CN103298187B - Flashlight control circuit and corresponding flashlight - Google Patents
Flashlight control circuit and corresponding flashlight Download PDFInfo
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- CN103298187B CN103298187B CN201210049909.7A CN201210049909A CN103298187B CN 103298187 B CN103298187 B CN 103298187B CN 201210049909 A CN201210049909 A CN 201210049909A CN 103298187 B CN103298187 B CN 103298187B
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- flashlight
- control circuit
- circuit
- mercoid switch
- triode
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- 230000000694 effects Effects 0.000 claims abstract description 12
- 230000006641 stabilisation Effects 0.000 claims description 11
- 238000011105 stabilization Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 5
- 230000005611 electricity Effects 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 5
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 5
- 229910052753 mercury Inorganic materials 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 239000011324 bead Substances 0.000 description 4
- 230000003068 static effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The present invention relates to a kind of flashlight control circuit and corresponding flashlight, comprising battery; For sending the control circuit of pwm signal; For the constant-current drive circuit of constant-current driving LED; And for the switching circuit of size of current according to pwm signal adjustment constant-current drive circuit; Battery is connected with control circuit and switching circuit respectively, and control circuit is connected with switching circuit, and switching circuit is connected with constant-current drive circuit; Control circuit comprises: for detecting the mercoid switch circuit of flashlight activity situation; And for according to the unblanking of mercoid switch circuit or the control chip of closing described control circuit.Flashlight control circuit of the present invention and corresponding flashlight can automatic cut-off powers thus close flashlight when flashlight does not use, avoid existing flashlight control circuit and corresponding flashlight usually due to user do not note causing do not use time power consumption always, thus without the defect that electricity is available when causing using.
Description
Technical field
The present invention relates to circuit design field, more particularly, relate to a kind of realize auto-breaking flashlight control circuit and corresponding flashlight.
Background technology
The circuit design of current flashlight is all simple switch designs; but user often can run in use forget close flashlight or after opening by mistake flashlight user do not know and do not close the situation of flashlight; the electricity of such flashlight has consumed because of opening by mistake; available without electricity when causing really using flashlight, cause the inconvenience of flashlight user.
Summary of the invention
The technical problem to be solved in the present invention is, for existing flashlight control circuit and corresponding flashlight usually due to user do not note causing do not use time power consumption always, thus without the defect that electricity is available when causing using.There is provided a kind of can the flashlight control circuit of auto-breaking and corresponding flashlight when not using.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of flashlight control circuit, comprising battery; For sending the control circuit of pwm signal; For the constant-current drive circuit of constant-current driving LED; And for the switching circuit of the size of current that adjusts described constant-current drive circuit according to described pwm signal; Described battery is connected with described control circuit and described switching circuit respectively, and described control circuit is connected with described switching circuit, and described switching circuit is connected with described constant-current drive circuit; Described control circuit comprises: for detecting the mercoid switch circuit of flashlight activity situation; And for according to the unblanking of described mercoid switch circuit or the control chip of closing described control circuit.
In flashlight control circuit of the present invention, described mercoid switch circuit comprises: for detecting the horizontal mercoid switch of flashlight horizontal direction activity situation; For detecting the vertical mercoid switch of flashlight vertical direction activity situation; For sending the triode Q1 of unlatching or shutdown signal according to the signal of described horizontal mercoid switch; And for sending the triode Q2 of unlatching or shutdown signal according to the signal of described vertical mercoid switch; The base stage of described triode Q1 is connected with one end of described horizontal mercoid switch and power supply respectively, and the collector electrode of described triode Q1 is connected with power supply and control chip respectively, the emitter of described triode Q1 and the other end of described horizontal mercoid switch ground connection respectively; The base stage of described triode Q2 is connected with one end of described vertical mercoid switch and power supply respectively, and the collector electrode of described triode Q2 is connected with power supply and control chip respectively, the emitter of described triode Q2 and the other end of described vertical mercoid switch ground connection respectively.
In flashlight control circuit of the present invention, described control circuit also comprises the reference cell for providing reference voltage to the memory of described control chip; Described reference cell is connected with described control chip.
In flashlight control circuit of the present invention, described reference cell comprises the power supply chip TL431 providing 2.5V source of stable pressure.
In flashlight control circuit of the present invention, described control circuit also comprises the first filter circuit for providing burning voltage to described control chip, and described control chip is connected with described battery by described first filter circuit.
In flashlight control circuit of the present invention, described first filter circuit comprises inductance L 1 and electric capacity CT2, one end of described inductance L 1 connects described battery, one end ground connection of described electric capacity CT2, the other end of described inductance L 1 is connected with described control chip respectively with the other end of described electric capacity CT2.
In flashlight control circuit of the present invention, described flashlight control circuit also comprises for exporting the second filter circuit carrying out filtering process to described battery.
In flashlight control circuit of the present invention, described second filter circuit comprises electric capacity CT1, one end ground connection of described electric capacity CT1, and the other end of described electric capacity CT1 is connected with described battery.
In flashlight control circuit of the present invention, described constant-current drive circuit comprises light-emitting diode D3 and current stabilization chip U2, the model of described current stabilization chip is SB42351, the anode of described light-emitting diode D3 is connected with described switching circuit, and the negative electrode of described light-emitting diode D3 is by described current stabilization chip U2 ground connection.
The invention still further relates to a kind of flashlight adopting above-mentioned flashlight control circuit.
Implement flashlight control circuit of the present invention and corresponding flashlight, there is following beneficial effect: when flashlight does not use can automatic cut-off power thus close flashlight, avoid existing flashlight control circuit and corresponding flashlight usually due to user do not note causing do not use time power consumption always, thus without the defect that electricity is available when causing using.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the structural representation of the first preferred embodiment of flashlight control circuit of the present invention;
Fig. 2 is the structural representation of the second preferred embodiment of flashlight control circuit of the present invention;
Fig. 3 is the structural representation of the 3rd preferred embodiment of flashlight control circuit of the present invention;
Fig. 4 is the structural representation of the 4th preferred embodiment of flashlight control circuit of the present invention;
Fig. 5 is the physical circuit schematic diagram of the preferred embodiment of flashlight control circuit of the present invention;
Fig. 6 is the physical circuit schematic diagram of the mercoid switch circuit of the preferred embodiment of flashlight control circuit of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
In the structural representation of the first preferred embodiment of the flashlight control circuit of the present invention shown in Fig. 1, described flashlight control circuit comprises battery 1, control circuit 2, constant-current drive circuit 3 and switching circuit 4, control circuit 2 is for sending pwm signal, constant-current drive circuit 3 is for constant-current driving LED, switching circuit 4 is for the size of current according to described pwm signal adjustment constant-current drive circuit 3, battery 1 is connected with control circuit 2 and switching circuit 4 respectively, control circuit 2 is connected with switching circuit 4, switching circuit 4 is connected with constant-current drive circuit 3, control circuit 2 comprises mercoid switch circuit 21 and control chip 22, mercoid switch circuit 21 is for detecting flashlight activity situation, control chip 22 is for according to the unblanking of mercoid switch circuit 21 or closing control circuit 2.Mercoid switch is the one of contactor, with the containers store one droplet mercury of a then electrode, most inert gas injecting or vacuum in container, because the relation of gravity, when flashlight is static, mercury bead can lower ground square diffluence in container, if touch two electrodes simultaneously, switch just by closing of circuit, can send unlatching or shutdown signal, horizontal mercoid switch can when switch level by corresponding closing of circuit, and vertical mercoid switch can when switch is vertical by corresponding closing of circuit.
Mercoid switch circuit 21 is provided with in flashlight control circuit of the present invention, detect flashlight by mercoid switch and whether be in using state, as flashlight is in using state, the vibration produced when flashlight uses can cause the state of mercoid switch to change always, thus mercoid switch circuit 21 alternately sends start signal and shutdown signal makes control chip 22 open control circuit 2; As flashlight remains static a period of time, the minimum point that mercury bead will flow to container touches two electrodes, makes mercoid switch circuit 21 continue to send start signal or shutdown signal makes control chip 22 closing control circuit 2.Mercoid switch sensitivity (flowing velocity of mercury bead is faster, and the sensitivity of mercoid switch is higher) can be set by the flowing velocity changing mercury bead, reach the effect of auto-breaking when flashlight is unmanned to be used.
In the physical circuit schematic diagram of the mercoid switch circuit of the preferred embodiment of the flashlight control circuit of the present invention shown in Fig. 6, described mercoid switch circuit 21 comprises horizontal mercoid switch, vertical mercoid switch, triode Q1 and triode Q2, horizontal mercoid switch is for detecting flashlight horizontal direction activity situation, vertical mercoid switch is for detecting flashlight vertical direction activity situation, triode Q1 is used for sending unlatching or shutdown signal according to the signal of described horizontal mercoid switch, triode Q2 is used for sending unlatching or shutdown signal according to the signal of vertical mercoid switch, the base stage of triode Q1 is connected with one end of horizontal mercoid switch and power supply respectively, the collector electrode of triode Q1 is connected with power supply and control chip 22 respectively, the emitter of triode Q1 and the other end of described horizontal mercoid switch ground connection respectively, the base stage of described triode Q2 is connected with one end of described vertical mercoid switch and power supply respectively, the collector electrode of described triode Q2 is connected with power supply and control chip 22 respectively, the emitter of described triode Q2 and the other end of described vertical mercoid switch ground connection respectively.
Mercoid switch of the present invention comprises the horizontal mercoid switch of horizontal direction and the vertical mercoid switch of vertical direction, mercoid switch circuit 21 can be avoided like this to send the cut-off signals of mistake, only within a period of time, horizontal mercoid switch continues to send start signal or shutdown signal, when vertical mercoid switch also continues to send start signal or shutdown signal simultaneously, control chip 22 just can make control circuit 2 quit work by corresponding pin, thus closes flashlight.As horizontal mercoid switch or vertical mercoid switch is arbitrary alternately sends start signal and shutdown signal, control chip 22 can make control circuit 2 and flashlight work on by corresponding pin.
For the horizontal mercoid switch in Fig. 6, when horizontal mercoid switch is in level, suppose to send start signal, at this moment the base stage of triode Q1 is low level, triode Q1 ends, the current collection very high level of triode Q1, therefore exports high level to the respective pin of control chip 22.When horizontal mercoid switch is in non-standard state, send shutdown signal, at this moment the base stage of triode Q1 is high level, triode Q1 conducting, and the current collection very low level of triode Q1, therefore to the respective pin output low level of control chip 22.The operation principle of vertical mercoid switch in like manner.When horizontal mercoid switch or vertical mercoid switch alternately send start signal and shutdown signal due to the use of flashlight always, control chip 22 will control flashlight continuous firing.When horizontal mercoid switch continues to send start signal or shutdown signal within a period of time, when vertical mercoid switch also continues to send start signal or shutdown signal within a period of time simultaneously, control chip 22 will control flashlight and quit work.
In the structural representation of the second preferred embodiment of the flashlight control circuit of the present invention shown in Fig. 2, described control circuit 2 also comprises reference cell 23, reference cell 23 provides reference voltage for giving the memory of described control chip 22, described reference cell 23 is connected with described control chip 22, and described reference cell 23 comprises the power supply chip TL431 providing 2.5V source of stable pressure.Power supply chip TL431 provides stable 2.5V to do benchmark to the AD memory of control chip 22, makes AD memory processes data more accurate, can the voltage of monitoring battery 1 more accurately, makes corresponding control action.
In the structural representation of the 3rd preferred embodiment of the flashlight control circuit of the present invention shown in Fig. 3, described control circuit 2 also comprises the first filter circuit 24, first filter circuit 24 provides burning voltage for giving described control chip 22, and control chip 22 is connected with battery 1 by the first filter circuit 24.First filter circuit 24 comprises inductance L 1 and electric capacity CT2, and one end of inductance L 1 connects battery 1, and one end ground connection of electric capacity CT2, the other end of inductance L 1 is connected with control chip 22 respectively with the other end of electric capacity CT2.Inductance L 1 carries out filtering process to provide stable principal voltage to control chip 22 with electric capacity CT2 to the voltage that battery 1 exports.
In the structural representation of the 4th preferred embodiment of the flashlight control circuit of the present invention shown in Fig. 4, described flashlight control circuit also comprises for exporting the second filter circuit 5 carrying out filtering process to described battery 1.Described second filter circuit 5 comprises electric capacity CT1, one end ground connection of described electric capacity CT1, and the other end of described electric capacity CT1 is connected with described battery 1.Electric capacity CT1 plays filter action to the voltage that battery 1 exports, and filters the ripple voltage that battery 1 or charger bring because of external disturbance, exports stable voltage.
In the physical circuit schematic diagram of the preferred embodiment of the flashlight control circuit of the present invention shown in Fig. 5, described constant-current drive circuit 3 comprises light-emitting diode D3 and current stabilization chip U2, the model of current stabilization chip is SB42351, the anode of light-emitting diode D3 is connected with switching circuit 4, and the negative electrode of light-emitting diode D3 is by current stabilization chip U2 ground connection.The size of current of the control of the switching tube Q1 by switching circuit 4 constant-current drive circuit 3 of the present invention, constant-current drive circuit 3 passes through current stabilization chip U2 and drives light-emitting diode D3 luminous, and ensures the stable of the steady and light intensity of the electric current of driving light-emitting diode D3.
Below by the specific works principle of the physical circuit schematic view illustrating flashlight control circuit of the present invention of the mercoid switch circuit of the preferred embodiment of the flashlight control circuit of the present invention shown in the physical circuit schematic diagram of the preferred embodiment of the flashlight control circuit of the present invention described in Fig. 5 and Fig. 6.
Control chip 22 is the single-chip microcomputer of model HT66F03C, and the pwm signal output being controlled 3 pins by 4 pins being input to control chip 22 of button SW is closed with the unlatching of by-pass cock pipe Q1, thus the electric current of control LED, regulate the brightness of LED.Two mercoid switches are in vertical direction and horizontal direction respectively, when flashlight is in static for a long time, horizontal mercoid switch can continue to send start signal or shutdown signal to 5 pins of control chip 22, simultaneously vertical mercoid switch also can continue to send start signal or shutdown signal to 5 pins of control chip 22, control chip 22 can make control circuit 2 stop pwm signal output by 3 pins, to constant-current drive circuit 3 power-off, play the effect of power saving.When flashlight is when using in motion, horizontal mercoid switch or vertical mercoid switch can alternately send start signal and shutdown signal always, control chip 22 detects the action of mercoid switch by triode Q2 and triode Q1, open pwm signal to export, power to constant-current drive circuit 3, light LED.Power supply chip TL431 provides stable 2.5V to do benchmark to the AD memory of control chip 22 by 2 pins of control chip 22, makes AD memory processes data more accurate, can the voltage of monitoring battery 1 more accurately, makes corresponding control action.Inductance L 1 carries out filtering process to provide stable principal voltage to 1 pin of control chip 22 with electric capacity CT2 to the voltage that battery 1 exports.Current stabilization chip U2 mainly plays constant-current driving LED, makes LED stabilized illumination by its conducting.Flashlight control circuit of the present invention is on the basis realizing power saving, and structure is simple, perfect in shape and function, and control of the low light level, high light, quick-fried sudden strain of a muscle and voltage etc. function all can realize.
The invention still further relates to a kind of flashlight, this flashlight adopts above-mentioned flashlight control circuit, therefore this flashlight when not using can automatic cut-off power thus close flashlight, avoid existing flashlight usually due to user do not note causing do not use time power consumption always, thus without the available defect of electricity when causing using.The specific embodiment of the beneficial effect of flashlight of the present invention and embodiment and above-mentioned flashlight control circuit is same or similar, specifically see the specific embodiment of above-mentioned flashlight control circuit.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every equivalent structure transformation utilizing specification of the present invention and accompanying drawing content to do, or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (9)
1. a flashlight control circuit, is characterized in that, comprising:
Battery (1);
For sending the control circuit (2) of pwm signal;
For the constant-current drive circuit (3) of constant-current driving LED; And
For adjusting the switching circuit (4) of the size of current of described constant-current drive circuit (3) according to described pwm signal; Described battery (1) is connected with described control circuit (2) and described switching circuit (4) respectively, described control circuit (2) is connected with described switching circuit (4), and described switching circuit (4) is connected with described constant-current drive circuit (3);
Described control circuit (2) comprising:
For detecting the mercoid switch circuit (21) of flashlight activity situation; And
For according to the unblanking of described mercoid switch circuit (21) or the control chip (22) of closing described control circuit (2);
Described mercoid switch circuit (21) comprising:
For detecting the horizontal mercoid switch of flashlight horizontal direction activity situation;
For detecting the vertical mercoid switch of flashlight vertical direction activity situation;
For sending the triode Q1 of unlatching or shutdown signal according to the signal of described horizontal mercoid switch; And for sending the triode Q2 of unlatching or shutdown signal according to the signal of described vertical mercoid switch;
The base stage of described triode Q1 is connected with one end of described horizontal mercoid switch and power supply respectively, the collector electrode of described triode Q1 is connected with power supply and described control chip (22) respectively, the emitter of described triode Q1 and the other end of described horizontal mercoid switch ground connection respectively;
The base stage of described triode Q2 is connected with one end of described vertical mercoid switch and power supply respectively, the collector electrode of described triode Q2 is connected with power supply and described control chip (22) respectively, the emitter of described triode Q2 and the other end of described vertical mercoid switch ground connection respectively.
2. flashlight control circuit according to claim 1, is characterized in that, described control circuit (2) also comprises the reference cell (23) for providing reference voltage to the memory of described control chip (22); Described reference cell (23) is connected with described control chip (22).
3. flashlight control circuit according to claim 2, is characterized in that, described reference cell (23) comprises the power supply chip TL431 providing 2.5V source of stable pressure.
4. flashlight control circuit according to claim 1, it is characterized in that, described control circuit (2) also comprises the first filter circuit (24) for providing burning voltage to described control chip (22), and described control chip (22) is connected with described battery (1) by described first filter circuit (24).
5. flashlight control circuit according to claim 4, it is characterized in that, described first filter circuit (24) comprises inductance L 1 and electric capacity CT2, one end of described inductance L 1 connects described battery (1), one end ground connection of described electric capacity CT2, the other end of described inductance L 1 is connected with described control chip (22) respectively with the other end of described electric capacity CT2.
6. flashlight control circuit according to claim 1, is characterized in that, described flashlight control circuit also comprises for exporting the second filter circuit (5) carrying out filtering process to described battery (1).
7. flashlight control circuit according to claim 6, is characterized in that, described second filter circuit (5) comprises electric capacity CT1, one end ground connection of described electric capacity CT1, and the other end of described electric capacity CT1 is connected with described battery (1).
8. flashlight control circuit according to claim 1, it is characterized in that, described constant-current drive circuit (3) comprises light-emitting diode D3 and current stabilization chip U2, the model of described current stabilization chip is SB42351, the anode of described light-emitting diode D3 is connected with described switching circuit (4), and the negative electrode of described light-emitting diode D3 is by described current stabilization chip U2 ground connection.
9. a flashlight, is characterized in that, adopts flashlight control circuit arbitrary in claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210049909.7A CN103298187B (en) | 2012-02-29 | 2012-02-29 | Flashlight control circuit and corresponding flashlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210049909.7A CN103298187B (en) | 2012-02-29 | 2012-02-29 | Flashlight control circuit and corresponding flashlight |
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| Publication Number | Publication Date |
|---|---|
| CN103298187A CN103298187A (en) | 2013-09-11 |
| CN103298187B true CN103298187B (en) | 2016-04-20 |
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| CN201210049909.7A Expired - Fee Related CN103298187B (en) | 2012-02-29 | 2012-02-29 | Flashlight control circuit and corresponding flashlight |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104766419B (en) * | 2014-01-02 | 2019-01-15 | 深圳市海洋王照明工程有限公司 | Fire-fighting sound light alarming circuit and fire-fighting combined aural and visual alarm |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201026804Y (en) * | 2007-04-03 | 2008-02-27 | 姚柏泉 | Electric bicycle tipping motor braking device |
| WO2009048863A1 (en) * | 2007-10-09 | 2009-04-16 | Nichol Anthony J | Light coupling into illuminated films |
| CN101815386A (en) * | 2010-04-30 | 2010-08-25 | 海洋王照明科技股份有限公司 | LED lamp and control circuit thereof |
| CN202129526U (en) * | 2011-05-16 | 2012-02-01 | 张明辉 | Automatic delayed power-off soldering iron |
-
2012
- 2012-02-29 CN CN201210049909.7A patent/CN103298187B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201026804Y (en) * | 2007-04-03 | 2008-02-27 | 姚柏泉 | Electric bicycle tipping motor braking device |
| WO2009048863A1 (en) * | 2007-10-09 | 2009-04-16 | Nichol Anthony J | Light coupling into illuminated films |
| CN101815386A (en) * | 2010-04-30 | 2010-08-25 | 海洋王照明科技股份有限公司 | LED lamp and control circuit thereof |
| CN202129526U (en) * | 2011-05-16 | 2012-02-01 | 张明辉 | Automatic delayed power-off soldering iron |
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| CN103298187A (en) | 2013-09-11 |
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