CN104244536A - Digital dimming circuit of digital-display LED operating astral lamp - Google Patents
Digital dimming circuit of digital-display LED operating astral lamp Download PDFInfo
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- CN104244536A CN104244536A CN201410514937.0A CN201410514937A CN104244536A CN 104244536 A CN104244536 A CN 104244536A CN 201410514937 A CN201410514937 A CN 201410514937A CN 104244536 A CN104244536 A CN 104244536A
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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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- Emergency Protection Circuit Devices (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a digital dimming circuit of a digital-display LED operating astral lamp. The digital dimming circuit comprises a power source, an electric-focusing power source processing circuit and a power source processing circuit of a light dimming system. An output end of the electric-focusing power source processing circuit is connected with a relay driver, the relay driver is connected with an arc extinction circuit, a focusing motor and a light spot adjusting key, the power source processing circuit of the light dimming system is connected with a microprocessing chip, and the microprocessing chip is connected with a digital-tube state display, a driving board and a lamp control key. The digital dimming circuit is simple in circuit structure, stable in performance, low in cost and high in practicality, luminance display adopts an LED digital tube, tap position display is simple, the digital dimming circuit has ten-tap digital light dimming function, preheating protection is provided for specific cold start, service life of LED is effectively prolonged, an electric focusing structure is separated with a main circuit, and stability of the circuit is improved.
Description
Technical field
The present invention discloses a kind of 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 conveniently can be changed by this function, the control of electromotion focusing circuit is generally associated with light adjusting circuit, when electromotion focusing circuit malfunctions, easily cause the exception of light adjusting circuit, affect the stable of circuit; On the other hand, current LED operation shadowless lamp state display is general adopts the display of LED light-emitting section, and 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: change LED overall current by potentiometer, and each branch circuit parallel connection is in together, and the change of electric current easily causes color colour temperature to change, and because every LED exists performance difference, brightness uniformity is poor.
Summary of the invention
The object of the invention is to overcome above deficiency, providing a kind of circuit to have short circuit, overload protection, anti-reverse protection, digital PWM light modulation, brightness memory function, circuit structure is simple, antijamming capability is strong numeral method LED operation shadowless lamp digital light-adjusting circuit.
Object of the present invention is achieved through the following technical solutions: a kind of numeral method LED operation shadowless lamp digital light-adjusting circuit, comprise power supply, the power supply processing circuit of electromotion focusing and the power supply processing circuit of light adjusting system, be connected with relay at the output of the power supply processing circuit of electromotion focusing to drive, 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 with micro-chip processor, micro-chip processor is connected with the display of charactron state, drive plate and signal light control button, power supply is through the overload protection of the power supply processing circuit of electromotion focusing and be delivered to relay driving after suppressing the process of instantaneous interference, the rotating achieving focusing motor after relay drives controls, thus control 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, be delivered to focusing motor to focus, be delivered to hot spot regulating key to regulate hot spot, 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, after micro-chip processor accepts key-press input, luminance state signal is delivered to the display of charactron state, show current operating state through the display of charactron state simultaneously, by brightness drive singal to drive plate, the unlatching of light and strong and weak depth is controlled after the driving process of drive plate, according to the input of button, signal light control button is in order to control mains switch, brightness is lowered, brightness increases.
The advantage that the present invention compared with prior art has is:
Circuit structure is simple, stable performance, cost are low, practical; brightness display adopts LED numeral method; gear display is short and sweet; there are ten grades of digital dimming functions; distinctive cold start preheating protection; can effectively extend 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 system block diagram of the present invention;
Fig. 2 is electrical schematic diagram of the present invention;
Number in the figure: the driving of the power supply processing circuit of 1-power supply, 2-electromotion focusing, the power supply processing circuit of 3-light adjusting system, 4-relay, 5-crowbar circuit, 6-focusing motor, 7-hot spot regulating key, 8-micro-chip processor, the display of 9-charactron state, 10-drive plate, 11-signal light control button.
embodiment:
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 only for explaining the present invention, does not form limiting the scope of the present invention.
As Fig. 1, Fig. 2 shows a kind of execution mode of a kind of numeral method of the present invention LED operation shadowless lamp digital light-adjusting circuit: comprise power supply 1, the power supply processing circuit 2 of electromotion focusing and the power supply processing circuit 3 of light adjusting system, be connected with relay at the output of the power supply processing circuit 2 of electromotion focusing and drive 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 with micro-chip processor 8, micro-chip processor 8 is connected with charactron state display 9, drive plate 10 and signal light control button 11, power supply 1 is through the overload protection of the power supply processing circuit 2 of electromotion focusing and be delivered to relay driving 4 after suppressing the process of instantaneous interference, the rotating achieving focusing motor after relay drives 4 controls, thus control 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, be delivered to focusing motor 6 to focus, be delivered to hot spot regulating key 7 pairs of hot spots to regulate, 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 for accepting key-press input signal, output drive signal, output state display, after micro-chip processor 8 accepts key-press input, luminance state signal is delivered to charactron state display 9, show current operating state through charactron state display 9 simultaneously, by brightness drive singal to drive plate 10, the unlatching of light and strong and weak depth is controlled after the driving process of drive plate 10, according to the input of button, signal light control button 11 is in order to control mains switch, brightness is lowered, brightness increases.
The power supply of specific implementation step: 24V is divided into two-way and delivers to independently power supply processing section, the power supply process of dimming portion: 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, for light adjusting circuit provides power supply, C1 is power filtering capacitor, and C2, C3 play High frequency filter effect in circuit, TVS1 is Transient Suppression Diode, can effectively suppress instantaneous interference level, DS1 is state display luminous tube, when mains 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, the value of automatic reading memory, realize brightness read functions, micro-process is according to brightness value, control the power exporting digital PWM signal, thus control bulb brightness, when bulb cold start-up, within the time of 1 second, first reduce bulb brightness, set point 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 is treated to 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 S 4, relay K 1 adhesive, motor B1 rotates forward, driving mechanical focusing structure, realize hot spot and increase function, when pressing switch S 5, 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 the spark of electric motor starting or stopping moment relay contact, to extend relay useful 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 cover circuit are completely independent, light adjusting system adopts numeral method, when numeral method 0, represent shadowless lamp to be energized, currently be in off status, when display 1-9, A, corresponding 10 brightness regulation scopes, brightness value is by micro-chip processor automatic Memory, automatic acquisition 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 preheating in 1 second buffering; can effectively extend 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, antijamming capability are strong.
Claims (3)
1. a numeral method LED operation shadowless lamp digital light-adjusting circuit, it is characterized in that: comprise power supply (1), the power supply processing circuit (2) of electromotion focusing and the power supply processing circuit (3) of light adjusting system, be connected with relay at the output of the power supply processing circuit (2) of described electromotion focusing and drive (4), described 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 described light adjusting system is connected with micro-chip processor (8), described micro-chip processor (8) is connected with charactron state display (9), drive plate (10) and signal light control button (11).
2. a kind of numeral method LED operation shadowless lamp digital light-adjusting circuit according to claim 1, it is characterized in that: described power supply (1) is through the overload protection of the power supply processing circuit (2) of electromotion focusing and be delivered to relay driving (4) after suppressing the process of instantaneous interference, the rotating achieving focusing motor after (4) is driven to control through relay, thus control 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, be delivered to focusing motor (6) to focus, be delivered to hot spot regulating key (7) to regulate hot spot, described 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 for accepting key-press input signal, output drive signal, output state display, after described micro-chip processor (8) accepts key-press input, luminance state signal is delivered to charactron state display (9), show current operating state through charactron state display (9) simultaneously, by brightness drive singal to drive plate (10), the unlatching of light and strong and weak depth is controlled after the driving process of drive plate (10), according to the input of button.
3. a kind of numeral method LED operation shadowless lamp digital light-adjusting circuit according to claim 2, is characterized in that: described signal light control button (11) in order to control mains switch, brightness attenuating, 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104244536A true CN104244536A (en) | 2014-12-24 |
| CN104244536B 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) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| WO2016050108A1 (en) * | 2014-09-30 | 2016-04-07 | 南通医疗器械有限公司 | Digital dimming circuit of digital-display led operating astral lamp |
| CN107726177A (en) * | 2016-08-10 | 2018-02-23 | 安钛医疗设备股份有限公司 | Operating lamp with luminous intensity fine adjustment function |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 | Priority date | Publication date | Assignee | Title |
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| WO2016050108A1 (en) * | 2014-09-30 | 2016-04-07 | 南通医疗器械有限公司 | Digital dimming circuit of digital-display led operating astral lamp |
| 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 |
| CN107726177A (en) * | 2016-08-10 | 2018-02-23 | 安钛医疗设备股份有限公司 | Operating lamp with luminous intensity fine adjustment 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016050108A1 (en) | 2016-04-07 |
| CN104244536B (en) | 2016-06-08 |
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