CN104507215B - LED module lights detection device and its lights detection method - Google Patents
LED module lights detection device and its lights detection method Download PDFInfo
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- CN104507215B CN104507215B CN201410734914.0A CN201410734914A CN104507215B CN 104507215 B CN104507215 B CN 104507215B CN 201410734914 A CN201410734914 A CN 201410734914A CN 104507215 B CN104507215 B CN 104507215B
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Abstract
Detection device is lighted the invention discloses a kind of LED module and its lights detection method, including：Boost constant voltage output circuits, are electrically connected with the cathode of LED module；Boost potential circuits, are electrically connected with the cathode of LED module；Constant-current circuit, is electrically connected with the anode of LED module；Voltage collection circuit, is electrically connected with LED module；Controller, its output terminal are electrically connected with the input terminal of Boost constant voltages output circuit, Boost potential circuits and constant-current circuit, its input terminal is electrically connected with the output terminal of voltage collection circuit.Boost potential circuits provide voltage for LED module in the present invention, when LED module is extracted, trigger latching circuit, disconnect Boost potential circuits, Boost constant voltage output circuit output voltages judge whether LED module connects, electric current is excessive in circuit when avoiding the LED module from extracting burns LED module, realizes lighting and detecting for LED module.
Description
Technical field
The invention belongs to LED actuation techniques, and in particular to a kind of LED module lights detection device and its lights detection side
Method.
Background technology
At present, lighting for LED module mainly has following two patterns with detection method：First, with one higher than LED module
Voltage source and the cathode of LED module connect, and the anode of LED module is connected with constant-current circuit, and the voltage of voltage source subtracts LED module
Voltage will be eaten up by the MOS, triode or resistance of constant-current circuit, this circuit is simple but lights the voltage model of LED module
Enclose smaller, cost is relatively high；Second, using BOOST from booster circuit, circuit automatic boosting after the power is turned on, LED module to be added in
I.e. feedback signal stops to boost chip after voltage is stepped up lighting LED module and meets the voltage conditions of constant-current circuit
Boosting, the voltage range which lights LED strings is wider, and cost is low, but circuit is relative complex.
Above-mentioned both of which can carry out the normal of LED module and light, but LED detection assembly lines are actually using
During can be due to frequently influencing man-hour or in actual test process due to the wiring of LED module by starting stop key
Terminal, which loosens, can cause to plug, can be because voltage fluctuation or the voltage fluctuation of LED module cathode on metal-oxide-semiconductor with point plug
The voltage for causing to be added in LED module both ends changes, due to the electric current of LED module size and be added in the voltage swing at both ends
It is directly proportional, larger current spikes can be formed, so as to puncture LED module.
The content of the invention
Detection device is lighted in order to solve the above technical problem, the present invention provides a kind of LED module and its lights detection
Method.
In order to achieve the above object, technical scheme is as follows：
The present invention provides a kind of LED module and lights detection device, including：
Boost constant voltage output circuits, its output terminal are electrically connected with the cathode of LED module, for providing electricity for LED module
Pressure；
Boost potential circuits, its output terminal are electrically connected with the cathode of LED module, for providing voltage for LED module；
Constant-current circuit, its input terminal are electrically connected with the anode of LED module；
Voltage collection circuit, it is electrically connected with cathode, the anode of LED module, for gathering the voltage at LED module both ends；
Controller, the input of its output terminal and Boost constant voltages output circuit, Boost potential circuits and constant-current circuit
End is electrically connected, its input terminal is electrically connected with the output terminal of voltage collection circuit.
Boost potential circuits include connected Boost circuit and D/A module in the present invention, Boost circuit
Output terminal is electrically connected with the cathode of LED backlight module, and D/A module is electrically connected with the output terminal of controller.
Based on the above technical solutions, following improvement can also be done：
As preferable scheme, the mounting base for installing LED module is additionally provided with.
As preferable scheme, latching circuit is also set up, its input terminal is electrically connected with the output terminal of constant-current circuit, it is exported
End is electrically connected with the input terminal of controller.
The present invention also provides a kind of LED module to light detection method, including：
Boost constant voltages output circuit close, controller control Boost potential circuits voltage it is ascending rise until
Boost potential circuits stop voltage rising when LED module is lighted, meanwhile, voltage collection circuit gathers the voltage of LED module anode
It is worth and sends controller to and records LED ignition voltage values at this time；Equipment is quick directly with the parameter recorded for the second time
LED module is lighted, as long as carrying out once lighting for the pattern after replacing the LED module of different size；.
As preferable scheme, further include：
When LED module is extracted, latching circuit transmits latch signal and is closed to controller, controller driving Boost potential circuits
Close and drive Boost constant voltages output circuit to apply voltage to LED module；
Voltage collection circuit gathers the magnitude of voltage of LED module cathode and sends controller to and is compared, if voltage acquisition
The magnitude of voltage of circuit collection is identical with the magnitude of voltage that Boost constant voltages output circuit exports, then judges that LED module disconnects, if electric
The magnitude of voltage of Acquisition Circuit collection is pressed then to judge that LED module connects and lights LED by controller in the range of LED ignition voltages
Module.
When LED module connects in the present invention, Boost potential circuits provide ascending raised voltage for LED module, real
Existing LED module is lighted；When LED module is extracted, latching circuit is triggered, disconnects Boost potential circuits, while starts the fixed electricity of Boost
Voltage follower circuit output voltage judges whether LED module connects, and electric current is excessive burns LED in circuit when avoiding the LED module from extracting
Module, realizes lighting and detecting for LED module.
Brief description of the drawings
Fig. 1 is the structure diagram of one embodiment of the present invention.
Fig. 2 is the structure diagram of another embodiment of the present invention.
Embodiment
The preferred embodiment that the invention will now be described in detail with reference to the accompanying drawings.
In order to reach the purpose of the present invention, as shown in Figure 1, being provided in the one of which embodiment of the present invention a kind of
LED module lights detection device, including：
Boost constant voltage output circuits, its output terminal are electrically connected with the cathode of LED module, for providing electricity for LED module
Pressure；
Boost potential circuits, its output terminal are electrically connected with the cathode of LED module, for providing voltage for LED module；
Constant-current circuit, its input terminal are electrically connected with the anode of LED module；
Voltage collection circuit, it is electrically connected with cathode, the anode of LED module, for gathering the voltage at LED module both ends；
Controller, the input of its output terminal and Boost constant voltages output circuit, Boost potential circuits and constant-current circuit
End is electrically connected, its input terminal is electrically connected with the output terminal of voltage collection circuit.
Boost potential circuits include connected Boost circuit and D/A module, Boost boosting electricity in present embodiment
The output terminal on road is electrically connected with the cathode of LED backlight module, and D/A module is electrically connected with the output terminal of controller.
Present embodiment also provides a kind of LED module and lights detection method, including：
Boost constant voltages output circuit close, controller control Boost potential circuits voltage it is ascending rise until
Boost potential circuits stop voltage rising when LED module is lighted, meanwhile, voltage collection circuit gathers the voltage of LED module anode
It is worth and sends controller to and records LED ignition voltage values at this time；Equipment is quick directly with the parameter recorded for the second time
LED module is lighted, as long as carrying out once lighting for the pattern after replacing the LED module of different size.
When LED module connects in present embodiment, Boost potential circuits provide ascending rising electricity for LED module
Pressure, realizes that LED module is lighted.
As shown in Fig. 2, in order to further optimize the implementation result of the present invention, in another embodiment of the invention
In, on the basis of foregoing teachings, be additionally provided with mounting base and latching circuit for installing LED module, latching circuit it is defeated
Enter end to be electrically connected with the output terminal of constant-current circuit, the output terminal of latching circuit is electrically connected with the input terminal of controller.
Present embodiment also provides a kind of LED module and lights detection method, including：
Step 1, Boost constant voltages output circuit are closed, and the voltage of controller control Boost potential circuits is ascending
Rise Boost potential circuits when LED module is lighted and stop voltage rising, meanwhile, voltage collection circuit collection LED module is born
The magnitude of voltage of pole simultaneously sends controller to and records LED ignition voltage values at this time；Equipment is for the second time directly to record
Parameter quickly lights LED module, as long as carrying out once lighting for the pattern after replacing the LED module of different size.
Step 2, when LED module is extracted, latching circuit transmits latch signal to controller, controller driving Boost voltages
Circuit is closed and driving Boost constant voltages output circuit applies voltage to LED module；
Step 3, voltage collection circuit gathers the magnitude of voltage of LED module cathode and sends controller to and is compared, if electric
Press the magnitude of voltage of Acquisition Circuit collection identical with the magnitude of voltage that Boost constant voltages output circuit exports, then judge that LED module is broken
Open, if the magnitude of voltage of voltage collection circuit collection in the range of LED ignition voltage values, judges LED module connection and by controlling
Device lights LED module.
In present embodiment LED module extract when circuit in magnitude of voltage drastically decline latching circuit send latch signal will
Boost potential circuits disconnect, while start Boost constant voltage output circuit output voltages and judge whether LED module connects, and ensure
Electric current is excessive in circuit when LED module is extracted burns LED module, and LED module is lighted when connecting by Boost potential circuits, is realized
LED module being lighted and detecting.
Above-described is only the preferred embodiment of the present invention, it is noted that for those of ordinary skill in the art
For, without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to the present invention
Protection domain.
Claims (1)
1. a kind of LED module lights detection method, it is characterised in that light detection device using LED module and be detected, it is described
LED module, which lights detection device, to be included：
Boost constant voltage output circuits, its output terminal are electrically connected with the cathode of LED module, for providing voltage for LED module；
Boost potential circuits, its output terminal are electrically connected with the cathode of LED module, for providing voltage for LED module；
Constant-current circuit, its input terminal are electrically connected with the anode of LED module；
Voltage collection circuit, it is electrically connected with cathode, the anode of LED module, for gathering the voltage at LED module both ends；
Controller, the input terminal electricity of its output terminal and Boost constant voltages output circuit, Boost potential circuits and constant-current circuit
Connection, its input terminal are electrically connected with the output terminal of voltage collection circuit；
Latching circuit, its input terminal are electrically connected with the output terminal of constant-current circuit, its output terminal is electrically connected with the input terminal of controller；
The LED module is lighted detection method and is specifically included：
Step 1, Boost constant voltages output circuit are closed, and controller controls the ascending rising of voltage of Boost potential circuits
Until Boost potential circuits stop voltage rising when LED module is lighted, meanwhile, voltage collection circuit collection LED module anode
Magnitude of voltage simultaneously sends controller to and records LED ignition voltage values at this time；Equipment is in the parameter directly to record for the second time
LED modules quickly are lighted, as long as carrying out once lighting for the pattern after replacing the LED modules of different size；
Step 2, when LED module is extracted, latching circuit transmits latch signal to controller, controller driving Boost potential circuits
Close and driving Boost constant voltages output circuit applies voltage to LED module；
Step 3, voltage collection circuit gathers the magnitude of voltage of LED module cathode and sends controller to and is compared, if voltage is adopted
The magnitude of voltage of collector collection is identical with the magnitude of voltage that Boost constant voltages output circuit exports, then judges that LED module disconnects, if
The magnitude of voltage of voltage collection circuit collection is identical with LED ignition voltage values, then judges that LED module is connected and lighted by controller
LED module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410734914.0A CN104507215B (en) | 2014-12-04 | 2014-12-04 | LED module lights detection device and its lights detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410734914.0A CN104507215B (en) | 2014-12-04 | 2014-12-04 | LED module lights detection device and its lights detection method |
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| Publication Number | Publication Date |
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| CN104507215A CN104507215A (en) | 2015-04-08 |
| CN104507215B true CN104507215B (en) | 2018-05-04 |
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| CN201410734914.0A Active CN104507215B (en) | 2014-12-04 | 2014-12-04 | LED module lights detection device and its lights detection method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105099170A (en) * | 2015-09-14 | 2015-11-25 | 东莞市亚通光电有限公司 | Power supply circuit for detecting backlight module |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1607715A (en) * | 2003-10-08 | 2005-04-20 | 罗姆股份有限公司 | Switching power supply unit |
| CN1779523A (en) * | 2004-11-24 | 2006-05-31 | Lg.菲利浦Lcd株式会社 | Circuit and method for sensing open-circuit lamp, and display device therewith |
| CN201636548U (en) * | 2010-03-26 | 2010-11-17 | 广州市雅江光电设备有限公司 | LED portable battery lamp |
| CN201680231U (en) * | 2010-03-17 | 2010-12-22 | Bcd半导体制造有限公司 | LED backlight driving device of LCD |
| CN102548140A (en) * | 2010-12-28 | 2012-07-04 | 松下电器产业株式会社 | Led lighting device and illumination apparatus including same |
| CN102762005A (en) * | 2011-04-28 | 2012-10-31 | 东莞勤上光电股份有限公司 | LED luminaire and LED lamp protecting device |
| JP2014108004A (en) * | 2012-11-29 | 2014-06-09 | Alpine Electronics Inc | Backlight dimming controller and dimming control method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101305687B1 (en) * | 2011-10-28 | 2013-09-09 | 엘지이노텍 주식회사 | LED Protection Circuit |
-
2014
- 2014-12-04 CN CN201410734914.0A patent/CN104507215B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1607715A (en) * | 2003-10-08 | 2005-04-20 | 罗姆股份有限公司 | Switching power supply unit |
| CN1779523A (en) * | 2004-11-24 | 2006-05-31 | Lg.菲利浦Lcd株式会社 | Circuit and method for sensing open-circuit lamp, and display device therewith |
| CN201680231U (en) * | 2010-03-17 | 2010-12-22 | Bcd半导体制造有限公司 | LED backlight driving device of LCD |
| CN201636548U (en) * | 2010-03-26 | 2010-11-17 | 广州市雅江光电设备有限公司 | LED portable battery lamp |
| CN102548140A (en) * | 2010-12-28 | 2012-07-04 | 松下电器产业株式会社 | Led lighting device and illumination apparatus including same |
| CN102762005A (en) * | 2011-04-28 | 2012-10-31 | 东莞勤上光电股份有限公司 | LED luminaire and LED lamp protecting device |
| JP2014108004A (en) * | 2012-11-29 | 2014-06-09 | Alpine Electronics Inc | Backlight dimming controller and dimming control method |
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| CN104507215A (en) | 2015-04-08 |
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Address after: 215000 No. 18 Weiwen Road, Suzhou Industrial Park, Jiangsu Province Patentee after: Hai Electronic Technology (Suzhou) Co., Ltd. Address before: 215000 No. 18 Weiwen Road, Suzhou Industrial Park, Suzhou City, Jiangsu Province Patentee before: SUZHOU INDUSTRIAL PARK HIDEA MECHATRONICS TECHNOLOGY CO., LTD. |