CN205566739U - Linear dimming system based on microprocessor - Google Patents

Linear dimming system based on microprocessor Download PDF

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Publication number
CN205566739U
CN205566739U CN201620277512.7U CN201620277512U CN205566739U CN 205566739 U CN205566739 U CN 205566739U CN 201620277512 U CN201620277512 U CN 201620277512U CN 205566739 U CN205566739 U CN 205566739U
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China
Prior art keywords
controlled
control
zero
microprocessor
loading
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CN201620277512.7U
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Chinese (zh)
Inventor
曹磊
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SHANGHAI SINOMCU MICROELECTRONICS Co.,Ltd.
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Shanghai Lianxi Intelligent Technology Co Ltd
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Abstract

The utility model discloses a linear dimming system based on microprocessor, including rectification part, zero -crossing detection part, control section, being controlled the subtotal loading section, the rectification becomes the forward electricity with municipality's electric rectification, and the zero -crossing detection part detects the zero crossing of alternating current, and control section reckons by time after detecting the zero cross signal to input signal control is controlled the part, makes the controlled work of loading section, control section adopts microprocessor MCU to control, be controlled some adoption silicon controlled rectifiers. The utility model provides an adopt the linear LED lamp dimming control system of two line formulas, microprocessor MCU passes through the detection to the AC input voltage phase angle, judges the frequency of operation of alternating current, the time of calculating the zero crossing to the bright of LED of controlling corresponding period number is gone out.

Description

A kind of linearity light adjusting system based on microprocessor
Technical field
This utility model relates to a kind of light adjusting system, a kind of linearity light adjusting system based on microprocessor.
Background technology
Fluorescent lamp, LED, in the substantial amounts of application of the occasion such as family, hotel, are energy-conserving light sources the most important under energy-conservation background.The light regulating technology of lamp is divided into two classifications at present, and one is four-wire type, the light modulation of such as DALI system, and this mode can be addressed and the control of precision, however it is necessary that user joins control line again.Another is to use twin wire light modulation, such as controllable silicon light modulation.The when that but this brightness adjustment control mode working under fluorescent lamp ballast or the normal module drive of LED conventional switching power supply, owing to employing controllable silicon chopper circuit, therefore can cause continuing bigger electromagnetic interference, and due under the situation of voltage pulsation, can fluctuate and cause the change of lamp brightness in phase angle, its control mode all uses Analog control, therefore can not be linear be controlled, and control accuracy is the most limited.
Utility model content
The purpose of this utility model is to provide a kind of linearity light adjusting system based on microprocessor, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, the following technical scheme of this utility model offer:
A kind of linearity light adjusting system based on microprocessor, including rectifying part, zero passage detection part, control part, controlled part and loading section, rectifying part is that commercial power rectification becomes forward electricity, the zero crossing of zero passage detection part detection alternating current, control part carries out timing after zero cross signal being detected, and output signal controls controlled part, make the controlled work of loading section.
As further program of the utility model: described control part uses Micro-processor MCV to be controlled.
As this utility model further scheme: described controlled part uses controllable silicon.
Compared with prior art, the beneficial effects of the utility model are: this utility model provides one to use twin wire linear LED dimming control system, Micro-processor MCV is by the detection to AC-input voltage phase angle, judge the operating frequency of alternating current, calculate the time of zero crossing, thus control the light on and off of the LED of corresponding section.
Accompanying drawing explanation
Fig. 1 is the structural schematic block diagram of linearity light adjusting system based on microprocessor;
Fig. 2 is the circuit diagram of a kind of embodiment using the design of this utility model system.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
Refer to Fig. 1, in this utility model embodiment, a kind of linearity light adjusting system based on microprocessor, including rectifying part, zero passage detection part, control part, controlled part and loading section, rectifying part is that commercial power rectification becomes forward electricity, the zero crossing of zero passage detection part detection alternating current, and control part carries out timing after zero cross signal being detected, and output signal controls controlled part, make the controlled work of loading section;The described part that controls uses Micro-processor MCV to be controlled;Described controlled part uses controllable silicon.
Operation principle of the present utility model is: refer to Fig. 1, this utility model includes rectifying part, zero passage detection part, control part, controlled part and loading section, rectifying part is that commercial power rectification becomes forward electricity, the zero crossing of zero passage detection part detection alternating current, control part carries out timing after zero cross signal being detected, and output signal controls controlled part, make loading section according to certain rule work;The described part that controls uses Micro-processor MCV to be controlled;Described controlled part uses controllable silicon.
Fig. 2 is to have the one of which light adjusting circuit figure according to the design of this utility model system, containing a microprocessor and its several power tubes controlled in the program, the simulation model detected is calculated, produce the signal controlling to trigger, difference according to input AC electricity phase place is respectively turned on the power tube of corresponding section, reaches segmentation and lights the function of LED.
Being exemplified by the circuit of 4 groups of LED in Fig. 2, circuit input AC terminates into during with controllable silicon dimmer, when dimmer fully opens, circuit receives alternating current, MCU therein can pass through zero cross detection circuit, and detection alternating current is by silicon controlled starting point, and starts timing.
Such as: when ON time is T1, by silicon controlled crest voltage be N lie prostrate.When ON time is T2, being that 2N lies prostrate with this stepping by silicon controlled crest voltage, N volt is the VF value of one group of LED, and when the controlled silicon conducting time is less than T1, MCU controls the power tube Q4 cut-off in Fig. 2, and LED (D1, D2, D3, D4) does not works;When being less than T2 more than T1 between when closed, MCU controls power tube Q4, Q1 conducting in Fig. 2, and D1 group LED is bright;When being less than T3 more than T2 between when closed, MCU controls power tube Q4, Q2 conducting in Fig. 2, Q3 power tube ends, D1 group and D2 group LED are bright, the like, so can ensure that LED is on the premise of meeting VF value, stable, linear progressively light on and off, the mode making controllable silicon light modulation the most most economical reaches the effect of the best price/performance ratio, and the circuit being made up of optocoupler U1, optocoupler U2, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, electric capacity C1, electric capacity C2, electric capacity C3 maintains whole system constant current operation.
It is obvious to a person skilled in the art that this utility model is not limited to the details of above-mentioned one exemplary embodiment, and in the case of without departing substantially from spirit or essential attributes of the present utility model, it is possible to realize this utility model in other specific forms.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims rather than described above, it is intended that all changes fallen in the implication of equivalency and scope of claim included in this utility model.Should not be considered as limiting involved claim by any reference in claim.
In addition, it is to be understood that, although this specification is been described by according to embodiment, but the most each embodiment only comprises an independent technical scheme, this narrating mode of description is only for clarity sake, description should can also be formed, through appropriately combined, other embodiments that it will be appreciated by those skilled in the art that as an entirety, the technical scheme in each embodiment by those skilled in the art.

Claims (3)

1. a linearity light adjusting system based on microprocessor, including rectifying part, zero passage detection part, control part, controlled part and loading section, it is characterized in that, rectifying part is that commercial power rectification becomes forward electricity, the zero crossing of zero passage detection part detection alternating current, control part carries out timing after zero cross signal being detected, and output signal controls controlled part, makes the controlled work of loading section.
Linearity light adjusting system based on microprocessor the most according to claim 1, it is characterised in that described control part uses Micro-processor MCV to be controlled.
Linearity light adjusting system based on microprocessor the most according to claim 1, it is characterised in that described controlled part uses controllable silicon.
CN201620277512.7U 2016-04-06 2016-04-06 Linear dimming system based on microprocessor Active CN205566739U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620277512.7U CN205566739U (en) 2016-04-06 2016-04-06 Linear dimming system based on microprocessor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620277512.7U CN205566739U (en) 2016-04-06 2016-04-06 Linear dimming system based on microprocessor

Publications (1)

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CN205566739U true CN205566739U (en) 2016-09-07

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105682304A (en) * 2016-04-06 2016-06-15 上海联矽智能科技有限公司 Linear dimming method based on microprocessor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105682304A (en) * 2016-04-06 2016-06-15 上海联矽智能科技有限公司 Linear dimming method based on microprocessor

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TR01 Transfer of patent right

Effective date of registration: 20210628

Address after: 201203 Building 2, 439 Chunxiao Road, Pudong New Area pilot Free Trade Zone, Shanghai

Patentee after: SHANGHAI SINOMCU MICROELECTRONICS Co.,Ltd.

Address before: Room 345, block B, building 1, 977 Shangfeng Road, Pudong New Area, Shanghai, 200120

Patentee before: SHANGHAI SINO-SAGE INTELLIGENT TECHNOLOGY Co.,Ltd.

TR01 Transfer of patent right