CN104902270A - TV performance test apparatus and test method thereof - Google Patents

TV performance test apparatus and test method thereof Download PDF

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Publication number
CN104902270A
CN104902270A CN201510216091.7A CN201510216091A CN104902270A CN 104902270 A CN104902270 A CN 104902270A CN 201510216091 A CN201510216091 A CN 201510216091A CN 104902270 A CN104902270 A CN 104902270A
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test
interconnecting device
tested
working plate
performance
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CN201510216091.7A
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CN104902270B (en
Inventor
杜容彬
刘军
张雷
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Goertek Inc
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Goertek Inc
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Abstract

The invention provides a TV performance test apparatus and a test method thereof. The test method comprises the following steps: connecting all test wires on a TV to be tested with a first test port of a switching box, clamping the switching box on a guide rail and a tool plate, and enabling the switching box to flow on a streamline along with the tool plate carrying the TV to be tested; and when the tool plate flows to a test station, the tool plate being stopped by a blocking cylinder, and the switching box sliding to a switching box positioning area along the guide rail; when a sensor senses the switching box, a wire plugging module extending out, and clamping and fixing the switching box through a clamping device and a positioning device; and the wire plugging module connecting a test wire of the wire plugging module to a second test port of the switching box and starting automatic testing, after the testing ends, the wire plugging module automatically unplugging the test wire of the wire plugging module from the second test port of the switching box, and the tool plate continuously flowing. According to the invention, the product test efficiency can be improved, the production cost is decreased for enterprises, and at the same time, the labor intensity is mitigated for employees.

Description

TV performance testing device and method of testing thereof
Technical field
The present invention relates to the technical field of performance test of electronic product, more specifically, relate to a kind of TV performance testing device and method of testing thereof.
Background technology
In order to ensure the stable performance in use of TV product, usually need to test, to ensure the quality of the product of production, simultaneously for enterprise avoids risk the properties of the TV product produced in TV production field.
The test of TV overall performance generally includes: wired test, HDMI test, ATV/DTV test, AV test, component test, efficiency test etc.Fig. 1 shows existing TV overall performance method of testing flow process.
As shown in Figure 1, existing TV overall performance method of testing comprises:
S110: the working plate carrying TV turns to wired test station the transmission of connecting gear is dirty;
S120: when the working plate circulation carrying TV is to wired test station, stops that cylinder lifts, stop working plate to continue circulation, meanwhile, the network interface that netting twine is inserted into TV by tester A starts to carry out wired test;
S130: after wired test completes, netting twine is extracted by tester A, then presses control button, carries the working plate circulation of TV to next test station (being such as HDMI test station);
S140: when the working plate carrying TV circulates to HDMI test station, stop that cylinder lifts, stop working plate to continue circulation, meanwhile, p-wire is inserted on HDMI mouth and starts to carry out HDMI test by tester B;
S150: after HDMI has tested, p-wire is extracted by tester B, then presses control button, carries the working plate circulation of TV to next test station.
Above-mentioned flow process only lists two tests in the test of TV overall performance, but the test of the overall performance of TV also comprises ATV/DTV, component test, video, audio frequency, radio frequency, the performance test such as coaxial, wherein each performance test all needs to carry out with reference to the step of above-mentioned S120, S130 or S140, S150, until all performance tests are complete.
For manufacturing industry, the most valuable wealth is exactly manpower, and can be found out by the flow process shown in Fig. 1, a corresponding performance test of test station, but when the overall performance utilizing existing method of testing to TV is tested, the quantity of test station is identical with the quantity of tester, namely several test station is had just to need several testers, the automaticity of test is lower, and human input is comparatively large, also can increase the manufacturing cost of enterprise accordingly.
Summary of the invention
In view of the above problems, the object of this invention is to provide a kind of TV performance testing device and method of testing thereof, think that the automatic test of TV product lays the foundation, increase work efficiency, reduce production cost, reduce labor intensity for employee.
TV performance testing device provided by the invention, comprise the working plate, interconnecting device, the guide rail parallel with connecting gear and the interconnecting device positioning area that is arranged in each test station that carry TV to be tested, wherein, the first sliver and the second sliver is provided with bottom interconnecting device, first sliver is stuck on guide rail, second sliver is stuck on working plate, TV to be tested is connected with the first test port of interconnecting device by the p-wire on TV to be tested, by the first sliver and the second sliver, interconnecting device is flowed on streamline line body with working plate; Inductor, plug wire module, positioner and clamping device is provided with in interconnecting device positioning area, wherein, inductor is used for the interconnecting device that induced flow goes to interconnecting device positioning area, plug wire module is used for being stuck between positioner and clamping device according to the induced signal of inductor by the interconnecting device circulated to interconnecting device positioning area, positioner and clamping device are stuck in the interconnecting device between positioner and clamping device for being fixedly clamped, the p-wire of plug wire module is connected the performance of testing TV to be tested with the second test port of interconnecting device.
On the other hand, the invention provides a kind of method of TV performance test, above-mentioned TV performance testing device is utilized to test TV performance, this method of testing comprises: be connected on the first test port of interconnecting device by all p-wires on TV to be tested, by the first sliver of interconnecting device and the second sliver, interconnecting device is stuck on guide rail and working plate, flows on streamline with the working plate of carrying TV to be tested to make interconnecting device;
When carry TV to be tested working plate the drive of connecting gear is dirty go to test station time, working plate is stopped that cylinder stops, and interconnecting device slides to interconnecting device positioning area along guide rail;
When inductor senses interconnecting device, plug wire module stretches out, and is stuck between clamping device and positioner by interconnecting device, and to be fixedly clamped interconnecting device by clamping device and positioner;
The p-wire of plug wire module is connected to the second test port of interconnecting device by plug wire module, and starts test automatically, and be completed, second test port of the p-wire of plug wire module from interconnecting device is extracted by plug wire module automatically, and working plate continues circulation.
Utilize above-mentioned according to TV performance testing device of the present invention and method of testing thereof, the test mode of the traditional artificial plug line of industry can be broken, for TV Realization of Product automatic test establishes solid base, improve the testing efficiency of product, be enterprise's reduction production cost, simultaneously for employee reduces labor intensity.
In order to realize above-mentioned and relevant object, will describe in detail and the feature particularly pointed out in the claims after one or more aspect of the present invention comprises.Explanation below and accompanying drawing describe some illustrative aspects of the present invention in detail.But what these aspects indicated is only some modes that can use in the various modes of principle of the present invention.In addition, the present invention is intended to comprise all these aspects and their equivalent.
Accompanying drawing explanation
By reference to the content below in conjunction with the description of the drawings and claims, and understand more comprehensively along with to of the present invention, other object of the present invention and result will be understood and easy to understand more.In the accompanying drawings:
Fig. 1 is existing TV overall performance method of testing schematic flow sheet;
Fig. 2 is the TV performance testing device structural representation according to the embodiment of the present invention one;
Fig. 3 is the TV performance testing device structural representation according to the embodiment of the present invention two;
Fig. 4 is the structural representation of the interconnecting device positioning area according to the embodiment of the present invention;
Fig. 5 is the method flow schematic diagram of the TV performance test according to the embodiment of the present invention.
In figure, working plate 1; Interconnecting device 2; Guide rail 3; Plug wire module 41; Positioner 42; Clamping device 43; TV 5 to be tested.
Label identical in all of the figs indicates similar or corresponding feature or function.
Embodiment
Below with reference to accompanying drawing, specific embodiments of the invention are described in detail.
For aforementioned utilize existing TV performance testing device carry out TV overall performance test there is the problems such as automaticity is low, human input is large, the present invention realizes the automatic plug to p-wire by plug wire module, thus the test mode of the traditional artificial plug line of industry can be broken, for TV Realization of Product automatic test establishes solid base, improve the testing efficiency of product, be enterprise's reduction production cost, simultaneously for employee reduces labor intensity.
In order to describe TV performance testing device provided by the invention in detail, Fig. 2 and Fig. 3 respectively illustrates the TV performance testing device structure according to the embodiment of the present invention one and embodiment two.
As Fig. 2 and Fig. 3 jointly shown in, TV performance testing device provided by the invention comprises the working plate 1, interconnecting device 2, the guide rail 3 parallel with streamline line body and the interconnecting device positioning area that is arranged in each test station that carry TV to be tested.
Wherein, the first sliver and the second sliver (not shown) is provided with in the bottom of interconnecting device 2, first sliver card on guides 3, second sliver be stuck in carry TV 5 to be tested working plate 1 on, by the first sliver and the second sliver, interconnecting device is flowed on streamline line body with working plate, be connected in the first test port of interconnecting device 2 by all p-wires on TV 5 to be tested, then, interconnecting device and working plate flow with streamline line body.
Wherein, connecting gear is driven to flow on streamline line body to drive working plate 1 by motor (not shown).That is, working plate flows on streamline by being driven by motor-driven connecting gear.In addition, in order to stop the working plate flowed on streamline, TV performance testing device provided by the invention also comprises and stops cylinder (not shown), stops flowing for making working plate on streamline.
How to realize the location of interconnecting device and fixing, Fig. 4 shows the structure of the interconnecting device positioning area according to the embodiment of the present invention to illustrate in interconnecting device positioning area.As shown in Figure 4: interconnecting device positioning area comprises inductor (not shown), plug wire module 41, positioner 42 and clamping device 43, arrow shown in figure is the movement locus of plug wire module, wherein, arrow upwards represents that plug wire module 41 stretches out, and downward arrow represents that plug wire module 41 is regained.
As shown in Figures 2 to 4, when interconnecting device 2 the drive of connecting gear and working plate 1 is dirty go to interconnecting device positioning area time, by inductor induction interconnecting device 2, when inductor senses interconnecting device 2 according to induced signal, interconnecting device 2 is stuck between positioner 42 and clamping device 43 by plug wire module 41, by positioner 42 and clamping device 43 by interconnecting device 2 clamping and positioning in interconnecting device positioning area, and connect the second test port of plug wire module 41 and interconnecting device 2 to test the performance of TV 5 to be tested by the p-wire of plug wire module 41.Wherein, positioner 42 is positioning cylinder or locates electric cylinder; Clamping device 43 is for clamping cylinder or clamp electric cylinder.
It should be noted that, first test port of interconnecting device 2 comprises the performance-relevant port of network interface, HDMI1, HDMI2, HDMI3, radio frequency, video, audio frequency etc. and TV 5 to be tested, second test port of interconnecting device 2 is corresponding with the first test port of interconnecting device 2, and it also comprises the performance-relevant port of network interface, HDMI1, HDMI2, HDMI3, radio frequency, video, audio frequency etc. and electricity TV to be tested 5.The difference of the first test port and the second test port is, the first test port is connected with TV 5 to be tested, and the second test port is connected with plug wire module 41.
Can realize the automatic plug to p-wire by above-mentioned plug wire module 41, thus avoid a test station and need a tester to carry out plugging the operation of line, and then alleviate the labour intensity of personnel, be enterprise's saving manpower expenditure cost simultaneously.
In addition, the present invention also provides a kind of and utilizes above-mentioned TV performance testing device to carry out the method for TV performance test, Fig. 5 shows the method flow of the TV performance test according to the embodiment of the present invention, is described in detail to the method for TV performance test provided by the invention below in conjunction with Fig. 2 to Fig. 5.
TV performance test methods provided by the invention comprises:
S510: all p-wires on TV 5 to be tested are connected on the first test port of interconnecting device 2, by the first sliver of interconnecting device 2 and the second sliver, interconnecting device 2 is stuck on guide rail 3 and working plate 1, flows on streamline with the working plate 1 of carrying TV 5 to be tested to make interconnecting device 2.
S520: when the working plate 1 carrying TV 5 to be tested the drive of connecting gear is dirty go to test station time, working plate 1 is stoped by stop cylinder, and interconnecting device 2 can slide along guide rail 3 under the effect of inertia, and then interconnecting device 2 is slided to interconnecting device positioning area.
S530: when inductor senses interconnecting device 2, plug wire module 41 stretches out, thus interconnecting device 2 is stuck between clamping device 43 and positioner 42, clamping device 43 promotes interconnecting device 2 and moves to the direction residing for positioner, and then interconnecting device 2 is clamped be fixed on clamping device 43 and positioner 42 to be fixedly clamped interconnecting device 2.
S540: the p-wire of plug wire module is connected to the second test port of interconnecting device 2 by plug wire module 41 automatically, and start test automatically, be completed, second test port of the p-wire of plug wire module 41 from interconnecting device 2 is extracted by plug wire module 41 automatically, plug wire module 41 is regained, and working plate 1 continues to next test station circulation with the test completing another performance to TV to be tested.
After all properties of TV 5 to be tested has been tested, interconnecting device 2 is separated with the TV to be tested 5 completing test, and again interconnecting device 2 has been connected with working plate 1 and guide rail 3.
Be described with the method for an example to explanation TV performance test provided by the invention below.
1, all p-wires on TV to be tested are connected on the first test port of interconnecting device by wire rod plug wire personnel, are then placed into by interconnecting device on working plate and flow with streamline line body.
2, the working plate carrying TV to be tested circulates under the drive of connecting gear on streamline line body, when the working plate carrying TV to be tested arrives HDMI test station, line body stops that cylinder stops working plate to continue circulation, interconnecting device in the process flowed with working plate, because inertia can continue to continue to slide along guide rail.
3, when the inductor in interconnecting device positioning area senses interconnecting device, plug wire module stretches out, and now, clamping cylinder promotes interconnecting device and moves to the direction residing for positioning cylinder, thus is fixed between clamping cylinder and positioning cylinder by interconnecting device clamping.
4, after interconnecting device is fixed, the p-wire of plug wire module inserts HDMI mouth on interconnecting device automatically to test the HDMI performance of TV to be tested, after test completes, p-wire is extracted from the HDMI mouth interconnecting device by plug wire module automatically, and working plate flows to next test station (such as ATV/DTV test station).
5, when working plate arrives ATV/DTV test station, line body stops that cylinder stops working plate to continue circulation, sensed device induction when interconnecting device slides into interconnecting device positioning area, plug wire module stretches out, clamping cylinder promotes interconnecting device, thus is fixed between clamping cylinder and positioning cylinder by interconnecting device clamping.
6, after interconnecting device is fixed, the p-wire of plug wire module inserts ATV/DTV test port on interconnecting device automatically to test the ATV/DTV performance of TV to be tested, after test completes, p-wire is extracted from the ATV/DTV mouth interconnecting device by plug wire module automatically, and working plate flows to next test station.
7, the test (such as component test, coaxial test, audio-frequency test, video measurement etc.) as other performances to TV to be tested all can be tested according to above-mentioned flow process, does not repeat them here.
8, after all properties of TV to be tested is all completed, module pulls out informant person and is separated with the TV to be tested completing test by interconnecting device, is then again returned to by interconnecting device in backflow belt line and interconnecting device is flowed in module plug wire personnel hand again so that cycling.
Describe in an illustrative manner according to TV performance testing device of the present invention and method of testing thereof above with reference to accompanying drawing.But, it will be appreciated by those skilled in the art that TV performance testing device and method of testing thereof that the invention described above is proposed, various improvement can also be made on the basis not departing from content of the present invention.Therefore, protection scope of the present invention should be determined by the content of appending claims.

Claims (7)

1. a TV performance testing device, comprises the working plate carrying TV to be tested, wherein, and the interconnecting device positioning area also comprising interconnecting device, the guide rail parallel with connecting gear and be arranged in each test station, wherein,
The first sliver and the second sliver is provided with bottom described interconnecting device, described first sliver is stuck on described guide rail, described second sliver is stuck on described working plate, described TV to be tested is connected with the first test port of described interconnecting device by the p-wire of described TV to be tested, by described first sliver and the second sliver, described interconnecting device is flowed on streamline line body with described working plate;
Inductor is provided with in described interconnecting device positioning area, plug wire module, positioner and clamping device, wherein, described inductor is used for the interconnecting device that induced flow goes to described interconnecting device positioning area, described plug wire module is used for being stuck between described positioner and clamping device according to the induced signal of described inductor by the interconnecting device circulated to described interconnecting device positioning area, described positioner and described clamping device are stuck in the interconnecting device between described positioner and clamping device for being fixedly clamped, the p-wire of described plug wire module is connected the performance of testing described TV to be tested with the second test port of described interconnecting device.
2. TV performance testing device as claimed in claim 1, wherein, described working plate flows on described streamline by being driven by motor-driven connecting gear.
3. TV performance testing device as claimed in claim 1, wherein, described positioner is positioning cylinder or locates electric cylinder.
4. TV performance testing device as claimed in claim 1, wherein, described clamping device is clamping cylinder or clamps electric cylinder.
5. TV performance testing device as claimed in claim 1, also comprises stop cylinder, for stopping that described working plate flows on streamline.
6. a method for TV performance test, utilize the TV performance testing device as described in Claims 1 to 4 any one to test TV performance, described TV performance test methods comprises:
All p-wires on TV to be tested are connected on the first test port of interconnecting device, by the first sliver of described interconnecting device and the second sliver, interconnecting device is stuck on guide rail and working plate, flows on streamline with the working plate of carrying TV to be tested to make described interconnecting device;
When carry TV to be tested working plate the drive of connecting gear is dirty go to test station time, described working plate is stopped that cylinder stops, and described interconnecting device slides to interconnecting device positioning area along guide rail;
When inductor senses described interconnecting device, plug wire module stretches out, and is stuck between clamping device and positioner by described interconnecting device, and to be fixedly clamped described interconnecting device by described clamping device and positioner;
The p-wire of plug wire module is connected to the second test port of interconnecting device by described plug wire module, and start test automatically, be completed, second test port of the p-wire of plug wire module from described interconnecting device is extracted by described plug wire module automatically, and described working plate continues circulation.
7. the method for TV performance test as claimed in claim 6, wherein, after all properties of TV to be tested has been tested, has been separated described interconnecting device with the TV to be tested completing test, and has again been connected with working plate and guide rail by described interconnecting device.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106454448A (en) * 2016-10-12 2017-02-22 深圳创维-Rgb电子有限公司 Automatic plugging device of television core plate screen display line
CN109164301A (en) * 2018-10-26 2019-01-08 惠州市新泓威科技有限公司 The automatic resistance value detection device and its detection method of electronic smoke atomizer
CN109269769A (en) * 2018-10-26 2019-01-25 惠州市新泓威科技有限公司 Electronic smoke atomizer Automatic Visual Inspection device and its detection method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000037661A (en) * 1998-12-01 2000-07-05 전주범 Method for automatic test on television manufacturing line
CN1822679A (en) * 2005-12-05 2006-08-23 深圳创维-Rgb电子有限公司 Automatic detecting device and method for TV set
CN102905161A (en) * 2012-09-28 2013-01-30 福州德州电子科技有限公司 Automatic test method and system of television flow line production
CN103702108A (en) * 2013-12-13 2014-04-02 广东长虹电子有限公司 Novel core board testing framework of flat television
CN204598196U (en) * 2015-04-30 2015-08-26 歌尔声学股份有限公司 TV performance testing device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000037661A (en) * 1998-12-01 2000-07-05 전주범 Method for automatic test on television manufacturing line
CN1822679A (en) * 2005-12-05 2006-08-23 深圳创维-Rgb电子有限公司 Automatic detecting device and method for TV set
CN102905161A (en) * 2012-09-28 2013-01-30 福州德州电子科技有限公司 Automatic test method and system of television flow line production
CN103702108A (en) * 2013-12-13 2014-04-02 广东长虹电子有限公司 Novel core board testing framework of flat television
CN204598196U (en) * 2015-04-30 2015-08-26 歌尔声学股份有限公司 TV performance testing device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106454448A (en) * 2016-10-12 2017-02-22 深圳创维-Rgb电子有限公司 Automatic plugging device of television core plate screen display line
CN106454448B (en) * 2016-10-12 2019-05-21 深圳创维-Rgb电子有限公司 A kind of Core of TV set plate screen display line automatic plug-pull device
CN109164301A (en) * 2018-10-26 2019-01-08 惠州市新泓威科技有限公司 The automatic resistance value detection device and its detection method of electronic smoke atomizer
CN109269769A (en) * 2018-10-26 2019-01-25 惠州市新泓威科技有限公司 Electronic smoke atomizer Automatic Visual Inspection device and its detection method
CN109269769B (en) * 2018-10-26 2024-03-26 惠州市新泓威科技有限公司 Automatic visual detection device and detection method for electronic cigarette atomizer

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