CN101776252A - Built-in wide-angle LED light-compensating lamp - Google Patents
Built-in wide-angle LED light-compensating lamp Download PDFInfo
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- CN101776252A CN101776252A CN200910216707A CN200910216707A CN101776252A CN 101776252 A CN101776252 A CN 101776252A CN 200910216707 A CN200910216707 A CN 200910216707A CN 200910216707 A CN200910216707 A CN 200910216707A CN 101776252 A CN101776252 A CN 101776252A
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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 provides a built-in wide-angle LED light-compensating lamp which relates to the technical field of license plate recognition in an intelligent traffic system. The built-in wide-angle LED light-compensating lamp comprises a digital camera, LED lamp plates, an LED frequency-doubling drive plate and a 12V 5A switching power supply, wherein the LED frequency-doubling drive plate comprises a singlechip, an ambient light intensity photosensitive circuit and an input/output circuit; the singlechip is connected with the ambient light intensity photosensitive circuit through an AND gate and connected with a trigger controller through the AND gate to control an LED to trigger a flashing function; and the reflecting plates of the LED lamp plates are split type angle-adjustable double lamp plates made of a single LED lamp plate, and the illumination angle of the two lamp plates are respectively 7 minus or plus 1 degrees in the horizontal direction and about 3 degrees in the vertical direction. A jumping wire is arranged on the drive plate thereof, a camera exposure signal and the photosensitive circuit simultaneously perform actions when the jumping wire is connected, and only the camera exposure signal performs the action when the jumping wire is disconnected. The invention can achieve wide-angle balanced light compensation, can be automatically synchronous with an acquisition frequency or double the frequency, and satisfies the requirement for realizing balanced license plate light compensation of dual lanes.
Description
Technical field
The present invention relates to license plate recognition technology field in the intelligent transportation system, especially a kind of auxiliary light filling equipment for the identification exploitation of car plate system is a kind of built-in wide-angle LED light-compensating lamp.
Background technology
In recent years, along with the fast development of LED technology, the LED lamp is in energy-conservation, safety, long-life and to be easy to the advantage of aspects such as controlling more outstanding, and the light filling lamp that is made of the LED fluorescent tube has obtained more applications in intelligent transportation system.Built-in LED light filling lamp is the light filling equipment more widely of using in the intelligent transportation system always.Existing in the market built-in LED light filling lamp for remote as the car plate from about 17 meters in video camera, just can not be taken into account exposure intensity and angle.The appearance of particularly plain as 200 everythings along with high-resolution camera and above video camera also is applied to the situation that two-way traffic is captured, and existing built-in LED light filling lamp can not satisfy this video camera carries out balanced light filling simultaneously to two-way traffic requirement.Common built-in LED light filling light irradiation width is narrower, only can realize the light filling of a lane width, and exist the central area bright excessively, the problem of fringe region illumination deficiency; And if the LED lamp that adopts the bigger fluorescent tube of angle to make is too diffusing because of light energy distribution again, cause its exposure intensity not reach requirement.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can reach the balanced light filling of wide angle, can automatically and the frequency acquisition of video camera be synchronous and the novel built-in LED light filling lamp of frequency multiplication, to overcome above-mentioned deficiency; Satisfy two-way traffic and realize the requirement of balanced car plate light filling.
The technical solution that realizes the present invention's purpose is such: a kind of built-in wide-angle LED light-compensating lamp, comprise digital camera, LED lamp plate, LED frequency multiplication drive plate, 12V 5A Switching Power Supply four parts, described LED frequency multiplication drive plate is made up of single-chip microcomputer, environmental light intensity photosensitive circuit, imput output circuit, it is characterized in that: described single-chip microcomputer is by being connected with knocker border light sensation optical circuit, by be connected control LED trigger flashing function with the triggering controller with door; The reflecting plate of described LED lamp plate is made the two lamp plates of split type angle adjustable by single LED lamp plate, the irradiating angle of two lamp plates: 7 ° ± 1 ° of level, vertical about 3 °.
Described a kind of built-in wide-angle LED light-compensating lamp is characterized in that described LED frequency multiplication drive plate is provided with wire jumper, tie jumper, and video camera exposure signal and photosensitive circuit work simultaneously, disconnect wire jumper, have only the video camera exposure signal to work.
Compared with prior art the present invention has following advantage and good effect:
1, the present invention is being on increasing LED lamp scale and keeping characteristics that the miniaturization compact installs, and the light energy equilibrium of local redundancy is transmitted in the scope of two-way traffic, is formed on the purpose of the equilibrium irradiation light filling of 7 meters of 17 meters last two-way traffics of distance.
2, automatic synchronous and frequency multiplication with the video camera frame frequency, the multiplying power of real-time change frequency multiplication makes human eye discover flicker less than lamp; Can control switching by the power of surround lighting, and the adjustable brightness of lamp, irradiating angle is adjustable, makes camera system photograph two-way traffic license plate image clearly.
3, can start heating and cooling function under cold unusually and high temperature, thereby constitute integrated apparatus with video camera, protective cover preferably, convenient installation and minimizing are connected up, and have reduced the difficulty of construction of engineering and have improved maintenanceability.
Description of drawings
Fig. 1 is that built-in LED light filling lamp of the present invention constitutes schematic diagram.
Fig. 2 is a LED frequency multiplication drive plate structural representation of the present invention.
Fig. 3 is a LED frequency multiplication drive plate circuit theory schematic diagram of the present invention.
Fig. 4 is a built-in LED light filling modulated structure front elevational schematic of the present invention.
Fig. 5 is a LED reflectoscope plate structure schematic top plan view of the present invention.
Fig. 6 is a LED reflectoscope plate structure left side view schematic diagram of the present invention.
Fig. 7 is built-in LED light filling lamp interface of the present invention, wire jumper and position potentiometer schematic diagram.
The specific embodiment
Referring to Fig. 1 a kind of built-in wide-angle LED light-compensating lamp shown in Figure 2, comprise digital camera 1, LED lamp plate 2, LED frequency multiplication drive plate 3,12V 5A Switching Power Supply 4 four parts.This four part is installed in the cabinet of protective cover 1.1 shells, constitutes described LED light filling lamp.LED lamp plate 2 is installed in the protective cover front end window glass, and video camera 1 is installed in the central authorities of protective cover, and LED frequency multiplication drive plate 3 and 12V 5A Switching Power Supply 4 are installed in the video camera both sides.
Described LED frequency multiplication drive plate 3 is made up of single-chip microcomputer, environmental light intensity photosensitive circuit, imput output circuit.Described single-chip microcomputer is by being connected with knocker border light sensation optical circuit, by be connected control LED trigger flashing function with the triggering controller with door; Its effect is to receive the exposure stroboscopic signal that video camera is sent by the RS485 interface, and this signal carries out process of frequency multiplication by single-chip microcomputer to this signal by the rear socket pin13-A and the pin14-B output of digital camera 1; Handling frame per second was 8～15 frame per second/seconds, integral multiple output trigger impulse with 8～15 frames, simultaneously also synchronous with the stroboscopic signal, this signal triggering and 2 work of driving LED lamp plate, have 8～15Hz synchronizing band glitch of very big stimulation to be converted into to human eye human eye is stimulated less 50～60Hz synchronizing band glitch with 8～15 frame synchronizing signals of former video camera output are formed, the frequency multiplication multiple is set to human eye perceives is not glimmered; When video camera 1 frame per second during less than 8 frames/second, single-chip microcomputer is not made process of frequency multiplication, and as synchronous trigger impulse, this moment, LED lamp and video camera 1 frame synchronizing signal were glimmered synchronously.Simultaneous camera exposure signal or environmental light intensity photosensitive circuit be as switch device, and when no exposure signal or the perception of environmental light intensity photosensitive circuit during daytime, the LED lamp is closed.
By Fig. 3, Fig. 4, Fig. 5, Fig. 6 as can be known, the reflecting plate 2.1 of described LED lamp plate 2 is made the two lamp plates of split type angle adjustable by single LED lamp plate, the suitable angle of horizontal and vertical tilt on the irradiating angle of two lamp plates, the irradiating angle of two lamp plates: 7 ° ± 1 ° of level, vertical about 3 °.Such design is extremely important, can utilize single built-in LED light filling lamp in redundancy that local irradiation had, the light energy equilibrium of local redundancy is transmitted in the scope of two-way traffic, reached in the characteristics that do not increase LED lamp scale and keep the miniaturization compact to install, be formed on the purpose of the equilibrium irradiation light filling of 7 meters of 17 meters last two-way traffics of distance.
Shown in Figure 7, described LED frequency multiplication drive plate 3 is provided with wire jumper, tie jumper, and video camera exposure signal and photosensitive circuit work simultaneously, disconnect wire jumper, have only the video camera exposure signal to work.The regulating impulse potentiometer can change the width of pulse, and its pulse width range is 0.7ms～4ms, regulates the electric current potentiometer and can change the brightness of LED lamp.Described 12V 5A Switching Power Supply 4 provides working power for drive plate 3 and LED lamp plate 2.During the power supply operate as normal, power supply indicator (green light) is bright.Utilize the photodiode socket in the photosensitive circuit, when (daytime/night), photodiode inserts socket in the testing environment light intensity; When not inserting photodiode, flash of light will not controlled by environmental light intensity.Photodiode is installed on the LED lamp plate 2.During daytime, (VD3) is bright for the photosensitive tube indicator lamp.Trigger impulse input interface (A GND B): receive from the digital camera stroboscopic lamp+, the synchronous triggering signal of the RS422 of stroboscopic lamp-output.Triggering signal is arranged when (8～15 frame/seconds of frame per second), as the pulse stroboscopic, input signal indicator lamp (VD2) flicker, (the LED lamp plate does not glimmer the output signal indicator lamp for VD6, VD7) Chang Liang.Triggering signal (frequency＜8 frame/seconds), as pulse-triggered, output signal indicator lamp (VD6, VD7) flicker, the flicker of LED lamp plate.Control panel output triggering signal (LOAD 12V) triggers the LED lamp plate.Working properly, when signal output is arranged, output indicator (VD6, VD7) Chang Liang.The present invention is applicable to that public security bayonet socket, electronic police, bayonet socket velocity-measuring system, parking lot, charge station etc. have in the system of car plate recognition function.
The technical indicator of described built-in wide-angle LED lamp:
1, aim at high-definition digital video camera light filling, the light filling effect is reflection.
2, according to synchronous stroboscopic after the video camera output frame rate frequency multiplication, save power consumption and life-saving, mean power＜20W, moment peak power＜60W.
3, rated voltage 12V, constant current drives, average life span＞400000 hour.
4, opening and closing by photosensitive tube control lamp.
5, appearance and size (length and width height): lamp plate: 147*101*23, drive plate: 72*110*7
Claims (2)
1. built-in wide-angle LED light-compensating lamp, comprise digital camera (1), LED lamp plate (2), LED frequency multiplication drive plate (3), 12V 5A Switching Power Supply 4 four parts, described LED frequency multiplication drive plate (3) is made up of single-chip microcomputer, environmental light intensity photosensitive circuit, imput output circuit, it is characterized in that: described single-chip microcomputer is by being connected with knocker border light sensation optical circuit, by be connected control LED trigger flashing function with the triggering controller with door; The reflecting plate (2.1) of described LED lamp plate (2) is made the two lamp plates of split type angle adjustable by single LED lamp plate, the irradiating angle of two lamp plates: 7 ° ± 1 ° of level, vertical about 3 °.
2. a kind of built-in wide-angle LED light-compensating lamp according to claim 1, it is characterized in that: described LED frequency multiplication drive plate (3) is provided with wire jumper, tie jumper, and video camera exposure signal and photosensitive circuit work simultaneously, disconnect wire jumper, have only the video camera exposure signal to work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102167075A CN101776252B (en) | 2009-12-11 | 2009-12-11 | Built-in wide-angle LED light-compensating lamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102167075A CN101776252B (en) | 2009-12-11 | 2009-12-11 | Built-in wide-angle LED light-compensating lamp |
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| Publication Number | Publication Date |
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| CN101776252A true CN101776252A (en) | 2010-07-14 |
| CN101776252B CN101776252B (en) | 2011-06-29 |
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| CN2009102167075A Active CN101776252B (en) | 2009-12-11 | 2009-12-11 | Built-in wide-angle LED light-compensating lamp |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917808A (en) * | 2010-08-12 | 2010-12-15 | 深圳市中盟科技股份有限公司 | Stroboscopic traffic fill light and control method thereof |
| CN111352390A (en) * | 2020-03-03 | 2020-06-30 | 马鞍山职业技术学院 | Visual intelligent robot control system based on real-time analysis |
| 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 |
-
2009
- 2009-12-11 CN CN2009102167075A patent/CN101776252B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917808A (en) * | 2010-08-12 | 2010-12-15 | 深圳市中盟科技股份有限公司 | Stroboscopic traffic fill light and control method thereof |
| CN111352390A (en) * | 2020-03-03 | 2020-06-30 | 马鞍山职业技术学院 | Visual intelligent robot control system based on real-time analysis |
| 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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| Publication number | Publication date |
|---|---|
| CN101776252B (en) | 2011-06-29 |
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