CN102495307A - Flat panel television reliability test method - Google Patents
Flat panel television reliability test method Download PDFInfo
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- CN102495307A CN102495307A CN2011103838816A CN201110383881A CN102495307A CN 102495307 A CN102495307 A CN 102495307A CN 2011103838816 A CN2011103838816 A CN 2011103838816A CN 201110383881 A CN201110383881 A CN 201110383881A CN 102495307 A CN102495307 A CN 102495307A
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Abstract
The invention relates to a flat panel television reliability test method. The method comprises the following steps: (a) carrying out stepping decrease on a temperature to 40 DEG C below zero, and testing a core plate at each temperature point; (b) carrying out stepping increase on the temperature to 80 DEG C, and testing the core plate at each temperature point; (c) testing the core plate in a cycle of 30 DEG C below zero and 80 DEG C; (d) carrying out 4 Grms to 40 Grms vibration stepping increase, and testing the core plate at each vibration point; (e) testing the core plate in the cycle of 30 DEG C below zero and 80 DEG C, and carrying out 6 Grms to 28 Grms vibration stepping increase test on the core plate simultaneously; (f) testing a whole machine at 40 DEG C to 65 DEG C; (g) testing the whole machine at 0 DEG C to 32 DEG C; (h) testing the whole machine at 0.1 Grms to 0.5 Grms; wherein in steps of (a) to (h), alternating current electric stress of 100V/47Hz and 240V/63 Hz are applied to a test product alternatively. According to the method, problems of low efficiency and high cost in a traditional reliability test can be effectively solved, and a reliability level of the product can be raised obviously and greatly.
Description
Technical field
The present invention relates to a kind of testing method, is the method for flat panel TV fail-test concretely.
Background technology
Household electric appliances have the characteristics of R&D cycle weak point, Market competition, and require the reliability of products level higher usually, and there are many difficulties in the work of fail-test.Traditional flat panel TV fail-test is only to the fail-test technology of parts such as TV core plate through the simulated environment authenticity; Important means as the assay product reliability level; Single owing to the means of classic method, tried the parts limitation, the fail-test cycle is long, cost is high, implement reasons such as difficulty is big; Make the product of process fail-test still a lot of defectives can remainingly be arranged, more and more be difficult to satisfy the demand of current electronic product industry develop rapidly.
Summary of the invention
To the problem of above appearance, the invention provides a kind of method of flat panel TV fail-test, can effectively solve the efficient of traditional fail-test low with problem such as cost height, improve product reliability level.
The method of flat panel TV fail-test of the present invention comprises the test of TV core plate fail-test and whole aircraft reliability,
The machine core board fail-test comprises:
The temperature stress test:
A. since 0 ℃, the temperature stepping is decremented to-40 ℃, and each test temperature point carried out temperature stress to machine core board in lasting 5～30 minutes to be tested;
B. since 50 ℃, the temperature stepping is incremented to 80 ℃, and each test temperature point carried out temperature stress to machine core board in lasting 5～30 minutes to be tested;
C. circulate at least at two temperature spots of-30 ℃ and 80 ℃ and 5 times machine core board carried out warm variable-stress level test, warm variable Rate is 60 ℃/minute, and each temperature spot continues machine core board to be carried out the temperature stress test in 5～10 minutes;
The random vibration stress test:
D. from 4Grms (acceleration root-mean-square value) beginning, the vibration step increments is to 40Grms, and each test oscillation point was carried out vibration stress to machine core board in lasting 5～15 minutes and tested;
The combined stress test:
E. circulate at least at two temperature spots of-30 ℃ and 80 ℃ and 5 times machine core board carried out warm variable-stress level test, warm variable Rate is 60 ℃/minute, and each temperature spot continues machine core board to be carried out the temperature stress test in 5～10 minutes; When said two temperature spots being carried out the temperature stress test, machine core board is carried out the initial step increments vibration stress test from 6Grms, vibration is incremented to 28Grms during loop ends;
The whole aircraft reliability test comprises:
The temperature stress test:
F. televisor complete machine at least 2 test temperature points under 40 ℃～65 ℃ are carried out the temperature stress test;
G. televisor complete machine at least 4 test temperature points under 0 ℃～-32 ℃ are carried out the temperature stress test;
The random vibration stress test:
H. begin from 0.1Grms, the vibration step increments is to 0.5Grms, and each test oscillation point was carried out vibration stress to the televisor complete machine in lasting 20 minutes and tested;
In the process of step a～h, alternately apply the alternating current stress of 10 minutes 100V/47Hz and 10 minutes 240V/63Hz to receiving trial product through the AC frequency conversion power supply.
Method of the present invention is to adopt the proof stress that product is not limited to the environment for use condition; Through the temperature stress that progressively strengthens excite with exposing product in potential problems, more help fully finding and solving processing quality problems such as design defect relevant in the product design and rosin joint with warm varying stress.And vibration test, compbined test and overall test have been increased; TV components and complete machine many middle means and omnibearing test detection have been carried out; Guaranteed that television components and complete machine can both guarantee good performance, the quality that improved product under various severe temperatures and vibration.
Preferably, the test temperature spot is 0 ℃ ,-20 ℃ ,-32 ℃ ,-35 ℃ and-40 ℃ in chronological order among the step a, and each test temperature point continues 10 minutes;
The test temperature spot is 50 ℃, 60 ℃, 72 ℃ and 80 ℃ in chronological order among the step b, and each test temperature point continues 10 minutes;
Among the step c two temperature spots circulations of-30 ℃ and 80 ℃ 5 times;
Step value in the steps d is 4Grms, continues 10 minutes in each test oscillation point;
Two temperature spots circulations of-30 ℃ and 80 ℃ 5 times, each temperature experiment point is lasting 10 minutes in the temperature stress test among the step e; In the test of step increments vibration stress; The round-robin vibration stress is 6Grms for the first time, and the round-robin vibration stress is 12Grms for the second time, and the round-robin vibration stress is 18Grms for the third time; The 4th time the round-robin vibration stress is 24Grms, and the 5th time the round-robin vibration stress is 28Grms;
Test temperature among the step f is 55 ℃ and continues 2 hours that 65 ℃ continue 24 hours;
Test temperature in the step g is that each continues 1.5 hours 0 ℃ ,-10 ℃ ,-20 ℃ and-32 ℃;
Step h vibration stress step value is 0.1Grms.
Further; In the steps d when vibration stress value >=20Grms;, each test magnitude replenishes the vibration of a 4Grms magnitude after accomplishing; The sequential time is 2 minutes, at this moment between in the machine core board performance is carried out quick check, prevent to omit the fault mode that under the high-magnitude vibration stress, can't expose.
Based on identical principle, also can be in the step increments vibration stress among step e test, when vibration stress value >=20Grms, accomplish the vibration of the additional 4Grms magnitude in back in each test magnitude, the sequential time is 2 minutes.
Further, when machine core board is in running order among the step b after each test temperature point continued 5 minutes the performance of the said machine core board of inspection, help guaranteeing the machine core board detection that when each test temperature point is in thermal steady state, makes an experiment.
From the consideration that reduces cost; Can be only among the step a to the detection that makes an experiment of the machine core board performance in 0 ℃ to-32 ℃ scope; To among the step b to the detection that makes an experiment of the machine core board performance in 50 ℃ to the 72 ℃ scopes; The fault that surpasses the appearance of said scope belongs to improper use or extreme case usually, can when development, not handle it.
The method of flat panel TV fail-test of the present invention can effectively solve the low and high problem of cost of efficient in traditional fail-test, can obviously increase substantially the reliability of products level.
Below in conjunction with embodiment, foregoing of the present invention is remake further detailed description by the accompanying drawing illustrated embodiment.But should this be interpreted as that the scope of the above-mentioned theme of the present invention only limits to following instance.Do not breaking away under the above-mentioned technological thought situation of the present invention, various replacements or change according to ordinary skill knowledge and customary means are made all should comprise within the scope of the invention.
Description of drawings
Fig. 1 is the method flow diagram of flat panel TV fail-test of the present invention.
Fig. 2 is the temperature-time relationship synoptic diagram of machine core board rapid temperature variable-stress level test among Fig. 1.
Embodiment
The method of flat panel TV fail-test as shown in Figure 1 comprises the test of TV core plate fail-test and whole aircraft reliability, and the machine core board fail-test comprises:
The temperature stress test:
A. the machine core board with panel TV set is positioned over enforcement low temperature step stress test in the strenuous test platform separately.Prolong the connecting line of assemblies such as itself and power panel, remote control panel, screen, connecting line length is 1.2 meters to 1.5 meters, with increase DC voltage, on shield decay stress such as signal.
Since 0 ℃, the temperature stepping is decremented to-40 ℃, and test temperature point is 0 ℃ ,-20 ℃ ,-32 ℃ ,-35 ℃ and-40 ℃ in chronological order, and each test temperature point carried out temperature stress to machine core board in lasting 10 minutes to be tested;
B. the machine core board with panel TV set is positioned over enforcement high temperature step stress test in the strenuous test platform separately.Since 50 ℃; The temperature stepping is incremented to 80 ℃; Test temperature point is 50 ℃, 60 ℃, 72 ℃ and 80 ℃ in chronological order; Each test temperature point continues machine core board to be carried out the temperature stress test in 10 minutes, when central layer is in running order each test temperature point after lasting 5 minutes to the detection that makes a service test of said machine core board;
C. the machine core board with panel TV set is positioned over enforcement rapid temperature variable-stress level test in the strenuous test platform separately.As shown in Figure 2, two temperature spots circulations of-30 ℃ and 80 ℃ 5 times machine core board is carried out warm variable-stress level test, warm variable Rate is 60 ℃/minute, each temperature spot continues machine core board to be carried out the temperature stress test in 5 minutes;
The random vibration stress test:
D. use unit clamp that the machine core board of panel TV set is fixed in separately on the strenuous test platform Pneumatic immpacting table top, implement the vibration step stress test.From 4Grms (acceleration root-mean-square value) beginning, to 40Grms, each test oscillation point was carried out vibration stress to machine core board in lasting 10 minutes and is tested with step value 4Grms step increments.When vibration stress value >=20Grms;, each test magnitude replenishes the vibration of a 4Grms magnitude after accomplishing; The sequential time is 2 minutes, at this moment between in the machine core board performance is carried out quick check, prevent to omit the fault mode that under the high-magnitude vibration stress, can't expose;
The combined stress test:
E. use unit clamp that the machine core board of panel TV set is fixed in separately on the strenuous test platform Pneumatic immpacting table top, implement the combined stress test.Two temperature spots circulations of-30 ℃ and 80 ℃ 5 times machine core board is carried out warm variable-stress level test, warm variable Rate is 60 ℃/minute, and each temperature spot continues machine core board to be carried out the temperature stress test in 10 minutes; When said two temperature spots being carried out the temperature stress test, machine core board is carried out the initial step increments vibration stress test from 6Grms, vibration is incremented to 28Grms during loop ends.Being specially for the first time, the round-robin vibration stress is 6Grms; The round-robin vibration stress is 12Grms for the second time, and the round-robin vibration stress is 18Grms for the third time, and the 4th time the round-robin vibration stress is 24Grms; The 5th time the round-robin vibration stress is 28Grms; When vibration stress value >=20Grms, accomplish the vibration of the additional 4Grms magnitude in back in each test magnitude, the sequential time is 2 minutes; In at this moment the machine core board performance is carried out quick check, prevent to omit the fault mode that under the high-magnitude vibration stress, can't expose;
The whole aircraft reliability test comprises:
The temperature stress test:
F. the complete machine with flat panel TV is positioned in three combined test chambers, implements the hot operation test.The televisor complete machine is 55 ℃ in test temperature continues 2 hours that 65 ℃ continue to carry out in 24 hours the temperature stress test;
G. the complete machine with flat panel TV is positioned in three combined test chambers, implements the low-temperature working test.The televisor complete machine is 0 ℃ ,-10 ℃ ,-20 ℃ and-32 ℃ in test temperature, and each carried out the temperature stress test in lasting 1.5 hours down;
The random vibration stress test:
H. the complete machine with flat panel TV is positioned in three combined test chambers, uses T type channel-section steel anchor clamps that complete machine is fixed on the electromagnetic vibration generator system expansion table top, implements the vibration stress test.Begin from 0.1Grms, to 0.5Grms, each test oscillation point was carried out vibration stress to the televisor complete machine in lasting 20 minutes and is tested with step value 0.1Grms step increments;
In the process of step a～h, alternately apply the alternating current stress of 10 minutes 100V/47Hz and 10 minutes 240V/63Hz to receiving trial product through the AC frequency conversion power supply.
From the consideration that reduces cost; Can be only among the step a to the detection that makes an experiment of the machine core board performance in 0 ℃ to-32 ℃ scope; To among the step b to the detection that makes an experiment of the machine core board performance in 50 ℃ to the 72 ℃ scopes; The fault that surpasses the appearance of said scope belongs to improper use or extreme case usually, can when development, not handle it.
Claims (7)
1. the method for flat panel TV fail-test is characterized by: comprise the machine core board fail-test and the whole aircraft reliability test of televisor,
The machine core board fail-test comprises:
The temperature stress test:
A. since 0 ℃, the temperature stepping is decremented to-40 ℃, and each test temperature point carried out temperature stress to machine core board in lasting 5～30 minutes to be tested;
B. since 50 ℃, the temperature stepping is incremented to 80 ℃, and each test temperature point carried out temperature stress to machine core board in lasting 5～30 minutes to be tested;
C. circulate at least at two temperature spots of-30 ℃ and 80 ℃ and 5 times machine core board carried out warm variable-stress level test, warm variable Rate is 60 ℃/minute, and each temperature spot continues machine core board to be carried out the temperature stress test in 5～10 minutes;
The random vibration stress test:
D. begin from 4Grms, the vibration step increments is to 40Grms, and each test oscillation point was carried out vibration stress to machine core board in lasting 5～15 minutes and tested;
The combined stress test:
E. circulate at least at two temperature spots of-30 ℃ and 80 ℃ and 5 times machine core board carried out warm variable-stress level test, warm variable Rate is 60 ℃/minute, and each temperature spot continues machine core board to be carried out the temperature stress test in 5～10 minutes; When said two temperature spots being carried out the temperature stress test, machine core board is carried out the initial step increments vibration stress test from 6Grms, vibration is incremented to 28Grms during loop ends;
The whole aircraft reliability test comprises:
The temperature stress test:
F. televisor complete machine at least 2 test temperature points under 40 ℃～65 ℃ are carried out the temperature stress test;
G. televisor complete machine at least 4 test temperature points under 0 ℃～-32 ℃ are carried out the temperature stress test;
The random vibration stress test:
H. begin from 0.1Grms, the vibration step increments is to 0.5Grms, and each test oscillation point was carried out vibration stress to the televisor complete machine in lasting 20 minutes and tested;
In the process of step a～h, alternately apply the alternating current stress of 10 minutes 100V/47Hz and 10 minutes 240V/63Hz to receiving trial product through the AC frequency conversion power supply.
2. the method for flat panel TV fail-test as claimed in claim 1 is characterized by:
The test temperature spot is 0 ℃ ,-20 ℃ ,-32 ℃ ,-35 ℃ and-40 ℃ in chronological order among the step a, and each test temperature point continues 10 minutes;
The test temperature spot is 50 ℃, 60 ℃, 72 ℃ and 80 ℃ in chronological order among the step b, and each test temperature point continues 10 minutes;
Among the step c two temperature spots circulations of-30 ℃ and 80 ℃ 5 times;
Step value in the steps d is 4Grms, continues 10 minutes in each test oscillation point;
Two temperature spots circulations of-30 ℃ and 80 ℃ 5 times, each temperature experiment point is lasting 10 minutes in the temperature stress test among the step e; In the test of step increments vibration stress; The round-robin vibration stress is 6Grms for the first time, and the round-robin vibration stress is 12Grms for the second time, and the round-robin vibration stress is 18Grms for the third time; The 4th time the round-robin vibration stress is 24Grms, and the 5th time the round-robin vibration stress is 28Grms;
Test temperature among the step f is 55 ℃ and continues 2 hours that 65 ℃ continue 24 hours;
Test temperature in the step g is that each continues 1.5 hours 0 ℃ ,-10 ℃ ,-20 ℃ and-32 ℃;
Step h vibration stress step value is 0.1Grms.
3. the method for flat panel TV fail-test as claimed in claim 1 is characterized by: when vibration stress value >=20Grms, accomplish the vibration of the additional 4Grms magnitude in back in each test magnitude in the steps d, the sequential time is 2 minutes.
4. the method for flat panel TV fail-test as claimed in claim 1; It is characterized by: in the step increments vibration stress test among the step e; When vibration stress value >=20Grms, accomplish the vibration of the additional 4Grms magnitude in back in each test magnitude, the sequential time is 2 minutes.
5. the method for flat panel TV fail-test as claimed in claim 1 is characterized by: the performance of after each test temperature point continues 5 minutes, checking said machine core board when machine core board is in running order among the step b.
6. like the method for the described flat panel TV fail-test of one of claim 1 to 5, it is characterized by: among the step a to the detection that makes an experiment of the machine core board performance in 0 ℃ to-32 ℃ scope.
7. like the method for the described flat panel TV fail-test of one of claim 1 to 5, it is characterized by: among the step b to the detection that makes an experiment of the machine core board performance in 50 ℃ to the 72 ℃ scopes.
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| CN103837572A (en) * | 2012-11-27 | 2014-06-04 | 海洋王（东莞）照明科技有限公司 | Testing method and testing system of plastic shell with metal insert |
| CN103852672A (en) * | 2014-03-31 | 2014-06-11 | 中国航天科工运载技术研究院北京分院 | Environmental stress screening method of electronic device by using stepping stress |
| CN103884927A (en) * | 2012-12-21 | 2014-06-25 | 中国科学院金属研究所 | Microelectronic product reliability test method under force electrothermal multi-field coupling |
| CN104394406A (en) * | 2014-11-19 | 2015-03-04 | 四川长虹电器股份有限公司 | Detection system and method applicable to AC startup and shutdown test of television |
| CN104777415A (en) * | 2015-04-17 | 2015-07-15 | 重庆微标科技有限公司 | Manufacturing process of automatic train identification system host |
| CN106546834A (en) * | 2015-09-17 | 2017-03-29 | 大唐移动通信设备有限公司 | A kind of environmental stress screening test method and device |
| CN107515089A (en) * | 2017-07-26 | 2017-12-26 | 中国航空工业集团公司西安飞机设计研究所 | A kind of temperature stress efficiently excites the reliability development test method of failure |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103837572A (en) * | 2012-11-27 | 2014-06-04 | 海洋王（东莞）照明科技有限公司 | Testing method and testing system of plastic shell with metal insert |
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| CN103884927B (en) * | 2012-12-21 | 2016-05-25 | 中国科学院金属研究所 | Microelectronic product method for testing reliability under many couplings of a kind of power electric heating |
| CN103852672A (en) * | 2014-03-31 | 2014-06-11 | 中国航天科工运载技术研究院北京分院 | Environmental stress screening method of electronic device by using stepping stress |
| CN104394406A (en) * | 2014-11-19 | 2015-03-04 | 四川长虹电器股份有限公司 | Detection system and method applicable to AC startup and shutdown test of television |
| CN104777415A (en) * | 2015-04-17 | 2015-07-15 | 重庆微标科技有限公司 | Manufacturing process of automatic train identification system host |
| CN106546834A (en) * | 2015-09-17 | 2017-03-29 | 大唐移动通信设备有限公司 | A kind of environmental stress screening test method and device |
| CN106546834B (en) * | 2015-09-17 | 2019-08-09 | 大唐移动通信设备有限公司 | A kind of environmental stress screening test method and device |
| CN107515089A (en) * | 2017-07-26 | 2017-12-26 | 中国航空工业集团公司西安飞机设计研究所 | A kind of temperature stress efficiently excites the reliability development test method of failure |
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Application publication date: 20120613 |