CN111954343A - Circuit system capable of automatically switching light source - Google Patents
Circuit system capable of automatically switching light source Download PDFInfo
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- CN111954343A CN111954343A CN202010824601.XA CN202010824601A CN111954343A CN 111954343 A CN111954343 A CN 111954343A CN 202010824601 A CN202010824601 A CN 202010824601A CN 111954343 A CN111954343 A CN 111954343A
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- 239000002245 particle Substances 0.000 claims description 23
- 230000005669 field effect Effects 0.000 claims description 4
- 238000005286 illumination Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/345—Current stabilisation; Maintaining constant current
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/20—Controlling the colour of the light
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses a circuit system capable of automatically switching light sources, which comprises a sensing device, a switching device and a light-emitting device which are electrically connected in sequence, wherein the circuit system is used for acquiring external weather condition information by sensing and controlling the symmetrical constant-current LED driving circuits to be switched on or off by combining a control signal and a phase inverter, so that the lighting switching of white light and yellow light is automatically controlled, white light lighting is adopted in sunny days, and yellow light sources are adopted in foggy days, rainy days, snowy days and dusty days, so that the street lamp is automatically controlled to use white light lighting or yellow light lighting without manual control.
Description
Technical Field
The invention relates to the technical field of illumination control, in particular to a circuit system capable of automatically switching light sources.
Background
For general illumination, people need a white light source, the brightness of the white light source is clear, the safety can be improved, but the white light lamp is high in brightness and is easy to cause dazzling; however, when weather is bad, such as fog or rain, the white light source cannot be seen clearly due to poor penetration ability, and the safety is reduced. If the illumination is made with yellow light, the yellow light will be most transparent and will perform best in a dark, light-absorbing environment, so the illumination will be most visible with yellow light. The effect of yellow light penetrating mist moisture is better than that of white light.
However, the street lamp in the prior art only has a single color temperature light source, generally only has a white light source or a yellow light source, cannot automatically change the color of the light source along with the weather change, cannot adapt to various weather conditions, and cannot meet the requirements of high-performance practical application. In view of the above situation, the present invention provides a circuit system capable of automatically switching light sources, which can effectively improve the prior art and overcome the disadvantages thereof.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a circuit system capable of automatically switching a light source, which can automatically control the illumination switching of white light and yellow light according to the external weather condition information without manual control.
In order to achieve the purpose, the invention adopts the following technical scheme: circuitry for automatically switchable light sources, the circuitry comprising:
a light emitting device including 3000K yellow light source and 5700K white light source; and
the sensing device is used for sensing the measured information and converting the measured information into an electric signal to be output;
and the switching device is used for receiving the electric signal and driving the light-emitting device according to the electric signal.
Preferably, the switching device includes a first constant current driving circuit, an inverter circuit, and a second constant current driving circuit, and the first constant current driving circuit, the inverter circuit, and the second constant current driving circuit are electrically connected in sequence.
Preferably, the first constant current driving circuit comprises a first transistor (Q1) and a first operational amplifier (a 1), a positive input end of the first operational amplifier (a 1) is connected with a reference voltage, an output end of the first operational amplifier is electrically connected with a gate of the first transistor (Q1), a source of the first transistor (Q1) drives a 5700K white light source of the light emitting device and feeds a driving current back to a negative input end of the first operational amplifier (a 1), and a drain of the first transistor (Q1) is connected with a power supply.
Preferably, the second constant current driving circuit comprises a second transistor (Q2) and a second operational amplifier (a 2), a positive input end of the second operational amplifier (a 2) is connected with a reference voltage, an output end of the second operational amplifier is electrically connected with a gate of the second transistor (Q2), a source of the second transistor (Q2) drives a 3000K yellow light source of the light-emitting device and feeds a driving current back to a negative input end of the second operational amplifier (a 2), and a drain of the second transistor (Q2) is connected with a power supply.
Preferably, the inverter circuit comprises an inverter, an input terminal of the inverter being connected to the gate of the switching device first transistor (Q1), and an output terminal of the inverter being connected to the gate of the switching device second transistor (Q2).
Preferably, the transistor adopts one or more of a field effect transistor and a bipolar transistor.
Preferably, the sensing device comprises a humidity sensor and a particle sensor, and the humidity sensor and the particle sensor are both electrically connected with the switching device.
Preferably, when the humidity information sensed by the humidity sensor is higher than a first threshold, the sensing device drives a 3000K yellow light source of the light-emitting device; when the humidity information sensed by the humidity sensor is lower than a first threshold value, the sensing device drives the 5700K white light source of the light-emitting device.
Preferably, when the particle information sensed by the particle sensor is higher than a second threshold, the sensing device drives a 3000K yellow light source of the light-emitting device; when the particle information sensed by the particle sensor is lower than a second threshold value, the sensing device drives a 5700K white light source of the light-emitting device.
Preferably, the circuit system further comprises a temperature sensor and a display screen, and the temperature sensor displays the sensed temperature information in real time through the display screen.
The invention has the beneficial effects that: according to the circuit system capable of automatically switching the light source, which is disclosed by the embodiment of the invention, the external weather condition information is collected through induction, and the symmetrical constant-current LED driving circuits are controlled to be switched on or off by combining the control signal and the phase inverter, so that the switching of the white light and the yellow light is automatically controlled, the white light is adopted for illumination in sunny days, and the yellow light source is adopted in foggy days, rainy days, snowy days and dusty days, so that the white light illumination or the yellow light illumination is automatically controlled to be used for the street lamp, and manual control is not needed.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, the embodiments in the drawings do not constitute any limitation to the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a system diagram of an embodiment of a circuit system capable of automatically switching a light source according to the present invention.
FIG. 2 is a specific circuit diagram of an embodiment of a switching device capable of automatically switching light sources according to the present invention.
FIG. 3 is a specific circuit diagram of an embodiment of a switching device capable of automatically switching light sources according to the present invention.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and embodiments, which are preferred embodiments of the present invention. It is to be understood that the described embodiments are merely a subset of the embodiments of the invention, and not all embodiments; it should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
The invention provides a circuit system capable of automatically switching light sources, which comprises a light emitting device, a sensing device and a switching device, wherein the light emitting device comprises a 3000K yellow light source and a 5700K white light source, the sensing device is used for sensing measured information and converting the measured information into an electric signal to be output, and the switching device is used for receiving the electric signal and driving the light emitting device according to the electric signal, as shown in figure 1.
It is noted that the 3000K yellow light source and the 5700K white light source in this embodiment may comprise a single electro-optic diode or a string of electro-optic diodes.
In this embodiment, the switching device includes a first constant current driving circuit, an inverter circuit, and a second constant current driving circuit, and the first constant current driving circuit, the inverter circuit, and the second constant current driving circuit are electrically connected in sequence. The specific circuit is shown in fig. 3, and is described in detail as follows:
the first constant current driving circuit comprises a first transistor (Q1) and a first operational amplifier (A1), wherein a positive input end of the first operational amplifier (A1) is connected with a reference voltage, an output end of the first operational amplifier is electrically connected with a grid electrode of the first transistor (Q1), a source electrode of the first transistor (Q1) drives a 5700K white light source of the light-emitting device and feeds back a driving current to a negative input end of the first operational amplifier (A1), and a drain electrode of the first transistor (Q1) is connected with a power supply.
The second constant current driving circuit comprises a second transistor (Q2) and a second operational amplifier (A2), wherein a positive input end of the second operational amplifier (A2) is connected with a reference voltage, an output end of the second operational amplifier is electrically connected with a grid electrode of the second transistor (Q2), a source electrode of the second transistor (Q2) drives a 3000K yellow light source of the light-emitting device and feeds back a driving current to a negative input end of the second operational amplifier (A2), and a drain electrode of the second transistor (Q2) is connected with the power supply.
The inverter circuit includes an inverter having an input terminal connected to the gate of the switching device first transistor (Q1) and an output terminal connected to the gate of the switching device second transistor (Q2).
In this embodiment, the sensing device includes a humidity sensor and a particle sensor, and both the humidity sensor and the particle sensor are electrically connected to the switching device.
In this embodiment, when the humidity information sensed by the humidity sensor is higher than the first threshold, the first constant current driving circuit is in a working state, the sensing device drives the 3000K yellow light source of the light emitting device to emit light, and the control signal is acted by the inverter, so that the 5700K white light source of the light emitting device is turned off; similarly, when the humidity information sensed by the humidity sensor is lower than the first threshold value, the second constant current driving circuit is in a working state, the sensing device drives the 5700K white light source of the light emitting device to emit light, and the 3000K yellow light source is turned off.
In this embodiment, when the particle information sensed by the particle sensor is higher than the second threshold, the first constant current driving circuit is in a working state, the sensing device drives the 3000K yellow light source of the light emitting device to emit light, and the control signal acts through the inverter, so that the 5700K white light source of the light emitting device is turned off; similarly, when the particle information sensed by the particle sensor is lower than a second threshold value, the second constant current driving circuit is in a working state, the sensing device drives the 5700K white light source of the light emitting device to emit light, and the 3000K yellow light source is turned off.
Note that the transistor in this embodiment may be one or more of a field effect transistor and a bipolar transistor. Preferably, the first transistor (Q1) and the second transistor (Q2) in this embodiment are both NMOS transistors. Note that the transistor in this embodiment may have a structure in which the gate and the source of the depletion N-channel MOS transistor are connected, but it is needless to say that the transistor may have a structure in which the gate and the source of the depletion P-channel MOS transistor are connected, although not illustrated.
Example two
The invention provides a circuit system capable of automatically switching light sources, which comprises a light emitting device, a sensing device, a switching device and a display screen, wherein the light emitting device comprises a 3000K yellow light source and a 5700K white light source, the sensing device is used for sensing measured information and converting the measured information into electric signals to be output, and the switching device is used for receiving the electric signals and driving the light emitting device according to the electric signals, as shown in figure 2.
It is noted that the 3000K yellow light source and the 5700K white light source in this embodiment may comprise a single electro-optic diode or a string of electro-optic diodes.
In this embodiment, the switching device includes a first constant current driving circuit, an inverter circuit, and a second constant current driving circuit, and the first constant current driving circuit, the inverter circuit, and the second constant current driving circuit are electrically connected in sequence. The specific circuit is shown in fig. 2, and is described in detail as follows:
the first constant current driving circuit comprises a first transistor (Q1) and a first operational amplifier (A1), wherein a positive input end of the first operational amplifier (A1) is connected with a reference voltage, an output end of the first operational amplifier is electrically connected with a grid electrode of the first transistor (Q1), a source electrode of the first transistor (Q1) drives a 5700K white light source of the light-emitting device and feeds back a driving current to a negative input end of the first operational amplifier (A1), and a drain electrode of the first transistor (Q1) is connected with a power supply.
The second constant current driving circuit comprises a second transistor (Q2) and a second operational amplifier (A2), wherein a positive input end of the second operational amplifier (A2) is connected with a reference voltage, an output end of the second operational amplifier is electrically connected with a grid electrode of the second transistor (Q2), a source electrode of the second transistor (Q2) drives a 3000K yellow light source of the light-emitting device and feeds back a driving current to a negative input end of the second operational amplifier (A2), and a drain electrode of the second transistor (Q2) is connected with the power supply.
The inverter circuit includes an inverter having an input terminal connected to the gate of the switching device first transistor (Q1) and an output terminal connected to the gate of the switching device second transistor (Q2).
In this embodiment, the sensing device includes a temperature sensor, a humidity sensor and a particle sensor, and the temperature sensor, the humidity sensor and the particle sensor are all electrically connected to the switching device. The temperature sensor displays the sensed temperature information in real time through the display screen.
In this embodiment, when the humidity information sensed by the humidity sensor is higher than the first threshold, the first constant current driving circuit is in a working state, the sensing device drives the 3000K yellow light source of the light emitting device to emit light, and the control signal is acted by the inverter, so that the 5700K white light source of the light emitting device is turned off; similarly, when the humidity information sensed by the humidity sensor is lower than the first threshold value, the second constant current driving circuit is in a working state, the sensing device drives the 5700K white light source of the light emitting device to emit light, and the 3000K yellow light source is turned off.
In this embodiment, when the particle information sensed by the particle sensor is higher than the second threshold, the first constant current driving circuit is in a working state, the sensing device drives the 3000K yellow light source of the light emitting device to emit light, and the control signal acts through the inverter, so that the 5700K white light source of the light emitting device is turned off; similarly, when the particle information sensed by the particle sensor is lower than the second threshold value, the second constant current driving circuit is in a working state, the sensing device drives the 5700K white light source of the light emitting device to emit light, and the 3000K yellow light source is turned off.
Note that the transistor in this embodiment may be one or more of a field effect transistor and a bipolar transistor. Preferably, the first transistor (Q1) and the second transistor (Q2) in this embodiment are both NMOS transistors. Note that the transistor in this embodiment may have a structure in which the gate and the source of the depletion N-channel MOS transistor are connected, but it is needless to say that the transistor may have a structure in which the gate and the source of the depletion P-channel MOS transistor are connected, although not illustrated.
In summary, the working principle of the circuit system capable of automatically switching the light source according to the embodiment of the invention is as follows: the method has the advantages that the external weather condition information is collected through induction, the symmetrical constant-current LED driving circuits are controlled to be switched on or off through the control signals and the phase inverters, so that the illumination switching of white light and yellow light is automatically controlled, white light illumination is adopted in sunny days, and yellow light sources are adopted in foggy days, rainy days, snowy days and dusty days, so that the white light illumination or yellow light illumination is automatically controlled to be used by the street lamp without manual control.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly. In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. Moreover, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
It should also be noted that in the description herein, references to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. Circuitry for automatically switching a light source, the circuitry comprising:
a light emitting device including 3000K yellow light source and 5700K white light source; and
the sensing device is used for sensing the measured information and converting the measured information into an electric signal to be output;
and the switching device is used for receiving the electric signal and driving the light-emitting device according to the electric signal.
2. The circuit system according to claim 1, wherein the switching device comprises a first constant current driving circuit, an inverter circuit, and a second constant current driving circuit, and the first constant current driving circuit, the inverter circuit, and the second constant current driving circuit are electrically connected in sequence.
3. The circuit system of claim 2, wherein the first constant current driving circuit comprises a first transistor (Q1) and a first operational amplifier (a 1), a reference voltage is connected to a positive input terminal of the first operational amplifier (a 1), an output terminal of the first operational amplifier is electrically connected to a gate of the first transistor (Q1), a source of the first transistor (Q1) drives a 5700K white light source of the light emitting device and feeds a driving current back to a negative input terminal of the first operational amplifier (a 1), and a drain of the first transistor (Q1) is connected to a power supply.
4. The circuit system of claim 2, wherein the second constant current driving circuit comprises a second transistor (Q2) and a second operational amplifier (a 2), a reference voltage is connected to a positive input terminal of the second operational amplifier (a 2), an output terminal of the second operational amplifier is electrically connected to a gate of the second transistor (Q2), a source of the second transistor (Q2) drives a 3000K yellow light source of the light emitting device and feeds a driving current back to a negative input terminal of the second operational amplifier (a 2), and a drain of the second transistor (Q2) is connected to a power supply.
5. The circuitry of claim 2, wherein the inverting circuit comprises an inverter, an input of the inverter being coupled to the gate of the switching device first transistor (Q1), and an output of the inverter being coupled to the gate of the switching device second transistor (Q2).
6. The circuit system according to claim 3, 4 or 5, wherein the transistor is one or more of a field effect transistor and a bipolar transistor.
7. The circuitry of any of claims 1-5, wherein the sensing device comprises a humidity sensor and a particle sensor, both of which are electrically connected to the switching device.
8. The circuit system of claim 7, wherein when the humidity information sensed by the humidity sensor is higher than a first threshold, the sensing device drives a 3000K yellow light source of the light emitting device; when the humidity information sensed by the humidity sensor is lower than a first threshold value, the sensing device drives the 5700K white light source of the light-emitting device.
9. The circuitry of claim 8, wherein the sensing device drives a 3000K yellow light source of the light emitting device when the particle information sensed by the particle sensor is above a second threshold; when the particle information sensed by the particle sensor is lower than a second threshold value, the sensing device drives a 5700K white light source of the light-emitting device.
10. The circuit system of claim 8 or 9, further comprising a temperature sensor and a display screen, wherein the temperature sensor displays the sensed temperature information in real time via the display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010824601.XA CN111954343A (en) | 2020-08-17 | 2020-08-17 | Circuit system capable of automatically switching light source |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010824601.XA CN111954343A (en) | 2020-08-17 | 2020-08-17 | Circuit system capable of automatically switching light source |
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| JP2011143847A (en) * | 2010-01-15 | 2011-07-28 | Mitsubishi Motors Corp | Luminescent color control device of headlamp |
| US20120299476A1 (en) * | 2011-05-23 | 2012-11-29 | General Electric Company | Configurable vehicle solid state lighting |
| CN103697374A (en) * | 2013-11-27 | 2014-04-02 | 南通新世纪机电有限公司 | Street lamp |
| CN203797596U (en) * | 2013-12-19 | 2014-08-27 | 重庆绿色科技开发有限公司 | Fog and haze prevention LED multi-color-temperature intelligent remote control street lamp |
| CN105704856A (en) * | 2016-02-02 | 2016-06-22 | 林德（中国）叉车有限公司 | Circuit capable of adjusting and controlling output via cooperation between control interfaces and PWM interfaces |
| CN107548219A (en) * | 2017-10-19 | 2018-01-05 | 东莞市翔实信息科技有限公司 | Linear constant current electric light drive circuit, integrated circuit and control system |
| CN212544125U (en) * | 2020-08-17 | 2021-02-12 | 宁波石上天际能源有限公司 | Circuit system capable of automatically switching light source |
-
2020
- 2020-08-17 CN CN202010824601.XA patent/CN111954343A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011143847A (en) * | 2010-01-15 | 2011-07-28 | Mitsubishi Motors Corp | Luminescent color control device of headlamp |
| US20120299476A1 (en) * | 2011-05-23 | 2012-11-29 | General Electric Company | Configurable vehicle solid state lighting |
| CN103697374A (en) * | 2013-11-27 | 2014-04-02 | 南通新世纪机电有限公司 | Street lamp |
| CN203797596U (en) * | 2013-12-19 | 2014-08-27 | 重庆绿色科技开发有限公司 | Fog and haze prevention LED multi-color-temperature intelligent remote control street lamp |
| CN105704856A (en) * | 2016-02-02 | 2016-06-22 | 林德（中国）叉车有限公司 | Circuit capable of adjusting and controlling output via cooperation between control interfaces and PWM interfaces |
| CN107548219A (en) * | 2017-10-19 | 2018-01-05 | 东莞市翔实信息科技有限公司 | Linear constant current electric light drive circuit, integrated circuit and control system |
| CN212544125U (en) * | 2020-08-17 | 2021-02-12 | 宁波石上天际能源有限公司 | Circuit system capable of automatically switching light source |
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