CN107318194A - A kind of backlight module lighting system - Google Patents
A kind of backlight module lighting system Download PDFInfo
- Publication number
- CN107318194A CN107318194A CN201710581690.8A CN201710581690A CN107318194A CN 107318194 A CN107318194 A CN 107318194A CN 201710581690 A CN201710581690 A CN 201710581690A CN 107318194 A CN107318194 A CN 107318194A
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- China
- Prior art keywords
- relay
- plc
- backlight module
- circuit unit
- unit
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/105—Controlling the light source in response to determined parameters
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/16—Controlling the light source by timing means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses a kind of backlight module lighting system, including a PLC, one touch-screen, one dc source, N number of optoelectronic switch, M relay, one constant pressure source, N number of constant current output circuit unit and a photoelectric alarm circuit unit, the power end of the PLC is connected to 220V civil powers, the dc source is powered to N number of optoelectronic switch, the signal output part of N number of optoelectronic switch and the input of PLC are connected, first control terminal of each relay and the output end of PLC are connected, second control terminal of each relay is connected with dc source, the constant pressure source is connected with the stationary contact of M relay, the input of N number of constant current output circuit unit is connected with the normally opened contact of N number of relay, the photoelectric alarm circuit unit is connected with the normally opened contact of a relay with unit, wherein, M ＞ N, N ＞ 2 and, M, N round numbers, to realize that the function of washing one's hands is pointed out at fast read point lamp and interval.
Description
Technical field
The present invention relates to the backlight module technical field of measurement and test that LED is supporting, and in particular to lights the one of FPC on a production line
Plant backlight module lighting system.
Background technology
Because LED light bar has the advantages that increase light-emitting area, elimination dazzle, distillation visual effect, elimination visual fatigue, therewith
The backlight module matched has brightness high, long lifespan, it is luminous uniform the features such as, it is substantial amounts of at present to be used for liquid crystal industry, with
Continuing to develop for lcd technology, the yield of backlight module has been in the market segments that production should not have been asked, backlight module now
Production in need the lighting system in the multiple FPC that lights, current industry to be at traditional button lighting system, lighting electricity
Stream is unstable, is lost time during lighting, while the shortcomings of can not playing a part of safety in production.
The content of the invention
The technical problem to be solved in the present invention is：Existing backlight module lighting complex procedures, lighting spread of voltage, point
Lost time during lamp, while the problems such as can not playing a part of safety in production, makes corresponding lighting system, design lighting
Circuit, point lamp switch etc..
In order to solve problem above, the present invention is adopted the technical scheme that：A kind of backlight module lighting system, including one
PLC, a dc source, N number of optoelectronic switch, M relay, a constant pressure source, N number of constant current output circuit unit and one
Photoelectric alarm circuit unit, the power end of the PLC is connected to 220V civil powers, and the dc source is opened with N number of photoelectricity
The power end connection and power supply of pass, the earth terminal of N number of optoelectronic switch and the COM ends of PLC are connected, N number of light
The signal output part of electric switch and the input of PLC are connected, and first control terminal and the PLC of each relay are controlled
The output end connection of device, second control terminal of each relay is connected with dc source, the constant pressure source and M relay
Stationary contact connection, the input of N number of constant current output circuit unit is connected with the normally opened contact of N number of relay, described N number of
Constant current output circuit unit is provided as output constant current for backlight module FPC lightings, the photoelectric alarm circuit unit with
The normally opened contact of the N+1 relay is connected with unit, and the photoelectric alarm circuit unit is provided as reminding in the form of luminous
Operator washes one's hands, wherein, M ＞ N, N ＞ 2 and, M, N round numbers.
Further, the constant current output circuit unit includes first resistor unit, second resistance unit, voltage-stabiliser tube, three
Pole pipe and power interface, one end of the first resistor unit are connected with normally opened contact, the power interface of a relay, described
The other end of first resistor unit and the base stage of triode are connected, and the negative pole of the voltage-stabiliser tube and the base stage of triode are connected, institute
The colelctor electrode for stating triode is connected with power interface, and the emitter stage of the triode is connected with one end of second resistance unit, institute
State the second end of second resistance unit and the positive pole connection of voltage-stabiliser tube and be grounded.The constant pressure source distributes voltage to each constant current
Output circuit unit, controls the lighting current of constant current output circuit unit in 80 milliamperes, power interface connection backlight module FPC points
Socket, can be reduced because of the excessive burn FPC of electric current risk.
Further, including a frequency converter and a motor, the transducer drive motor rotation, the electricity of the frequency converter
Source input is connected with the normally opened contact of the N+2 relay, M ＞ N+1, M, N round numbers.Motor is used to adjust feed belt
Rotating speed.
Further, including an emergency stop switch, described emergency stop switch one end and the COM ends of PLC are connected, the urgency
The guard's valve other end and PLC go Enable Pin to connect.When emergency stop switch works, Enable Pin is gone to be used for jerk.
Compared with prior art, the beneficial effects of the invention are as follows：Require what PLC setting was lighted according to FPC lightings
Time delay, optoelectronic switch 3 is touched by hand（Photoelectric sensor）, it is delayed and lights FPC, hand touching optoelectronic switch 3, PLC controls
Output end low potential, correspondingly relay 4 turn on, constant current output circuit cell operation, export lighting current, pass through adjust electricity
Resistance, can adjust the lighting current of output, relatively conventional push switch, monolithic lighting or 1.5 seconds extinguishing saving time month.
Brief description of the drawings
Fig. 1 show the structural representation of the present invention；
Fig. 2 show a kind of physical circuit figure of the constant current output circuit unit in the present invention；
Fig. 3 show a kind of physical circuit figure of the photoelectric alarm circuit unit in the present invention.
In figure, PLC 1, dc source 2, optoelectronic switch 3, relay 4.
Embodiment
To make present disclosure clearer, below in conjunction with the accompanying drawings, the embodiment to the present invention makees further
It is described in detail.It should be noted that it is common to eliminate unrelated to the invention, this area for purposes of clarity, in accompanying drawing and explanation
The expression and description of part known to technical staff.
Embodiment 1 refers to Fig. 1, a kind of backlight module lighting system, including a PLC 1, a dc source 2, N
Individual optoelectronic switch 3, M relay 4, a constant pressure source, N number of constant current output circuit unit and a photoelectric alarm circuit unit, institute
The power end for stating PLC 1 is connected to 220V civil powers, the dc source 2 be connected with the power end of N number of optoelectronic switch 3 and
Power supply, the earth terminal of N number of optoelectronic switch 3 is connected with the COM ends of PLC 1, and the signal of N number of optoelectronic switch 3 is defeated
Go out end to be connected with the input of PLC 1, first control terminal of each relay 4 and the output end of PLC 1
Connection, second control terminal of each relay 4 is connected with dc source 2, the stationary contact of the constant pressure source and M relay 4
Point connection, the input of N number of constant current output circuit unit is connected with the normally opened contact of N number of relay 4, N number of constant current
Output circuit unit is provided as output constant current for backlight module FPC lightings, the photoelectric alarm circuit unit and one
The normally opened contact of relay 4 is connected with unit, and the photoelectric alarm circuit unit is provided as in the form of luminous reminding operator
Wash one's hands, wherein, M ＞ N, N ＞ 2 and, M, N round numbers.It is preferred that, an in addition to touch-screen, the number of touch-screen and PLC
According to end connection, touch-screen is used for the status data that PLC transmits instruction and receives each port of PLC.
In a particular application, the preferred model of PLC 1 is mitsubishi FX2N -48MT-001, shown mitsubishi FX2N -
48MT-001 possesses 48 input and output of transistor-type, magnitude control：16 ~ 256 points；The RAM memory of built-in 8K capacity, most
16K can be expanded to greatly；The μ S/ elementary instructions of CPU calculation process speed 0.08；Input and output can be connected on the right side of FX2N series to expand
Open up module and special functional module；2 axle independence highest 20kHz positioning function (transistor output types built in elementary cell）.It is described
Dc source 2 is 24V dc sources 2, can the 24V direct currents that are exported in mitsubishi FX2N -48MT-001 itself of power taking, the photoelectricity
Switch 3 uses NPN type, and preferably model is E348-D03NK, and using 18 optoelectronic switches 3, i.e. N is equal to 18,18 optoelectronic switches 3
Signal end be connected with the input (X1-X22) of model mitsubishi FX2N -48MT-001 PLC 1, the dc source 2
It is connected and powers with 18 power end of optoelectronic switch 3, the earth terminal of 18 optoelectronic switches 3 and the COM ends of PLC 1
Connection, the voltage at the COM ends of PLC 1 is 0V, the power end of model mitsubishi FX2N -48MT-001 PLC 1 by
220V mains-supplieds, in order to which in control on/off, therefore, the power end of the PLC 1 is connected to through power switch S2
220V civil powers.
The output end of model mitsubishi FX2N -48MT-001 PLC 1（Y0-Y24）Connect 21 (J1- of relay 4
J21 first control terminal), second control terminal connection 24V dc sources 2 of 21 relays 4, the constant pressure source
It is preferred that model is KXN-6005D0-60V5A models, constant pressure 60V, provided with 21 interfaces, connects the stationary contact of 21 relays 4,
The quantity of the constant current output circuit unit has 18, and its input is connected with the normally opened contact of 18 relays 4, and described 18
Individual constant current output circuit unit is provided as output constant current for backlight module FPC lightings, and also three relays 4 are stand-by,
The photoelectric alarm circuit unit is connected with the normally opened contact of the 19th relay 4 with unit, the photoelectric alarm circuit unit
It is provided as reminding operator to wash one's hands in the form of luminous；It is left two relays 4 stand-by.
In order to which in case of emergency Break-Up System is run, also set up an emergency stop switch S1, described emergency stop switch S1 one end with
The COM ends connection of PLC, the other end of the emergency stop switch S1 and PLC go Enable Pin to connect.For model
For mitsubishi FX2N -48MT-001 PLC, its go Enable Pin can call subroutine realize, in Fig. 1, PLC controls
Device goes Enable Pin to be XO ends, and emergency stop switch S1 is a normal open switch, when the systems are operating normally, go Enable Pin to be connect in sky
State, when emergency stop switch is closed, goes Enable Pin to access 0V voltages, then system halt is run.
In above-mentioned technical proposal, in addition to a frequency converter and a motor, the transducer drive motor rotates, described
The power input of frequency converter is connected with the normally opened contact of the N+2 relay, M ＞ N+1, M, N round numbers.M takes 21, N to take
The power input of 18, i.e. frequency converter is connected with the normally opened contact of the 20th relay 4, and the preferred model of frequency converter is FR-D740-
1.5K-CHT, can motor rotation, the motor is used to drive the feed belt of streamline, passes through frequency converter regulation motor
Rotating speed, so that the belt speed of stability pipeline.
On the basis of above-mentioned technical proposal, with reference to Fig. 2, the constant current output circuit unit include first resistor unit,
Second resistance unit, voltage-stabiliser tube D1, triode Q1 and power interface, one end of the first resistor unit and a relay 4
Normally opened contact, power interface connection, the other end of the first resistor unit is connected with triode Q1 base stage, the voltage stabilizing
Pipe D1 negative pole is connected with triode Q1 base stage, and the colelctor electrode of the triode Q1 is connected with power interface, the triode
Q1 emitter stage is connected with one end of second resistance unit, and the second end of the second resistance unit connects with voltage-stabiliser tube D1 positive pole
Connect and be grounded, further, the first resistor unit is formed in parallel by resistance R1 and resistance R2, the second resistance unit by
Resistance R3 and resistance R4 are formed in parallel, and in order to adjust output current, the second resistance unit is in parallel by resistance R3 and resistance R4
Serial adjustable resistance R8 is formed again afterwards.The constant pressure source distributes voltage to each constant current output circuit unit, controls constant current
The lighting current of output circuit unit is at 80 milliamperes, and power interface connection backlight module FPC point sockets can be reduced because electric current is excessive
Burn FPC risk.
On the basis of above-mentioned technical proposal, with reference to Fig. 3, the photoelectric alarm circuit unit include running indicator, alarm lamp,
Emergency alarm bell, one end of the running indicator is connected with the normally-closed contact of a relay 4, other end ground connection, the alarm lamp and report
Alarm bell is in parallel and one common port is connected with the normally opened contact of the relay 4, another common ground.Under normal circumstances, run
Lamp Chang Liang, shows photoelectric alarm circuit cell operation, and PLC 1 sets specific time interval controls relay 4 and turned on,
Alarm lamp and emergency alarm bell work, alarm lamp is red light, and producing line cleaning glove is reminded by certain frequency, reduces dust transfer, pollution
Environment.
Operation principle：Required the time delay that PLC setting is lighted, to touch photoelectricity by hand and open according to FPC lightings
Close 3（Photoelectric sensor）, delay lights FPC, hand touching optoelectronic switch 3, the output end low potential of PLC controls, correspondingly relay
Device 4 is turned on, constant current output circuit cell operation, exports lighting current, by adjusting resistance, can adjust the lighting current of output,
Relatively conventional push switch, monolithic lighting or 1.5 seconds extinguishing saving time month.
Finally it should be noted that：Above-mentioned embodiment is used for illustrating the present invention, rather than to present invention progress
Limitation, modifies for the technical scheme that those skilled in the art can be still illustrated embodiment, and
Protection scope of the present invention also should be regarded as to any modifications and changes that the present invention makes.
Claims (8)
1. a kind of backlight module lighting system, it is characterised in that including a PLC, a dc source, N number of optoelectronic switch,
M relay, a constant pressure source, N number of constant current output circuit unit and a photoelectric alarm circuit unit, the PLC
Power end is connected to 220V civil powers, and the dc source is connected and powered with the power end of N number of optoelectronic switch, N number of photoelectricity
The COM ends of the earth terminal of switch and PLC are connected, the signal output part of N number of optoelectronic switch and PLC it is defeated
Enter end connection, first control terminal of each relay and the output end of PLC are connected, second of each relay
Control terminal is connected with dc source, and the constant pressure source is connected with the stationary contact of M relay, N number of constant current output circuit
The input of unit is connected with the normally opened contact of N number of relay, and N number of constant current output circuit unit is provided as exporting constant electricity
Stream is for backlight module FPC lightings, the normally opened contact and unit company of the photoelectric alarm circuit unit and the N+1 relay
Connect, the photoelectric alarm circuit unit is provided as reminding operator to wash one's hands in the form of luminous, wherein, M ＞ N, N ＞ 2 and, M, N
Round numbers.
2. a kind of backlight module lighting system as claimed in claim 1, it is characterised in that the constant current output circuit unit includes
First resistor unit, second resistance unit, voltage-stabiliser tube, triode and power interface, one end and one of the first resistor unit
The normally opened contact of individual relay, power interface connection, the other end of the first resistor unit and the base stage of triode are connected, institute
The base stage of the negative pole and triode of stating voltage-stabiliser tube is connected, and the colelctor electrode of the triode is connected with power interface, the triode
Emitter stage be connected with one end of second resistance unit, the positive pole connection of the second end of the second resistance unit and voltage-stabiliser tube and
Ground connection.
3. a kind of backlight module lighting system as claimed in claim 2, it is characterised in that the first resistor unit is by resistance R1
Be formed in parallel with resistance R2, the second resistance unit by resistance R3 and resistance R4 it is in parallel after again serial adjustable hinder R8 and group
Into.
4. a kind of backlight module lighting system as claimed in claim 1, it is characterised in that the photoelectric alarm circuit unit includes
Running indicator, alarm lamp and emergency alarm bell, one end of the running indicator are connected with the normally-closed contact of a relay, other end ground connection,
The alarm lamp and emergency alarm bell are in parallel and one connection end is connected with the normally opened contact of the relay, and another connection end is grounded.
5. a kind of backlight module lighting system as claimed in claim 1, it is characterised in that including a frequency converter and a motor,
The transducer drive motor rotation, the power input of the frequency converter is connected with the normally opened contact of the N+2 relay, M
＞ N+1, M, N round numbers.
6. a kind of backlight module lighting system as claimed in claim 1, it is characterised in that including a touch-screen, the touch-screen
It is connected with the data terminal of PLC and carries out data communication.
7. a kind of backlight module lighting system as described in claim 1-4 any one, it is characterised in that opened including a power supply
Close, the power end of the PLC is connected to 220V civil powers through power switch.
8. a kind of backlight module lighting system as described in claim 1-4 any one, it is characterised in that opened including a jerk
Close, the COM ends of described emergency stop switch one end and PLC are connected, the going of the emergency stop switch other end and PLC makes
Can end connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710581690.8A CN107318194B (en) | 2017-07-17 | 2017-07-17 | Lighting system of backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710581690.8A CN107318194B (en) | 2017-07-17 | 2017-07-17 | Lighting system of backlight module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107318194A true CN107318194A (en) | 2017-11-03 |
| CN107318194B CN107318194B (en) | 2023-05-26 |
Family
ID=60179404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710581690.8A Active CN107318194B (en) | 2017-07-17 | 2017-07-17 | Lighting system of backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107318194B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111787657A (en) * | 2020-08-05 | 2020-10-16 | 安徽江淮汽车集团股份有限公司 | Backlight protection circuit, device and automobile |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104215913A (en) * | 2014-08-07 | 2014-12-17 | 国家电网公司 | Analogue grounding tester used for direct-current power |
| JP2015056240A (en) * | 2013-09-11 | 2015-03-23 | 岩崎電気株式会社 | Flash discharge lamp lighting device and flash irradiation device |
| CN206948671U (en) * | 2017-07-17 | 2018-01-30 | 南京中电熊猫照明有限公司 | A kind of backlight module lighting system |
-
2017
- 2017-07-17 CN CN201710581690.8A patent/CN107318194B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015056240A (en) * | 2013-09-11 | 2015-03-23 | 岩崎電気株式会社 | Flash discharge lamp lighting device and flash irradiation device |
| CN104215913A (en) * | 2014-08-07 | 2014-12-17 | 国家电网公司 | Analogue grounding tester used for direct-current power |
| CN206948671U (en) * | 2017-07-17 | 2018-01-30 | 南京中电熊猫照明有限公司 | A kind of backlight module lighting system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111787657A (en) * | 2020-08-05 | 2020-10-16 | 安徽江淮汽车集团股份有限公司 | Backlight protection circuit, device and automobile |
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| Publication number | Publication date |
|---|---|
| CN107318194B (en) | 2023-05-26 |
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