CN103442488A - Energy saving LED fill light - Google Patents
Energy saving LED fill light Download PDFInfo
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- CN103442488A CN103442488A CN2013103856315A CN201310385631A CN103442488A CN 103442488 A CN103442488 A CN 103442488A CN 2013103856315 A CN2013103856315 A CN 2013103856315A CN 201310385631 A CN201310385631 A CN 201310385631A CN 103442488 A CN103442488 A CN 103442488A
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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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The invention belongs to the technical field of light source control, and relates to an energy saving LED fill light. The energy saving LED fill light comprises a control device, and the control device comprises an alternating current mains supply zero cross detection circuit, a power frequency square signal output circuit and a PWM dimming circuit. A port 1 and a port 2 of a binding post J1 are respectively connected with the two ends of a voltage dependent resistor RV1 of the alternating current mains supply zero cross detection circuit, the two ends of the voltage dependent resistor RV1 are respectively connected with a resistor R1 and a resistor R2 to be in parallel connection with the positive pole and the negative pole of a diode D1, the positive pole and the negative pole of a diode D1 are connected with an input port of a photoelectric coupler U1, and an output port of the photoelectric coupler U1 is connected with a main controller. The port 1 and the port 2 of the binding post J1 are respectively connected with a resistor R4 and a resistor R5 of the power frequency square signal output circuit to be in parallel connection with the positive pole and the negative pole of a diode D2, the positive pole and the negative pole of the diode D2 are connected with a photoelectric coupler U2, and an output port of the photoelectric coupler U2 is connected with a binding post J2. The energy saving LED fill light achieves synchronization with a device, and meanwhile achieves energy saving of a flash light.
Description
Technical field
The present invention relates to a kind of lamp, especially a kind of energy-saving LED light compensating lamp, belong to the light source control technical field.
Background technology
Under the low-light (level) environment, video camera photo-sensitive cell imaging noise is very large.In field of video monitoring, in order low, according under environment, to obtain picture quality preferably, generally can adopt secondary light source to illuminate shooting area.
Because the LED light fixture has that power consumption is low, advantage, the own extensive use in recent years such as long service life, brightness be high, sturdy and durable.But it is large that existing LED light compensating lamp exists power consumption, and caloric value is high, easily causes the LED light decay serious, the life-span such as reduces greatly at the problem, has limited to a certain extent the high-power LED lighting fixture application.
The auxiliary light fixture of mending of another kind of video camera, i.e. photoflash lamp, be video camera need grabgraf as the time light filling, as lightning, glimmer, although be very energy-conservation, it is comparatively serious that it produces light pollution, easily shines into traffic accident etc.
It is convenient that stroboscopic light filling has brightness regulation, the advantage that light pollution is few, apply more and more extensive, but because of stroboscopic light filling lamp actual be the light and shade alternation, its flicker need to expose and synchronize every width image that guarantee photographs and all become clear with video camera.While applying in fields such as electronic police, public security bayonet, intelligent monitorings, need to guarantee that the every width image photographed all should become clear, therefore, while adopting stroboscopic light filling, need to solve stroboscopic light filling and camera exposure stationary problem.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the shortcoming of prior art, provides that a kind of brightness is high, anti-jamming effectiveness good, the light source utilance high and synchronize the strong energy-saving LED light compensating lamp of compatibility with peripheral hardware.
In order to solve above technical problem, the present invention relates to a kind of energy-saving LED light compensating lamp, the LED lamp and the control device that comprise lamp housing and be arranged on lamp housing inside, the LED lamp is connected by wire with control device, electric main zero cross detection circuit, power frequency square-wave signal output circuit and PWM light adjusting circuit that control device comprises master controller, is connected with master controller.
Electric main zero cross detection circuit and power frequency square-wave signal output circuit are connected in binding post J1 in parallel.
The electric main zero cross detection circuit comprises resistance R 1, resistance R 2, diode D1, piezo-resistance RV1 and photoelectrical coupler U1, the port one of binding post J1 is connected with the two ends of piezo-resistance RV1 respectively with port 2, in parallel with diode D1 both positive and negative polarity after the two ends difference contact resistance R1 of piezo-resistance RV1 and resistance R 2, the both positive and negative polarity of diode D1 is connected with the input port of photoelectrical coupler U1, and the output port of photoelectrical coupler U1 is connected with the master controller input.
Power frequency square-wave signal output circuit comprises binding post J2, resistance R 4, resistance R 5, diode D2, optical coupler U2 and binding post J2, in parallel with the both positive and negative polarity of diode D2 after the port one of binding post J1 and port 2 difference contact resistance R4 and resistance R 5, the both positive and negative polarity of diode D2 is connected with the input port of photoelectrical coupler U2, and the output port of photoelectrical coupler U2 is connected with binding post J2.
The pwm signal of PWM light adjusting circuit transmission is that first-harmonic and modulating wave are synthetic, and doubly, modulating wave is the high-frequency signal that duty ratio is 0-255 to the 1-2 that the frequency of first-harmonic is the electric main frequency.
The technical scheme that the present invention further limits is: also comprise the temperature sensing circuit be connected with master controller, temperature sensing circuit is welded on aluminium base, and is prepended in the lamp housing cloche.Temperature sensor is thermistor, and temperature sensing circuit comprises resistance R 20, precision resistance R21 and thermistor R22, and precision resistance R21 and thermistor R22 form bleeder circuit, after bleeder circuit contact resistance R20, with the master controller of lamp housing back, are connected.
Further, also comprise the luminance detection circuit be connected with master controller, luminance detection circuit is welded on aluminium base, and be prepended in described lamp housing cloche, luminance sensor is photodiode, luminance detection circuit comprises luminance sensor D5, precision resistance R24 and resistance R 23, and luminance sensor D5 and precision resistance R24 form bleeder circuit, after bleeder circuit contact resistance R23, with the master controller of lamp housing back, are connected.
Further, also comprise constant-current drive circuit, constant-current drive circuit is connected with master controller by the PWM light adjusting circuit.
Further, the equal TVS transient voltage suppressor diode in parallel of high-powered LED lamp and series connection PTC resettable fuse.
Further, also comprise the RS485 communication interface be connected with master controller.
Further, the control device power supply is the 24V-24V Switching Power Supply, and the first DC power supply of the power supply that opens the light is converted into the 5V DC power supply after the conversion of DC-DC converter, filtering.
The invention has the beneficial effects as follows: the stroboscopic light that the present invention utilizes the constant frequency of electric main that light source is sent keeps synchronizeing with the shutter of video camera, guarantees that the every width image photographed all becomes clear; The present invention utilizes the industrial frequency AC circuit as synchronous and the synchronous common reference source of stroboscopic of exposing, and makes external equipment and this LED light compensating lamp realize wireless connections; The present invention utilizes the characteristic of LED lamp high-speed switch and controller to control lighting constantly and brightness of LED lamp to the adjusting of PWM dim signal, simultaneously, utilize high-speed switch characteristic and the human eye vision of great power LED to persist phenomenon, realize the normal bright effect on human eye perceives with group flashing light, thereby realize energy-conservation, minimizing caloric value; This light compensating lamp is skillfully constructed, and design is simplified rationally, by controlling LED light compensating lamp stroboscopic frequency and brightness, has well solved the disadvantages such as the power consumption that high-powered LED lamp exists always is large, caloric value is high, light decay is serious, the life-span is short.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is TT&C system theory diagram of the present invention.
Fig. 3 is the zero cross detection circuit of electric main of the present invention.
Fig. 4 is power frequency square-wave signal output circuit of the present invention.
Fig. 5 is constant current driving of the present invention and protection module circuit.
Fig. 6 is temperature sensing circuit of the present invention.
Fig. 7 is luminance detection circuit of the present invention.
Fig. 8 is remote control module circuit of the present invention.
Fig. 9 is DC-DC power circuit of the present invention.
Embodiment
embodiment 1
The present embodiment provide a kind of energy-saving LED light compensating lamp, as shown in Figure 1, comprise lamp housing 1, and the LED aluminium base 2 that is located at lamp housing 1 end, the rear portion of lamp housing 1 is provided with Switching Power Supply 7 and AC signal stroboscopic isochronous controller 3; The face bonding of LED aluminium base 2 is connected to some groups of large-power LED light beads and constant-current driven module 4, photodiode 5 and thermistor 6, equal TVS transient voltage suppressor diode in parallel and series connection PTC resettable fuse on every group of LED lamp pearl 4.
TT&C system theory diagram of the present invention as shown in Figure 2, power output end is divided into first-class power supply and the second DC power supply, the first DC power supply is connected to the stroboscopic isochronous controller, the second DC power supply is connected to the power input of LED lamp pearl by constant-current driven module, the signal output part of stroboscopic controller is connected with LED lamp pearl by constant-current driven module, and stroboscopic controller comprises power frequency square-wave signal output circuit, electric main zero cross detection circuit, microprocessor, light intensity detection circuit, temperature sensing circuit, RS485 communication interface and pwm signal light adjusting circuit; The input of square-wave signal output circuit, output connect respectively the imaging signal input port of AC power and CCTV camera, the input of electric main zero cross detection circuit, output connect respectively AC power and microprocessor, the RS485 communication interface is connected with microprocessor, the output of luminance detection circuit and temperature sensing circuit is connected respectively the input of microprocessor, and the input of luminance detection circuit and temperature sensing circuit is connected respectively photodiode and thermistor; The control output end of microprocessor connects constant-current driven module by the pwm signal light adjusting circuit.
Electric main zero cross detection circuit electric main zero cross detection circuit as shown in Figure 3 comprises resistance R 1, resistance R 2, diode D1, piezo-resistance RV1 and photoelectrical coupler U1, the port one of binding post J1 is connected with the two ends of piezo-resistance RV1 respectively with port 2, in parallel with diode D1 both positive and negative polarity after the two ends difference contact resistance R1 of piezo-resistance RV1 and resistance R 2, the both positive and negative polarity of diode D1 is connected with the input port of photoelectrical coupler U1, and the output port of photoelectrical coupler U1 is connected with the master controller input.
Power frequency square-wave signal output circuit as shown in Figure 4, power frequency square-wave signal output circuit comprises binding post J2, resistance R 4, resistance R 5, diode D2, optical coupler U2 and binding post J2, in parallel with the both positive and negative polarity of diode D2 after the port one of binding post J1 and port 2 difference contact resistance R4 and resistance R 5, the both positive and negative polarity of diode D2 is connected with the input port of photoelectrical coupler U2, and the output port of photoelectrical coupler U2 is connected with binding post J2.
The present invention's prior art that compares, by field sync signal, do not control stroboscopic synchronous, but utilize the power frequency square wave as synchronous and the synchronous common reference source of stroboscopic of exposing, under this method of synchronization, realize wireless connections between external equipment and this energy-saving LED light compensating lamp.
Simultaneously, this power frequency square-wave signal output circuit provides a kind of method of synchronization for the equipment with the outer triggering signal input, power frequency square-wave signal output circuit is that electric main is through R4 and R5 current limliting, and the power frequency square wave produced after the isolation of optical coupler U2 photoelectricity, supply with the equipment that other need power frequency synchronizing signal, as the imaging input triggering signal of CCTV camera.
As shown in Figure 5, the input of controlled constant-current driven chip U2 pin EN is from the pwm signal output of frequent flashing control for the circuit of LED lamp constant-current driven module, and when EN is high level, the OUT pin of U2 is output as low, and LED lamp pearl string is lit, and its driving current value is determined by R9.The EN of U2 is connected to reference to ground by R8, automatically shuts down output while guaranteeing without pwm signal.TVSn1 is the TVS transient voltage suppressor diode that is connected in parallel on one group of LED, can realize the LED overvoltage protection.PTCn1 is that the PTC resettable fuse that is connected on one group of LED carries out current-limiting protection, prevents that the LED lamp from powering on breakdown.The present invention comprises the above-mentioned constant-current driven module of many groups.
As shown in Figure 6, the present invention adopts thermistor R22 as temperature sensor to temperature sensing circuit, and this element is welded on the aluminium base in lamp housing front glass cover.Precision resistance R21 and temperature sensor R22 and composition bleeder circuit, its voltage is wired to the master controller of lamp housing back by resistance R 20.Master controller, through the AD conversion, detects the lamp housing current temperature value.Main control unit, according to the difference of surveyed lamp body temperature, adopts the method for preheating to realize the low temperature power-on protection and fall lower powered mode realizing high temperature protection.
As shown in Figure 7, it is luminance sensor that the present invention adopts photodiode D5 to luminance detection circuit, and luminance sensor D5 and precision resistance R24 form bleeder circuit, and its voltage is wired to the master controller of lamp housing back by resistance R 23.Master controller, through the AD conversion, detects current brightness value.Photodiode can be prepended to lamp housing, and without as existing light compensating lamp, at the lamp body rear portion, light-sensitive element is placed in punching, the present invention simultaneously utilizes the photodiode characteristic of response fast, can distinguish sunlight and the light that self sends, realize that daybreak turns off the light, be easy to safeguard.
As shown in Figure 8, the RS485 module of stroboscopic controller is for carrying out communication with longer-distance equipment for circuit for remotely controlling of the present invention, arranges, reads the parameters such as the flash time of light fixture and brightness, and can take this mode to control energy-conservation light compensating lamp synchronization flash.
As shown in Figure 9, the control power supply of energy-saving LED light compensating lamp is the 24V-24V Switching Power Supply to the DC-DC power circuit, and the first DC power supply of the power supply that opens the light is converted into the 5V DC power supply after the conversion of DC-DC converter, filtering.
In the present invention, the electric main zero cross detection circuit is for detection of the mistake zero phase of electric main.The industrial frequency AC civil power is connected to the interrupting input pin of controller after current limliting and photoelectricity isolation, to guarantee the real-time detected.Controller detects industrial frequency AC cross zero phase after, controller is controlled PWM light adjusting circuit output pwm signal at once, realizes synchronizeing with the industrial frequency AC signal, and assurance equipment light when video recording and monitoring is the brightest, and the twice vertical synchronizing signal is glistened automatically, effectively solves the light flash problem.
The pwm signal of PWM light adjusting circuit output is that first-harmonic and modulating wave are synthetic, first-harmonic is the automatic frequency multiplication of the stroboscopic signal of high definition camera output, after frequency multiplication frequency range between 60-100Hz, be the electric main frequency 1-2 doubly, make light fixture flash of light and CCTV camera imaging Complete Synchronization, guarantee that monitoring or video recording reach optimum efficiency.Modulating wave is the high-frequency signal that duty ratio is 0-255, different parameters can be set as required, control the brightness of LED lamp stroboscopic, the LED electricity-saving lamp single flash operation time of the present invention is between the 2-4 millisecond, when this energy-saving LED light compensating lamp is usingd the alternating current of 50HZ during as the flash synchronization reference source, flashing rate after frequency multiplication is 100HZ, and its energy consumption is normal bright light 1/5 to 2/5; When this product is usingd the alternating current of 60HZ during as the flash synchronization reference source, flashing rate after frequency multiplication is 120HZ, its energy consumption is normal bright light 6/25 to 12/25, effectively solves the existing problem that LED light compensating lamp power consumption is large, caloric value is high, light decay is serious, the life-span is short.
In addition to the implementation, the present invention can also have other execution modes, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection range of requirement of the present invention.
Claims (8)
1. an energy-saving LED light compensating lamp, the LED lamp and the control device that comprise lamp housing and be arranged on described lamp housing inside, described LED lamp is connected by wire with described control device, it is characterized in that: described control device comprises master controller, the electric main zero cross detection circuit be connected with described master controller, power frequency square-wave signal output circuit and PWM light adjusting circuit;
Described electric main zero cross detection circuit is connected respectively binding post J1 with described power frequency square-wave signal output circuit;
Described electric main zero cross detection circuit comprises resistance R 1, resistance R 2, diode D1, piezo-resistance RV1 and photoelectrical coupler U1, the port one of described binding post J1 is connected with the two ends of piezo-resistance RV1 respectively with port 2, in parallel with diode D1 both positive and negative polarity after the two ends difference contact resistance R1 of described piezo-resistance RV1 and resistance R 2, the both positive and negative polarity of described diode D1 is connected with the input port of photoelectrical coupler U1, and the output port of described photoelectrical coupler U1 is connected with described master controller input;
Described power frequency square-wave signal output circuit comprises binding post J2, resistance R 4, resistance R 5, diode D2, optical coupler U2 and binding post J2, in parallel with the both positive and negative polarity of diode D2 after the port one of described binding post J1 and port 2 difference contact resistance R4 and resistance R 5, the both positive and negative polarity of described diode D2 is connected with the input port of photoelectrical coupler U2, and the output port of described photoelectrical coupler U2 is connected with described binding post J2.
2. a kind of energy-saving LED light compensating lamp according to claim 1, it is characterized in that: also comprise the temperature sensing circuit be connected with described master controller, described temperature sensing circuit is welded on described aluminium base, and be prepended in described lamp housing cloche, described temperature sensor is thermistor, described temperature sensing circuit comprises resistance R 20, precision resistance R21 and thermistor R22, described precision resistance R21 and thermistor R22 form bleeder circuit, and described bleeder circuit is connected with the described master controller of described lamp housing back after connecting described resistance R 20.
3. a kind of energy-saving LED light compensating lamp according to claim 1, it is characterized in that: also comprise the luminance detection circuit be connected with described master controller, described luminance detection circuit is welded on described aluminium base, and be prepended in described lamp housing cloche, described luminance sensor is photodiode, described luminance detection circuit comprises luminance sensor D5, precision resistance R24 and resistance R 23, described luminance sensor D5 and described precision resistance R24 form bleeder circuit, and described bleeder circuit is connected with the described master controller of described lamp housing back after connecting described resistance R 23.
4. a kind of energy-saving LED light compensating lamp according to claim 1 is characterized in that: also comprise constant-current drive circuit, described constant-current drive circuit is connected with described master controller by described PWM light adjusting circuit.
5. a kind of energy-saving LED light compensating lamp according to claim 1 is characterized in that: described pwm signal is that first-harmonic and modulating wave are synthetic, and doubly, described modulating wave is the high-frequency signal that duty ratio is 0-255 to the 1-2 that the frequency of described first-harmonic is the electric main frequency.
6. according to the described a kind of energy-saving LED light compensating lamp of claims 1, it is characterized in that: the equal TVS transient voltage suppressor diode in parallel of described high-powered LED lamp and series connection PTC resettable fuse.
7. a kind of energy-saving LED light compensating lamp according to claim 1, is characterized in that: also comprise the RS485 communication interface be connected with described master controller.
8. according to the described a kind of energy-saving LED light compensating lamp of claims 1, it is characterized in that: described control device power supply is the 24V-24V Switching Power Supply, and the first DC power supply of the power supply that opens the light is converted into the 5V DC power supply after the conversion of DC-DC converter, filtering.
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| CN2013103856315A CN103442488A (en) | 2013-08-29 | 2013-08-29 | Energy saving LED fill light |
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| CN2013103856315A CN103442488A (en) | 2013-08-29 | 2013-08-29 | Energy saving LED fill light |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109983844A (en) * | 2016-08-19 | 2019-07-05 | 路晟（上海）科技有限公司 | System and method for controlling electric appliance |
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Application publication date: 20131211 |