CN110582138A - light modulator - Google Patents
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- CN110582138A CN110582138A CN201910792302.XA CN201910792302A CN110582138A CN 110582138 A CN110582138 A CN 110582138A CN 201910792302 A CN201910792302 A CN 201910792302A CN 110582138 A CN110582138 A CN 110582138A
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- resistor
- optocoupler
- capacitor
- triode
- dimmer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses a dimmer, which comprises a microprocessor, a zero-cross comparison circuit and a dimming driving circuit, wherein the microprocessor is respectively connected with the zero-cross comparison circuit and the dimming driving circuit. The invention can adjust the light brightness through the zero-cross comparison circuit and the dimming drive circuit, and can also communicate with external equipment, detect the voltage and the current of alternating current and monitor the power consumption of the whole equipment; and communicating each dimming unit and sending an adjusting command. The invention can be widely applied to the field of dimmers.
Description
Technical Field
The invention relates to the technical field of electronic circuits, in particular to a dimmer.
Background
The existing dimmer is mainly used for dimming a lamp to create a proper atmosphere according to different occasions, but the existing dimmer does not have a zero-crossing detection function.
Disclosure of Invention
In order to solve the above technical problem, an object of the present invention is to provide a dimmer capable of providing zero-cross detection.
The technical scheme adopted by the invention is as follows:
A dimmer comprises a microprocessor, a communication module, a zero-cross comparison circuit and a dimming drive circuit, wherein the microprocessor is respectively connected with the communication module, the zero-cross comparison circuit and the dimming drive circuit.
As a further improvement of the dimmer, the microprocessor is further connected with a short-circuit protection module.
as a further improvement of the dimmer, the first output end of the microprocessor is connected with a dimming brightness display module.
As a further improvement of the dimmer, a second output terminal of the microprocessor is connected to a voltage-current display module.
As a further improvement of the dimmer, the zero-cross comparison circuit includes a first resistor, a second resistor, a third resistor, a TVS tube, a first optocoupler, a first capacitor, a second capacitor, a third capacitor and a first triode, a first end of the first resistor is connected to a power supply terminal, a second end of the first resistor is connected to a first input terminal of the first optocoupler through the TVS tube, a collector of the first optocoupler is connected to the power supply terminal through the second resistor, an emitter of the first optocoupler is connected to the collector of the first optocoupler through the first capacitor, an emitter of the first optocoupler is connected to the power supply terminal through the second capacitor, a collector of the first optocoupler is connected to a base of the first triode through the third resistor, an emitter of the first triode is connected to the emitter of the first optocoupler, and an emitter of the first triode is connected to the collector of the first triode through the third capacitor, and the collector of the first triode is connected with the microprocessor, and the second input end of the first optocoupler is connected with an N line.
As a further improvement of the dimmer, the dimming driving module includes a second triode, an eighth resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a fourth capacitor, a fifth capacitor, a second optocoupler, a diode and a thyristor, a base of the second triode is connected with the microprocessor through the eighth resistor, a collector of the second triode is connected with a positive terminal of the diode and a second output terminal of the second optocoupler respectively, a negative terminal of the diode is connected with a power supply terminal through the fourth resistor, a negative terminal of the diode is connected with a first input terminal of the second optocoupler, a first output terminal of the second optocoupler is connected with a first terminal of the thyristor, a second terminal of the thyristor is connected with a first terminal of the fifth resistor and a first terminal of the sixth resistor respectively, a second output terminal of the second optocoupler is connected with a first terminal of the seventh resistor, the second end of the sixth resistor and the second end of the seventh resistor are both connected with the first end of the fourth capacitor, the second end of the fifth resistor is connected with the first end of the fifth capacitor, and the second end of the fourth capacitor is connected with the second end of the fifth capacitor.
The invention has the beneficial effects that:
The dimmer can adjust the brightness of the light through the zero-crossing comparison circuit and the dimming driving circuit, can also communicate with external equipment, detect the voltage and the current of alternating current and monitor the power consumption of the whole equipment; and communicating each dimming unit and sending an adjusting command.
Drawings
FIG. 1 is a schematic diagram of a dimmer according to the present invention;
FIG. 2 is a circuit schematic of a zero-crossing comparison circuit in a dimmer of the present invention;
Fig. 3 is a schematic circuit diagram of a dimming driving module in a dimmer according to the present invention.
Detailed Description
the following further describes embodiments of the present invention with reference to the accompanying drawings:
Referring to fig. 1, the present embodiment provides a dimmer including a microprocessor, a communication module, a zero-cross comparison circuit, and a dimming driving circuit, wherein the microprocessor is connected to the communication module, the zero-cross comparison circuit, and the dimming driving circuit, respectively.
The dimmer in this embodiment can be applied to in the total system of adjusting luminance, and the total system of adjusting luminance includes main dimmer and sub-dimmer, main dimmer is connected through communication module with sub-dimmer inside, main dimmer can also be connected with external equipment through communication module, sub-dimmer adjusts luminance to lamps and lanterns equipment.
The dimmer can adjust the brightness of the light through the zero-crossing comparison circuit and the dimming driving circuit, can also communicate with external equipment, detect the voltage and the current of alternating current and monitor the power consumption of the whole equipment; and communicating each dimming unit and sending an adjusting command.
In a further preferred embodiment, the microprocessor is further connected with a short-circuit protection module.
In a further preferred embodiment, the first output terminal of the microprocessor is connected to a dimming brightness display module.
In a further preferred embodiment, the second output terminal of the microprocessor is connected to a voltage/current display module. The dimmer in this embodiment can pass the voltage current display module
Referring to fig. 2, in a further preferred embodiment, the zero-cross comparison circuit in this embodiment includes a first resistor R1, a second resistor R2, a third resistor R3, a TVS tube T1, a first optocoupler U1, a first capacitor C1, a second capacitor C2, a third capacitor C3, and a first transistor Q1, a first end of the first resistor R1 is connected to a power supply terminal, a second end of the first resistor R1 is connected to a first input terminal of a first optocoupler U1 through a TVS tube T1, a collector of the first optocoupler U1 is connected to the power supply terminal through the second resistor R42, an emitter of the first optocoupler U1 is connected to a collector of a first optocoupler U1 through a first capacitor C1, an emitter of the first optocoupler U1 is connected to a collector of the second capacitor C2, a collector of the first optocoupler U1 is connected to a collector of the first optocoupler U867, and an emitter 1 of the first optocoupler U5972 is connected to the emitter of the first transistor Q1, the emitting electrode of the first triode Q1 is further connected with the collecting electrode of the first triode Q1 through a third capacitor C3, the collecting electrode of the first triode Q1 is connected with the microprocessor, and the second input end of the first optocoupler U1 is connected with an N line.
In this embodiment, a 220VAC live line L is connected to the Lin terminal, and a neutral line N is connected to the N terminal. The first resistor R1 is a current limiting resistor, and the TVS transistor T1 is used to prevent damage of the surge pulse. The first mentionedThe optocoupler U1 is a bidirectional input optocoupler, the current with the positive half period of the alternating current flows from Lin, and when the voltage at two ends of the light emitting diode D1 in the first optocoupler U1 is greater than the starting voltage UONWhen the voltage is high, the first optocoupler U1 is switched on, and the first triode Q1 is switched off; the current of the negative half period flows from N, and when the voltage at two ends of the light emitting diode D1 in the first optocoupler U1 is greater than the starting voltage UONWhen the first optocoupler U1 is on, the first triode Q1 is off. But near the zero point of the alternating current, the voltage U < U of the light emitting diode D1 of the first optocoupler U1oNWhen the voltage is high, the first optocoupler U1 is not connected, the first triode Q1 is connected, and the output end PD3 is at a low level. When the microprocessor detects a low level, the low level is an alternating current zero point.
Referring to fig. 3, in a further preferred embodiment, the dimming driving module in this embodiment includes a second transistor Q2, an eighth resistor R8, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a fourth capacitor C4, a fifth capacitor C5, a second optocoupler U2, a diode D1, and a thyristor K1, wherein a base of the second transistor Q2 is further connected to the microprocessor through the eighth resistor R8, a collector of the second transistor Q2 is respectively connected to a positive terminal of the diode D1 and a second output terminal of the second optocoupler U2, a negative terminal of the diode D1 is further connected to a power supply terminal through the fourth resistor R4, a negative terminal of the diode D1 is connected to a first input terminal of the second optocoupler U2, a first output terminal of the second transistor U2 is connected to a first terminal of the thyristor K1, a second terminal of the thyristor K1 is connected to a first terminal of the fifth resistor R6, a second output end of the second optical coupler U2 is connected with a first end of a seventh resistor R7, a second end of the sixth resistor R6 and a second end of the seventh resistor R7 are both connected with a first end of a fourth capacitor C4, a second end of the fifth resistor R5 is connected with a first end of a fifth capacitor C5, and a second end of the fourth capacitor C4 is connected with a second end of the fifth capacitor C5.
In this embodiment, before the zero point of 220VAC, when the PB0 end outputs a high level, the second triode Q2 is turned on, the second optocoupler U2 is turned on, the thyristor K1 is also turned on, and the LED lamp is turned on; then when the PB0 end outputs low level, the second triode Q2 is cut off, the second optocoupler U2 is not conducted, but the controlled silicon K1 is still conducted, the controlled silicon K1 is not cut off until the next zero crossing point of the alternating current, and the LED lamp is turned off.
Further, the device also comprises a 485 communication circuit, which is used for realizing communication with external equipment, detecting the voltage and current of alternating current and monitoring the power consumption of the whole equipment; and communicating each dimming unit and sending an adjusting command.
In this embodiment, the 485 communication module can realize communication connection with (a gateway or an upper computer) in a 485 communication mode.
according to the invention, the light brightness can be adjusted through the zero-cross comparison circuit and the dimming driving circuit, and the light brightness adjusting circuit can also be communicated with external equipment to detect the voltage and the current of alternating current and monitor the power consumption of the whole equipment; and communicating each dimming unit and sending an adjusting command.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A dimmer, characterized by: the dimming circuit comprises a microprocessor, a communication module, a zero-crossing comparison circuit and a dimming driving circuit, wherein the microprocessor is respectively connected with the communication module, the zero-crossing comparison circuit and the dimming driving circuit.
2. A dimmer as defined in claim 1, wherein: the microprocessor is also connected with a short-circuit protection module.
3. A dimmer as defined in claim 1, wherein: the first output end of the microprocessor is connected with a dimming brightness display module.
4. A dimmer as defined in claim 1, wherein: and a second output end of the microprocessor is connected with a voltage and current display module.
5. A dimmer as defined in claim 1, wherein: the zero-crossing comparison circuit comprises a first resistor, a second resistor, a third resistor, a TVS (transient voltage suppressor), a first optocoupler, a first capacitor, a second capacitor, a third capacitor and a first triode, wherein a first end of the first resistor is connected with a power supply end, a second end of the first resistor is further connected with a first input end of the first optocoupler through the TVS, a collector electrode of the first optocoupler is further connected with the power supply end through the second resistor, an emitter electrode of the first optocoupler is connected with the collector electrode of the first optocoupler through the first capacitor, an emitter electrode of the first optocoupler is further connected with the power supply end through the second capacitor, a collector electrode of the first optocoupler is connected with a base electrode of the first triode through the third resistor, an emitter electrode of the first triode is connected with the emitter electrode of the first optocoupler, and an emitter electrode of the first triode is further connected with the collector electrode of the first triode through the third capacitor, and the collector of the first triode is connected with the microprocessor, and the second input end of the first optocoupler is connected with an N line.
6. a dimmer as defined in claim 1, wherein: the dimming driving module comprises a second triode, an eighth resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a fourth capacitor, a fifth capacitor, a second optocoupler, a diode and a controlled silicon, wherein a base electrode of the second triode is further connected with the microprocessor through the eighth resistor, a collector electrode of the second triode is respectively connected with a positive electrode end of the diode and a second output end of the second optocoupler, a negative electrode end of the diode is further connected with a power supply end through the fourth resistor, a negative electrode end of the diode is connected with a first input end of the second optocoupler, a first output end of the second optocoupler is connected with a first end of the controlled silicon, a second end of the controlled silicon is respectively connected with a first end of the fifth resistor and a first end of the sixth resistor, a second output end of the second optocoupler is connected with a first end of the seventh resistor, and a second end of the sixth resistor and a second end of the seventh resistor are both connected with a first end of the fourth capacitor, and the second end of the fifth resistor is connected with the first end of a fifth capacitor, and the second end of the fourth capacitor is connected with the second end of the fifth capacitor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910431171 | 2019-05-22 | ||
| CN2019104311712 | 2019-05-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110582138A true CN110582138A (en) | 2019-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910792302.XA Pending CN110582138A (en) | 2019-05-22 | 2019-08-26 | light modulator |
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| CN (1) | CN110582138A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201656491U (en) * | 2010-04-29 | 2010-11-24 | 洛阳润星电子科技有限公司 | Intelligent electric power regulator |
| CN201976115U (en) * | 2011-01-07 | 2011-09-14 | 苏州三星电子有限公司 | Communication circuit |
| CN102256407A (en) * | 2010-05-21 | 2011-11-23 | 王中美 | Intelligent device and method for driving LED street lamps at constant current by directly utilizing commercial power |
| CN102890184A (en) * | 2012-10-25 | 2013-01-23 | 德讯科技股份有限公司 | Zero-crossing detection circuit based on optocoupler |
| CN104703363A (en) * | 2015-03-27 | 2015-06-10 | 南京天溯自动化控制系统有限公司 | Intelligent universal light modulator |
| CN105848389A (en) * | 2016-05-20 | 2016-08-10 | 哈尔滨电工仪表研究所 | Networkable front phase cut dimming touch switch |
| CN106160559A (en) * | 2016-07-04 | 2016-11-23 | 苏州迈力电器有限公司 | There is the pure sine wave inverter of high frequency chopping current sample input isolation features |
| CN207011059U (en) * | 2017-06-21 | 2018-02-13 | 广州科宗智能科技有限公司 | A kind of light-adjusting switch board system of adjustable a variety of light fixtures |
-
2019
- 2019-08-26 CN CN201910792302.XA patent/CN110582138A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201656491U (en) * | 2010-04-29 | 2010-11-24 | 洛阳润星电子科技有限公司 | Intelligent electric power regulator |
| CN102256407A (en) * | 2010-05-21 | 2011-11-23 | 王中美 | Intelligent device and method for driving LED street lamps at constant current by directly utilizing commercial power |
| CN201976115U (en) * | 2011-01-07 | 2011-09-14 | 苏州三星电子有限公司 | Communication circuit |
| CN102890184A (en) * | 2012-10-25 | 2013-01-23 | 德讯科技股份有限公司 | Zero-crossing detection circuit based on optocoupler |
| CN104703363A (en) * | 2015-03-27 | 2015-06-10 | 南京天溯自动化控制系统有限公司 | Intelligent universal light modulator |
| CN105848389A (en) * | 2016-05-20 | 2016-08-10 | 哈尔滨电工仪表研究所 | Networkable front phase cut dimming touch switch |
| CN106160559A (en) * | 2016-07-04 | 2016-11-23 | 苏州迈力电器有限公司 | There is the pure sine wave inverter of high frequency chopping current sample input isolation features |
| CN207011059U (en) * | 2017-06-21 | 2018-02-13 | 广州科宗智能科技有限公司 | A kind of light-adjusting switch board system of adjustable a variety of light fixtures |
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Application publication date: 20191217 |