CN103646625B - Current regulation method and system, pre-driver module and programmable logic gate array - Google Patents
Current regulation method and system, pre-driver module and programmable logic gate array Download PDFInfo
- Publication number
- CN103646625B CN103646625B CN201310724453.4A CN201310724453A CN103646625B CN 103646625 B CN103646625 B CN 103646625B CN 201310724453 A CN201310724453 A CN 201310724453A CN 103646625 B CN103646625 B CN 103646625B
- Authority
- CN
- China
- Prior art keywords
- led
- current value
- drive module
- gate array
- programmable gate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
An embodiment of the invention discloses a current regulation method and system, a pre-driver module and a programmable logic gate array. The current regulation method comprises the steps of detecting current values of LEDs driven by the pre-driver module through a pre-driver module, transmitting the detected current value of each LED to the programmable logic gate array, enabling the programmable logic gate array to adjust the drive current values output by the pre-driver module according to the detected current value of each LED and threshold values, and then combining the adjusted drive current values transmitted by the programmable logic gate array with the adjusted drive current values output by at least two driven LEDs. Therefore, when a certain LED is damaged, the pre-driver module can adjust the output drive current values to prevent good LED lamps from being used in an overload mode and further the LED damage speed is reduced.
Description
Technical field
The present embodiments relate to circuit field, more particularly, to a kind of current adjusting method and system, prime drive module
And programmable gate array.
Background technology
Giant-screen numeral optical processing (dlp, digital light procession) combination enters light emitting diode
(led) the light source epoch, the feature of LED light source is large driven current density, and brightness and driving current value size are proportional, caloric value
Also it is directly proportional with electric current.
Currently, the requirement more and more higher to brightness for the market, LED light source is also gradually upgraded by single lamp pattern the mould of multi-light parallel
Formula is to carry bigger electric current, thus producing bigger brightness, the feature of this type light source is envelope inside a LED lamp bubble
It is loaded into the little bulb of multiple led, the rated current that the little bulb of each led carries is identical, the widely used driving mould of current industry
Block drives the little bulb of led of some, and with the driven little bulb of led of the driving current value supply of maximum output constant current
Use, the maximum output constant current of output is just evenly distributed to the little bulb of each led, when there being the little bulb-damage of led, drive mould
Block is still exported using maximum output constant current as driving current value, leads to the electric current on the little bulb of led damaging to be evenly distributed to
The little bulb of led on, thus leading to originally good led little bulb overload to use, accelerate the rate of decay of bulb.
Content of the invention
Embodiments provide a kind of current adjusting method and system, prime drive module and FPGA gate array
Row, can solve the problem that when there being LED lamp bubble to damage, the problem that good LED lamp bubble overload is accelerated using the bulb-damage speed leading to.
Current adjusting method provided in an embodiment of the present invention, comprising: prime drive module is to described prime drive module institute
The current value of the light emitting diode led driving is detected, described prime drive module driving at least two led, at least two
In described led, each described led is parallel with one another；The current value of each the described led detecting is passed by described prime drive module
Transport to programmable gate array so that programmable gate array is according to the current value of the described led of each detecting and threshold
The driving current value of value adjustment described prime drive module output；Described prime drive module receives described FPGA gate array
Driving current value after the defeated adjustment of biographies, and to the driving current after the described adjustment of the output of led described at least two driving
Value.
Prime drive module provided in an embodiment of the present invention, comprising: driver element, detector unit, output unit and input
Unit；Driver element is used for driving at least two light emitting diode led；Detector unit is used for described prime drive module is driven
The current value of dynamic described led is detected, in led described at least two, each described led is parallel with one another；Output unit is used for
The current value of each the described led detecting is transmitted to programmable gate array so that programmable gate array according to
The driving current value of prime drive module output described in the current value of each described led detecting and adjusting thresholds；Input is single
Unit is used for receiving the driving current value after the adjustment of described programmable gate array transmission, and to described at least two driving
Driving current value after the described adjustment of led output.
Electric current provided in an embodiment of the present invention adjusts system, comprising: at least one prime drive module, described prime drive
At least two led of module drive and programmable gate array, in led described at least two, each described led is parallel with one another；
Described prime drive module is used for the current value of the described led that described prime drive module is driven is detected, and will examine
The current value of the described led measuring transmits to described programmable gate array；Described programmable gate array is used for basis
The driving current value of prime drive module output described in the current value of each described led detecting and adjusting thresholds；Before described
Level drive module is additionally operable to receive the driving current value after the adjustment of described programmable gate array transmission, and to driving extremely
Few two described led export the driving current value after described adjustment.
Programmable gate array provided in an embodiment of the present invention, comprising: described programmable gate array includes: input
Unit, logical block and output unit；Input block is used for receiving the electric current of the light emitting diode led of prime drive module transmission
Value, led described at least two is driven by described prime drive module, and in led described at least two, each described led is mutual simultaneously
Connection；Logical block is used for according to the current value of each described led receiving and prime drive module output described in adjusting thresholds
Driving current value；Output unit is used for transmitting to described prime drive module so that described by the driving current value after adjustment
Prime drive module is to the driving current value after the described adjustment of the output of led described at least two driving.
As can be seen from the above technical solutions, the embodiment of the present invention has the advantage that
In the embodiment of the present invention, by prime drive module, the current value of the led that prime drive module is driven is carried out
Detection, and the current value of each led detecting is transmitted to programmable gate array so that programmable gate array root
The driving current value exporting according to current value and the adjusting thresholds prime drive module of each led detecting, then will receive can
Driving current value after the adjustment of programmed logic gate array transmission, and to the driving after at least two led output adjustments driving
Current value, so can be when led be damaged, and prime drive module can adjust the driving current value of output, the led preventing
Bulb overload uses, and then slows down the rate of decay of led.
Brief description
Fig. 1 is one embodiment schematic diagram of current adjusting method in the embodiment of the present invention；
Fig. 2 is another embodiment schematic diagram of current adjusting method in the embodiment of the present invention；
Fig. 3 is another embodiment schematic diagram of current adjusting method in the embodiment of the present invention；
Fig. 4 be the embodiment of the present invention in schematic diagram from prime drive module to led output driving current；
Fig. 5 is one embodiment schematic diagram of prime drive module in the embodiment of the present invention；
Fig. 6 is one embodiment schematic diagram of programmable gate array in the embodiment of the present invention；
Fig. 7 is electric current adjustment one embodiment schematic diagram of system in the embodiment of the present invention.
Specific embodiment
Embodiments provide a kind of current adjusting method and system, prime drive module and FPGA gate array
Row, can be when there being LED lamp bubble to damage, and the LED lamp bubble overload preventing uses.
Refer to Fig. 1, in the embodiment of the present invention, one embodiment of current adjusting method includes:
101st, prime drive module detects to the current value of the led that prime drive module is driven；
In the present embodiment, prime drive module drives at least two led, and at least two led, each led is parallel with one another,
In actual applications, the current value of each led that prime drive module can be driven to this prime drive module detects,
The current value of part led being driven can also be detected.
102nd, prime drive module transmits the current value of each led detecting to programmable gate array；
In the present embodiment, the current value of each led detecting can be transferred to programmable patrolling by prime drive module
Collect gate array so that programmable gate array drives mould according to the current value of each led detecting and adjusting thresholds prime
The driving current value of block output, programmable gate array is can to carry out logical calculated it is possible to send out prime drive module
The analogue signal sent is converted to digital signal.
103rd, prime drive module receives the driving current value after the adjustment of programmable gate array transmission, and to driving
At least two led output adjustments after driving current value.
In the present embodiment, prime drive module receives the driving current after the adjustment of this programmable gate array transmission
Value, and the driving current value after adjustment is transferred at least two driven led.
In the present embodiment, by prime drive module, the current value of the led that prime drive module is driven is detected,
And transmit to programmable gate array the current value of each led detecting so that programmable gate array is according to inspection
The current value of each led measuring and the driving current value of adjusting thresholds prime drive module output, then will receive programmable
Driving current value after the adjustment of logic gate array transmission, and to the driving current after at least two led output adjustments driving
Value, so can be when led be damaged, and prime drive module can adjust the driving current value of output, the LED lamp bubble preventing
Overload uses, and then slows down the rate of decay of led.
Refer to Fig. 2, in the embodiment of the present invention, another embodiment of current adjusting method includes:
201st, prime drive module detects to the current value of the led that prime drive module is driven；
In the present embodiment, prime drive module drives at least two led, and at least two led, each led is parallel with one another,
In actual applications, the current value of each led that prime drive module can be driven to this prime drive module detects,
The current value of part led being driven can also be detected, prime drive module can set fixed time interval pair
Led is detected.
202nd, prime drive module transmits the current value of each led detecting to programmable gate array；
In the present embodiment, the current value of each led detecting can be transferred to programmable patrolling by prime drive module
Collect gate array so that programmable gate array drives mould according to the current value of each led detecting and adjusting thresholds prime
The driving current value of block output, programmable gate array is can to carry out logical calculated it is possible to send out prime drive module
The analogue signal sent is converted to digital signal, programmable gate array can for field programmable gate array (fpga,
Field programmable gate array).
203rd, the current value of each led receiving and threshold value are compared by programmable gate array；
204th, programmable gate array is adjusted according to the driving current value that comparative result exports to prime drive module
Whole, and the driving current value after adjustment is transmitted to prime drive module；
In the present embodiment, after step 202, programmable gate array by the current value of each led receiving with
Threshold value is compared, and the rated current that each led carries is identical, and threshold value is equal with the rated current of led, in actual applications,
The analogue signal of the current value of each led of expression that prime drive module is first sent by programmable gate array is converted to numeral
Then the current value of each led in digital signal and threshold value are compared by signal, then programmable gate array according to than
The driving current value that relatively result exports to prime drive module is adjusted, and the driving current value after adjustment is transmitted to prime
Drive module.
205th, prime drive module receives the driving current value after the adjustment of programmable gate array transmission, and to driving
At least two led output adjustments after driving current value.
In the present embodiment, prime drive module receives the driving current after the adjustment of this programmable gate array transmission
Value, and the driving current value after adjustment is transferred at least two driven led.
In the present embodiment, by prime drive module, the current value of each led that prime drive module is driven is carried out
Detection, and the current value of each led detecting is transmitted to programmable gate array, programmable gate array will receive
To the current value of each led be compared with threshold value, and driving current prime drive module being exported according to comparative result
Value is adjusted, and then prime drive module will receive the driving current value after the adjustment that programmable gate array transmits, and
Driving current value to after at least two led output adjustments driving, so can be when led be damaged, prime drive module
The driving current value of output can be adjusted, the LED lamp bubble overload preventing uses, and then slows down the rate of decay of led.
For ease of understanding, with an instantiation, the current adjusting method in the embodiment of the present invention is described below, please
Refering to Fig. 3, in the embodiment of the present invention, another embodiment of current adjusting method includes:
301st, prime drive module detects to the current value of the led that prime drive module is driven；
In the present embodiment, prime drive module drives at least two led, and at least two led, each led is parallel with one another,
In actual applications, can there is one or more prime drive module, each prime drive module can drive some
Led, prime drive module all can be detected it is also possible to the led's of part to the current value of each led being driven
Current value is detected.
For the ease of being better understood from, with two prime drive modules, each prime drive module drives three to the present embodiment
Illustrate as a example individual led parallel connection, specifically, please with further reference to Fig. 4, Fig. 4 is prime drive module to led output driving electricity
The schematic diagram of stream, two prime drive modules are respectively prime drive module a and prime drive module b, and prime drive module a is driven
Dynamic led1, led2 and led3, prime drive module b drive led4, led5 and led6, led1, led2, led3, led4, led5 and
Led6 is parallel with one another, and the rated current of each led is 6a, and before being set in the detection of prime drive module, this six led all do not have
Damage, now prime drive module a exports the maximum drive current value of 18a constant current, drive module b to led1, led2 and led3
Export the maximum drive current value of 18a constant current to led4, led5 and led6, the electric current that led1, led2 and led3 are used is just
It is the rated current of 6a, prime drive module a first detects to the current value of led1, then current value is detected four kinds of feelings
Condition, the numerical value specifically detecting is as shown in table 1 below.
Table 1
| Led1 detects current value |
| 6a |
| 9a |
| 18a |
| 0a |
If it should be noted that an electric current led is detected is 0a, prime drive module needs to detect that this prime drives
The electric current of each led in all of led that module is driven.
302nd, prime drive module transmits the current value of each led detecting to programmable gate array；
In the present embodiment, after step 301, the current value of the led1 detecting can be transmitted by prime drive module a
To programmable gate array.
303rd, the current value of each led receiving and threshold value are compared by programmable gate array, if comparing knot
Fruit is unequal, then execution step 304, if comparative result is equal, execution step 306；
In the present embodiment, the rated current that each led carries is identical, and threshold value is equal with the numerical value of the rated current of led,
After step 302, due to led carry rated current be 6a, so this threshold value be 6a, by the current value of the led1 receiving with
Threshold value compares, if the current value of led1 that programmable gate array receives be 9a it is determined that comparative result is unequal, if can
The current value of the led1 that programmed logic gate array receives be 18a it is determined that comparative result is unequal, if FPGA gate array
The current value arranging the led1 receiving is 0a it is determined that comparative result is unequal.
304th, programmable gate array determines the led being damaged at least two led driving；
In the present embodiment, if comparative result is unequal, programmable gate array determines at least two led driving
The led being damaged.
305th, programmable gate array determines in driving according to the current value of the led receiving from prime drive module
The number of the led damaging at least two led, and driving electricity prime drive module being exported according to the number of the led damaging
Flow valuve is adjusted；
In the present embodiment, after the step 304, because when led does not all damage, the electric current of each led is 6a, if can
The current value of the led1 that prime drive module a that programmed logic gate array receives sends be 9a it is determined that in led1, led2 and
Have led to damage in led3, and damage for led2 or be led3；If the prime that programmable gate array receives is driven
The current value of the led1 that dynamic model block a sends is 18a it is determined that there being two led to damage in led1, led2 and led3, and damages
For led2 and led3；If the current value of the led1 that prime drive module a that programmable gate array receives sends is 0a,
And set the current value of led2 and led3 receiving and be 6a it is determined that there being led to damage in led1, led2 and led3
Bad, and be led1, the drive that then programmable gate array can export to prime drive module according to the number of the led damaging
Galvanic electricity flow valuve is adjusted.
It should be noted that being that the current value of led2 and led3 with the current value of led1 as 0a, receiving is here
Illustrate as a example 6a, can also have other situations, therefore not to repeat here.
The driving current value that programmable gate array can export to prime drive module according to the number of the led damaging
It is adjusted particularly as follows: the driving current value that prime drive module exports is deducted the electricity of specified quantity by programmable gate array
Flow valuve, the driving current value after being adjusted is it is intended that the number that the current value of quantity is the led damaging is multiplied by the specified electricity of led
Stream, in actual applications, the numerical value of the driving current value of prime drive module output is 18a, if the number of the led damaging is one
Individual, then driving current value 18a that prime drive module exports is deducted the current value 6*1 of specified quantity by programmable gate array
=6a, the driving current value after being adjusted is 12a, if the number of the led damaging is two, programmable gate array will
Driving current value 18a of prime drive module output deducts the current value 6*2=12a of specified quantity, the driving electricity after being adjusted
Flow valuve is 6a.
It should be noted that all led that prime drive module is driven all damage, then each institute detecting
The electric current of the led driving is 0a, now this prime drive module not output driving current, but this prime drive module is not
Impact other prime drive module work.
Further illustrate, in a system, all of led all damages, then the screen that this system controls may turn off.
306th, programmable gate array determines that the driving current value of prime drive module output is maximum drive current value；
In the present embodiment, if comparative result is equal, programmable gate array determines the drive of prime drive module output
Galvanic electricity flow valuve is maximum drive current value, and all led's that maximum drive current value is driven by this prime drive module is specified
Electric current sum, comparative result equal by: the current value of each led that prime drive module is driven is equal to threshold value, in step
After 303, if the current value of led1 that programmable gate array receives is 6a, and programmable gate array receives
The current value of led2 and led3 be 6a and then determine that comparative result is equal, now programmable gate array determines that prime drives
The driving current value of module output is maximum drive current value 18a.
307th, programmable gate array by this, transmit to prime drive module by the driving current value after adjusting；
In the present embodiment, programmable gate array by this, transmit to prime drive module by the driving current value after adjusting,
In actual applications, the driving current value after this adjustment of programmable gate array is transmitted in the form of analogue signal and is driven to prime
Dynamic model block.
308th, prime drive module receives the driving current value after the adjustment of programmable gate array transmission, and to driving
At least two led output adjustments after driving current value.
In the present embodiment, prime drive module can receive the driving current after the adjustment of programmable gate array transmission
Value, and to the driving current value after at least two led output adjustments driving, for example, if prime drive module a receives adjustment
Driving current value afterwards is 12a, then to driving current value 12a of led1, led2 and led3 output；If prime drive module a connects
Receiving the driving current value after adjustment is 6a, then to driving current value 6a of led1, led2 and led3 output；If prime drives mould
It is 18a that block a receives the driving current value after adjustment, then to driving current value 18a of led1, led2 and led3 output.
In the present embodiment, by prime drive module, the current value of each led that prime drive module is driven is carried out
Detection, and the current value of each led detecting is transmitted to programmable gate array so that programmable gate array root
The driving current value exporting according to current value and the adjusting thresholds prime drive module of each led detecting, programmable gate
The current value of each led receiving and threshold value are compared by array, and according to comparative result, prime drive module are exported
Driving current value be adjusted, then prime drive module will receive programmable gate array transmission adjustment after driving
Current value, and to the driving current value after at least two led output adjustments driving, so can be when led be damaged, prime
Drive module can adjust the driving current value of output, and the LED lamp bubble overload preventing uses, and then slows down the damage speed of led
Degree.
Below the prime drive module of the embodiment of the present invention for executing above-mentioned current adjusting method is illustrated, its
With reference to Fig. 5, one embodiment of prime drive module in the embodiment of the present invention, this prime drive module includes basic logical structure:
Driver element 501, detector unit 502, output unit 503 and input block 504；
Driver element 501, for driving at least two led；
Detector unit 502, for detecting to the current value of the led that prime drive module is driven, at least two led
In each led parallel with one another；
Output unit 503, for the current value of each led detecting is transmitted to programmable gate array so that
The driving electricity that programmable gate array exports according to current value and the adjusting thresholds prime drive module of each led detecting
Flow valuve；
Input block 504, for receiving the driving current value after the adjustment that programmable gate array transmits, and to driving
At least two led output adjustments after driving current value.
In the present embodiment, by detector unit 502, the current value of the led that prime drive module is driven is detected,
Output unit 503 transmits the current value of each led detecting to programmable gate array so that FPGA gate array
Row are according to the driving current value of the current value of each led detecting and the output of adjusting thresholds prime drive module, input block
Driving current value after 504 adjustment receiving programmable gate array transmission, and at least two led output adjustments driving
Driving current value afterwards, so can be when led be damaged, and prime drive module can adjust the driving current value of output, prevents
The LED lamp bubble overload stopped uses, and then slows down the rate of decay of led.
Below the programmable gate array of the embodiment of the present invention for executing above-mentioned current adjusting method is said
Bright, with reference to Fig. 6, one embodiment of programmable gate array in the embodiment of the present invention, this prime drives its basic logical structure
Module includes: input block 601, logical block 602, output unit 603；
Input block 601, for receiving the current value of the led of prime drive module transmission, at least two led are driven by prime
Dynamic model block is driven, and at least two led, each led is parallel with one another；
Logical block 602, for the current value according to each led receiving and the output of adjusting thresholds prime drive module
Driving current value；
Output unit 603, for transmitting to prime drive module the driving current value after adjustment so that prime drives mould
Block is to the driving current value after at least two led output adjustments driving.
The current value of the led of prime drive module transmission, logical block in the present embodiment, is received by input block 601
602 driving current value being exported according to the current value of each led receiving and adjusting thresholds prime drive module, output unit
603 by adjustment after driving current value transmit to prime drive module so that prime drive module to drive at least two led
Driving current value after output adjustment, so can be when led be damaged, and the driving after programmable gate array will adjust is electric
Value. transfer is to prime drive module, and then prime drive module can adjust the driving current value of output, the LED lamp preventing
Bubble overload uses, and then slows down the rate of decay of led.
Below the electric current adjustment system of the embodiment of the present invention for executing above-mentioned current adjusting method is illustrated, its
With reference to Fig. 7, in the embodiment of the present invention, electric current adjusts one embodiment of system to basic logical structure, and this electric current adjustment system includes:
At least one prime drive module 701, this prime drive module drive 701 at least two led702 and FPGA gate array
Row 703, at least two led702, each led702 is parallel with one another；
Prime drive module 701, for detecting to the current value of the led702 that prime drive module 701 is driven,
And transmit the current value of the led702 detecting to programmable gate array 703；
Programmable gate array 703, for the current value according to each led702 detecting and adjusting thresholds prime
The driving current value of drive module 701 output；
Prime drive module 701, is additionally operable to receive the driving current after the adjustment of programmable gate array 703 transmission
Value, and to the driving current value after at least two led702 output adjustments driving.
In the present embodiment, by the current value to the led702 that prime drive module 701 is driven for the prime drive module 701
Detected, and the current value of the led702 detecting is transmitted to programmable gate array 703, programmable gate array
703 driving current value being exported according to the current value of each led702 detecting and adjusting thresholds prime drive module 701, front
Level drive module 701 receives the driving current value after the adjustment of programmable gate array 703 transmission, and at least two driving
Driving current value after individual led702 output adjustment, so can be when led be damaged, and prime drive module can adjust output
Driving current value, the LED lamp bubble overload preventing uses, and then slows down the rate of decay of led.
Please see also Fig. 7, electric current adjustment another embodiment of system in the embodiment of the present invention, this electric current adjusts system bag
Include: at least one prime drive module 701, this prime drive module drive 701 at least two led702 and FPGA
Gate array 703；
Prime drive module 701, for detecting to the current value of the led702 that prime drive module 701 is driven,
And transmit the current value of the led702 detecting to programmable gate array 703；
Programmable gate array 703, is additionally operable to be compared the current value of each led702 receiving and threshold value,
And be adjusted according to the driving current value that comparative result exports to prime drive module 701；It is specified that each led702 carries
Electric current is identical, and threshold value is equal with the numerical value of the rated current of led702；
Prime drive module 701, is additionally operable to receive the driving current after the adjustment of programmable gate array 703 transmission
Value, and to the driving current value after at least two led702 output adjustments driving；Each led702 at least two led702
Parallel with one another.
In the present embodiment, by the electricity to each led702 that prime drive module 701 is driven for the prime drive module 701
Flow valuve is detected, and the current value of each led702 detecting is transmitted to programmable gate array 703, programmable patrols
Collect gate array 703 to be compared the current value of each led702 receiving and threshold value, and according to comparative result, prime is driven
The driving current value of dynamic model block 701 output is adjusted, and then prime drive module 701 will receive programmable gate array
Driving current value after the adjustment of 703 transmission, and to the driving current value after at least two led702 output adjustments driving, this
Sample can be when led be damaged, and prime drive module can adjust the driving current value of output, the LED lamp bubble overload preventing
Use, and then slow down the rate of decay of led.
In order to be better understood from the above embodiments, the interaction to each device that electric current adjustment system includes is right below
Data in electric current adjustment system or signal interactive mode illustrate, and please referring again to Fig. 7, this electric current adjusts system bag
Include: at least two led702 and FPGA that at least one prime drive module 701, this prime drive module 701 drive
Gate array 703.
Prime drive module 701 detects to the current value of the led702 that prime drive module 701 is driven, and will examine
The current value of the led702 measuring transmits to programmable gate array 703, and prime drive module 701 drives at least two
Led702, at least two led702, each led702 is parallel with one another.
The current value of each led702 receiving and threshold value are compared by programmable gate array 703；Each
The rated current that led702 carries is identical, and threshold value is equal with the numerical value of the rated current of led702, and programmable gate array can
Think fpga.
If comparative result is unequal, programmable gate array 703 determines at least two led702 driving to be had
The led702 damaging, and damage at least two led702 driving is determined according to the current value of each led702 receiving
Led702 number, and carried out according to the number driving current value that prime drive module 701 is exported of the led702 damaging
Adjustment, specifically, the driving current value that prime drive module 701 exports is deducted specified quantity by programmable gate array 703
Current value, the driving current value after being adjusted, the current value of this specified quantity is that the number of the led702 damaging is multiplied by
The rated current of led702.
If this comparative results all are equal, programmable gate array 703 determines the drive of prime drive module 701 output
Galvanic electricity flow valuve is maximum drive current value, all led702's that maximum drive current value is driven by prime drive module 701
Rated current sum, comparative result equal by: the current value of each led702 that prime drive module 701 is driven is equal to threshold
Value.
Programmable gate array 703 transmits the driving current value after adjusting to prime drive module 701.
Prime drive module 701 receives the driving current value after the adjustment of programmable gate array 703 transmission, and to drive
Driving current value after at least two dynamic led702 output adjustments.
In the present embodiment, by the current value to the led702 that prime drive module 701 is driven for the prime drive module 701
Detected, and the current value of the led702 detecting is transmitted to programmable gate array 703, programmable gate array
703 driving current value being exported according to the current value of each led702 detecting and adjusting thresholds prime drive module 701, front
Level drive module 701 receives the driving current value after the adjustment of programmable gate array 703 transmission, and at least two driving
Driving current value after individual led702 output adjustment, so can be when led be damaged, and prime drive module can adjust output
Driving current value, the LED lamp bubble overload preventing uses, and then slows down the rate of decay of led.
Those skilled in the art can be understood that, for convenience and simplicity of description, the system of foregoing description,
Device and the specific work process of unit, may be referred to the corresponding process in preceding method embodiment, will not be described here.
The above, above example only in order to technical scheme to be described, is not intended to limit；Although with reference to front
State embodiment the present invention has been described in detail, it will be understood by those within the art that: it still can be to front
State the technical scheme described in each embodiment to modify, or equivalent is carried out to wherein some technical characteristics；And these
Modification or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (6)
1. a kind of current adjusting method is it is characterised in that methods described includes:
Prime drive module detects to the current value of the light emitting diode led that described prime drive module is driven, described
Prime drive module drives at least two led, and in led described at least two, each described led is parallel with one another；
Described prime drive module the current value of each the described led detecting is transmitted to programmable gate array so that
Programmable gate array is according to the current value of the described led of each detecting and prime drive module output described in adjusting thresholds
Driving current value；
Described prime drive module receives the driving current value after the adjustment of described programmable gate array transmission, and to driving
Led described at least two output described adjustment after driving current value；
Described prime drive module receives the step bag before the driving current value after the adjustment of described programmable gate array
Include:
The current value of each the described led receiving is compared by described programmable gate array with threshold value；
Described programmable gate array is adjusted according to the driving current value that comparative result exports to described prime drive module
Whole, and the driving current value after described adjustment is transmitted to described prime drive module；
The rated current that each described led carries is identical, and described threshold value is equal with the numerical value of the rated current of described led；
Described programmable gate array is adjusted according to the driving current value that comparative result exports to described prime drive module
Whole specifically include:
If comparative result is unequal, damage in the led described at least two that described programmable gate array determination drives
Bad led；
Described programmable gate array determines in drive according to the current value of the described led receiving from described prime drive module
In led described in dynamic at least two damage described led number, and according to damage described led number to described prime
The driving current value of drive module output is adjusted；
If described comparative result is equal, described programmable gate array determines the driving electricity of described prime drive module output
Flow valuve is maximum drive current value, all described led that described maximum drive current value is driven by described prime drive module
Rated current sum；
Described comparative result equal by: the current value of each described led that described prime drive module is driven is equal to threshold value.
2. method according to claim 1 is it is characterised in that described programmable gate array is according to damage
That the driving current value that the number of led exports to described prime drive module is adjusted particularly as follows:
The driving current value that described prime drive module exports is deducted the electric current of specified quantity by described programmable gate array
Value, obtains the driving current value after described adjustment, the current value of described specified quantity is that the number of the described led of damage is multiplied by institute
State the rated current of led；
The driving electricity that described programmable gate array exports to described prime drive module according to the number of the described led damaging
Flow valuve be adjusted after step particularly as follows: described programmable gate array by described adjustment after driving current value transmission
To described prime drive module.
3. a kind of prime drive module is it is characterised in that described prime drive module includes:
Driver element, for driving at least two light emitting diode led；
Detector unit, for detecting to the current value of the described led that described prime drive module is driven, at least two institutes
State each described led in led parallel with one another；
Output unit, for transmitting to programmable gate array the current value of each the described led detecting so that can compile
Journey logic gate array is according to the drive of the current value of the described led of each detecting and prime drive module output described in adjusting thresholds
Galvanic electricity flow valuve；
Input block, for receiving the driving current value after the adjustment that described programmable gate array transmits, and to driving
Driving current value after the described adjustment of led output described at least two；
Described input block, before the driving current value after the adjustment receiving described programmable gate array, also includes:
The current value of each the described led receiving is compared by described programmable gate array with threshold value；
Described programmable gate array is adjusted according to the driving current value that comparative result exports to described prime drive module
Whole, and the driving current value after described adjustment is transmitted to described prime drive module；
The rated current that each described led carries is identical, and described threshold value is equal with the numerical value of the rated current of described led；
Described programmable gate array is adjusted according to the driving current value that comparative result exports to described prime drive module
Whole specifically includes:
If comparative result is unequal, damage in the led described at least two that described programmable gate array determination drives
Bad led；
Described programmable gate array determines in drive according to the current value of the described led receiving from described prime drive module
In led described in dynamic at least two damage described led number, and according to damage described led number to described prime
The driving current value of drive module output is adjusted；
If described comparative result is equal, described programmable gate array determines the driving electricity of described prime drive module output
Flow valuve is maximum drive current value, all described led that described maximum drive current value is driven by described prime drive module
Rated current sum；
Described comparative result equal by: the current value of each described led that described prime drive module is driven is equal to threshold value.
4. a kind of electric current adjustment system is it is characterised in that described system includes:
At least two led and programmable gate array that at least one prime drive module, described prime drive module drive,
In led described at least two, each described led is parallel with one another；
Described prime drive module, for detecting to the current value of the described led that described prime drive module is driven, and
The current value of the described led detecting is transmitted to described programmable gate array；
Described programmable gate array, before described in the current value according to each the described led detecting and adjusting thresholds
The driving current value of level drive module output；
Described prime drive module, is additionally operable to receive the driving current value after the adjustment of described programmable gate array transmission,
And to the driving current value after the described adjustment of the output of led described at least two driving；
Before driving current value after the adjustment of the described programmable gate array of described reception, also include:
The current value of each the described led receiving is compared by described programmable gate array with threshold value；
Described programmable gate array is adjusted according to the driving current value that comparative result exports to described prime drive module
Whole, and the driving current value after described adjustment is transmitted to described prime drive module；
The rated current that each described led carries is identical, and described threshold value is equal with the numerical value of the rated current of described led；
Described programmable gate array is adjusted according to the driving current value that comparative result exports to described prime drive module
Whole specifically include:
If comparative result is unequal, damage in the led described at least two that described programmable gate array determination drives
Bad led；
Described programmable gate array determines in drive according to the current value of the described led receiving from described prime drive module
In led described in dynamic at least two damage described led number, and according to damage described led number to described prime
The driving current value of drive module output is adjusted；
If described comparative result is equal, described programmable gate array determines the driving electricity of described prime drive module output
Flow valuve is maximum drive current value, all described led that described maximum drive current value is driven by described prime drive module
Rated current sum；
Described comparative result equal by: the current value of each described led that described prime drive module is driven is equal to threshold value.
5. system according to claim 4 it is characterised in that
Described programmable gate array, is additionally operable to for the driving current value of described prime drive module output to deduct specified quantity
Current value, obtain the driving current value after described adjustment, the current value of described specified quantity is the number of the described led damaging
It is multiplied by the rated current of described led；
Described programmable gate array, is additionally operable to transmit the driving current value after described adjustment driving mould to described prime
Block.
6. a kind of programmable gate array is it is characterised in that described programmable gate array includes:
Input block, for receiving the current value of the light emitting diode led of prime drive module transmission, led described at least two
Driven by described prime drive module, in led described at least two, each described led is parallel with one another；
Logical block, for defeated according to the current value of each described led receiving and prime drive module described in adjusting thresholds
The driving current value going out；
Output unit, for transmitting to described prime drive module the driving current value after adjustment so that described prime drives
Module is to the driving current value after the described adjustment of the output of led described at least two driving；
Described by adjustment after driving current value transmit to described prime drive module so that described prime drive module is to driving
Led described at least two output described adjustment after driving current value before, also include:
The current value of each the described led receiving is compared by logical block with threshold value；
Be adjusted according to the driving current value that comparative result exports to described prime drive module, and by described adjustment after drive
Galvanic electricity value. transfer is to described prime drive module；
The rated current that each described led carries is identical, and described threshold value is equal with the numerical value of the rated current of described led；
Wherein logical block according to the driving current value that comparative result exports to described prime drive module be adjusted concrete
Including:
If comparative result is unequal it is determined that the led that is damaged in the led described at least two that drives；
Current value according to the described led receiving from described prime drive module determines in the led described at least two driving
The number of the described led of middle damage, and the driving electricity described prime drive module being exported according to the number of the described led damaging
Flow valuve is adjusted；
If described comparative result is equal, described programmable gate array determines the driving electricity of described prime drive module output
Flow valuve is maximum drive current value, all described led that described maximum drive current value is driven by described prime drive module
Rated current sum；
Described comparative result equal by: the current value of each described led that described prime drive module is driven is equal to threshold value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310724453.4A CN103646625B (en) | 2013-12-24 | 2013-12-24 | Current regulation method and system, pre-driver module and programmable logic gate array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310724453.4A CN103646625B (en) | 2013-12-24 | 2013-12-24 | Current regulation method and system, pre-driver module and programmable logic gate array |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103646625A CN103646625A (en) | 2014-03-19 |
| CN103646625B true CN103646625B (en) | 2017-02-01 |
Family
ID=50251829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310724453.4A Expired - Fee Related CN103646625B (en) | 2013-12-24 | 2013-12-24 | Current regulation method and system, pre-driver module and programmable logic gate array |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103646625B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109412110B (en) * | 2018-11-09 | 2020-04-07 | 天津航空机电有限公司 | Method for SSPC (single phase conductor) rated current downward continuous programming |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1591109A (en) * | 2003-10-28 | 2005-03-09 | 友达光电股份有限公司 | Method and apparatus for controlling driving current of light source in display system |
| CN101841961A (en) * | 2010-05-19 | 2010-09-22 | 北京中庆微数字设备开发有限公司 | LED control device with current and temperature monitoring function |
| CN102036444A (en) * | 2010-10-15 | 2011-04-27 | 深圳市中庆微科技开发有限公司 | Method and device for removing current failure of LED lamp points |
| CN102480821A (en) * | 2010-11-22 | 2012-05-30 | 意法半导体研发(深圳)有限公司 | System for reprogramming power parameters of light emitting diodes |
| CN102625550A (en) * | 2012-03-14 | 2012-08-01 | 江苏联星光电有限公司 | Fault-tolerant type high-power LED (Light Emitting Diode) lamp |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102036436A (en) * | 2009-09-30 | 2011-04-27 | 深圳市世纪新泰达电子有限公司 | Voltage-regulating current-limiting LED illumination device power supply |
| CN102123536B (en) * | 2010-01-12 | 2013-10-30 | 冠捷投资有限公司 | Light-emitting diode driving circuit |
| CN203352863U (en) * | 2013-04-23 | 2013-12-18 | 深圳市灵星雨科技开发有限公司 | New LED lighting system |
-
2013
- 2013-12-24 CN CN201310724453.4A patent/CN103646625B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1591109A (en) * | 2003-10-28 | 2005-03-09 | 友达光电股份有限公司 | Method and apparatus for controlling driving current of light source in display system |
| CN101841961A (en) * | 2010-05-19 | 2010-09-22 | 北京中庆微数字设备开发有限公司 | LED control device with current and temperature monitoring function |
| CN102036444A (en) * | 2010-10-15 | 2011-04-27 | 深圳市中庆微科技开发有限公司 | Method and device for removing current failure of LED lamp points |
| CN102480821A (en) * | 2010-11-22 | 2012-05-30 | 意法半导体研发(深圳)有限公司 | System for reprogramming power parameters of light emitting diodes |
| CN102625550A (en) * | 2012-03-14 | 2012-08-01 | 江苏联星光电有限公司 | Fault-tolerant type high-power LED (Light Emitting Diode) lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103646625A (en) | 2014-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105162517B (en) | Visible light communication method and its visible light communication system based on pulse amplitude regulation and control | |
| CN101169920B (en) | Display apparatus and control method thereof | |
| CN106101591B (en) | The method of adjustment of LCD TV and its backlight driving voltage, device | |
| CN104038288A (en) | Visible light communication system based on natural light communication | |
| CN107835543A (en) | Detection circuit, chip and the method for controllable silicon dimmer, LED drive chip and system | |
| CN206803072U (en) | A kind of high-accuracy Multifunctional LED constant-current type digital remote light source controller | |
| CN102780528A (en) | System for identifying ID (identity) information of lamp by white light of LED (light-emitting diode) | |
| CN106304518A (en) | A kind of regulate LED colour temperature or the control circuit of brightness and method | |
| CN105577286A (en) | Transmitting device and method for driving LED automotive lamp optical communication | |
| CN103646625B (en) | Current regulation method and system, pre-driver module and programmable logic gate array | |
| CN111010767B (en) | Hybrid dimming driving circuit and method for detecting LED current and dimming by using same | |
| CN204156868U (en) | A kind of emitter of driving LED car light communication | |
| CN105007123B (en) | A kind of optical module light eye pattern ER controls to adjust method and system | |
| CN103021337A (en) | Light-emitting diode (LED) display device with brightness adjusting device | |
| CN105572821A (en) | Low-rate double-emission SFP optical module | |
| CN103917022B (en) | LED lamp control and adjusting method based on electronic switching tube power line carrier | |
| CN205946293U (en) | Light source controller with blast stroboscopic function | |
| CN106507544A (en) | A kind of LED lamplight brightness adjusting method and device | |
| CN102186288B (en) | Intelligent LED (Light Emitting Diode) driving chip | |
| CN102430496A (en) | Light emitting diode (LED) powder spotting system and LED powder spotting method | |
| CN209390434U (en) | It is a kind of to promote voltage to transmit the application circuit of signal | |
| CN206181466U (en) | High -speed photoelectricity door luminous intensity adaptive control circuit | |
| CN211321572U (en) | Hybrid dimming driving circuit | |
| CN102802320A (en) | Digital LED (Light-Emitting Diode) light source controller facing machine vision | |
| CN102858054B (en) | Solid luminous device, solid luminescent light source, lighting device and control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Kezhu road high tech Industrial Development Zone, Guangzhou city of Guangdong Province, No. 233 510670 Patentee after: VTRON GROUP Co.,Ltd. Address before: 510663 Guangzhou province high tech Industrial Development Zone, Guangdong, Cai road, No. 6, No. Patentee before: VTRON TECHNOLOGIES Ltd. |
|
| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170201 Termination date: 20211224 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |