CN202587469U - Light fixture switch control circuit - Google Patents
Light fixture switch control circuit Download PDFInfo
- Publication number
- CN202587469U CN202587469U CN 201220046815 CN201220046815U CN202587469U CN 202587469 U CN202587469 U CN 202587469U CN 201220046815 CN201220046815 CN 201220046815 CN 201220046815 U CN201220046815 U CN 201220046815U CN 202587469 U CN202587469 U CN 202587469U
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- control circuit
- circuit
- light fixture
- light
- switch control
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Abstract
The utility model discloses a light fixture switch control circuit, comprising an input end control circuit, a transformation control circuit, an output end control circuit and a switch control circuit connected with the transformation control circuit, wherein the output end of the switch control circuit is connected with a load through connecting an MOS tube, the output end control circuit is connected with the load through an LC filtering circuit, and the switch control circuit comprises an MCU main controller for controlling PWM generation of the MOS tube. In order to alleviate the influence on human eyes caused by the sudden change of a strong light in a dark environment, the main controller changes the average current of the light fixture through changing PWM duty ratio when processing a light fixture switch, such that when the light fixture switch is switched on, the light of the light fixture is gradually from dim to bright, and when the light fixture switch is closed, the light of the light fixture is gradually from bright to dim. Therefore, human eyes can rapidly adapt to the light change of the light fixture, and additionally, the light fixture switch control circuit can be used in places which need special light to be from dim to bright or from bright to dim.
Description
Technical field:
The utility model relates to the switching technique field, refers in particular to a kind ofly to realize that light is gradually bright and the lamp switch control circuit of the effect of gradually going out.
Background technology:
The word explanation of switch is opening and closing, and it is meant that also one can make open circuit, makes current interruptions or make it flow to the electronic component of other circuit.Modal switch is the electromechanical equipment that lets the people operate, and one or several electronic contacts are wherein arranged, and " closure " of contact (closed) represented the electronic contact conducting to allow electric current to flow through; " open circuit " of switch (open) representes that not conducting of electronic contact forms open circuit, does not allow electric current to flow through.
Traditional lamp switch control circuit generally all is to realize single switching function, when promptly pressing switch, and circuit communication; Electric current is flow through, and light fixture is lighted at once, thereby realizes opening the purpose of light fixture; When pressing switch once more, switch is upspring, and forms open circuit; Do not allow electric current to flow through, light fixture extinguishes at once, thereby realizes closing the purpose of light fixture.Though this lamp switch control circuit can be realized controlling the purpose that light fixture is lighted and extinguished, and exists some shortcomings: when pressing switch, light fixture is lighted at once or is extinguished; For some special light fixtures; It can not be lighted or extinguished moment, not so be easy to damage, and the light of light fixture is by secretly become the brightest or become the darkest by the brightest quickly quickly; Can make proper manners be difficult to adapt to like this, make people receive great puzzlement; In addition, for some special lamplight scenes, light fixture need reach the lighting effects of being lighted or extinguishing gradually gradually, and traditional lamp switch control circuit all is difficult to realize.
The utility model content:
The purpose of the utility model is to overcome the deficiency of prior art, carries a kind ofly realizing that light is gradually bright and the lamp switch control circuit of the effect of gradually going out.
In order to solve the problems of the technologies described above; The utility model has adopted following technical proposals: a kind of lamp switch control circuit, and this lamp switch control circuit comprises: input control circuit, transformation control circuit, output control circuit and the ON-OFF control circuit that is connected with the transformation control circuit; The output of said ON-OFF control circuit is connected with load through inserting a metal-oxide-semiconductor; Said output control circuit is connected with load through a LC filter circuit; Said ON-OFF control circuit also is connected with the MCU master controller of the PWM generation of a may command metal-oxide-semiconductor.
Furthermore, in the technique scheme, described input control circuit comprises: a protective circuit, rectification circuit, filter circuit; Wherein, said protective circuit is connected with rectification circuit input end, and rectification circuit output end is connected with the filter circuit input.
Furthermore, in the technique scheme, described protective circuit comprises: fuse of connecting with rectification circuit input end and the piezo-resistance that is parallel to rectification circuit input end.
Furthermore, in the technique scheme, in being connected with the filter circuit output, it comprises a high frequency transformer to described transformation control circuit through an absorption circuit, this high frequency transformer output rectifier diode of also connecting.
Furthermore, in the technique scheme, described ON-OFF control circuit input is connected with transformation control circuit output through an optical coupler.
Furthermore, in the technique scheme, described ON-OFF control circuit comprises: pressure limiting control circuit, short-circuit protection circuit, constant-current control circuit and the described MCU master controller that is connected with constant-current control circuit; Described pressure limiting control circuit, short-circuit protection circuit and constant-current control circuit are in parallel.
Furthermore, in the technique scheme, described MCU master controller comprises eight pins, and wherein, first pin is connected with said constant-current control circuit; Second pin is connected with an indicator light; The 5th pin is connected with said metal-oxide-semiconductor; The 7th pin is connected with a switch; The 8th pin digital grounding; Third and fourth, six pins are unsettled.
After adopting technique scheme, the utility model has following beneficial effect compared with prior art:
When 1, the utility model is worked; In order in the environment of dark, to slow down the influence of human eye to the high light sudden change; Master controller recently changes the average current of light fixture through the duty that changes PWM in several seconds behind the open and close light fixture simultaneously when handling the open and close light fixture, thereby when making switch; The light of light fixture by dark change to gradually the brightest, when turning off the light, the light of light fixture is changed to secretly until turning off the light by the brightest gradually.Can make human eye can adapt to the variation of light fixture light very soon like this.In addition, for some special lamplight scenes, light fixture need reach the lighting effects of being lighted or extinguishing gradually gradually, and the utility model also can be realized easily.
2, the protection circuit in the utility model comprises: fuse of connecting with rectification circuit input end and the piezo-resistance that is parallel to rectification circuit input end.Can play double protection to the lamp switch circuit like this, promptly fuse plays the first heavily protection; Piezo-resistance realizes the second heavily protection, and piezo-resistance can suppress the abnormal overvoltage that often occurs in the circuit, and protective circuit is avoided superpotential infringement, makes the utility model can steady operation.
Description of drawings:
Fig. 1 is the circuit theory diagrams of the utility model;
Embodiment:
Below in conjunction with specific embodiment and accompanying drawing the utility model is further specified.
See shown in Figure 1, a kind of lamp switch control circuit, this lamp switch control circuit comprises: input control circuit 1, transformation control circuit 2, output control circuit 3 and with the ON-OFF control circuit with MCU master control 4; ON-OFF control circuit 4 comprises the MCU master controller 40 that the PWM of a may command metal-oxide-semiconductor 41 produces.
Particularly, described input control circuit 1 comprises: a protective circuit 11, rectification circuit 12, filter circuit 13; Wherein, said protective circuit 11 is connected with rectification circuit 12 inputs, and rectification circuit 12 outputs are connected with filter circuit 13 inputs.Described protective circuit 11 comprises: fuse 111 of connecting with rectification circuit 12 inputs and the piezo-resistance 112 that is parallel to rectification circuit 12 inputs.Fuse 111 plays the first heavily protection; Piezo-resistance 112 realizes the second heavily protection, and piezo-resistance 112 can suppress the abnormal overvoltage that often occurs in the circuit, and protective circuit is avoided superpotential infringement, makes the utility model can steady operation.
In being connected with filter circuit 13 outputs, it comprises a high frequency transformer 22 to described transformation control circuit 2 through an absorption circuit 21, these high frequency transformer 22 outputs rectifier diode 23 of also connecting.Said output control circuit 3 is connected with load 5 through a LC filter circuit 31; The output of said ON-OFF control circuit 4 is connected with load 5 through inserting a metal-oxide-semiconductor 41.Described ON-OFF control circuit 4 inputs are connected with transformation control circuit 2 outputs through an optical coupler 6.
Described ON-OFF control circuit 4 comprises: pressure limiting control circuit 42, short-circuit protection circuit 43, constant-current control circuit 44 and the MCU master controller 40 that is connected with constant-current control circuit 44; Described pressure limiting control circuit 42, short-circuit protection circuit 43 and constant-current control circuit 44 are in parallel.Described MCU master controller 40 comprises eight pins, and wherein, first pin is connected with said constant-current control circuit 44, and second pin is connected with an indicator light 46; The 5th pin is connected with said metal-oxide-semiconductor 41, and the 7th pin is connected with a switch 45, the 8th pin digital grounding, third and fourth, six pins are unsettled.
After input control circuit 1 connects civil power through protective circuit; The utility model is in holding state, and after pressing switch 45, the MCU master controller 40 in the ON-OFF control circuit 4 receives low level signal; Pass through routine processes; 41 conductings of output high level driven MOS pipe are equivalent to load switch and open, and light fixture is lighted; At this moment, when light fixture is lighted, press switch 45 at this, the MCU master controller 40 in the ON-OFF control circuit 4 receives low level signal once more, and through routine processes, output low level driven MOS pipe 41 ends, and is equivalent to load switch and is closed, and light fixture extinguishes.
In order in the environment of dark, to slow down the influence of human eye to the high light sudden change; MCU master controller 40 is when handling the open and close light fixture; Recently change the average current of light fixture simultaneously through the duty that changes PWM in several seconds behind the open and close light fixture; Thereby when making switch, the light of light fixture by dark change to gradually the brightest, when turning off the light, the light of light fixture is changed to secretly until turning off the light by the brightest gradually.
Certainly; The above is merely the specific embodiment of the utility model; Be not to limit the utility model practical range, all equivalences of doing according to the said structure of the utility model claim, characteristic and principle change or modify, and all should be included in the utility model claim.
Claims (7)
1. lamp switch control circuit, it is characterized in that: this lamp switch control circuit comprises: input control circuit (1), transformation control circuit (2), output control circuit (3) and the ON-OFF control circuit (4) that is connected with transformation control circuit (3); The output of said ON-OFF control circuit (4) is connected with load (5) through inserting a metal-oxide-semiconductor (41); Said output control circuit (3) is connected with load (5) through a LC filter circuit (31); Said ON-OFF control circuit (4) comprises the MCU master controller (40) that the PWM of a may command metal-oxide-semiconductor (41) produces.
2. a kind of lamp switch control circuit according to claim 1 is characterized in that: described input control circuit (1) comprising: a protective circuit (11), rectification circuit (12), filter circuit (13); Wherein, said protective circuit (11) is connected with rectification circuit (12) input, and rectification circuit (12) output is connected with filter circuit (13) input.
3. a kind of lamp switch control circuit according to claim 2 is characterized in that: described protective circuit (11) comprising: fuse (111) of connecting with rectification circuit (12) input and the piezo-resistance (112) that is parallel to rectification circuit (12) input.
4. a kind of lamp switch control circuit according to claim 2; It is characterized in that: described transformation control circuit (2) passes through an absorption circuit (21) in being connected with filter circuit (13) output; It comprises a high frequency transformer (22), this high frequency transformer (22) output rectifier diode (23) of also connecting.
5. a kind of lamp switch control circuit according to claim 1 is characterized in that: described ON-OFF control circuit (4) input is connected with transformation control circuit (2) output through an optical coupler (6).
6. a kind of lamp switch control circuit according to claim 1 is characterized in that: described ON-OFF control circuit (4) comprising: pressure limiting control circuit (42), short-circuit protection circuit (43), constant-current control circuit (44) and the described MCU master controller (40) that is connected with constant-current control circuit (44); Described pressure limiting control circuit (42), short-circuit protection circuit (43) and constant-current control circuit (44) are in parallel.
7. a kind of lamp switch control circuit according to claim 6 is characterized in that: described MCU master controller (40) comprises eight pins, and wherein, first pin is connected with said constant-current control circuit (44); Second pin is connected with an indicator light (46); The 5th pin is connected with said metal-oxide-semiconductor; The 7th pin is connected with a switch (45); The 8th pin digital grounding; Third and fourth, six pins are unsettled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220046815 CN202587469U (en) | 2012-02-14 | 2012-02-14 | Light fixture switch control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220046815 CN202587469U (en) | 2012-02-14 | 2012-02-14 | Light fixture switch control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202587469U true CN202587469U (en) | 2012-12-05 |
Family
ID=47256821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220046815 Expired - Fee Related CN202587469U (en) | 2012-02-14 | 2012-02-14 | Light fixture switch control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202587469U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110809343A (en) * | 2019-12-10 | 2020-02-18 | 江一奇 | Control method for gradually-lighting and gradually-dimming LED (light emitting diode) illumination |
-
2012
- 2012-02-14 CN CN 201220046815 patent/CN202587469U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110809343A (en) * | 2019-12-10 | 2020-02-18 | 江一奇 | Control method for gradually-lighting and gradually-dimming LED (light emitting diode) illumination |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20140214 |