehicle electronic product based on combined stress:By
Wen Xun, vibration, electric stress composition combined stress;2) application clearly given temperature stress in combined stress strenuous test section
Scheme:Testing program is followed using quick temperature;3) the application side clearly given vibration stress in combined stress strenuous test section
Case:Using random vibration test scheme;4) the application scheme clearly given electric stress in combined stress strenuous test section:It is comprehensive
The many factors such as national military standard, real vehicle operating mode and reinforcing examination are closed, concludes and proposes special electrical stress test scheme;5) clearly given
By each key parameter numerical value under the combined stress strenuous test section of abundant engineering verification:Quick Wen Xun heating rate, height
Warm cut off, low temperature cut off;Step stride, the cut off of random vibration;Higher limit, lower limit of electric stress etc..
The present invention can produce following beneficial effect:
1st, on product reliability weak spot is excited, there is provided a kind of checking of stand in addition to the sport car verification method of outfield
Testing program, reduce the dependence to vehicle.
2nd, the control of reach product riskses point, reduces the lead time.
Combined stress strenuous test was carried out in the development stage, took " model machine completion --- strenuous test --- exposure/fixed
Position reliability weak spot --- Curve guide impeller/technique --- return checking --- new product improvement --- product export to deliver "
Experiment process, changes former " product export delivery --- vehicle general assembly --- sport car failure --- live troubleshooting/depot repair ---
Reassemble sport car checking " flow, the risk point of product is controlled to move forward, product development cycle is significantly reduced.
3rd, the weak point location of more accurate, efficient reliability and rectification.
Combined stress strenuous test is to carry out the complete of combined stress by equipment such as dedicated test frock, three multi-function test stands
Face injection, the overall monitor of working condition are implemented.The injection of environmental stress and electric stress is from normal stress progressively step
What formula was applied, step stride and time can reach according to being adjusted flexibly the need for fault location and precisely determine to cause
Environmental stress or electric stress condition during failure.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvement and deformation can also be made, these improve and deformed
Also it should be regarded as protection scope of the present invention.
Claims (5)
1. a kind of electronic product combined stress strenuous test method, it is characterised in that comprise the following steps:
A. test item is rigidly connected on the vibration table in three combined test chambers, and ensures that test item surrounding flow can be certainly
By flowing;
B. temperature sensor is arranged on the focus inside test item, control is reliably pasted onto choosing with vibrating sensor
On the control point selected, monitoring vibrating sensor is arranged at the focus determined in vibratory response measurement;
C. test equipment is connected by test request, and normal temperature is powered test before being tested test item, determines test item work(
Can be normal with performance;
D. temperature change stress is applied to test item, applies vibration stepstress to test item, and synchronously apply electric stress;
E. the change of electric stress is noted during fast temperature fluctuating stress and vibration stress application;
F. when overproof performance or function forfeiture occurs in test item, vibration is stopped, and suspend experiment;If being due to caused by vibration
When overproof performance or function forfeiture occurs in test item, then g-l is performed, g '~j ' is otherwise performed;
G. vibration stress is reduced to initial vibration magnitude;
H. confirm whether function, the performance of test item can be recovered, and carry out accident analysis, positioning can not such as be repaiied with repairing failure
It is multiple then changed;
I. after repairing or change, monitoring vibration is installed additional on point corresponding with repairing point after the reparation point of vibration table or replacing
Sensor;
J. the vibration level during forfeiture of directly overproof to test item applying performance or function, verifies the validity repaired;
If k. trouble point is due to caused by stress concentration or is resonance point, now the trouble point is removed from test item, with
Vibrational excitation is avoided to again result in point damage;
L. return to step f, until the trouble point of predetermined number is have found, or the stress applied is sufficiently large, then terminates experiment;
Can g ' return to temperature stress after normal temperature, temperature stabilization to observe test item and work recover normal;
H ' illustrates that test item has been damaged if test items can not recover corresponding function and performance, carries out fault location and reparation,
Again before input experiment, the protection of anti-fast temperature change is carried out to the trouble point of reparation, if can not repair can not also be carried out
Protection is then changed;If test item function and performance recovery are normal, illustrating that temperature change stress is not caused to test item can not
The damage of reverse, is analyzed and is positioned to possible trouble point, if can position, and anti-fast temperature change is carried out to trouble point
The protection of change, again input experiment;If cannot rely on analysis to be positioned, experiment is direct plungeed into, it is believed that have found weak spot,
And the weak spot is excited into trouble point;
J ' return to step f, until have found the weak spot of predetermined number, then terminate experiment.
2. the method as described in claim 1, it is characterised in that in step a, test item is rigidly connected to by test fixture
On vibration table in three combined test chambers.
3. the method as described in claim 1, it is characterised in that in step e, the change of the electric stress includes electric current, voltage
With the change of power.
4. the method as described in claim 1, it is characterised in that in step h ', the guard method of anti-fast temperature change is:Apply
Apply heat resistant material.
5. the method as any one of Claims 1-4, it is characterised in that the electronic product is armored vehicle electronics
Product.
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CN107782995A (en) * | 2017-10-23 | 2018-03-09 | 中国北方车辆研究所 | A kind of electronic product combined stress is known the real situation test method |
CN108593235A (en) * | 2018-04-27 | 2018-09-28 | 成都麦隆电气有限公司 | A kind of test method and test system |
CN109540559A (en) * | 2018-11-27 | 2019-03-29 | 上海航天计算机技术研究所 | A kind of stress resultant screening test method being applicable in on-board equipment |
CN110068436A (en) * | 2019-04-04 | 2019-07-30 | 航天科工防御技术研究试验中心 | A kind of the vibration control implementation method and equipment of heat vibration detection |
CN111062183A (en) * | 2020-03-06 | 2020-04-24 | 北京强度环境研究所 | Multi-stress strengthening test profile compiling method and device and computer storage medium |
CN111504629A (en) * | 2020-05-09 | 2020-08-07 | 上海华碧检测技术有限公司 | Alternative test method for traditional type test of electronic connector |
CN112213128A (en) * | 2020-06-11 | 2021-01-12 | 广东科鉴检测工程技术有限公司 | Test method for rapidly improving reliability of instrument and equipment |
CN112362277A (en) * | 2020-10-28 | 2021-02-12 | 北京机电工程研究所 | Comprehensive test method for aircraft |
CN112684324A (en) * | 2020-12-30 | 2021-04-20 | 无锡市同步电子科技有限公司 | Method for rapidly exciting and verifying faults of PCB for airborne electronic controller |
CN112697456A (en) * | 2020-12-10 | 2021-04-23 | 奇瑞汽车股份有限公司 | Reliability test method for automobile circuit system |
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CN107782995A (en) * | 2017-10-23 | 2018-03-09 | 中国北方车辆研究所 | A kind of electronic product combined stress is known the real situation test method |
CN108593235A (en) * | 2018-04-27 | 2018-09-28 | 成都麦隆电气有限公司 | A kind of test method and test system |
CN109540559A (en) * | 2018-11-27 | 2019-03-29 | 上海航天计算机技术研究所 | A kind of stress resultant screening test method being applicable in on-board equipment |
CN110068436A (en) * | 2019-04-04 | 2019-07-30 | 航天科工防御技术研究试验中心 | A kind of the vibration control implementation method and equipment of heat vibration detection |
CN110068436B (en) * | 2019-04-04 | 2021-03-30 | 航天科工防御技术研究试验中心 | Vibration control implementation method and device for thermal vibration detection |
CN111062183A (en) * | 2020-03-06 | 2020-04-24 | 北京强度环境研究所 | Multi-stress strengthening test profile compiling method and device and computer storage medium |
CN111504629A (en) * | 2020-05-09 | 2020-08-07 | 上海华碧检测技术有限公司 | Alternative test method for traditional type test of electronic connector |
CN112213128A (en) * | 2020-06-11 | 2021-01-12 | 广东科鉴检测工程技术有限公司 | Test method for rapidly improving reliability of instrument and equipment |
CN112362277A (en) * | 2020-10-28 | 2021-02-12 | 北京机电工程研究所 | Comprehensive test method for aircraft |
CN112697456A (en) * | 2020-12-10 | 2021-04-23 | 奇瑞汽车股份有限公司 | Reliability test method for automobile circuit system |
CN112684324A (en) * | 2020-12-30 | 2021-04-20 | 无锡市同步电子科技有限公司 | Method for rapidly exciting and verifying faults of PCB for airborne electronic controller |
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