CN104244536B - A kind of numeral method LED operation shadowless lamp digital light-adjusting circuit - Google Patents
A kind of numeral method LED operation shadowless lamp digital light-adjusting circuit Download PDFInfo
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- CN104244536B CN104244536B CN201410514937.0A CN201410514937A CN104244536B CN 104244536 B CN104244536 B CN 104244536B CN 201410514937 A CN201410514937 A CN 201410514937A CN 104244536 B CN104244536 B CN 104244536B
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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
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
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- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
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Abstract
The invention discloses a kind of numeral method LED operation shadowless lamp digital light-adjusting circuit, power supply processing circuit including power supply, the power supply processing circuit of electromotion focusing and light adjusting system, outfan at the power supply processing circuit of electromotion focusing is connected to relay and drives, relay drives and is connected with crowbar circuit, focusing motor and hot spot regulating key, the power supply processing circuit of light adjusting system is connected to micro-chip processor, micro-chip processor is connected to charactron state and shows, drive plate and signal light control button. The present invention has that circuit structure is simple, stable performance, cost are low, practical; brightness display adopts LED numeral method; gear shows short and sweet; there are ten grades of digital dimming functions; distinctive cold start preheating protection; can effectively extending the LED bulb life-span, electromotion focusing structure adopts and main circuit separate type, the advantage that improve the stability of circuit.
Description
Technical field
Disclosure one operation shadowless lamp, particularly a kind of numeral method LED operation shadowless lamp digital light-adjusting circuit.
Background technology
Current LED operation shadowless lamp is general all with electromotion focusing function, the size of shadowless lamp hot spot can be conveniently changed by this function, the control of electromotion focusing circuit is generally associated with light adjusting circuit, when electromotion focusing circuit malfunctions, easily caused by the exception of light adjusting circuit, affect stablizing of circuit; On the other hand, current LED operation shadowless lamp state shows that being generally adopted LED light-emitting section shows, gear does not have digital type directly perceived, and liquid crystal price is higher, and high and low temperature resistance is poor, and control circuit is more complicated, and performance is good not; Simulation light modulating LED light modulation shortcoming is: changing LED overall current by potentiometer, each branch circuit parallel connection is in together, and the change of electric current changes easily caused by color colour temperature, and because every LED exists performance difference, brightness uniformity is poor.
Summary of the invention
The invention aims to overcome above deficiency, it is provided that a kind of circuit has short circuit, overload protection, anti-reverse protection, digital PWM light modulation, brightness memory function, circuit structure is simple, capacity of resisting disturbance is strong numeral method LED operation shadowless lamp digital light-adjusting circuit.
The purpose of the present invention is achieved through the following technical solutions: a kind of numeral method LED operation shadowless lamp digital light-adjusting circuit, including power supply, the power supply processing circuit of electromotion focusing and the power supply processing circuit of light adjusting system, outfan at the power supply processing circuit of electromotion focusing is connected to relay and drives, relay drives and crowbar circuit, focusing motor and hot spot regulating key are connected, the power supply processing circuit of light adjusting system is connected to micro-chip processor, micro-chip processor is connected to charactron state show, drive plate and signal light control button, power supply is delivered to relay after the overload protection of the power supply processing circuit of electromotion focusing and the process of suppression instantaneous interference and drives, the rotating achieving focusing motor after relay drives controls, thus controlling the size of operation shadowless lamp hot spot, then divide three tunnels to be delivered to crowbar circuit respectively and carry out extinguishing arc process, it is delivered to focusing motor to focus, it is delivered to hot spot regulating key hot spot is adjusted, power supply delivers to micro-chip processor through the power supply processing circuit of light adjusting system, micro-chip processor is used for accepting key-press input signal, output drive signal, output state display signal, after micro-chip processor accepts key-press input, luminance state signal is delivered to charactron state show, show current duty through the display of charactron state simultaneously, brightness drive signal to driving plate, the unlatching of light and strong and weak depth is controlled after the driving of plate of overdriving processes, input according to button, signal light control button is in order to control on and off switch, brightness is lowered, brightness increases.
The present invention compared with prior art have the advantage that into:
Circuit structure is simple, stable performance, cost are low, practical; brightness display adopts LED numeral method; gear shows short and sweet; there are ten grades of digital dimming functions; distinctive cold start preheating protection; can effectively extending the LED bulb life-span, electromotion focusing structure adopts and main circuit separate type, improves the stability of circuit.
Accompanying drawing illustrates:
Fig. 1 is the system block diagram of the present invention;
Fig. 2 is the electrical schematic diagram of the present invention;
Number in the figure: the driving of 1-power supply, the power supply processing circuit of 2-electromotion focusing, the power supply processing circuit of 3-light adjusting system, 4-relay, 5-crowbar circuit, 6-focus motor, 7-hot spot regulating key, 8-micro-chip processor, 9-charactron state shows, 10-drives plate, 11-signal light control button.
Detailed description of the invention:
In order to deepen the understanding of the present invention, below in conjunction with embodiment and accompanying drawing, the invention will be further described, and this embodiment is only used for explaining the present invention, is not intended that limiting the scope of the present invention.
Such as Fig. 1, Fig. 2 illustrates a kind of embodiment of the present invention a kind of numeral method LED operation shadowless lamp digital light-adjusting circuit: include power supply 1, the power supply processing circuit 2 of electromotion focusing and the power supply processing circuit 3 of light adjusting system, outfan at the power supply processing circuit 2 of electromotion focusing is connected to relay and drives 4, relay drives 4 and crowbar circuit 5, focusing motor 6 and hot spot regulating key 7 are connected, the power supply processing circuit 3 of light adjusting system is connected to micro-chip processor 8, micro-chip processor 8 is connected to charactron state and shows 9, drive plate 10 and signal light control button 11, power supply 1 is delivered to relay after the overload protection of the power supply processing circuit 2 of electromotion focusing and the process of suppression instantaneous interference and drives 4, the rotating achieving focusing motor after relay drives 4 controls, thus controlling the size of operation shadowless lamp hot spot, then divide three tunnels to be delivered to crowbar circuit 5 respectively and carry out extinguishing arc process, it is delivered to focusing motor 6 to focus, it is delivered to hot spot regulating key 7 hot spot is adjusted, power supply 1 delivers to micro-chip processor 8 through the power supply processing circuit 3 of light adjusting system, micro-chip processor 8 is used for accepting key-press input signal, output drive signal, output state display signal, after micro-chip processor 8 accepts key-press input, luminance state signal is delivered to charactron state and shows 9, show, through charactron state, the duty that 9 displays are current simultaneously, brightness drive signal to driving plate 10, the unlatching of light and strong and weak depth is controlled after the driving of plate 10 of overdriving processes, input according to button, signal light control button 11 is in order to control on and off switch, brightness is lowered, brightness increases.
Implement step: the power supply of 24V is divided into two-way and delivers to independent power supply process part, the power supply of dimming portion processes: F1 plays short circuit, overload protective function, D1 prevents electric power polarity from connecing instead, and R1 can reduce the pressure drop of power supply voltage stabilizing chip U1, reduces its heating, U1 can by voltage stabilization at 5V, thering is provided power supply for light adjusting circuit, C1 is power filtering capacitor, and C2, C3 play High frequency filter effect in circuit, TVS1 is Transient Suppression Diode, it is possible to effectively suppress instantaneous interference level, DS1 is state display luminous tube, when on and off switch S1 presses, open shadowless lamp, again press closedown, press S2 switch and realize brightness increase function, S3 presses and realizes brightness attenuating function, when brightness number changes, brightness gear value is read by micro-chip processor, memory is in internal storage, when starting shooting next time, automatically the value of memory is read, realize brightness read functions, micro-process is according to brightness value, control the power of output digital PWM signal, thus controlling bulb brightness, when bulb cold start-up, within the time of 1 second, first reduce bulb brightness, setting value is returned to after reaching 1 second, achieve preheating buffering, luminance signal is delivered to drive circuit board through R9 and is realized shadowless lamp brilliance control,The power supply of electromotion focusing part processes as F2, TVS2, F2 plays short circuit, overload protective function, TVS2 is in order to suppress instantaneous interference, D4 plays anti-reverse protective effect, when pressing switch S4, relay K 1 adhesive, motor B1 rotates forward, driving mechanical focusing structure, realize hot spot and increase function, when pressing switch S5, relay K 2 adhesive, motor reverses, realize hot spot reduction capability, wherein D2, D3 is relay fly-wheel diode, C4, R11 is motor crowbar circuit, in order to eliminate electric motor starting or to stop the spark of moment relay contact, to extend relay service life.
This Circuits System by power supply through respectively process after, light adjusting system circuit is delivered on one road, electromotion focusing circuit is delivered on another road, two set circuit are completely independent, light adjusting system adopts numeral method, when numeral method 0, represent shadowless lamp to be energized, it is currently at off status, during display 1-9, A, corresponding 10 brightness regulation scopes, brightness value is by micro-chip processor automatic Memory, automatically obtaining during start next time, micro-chip processor sends digital PWM brightness regulated signal according to brightness gear value and delivers to drive circuit board.
Concrete feature: circuit has short circuit, overload protection, anti-reverse protection, cold start-up have 1 second preheating buffering; can effectively extending the LED bulb life-span, ten grades of charactron brightness display current gear, digital PWM light modulation, brightness memory function, circuit structure is simple, cost is low, stable performance, capacity of resisting disturbance are strong.
Claims (1)
1. a numeral method LED operation shadowless lamp digital light-adjusting circuit, it is characterized in that: include power supply (1), the power supply processing circuit (2) of electromotion focusing and the power supply processing circuit (3) of light adjusting system, outfan at the power supply processing circuit (2) of described electromotion focusing is connected to relay and drives (4), described relay drives (4) and crowbar circuit (8), focusing motor (6) and hot spot regulating key (7) are connected, the power supply processing circuit (3) of described light adjusting system is connected to micro-chip processor (5), described micro-chip processor (5) is connected to charactron state and shows (9), drive plate (10) and signal light control button (11), described power supply (1) is delivered to relay after the overload protection of the power supply processing circuit (2) of electromotion focusing and the process of suppression instantaneous interference and drives (4), the rotating achieving focusing motor after (4) is driven to control through relay, thus controlling the size of operation shadowless lamp hot spot, then three tunnels are divided, one tunnel is delivered to crowbar circuit (8) and carries out extinguishing arc process, one tunnel is delivered to focusing motor (6) and focuses, another road is delivered to hot spot regulating key (7) and hot spot is adjusted, described power supply (1) delivers to micro-chip processor (5) through the power supply processing circuit (3) of light adjusting system, micro-chip processor (5) is used for accepting key-press input signal, output drive signal, output state display signal, after described micro-chip processor (5) accepts key-press input, luminance state signal is delivered to charactron state and shows (9), show that (9) show current duty through charactron state simultaneously, brightness drive signal to driving plate (10), the unlatching of light and strong and weak depth is controlled after the driving of plate of overdriving (10) processes, input according to button, described signal light control button (11) is in order to control on and off switch, brightness is lowered, brightness increases.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410514937.0A CN104244536B (en) | 2014-09-30 | 2014-09-30 | A kind of numeral method LED operation shadowless lamp digital light-adjusting circuit |
| PCT/CN2015/083245 WO2016050108A1 (en) | 2014-09-30 | 2015-07-03 | Digital dimming circuit of digital-display led operating astral lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410514937.0A CN104244536B (en) | 2014-09-30 | 2014-09-30 | A kind of numeral method LED operation shadowless lamp digital light-adjusting circuit |
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| Publication Number | Publication Date |
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| CN104244536A CN104244536A (en) | 2014-12-24 |
| CN104244536B true CN104244536B (en) | 2016-06-08 |
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| CN201410514937.0A Active CN104244536B (en) | 2014-09-30 | 2014-09-30 | A kind of numeral method LED operation shadowless lamp digital light-adjusting circuit |
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| CN (1) | CN104244536B (en) |
| WO (1) | WO2016050108A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104244536B (en) * | 2014-09-30 | 2016-06-08 | 南通医疗器械有限公司 | A kind of numeral method LED operation shadowless lamp digital light-adjusting circuit |
| CN104955223A (en) * | 2015-05-29 | 2015-09-30 | 南通医疗器械有限公司 | Digital tube display LED shadowless lamp circuit with double dimming function |
| CN107726177B (en) * | 2016-08-10 | 2020-10-30 | 安钛医疗设备股份有限公司 | Operating lamp with light intensity fine-tuning function |
| CN109347483B (en) * | 2018-11-30 | 2024-03-22 | 珠海巨晟科技股份有限公司 | Control circuit for IO shared by touch key and nixie tube |
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| Publication number | Publication date |
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| CN104244536A (en) | 2014-12-24 |
| WO2016050108A1 (en) | 2016-04-07 |
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