CN204859686U - LED lamp with adjustable luminance - Google Patents
LED lamp with adjustable luminance Download PDFInfo
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- CN204859686U CN204859686U CN201520594550.0U CN201520594550U CN204859686U CN 204859686 U CN204859686 U CN 204859686U CN 201520594550 U CN201520594550 U CN 201520594550U CN 204859686 U CN204859686 U CN 204859686U
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- 238000001514 detection method Methods 0.000 claims abstract description 26
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 19
- 239000011324 bead Substances 0.000 claims description 21
- 230000001105 regulatory effect Effects 0.000 claims description 21
- 230000006837 decompression Effects 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000036772 blood pressure Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model relates to a LED lamp with adjustable luminance includes rectifier circuit, a constant current control circuit, disconnected electrical detection circuitry and LED lamp pearl, external alternate current power supply passes through switch and inputs rectifier circuit with the alternating current, rectifier circuit inputs constant current control circuit and disconnected electrical detection circuitry with rectified alternating current, longly during the break -make of disconnected electrical detection circuitry through detecting switch produce the adjustting of the lighteness signal and with adjustting of the lighteness signal input constant current control circuit, the electric current of LED lamp pearl is crossed to constant current control circuit control flow. Disconnected electrical detection circuitry includes bleeder circuit, step -down voltage stabilizing circuit and main control chip, and bleeder circuit and step -down voltage stabilizing circuit's input all is connected with rectifier circuit's output, and bleeder circuit and step -down voltage stabilizing circuit's output all is connected with main control chip, and main control chip's output is connected with constant current bleeder circuit 1's bleeder circuit 2 input. The beneficial effects of the utility model are that: low in manufacturing cost and not increase use cost, simple structure, practicality strong.
Description
Technical field
The utility model belongs to field of illuminating lamps, is specifically related to the adjustable LED of a kind of brightness.
Background technology
LED becomes current people the most frequently used one of illumination and decorative lamp due to the advantage of its efficient energy-saving.Compared with conventional light source, the LED life-span is long, and under same power the illuminating effect of LED more energy-conservation than traditional light source more than 80%.LED is widely used in various both privately and publicly owned place.At present, market has had the LED that much can regulate light, its main light modulation form comprises: intelligent APP light modulation, silicon controlled dimmer for light control, special dimming power source light modulation etc.But the manufacturing cost that these dimming modes have is higher, even need configure dedicated communication control platform, use cost significantly rises, and operates also more complicated.What have needs replacing active device, thus produces new waste of material problem, deviates from the development principle of energy-saving and emission-reduction.The problems referred to above also become the key factor hindering light modulation class LED product universal.
Utility model content
For the problems referred to above, the purpose of this utility model is to provide a kind of low cost of manufacture and does not increase the adjustable LED of brightness of use cost.
For achieving the above object, the utility model takes following technical scheme: the adjustable LED of a kind of brightness comprises rectification circuit, constant-current control circuit, power failure detection circuit and LED lamp bead, alternating current is inputted described rectification circuit by mains switch by external ac power source, Rectified alternating current is inputted described constant-current control circuit and power failure detection circuit by described rectification circuit, described power failure detection circuit produces brightness regulated signal and brightness regulated signal is inputted described constant-current control circuit, described constant-current control circuit controls the electric current flowing through described LED lamp bead, lightening LED lamp pearl.
Further, described power failure detection circuit comprises bleeder circuit, decompression voltage regulator and main control chip, described bleeder circuit is all connected with the output of described rectification circuit with the input of decompression voltage regulator, described bleeder circuit is all connected with described main control chip with the output of decompression voltage regulator, and the output of described main control chip is connected with the Current Control input of described constant-current control circuit.
Preferably, described power failure detection circuit comprises single-chip microcomputer, first to fourth resistance, voltage stabilizing didoe and electric capacity, one end of described first resistance is connected with the output of described rectification circuit, its other end is connected with one end of described second resistance and certain input/output port of described single-chip microcomputer such as P2.0 port, the other end ground connection of described second resistance; One end of described 3rd resistance is connected with the output of described rectification circuit, its other end is connected with the negative pole of described voltage stabilizing didoe and the vdd terminal of described single-chip microcomputer, the plus earth of described voltage stabilizing didoe, described Capacitance parallel connection is at the two ends of described voltage stabilizing didoe; Another input/output port of described single-chip microcomputer as P1.2 port by as described in the 4th resistance with as described in the input of constant-current control circuit be connected.
Further, be also provided with a LDO low pressure difference linear voltage regulator in described power failure detection circuit, the input of described LDO low pressure difference linear voltage regulator is connected with the negative pole of described voltage stabilizing didoe, and its output is connected with the vdd terminal of described single-chip microcomputer, its ground end ground connection.
The utility model is owing to taking above technical scheme, it has the following advantages: because the utility model arranges a power failure detection circuit in the circuit of existing LED, the brightness regulated signal input constant-current control circuit that power failure detection circuit produces, constant-current control circuit controls according to brightness regulated signal the electric current flowing through LED lamp bead, the utility model carries out simple modifications to available circuit, just can be regulated the brightness of LED lamp bead by the switch motion of mains switch, therefore the utility model has the low advantage of manufacturing cost and use cost.
Accompanying drawing explanation
Fig. 1 is the connection status schematic diagram of the adjustable LED of the utility model brightness and external ac power source and mains switch;
Fig. 2 is the circuit diagram of power failure detection circuit.
In figure: 1, rectification circuit; 2, constant-current control circuit; 3, power failure detection circuit; 4, LED lamp bead; 10, AC power; 20, mains switch; 31, bleeder circuit; 32, decompression voltage regulator; 33, single-chip microcomputer.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
As shown in Figure 1, the adjustable LED of the utility model brightness comprises rectification circuit 1, constant-current control circuit 2, power failure detection circuit 3 and LED lamp bead 4.External ac power source 10 by alternating current input rectification circuit 1, obtains Rectified alternating current after the alternating current of rectification circuit 1 to input carries out rectification by mains switch 20.Rectified alternating current input constant-current control circuit 2 and power failure detection circuit 3, power failure detection circuit 3 produces brightness regulated signal according to the on off operating mode signal of the voltage of input, brightness regulated signal input constant-current control circuit 2, constant-current control circuit 2 controls according to the brightness regulated signal received the electric current flowing through LED lamp bead 4, thus regulates the brightness of LED lamp bead 4.
In a preferred embodiment, as shown in Figure 1, power failure detection circuit 3 comprises bleeder circuit 31, decompression voltage regulator 32 and main control chip 33.Wherein, bleeder circuit 31 is all connected with the output of rectification circuit 1 with the input of decompression voltage regulator 32, bleeder circuit 31 is all connected with main control chip 33 with the output of decompression voltage regulator 32, and the output of main control chip 33 is connected with the Current Control input of constant-current control circuit 2.The AC rectification of input is become Rectified alternating current by rectification circuit 1, and Rectified alternating current is inputted bleeder circuit 31 and decompression voltage regulator 32, bleeder circuit 31 inputs in main control chip 33 after the Rectified alternating current of input is carried out dividing potential drop, main control chip 33 reads the power supply state of bleeder circuit 31 output voltage, decompression voltage regulator 32 is powered for main control chip 33 after the Rectified alternating current of input is carried out lowering and stabilizing blood pressure, main control chip 33 is according to the power supply state output brightness conditioning signal read, and brightness regulated signal inputs in constant-current control circuit 2.
In a preferred embodiment, as shown in Figure 2, power failure detection circuit 3 comprises single-chip microcomputer U1, first to fourth resistance R1 ~ R4, voltage stabilizing didoe D1, the first electric capacity C1 and the second electric capacity C2.Wherein, one end of first resistance R1 is connected with the output of rectification circuit 1, its other end is connected with one end of the second resistance R2 and an input/output port of single-chip microcomputer U1 such as P2.0 port, the other end ground connection of the second resistance R2, second electric capacity C2 is connected in parallel on the two ends of the second resistance R2, second electric capacity C2 plays Anti-Jamming, prevents the misoperation of single-chip microcomputer U1.One end of 3rd resistance R3 is connected with the output of rectification circuit 1, its other end is connected with the negative pole of voltage stabilizing didoe D1 and the vdd terminal of single-chip microcomputer U1, the plus earth of voltage stabilizing didoe D1, the first electric capacity C1 is connected in parallel on the two ends of voltage stabilizing didoe D1, plays accumulate effect.Another input/output port such as P1.2 end of single-chip microcomputer U1 is connected with the Current Control input of constant-current control circuit 2 by the 4th resistance R4.
The P2.0 port of single-chip microcomputer U1 reads power supply state information, according to different power supply state information, the P1.2 port of single-chip microcomputer U1 exports different brightness regulated signals, constant-current control circuit 2 controls according to the different brightness regulated signal that the P1.2 port of single-chip microcomputer U1 generates the electric current flowing through LED lamp bead 4, makes LED lamp bead 4 maintain different luminance states.Be illustrated below:
When mains switch 20 is in on-state, the P2.0 port of single-chip microcomputer U1 reads the high level of the bleeder circuit output that the first resistance R1, the second resistance R2 and the second electric capacity C2 are formed, the P1.2 port of single-chip microcomputer U1 exports initial value first brightness regulated signal, constant-current control circuit 2 controls according to the first brightness regulated signal that the P1.2 port of single-chip microcomputer U1 generates the electric current flowing through LED lamp bead 4, makes LED lamp bead 4 maintain the first luminance state.
When mains switch 20 closes a short time t, because single-chip microcomputer U1 is in low power consumpting state, so the accumulate electricity of electric capacity C1 can maintain the longer time, single-chip microcomputer U1 still can continue normal work in the short time t that power supply is cut off, the output voltage of rectification circuit 1 reduces rapidly along with the closedown of mains switch 20, power supply state is short time off-position, the P2.0 port of single-chip microcomputer U1 reads the first resistance R1, the duration that the bleeder circuit that second resistance R2 and the second electric capacity C2 is formed exports is close to the low level of t, the second brightness regulated signal is generated at P1.2 port.At the end of mains switch 20 closes short time t, power supply state recovers, and constant-current control circuit 2 controls according to the second brightness regulated signal that the P1.2 port of single-chip microcomputer U1 generates the electric current flowing through LED lamp bead 4, makes LED lamp bead 4 maintain the second luminance state.Repeat above mains switch 20 short time t closing motion, more brightness value can be realized.
When the long-time T of mains switch 20 closes and the accumulate electricity of electric capacity C1 is enough to the normal work maintaining single-chip microcomputer U1, the long-time T off-position information that single-chip microcomputer U1 reads according to P2.0 port, generates initial value first brightness regulated signal at P1.2 port.Constant-current control circuit 2 controls according to the first brightness regulated signal that the P1.2 port of single-chip microcomputer U1 generates the electric current flowing through LED lamp bead 4, makes LED lamp bead 4 maintain the first luminance state, namely recovers original intensity state.
When the long-time T of mains switch 20 closes and the accumulate electricity of electric capacity C1 is not enough to the normal work maintaining single-chip microcomputer U1, single-chip microcomputer U1 is out of service.When mains switch 20 again connect restore electricity time, single-chip microcomputer U1 is in original operating state, generates initial value first brightness regulated signal at P1.2 port.Constant-current control circuit 2 controls according to the first brightness regulated signal that the P1.2 port of single-chip microcomputer U1 generates the electric current flowing through LED lamp bead 4, LED lamp bead 4 is made to maintain the first luminance state, namely mains switch 20 exceeds each switch of long-time T, and the brightness of LED lamp bead 4 all can remain on initial value brightness.
In a preferred embodiment, as shown in Figure 2, for stablizing the input voltage of single-chip microcomputer U1 further, a LDO low pressure difference linear voltage regulator U2 in power failure detection circuit 3, is also provided with.The input of LDO low pressure difference linear voltage regulator U2 is connected with the negative pole of voltage stabilizing didoe, and its output is connected with the vdd terminal of single-chip microcomputer, its ground end ground connection.
The utility model is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present utility model; no matter but any change is done in its shape or structure; every have identical with the application or akin technical scheme, all drops within protection range of the present utility model.
Claims (4)
1. the adjustable LED of brightness, it is characterized in that: it comprises rectification circuit, constant-current control circuit, power failure detection circuit and LED lamp bead, alternating current is inputted described rectification circuit by mains switch by external ac power source, Rectified alternating current is inputted described constant-current control circuit and power failure detection circuit by described rectification circuit, described power failure detection circuit produces brightness regulated signal and brightness regulated signal is inputted described constant-current control circuit, and described constant-current control circuit controls the electric current flowing through described LED lamp bead.
2. the adjustable LED of a kind of brightness as claimed in claim 1, it is characterized in that: described power failure detection circuit comprises bleeder circuit, decompression voltage regulator and main control chip, described bleeder circuit is all connected with the output of described rectification circuit with the input of decompression voltage regulator, described bleeder circuit is all connected with described main control chip with the output of decompression voltage regulator, and the output of described main control chip is connected with the Current Control input of described constant-current control circuit.
3. the adjustable LED of a kind of brightness as claimed in claim 2, it is characterized in that: described power failure detection circuit comprises single-chip microcomputer, first to fourth resistance, voltage stabilizing didoe, the first electric capacity and the second electric capacity, one end of described first resistance is connected with the output of described rectification circuit, its other end is connected with one end of described second resistance and an input/output port of described single-chip microcomputer, the other end ground connection of described second resistance, described second Capacitance parallel connection is at the two ends of described second resistance; One end of described 3rd resistance is connected with the output of described rectification circuit, its other end is connected with the negative pole of described voltage stabilizing didoe and the vdd terminal of described single-chip microcomputer, the plus earth of described voltage stabilizing didoe, described first Capacitance parallel connection is at the two ends of described voltage stabilizing didoe; Another input/output port of described single-chip microcomputer is connected with the Current Control input of described constant-current control circuit by described 4th resistance.
4. the adjustable LED of a kind of brightness as claimed in claim 3, it is characterized in that: in described power failure detection circuit, be also provided with a LDO low pressure difference linear voltage regulator, the input of described LDO low pressure difference linear voltage regulator is connected with the negative pole of described voltage stabilizing didoe, its output is connected with the vdd terminal of described single-chip microcomputer, its ground end ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520594550.0U CN204859686U (en) | 2015-08-03 | 2015-08-03 | LED lamp with adjustable luminance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520594550.0U CN204859686U (en) | 2015-08-03 | 2015-08-03 | LED lamp with adjustable luminance |
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| Publication Number | Publication Date |
|---|---|
| CN204859686U true CN204859686U (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520594550.0U Expired - Fee Related CN204859686U (en) | 2015-08-03 | 2015-08-03 | LED lamp with adjustable luminance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204859686U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106354075A (en) * | 2016-11-25 | 2017-01-25 | 北京意同创科技有限公司 | Remote controller control circuit with backlight screen |
| CN109842985A (en) * | 2018-04-26 | 2019-06-04 | 青岛亿联客信息技术有限公司 | A kind of intelligent lighting control system and its flash switch detection circuit |
| CN109963395A (en) * | 2018-10-12 | 2019-07-02 | 青岛亿联客信息技术有限公司 | a control device |
-
2015
- 2015-08-03 CN CN201520594550.0U patent/CN204859686U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106354075A (en) * | 2016-11-25 | 2017-01-25 | 北京意同创科技有限公司 | Remote controller control circuit with backlight screen |
| CN106354075B (en) * | 2016-11-25 | 2020-01-21 | 北京意同创科技有限公司 | Remote controller control circuit with backlight screen |
| CN109842985A (en) * | 2018-04-26 | 2019-06-04 | 青岛亿联客信息技术有限公司 | A kind of intelligent lighting control system and its flash switch detection circuit |
| CN109842985B (en) * | 2018-04-26 | 2024-12-03 | 青岛亿联客信息技术有限公司 | An intelligent lighting control system and its flash switch detection circuit |
| CN109963395A (en) * | 2018-10-12 | 2019-07-02 | 青岛亿联客信息技术有限公司 | a control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20170803 |
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| CF01 | Termination of patent right due to non-payment of annual fee |