CN201479421U - Two-stage optical control circuit - Google Patents
Two-stage optical control circuit Download PDFInfo
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- CN201479421U CN201479421U CN200920169707XU CN200920169707U CN201479421U CN 201479421 U CN201479421 U CN 201479421U CN 200920169707X U CN200920169707X U CN 200920169707XU CN 200920169707 U CN200920169707 U CN 200920169707U CN 201479421 U CN201479421 U CN 201479421U
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- drive circuit
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Abstract
The utility model relates to a two-stage optical control circuit, essentially comprising a light induced circuit, a comparison circuit, a shift switch, a first drive circuit and a second drive circuit; wherein the first drive circuit is held in conducted state for driving a load, the second drive circuit is connected with the first drive circuit in parallel, the light induced circuit can generate an electric signal according to a illumination brightness, the comparison circuit receives the electric signal and generates a trigger signal when the electric signal is higher than a preset value, and the shift switch decides the conduction state of the second drive circuit according to the trigger signal. The two-stage optical control circuit can provide two electric energies of different voltages to drive load, according to illumination brightness.
Description
Technical field
The utility model relates to a kind of light-operated circuit, particularly relates to a kind of two-period form light-operated circuit.
Background technology
General all can have a simple instrument plate as the electronic installation that shows purposes, for example instrument board such as seven-segment display.Yet this simple instrument plate just can the clear reading of the person of being used usually under the environment of light source abundance.In other words, if, just be difficult to the content on the identification simple instrument plate at the shady place of night or illumination deficiency.
Therefore, at present for to overcome the technological means that the problems referred to above adopt, be to add a push switch to start a bulb.Yet when the simple instrument plate was used in such as occasions such as device for vehicular electronic, the user was difficult to the push switch of diverting attention.
In addition, based on considering of comfortableness, the carrier of automobile and so on all can have the safeguard procedures of isolated sunlight.And also therefore, the instrument board of device for vehicular electronic often is in the environment of ambient illumination deficiency.
Therefore, if the simple instrument plate sensitization automatically of device for vehicular electronic starts bulb, then can be the user and bring great convenience.
This shows that the simple instrument plate of above-mentioned existing electronic installation obviously still has inconvenience and defective, and demands urgently further being improved in structure and use.In order to solve the problem of above-mentioned existence, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of two-period form light-operated circuit of new structure, real one of the current important research and development problem that belongs to, also becoming the current industry utmost point needs improved target.
Summary of the invention
The purpose of this utility model is, overcome the defective of the simple instrument plate existence of existing electronic installation, and provide a kind of two-period form light-operated circuit of new structure, technical problem to be solved is that it can simplified under framework and the low cost, overcome the lighting problem of electronic installation instrument board, be very suitable for practicality.
The purpose of this utility model and to solve its technical problem be to adopt following technical scheme to realize.According to a kind of two-period form light-operated circuit that the utility model proposes, it comprises: a photoinduction circuit is in order to according to an illumination brightness, produces an electrical signals; One comparison circuit is in order to receiving this electrical signals, and during greater than a preset value, produces a triggering signal in this electrical signals; And a two-period form circuit, be in order to receiving this triggering signal, and in order to drive a load, this two-period form circuit comprises: one first drive circuit is to be maintained at conducting state, to drive this load; One second drive circuit is to be parallel to this first drive circuit; Reaching one and switch switch, is in order to according to this triggering signal, determines the conducting state of this second drive circuit; By this, this two-period form circuit is according to this illumination brightness, and the electric energy that two kinds of varying strengths are provided is to drive this load.
The purpose of this utility model and solve its technical problem and can also be further achieved by the following technical measures.
Aforesaid two-period form light-operated circuit, wherein said photoinduction circuit is connected a stabilizing circuit by a photo resistance and is formed.
Aforesaid two-period form light-operated circuit, wherein said comparison circuit are built in a microcontroller in being.
Aforesaid two-period form light-operated circuit, wherein said diverter switch are the grid of a transistor switch.
Aforesaid two-period form light-operated circuit, source electrode and drain electrode that wherein said second drive circuit is this transistor switch.
Aforesaid two-period form light-operated circuit, wherein said first drive circuit is at least one diode.
The purpose of this utility model and solve its technical problem and also realize by the following technical solutions.According to a kind of two-period form light-operated circuit that the utility model proposes, it mainly switches switch, one first drive circuit and one second drive circuit by a photoinduction circuit, a comparison circuit, is formed, wherein: this first drive circuit is to be maintained at conducting state, to drive a load; This second drive circuit is to be parallel to this first drive circuit; This photoinduction circuit is in order to according to an illumination brightness, produces an electrical signals; This comparison circuit is in order to receiving this electrical signals, and during greater than a preset value, produces a triggering signal in this electrical signals; And this diverter switch, be in order to according to this triggering signal, determine the conducting state of this second drive circuit; By this, this two-period form light-operated circuit is according to this illumination brightness, and the electric energy that two kinds of varying strengths are provided is to drive this load.
The purpose of this utility model and solve its technical problem and can also be further achieved by the following technical measures.
Aforesaid two-period form light-operated circuit, wherein said photoinduction circuit is connected a stabilizing circuit by a photo resistance and is formed.
Aforesaid two-period form light-operated circuit, wherein said comparison circuit are built in a microcontroller in being.
Aforesaid two-period form light-operated circuit, wherein said diverter switch are the grid of a transistor switch.
Aforesaid two-period form light-operated circuit, source electrode and drain electrode that wherein said second drive circuit is this transistor switch.
Aforesaid two-period form light-operated circuit, wherein said first drive circuit is at least one diode.
The utility model compared with prior art has tangible advantage and beneficial effect.By technique scheme, the utility model two-period form light-operated circuit has following advantage and beneficial effect at least: comparison circuit of the present utility model can in build in the microcontroller of various electronic installations, thereby save circuit area and manufacturing cost.By this, two-period form light-operated circuit of the present utility model can be complied with the brightness of electronic installation place occasion, produces two kinds of illumination.
In sum, the utility model relates to a kind of two-period form light-operated circuit, mainly switches switch, one first drive circuit and one second drive circuit by a photoinduction circuit, a comparison circuit, and is formed.Wherein, first drive circuit is to be maintained at conducting state, to drive a load; Second drive circuit then is to be parallel to first drive circuit.Photoinduction circuit is in order to according to an illumination brightness, produces an electrical signals.Comparison circuit is in order to receiving electrical signals, and during greater than a preset value, produces a triggering signal in electrical signals.Diverter switch is in order to according to triggering signal, determines the conducting state of second drive circuit.By this, the two-period form circuit can be according to illumination brightness, and the electric energy that two kinds of varying strengths are provided is to drive load.The utility model has obvious improvement technically, and has tangible good effect, really is a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification, and for above-mentioned and other purposes, feature and advantage of the present utility model can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is the functional block diagram of the two-period form light-operated circuit of the utility model one better embodiment.
Fig. 2 is the structural representation of the photoinduction circuit of Fig. 1.
Fig. 3 is the structural representation of the comparison circuit of Fig. 1 in another better embodiment.
Fig. 4 is the structural representation of the comparison circuit of Fig. 1 in another better embodiment.
Fig. 5 is the structural representation of the two-period form circuit of Fig. 1 in another better embodiment.
Fig. 6 is the structural representation of the two-period form circuit of Fig. 1 in another better embodiment.
VDD: voltage source 100: two-period form light-operated circuit
110: photoinduction circuit 111: photo resistance
112: stabilizing circuit 120: comparison circuit
121: preset value 122: comparator
123: microcontroller 130: the two-period form circuit
131: 132: the first drive circuits of commutation circuit
301: the first transistor 302: the high pressure drop diode
303: transistor seconds 304: the low pressure drop diode
305: Zener diode 306: the capacitance resistance parallel-connection structure
307: electric capacity of voltage regulation 308: resistance
Embodiment
For further setting forth the utility model is to reach technological means and the effect that predetermined goal of the invention is taked, below in conjunction with accompanying drawing and preferred embodiment, to according to its embodiment of two-period form light-operated circuit, structure, feature and the effect thereof that the utility model proposes, describe in detail as after.
Relevant aforementioned and other technology contents, characteristics and effect of the present utility model can clearly present in the following detailed description that cooperates with reference to graphic preferred embodiment.Explanation by embodiment, when can being to reach technological means that predetermined purpose takes and effect to obtain one more deeply and concrete understanding to the utility model, yet appended graphic only provide with reference to the usefulness of explanation, be not to be used for the utility model is limited.
See also shown in the figure the 1st, Fig. 1 is the functional block diagram of the two-period form light-operated circuit of the utility model one better embodiment; Explain for convenient, more illustrate a load 200 among the figure.Wherein, two-period form light-operated circuit 100 comprises a photoinduction circuit 110, a comparison circuit 120 and a two-period form circuit 130.Photoinduction circuit 110 is in order to according to an illumination brightness, produces an electrical signals.Comparison circuit 120 is in order to receiving electrical signals, and during greater than a preset value 121, produces a triggering signal in electrical signals.Two-period form circuit 130 is in order to the reception triggering signal, and in order to drive load 200.And load 200 is a lighting device, for example light emitting diode bulb.Wherein, two-period form circuit 130 comprises that more one switches switch 131, one first drive circuit 132 and one second drive circuit 133.First drive circuit 132 is to be maintained at conducting state, to drive load 200.Second drive circuit 133 is to be parallel to first drive circuit 132.Diverter switch 131 is in order to according to triggering signal, determines the conducting state of second drive circuit 133.By this, two-period form circuit 130 can be according to illumination brightness, and the electric energy that two kinds of varying strengths are provided is to drive load 200.
In other words, when the miniature instrument plate of the two-period form light-operated circuit 100 of using present embodiment at device for vehicular electronic, because device for vehicular electronic generally is positioned in dark place, so two-period form circuit 130 continues to light load 200 with first drive circuit 132, to keep the miniature instrument plate in macroscopic definition.And enter tunnel or night etc. during more dim environment when carriers such as automobiles, photoinduction circuit 110 drives two-period form circuit 130 by comparison circuit 120, make two-period form circuit 130 drive load 200 with first drive circuit 132 and second drive circuit 133 simultaneously, and then stronger brightness of illumination is provided.
Please continue to consult shown in Figure 2, Fig. 2 is the structural representation of the photoinduction circuit of Fig. 1.Wherein, based on simplifying circuit and cost-effective considering, photoinduction circuit 110 can be made up of a photo resistance 111 series connection one stabilizing circuits 112.Photo resistance 111 is based on external light source intensity, and the electric energy whether decision is provided voltage source V DD is introduced; Stabilizing circuit 112 then is made up of a resistance electric capacity in parallel, and the characteristic in order to electric capacity provides more stable electrical signals.In other words, if just shook photo resistance 111, and cause this photoinduction circuit 110 to be positioned at the illusion of dark environment with hand is of short duration; Then do not filled fullly yet, be unlikely to misoperation and produce electrical signals because of electric capacity.From another angle thinking, of short duration shade hides action, can make photo resistance 111 emit the surging of a high frequency, and the electric capacity of stabilizing circuit 112 just can absorb this surging.
See also shown in Figure 3ly, Fig. 3 is the structural representation of the comparison circuit of Fig. 1 in another better embodiment.If use two-period form light-operated circuit 100 when not having the simple circuit of microcontroller, then comparison circuit 120 can be realized by a comparator 122.
Please continue to consult shown in Figure 4, Fig. 4 is the structural representation of the comparison circuit of Fig. 1 in another better embodiment.General device for vehicular electronic all can have microcontroller 123 to exist, and to carry out other functions, for example detects the speed of a motor vehicle or tire pressure.Therefore, the comparison circuit 120 of present embodiment can in be built in the microcontroller 123; At this moment, microcontroller 123 can receive the electrical signals of the analog in nature that photoinduction circuit 110 provided, and exports the triggering signal of digital nature then and gives two-period form circuit 130.When microcontroller 123 carries out the conversion of analog signal and digital signal, just can realize drive controlling comparatively accurately.In other words, the triggering signal intensity that two-period form circuit 130 is received, the electrical signals that needn't equal proportion be provided in photoinduction circuit 110.Therefore, select electronic component for use, with as the diverter switch 131 of two-period form circuit 130 time, needn't be limited by input stage, that is the electrical order of magnitude of photoinduction circuit 110.From another angle thinking, microcontroller 123 makes comparison circuit 120 be able to the preceding late-class circuit of electrical isolation.
See also shown in Figure 5ly, Fig. 5 is the structural representation of the two-period form circuit of Fig. 1 in another better embodiment.Its connected mode does not repeat them here as shown in the figure.Wherein, the grid of the first transistor 301 can be in order to as diverter switch 131, and the source electrode of the first transistor 301 just can form second drive circuit 133 with drain electrode.And first drive circuit 132 in order to remain in conducting state, can be made up of at least one high pressure drop diode 302.Particularly, suppose that voltage source V DD is 5 volts, then two high pressure drop diodes 302 just can provide 1.4 volts conduction voltage drop on first drive circuit 132.Therefore, two-period form light-operated circuit 100 as long as provide about 3.6 volts electric weight to drive bulb, can make the content of miniature instrument plate be known identification by day the time.And when two-period form light-operated circuit 100 at night the time, the first transistor 301 is switched on, and produces 0.2 volt conduction voltage drop, and then the bulb even load just can additionally be received the electric current from second drive circuit 133.
Please continue to consult shown in Figure 6, Fig. 6 is the structural representation of the two-period form circuit of Fig. 1 in another better embodiment.Wherein, aforementioned diverter switch 131 can be made of jointly the first transistor 301 and transistor seconds 303.In addition, based on electrically considering, transistor seconds 303 rear ends can connect a low pressure drop diode 304, in order to avoid the misoperation of load end because of expecting poured in down a chimney into transistor seconds 303 electric current.In like manner, the input of two-period form circuit 130 can couple a Zener diode 305, with protection two-period form circuit 130.In addition, when combination the first transistor 301 and transistor seconds 303 when forming aforementioned diverter switch 131, because the first transistor 301 is the normal open transistor with transistor seconds 303, triggering signal need change the employing electronegative potential, and the grid of transistor seconds 303 is to be couple to voltage source V DD by a capacitance resistance parallel-connection structure 306, with the only conducting when the triggering signal input of electronegative potential of control transistor seconds 303.Certainly, in order to keep the voltage quality that drives load, output can couple an electric capacity of voltage regulation 307 again; Damage aforementioned transistor for fear of big electric current, the first transistor 301 can couple a resistance 308.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, though the utility model discloses as above with preferred embodiment, yet be not in order to limit the utility model, any those skilled in the art are not in breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, according to technical spirit of the present utility model to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solutions of the utility model.
Claims (12)
1. two-period form light-operated circuit is characterized in that it comprises:
One photoinduction circuit is in order to according to an illumination brightness, produces an electrical signals;
One comparison circuit is in order to receiving this electrical signals, and during greater than a preset value, produces a triggering signal in this electrical signals; And
One two-period form circuit be in order to receiving this triggering signal, and in order to drive a load, this two-period form circuit comprises:
One first drive circuit is to be maintained at conducting state, to drive this load;
One second drive circuit is to be parallel to this first drive circuit; And
One switches switch, is in order to according to this triggering signal, determines the conducting state of this second drive circuit;
By this, this two-period form circuit is according to this illumination brightness, and the electric energy that two kinds of varying strengths are provided is to drive this load.
2. two-period form light-operated circuit according to claim 1 is characterized in that wherein said photoinduction circuit connects a stabilizing circuit by a photo resistance and form.
3. two-period form light-operated circuit according to claim 1 is characterized in that wherein said comparison circuit is built in a microcontroller in being.
4. two-period form light-operated circuit according to claim 1 is characterized in that wherein said diverter switch is the grid of a transistor switch.
5. two-period form light-operated circuit according to claim 1 is characterized in that source electrode and the drain electrode of wherein said second drive circuit for this transistor switch.
6. two-period form light-operated circuit according to claim 1 is characterized in that wherein said first drive circuit is at least one diode.
7. a two-period form light-operated circuit is characterized in that it mainly switches switch, one first drive circuit and one second drive circuit by a photoinduction circuit, a comparison circuit, and is formed, wherein:
This first drive circuit is to be maintained at conducting state, to drive a load;
This second drive circuit is to be parallel to this first drive circuit;
This photoinduction circuit is in order to according to an illumination brightness, produces an electrical signals;
This comparison circuit is in order to receiving this electrical signals, and during greater than a preset value, produces a triggering signal in this electrical signals; And
This diverter switch is in order to according to this triggering signal, determines the conducting state of this second drive circuit;
By this, this two-period form light-operated circuit is according to this illumination brightness, and the electric energy that two kinds of varying strengths are provided is to drive this load.
8. two-period form light-operated circuit according to claim 7 is characterized in that wherein said photoinduction circuit connects a stabilizing circuit by a photo resistance and form.
9. two-period form light-operated circuit according to claim 7 is characterized in that wherein said comparison circuit is built in a microcontroller in being.
10. two-period form light-operated circuit according to claim 7 is characterized in that wherein said diverter switch is the grid of a transistor switch.
11. two-period form light-operated circuit according to claim 7 is characterized in that source electrode and the drain electrode of wherein said second drive circuit for this transistor switch.
12. two-period form light-operated circuit according to claim 7 is characterized in that wherein said first drive circuit is at least one diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920169707XU CN201479421U (en) | 2009-08-06 | 2009-08-06 | Two-stage optical control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920169707XU CN201479421U (en) | 2009-08-06 | 2009-08-06 | Two-stage optical control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201479421U true CN201479421U (en) | 2010-05-19 |
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ID=42415676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920169707XU Expired - Fee Related CN201479421U (en) | 2009-08-06 | 2009-08-06 | Two-stage optical control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201479421U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102264168A (en) * | 2010-05-25 | 2011-11-30 | 合肥三川自控工程有限责任公司 | Induction lighting lamp and induction lighting system |
| CN103841694A (en) * | 2012-11-22 | 2014-06-04 | 深圳市海洋王照明工程有限公司 | Lamp |
-
2009
- 2009-08-06 CN CN200920169707XU patent/CN201479421U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102264168A (en) * | 2010-05-25 | 2011-11-30 | 合肥三川自控工程有限责任公司 | Induction lighting lamp and induction lighting system |
| CN102264168B (en) * | 2010-05-25 | 2015-01-07 | 合肥三川自控工程有限责任公司 | Induction lighting lamp and induction lighting system |
| CN103841694A (en) * | 2012-11-22 | 2014-06-04 | 深圳市海洋王照明工程有限公司 | Lamp |
| CN103841694B (en) * | 2012-11-22 | 2017-11-21 | 深圳市海洋王照明工程有限公司 | A kind of light fixture |
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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: 20100519 Termination date: 20100806 |