CN206908903U - A kind of LED control system - Google Patents
A kind of LED control system Download PDFInfo
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- CN206908903U CN206908903U CN201720529130.3U CN201720529130U CN206908903U CN 206908903 U CN206908903 U CN 206908903U CN 201720529130 U CN201720529130 U CN 201720529130U CN 206908903 U CN206908903 U CN 206908903U
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- module
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- voltage
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Abstract
The utility model discloses a kind of LED control system, including rectification module, LED module, LED switch, current limliting module, voltage detection module, lamp pressure adjusting switch.The rectification module, LED module, LED switch, lamp pressure adjusting switch are sequentially connected.And the rectification module is switched with the LED respectively by the current limliting module, voltage detection module is connected.The voltage detection module and with the lamp pressure adjusting switch be connected.The system and by the voltage of voltage detection module detecting system, then presses adjusting switch to be controlled on lamp, so as to ensure the stabilization of system voltage, avoids the generation of overpressure situation by voltage detection module.
Description
Technical field
It the utility model is related to LED technical field, more particularly to a kind of LED control system.
Background technology
In LED lamp industry, existing LED control system type of drive the most universal is additional AC-DC power supplys.So
And this mode make it that light fixture space-consuming is big, cost is high.Also, existing LED control system spread of voltage, easily production
Life is over-pressed and damages.In addition, the LED module of existing LED control system is made up of multichannel LED string parallel with one another,
Light emitting diode in certain paths of LEDs lamp string breaks down after generation open circuit, and the paths of LEDs lamp string will be extinguished, and influence to illuminate.It is and existing
The brightness of LED module is easily disturbed, and electric current is unstable, non-uniform light.
The content of the invention
In view of the shortcomings of the prior art, the utility model proposes a kind of LED control system, (1) system and pass through
The voltage of voltage detection module detecting system, then press adjusting switch to be controlled on lamp by voltage detection module, solve
Existing system spread of voltage, is also easy to produce overpressure problems.(2) system integration has rectification module, is directly by AC conversion
Direct current, solve the problems, such as that light fixture space-consuming is big, cost is high.(3) in the two paths of LED lamp string of the LED module of the system
Same one-level light emitting diode it is parallel with one another, when the light emitting diode on certain road occurs breaking, this breaks down luminous
Circuit where diode can obtain power supply on the way from order, solve existing LED string easily because of single impaired light-emitting diodes
The problem of managing and extinguishing.
To achieve these goals, technical solutions of the utility model are as follows：
A kind of LED control system, including rectification module, LED module, LED switch, current limliting module, voltage detecting mould
Block, lamp pressure adjusting switch.The rectification module, LED module, LED switch, lamp pressure adjusting switch are sequentially connected.And institute
Rectification module is stated by the current limliting module respectively with LED switch, voltage detection module to be connected.The voltage detecting
Module and with the lamp pressure adjusting switch be connected.Civil power is changed into direct current by the rectification module.The current limliting module
Current limliting is carried out to the direct current of rectification module output, provides tested voltage for the voltage detection module, and be the LED
Lamp switch provides driving voltage；The voltage detection module samples to tested voltage, and according to controlling sampled voltage
Lamp presses adjusting switch, and then adjusts the size of the rectification module output voltage.
Further, the rectification module includes rectifier bridge U1, diode D1, variable resistor R1.Variable resistor R1 is in parallel
In rectifier bridge U1 two inputs.Rectifier bridge U1 positive output end is connected with current limliting module, and by diode D1 with
LED module is connected.
Further, the LED switch includes resistance R2, R3, R4, N-channel mos pipes Q2.The current limliting module it is defeated
Go out end by resistance R2, R3 with N-channel mos pipes Q2 grid to be connected；The output end of the LED module by resistance R4 with
N-channel mos pipes Q2 drain electrode is connected；N-channel mos pipes Q2 source electrode is connected with the input of lamp pressure adjusting switch.
Further, the lamp pressure adjusting switch includes resistance R5, R6, R7, N-channel mos pipes Q1.The voltage detecting mould
The output end of block is connected by resistance R5 with N-channel mos pipes Q1 grid；The output end and N ditches of the LED switch
Road mos pipes Q1 drain electrode is connected；N-channel mos pipes Q1 source electrode is grounded by resistance R6, R7 respectively.
Further, the LED string that LED module includes current detecting chip U3, two-way is in parallel.Per paths of LEDs lamp string
Include the light emitting diode of some series connection.It is identical per the light emitting diode number in paths of LEDs lamp string.Per the negative pole of paths of LEDs lamp string
The resistance R11 that metering function has been passed through at end respectively is connected with the input of LED switch 3.It is and same in two paths of LED lamp string
It is parallel with one another one by one between the light emitting diode of level.Current detecting chip U3 positive and negative input is connected on the two of LED string respectively
End.Current detecting chip U3 output end is connected with resistance R11 output end.Current detecting chip U3 passes through positive and negative input
End samples to flowing through the electric current on LED string, and the electric current flowed through by adjusting current detecting chip U3 output end
Size is stable to cause the electric current holding on LED string.
The beneficial effects of the utility model：
(1) system and by the voltage of voltage detection module detecting system, then by voltage detection module to lamp
Pressure adjusting switch is controlled, and so as to ensure the stabilization of system voltage, avoids the generation of overpressure situation.
(2) system integration has rectification module, is direct current directly by AC conversion, reduces light fixture space, reduces
Cost.
(3) light emitting diode of the same one-level in the two paths of LED lamp string of the LED module of the system is parallel with one another, at certain
When light emitting diode on road occurs breaking, the circuit where the light emitting diode to break down can obtain electricity on the way from order
Source, normal luminous.And current detecting chip U3 is parallel with LED string, it can detect and adjust the electric current on LED string, from
And it is uniform and stable make it that LED module lights.
(4) circuit system is simple in construction, and peripheral component is less, and reliability is high, and cost is low, is adapted to great power LED to shine
Bright driving.
Brief description of the drawings
Fig. 1 is circuit theory block schematic diagram of the present utility model.
Fig. 2 is circuit theory schematic diagram of the present utility model.
Fig. 3 is the circuit theory schematic diagram of LED module 2 in Fig. 1, Fig. 2.
Wherein, Fig. 1 to Fig. 2 reference is：Rectification module 1, LED module 2, LED switch 3, current limliting module 4,
Voltage detection module 5, lamp pressure adjusting switch 6.
Embodiment
With reference to the accompanying drawings and examples, the utility model is expanded on further.
As shown in figure 1, a kind of LED control system, including rectification module 1, LED module 2, LED switch 3, current limliting mould
Block 4, voltage detection module 5, lamp pressure adjusting switch 6.Rectification module 1, LED module 2, LED switch 3, lamp pressure adjusting switch 6
It is sequentially connected.And rectification module 1 is connected with LED switch 3, voltage detection module 5 respectively by current limliting module 4；Voltage
Detection module 5 and with lamp pressure adjusting switch 6 be connected.
Civil power is changed into direct current by rectification module 1.The direct current that current limliting module 4 exports to rectification module 1 carries out current limliting,
Tested voltage is provided for voltage detection module 5, and driving voltage is provided for LED switch 3 so that the conducting of LED switch 3.Electricity
Pressure detection module 5 samples to tested voltage, then controls lamp pressure adjusting switch 6 according to sampled voltage, adjusts rectification in real time
The size of the output voltage of module 1 so that system working stability.
Specifically, rectification module 1 includes rectifier bridge U1, diode D1, variable resistor R1, fuse F1.Variable resistor R1 is simultaneously
It is associated in rectifier bridge U1 two inputs.Rectifier bridge U1 positive output end is connected with current limliting module 4, and passes through diode D1
It is connected with LED module 2.Variable resistor R1 is used to prevent mutation current from causing damage to system.Diode D1 is used to control
Sense of current.
LED module 2 can have multiple, and multiple LED modules 2 are serially connected.
As shown in figure 3, the LED string that LED module 2 includes current detecting chip U3, two-way is in parallel.Per paths of LEDs lamp
String includes the light emitting diode of some series connection.It is identical per the light emitting diode number in paths of LEDs lamp string.Per the negative of paths of LEDs lamp string
The extreme resistance R11 for having passed through metering function respectively is connected with the input of LED switch 3.Resistance R12 and resistance R11 phases
It is in parallel.And it is parallel with one another one by one between the light emitting diode at the same level in two paths of LED lamp string, so all the way on LED string
Light emitting diode break down in the case of disconnection, the circuit where the light emitting diode to break down can obtain electricity on the way from order
Source, it is unaffected.
Specifically, as shown in Fig. 2 first via LED string include be sequentially connected in series light emitting diode L29, L31, L33,
L35；Second paths of LEDs lamp string includes light emitting diode L30, L32, L34, the L36 being sequentially connected in series.Also, two paths of LED lamp string is each
Light emitting diode in level is parallel with one another.
Current detecting chip U3 positive and negative input is connected on the both ends of LED string respectively.Current detecting chip U3 output
End (V-) is connected with resistance R11 output end.Current detecting chip U3 is by positive and negative input to flowing through on LED string
Electric current is sampled, and by adjusting size of current that current detecting chip U3 output end (V-) flows through come LED
Electric current on string keeps stable, so as to ensure the stable luminescence of LED module 2.Current detecting chip U3 is by the electric current of sampling and one
A reference value is compared, and when the electric current of sampling is more than a reference value, the electric current that current detecting chip U3 positive input terminals flow into can be with
Larger electric current flows out from current detecting chip U3 output end (V-), so as to reduce the electric current of LED string；When the electric current of sampling
During less than a reference value, the electric current that current detecting chip U3 positive input terminals flow into can be with less electric current from current detecting chip U3
Output end (V-) flows out, so as to improve the electric current of LED string.
LED switch 3 includes resistance R2, R3, R4, R10, N-channel mos pipes Q2.The output end of current limliting module 4 passes through resistance
R2, R3 are connected with N-channel mos pipes Q2 grid；The output end of LED module 2 is by resistance R4 and N-channel mos pipes Q2's
Drain electrode is connected；N-channel mos pipes Q2 source electrode is connected with the input of lamp pressure adjusting switch 6；Resistance 10 is connected to N-channel
Between mos pipes Q2 grid and drain electrode.
The direct current that current limliting module 4 exports provides voltage for N-channel mos pipes Q2 grid so that N-channel mos pipes Q2 is led
It is logical, so that LED module 2 lights.
Voltage detection module 5 includes voltage checking chip K13 and its peripheral components.Voltage checking chip K13 voltage inspection
Survey the direct current that pin VH pin export to current limliting module 4 and carry out voltage sample, applied current is linear and voltage linear controls lamp pressure
Adjusting switch 6, the size of the voltage output of rectification module 1 is adjusted in real time.
Lamp pressure adjusting switch 6 includes resistance R5, R6, R7, N-channel mos pipes Q1.The output end of voltage detection module 5 is passed through
Resistance R5 is connected with N-channel mos pipes Q1 grid；The output end and N-channel mos pipes Q1 drain electrode phase of LED switch 3
Connection；N-channel mos pipes Q1 source electrode is grounded by resistance R6, R7 respectively.Voltage detection module 5 is by controlling N-channel mos to manage
Q1 open and close frequency and time, so as to adjust the voltage output of rectification module 1.
Above-described is only preferred embodiment of the present utility model, and the utility model is not limited to above example.Can
With understand, those skilled in the art directly export or associate on the premise of basic conception of the present utility model is not departed from its
It is improved and change is considered as being included within the scope of protection of the utility model.
Claims (3)
- A kind of 1. LED control system, it is characterised in that：Including rectification module, LED module, LED switch, current limliting module, voltage detection module, lamp pressure adjusting switch；The rectification module, LED module, LED switch, lamp pressure adjusting switch are sequentially connected；And the rectification module is switched with the LED respectively by the current limliting module, voltage detection module is connected；The voltage detection module and with the lamp pressure adjusting switch be connected；Civil power is changed into direct current by the rectification module；The direct current that the current limliting module exports to the rectification module carries out current limliting, is provided for the voltage detection module tested Voltage, and provide driving voltage for LED switch；The voltage detection module samples to tested voltage, and controls the lamp to press adjusting switch according to sampled voltage, enters And adjust the size of the rectification module output voltage.
- 2. LED control system according to claim 1, it is characterised in that：The LED switch includes resistance R2, R3, R4, N-channel mos pipes Q2；The output end of the current limliting module is connected by resistance R2, R3 with N-channel mos pipes Q2 grid；The LED module Output end be connected by resistance R4 with N-channel mos pipes Q2 drain electrode；N-channel mos pipes Q2 source electrode is adjusted with lamp pressure The input of switch is connected.
- 3. LED control system according to claim 1, it is characterised in that：The lamp pressure adjusting switch includes resistance R5, R6, R7, N-channel mos pipes Q1；The output end of the voltage detection module is connected by resistance R5 with N-channel mos pipes Q1 grid；The LED The output end of lamp switch is connected with N-channel mos pipes Q1 drain electrode；N-channel mos pipes Q1 source electrode passes through resistance R6, R7 respectively Ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720529130.3U CN206908903U (en) | 2017-05-13 | 2017-05-13 | A kind of LED control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720529130.3U CN206908903U (en) | 2017-05-13 | 2017-05-13 | A kind of LED control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206908903U true CN206908903U (en) | 2018-01-19 |
Family
ID=61288619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720529130.3U Expired - Fee Related CN206908903U (en) | 2017-05-13 | 2017-05-13 | A kind of LED control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206908903U (en) |
-
2017
- 2017-05-13 CN CN201720529130.3U patent/CN206908903U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180119 Termination date: 20200513 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |