CN103442486A - A bright LED strobe light - Google Patents
A bright LED strobe light Download PDFInfo
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Abstract
本发明涉及一种高亮LED频闪灯，属于光源控制技术领域。包括频闪/爆闪同步检测电路，电路中接线端子J2的端口分别与瞬态电压抑制二极管TVS1正极和负极连接；瞬态电压抑制二极管TVS1的正极与二极管D2串联后与三极管Q1的发射极连接，同时，瞬态电压抑制二极管TVS1的正极与电阻R8串联后与三极管Q3的基极连接；三极管Q1的基极与电阻串联后与三极管Q2的基极连接，其集电极与三极管Q3的集电极同时与光电耦合器U2的输入端口连接，光电耦合器U2的输出端口与主控制器的输入端口连接；三极管Q2的集电极与三极管Q3的基极连接，其发射极与三极管Q3的发射极连接同时接地。本发明使用频闪控制电路对LED灯进行频闪和爆闪控制，提高了光源的利用率和抓拍照片的质量。
The invention relates to a high-brightness LED strobe lamp, which belongs to the technical field of light source control. It includes a stroboscopic/strobe synchronous detection circuit. The ports of terminal J2 in the circuit are respectively connected to the anode and cathode of the transient voltage suppression diode TVS1; the anode of the transient voltage suppression diode TVS1 is connected in series with the diode D2 and then connected to the emitter of the transistor Q1 At the same time, the anode of the transient voltage suppression diode TVS1 is connected in series with the base of the transistor Q3 after being connected in series with the resistor R8; the base of the transistor Q1 is connected in series with the base of the transistor Q2 after being connected in series with the resistor, and its collector is connected with the collector of the transistor Q3 At the same time, it is connected to the input port of the photocoupler U2, and the output port of the photocoupler U2 is connected to the input port of the main controller; the collector of the triode Q2 is connected to the base of the triode Q3, and its emitter is connected to the emitter of the triode Q3. ground at the same time. The invention uses a strobe control circuit to control the strobe and flash of the LED lamp, thereby improving the utilization rate of the light source and the quality of snapped photos.
Description
Technical field
The invention belongs to the light source control technical field, relate to a kind of LED lamp, relate in particular to highlighted LED stroboscopic lamp a kind of and that the peripheral hardware sync rates is effective.
Background technology
Under the low-light (level) environment, video camera photo-sensitive cell synchronization 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.Secondary light source can be divided into three kinds of normal bright light fillings, stroboscopic light filling, quick-fried sudden strain of a muscle light filling.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.The road monitoring light filling equipment that existing intelligent transportation field is used is mainly used normal bright light filling and two kinds of modes of quick-fried sudden strain of a muscle light filling, but, the brightness of normal bright light filling mode is low, light filling weak effect and power consumption are large, caloric value is high, easily cause the LED light decay serious, the life-span reduces greatly, can not reach the instructions for use of road monitoring; Quick-fried sudden strain of a muscle light filling be video camera need grabgraf as the time light filling, as lightning, glimmer, produce light pollution comparatively serious.And two kinds of light filling modes are all comparatively single, can't realize continuous light filling and highlighted candid photograph flash of light simultaneously, can't meet the requirement that the road light filling of capturing continuously violating the regulations required and captured the picture that quality requirement is higher.
The another kind of light filling mode that intelligent transportation field is used is stroboscopic light filling, there is brightness regulation convenient, the advantage that light pollution is few, apply more and more extensive, but because 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, need to solve the problem that stroboscopic light filling exposes and synchronizes with video camera while therefore, adopting stroboscopic light filling.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the shortcoming of prior art, provide that a kind of brightness is high, anti-jamming effectiveness good, the light source utilance high and with peripheral hardware, synchronize compatibility strong highlighted LED stroboscopic lamp.
In order to solve above technical problem, the present invention relates to a kind of highlighted LED stroboscopic 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, the stroboscopic that control device comprises master controller, be connected with master controller/quick-fried sudden strain of a muscle sync detection circuit and PWM light adjusting circuit.
Stroboscopic/quick-fried sudden strain of a muscle sync detection circuit comprises binding post J2, stroboscopic sync detection circuit and quick-fried sudden strain of a muscle sync detection circuit.
The stroboscopic sync detection circuit comprises transient voltage suppressor diode TVS1, diode D2, photoelectrical coupler U3, triode Q1, triode Q2, triode Q3, the port 3 of binding post J2 is connected with the stroboscopic signal of outside imaging device or candid photograph signal, and the port one of binding post J2 is connected with transient voltage suppressor diode TVS1 negative pole; The positive pole of transient voltage suppressor diode TVS1 is connected with the emitter of triode Q1 with after diode D2 series connection, and simultaneously, the positive pole of transient voltage suppressor diode TVS1 is connected with the base stage of triode Q3 with after resistance R 8 series connection.
After the base stage of triode Q1 is in series with a resistor, with the base stage of triode Q2, be connected, the collector electrode of triode Q1 is connected with the collector electrode of triode Q3,, with the input port of photoelectrical coupler U3, be connected, the output port of photoelectrical coupler U3 is connected with the input port of master controller simultaneously; The collector electrode of triode Q2 is connected with the base stage of triode Q3, while ground connection after the emitter of triode Q2 is connected with the emitter of triode Q3.
Quick-fried sudden strain of a muscle sync detection circuit comprises transient voltage suppressor diode TVS2, diode D4, photoelectrical coupler U6, triode Q4, triode Q5, triode Q6, the port 2 of binding post J2 is connected with the quick-fried glitch of outside image-taking device, and the port one of binding post J2 is connected with transient voltage suppressor diode TVS2 negative pole; The positive pole of transient voltage suppressor diode TVS2 is connected with the emitter of triode Q5 with after diode D4 series connection, and simultaneously, the positive pole of transient voltage suppressor diode TVS2 is connected with the base stage of triode Q4 with after resistance R 22 series connection.
After the base stage of triode Q5 is in series with a resistor, with the base stage of triode Q6, be connected, the collector electrode of triode Q4 is connected with the collector electrode of triode Q4,, with the input port of photoelectrical coupler U6, be connected, the output port of photoelectrical coupler U6 is connected with the input port of master controller simultaneously; The collector electrode of triode Q6 is connected with the base stage of triode Q4, while ground connection after the emitter of triode Q4 is connected with the emitter of triode Q6.
The technical scheme that the present invention further limits is: also comprise the electric main zero cross detection circuit be connected with master controller, the electric main zero cross detection circuit comprises binding post J1, diode D1, piezo-resistance RV1 and photoelectrical coupler U1, the receiving port of binding post J1 is connected with the alternating current zero passage synchronous signal output end mouth of external equipment, the port one of binding post J1 is connected with the two ends of piezo-resistance RV1 respectively with port 2, in parallel with the both positive and negative polarity of diode D1 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, the output port of photoelectrical coupler U1 is connected with the master controller input pin.
Further, also comprise the RS485 communication interface be connected with master controller.
Further, 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 14, precision resistance R15 and thermistor R16, and precision resistance R15 and thermistor R16 form bleeder circuit, after bleeder circuit contact resistance R14, 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 is prepended in the lamp housing cloche.Luminance sensor is photodiode, and luminance detection circuit comprises luminance sensor D3, resistance R 17 and precision resistance R18, and luminance sensor D3 and precision resistance R18 form bleeder circuit, after bleeder circuit contact resistance R17, 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, pwm signal is that first-harmonic and modulating wave are synthetic, first-harmonic is the automatic frequency multiplication of the stroboscopic signal of electric main frequency or high-definition camera output, after frequency multiplication, frequency range is between 60-100Hz, eliminate human eye perceives light flash phenomenon and guarantee stroboscopic and CCTV camera imaging Complete Synchronization, reach best light filling effect, described modulating wave is the high-frequency signal that duty ratio is 0-255, for controlling the brightness of single stroboscopic.
Further, the equal TVS transient voltage suppressor diode in parallel of high-powered LED lamp and series connection PTC resettable fuse.
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 present invention uses orderly high-powered LED lamp is carried out to stroboscopic the controlling with flash of light of frequent flashing control circuit, is carrying out high intense flash candid photograph in light filling continuously, has not only improved the utilance of light source but also has improved the quality of photo; 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 highlighted LED stroboscopic lamp realize wireless connections; Use stroboscopic/quick-fried sudden strain of a muscle triggering signal testing circuit to make the compatibility of the present invention and all kinds of high definition cameras on the market stronger simultaneously; The pwm signal of pwm signal light adjusting circuit transmission of the present invention is that first-harmonic and modulating wave are synthetic, human eye perceives light flash phenomenon be can eliminate after the automatic frequency multiplication of first-harmonic and stroboscopic and monitoring camera imaging Complete Synchronization guaranteed, simultaneously, modulating wave is for controlling the brightness of single stroboscopic, under quick-fried glitch triggering situation, the LED lamp generates strobe pulse signal according to default phase place and flash time length, with high-high brightness, is glistened, the brightest while guaranteeing to capture.The present invention has also fundamentally solved the problems 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 observing and controlling theory structure block diagram of the present invention.
Fig. 3 is the zero cross detection circuit of electric main of the present invention.
Fig. 4 is stroboscopic of the present invention/quick-fried sudden strain of a muscle circuits for triggering.
Fig. 5 is the circuit of constant-current driven module of the present invention.
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
The present invention relates to a kind of highlighted LED stroboscopic lamp, 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 stroboscopic 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.
This energy-saving LED light compensating lamp adopts photodiode as brightness detecting element of the present invention, photodiode can be prepended to lamp housing, 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.
System theory of constitution block 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, stroboscopic controller comprises stroboscopic/quick-fried sudden strain of a muscle triggering signal testing circuit, the 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 stroboscopic/quick-fried sudden strain of a muscle sync detection circuit, output connect respectively synchronous signal input end and the microprocessor of peripheral hardware, 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.
The pwm signal of pwm signal light adjusting circuit transmission is that first-harmonic and modulating wave are synthetic, first-harmonic is the automatic frequency multiplication of the stroboscopic signal of electric main frequency or the output of high definition camera, after frequency multiplication, frequency range is between 60-100Hz, can eliminate human eye perceives light flash phenomenon and guarantee stroboscopic and CCTV camera imaging Complete Synchronization, reach best light filling effect, described modulating wave is the high-frequency signal that duty ratio is 0-255, for controlling the brightness of single stroboscopic, this highlighted LED stroboscopic lamp can arrange different parameters as required, control the brightness of LED lamp stroboscopic, simultaneously under quick-fried glitch triggering situation, the LED lamp generates strobe pulse signal according to default phase place and flash time length, with high-high brightness, glistened, the brightest while guaranteeing to capture.
Electric main zero cross detection circuit electric main zero cross detection circuit as shown in Figure 3 comprises the electric main zero cross detection circuit be connected with master controller, the electric main zero cross detection circuit comprises binding post J1, diode D1, piezo-resistance RV1 and photoelectrical coupler U1, the port of binding post J1 is connected with the alternating current zero passage synchronous signal output end mouth of external equipment, the port one of binding post J1 is connected with the two ends of piezo-resistance RV1 respectively with port 2, in parallel with the both positive and negative polarity of diode D1 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, the output port of photoelectrical coupler U1 is connected with the master controller input pin.
Stroboscopic/quick-fried sudden strain of a muscle triggering signal testing circuit as shown in Figure 4, LED lamp and control device that stroboscopic/quick-fried sudden strain of a muscle sync detection circuit comprises lamp housing and is arranged on lamp housing inside, the LED lamp is connected by wire with control device, the stroboscopic that control device comprises master controller, be connected with master controller/quick-fried sudden strain of a muscle sync detection circuit and PWM light adjusting circuit.
Stroboscopic/quick-fried sudden strain of a muscle sync detection circuit comprises binding post J2, stroboscopic sync detection circuit and quick-fried sudden strain of a muscle sync detection circuit.
The stroboscopic sync detection circuit comprises transient voltage suppressor diode TVS1, diode D2, photoelectrical coupler U3, triode Q1, triode Q2, triode Q3, the port 3 of binding post J2 is connected with the stroboscopic signal of outside imaging device or candid photograph signal, and the port one of binding post J2 is connected with transient voltage suppressor diode TVS1 negative pole; The positive pole of transient voltage suppressor diode TVS1 is connected with the emitter of triode Q1 with after diode D2 series connection, and simultaneously, the positive pole of transient voltage suppressor diode TVS1 is connected with the base stage of triode Q3 with after resistance R 8 series connection.
After the base stage of triode Q1 is in series with a resistor, with the base stage of triode Q2, be connected, the collector electrode of triode Q1 is connected with the collector electrode of triode Q3,, with the input port of photoelectrical coupler U3, be connected, the output port of photoelectrical coupler U3 is connected with the input port of master controller simultaneously; The collector electrode of triode Q2 is connected with the base stage of triode Q3, while ground connection after the emitter of triode Q2 is connected with the emitter of triode Q3.
Quick-fried sudden strain of a muscle sync detection circuit comprises transient voltage suppressor diode TVS2, diode D4, photoelectrical coupler U6, triode Q4, triode Q5, triode Q6, the port 2 of binding post J2 is connected with the quick-fried glitch of outside image-taking device, and the port one of binding post J2 is connected with transient voltage suppressor diode TVS2 negative pole; The positive pole of transient voltage suppressor diode TVS2 is connected with the emitter of triode Q5 with after diode D4 series connection, and simultaneously, the positive pole of transient voltage suppressor diode TVS2 is connected with the base stage of triode Q4 with after resistance R 22 series connection.
After the base stage of triode Q5 is in series with a resistor, with the base stage of triode Q6, be connected, the collector electrode of triode Q4 is connected with the collector electrode of triode Q4,, with the input port of photoelectrical coupler U6, be connected, the output port of photoelectrical coupler U6 is connected with the input port of master controller simultaneously; The collector electrode of triode Q6 is connected with the base stage of triode Q4, while ground connection after the emitter of triode Q4 is connected with the emitter of triode Q6.
In the stroboscopic circuit, when the port 3 of binding post J2 is high level, the base stage of triode Q3 is high level, collector electrode due to triode Q3 is connected with optical coupler U2 simultaneously, in optical coupler U2, VCC is high level, therefore the current collection of triode Q3 high level very, at this moment the emitter saturation conduction of triode, high level on triode Q1 collector electrode is higher than level on emitter simultaneously, triode Q1 cut-off, at this moment the input that is transferred to optical coupler U2 is low level, and controller receives low level signal.
When the port 3 of binding post J2 is low level, the base stage of triode Q3 is low level, triode Q3 cut-off, the emission of triode Q1 is very low, base stage and collector electrode are high level, triode Q1 saturation conduction, the input that at this moment is transferred to optical coupler U2 is low level, controller receives low level signal.
This stroboscopic/quick-fried sudden strain of a muscle controller can detect the quick-fried glitch of a road stroboscopic signal and a road of high definition camera output simultaneously, control the brightness of LED lamp according to the difference of signal, circuit middle connecting terminal J2 is connected with the candid photograph signal with the stroboscopic of outside imaging device, can detect low and high level triggering signal, low level triggering signal, rising edge triggering signal, the trailing edge signal of external camera, there is fabulous circuit compatibility.
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 R6.The EN of U2 is connected to reference to ground by R5, 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 R16 as temperature sensor to temperature sensing circuit, and this element is welded on the aluminium base in lamp housing front glass cover.Precision resistance R15 and temperature sensor R14 and composition bleeder circuit, its voltage is wired to the master controller of lamp housing back by resistance R 14.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 D3 to luminance detection circuit, and luminance sensor D3 and precision resistance R18 form bleeder circuit, and its voltage is wired to the master controller of lamp housing back by resistance R 17.Master controller, through the AD conversion, detects current brightness value.Photodiode can be prepended to lamp housing, 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, the light that can distinguish sunlight and self send, prevent self stroboscopic or other short time light interference, 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 frequent flashing control power supply 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.
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 highlighted LED stroboscopic lamp.
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 (9)
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| CN106132020A (en) * | 2016-07-29 | 2016-11-16 | 温州立地电子有限公司 | A kind of with stroboscopic, the LED driver of constant power mode |
| CN107765194A (en) * | 2017-10-09 | 2018-03-06 | 福建成达兴智能科技股份有限公司 | A kind of flashing light tester |
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| CN113572969A (en) * | 2020-04-29 | 2021-10-29 | 浙江大华技术股份有限公司 | Stroboscopic light supplementing method, computer equipment, image acquisition device and storage medium |
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| CN104914106A (en) * | 2014-03-11 | 2015-09-16 | 由田新技股份有限公司 | Defect detection method and defect detection device |
| CN105188239A (en) * | 2015-11-06 | 2015-12-23 | 深圳市中电照明股份有限公司 | Integrated intelligent light control lamp |
| CN106132020A (en) * | 2016-07-29 | 2016-11-16 | 温州立地电子有限公司 | A kind of with stroboscopic, the LED driver of constant power mode |
| CN107765194A (en) * | 2017-10-09 | 2018-03-06 | 福建成达兴智能科技股份有限公司 | A kind of flashing light tester |
| CN107765194B (en) * | 2017-10-09 | 2023-08-18 | 福建成达兴智能科技股份有限公司 | Explosion flash lamp tester |
| CN109727460A (en) * | 2019-03-19 | 2019-05-07 | 浙江芯源交通电子有限公司 | Snapshot system based on traffic lights |
| CN113572969A (en) * | 2020-04-29 | 2021-10-29 | 浙江大华技术股份有限公司 | Stroboscopic light supplementing method, computer equipment, image acquisition device and storage medium |
| CN111508242A (en) * | 2020-04-30 | 2020-08-07 | 云南金隆伟业电子有限公司 | Synchronous control sending method and device for radio stroboscopic signal lamp |
| CN113395806B (en) * | 2021-04-27 | 2023-01-24 | 青岛威奥轨道股份有限公司 | Synchronous flashing circuit of railway tail lamp |
| CN113395806A (en) * | 2021-04-27 | 2021-09-14 | 青岛威奥轨道股份有限公司 | Synchronous flashing circuit of railway tail lamp |
| CN116296858A (en) * | 2023-05-26 | 2023-06-23 | 常州市双佳电器有限公司 | Explosion-proof detection device of LED lamp |
| CN116296858B (en) * | 2023-05-26 | 2023-08-04 | 常州市双佳电器有限公司 | Explosion-proof detection device of LED lamp |
| CN118215179A (en) * | 2024-05-17 | 2024-06-18 | 杭州方千科技有限公司 | Dual-signal light supplementing synchronous circuit and electronic equipment thereof |
| CN118215179B (en) * | 2024-05-17 | 2024-08-02 | 杭州方千科技有限公司 | Dual-signal light supplementing synchronous circuit and electronic equipment thereof |
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