CN102685970A - Dimming device transmitting control signal with alternating power line - Google Patents
Dimming device transmitting control signal with alternating power line Download PDFInfo
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- CN102685970A CN102685970A CN2011100681216A CN201110068121A CN102685970A CN 102685970 A CN102685970 A CN 102685970A CN 2011100681216 A CN2011100681216 A CN 2011100681216A CN 201110068121 A CN201110068121 A CN 201110068121A CN 102685970 A CN102685970 A CN 102685970A
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Abstract
The invention relates to a dimming device transmitting a control signal with an alternating power line, which is applied to an alternating power supply, a light-emitting diode driving power unit and a light-emitting diode unit. The dimming device transmitting the control signal with the alternating power line comprises an input voltage detection unit, a single click signal unit, an and gate unit, a pulse width modulation dimming signal unit, an inductance unit, a first switch unit, a dimming signal restoration unit and a second switch unit. The input voltage detection unit is electrically connected to the alternating power supply, the inductance unit and the single click signal unit; the and gate unit is electrically connected to the single click signal unit, the pulse width modulation dimming signal unit and the first switch unit; the dimming signal restoration unit is electrically connected to the light-emitting diode driving power unit, the inductance unit, the first switch unit and the second switch unit; and the second switch unit is electrically connected to the light-emitting diode unit. According to the dimming device transmitting control signal with the alternating power line, a dimming signal can be transmitted through the alternating power line.
Description
Technical field
The present invention relates to a kind of light modulating device, particularly a kind of light modulating device that uses the alternating current line of force to transmit control signal.
Background technology
Light modulation is a kind of very general technology.In the middle of most light regulating technology, the alternating current line of force can't be transmitted AC power and dim signal simultaneously; Transmit dim signal and need extra holding wire.This will cause the waste of electric wire layout and increase cost.
Summary of the invention
For improving the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of light modulating device that uses the alternating current line of force to transmit control signal.
For reaching above-mentioned purpose of the present invention; The light modulating device that the use alternating current line of force provided by the invention transmits control signal is applied to an AC power, a light-emitting diode driving power unit and a light emitting diode; This light emitting diode is electrically connected to this light-emitting diode driving power unit; The light modulating device that this use alternating current line of force transmits control signal comprises: an input voltage detecting unit is electrically connected to this AC power; One clicks signal element, is electrically connected to this input voltage detecting unit, and when this input voltage detection arrived this AC power in a low-voltage, this input voltage detecting unit promptly sent a low voltage signal and clicks signal element to this; One and gate cell, be electrically connected to this and click signal element, when this is clicked signal element and receives this low voltage signal, this click signal element promptly send one click signal to should and gate cell; One PWM dim signal unit is electrically connected to this and gate cell, this PWM dim signal unit send a PWM dim signal to should and gate cell; One inductance unit is electrically connected to this AC power and this input voltage detecting unit; One first switch element; Be electrically connected to this inductance unit and should and gate cell; After should this being clicked signal and this PWM dim signal work and door computing with gate cell, be somebody's turn to do and this first switch element of gate cell control, when this first switch element conducting; This inductance unit can be by this alternating current power supply charging; When this not conducting of first switch element, this inductance unit can be to this AC power discharge, and the charging and discharging of this inductance unit merges back generation one with this AC power and exchanges dim signal; One dim signal restoration unit is electrically connected to this light-emitting diode driving power unit, this inductance unit and this first switch element; And a second switch unit, be electrically connected to this dim signal restoration unit and this light emitting diode.This dim signal restoration unit restores this PWM dim signal to control this second switch unit so that this light emitting diode is carried out light modulation after receiving and should exchanging dim signal.
Effect of the present invention is to use the alternating current line of force to transmit dim signal.
Describe the present invention below in conjunction with accompanying drawing and specific embodiment, but not as to qualification of the present invention.
Description of drawings
Fig. 1 is the light modulating device block diagram that the use alternating current line of force of the present invention transmits control signal;
Fig. 2 is the waveform sketch map that the use alternating current line of force of the present invention transmits the light modulating device of control signal;
Fig. 3 is the waveform sketch map that the use alternating current line of force of the present invention transmits the light modulating device of control signal.
Wherein, Reference numeral
Use the alternating current line of force to transmit the light modulating device 10 of control signal
AC power 20
Light-emitting diode driving power unit 40
Input voltage detecting unit 102
Click signal element 104
With gate cell 106
PWM dim signal unit 108
Transmitting element 116
High pass circuit subelement 118
Dim signal restoration unit 124
Click signal 128
PWM dim signal 130
Exchange dim signal 132
Embodiment
Below in conjunction with accompanying drawing structural principle of the present invention and operation principle are done concrete description:
Please refer to Fig. 1, it is the light modulating device block diagram that the use alternating current line of force of the present invention transmits control signal.The light modulating device 10 that the use alternating current line of force of the present invention transmits control signal is to be applied to an AC power 20, a light-emitting diode driving power unit 40 and a light emitting diode 30; This light emitting diode 30 is electrically connected to this light-emitting diode driving power unit 40.
The light modulating device 10 that this use alternating current line of force transmits control signal comprises a transmitting element 116 and a reception driver element 134.This transmitting terminal unit 116 comprises an input voltage detecting unit 102, and clicks signal element 104, one and gate cell 106, a PWM dim signal unit 108, an inductance unit 110, a diode 112, one first switch element 114.This reception driver element 134 comprises a second switch unit 122 and a dim signal restoration unit 124.This dim signal restoration unit 124 comprises a high pass (high pass) circuit subelement 118 and a comparison circuit subelement 120.
This input voltage detecting unit 102 is electrically connected to this AC power 20; This is clicked signal element 104 and is electrically connected to this input voltage detecting unit 102; Should be electrically connected to this with gate cell 106 and click signal element 104; This PWM dim signal unit 108 is electrically connected to this and gate cell 106; This inductance unit 110 is electrically connected to this AC power 20 and this input voltage detecting unit 102; This first switch element 114 is electrically connected to this inductance unit 110 and is somebody's turn to do and gate cell 106; This dim signal restoration unit 124 is electrically connected to this light-emitting diode driving power unit 40, this inductance unit 110 and this first switch element 114.
This second switch unit 122 is electrically connected to this dim signal restoration unit 124 and this light emitting diode 30; This diode 112 is electrically connected to this inductance unit 110 and this first switch element 114; This high pass circuit subelement 118 is electrically connected to this light-emitting diode driving power unit 40, this diode 112 and this inductance unit 110; This comparison circuit subelement 120 is electrically connected to this high pass circuit subelement 118 and this second switch unit 122.
Should with gate cell 106 can be one with the door (an AND gate); This inductance unit 110 can be an inductance; This diode 112 can be a diode; This first switch element 114 can be a transistor switch; This second switch unit 122 can be a transistor switch.
When this input voltage detecting unit 102 detects this AC power 20 in a low-voltage (for example 20 volts time), this input voltage detecting unit 102 promptly sends a low voltage signal 126 and clicks signal element 104 to this; When this is clicked signal element 104 and receives this low voltage signal 126, this click signal element 104 promptly send one click signal 128 (for example 30 microseconds) to should and gate cell 106.
This PWM dim signal unit 108 sends a PWM dim signal 130 to this and gate cell 106; After should this being clicked signal 128 and this PWM dim signal 130 works and door computing with gate cell 106, be somebody's turn to do and gate cell 106 these first switch elements 114 of control; Also promptly, look it, when this is clicked signal 128 and this PWM dim signal 130 and is 1 (or when being T with the angle of truth table (truth table); Be that both signal values are when all non-vanishing), should and gate cell 106 these first switch element, 114 conductings of control; Otherwise these first switch element, 114 not conductings.
Please refer to Fig. 2, it is the waveform sketch map that transmits the light modulating device of control signal for the use alternating current line of force of the present invention.From top to bottom first oscillogram is represented this AC power 20; On behalf of this, second oscillogram click signal 128; The 3rd oscillogram represented this PWM dim signal 130; On behalf of this and gate cell 106, the 4th oscillogram control the signal of these first switch elements 114.
When these first switch element, 114 conductings (ON time is merely for example 30 microseconds from the above), the current potential of this AC power 20 can be pulled down, and this inductance unit 110 can be by these AC power 20 chargings; Then, during these first switch element, 114 not conductings, this inductance unit 110 can be to these AC power 20 discharges; The charging and discharging of this inductance unit 110 merges back generation one with this AC power 20 and exchanges dim signal 132; This waveform that exchanges dim signal 132 is as shown in Figure 3.
This interchange dim signal 132 can be sent to this light-emitting diode driving power unit 40 and this dim signal restoration unit 124; After this light-emitting diode driving power unit 40 received and should exchange dim signal 132, this light-emitting diode driving power unit 40 can provide this light emitting diode 30 driving powers.
After this dim signal restoration unit 124 receives and should exchange dim signal 132, restore this PWM dim signal 130, detail as the back to control this second switch unit 122 so that this light emitting diode 30 is carried out light modulation:
After this high pass circuit subelement 118 received and is somebody's turn to do interchange dim signal 132, this high pass circuit subelement 118 can carry out high-pass filtering to this interchange dim signal 132, these AC power 20 filterings was only stayed these inductance unit 110 chargings and discharge and the waveform of generation; Afterwards; This comparison circuit subelement 120 utilize 110 chargings of a triangular wave and this inductance unit and discharge and the waveform that produces relatively the back to restore this PWM dim signal 130, to control this second switch unit 122 so that this light emitting diode 30 is carried out the PWM light modulation.
The present invention is attached on the AC power after can the PWM dim signal being changed, and is sent to the light-emitting diodes pipe end via the alternating current line of force; After the light-emitting diodes pipe end carries out high-pass filtering again, restore the PWM dim signal so that light-emitting diode is carried out the PWM light modulation.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (9)
1. light modulating device that uses the alternating current line of force to transmit control signal; Be applied to an AC power, a light-emitting diode driving power unit and a light emitting diode; This light emitting diode is electrically connected to this light-emitting diode driving power unit; It is characterized in that the light modulating device that this use alternating current line of force transmits control signal comprises:
One input voltage detecting unit is electrically connected to this AC power;
One clicks signal element, is electrically connected to this input voltage detecting unit, and when this input voltage detection arrived this AC power in a low-voltage, this input voltage detecting unit promptly sent a low voltage signal and clicks signal element to this;
One and gate cell, be electrically connected to this and click signal element, when this is clicked signal element and receives this low voltage signal, this click signal element promptly send one click signal to should and gate cell;
One PWM dim signal unit is electrically connected to this and gate cell, this PWM dim signal unit send a PWM dim signal to should and gate cell;
One inductance unit is electrically connected to this AC power and this input voltage detecting unit;
One first switch element; Be electrically connected to this inductance unit and should and gate cell; After should this being clicked signal and this PWM dim signal work and door computing with gate cell, be somebody's turn to do and this first switch element of gate cell control, when this first switch element conducting; This inductance unit can be by this alternating current power supply charging; When this not conducting of first switch element, this inductance unit can be to this AC power discharge, and the charging and discharging of this inductance unit merges back generation one with this AC power and exchanges dim signal;
One dim signal restoration unit is electrically connected to this light-emitting diode driving power unit, this inductance unit and this first switch element; And
One second switch unit is electrically connected to this dim signal restoration unit and this light emitting diode,
After wherein this dim signal restoration unit receives and should exchange dim signal, restore this PWM dim signal to control this second switch unit so that this light emitting diode is carried out light modulation.
2. the use alternating current line of force according to claim 1 transmits the light modulating device of control signal, it is characterized in that, also comprises a diode, is electrically connected to this inductance unit and this first switch element.
3. the use alternating current line of force according to claim 2 transmits the light modulating device of control signal; It is characterized in that; This dim signal restoration unit comprises a high pass circuit subelement, is electrically connected to this light-emitting diode driving power unit, this diode and this inductance unit.
4. the use alternating current line of force according to claim 3 transmits the light modulating device of control signal, it is characterized in that this dim signal restoration unit also comprises a comparison circuit subelement, is electrically connected to this high pass circuit subelement and this second switch unit.
5. the use alternating current line of force according to claim 4 transmits the light modulating device of control signal, it is characterized in that, should with gate cell be one with door.
6. the use alternating current line of force according to claim 5 transmits the light modulating device of control signal, it is characterized in that this inductance unit is an inductance.
7. the use alternating current line of force according to claim 6 transmits the light modulating device of control signal, it is characterized in that this diode is a diode.
8. the use alternating current line of force according to claim 7 transmits the light modulating device of control signal, it is characterized in that this first switch element is a transistor switch.
9. the use alternating current line of force according to claim 8 transmits the light modulating device of control signal, it is characterized in that this second switch unit is a transistor switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100681216A CN102685970A (en) | 2011-03-18 | 2011-03-18 | Dimming device transmitting control signal with alternating power line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100681216A CN102685970A (en) | 2011-03-18 | 2011-03-18 | Dimming device transmitting control signal with alternating power line |
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| Publication Number | Publication Date |
|---|---|
| CN102685970A true CN102685970A (en) | 2012-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100681216A Pending CN102685970A (en) | 2011-03-18 | 2011-03-18 | Dimming device transmitting control signal with alternating power line |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109982491A (en) * | 2018-06-07 | 2019-07-05 | 杨玲 | A kind of light adjusting controller and lamp light control system based on Novel electric line of force carrier wave |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1965611A1 (en) * | 2007-03-02 | 2008-09-03 | Mass Technology (H.K.) Ltd. | Stepless dimming fluorescent lamp and ballast thereof |
| CN101489342A (en) * | 2009-02-27 | 2009-07-22 | 杭州士兰微电子股份有限公司 | LED driver circuit and driving method thereof |
| CN101513129A (en) * | 2006-08-31 | 2009-08-19 | 松下电工株式会社 | Discharge lamp operation device and illumination device |
| US7888886B2 (en) * | 2005-05-10 | 2011-02-15 | Koninklijke Philips Electronics N.V. | Universal line voltage dimming method and system |
| CN201995185U (en) * | 2011-03-18 | 2011-09-28 | 群光电能科技股份有限公司 | Dimming device using AC power line to transmit control signal |
-
2011
- 2011-03-18 CN CN2011100681216A patent/CN102685970A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7888886B2 (en) * | 2005-05-10 | 2011-02-15 | Koninklijke Philips Electronics N.V. | Universal line voltage dimming method and system |
| CN101513129A (en) * | 2006-08-31 | 2009-08-19 | 松下电工株式会社 | Discharge lamp operation device and illumination device |
| EP1965611A1 (en) * | 2007-03-02 | 2008-09-03 | Mass Technology (H.K.) Ltd. | Stepless dimming fluorescent lamp and ballast thereof |
| CN101489342A (en) * | 2009-02-27 | 2009-07-22 | 杭州士兰微电子股份有限公司 | LED driver circuit and driving method thereof |
| CN201995185U (en) * | 2011-03-18 | 2011-09-28 | 群光电能科技股份有限公司 | Dimming device using AC power line to transmit control signal |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109982491A (en) * | 2018-06-07 | 2019-07-05 | 杨玲 | A kind of light adjusting controller and lamp light control system based on Novel electric line of force carrier wave |
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Application publication date: 20120919 |