CN102353823B - A kind of electronic load of semi-passive programmable simulation LED characteristic - Google Patents
A kind of electronic load of semi-passive programmable simulation LED characteristic Download PDFInfo
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- CN102353823B CN102353823B CN201110156419.2A CN201110156419A CN102353823B CN 102353823 B CN102353823 B CN 102353823B CN 201110156419 A CN201110156419 A CN 201110156419A CN 102353823 B CN102353823 B CN 102353823B
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Abstract
The present invention relates to a kind of electronic load of semi-passive programmable simulation LED characteristic, it comprises embedded type control module and prime power circuit module, described electronic load also comprises LED characteristic Simulation circuit module, and this LED characteristic Simulation circuit module comprises LED forward volt-ampere characteristic waveform sampling circuit, high and low frequency AC LED volt-ampere characteristic separation circuit, high frequency variable gain amplifying circuit, low frequency variable-gain amplification circuit, high-speed linear driving circuit; Described prime power circuit module comprises high-speed power circuit and the anti-power circuit of High speed and low resistance and retaking of a year or grade sample circuit.By adding LED characteristic Simulation circuit module and to embedded type control module, prime power circuit, make electronic load of the present invention not only can meet the test request of normal load power supply, more can go out the operating characteristic of true LED load by analog simulation, thus meet test to all LED drive power etc., and obtain more accurately, more reliable test result.
Description
Technical field:
The invention belongs to electronic load field, refer in particular to a kind of electronic load of semi-passive programmable simulation LED characteristic.
Background technology:
In power supply test field, need to use electronic load, by the electrical appliance consumed power in electronic load Reality simulation environment, coordinate the control of PC, display, test is carried out to corresponding power supply and obtains test result.
Existing electronic load, in power supply test, mainly contains CR, CC, CV, CP, pulse five kinds of mode of operations.And in the test of present LED drive power, the electronic load adopted designs according to the characteristic of ordinary electronic load, these electronic loads not special characteristic according to LED itself design, and therefore these electronic loads operating characteristic in test does not simulate the operating characteristic of LED load in true environment substantially.Like this, the test result obtained LED drive power test is obviously inaccurate, insecure.
In addition, existing electronic load, due to the restriction on component technology and design, accomplish that high pressure can only, to sacrifice high speed test for cost, bring very large restriction therefore to the development of high-frequency and high-voltage power circuit.
Summary of the invention:
The object of the invention is to overcome existing electronic load cannot the defect of Reality simulation LED load operating characteristic, provides a kind of electronic load of semi-passive programmable simulation LED characteristic.
The technical scheme that the present invention realizes the employing of its object is: a kind of electronic load of semi-passive programmable simulation LED characteristic, can be used for the test to all LED drive power, it comprises embedded type control module and prime power circuit module, described electronic load also comprises LED characteristic Simulation circuit module, and this LED characteristic Simulation circuit module comprises LED forward volt-ampere characteristic waveform sampling circuit, high and low frequency AC LED volt-ampere characteristic separation circuit, high frequency variable gain amplifying circuit, low frequency variable-gain amplification circuit, high-speed linear driving circuit; Wherein high frequency variable gain amplifying circuit, low frequency variable-gain amplification circuit are parallel relationship; Described prime power circuit module comprises high-speed power circuit and the anti-power circuit of High speed and low resistance and retaking of a year or grade sample circuit; The high-speed power adjustable reference unit that power circuit anti-with High speed and low resistance is connected also is provided with in described prime power circuit module.
In technique scheme, in described embedded type control module, be provided with the mode switch element that can switch CR pattern, CC pattern, CV pattern, CP pattern, pulse mode, LED mode respectively.
Adopt technical solutions according to the invention, on the basis of original electronic load, by adding LED characteristic Simulation circuit module and to embedded type control module, prime power circuit, make electronic load of the present invention not only can meet the test request of normal load power supply, more can go out the operating characteristic of true LED load by analog simulation, thus the test met all LED drive power etc., and obtain more accurately, more reliable test result, provide more scientific foundation to the development of LED drive power.
Accompanying drawing illustrates:
Fig. 1 is the composition frame chart of electronic load of the present invention;
Fig. 2 is the testing process block diagram of electronic load of the present invention in power supply test application;
Embodiment:
As shown in Figure 1, the electronic load of semi-passive simulation LED characteristic of the present invention is on the basis of original embedded type control module 1 and prime power circuit module 2, also set up LED characteristic Simulation circuit module 3, this LED characteristic Simulation circuit module 3 comprises LED forward volt-ampere characteristic waveform sampling circuit 31 (i.e. V-I characteristic waveforms sample circuit), high and low frequency AC LED volt-ampere characteristic separation circuit 32, high frequency variable gain amplifying circuit 33, low frequency variable-gain amplification circuit 34, high-speed linear driving circuit 35; Wherein high frequency variable gain amplifying circuit 33, low frequency variable-gain amplification circuit 34 are parallel relationship; Described prime power circuit module 2 comprises high-speed power circuit 21 and the anti-power circuit 22 of High speed and low resistance of connecting with high-speed power circuit 21 respectively and voltage, electric current retaking of a year or grade sample circuit 23; The high-speed power adjustable reference unit 24 that power circuit 22 anti-with High speed and low resistance is connected also is provided with in described prime power circuit module 2.
Described embedded type control module 1 comprises PC communication interface 11, primary processor 12 and the multi-path digital/analog converter DAC 13 be connected with primary processor 12, multi-channel analog/digital converter ADC 14 and the hardware such as display screen, keyboard, is also provided with the mode switch element 110 that can switch CR pattern, CC pattern, CV pattern, CP pattern, pulse mode, LED mode respectively.
Shown in composition graphs 2, when adopting electronic load of the present invention to test power supply or LED driving, pass on instruction to the sub-load of LED electrical by communication interface parameters by panel or computer, set the tested LED forward threshold voltage of the sub-load of LED electrical, singly the connecing working ressitance and singly connect alternating-current resistance, LED serial number, average current limit value, ripple current limit value, the high-frequency current limit value etc. altogether of LED of LED; Carry cut-in voltage, constant voltage point, steady current point, constant power points, a constant resistance point for drawing when first setting tested plant-grid connection during power supply test, voltage limits requires, current limit requires, ripple current limit value requires, high-frequency current limit value requires, ripple voltage limit value requires, HF voltage limit value requires, the electric current rate of rise, the electric current rate of rise etc.
1, LED forward volt-ampere characteristic and the various pattern of power supply load principle of work:
The sub-load input terminal of output terminal access LED electrical that tested power supply or LED are driven.Send into power circuit 21 two ends and LED volt-ampere forward characteristic sample circuit 31 input end of the sub-load of LED electrical respectively.When electronic load is operated in LED mode, LED driver output and LED are formed the forward VI characteristic low frequency waveform (twice of input terminal voltage frequency of operation of load circuit, direct current is zero) send into the low frequency LED VI low-pass filter circuit of high and low frequency LED forward AC Volt separation circuit 32, the low frequency signal of Frequency is taken out, then sends into next stage variable-gain amplification circuit and go adjusting range; Wherein high frequency variable gain amplifying circuit 33 is also identical with low frequency variable-gain amplification circuit 34 control method.Before feeding next stage, the interchange of two-way is superimposed, send into high-speed linear driving circuit 35 to go to drive high-speed power circuit, now sampling AC signal is out gone to control high-speed power circuit, identical with the interchange curve after LED conducting with the current characteristics reaching high-speed power circuit working.Then by voltage, electric current retaking of a year or grade sample circuit 23, the low-and high-frequency alternating voltage of sampling, DC voltage, low-and high-frequency alternating current, DC current are sent into analog-to-digital conversion circuit ADC, then the digital signal of conversion is sent into primary processor 12, finally calculate wherein parameter by primary processor and whether meet setting value.Correction will be exported by D/A conversion circuit DAC 13 if any deviation primary processor, by mode switch element 110, correction is sent into the amplitude that low-and high-frequency variable-gain amplification circuit goes to adjust AC controling signal again, finally reach the object that LED forward AC behavior is consistent with setting value.
When power supply test, directly by digital-to-analogue conversion DAC 13, the analog quantity set is sent into high-speed linear driving circuit 35 by mode switching circuit 110 by setting power supply test parameter, high-speed power circuit now goes to realize various function by according to the mode of operation switched, and the high-speed power being connected on a loop also coordinates high-speed power circuit to switch to constant current, constant voltage, constant-resistance, invariable power, pulse, LED isotype simultaneously.
2, VF and Von principle of work:
After the sub-load of LED electrical sets the VF of single-unit LED and the cut-in voltage Von of power supply, primary processor 12 will send a DC precision voltage reference consistent with its setting value by analog digital converting unit DAC, this voltage is sent into high-speed power adjustable reference unit 24 to go to control the anti-adjustable DC power circuit 22 of High speed and low resistance, make this power circuit go work with the pattern of constant voltage.
3, LED electrical sub-load overall power circuit working principle:
The hot end of the cold end of high-speed power circuit 21 and the anti-adjustable DC power circuit 22 of High speed and low resistance is linked together, forms a series loop.And the positive output end of tested LED driving or power supply directly accesses the anode of high-speed power circuit 21, the negative output terminal of tested LED driving or power supply directly accesses the negative terminal of the anti-adjustable DC power circuit 22 of High speed and low resistance, then, when the Voltage Establishment of the anti-adjustable DC power circuit 22 of High speed and low resistance, remove by high-speed power circuit 21 loading current controlling whole tested LED driving or power supply in different modes.
The advantage of this circuit: tested LED drive or voltage lower than the anti-adjustable DC power circuit 22 of High speed and low resistance of the output voltage of power supply time, do not have any drawing to carry and reverse irrigated current, LED driving or power supply can be made thoroughly to start reliably, is that current LED drives the most reliable a kind of structure inside test electronic load; And for the high-speed power circuit 21 of connecting with the anti-adjustable DC power circuit 22 of High speed and low resistance, it is mainly operated in LED and drives or the voltage of power supply deducts the operating voltage after the anti-adjustable DC power circuit 22 of High speed and low resistance, makes its high-speed power circuit 21 only bear the sub-fraction of whole test voltage.So when present High voltage power device process technology limit, when high-speed power circuit 21 uses low pressure same current, can more easily realize more speed work.
4, the sub-load of LED electrical principle of work when match system: this equipment can be used alone, also each the equipment of test be can to coordinate by industrial computer centralized control, effect and the job order of each equipment in system testing (Fig. 2) described at this.First need a program control power of alterating and direct current supply 41 when testing, it can realize different operating voltage and different operating frequency or direct current, and simultaneously in parallel with it have overvoltage, under-voltage protection unit 42 for monitoring the voltage condition of electrical network.Next step access power analysing and measuring instrument 43 is responsible for the dash current, steady current, tangible power, useful power, power factor (PF), harmonic current, no-load power consumption, efficiency etc. of analyzing tested product; Then access the automatic switchover that spread measurement unit 44 goes to realize multichannel product test simultaneously, next respectively output terminal is accessed the voltage input end of tested LED driving or power supply, be allowed to condition at when voltage automatically switches to corresponding measurement products and start work; The load of a LED artificial electronic able to programme is accessed again, for loading according to real load operating mode test product at the output terminal of each test product; Now can also access a plug-in expansion oscillograph and voltage and current measurement table 45, for facilitating user directly to watch measurement result with eyes when testing at the output terminal of measured LED driving or power supply.After above equipment all connects, the job order editted in advance is sent by computer, allow each instrument according to work when measuring sequencing by GPIB, RS232, USB, LAN one of them communication interface deactivation, control, gather the measurement result of each surveying instrument, test result is recorded and whether meets the requirements for inquiring about test products.
Claims (2)
1. the electronic load of a semi-passive programmable simulation LED characteristic, can be used in the test to professional LED drive power, it comprises embedded type control module (1) and prime power circuit module (2), it is characterized in that: described electronic load also comprises LED characteristic Simulation circuit module (3), this LED characteristic Simulation circuit module (3) comprises LED forward volt-ampere characteristic waveform sampling circuit (31), high and low frequency AC LED volt-ampere characteristic separation circuit (32), high frequency variable gain amplifying circuit (33), low frequency variable-gain amplification circuit (34), high-speed linear driving circuit (35), sampled signal is sent to high and low frequency AC LED volt-ampere characteristic separation circuit (32) and is separated into low frequency signal and high-frequency signal by described LED forward volt-ampere characteristic waveform sampling circuit (31), described low frequency signal is transferred into low frequency variable-gain amplification circuit (34) to form gain low frequency signal, described high-frequency signal is transferred into high frequency variable gain amplifying circuit (33) to form gain high-frequency signal, described gain low frequency signal and gain high-frequency signal mixed after be sent to high-speed linear driving circuit (35), wherein high frequency variable gain amplifying circuit (33), low frequency variable-gain amplification circuit (34) are parallel relationship, described prime power circuit module (2) comprises high-speed power circuit (21) and the anti-adjustable DC power circuit (22) of High speed and low resistance, the high-speed power adjustable reference unit (24) that adjustable DC power circuit (22) anti-with High speed and low resistance is connected also is provided with in described prime power circuit module (2), described high-speed power circuit (21) and the anti-adjustable DC power circuit (22) of described High speed and low resistance are connected mutually, the anode of described high-speed power circuit (21) connects the positive output end of tested LED drive power, and the negative terminal of described High speed and low resistance anti-adjustable DC power circuit (22) connects the negative output terminal of tested LED drive power.
2. the electronic load of a kind of semi-passive programmable simulation LED characteristic according to claim 1, is characterized in that: be provided with the mode switch element (110) that can switch CR pattern, CC pattern, CV pattern, CP pattern, pulse mode, LED mode respectively in described embedded type control module (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110156419.2A CN102353823B (en) | 2011-06-11 | 2011-06-11 | A kind of electronic load of semi-passive programmable simulation LED characteristic |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110156419.2A CN102353823B (en) | 2011-06-11 | 2011-06-11 | A kind of electronic load of semi-passive programmable simulation LED characteristic |
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| CN102353823A CN102353823A (en) | 2012-02-15 |
| CN102353823B true CN102353823B (en) | 2015-08-05 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102768333B (en) * | 2012-07-02 | 2015-07-01 | 深圳Tcl新技术有限公司 | Performance detection circuit for LED drive circuit |
| TWI486602B (en) * | 2013-10-08 | 2015-06-01 | Wistron Corp | Load apparatus for testing |
| CN104330595B (en) * | 2014-10-30 | 2017-10-10 | 广东威创视讯科技股份有限公司 | Laser DC Module power source aging electronic load device |
| CN107064824A (en) * | 2017-06-08 | 2017-08-18 | 常东记 | A kind of load blocks tested for LED drive power |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1661381A (en) * | 2004-02-24 | 2005-08-31 | 博计电子股份有限公司 | Simulator of AC electronic load suitable to any waveform of AC signal |
| CN101324797A (en) * | 2007-06-15 | 2008-12-17 | 中茂电子(深圳)有限公司 | Electronic load device and circuit thereof |
| CN101359038A (en) * | 2007-08-02 | 2009-02-04 | 中茂电子(深圳)有限公司 | Electronic load device capable of simulating LED characteristic and simulation method thereof |
| CN102033146A (en) * | 2009-09-29 | 2011-04-27 | 致茂电子(苏州)有限公司 | Electronic load with light emitting diode simulation characteristic and light emitting diode characteristic simulation method |
| CN202083722U (en) * | 2011-06-11 | 2011-12-21 | 东莞市创锐电子技术有限公司 | Semi-passive electronic load capable of programming and simulating characteristic of LED (light emitting diode) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5366815B2 (en) * | 2006-11-10 | 2013-12-11 | フィリップス ソリッド−ステート ライティング ソリューションズ インコーポレイテッド | Method and apparatus for controlling LEDs connected in series |
| TW201109696A (en) * | 2009-09-11 | 2011-03-16 | Chroma Ate Inc | Electronic load capable of simulating LED characteristics and simulation method of same |
-
2011
- 2011-06-11 CN CN201110156419.2A patent/CN102353823B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1661381A (en) * | 2004-02-24 | 2005-08-31 | 博计电子股份有限公司 | Simulator of AC electronic load suitable to any waveform of AC signal |
| CN101324797A (en) * | 2007-06-15 | 2008-12-17 | 中茂电子(深圳)有限公司 | Electronic load device and circuit thereof |
| CN101359038A (en) * | 2007-08-02 | 2009-02-04 | 中茂电子(深圳)有限公司 | Electronic load device capable of simulating LED characteristic and simulation method thereof |
| CN102033146A (en) * | 2009-09-29 | 2011-04-27 | 致茂电子(苏州)有限公司 | Electronic load with light emitting diode simulation characteristic and light emitting diode characteristic simulation method |
| CN202083722U (en) * | 2011-06-11 | 2011-12-21 | 东莞市创锐电子技术有限公司 | Semi-passive electronic load capable of programming and simulating characteristic of LED (light emitting diode) |
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Address after: 523000 Guangdong province Dongguan Nancheng District week Xilong Xi Road No. 5 Goldman tech park two of Goldman Technology Building eleventh 05-06 room Applicant after: Dongguan Topfer Electronic Technology Co., Ltd. Address before: North Building No. 22 Fumin Building 523000 Guangdong city of Dongguan province Dongguan Nancheng district too - and section 7 unit 08 Applicant before: Dongguan Topfer Electronic Technology Co., Ltd. |
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Address after: 523000 Guangdong province Dongguan Nancheng District week Xilong Xi Road No. 5 of the two Goldman Goldman technology science and technology building eleventh room 06 Patentee after: Guangdong sharp electronic technology Limited by Share Ltd Address before: 523000 Guangdong province Dongguan Nancheng District week Xilong Xi Road No. 5 Goldman tech park two of Goldman Technology Building eleventh 05-06 room Patentee before: Dongguan Topfer Electronic Technology Co., Ltd. |
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Address after: Room 12002-2021-1, 20 / F, unit 1, building 1, building C, Tangyan South Road, Zhangba Street office, hi tech Zone, Xi'an City, Shaanxi Province Patentee after: Chuang Rui equipment intelligent manufacturing (Xi'an) Co., Ltd Address before: 523000 Dongguan, Guangdong, Nancheng District, 5 Zhou Xi Road, Goldman Sachs technology two phase eleventh Goldman science and technology building eleventh room 06 Patentee before: Guangdong sharp electronic technology Limited by Share Ltd |