CN104076296B - A kind of method of testing and test device of LED signal lamp luminescent screen - Google Patents
A kind of method of testing and test device of LED signal lamp luminescent screen Download PDFInfo
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- CN104076296B CN104076296B CN201310106727.3A CN201310106727A CN104076296B CN 104076296 B CN104076296 B CN 104076296B CN 201310106727 A CN201310106727 A CN 201310106727A CN 104076296 B CN104076296 B CN 104076296B
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Abstract
The invention discloses a kind of method of testing of LED signal lamp luminescent screen, it is included under the test environment of selection, the electrical parameter of test target LED signal lamp luminescent screen；The electrical parameter for testing obtained target LED signal lamp luminescent screen is compared with corresponding preset qualified electrical parameter；If matching, target LED signal lamp luminescent screen is qualified；If mismatching, target LED signal lamp luminescent screen is unqualified, and it is unqualified to mark the target LED signal lamp luminescent screen；The test environment of the selection includes at least one of normal temperature test environment, Electromagnetic Interference Test environment, high temperature test environment, low-temperature test environment, hot humid test environment and Thermal Balance Test environment.Using technical solutions according to the invention, LED signal lamp luminescent screen can be tested in advance, underproof LED signal lamp luminescent screen is found in time, defective products is filtered out in advance, the reliability that LED signal lamp luminescent screen is assembled into product after LED signal lamp can be improved.
Description
Technical field
The present invention relates to the method for testing and test dress of field of illuminating device, more particularly to a kind of LED signal lamp luminescent screen
Put.
Background technology
Signal lamp is widely used as information transmission traffic directing tool in industry, life.LED signal lamp is made using LED
The signal lamp made for light source, with low in energy consumption, saves the advantage of the energy, LED signal lamp is exactly the LED systems with different colours
The signal lamp of work；Mainly there are the different colours such as red, yellow, blue, green, different color transfers different information.LED signal lamp
Core is the LED signal lamp luminescent screen in lamp, and LED signal lamp luminescent screen is a kind of to integrate the small-sized integrated of control and light source
Circuit board, its light source can be made up of the LED of identical or different glow colors, integrated IC controls, the permanent light of control signal lamp output
Or flash state, accurately visual information is passed out, makes observer very clear, related action or action is performed.
Observer can be made high-visible, luminescent screen is as the important component of LED signal lamp, and its quality is very as a kind of instruction
The quality of a signal lamp is determined in big degree.
At present, LED signal lamp is typically directly assembled into after LED signal lamp luminescent screen supplied materials, without in advance to LED signal lamp
Luminescent screen is tested, cause latent defect that design or manufacturing process due to LED signal lamp luminescent screen bring not by
Find in time, underproof LED signal lamp can badly influence the use of signal lamp, reduce the signal lamp life-span.
The content of the invention
The technical problems to be solved by the invention are that there is provided a kind of method of testing of LED signal lamp luminescent screen and test
Device, can be tested LED signal lamp luminescent screen and LED signal lamp luminescent screen is screened.
In order to solve the above-mentioned technical problem, The embodiment provides a kind of test side of LED signal lamp luminescent screen
Method, the method for testing includes：
Under the test environment of selection, the electrical parameter of test target LED signal lamp luminescent screen；
The electrical parameter for testing obtained target LED signal lamp luminescent screen is compared with corresponding preset qualified electrical parameter
Compared with；If matching, the target LED signal lamp luminescent screen is qualified；If mismatching, the target LED signal lamp luminescent screen does not conform to
Lattice, and it is unqualified to mark the target LED signal lamp luminescent screen；
The test environment of the selection includes normal temperature test environment, Electromagnetic Interference Test environment, high temperature test environment, low temperature
At least one of test environment, hot humid test environment and Thermal Balance Test environment test environment.
Wherein, when the test environment of the selection is normal temperature test environment, the method for testing includes：To at least two panels
Target LED signal lamp luminescent screen is tested,
It is luminous to target LED signal lamp with direct-flow voltage regulation source in the operating voltage range of target LED signal lamp luminescent screen
Whether plate is powered, measure the magnitude of voltage of target LED signal lamp luminescent screen, judge it in default range of voltage values；
Measure parameter of the target LED signal lamp luminescent screen in permanent light state and flash state；
When target LED signal lamp luminescent screen is operated in permanent light state, if target LED signal lamp luminescent screen stable luminescence
Flicker free is then qualified, otherwise to be unqualified；
When target LED signal lamp luminescent screen is operated in flicker state, each target LED signal lamp luminescent screen flicker frequency one
Cause to be then qualified, otherwise to be unqualified；
Under rated voltage, by the output terminal shortcircuit of target LED signal lamp luminescent screen, current value during measurement short circuit；Such as
Current value during fruit short circuit is less than or equal to running current, then without long-term short circuit；
If electric current during short circuit is more than running current, luminous to target LED signal lamp within the default time
Plate carries out short-circuit processing, and test target LED signal lamp luminescent screen has without exception when short-circuit；Also include, reach after the default time,
Remove short circuit and reconnect load, target LED signal lamp luminescent screen input rated voltage value checks that target LED signal lamp lights
Plate it is luminous whether normal；
The method of testing also includes, and whether the optical parameter of the LED on measurement target LED signal lamp luminescent screen is normal, institute
Stating optical parameter includes any one or more in luminous flux, light emitting anger, chromaticity coordinates, colour temperature, colour rendering index and light efficiency.
Wherein, when the test environment of the selection is Electromagnetic Interference Test environment, the method for testing includes：
Target LED signal lamp luminescent screen is loaded in supporting lampshade, it is default in distance objective LED signal lamp luminescent screen
Apart from interior opening electromagnetic interference equipment, make target LED signal lamp luminescent screen in default frequency range within the default time
Be operated, test target LED signal lamp luminescent screen under permanent light state and flicker state, LED send it is just no have it is dimmed,
Extinguish, flicker frequency is accelerated or the slack-off phenomenon of flicker frequency, if there is any one above-mentioned phenomenon then target LED signal
Lamp luminescent screen is unqualified.
Wherein, when the test environment of the selection is high temperature test environment, the method for testing includes：
The signal lamp that target LED signal lamp luminescent screen and target LED signal lamp luminescent screen are installed after lampshade is entered respectively
Row test,
Using incubator, set the temperature of incubator to allow operating temperature value for target LED signal lamp luminescent screen highest, respectively will
The signal lamp that target LED signal lamp luminescent screen and target LED signal lamp luminescent screen are installed after lampshade is put into incubator, continues work
Make after a period of time, detect respectively under permanent light state and flicker state target LED signal lamp luminescent screen and signal lamp whether work
Make normal, if light is shaken during permanent light state, occur that flicker frequency accelerates or flicker frequency is slack-off during flicker state,
Then target LED signal lamp luminescent screen is unqualified.
Wherein, when the test environment of the selection is low-temperature test environment, the method for testing includes：
The signal lamp that target LED signal lamp luminescent screen and target LED signal lamp luminescent screen are installed after lampshade is entered respectively
Row test,
Using incubator, the temperature for setting incubator is the minimum permission operating temperature value of target LED signal lamp luminescent screen, respectively will
The signal lamp that target LED signal lamp luminescent screen and target LED signal lamp luminescent screen are installed after lampshade is put into incubator, continues work
Make after a period of time, detect respectively under permanent light state and flicker state target LED signal lamp luminescent screen and signal lamp whether work
Make normal, if light is shaken during permanent light state, occur that flicker frequency accelerates or flicker frequency is slack-off during flicker state,
Then target LED signal lamp luminescent screen is unqualified.
Wherein, when the test environment of the selection is hot humid test environment, the method for testing includes：
The signal lamp that target LED signal lamp luminescent screen and target LED signal lamp luminescent screen are installed after lampshade is entered respectively
Row test,
Using incubator, set the temperature of incubator to allow operating temperature value for target LED signal lamp luminescent screen highest, temperature is set
Humidity in case is default value, and target LED signal lamp luminescent screen and target LED signal lamp luminescent screen are installed into lampshade respectively
Signal lamp afterwards is put into incubator, continuous firing for a period of time after, the target LED under permanent light state and flicker state is detected respectively
Whether signal lamp luminescent screen and signal lamp are working properly, if light is shaken during permanent light state, are dodged during flicker state
Bright frequency accelerates or flicker frequency is slack-off, then target LED signal lamp luminescent screen is unqualified.
Wherein, when the test environment of the selection is Thermal Balance Test environment, the method for testing includes：
Measurement target LED signal lamp luminescent screen is installed target LED signal lamp after the scheduled time that worked after lampshade and lighted respectively
The temperature of plate internal heat generation device, if it exceeds then target LED signal lamp luminescent screen is unqualified to the rated temperature of heater members.
Wherein, described under the test environment of selection, whether the board test electrical parameter that lighted to target LED signal lamp is qualified
Also include before：
Preliminary survey is carried out to LED signal lamp luminescent screen to be measured, the qualified LED signal lamp luminescent screen of preliminary survey is labeled as target
LED signal lamp luminescent screen；
The preliminary survey includes：Whether the size that checks LED signal lamp luminescent screen to be measured is qualified, check component title and pole
Property identify whether it is qualified, check component welding it is whether qualified, the LED signal lamp luminescent screen that preliminary survey passes through be target LED
Signal lamp luminescent screen.
On the other hand, embodiments of the invention additionally provide a kind of test device of LED signal lamp luminescent screen, the test
Device includes：
Test module, under the test environment of selection, whether the electrical parameter of test target LED signal lamp luminescent screen to close
Lattice；
Comparison module, for according to the electrical parameter and corresponding prefabricated conjunction for testing obtained target LED signal lamp luminescent screen
Lattice electrical parameter is compared；If matching, the target LED signal lamp luminescent screen is qualified；If mismatching, the target LED letters
Signal lamp luminescent screen is unqualified, and it is unqualified to mark the target LED signal lamp luminescent screen；
Mark module, for comparison module to be defined as into underproof target LED signal lamp luminescent screen labeled as unqualified；
The test environment selected described in the test module includes normal temperature test environment, Electromagnetic Interference Test environment, height
At least one of warm test environment, low-temperature test environment, hot humid test environment and Thermal Balance Test environment test wrapper
Border.
Wherein, the test module also includes preliminary survey module, and the preliminary survey module is used to enter LED signal lamp luminescent screen to be measured
Row preliminary survey, target LED signal lamp luminescent screen is labeled as by the qualified LED signal lamp luminescent screen of preliminary survey；
Wherein, preliminary survey includes checking whether the size of LED signal lamp luminescent screen to be measured is qualified, checks component title and pole
Property identify whether it is qualified, check component welding it is whether qualified.
Using technical solutions according to the invention, LED signal lamp luminescent screen can be tested in advance so that unqualified
LED signal lamp luminescent screen can be found in time, defective products is filtered out in advance, can improve LED signal lamp luminescent screen assembling
The reliability of product after into LED signal lamp.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is a kind of flow chart of the method for testing of LED signal lamp luminescent screen of the embodiment of the present invention；
Fig. 2 is the flow chart of the method for testing of another LED signal lamp luminescent screen of the embodiment of the present invention；
Fig. 3 is a kind of structural representation of the test device of LED signal lamp luminescent screen of the embodiment of the present invention；
Fig. 4 is the structural representation of the test device of another LED signal lamp luminescent screen of the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Below with reference to the accompanying drawings embodiments of the invention are described.
Embodiment one
Fig. 1 is referred to, is a kind of flow chart of the method for testing of LED signal lamp luminescent screen of the invention.The method of testing bag
Include：
S101：Under the test environment of selection, the electrical parameter of test target LED signal lamp luminescent screen；
S102:The electrical parameter for testing obtained target LED signal lamp luminescent screen is entered with corresponding preset qualified electrical parameter
Row compares；
S103：If matching, the target LED signal lamp luminescent screen is qualified；If mismatching, the target LED signal lamp
Luminescent screen is unqualified, and it is unqualified to mark the target LED signal lamp luminescent screen.
Wherein, the test environment of the selection includes normal temperature test environment, Electromagnetic Interference Test environment, high temperature side test ring
At least one of border, low-temperature test environment, hot humid test environment and Thermal Balance Test environment test environment.
Specifically, when the test environment of the selection is normal temperature test environment, the test side of the embodiment of the present invention
Method is specifically included：
20 LED signal lamp luminescent screens are taken to be tested as target LED signal lamp luminescent screen,
It is luminous to target LED signal lamp with direct-flow voltage regulation source in the operating voltage range of target LED signal lamp luminescent screen
Whether plate is powered, measure the magnitude of voltage of target LED signal lamp luminescent screen, judge it in default range of voltage values；Point
Gei not the input of target LED signal lamp luminescent screen three typical magnitude of voltage 3V, 3.4V and 2.6V（The rated voltage of correspondence dry cell
3V, full piezoelectric voltage 3.4V and low-voltage 2.6V）
Measure parameter of the target LED signal lamp luminescent screen in permanent light state and flash state；
When target LED signal lamp luminescent screen is operated in permanent light state, if target LED signal lamp luminescent screen stable luminescence
Flicker free is then qualified, otherwise to be unqualified；
When target LED signal lamp luminescent screen is operated in flicker state, each target LED signal lamp luminescent screen flicker frequency one
Cause to be then qualified, otherwise to be unqualified；
When rated voltage 3V is inputted, by the output terminal shortcircuit of target LED signal lamp luminescent screen, electric current during measurement short circuit
Value；If current value during short circuit is less than or equal to running current, without long-term short circuit；
If electric current during short circuit is more than running current, 2 hours short to the progress of target LED signal lamp luminescent screen
Road is handled, and test target LED signal lamp luminescent screen has without exception when short-circuit；Also include, reach after 2 hours, remove short circuit again
Connection load, target LED signal lamp luminescent screen input rated voltage value 3V checks that the luminous of target LED signal lamp luminescent screen is
It is no normal, specifically checking whether qualified under permanent light state and flash state.
The method of testing also includes, and whether the optical parameter of the LED on measurement target LED signal lamp luminescent screen is normal, institute
Stating optical parameter includes any one or more in luminous flux, light emitting anger, chromaticity coordinates, colour temperature, colour rendering index and light efficiency.It is such as red
The LED of color x chromaticity coordinates value 0.660~0.735, y-coordinate value 0.320~0.265, light emitting anger be 15 degree when be normal
, otherwise to be abnormal.The mismatch mentioned in the present embodiment can refer to that a parameter is not considered as not in normal range (NR)
Match somebody with somebody or multiple parameters are not just considered to mismatch in normal range (NR), such as it is considered that wherein at least there are 2 parameters not
Just it is considered to mismatch in normal range (NR).
Further, when the selection test environment be Electromagnetic Interference Test environment when, the embodiment of the present invention it is described
Method of testing is specifically included：
Target LED signal lamp luminescent screen is loaded in supporting lampshade, in 10 centimetres of distance objective LED signal lamp luminescent screen
Distance at open intercom（Frequency range is in 142MHz~470MHz）Peak power is opened, with different frequencies in distance
The centimeters of target LED signal lamp luminescent screen 10 carry out disturbed one minute from different directions, and test target LED signal lamp luminescent screen exists
Under permanent light state and flicker state, LED send it is just no have it is dimmed, extinguish, flicker frequency accelerate or flicker frequency it is slack-off
Phenomenon, if there is any one above-mentioned phenomenon then target LED signal lamp luminescent screen to be unqualified.
When the test environment of the selection is high temperature test environment, the method for testing includes：
The signal lamp that target LED signal lamp luminescent screen and target LED signal lamp luminescent screen are installed after lampshade is entered respectively
Row test,
Using incubator, the temperature of incubator is set to allow operating temperature value 40 Celsius for target LED signal lamp luminescent screen highest
Degree, the signal lamp for respectively installing target LED signal lamp luminescent screen and target LED signal lamp luminescent screen after lampshade is put into incubator
In, continuous firing detects target LED signal lamp luminescent screen and signal lamp under permanent light state and flicker state respectively after 2 hours
It is whether working properly, if light is shaken during permanent light state, occur flicker frequency during flicker state and accelerate or flash frequently
Whether rate is slack-off, then target LED signal lamp luminescent screen is unqualified, then recovers to normal temperature, check light intensity value in normal model
In enclosing, such as the light intensity of feux rouges is greater than 7cd, and the light intensity of gold-tinted is greater than 5.5cd and met the requirements, if not in the scope of permission
Interior, then target LED signal lamp luminescent screen is unqualified.
Further, when the test environment of the selection is low-temperature test environment, the method for testing includes：
The signal lamp that target LED signal lamp luminescent screen and target LED signal lamp luminescent screen are installed after lampshade is entered respectively
Row test,
Using incubator, the temperature of incubator is set to allow operating temperature value -20 Celsius for target LED signal lamp luminescent screen is minimum
Degree, the signal lamp for respectively installing target LED signal lamp luminescent screen and target LED signal lamp luminescent screen after lampshade is put into incubator
In, continuous firing detects target LED signal lamp luminescent screen and signal lamp under permanent light state and flicker state respectively after 2 hours
It is whether working properly, if light is shaken during permanent light state, occur flicker frequency during flicker state and accelerate or flash frequently
Rate is slack-off, then target LED signal lamp luminescent screen is unqualified.
Further, when the test environment of the selection is hot humid test environment, the method for testing includes：
The signal lamp that target LED signal lamp luminescent screen and target LED signal lamp luminescent screen are installed after lampshade is entered respectively
Row test,
Using incubator, the temperature of incubator is set to allow operating temperature value 40 Celsius for target LED signal lamp luminescent screen highest
Degree, it is default value 93% to set the humidity in incubator, respectively sends out target LED signal lamp luminescent screen and target LED signal lamp
The signal lamp that tabula rasa installs after lampshade is put into incubator, is persistently placed 48 hours, wherein the 2 hours target LED signal lamps started
Luminescent screen and signal lamp are in running order, close be in off working state afterwards, continue to first 2 hours of end, then make at it
In working condition, detect whether target LED signal lamp luminescent screen and signal lamp work under permanent light state and flicker state respectively
Normally, if light is shaken during permanent light state, occur that flicker frequency accelerates or flicker frequency is slack-off during flicker state, then
Target LED signal lamp luminescent screen is unqualified, is then recovered to normal temperature, checks light intensity value whether in normal scope, if
Not in normal scope, then target LED signal lamp luminescent screen is unqualified.
Further, when the test environment of the selection is Thermal Balance Test environment, the method for testing includes：
Measurement target LED signal lamp luminescent screen is installed target LED signal lamp after the scheduled time that worked after lampshade and lighted respectively
The temperature of plate internal heat generation device, if it exceeds then target LED signal lamp luminescent screen is unqualified to the rated temperature of heater members.
Using the technical scheme described in the present embodiment, LED signal lamp luminescent screen can be tested in advance so that do not conform to
The LED signal lamp luminescent screen of lattice can be found in time, and defective products is filtered out in advance, can improve LED signal lamp luminescent screen dress
It is made into the reliability of product after LED signal lamp.
Embodiment two
Fig. 2 is referred to, the embodiment is a kind of another flow chart of the method for testing of LED signal lamp luminescent screen of the invention.
The methods described of the embodiment of the present invention includes：
S200：Preliminary survey is carried out to LED signal lamp luminescent screen to be measured, the qualified LED signal lamp luminescent screen of preliminary survey is labeled as
Target LED signal lamp luminescent screen；
The preliminary survey includes：Whether the size that checks LED signal lamp luminescent screen to be measured is qualified, check component title and pole
Property identify whether it is qualified, check component welding it is whether qualified, the LED signal lamp luminescent screen that preliminary survey passes through be target LED
Signal lamp luminescent screen.
S201：Under the test environment of selection, the electrical parameter of test target LED signal lamp luminescent screen；
S202:The electrical parameter for testing obtained target LED signal lamp luminescent screen is entered with corresponding preset qualified electrical parameter
Row compares；
S203：If matching, the target LED signal lamp luminescent screen is qualified；If mismatching, the target LED signal lamp
Luminescent screen is unqualified, and it is unqualified to mark the target LED signal lamp luminescent screen.
S201, S202 and S203 therein specific implementation are identical with S101, S102 and S103 in embodiment one,
It will not be described here.
Using the technical scheme described in the present embodiment, LED signal lamp luminescent screen can be tested in advance so that do not conform to
The LED signal lamp luminescent screen of lattice can be found in time, and defective products is filtered out in advance, can improve LED signal lamp luminescent screen dress
It is made into the reliability of product after LED signal lamp.
Embodiment three
Fig. 3 is referred to, is a structural representation of the test device of LED signal lamp luminescent screen, the test device bag
The test module 11 being sequentially connected, comparison module 12 and labeling module 13 are included, wherein,
Test module 11, under the test environment of selection, whether the electrical parameter of test target LED signal lamp luminescent screen
It is qualified；
Comparison module 12, for the electrical parameter of target LED signal lamp luminescent screen that is obtained according to test with it is corresponding prefabricated
Qualified electrical parameter is compared；If matching, the target LED signal lamp luminescent screen is qualified；If mismatching, the target LED
Signal lamp luminescent screen is unqualified, and it is unqualified to mark the target LED signal lamp luminescent screen；
Mark module 13, is labeled as not conforming to for comparison module to be defined as into underproof target LED signal lamp luminescent screen
Lattice；
The test environment selected described in the test module 11 include normal temperature test environment, Electromagnetic Interference Test environment,
At least one of high temperature test environment, low-temperature test environment, hot humid test environment and Thermal Balance Test environment are tested
Environment.
Using the technical scheme described in the present embodiment, LED signal lamp luminescent screen can be tested in advance so that do not conform to
The LED signal lamp luminescent screen of lattice can be found in time, and defective products is filtered out in advance, can improve LED signal lamp luminescent screen dress
It is made into the reliability of product after LED signal lamp.
Example IV
Fig. 4 is referred to, is another structural representation of the test device of LED signal lamp luminescent screen, the embodiment of the present invention
The test device of the LED signal lamp luminescent screen includes test module 11, comparison module 12 and mark in above-described embodiment three
Remember module 13, a preliminary survey module 14 being connected with test module 11 is also included in embodiments of the present invention.
The preliminary survey module 14 is used to carry out preliminary survey to LED signal lamp luminescent screen to be measured, and the qualified LED signal lamp of preliminary survey is sent out
Tabula rasa is labeled as target LED signal lamp luminescent screen.
Wherein, preliminary survey includes checking whether the size of LED signal lamp luminescent screen to be measured is qualified, checks component title and pole
Property identify whether it is qualified, check component welding it is whether qualified.
Using the technical scheme described in the present embodiment, LED signal lamp luminescent screen can be tested in advance so that do not conform to
The LED signal lamp luminescent screen of lattice can be found in time, and defective products is filtered out in advance, can improve LED signal lamp luminescent screen dress
It is made into the reliability of product after LED signal lamp.
Embodiments described above, does not constitute the restriction to the technical scheme protection domain.It is any in above-mentioned implementation
Modifications, equivalent substitutions and improvements made within the spirit and principle of mode etc., should be included in the protection model of the technical scheme
Within enclosing.
Claims (9)
1. a kind of method of testing of LED signal lamp luminescent screen, it is characterised in that the method for testing includes：
Under the test environment of selection, the electrical parameter of test target LED signal lamp luminescent screen；
The electrical parameter for testing obtained target LED signal lamp luminescent screen is compared with corresponding preset qualified electrical parameter；
If matching, the target LED signal lamp luminescent screen is qualified；If mismatching, the target LED signal lamp luminescent screen does not conform to
Lattice, and it is unqualified to mark the target LED signal lamp luminescent screen；
The test environment of the selection includes normal temperature test environment, Electromagnetic Interference Test environment, high temperature test environment, low-temperature test
At least one of environment, hot humid test environment and Thermal Balance Test environment test environment；
Specifically, when the test environment of the selection is normal temperature test environment, the method for testing includes：
At least two panels target LED signal lamp luminescent screen is tested,
In the operating voltage range of target LED signal lamp luminescent screen, entered with direct-flow voltage regulation source to target LED signal lamp luminescent screen
Whether row power supply, measure the magnitude of voltage of target LED signal lamp luminescent screen, judge it in default range of voltage values；
Measure parameter of the target LED signal lamp luminescent screen in permanent light state and flash state；
When target LED signal lamp luminescent screen is operated in permanent light state, if target LED signal lamp luminescent screen stable luminescence is without sudden strain of a muscle
It is bright then to be qualified, otherwise to be unqualified；
When target LED signal lamp luminescent screen is operated in flicker state, each target LED signal lamp luminescent screen flicker frequency is consistent then
To be qualified, otherwise to be unqualified；
Under rated voltage, by the output terminal shortcircuit of target LED signal lamp luminescent screen, current value during measurement short circuit；If short
Current value during road is less than or equal to running current, then without long-term short circuit；
If electric current during short circuit is more than running current, target LED signal lamp luminescent screen is entered within the default time
Row short circuit processing, test target LED signal lamp luminescent screen has without exception when short-circuit；Also include, reach after the default time, remove
Short circuit reconnects load, and target LED signal lamp luminescent screen input rated voltage value checks target LED signal lamp luminescent screen
It is luminous whether normal；
In normal temperature test environment, the method for testing also includes, the beche-de-mer without spike of the LED on measurement target LED signal lamp luminescent screen
Whether number is normal, and the optical parameter includes any one in luminous flux, light emitting anger, chromaticity coordinates, colour temperature, colour rendering index and light efficiency
Or it is a variety of.
2. the method for testing of LED signal lamp luminescent screen according to claim 1, it is characterised in that
When the test environment of the selection is Electromagnetic Interference Test environment, the method for testing includes：
Target LED signal lamp luminescent screen is loaded in supporting lampshade, in the default distance of distance objective LED signal lamp luminescent screen
Interior opening electromagnetic interference equipment, makes target LED signal lamp luminescent screen be carried out in default frequency range within the default time
Work, test target LED signal lamp luminescent screen under permanent light state and flicker state, LED send it is just no have it is dimmed, put out
Go out, flicker frequency is accelerated or the slack-off phenomenon of flicker frequency, if there is any one above-mentioned phenomenon then target LED signal lamp
Luminescent screen is unqualified.
3. the method for testing of LED signal lamp luminescent screen according to claim 2, it is characterised in that
When the test environment of the selection is high temperature test environment, the method for testing includes：
The signal lamp that target LED signal lamp luminescent screen and target LED signal lamp luminescent screen are installed after lampshade is surveyed respectively
Examination,
Using incubator, the temperature of incubator is set to allow operating temperature value for target LED signal lamp luminescent screen highest, respectively by target
The signal lamp that LED signal lamp luminescent screen and target LED signal lamp luminescent screen are installed after lampshade is put into incubator, continuous firing one
After the section time, detect whether target LED signal lamp luminescent screen and signal lamp work just under permanent light state and flicker state respectively
Often, if light is shaken during permanent light state, occur that flicker frequency accelerates or flicker frequency is slack-off during flicker state, then mesh
It is unqualified to mark LED signal lamp luminescent screen.
4. the method for testing of LED signal lamp luminescent screen according to claim 3, it is characterised in that
When the test environment of the selection is low-temperature test environment, the method for testing includes：
The signal lamp that target LED signal lamp luminescent screen and target LED signal lamp luminescent screen are installed after lampshade is surveyed respectively
Examination,
Using incubator, the temperature for setting incubator is the minimum permission operating temperature value of target LED signal lamp luminescent screen, respectively by target
The signal lamp that LED signal lamp luminescent screen and target LED signal lamp luminescent screen are installed after lampshade is put into incubator, continuous firing one
After the section time, detect whether target LED signal lamp luminescent screen and signal lamp work just under permanent light state and flicker state respectively
Often, if light is shaken during permanent light state, occur that flicker frequency accelerates or flicker frequency is slack-off during flicker state, then mesh
It is unqualified to mark LED signal lamp luminescent screen.
5. the method for testing of LED signal lamp luminescent screen according to claim 4, it is characterised in that
When the test environment of the selection is hot humid test environment, the method for testing includes：
The signal lamp that target LED signal lamp luminescent screen and target LED signal lamp luminescent screen are installed after lampshade is surveyed respectively
Examination,
Using incubator, set the temperature of incubator to allow operating temperature value for target LED signal lamp luminescent screen highest, set in incubator
Humidity be default value, respectively by target LED signal lamp luminescent screen and target LED signal lamp luminescent screen installation lampshade after
Signal lamp is put into incubator, continuous firing for a period of time after, the target LED signal under permanent light state and flicker state is detected respectively
Whether lamp luminescent screen and signal lamp are working properly, if light is shaken during permanent light state, occur flicker frequency during flicker state
Rate accelerates or flicker frequency is slack-off, then target LED signal lamp luminescent screen is unqualified.
6. the method for testing of LED signal lamp luminescent screen according to claim 5, it is characterised in that
When the test environment of the selection is Thermal Balance Test environment, the method for testing includes：
Measurement target LED signal lamp luminescent screen is installed after the scheduled time that worked after lampshade in target LED signal lamp luminescent screen respectively
The temperature of heater members, if it exceeds then target LED signal lamp luminescent screen is unqualified to the rated temperature of heater members.
7. the method for testing of the LED signal lamp luminescent screen according to claim 1 to 6 any one, it is characterised in that
Described under the test environment of selection, also include before the board test electrical parameter that lighted to target LED signal lamp：
Preliminary survey is carried out to LED signal lamp luminescent screen to be measured, the qualified LED signal lamp luminescent screen of preliminary survey is believed labeled as target LED
Signal lamp luminescent screen；
The preliminary survey includes：Whether the size that checks LED signal lamp luminescent screen to be measured is qualified, check component title and polarity
It is qualified to identify whether, checks whether the welding of component is qualified, and the LED signal lamp luminescent screen that preliminary survey passes through is target LED signal
Lamp luminescent screen.
8. a kind of test device of LED signal lamp luminescent screen, it is characterised in that
The test device includes：
Test module, under the test environment of selection, whether the electrical parameter of test target LED signal lamp luminescent screen to be qualified；
Comparison module, for the electrical parameter and corresponding prefabricated qualified electricity of the target LED signal lamp luminescent screen obtained according to test
Parameter is compared；If matching, the target LED signal lamp luminescent screen is qualified；If mismatching, the target LED signal lamp
Luminescent screen is unqualified, and it is unqualified to mark the target LED signal lamp luminescent screen；
Mark module, for comparison module to be defined as into underproof target LED signal lamp luminescent screen labeled as unqualified；
The test environment selected described in the test module includes normal temperature test environment, Electromagnetic Interference Test environment, high temperature side
At least one of test ring border, low-temperature test environment, hot humid test environment and Thermal Balance Test environment test environment,
Specifically,
When the test environment of the selection is normal temperature test environment,
The test module, for testing at least two panels target LED signal lamp luminescent screen, in target LED signal lamp hair
In the operating voltage range of tabula rasa, it is powered with direct-flow voltage regulation source to target LED signal lamp luminescent screen, measurement target LED letters
The magnitude of voltage of signal lamp luminescent screen；And parameter of the measurement target LED signal lamp luminescent screen in permanent light state and flash state；With
And, in luminous flux, light emitting anger, chromaticity coordinates, colour temperature, colour rendering index and the light efficiency of the LED on measurement target LED signal lamp luminescent screen
Whether any one or more normal.
9. the test device of LED signal lamp luminescent screen according to claim 8, it is characterised in that the test device is also
Including：
Preliminary survey module, the preliminary survey module is used to carry out preliminary survey to LED signal lamp luminescent screen to be measured, by the qualified LED signal of preliminary survey
Lamp luminescent screen is labeled as target LED signal lamp luminescent screen；
Wherein, preliminary survey includes checking the whether qualified size of LED signal lamp luminescent screen to be measured, inspection component title and polarity
It is qualified to identify whether, checks whether the welding of component is qualified.
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| CN104316295B (en) * | 2014-11-03 | 2018-04-20 | 广东威创视讯科技股份有限公司 | The photoelectric test method and device of a kind of LED component |
| US9584704B2 (en) * | 2015-01-08 | 2017-02-28 | Gean Technology Co. Limited | Method for detecting electronic lighting flickering |
| CN105607013A (en) * | 2015-12-20 | 2016-05-25 | 合肥艾斯克光电科技有限责任公司 | Method for testing LED signal lamp |
| CN107390143B (en) * | 2017-07-27 | 2021-03-05 | 安吉天剑电器科技有限公司 | Energy-saving lamp use state detection device and detection method |
| CN109507613A (en) * | 2018-10-22 | 2019-03-22 | 惠州市华阳光电技术有限公司 | A kind of test method of Intelligent lamp |
| CN109633488B (en) * | 2018-11-21 | 2020-12-18 | 一汽-大众汽车有限公司 | Lamp testing system and lamp testing method |
| CN111781454B (en) * | 2020-07-09 | 2022-11-22 | 江苏恒百利照明科技有限公司 | A moisture resistance comprehensive testing device for LED dampproofing lamp |
| CN111854939B (en) * | 2020-07-24 | 2023-02-03 | 深圳市明学光电股份有限公司 | Online detection method for LED flexible light bar |
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