CN111511058B - Dynamic regulation and control method of matrix type LED lamp light and matrix type LED lamp applied by dynamic regulation and control method - Google Patents

Dynamic regulation and control method of matrix type LED lamp light and matrix type LED lamp applied by dynamic regulation and control method Download PDF

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CN111511058B
CN111511058B CN202010187056.8A CN202010187056A CN111511058B CN 111511058 B CN111511058 B CN 111511058B CN 202010187056 A CN202010187056 A CN 202010187056A CN 111511058 B CN111511058 B CN 111511058B
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CN111511058A (en
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唐岳安
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Shanghai Runting Electronic Technology Co ltd
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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
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10—Controlling the intensity of the light
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles
    • G08G1/0175—Detecting movement of traffic to be counted or controlled identifying vehicles by photographing vehicles, e.g. when violating traffic rules
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70—Circuitry for compensating brightness variation in the scene
    • H04N23/74—Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means
    • 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
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/40—Details of LED load circuits
    • H05B45/44—Details of LED load circuits with an active control inside an LED matrix
    • H05B45/46—Details of LED load circuits with an active control inside an LED matrix having LEDs disposed in parallel lines
    • 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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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

The invention provides a dynamic regulation and control method of matrix type LED light and a matrix type LED light applied by the same, wherein the method comprises the following steps: the matrix type LED lamps including matrix type multi-row LED lamps P1, P2 and P3 … Pn form multi-row uniform rectangular light spots after projection, and a vehicle enters a speed measuring sub area A at a speed v which is not beyond a standardn‑1And road sub-area S1，S2，S3…SnCorresponding matrix type multi-row LED lamp P1，P2，P3…PnStarting a series single-row single-control mode, and respectively and sequentially corresponding to the sub-areas of the road for light supplement; when the vehicle is overspeed, the matrix multi-row LED lamps P1，P2，P3…PnStarting parallel and time-delay control mode to light up simultaneously to irradiate all sub-regions S1，S2，S3…SnSo as to supplement light to the whole road area. The matrix type LED lamp light rays cannot enter the eyes of a driver, so that direct glare caused by the brightness of the lamp light is avoided, and the driving safety is ensured.

Description

Dynamic regulation and control method of matrix type LED lamp light and matrix type LED lamp applied by dynamic regulation and control method
Technical Field
The invention relates to the technical field of illumination, in particular to the technical field of light control, and specifically relates to a dynamic regulation and control method of matrix type LED light and a matrix type LED light applied by the same.
Background
The road monitoring equipment is used for clearly shooting a person image or a license plate number and providing enough evidence for subsequent law enforcement. To achieve clear shooting effect, the camera itself is required to have better strong light inhibition capability, that is, effective inhibition measures can be taken for the oncoming strong light, so that the feature of the shot license plate or the portrait is clear and recognizable, and if necessary, proper backlight compensation needs to be carried out on the object to be shot. The requirements of traffic polices on clear picture identification of monitored objects are higher and higher, and LED road video monitoring LED lamps are visible everywhere at urban intersections. However, the LED lamp is controversial, and mainly reflects that glare pollution is easily generated due to too large and dazzling brightness, so that eyes of drivers and pedestrians are uncomfortable, and traffic accidents are easily caused.
The GA/T1202-.
The existing LED lamp mostly uses a circular light spot, and the oblique projection of the circular light spot on the road surface is an elliptical light spot, as shown in figure 1. The elliptical light spots are not uniformly distributed, the center is bright and the periphery is dark, namely for a camera, the light rays with bright center are saturated and the exposure is possibly overexposed. And the signal is weak in the place with weak light, and the noise is large, so that the image is not clear. The elliptical spot does not match the rectangular field of view of the surveillance camera. The following two cases are possible: 1) if the light is smaller than the field of view of the camera, the periphery of the camera without light cannot be imaged; 2) and the light energy is lost and wasted when the angle of the light is larger than the visual field of the camera, and the light is incident into the eyes of a driver or a driver to form strong glare so as to cause strong harm to driving.
Therefore, the conventional LED lamp lacks professional optical design, the monitoring lamp is mostly a single LED and a condensing lens, most of the monitoring lamp is circular or elliptical, the monitoring lamp cannot be matched with the road condition, the monitoring quality is affected, and meanwhile a large amount of light is emitted out of the road surface to form energy waste. The surface brightness of the monitoring lamp is high, direct glare is serious, few intelligent control systems exist, most of the intelligent control systems are in a normally-on mode, and a large amount of energy waste is caused.
Disclosure of Invention
In view of the above disadvantages of the prior art, an object of the present invention is to provide a dynamic regulation method for a matrix LED lamp and a matrix LED lamp using the same, which are used to solve the problems of glare and energy waste of the LED lamp in the prior art.
In order to achieve the above and other related objects, an embodiment of the present invention provides a method for dynamically adjusting and controlling a matrix LED light, including: composed of matrix multi-row LED lamps P1，P2，P3…PnThe matrix type LED lamp forms multiple rows of uniform rectangular light spots after projection, and a road area needing light supplement and illumination is divided into a plurality of matrix type LED lamp light spotsRoad subarea S corresponding to the LED lamps1，S2，S3…SnIn a sub-area S of the roadnAnd corresponds to the road sub-area SnForward translation S1Is taken as a velocity measurement sub-region An-1Wherein n is a positive even number; when the vehicle enters the speed measuring sub-area A at the speed v which does not exceed the intersection rulen-1And road sub-area S1，S2，S3…SnCorresponding matrix type multi-row LED lamp P1，P2，P3…PnStarting a series single-row single-control mode, and respectively and sequentially corresponding to the road sub-areas for light supplement; in velocity measurement sub-region An-1After the vehicle speed v is measured, the passing S is calculated in advancenSupplementing time of a sub-area of a road to determine that a vehicle enters SnP-th corresponding to sub-area of roadnLight supplement time t of train lampn(ii) a The vehicle passes through the road sub-area S at the speed v1，S2，S3…SnRespectively at times t1、t2、t3…tnAnd matrix multi-row LED lamp P1，P2，P3…PnThe serial connection starting sequence and the time length of the light supplementing sub-area correspond to each other; when the license plate is positioned at SnSub-region and corresponds to PnWhen the train lights are used for supplementing light and taking pictures, the driver is in the S state that the distance a between the driver and the license plate is different and the LED lamp is not onn-1A sub-area, thus not illuminated by glare, a being the average horizontal distance of the driver's eyes from the vehicle head; when the vehicle is overspeed, the matrix multi-row LED lamps P1，P2，P3…PnStarting parallel and time-delay control mode to light up simultaneously to irradiate all sub-regions S1，S2，S3…SnSupplementing light to the whole road area; the lighting control time of the LED lamp is t1+t2+t3…+tn。
In an embodiment of the present invention, the road sub-area S1，S2，S3…SnThe length calculation of (2) adopts a dichotomy, namely, the road area is supplemented with a light areaA left segment region S with the central point as the center and the vehicle running direction as the coordinate axis1、S2…S(n/2)And a right segment region S(n/2+1)、S(n/2+2)…Sn(ii) a One way to calculate the length of the sub-area of the road in the left section area is: (H-d)/S ═ H/(L + S + a), and as S(n/2)…S2、S1Sequentially calculating the length of each road subregion; one way to calculate the length of the sub-area of the road in the right section area is: (H-d)/S ═ H-H + d)/(L-S) and as S(n/2+1)、S(n/2+2)…SnSequentially calculating the length of each road subregion; wherein: n is the number of road subregions; h is the height between the eyes of a vehicle driver and the ground; a is the average horizontal distance between the eyes of the driver and the locomotive; d is the height of the license plate from the ground; h is the height of the LED lamp, and L is the horizontal distance between the LED lamp and the central point of the light supplementing area.
In an embodiment of the present invention, the calculation formula according to the length of the sub-area of the road in the left section area is modified to obtain: (H-d) (L + a)/(H-H + d), calculating the length of each sub-area of the left segment of the 6 road sub-areas: namely S3＝[(h-d)(L+a)/(H-h+d)]+1.5，S2＝[(h-d)(L+S3+a)/(H-h+d)]+1.5，S1＝[(h-d)(L+S3+S2+a)/(H-h+d)]+ 1.5; according to the length of the road sub-area in the right section area, a calculation formula is deformed to obtain: and (H-d) L/H, calculating the length of each right sub-area in the 6 road sub-areas: namely S4＝[(h-d)L/H]+1.5，S5＝[(h-d)(L-S4)/H]+1.5，S6＝[(h-d)(L-S4-S5)/H]+1.5。
In an embodiment of the invention, a velocity measurement area a of the velocity measurement sensorn-1And road sub-area SnDiffering by one position and corresponding to a road sub-area SnForward translation S1Position, velocity measurement area A0、A1、A2…An-1And road sub-area S1，S2，S3…SnForming a correspondence; when the vehicle does not overspeed and drives into the road sub-area SnWhen the vehicle passes SnTime and S ofnLight supplement control time sequence tnIn correspondence with, at said tnP in matrix multi-row LED lamp in time periodnThe columns of lights are activated to light up and the remaining columns of LED lights are not lit.
In one embodiment of the present invention, the matrix-type multi-row LED lamps P are used when the vehicle is not over-speeding1，P2，P3…PnThe specific implementation mode that the series single-row single-control mode is started and the supplementary lighting of the sub-area of the road sequentially corresponds to respectively comprises the following steps: when the speed of the vehicle entering the speed measuring sub-area is less than the speed limit value, the vehicle respectively passes through the speed measuring sub-area An-1And the corresponding road sub-area SnIs formed as a base number through the road sub-areas SnTime t ofnTo determine vehicle entry SnSub-region corresponding to the P-thnAnd (5) light supplement time of the train lamps.
In an embodiment of the invention, when the vehicle does not overspeed, the vehicle passing through the road sub-area S is acquired1，S2，S3…SnTime t of1、t2、t3…tnOne specific implementation of (a) includes: when the speed of the vehicle entering the speed measuring area is less than the speed limit value, a road sub-area S is formed by dividing each preset length of the road sub-area by the speed measured by the first speed measuring sub-area or the preset speed1，S2，S3…SnAs the corresponding time sequence t of the matrix multi-row LED lamps1、t2、t3…tnSo as to control the supplementary lighting of the LED lamp.
In an embodiment of the present invention, the velocity measurement sub-region a is determined according ton-1Whether the vehicle speed violates the traffic rule or not to determine the matrix type multi-row LED lamp P1，P2，P3…PnSelect concatenation tnDynamic regulation method or (t)1+t2+t3…+tn) A parallel type integral regulation and control method; in velocity measurement sub-region A0、A1、A2…An-1If the series mode is determined, but the overspeed violates the traffic rule, the system will be driven from the overspeedBeginning at first, the matrix multi-row LED lamp adopts1+t2+t3…+tn) The parallel mode is fully on.
In an embodiment of the present invention, the road sub-area S1，S2，S3…SnThe width of (a) is the same as the lane width; road sub-area S1，S2，S3…SnThe length of the LED lamp is changed due to the change of the inclination angle and the height of the LED lamp; the projection area of each column of LED lamps is matched with the area of the road subarea of the area irradiated by the LED lamps.
In an embodiment of the invention, a collimating lens and a free-form surface lens are respectively configured in front of each row of LED lamps, so that light of each row of LED lamps directly irradiates a corresponding sub-area of a road, and a uniform rectangular light spot matched with the area of the sub-area of the road is formed at the same time.
The embodiment of the invention also provides a matrix type LED lamp, which adopts the dynamic regulation and control method of the matrix type LED lamp light.
As described above, the dynamic regulation and control method of the matrix LED lamp and the matrix LED lamp using the same of the present invention have the following beneficial effects:
the matrix type LED lamp is adopted in the LED lamp, multiple rows of uniform rectangular light spots are formed after the matrix type LED lamp is projected, each row of LEDs is responsible for lighting of one area, each row of LEDs can be controlled respectively, light cannot enter eyes of a driver, direct glare caused by strong contrast of light brightness and background brightness is avoided, and driving safety is guaranteed.
Drawings
Fig. 1 shows a schematic diagram of projected light spots of an LED lamp used on a road in the prior art.
Fig. 2 is a schematic overall flow chart of a dynamic control method for matrix LED lighting according to an embodiment of the present invention.
Fig. 3 is a schematic diagram illustrating light supplement of a dynamic control method for matrix LED lighting when the vehicle is not over speed according to an embodiment of the present invention.
Fig. 4 is a schematic diagram illustrating a method for calculating a length of a sub-area of a road according to an embodiment of the invention.
Fig. 5 is a schematic diagram illustrating a specific calculation example of the length of the sub-area of the road according to an embodiment of the present invention.
Fig. 6 is a timing chart of a matrix LED lamp according to another embodiment of the present invention.
Fig. 7 is a schematic diagram illustrating light supplement of a dynamic control method for matrix LED lights in an overspeed condition of a vehicle according to an embodiment of the present invention.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
Please refer to fig. 1 to 7. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention.
In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
The embodiment of the invention aims to provide a dynamic regulation and control method of matrix type LED light and a matrix type LED light applied by the method, which are used for solving the problems of glare and energy waste of the LED light in the prior art.
The following will explain in detail the matrix LED light dynamic control method and the principle and implementation of the matrix LED light applied thereto in this embodiment, so that those skilled in the art can understand the matrix LED light dynamic control method and the matrix LED light applied thereto without creative work.
As shown in fig. 2, the present embodiment provides a dynamic regulation method of a matrix LED light, including:
step S110, including matrix multi-row LED lamp P1，P2，P3…PnThe matrix type LED lamp forms multiple rows of uniform rectangular light spots after projection, and a road area needing light supplement illumination is divided into a plurality of road sub-areas S corresponding to the matrix type multiple rows of LED lamps1，S2，S3…SnIn a sub-area S of the roadnAnd corresponding to a sub-area of the roadSnThe distance of forward translation S1 is taken as the velocity measurement sub-area An-1Wherein n is a positive even number;
step S120, when the vehicle enters the speed measuring sub-area A at the speed v which does not exceed the intersection rulen-1And road sub-area S1，S2，S3…SnCorresponding matrix type multi-row LED lamp P1，P2，P3…PnStarting a series single-row single-control mode, and respectively and sequentially corresponding to the road sub-areas for light supplement; in velocity measurement sub-region An-1After the vehicle speed v is measured, the passing S is calculated in advancenSupplementing time of a sub-area of a road to determine that a vehicle enters SnP-th corresponding to sub-area of roadnLight supplement time t of train lampn(ii) a The vehicle passes through the road sub-area S at the speed v1，S2，S3…SnRespectively at times t1、t2、t3…tnAnd matrix multi-row LED lamp P1，P2，P3…PnThe serial connection starting sequence and the time length of the light supplementing sub-area correspond to each other; when the license plate is positioned at SnSub-region and corresponds to PnWhen the lights are used for light supplement and photographing, the driver is in a distance a difference with the license plate and remains at the positionS with unlighted LED lampn-1A sub-area, thus not illuminated by glare, a being the average horizontal distance of the driver's eyes from the vehicle head;
step S130, when the vehicle is overspeed, the matrix multi-row LED lamps P1，P2，P3…PnStarting parallel and time-delay control mode to light up simultaneously to irradiate all sub-regions S1，S2，S3…SnSupplementing light to the whole road area; the lighting control time of the LED lamp is t1+t2+t3…+tn。
The following describes the method for dynamically adjusting and controlling LED light in this embodiment in detail.
Step S110, including matrix multi-row LED lamp P1，P2，P3…PnThe matrix type LED lamp forms multiple rows of uniform rectangular light spots after projection, and a road area needing light supplement illumination is divided into a plurality of road sub-areas S corresponding to the matrix type multiple rows of LED lamps1，S2，S3…SnIn a sub-area S of the roadnAnd corresponding to a sub-area of the roadSnThe distance translated forwards by S1 is taken as a velocity measurement sub-area An-1Where n is a positive even number.
In this embodiment, as shown in fig. 3, the area to be supplemented with light is divided into a plurality of parts according to the road condition and the relevant standards: s1，S2，S3…SnThe width of each part of the area illuminated by the complementary light is the same as the width of the lane, and the length calculation requirement of each part is as follows: according to the height of the sight line of the automobile driver, the light rays can not be emitted into human eyes when the license plate of the automobile is in the illumination area.
In the present embodiment, the road sub-area S1，S2，S3…SnThe width of (a) is the same as the lane width; road sub-area S1，S2，S3…SnThe length of the road sub-area S is changed due to the change of the inclination angle and the height of the LED lamp1，S2，S3…SnIs translated forward with the driver of the vehicle to cause the LED lightThe included angle of the triangle formed by the connecting lines of the source emergent point and the eyes of the driver and the license plate is changed and becomes smaller. The projection area of each column of LED lamps is matched with the area of the road subarea of the area irradiated by the LED lamps.
In this embodiment, a collimating lens and a free-form lens are respectively disposed in front of each row of LED lamps, so that the light of each row of LED lamps directly illuminates the corresponding sub-area of the road, and a uniform rectangular light spot matched with the area of the sub-area of the road is formed. The lens in front of each matrix LED is divided into two parts, namely collimation and free-form surface lens light distribution, so that the LED light of each matrix directly irradiates the area responsible for the LED light, and rectangular light spots of functional areas are formed at the same time, so that glare can be effectively reduced, energy consumption can be reduced, and energy is saved.
In other words, in this embodiment, the basic array unit of the matrix LED lamp for forming light spots is composed of the same lamp beads and an optical lens which is collimated after fresnel and has a free-form surface microstructure with rectangular lattices; and any basic array unit forms a preset array optical structure according to topological distribution, and the light type emitted from the light-emitting surface of each optical lens is rectangular.
Specifically, the basic array unit is a k-by-k rectangular array, namely k optical lenses which comprise k lamp beads and k free-form surface microstructures, are collimated after being Fresnel-ized and comprise rectangular lattices, and the light emergent surface can be rectangular by adopting the k-by-k rectangular array, so that the size of light spots is exactly matched with the rectangular area formed by longitudinal and transverse crossing of a road, a building or a working table.
Matrix LED lamp that adopts in this embodiment can throw with the even rectangle facula of sub-regional area matching of road can, this embodiment does not do the specific structure detail of matrix LED lamp and restricts, and the kind of matrix LED lamp can be adopted according to the time demand to the skilled in the art personnel.
Specifically, in the present embodiment, as shown in fig. 4, the road sub-area S1，S2，S3…SnThe length calculation adopts a dichotomy, namely dividing the road area by taking the central point of the light supplement area as the center and the driving direction of the vehicle as the coordinate axisEqual left segment area S1、S2…S(n/2)And a right segment region S(n/2+1)、S(n/2+2)…Sn。
One way to calculate the length of the sub-area of the road in the left section area is: (H-d)/S ═ H/(L + S + a), and as S(n/2)…S2、S1Sequentially calculating the length of each road subregion; sequentially calculating the length of each road subregion; one way to calculate the length of the sub-area of the road in the right section area is: (H-d)/S ═ H + d)/(L-S) and the length of each road sub-area is calculated in order of S (n/2+1) and S (n/2+2) … Sn.
Wherein: as shown in fig. 4, n is the number of road sub-regions; h is the height between the eyes of a vehicle driver and the ground; a is the average horizontal distance between the eyes of the driver and the locomotive; d is the height of the license plate from the ground; h is the height of the LED lamp, and L is the horizontal distance between the LED lamp and the central point of the light supplementing area.
In this embodiment, n is 6; according to the length of the road sub-area in the left section area, a calculation formula is deformed to obtain: (H-d) (L + a)/(H-H + d), calculating the length of each sub-area of the left segment of the 6 road sub-areas: namely S3＝[(h-d)(L+a)/(H-h+d)]+1.5，S2＝[(h-d)(L+S3+a)/(H-h+d)]+1.5，S1＝[(h-d)(L+S3+S2+a)/(H-h+d)]+ 1.5; according to the length of the road sub-area in the right section area, a calculation formula is deformed to obtain: and (H-d) L/H, calculating the length of each right sub-area in the 6 road sub-areas: namely S4＝[(h-d)L/H]+1.5，S5＝[(h-d)(L-S4)/H]+1.5，S6＝[(h-d)(L-S4-S5)/H]+1.5。
According to the calculation formula, if the speed per hour of the vehicle is V (km/h)<Speed limit V0When H, a, d, H and L are constant values, the vehicle passing S can be obtained1、S2、S3…SnZone length S and corresponding matrix LED control timing t1、t2、t3…tn。
Step S120, when a vehicle enters a speed measuring subarea An-1 at a speed v which does not exceed a traffic rule, matrix multi-row LED lamps P1, P2 and P3 … Pn corresponding to the road subareas S1, S2 and S3 … Sn start a series single-row single-control mode, and light is supplemented to the road subareas respectively and sequentially; after the speed v is measured by the speed measuring sub-region An-1, the time of passing through the Sn light supplement road sub-region is calculated in advance to determine the light supplement time tn of the corresponding Pn-th row lamp when the vehicle enters the Sn road sub-region; the time when the vehicle passes through the road sub-areas S1, S2 and S3 … Sn at the speed v is t1, t2 and t3 … tn respectively, and the time corresponds to the serial connection opening sequence and the time length of matrix multi-row LED lamps P1, P2 and P3 … Pn for supplementing light to the road sub-areas; when the license plate is located in the Sn sub-area and the Pn row lamps are used for light supplementing and photographing, the driver is located in the Sn-1 sub-area with a distance difference between the driver and the license plate and the LED lamps are not turned on, so that the driver is not irradiated by glare, and a is the average horizontal distance between the eyes of the driver and the head of the vehicle.
The following describes the road sub-region S in this embodiment with specific entities1，S2，S3…SnIs calculated and the control sequence t1、t2、t3…tnThe method of (3).
As shown in fig. 5, for urban roads, the general driver's eyes of the private car with the largest traffic are 1.2 meters away from the ground, the average distance between the driver's position and the car head is 1.5 meters, and the distance between the license plate position and the ground is 0.4 meter.
To the left of the center point:
Figure BDA0002414558650000071
Figure BDA0002414558650000072
to the right of the center point:
Figure BDA0002414558650000073
Figure BDA0002414558650000074
for urban main roads: LED lamp height is generally required: 8 m; the distance between the light supplementing central area and the lamp is 20 meters; the road sub-area S can be calculated1，S2，S3…SnThe lengths are as follows:
Figure BDA0002414558650000075
Figure BDA0002414558650000076
Figure BDA0002414558650000077
Figure BDA0002414558650000078
Figure BDA0002414558650000079
Figure BDA0002414558650000081
according to the speed per hour: calculating at 40km/h to obtain a control time sequence t1、t2、t3…tnAs shown in table 1 and in fig. 6:
TABLE 1 control sequences for road sub-regions
4.8 m-S1 → t1＝430ms
4.4 m-S2 → t2＝395ms
S3 ═ 3.9 m → t3＝350ms
S4-3.5 m → t4＝315ms
S5 ═ 3.2 m → t5＝290ms
2.8 m-S6 → t6＝250ms
In the present embodiment, as shown in fig. 3, the LED lamp is in a matrix form, each row of LEDs is responsible for illuminating a sub-area of a road, and each row of LEDs can be controlled separately. Namely, each row of LEDs corresponding to the road sub-areas S1, S2 and S3 … Sn are respectively controlled, different light supplementing areas are respectively distributed and regulated, and the projection area of each array of LEDs is matched with the area of the road sub-areas S1, S2 and S3 … Sn to be illuminated.
Specifically, in this embodiment, the velocity measurement area a of the velocity measurement sensorn-1And road sub-area SnDiffering by one position and corresponding to a road sub-area SnForward translation S1Position, velocity measurement area A0、A1、A2…An-1And road sub-area S1，S2，S3…SnForming a correspondence; when the vehicle does not overspeed and drives into the road sub-area SnWhen the vehicle passes SnTime and S ofnLight supplement control time sequence tnIn correspondence with, at said tnP in matrix multi-row LED lamp in time periodnThe columns of lights are activated to light up and the remaining columns of LED lights are not lit.
In the whole light supplement process based on S1The area receives a first sensing signal of the vehicle, and the first sensing signal passes through S1，S2，S3…SnThe sequential bits of adjacent matrices emit light, which is equivalent to only one matrix LED emitting light. The single area is respectively distributed with light, so that the uniform illumination in the area can be ensured, and the monitoring equipment is facilitated to accurately capture the license plate information. Because only one matrix LED emits light all the time in the whole light supplementing process, compared with the conventional normally-on LED lamp, the energy consumption is greatly reduced by about one fifth of the conventional energy consumption, and the energy can be effectively saved.
In the present embodiment, when the vehicle is not over speed, the matrix-type multi-row LED lamps P1，P2，P3…PnThe specific implementation mode that the series single-row single-control mode is started and the supplementary lighting of the sub-area of the road sequentially corresponds to respectively comprises the following steps:
when the speed of the vehicle entering the speed measuring sub-area is less than the speed limit value, the vehicle respectively passes through the speed measuring sub-area An-1And the corresponding road sub-area SnIs formed as a base number through the road sub-areas SnTime t ofnTo determine vehicle entry SnSub-region corresponding to the P-thnAnd (5) light supplement time of the train lamps.
The lighting time of each matrix LED is determined by the vehicle speed Vkm/h and the road sub-area S1，S2，S3…SnThe length S of the area is determined, and the lighting time combination forms the driving time sequence t of the whole lamp1、t2、t3…tn。
In this embodiment, when the vehicle does not overspeed, the vehicle passing through the road sub-area S is acquired1，S2，S3…SnTime oft1、t2、t3…tnOne specific implementation of (a) includes: when the speed of the vehicle entering the speed measuring area is less than the speed limit value, a road sub-area S is formed by dividing each preset length of the road sub-area by the speed measured by the first speed measuring sub-area or the preset speed1，S2，S3…SnAs the corresponding time sequence t of the matrix multi-row LED lamps1、t2、t3…tnSo as to control the supplementary lighting of the LED lamp.
When the vehicle enters S1When the area is in, the speed measurement sensor measures the speed V of the vehicle and transmits the speed V back to the LED lamp to judge the whole normally-on light supplement mode or the dynamic light regulation and control mode and calculate the control time sequence t1、t2、t3…tn(ii) a When the lamp is in the dynamic light regulation mode, the sensing signal starts the matrix 1 lamp to light, and S is carried out1Number plate in region t1Time is well supplemented with light; when the vehicle is driven out S1Enter S2While the start matrix 2 lights up, while the matrix 1 lights go out, at S2Regional license plate at t2The light is supplemented continuously for time; and so on, when the vehicle enters SnWhen the license plate is in the area, the license plate is photographed in the whole light supplementing area due to continuous dynamic light supplementing, meanwhile, no direct light enters human eyes, and the direct glare is 0.
Step S130, as shown in FIG. 7, when the vehicle is over speed, the matrix multi-row LED lamps P1，P2，P3…PnStarting parallel and time-delay control mode to light up simultaneously to irradiate all sub-regions S1，S2，S3…SnSupplementing light to the whole road area; the lighting control time of the LED lamp is t1+t2+t3…+tn。
If the vehicle does not overspeed, based on S1The area receives a first sensing signal of the vehicle, a lamplight dynamic regulation mode is started and only acts on license plate supplementary lighting, and therefore the traditional integral normally-on type supplementary lighting mode is changed into a matrix type time sequence control dynamic dimming mode; if the vehicle is overspeed or has other detectable violation behaviors, returning to the overall normally-on S1，S2，S3…SnAnd the light supplement area is completely lightened.
In the embodiment, the matrix multi-row LED lamp P is determined according to whether the speed of the speed measuring sub-region An-1 violates the traffic rule1，P2，P3…PnSelect concatenation tnDynamic regulation method or (t)1+t2+t3…+tn) A parallel type integral regulation and control method; in velocity measurement sub-region A0、A1、A2…An-1If the series mode is determined firstly, but the traffic regulation is violated in the middle of the process because of overspeed, the matrix multi-row LED lamp is adopted (t)1+t2+t3…+tn) The parallel mode is fully on.
The embodiment of the invention also provides a matrix type LED lamp, which adopts the dynamic regulation and control method of the matrix type LED lamp light. The dynamic regulation and control method of the matrix LED light has been described in detail above, and is not described herein again.
Furthermore, in order to highlight the innovative part of the present invention, the technical features that are not so closely related to solve the technical problems proposed by the present invention are not introduced in the present embodiment, but this does not indicate that there are no other structural and functional features present in the present embodiment.
It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.
In summary, the LED lamp adopts the matrix type, the matrix type LED lamp forms a plurality of rows of uniform rectangular light spots after projection, each row of LEDs is responsible for illumination of one area, each row of LEDs can be controlled respectively, light rays cannot enter eyes of a driver, direct glare caused by strong contrast of light brightness and background brightness is avoided, and driving safety is guaranteed. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (10)

1. A dynamic regulation and control method of matrix type LED light is characterized in that: the method comprises the following steps:
composed of matrix multi-row LED lamps P1，P2，P3…PnThe matrix type LED lamp forms multiple rows of uniform rectangular light spots after projection, and a road area needing light supplement illumination is divided into a plurality of road sub-areas S corresponding to the matrix type multiple rows of LED lamps1，S2，S3…SnIn a sub-area S of the roadnAnd corresponds to the road sub-area SnForward translation S1As the velocity measurement sub-region An-1Wherein n is a positive even number;
when the vehicle enters the speed measuring sub-area A at the speed v which does not exceed the intersection rulen-1And road sub-area S1，S2，S3…SnCorresponding matrix type multi-row LED lamp P1，P2，P3…PnStarting a series single-row single-control mode, and respectively and sequentially corresponding to the road sub-areas for light supplement; in velocity measurement sub-region An-1After the vehicle speed v is measured, the passing S is calculated in advancenSupplementing time of a sub-area of a road to determine that a vehicle enters SnP-th corresponding to sub-area of roadnLight supplement time t of train lampn(ii) a The vehicle passes through the road sub-area S at the speed v1，S2，S3…SnRespectively at times t1、t2、t3…tnAnd matrix multi-row LED lamp P1，P2，P3…PnThe serial connection starting sequence and the time length of the light supplementing sub-area correspond to each other; when the license plate is positioned at SnSub-region and corresponds to PnWhen the train lights are used for supplementing light and taking pictures, the driver is in the S state that the distance a between the driver and the license plate is different and the LED lamp is not onn-1A sub-area, thus not illuminated by glare, a being the average horizontal distance of the driver's eyes from the vehicle head;
when the vehicle is overspeed, the matrix multi-row LED lamps P1，P2，P3…PnStarting parallel and time-delay control mode to light up simultaneously to irradiate all sub-regions S1，S2，S3…SnSupplementing light to the whole road area; the lighting control time of the LED lamp is t1+t2+t3…+tn。
2. The dynamic regulation and control method of matrix LED lamp light according to claim 1, characterized in that:
the road sub-area S1，S2，S3…SnThe length calculation of (2) adopts a dichotomy, namely, the road area is divided into equal left sections of areas S by taking the central point of the light supplement area as the center and the driving direction of the vehicle as the coordinate axis1、S2…S(n/2)And a right segment region S(n/2+1)、S(n/2+2)…Sn；
One way to calculate the length of the sub-area of the road in the left section area is: (H-d)/S ═ H/(L + S + a), and as S(n/2)…S2、S1Sequentially calculating the length of each road subregion;
one way to calculate the length of the sub-area of the road in the right section area is: (H-d)/S ═ H-H + d)/(L-S) and as S(n/2+1)、S(n/2+2)…SnSequentially calculating the length of each road subregion;
wherein: n is the number of road subregions; h is the height between the eyes of a vehicle driver and the ground; a is the average horizontal distance between the eyes of the driver and the locomotive; d is the height of the license plate from the ground; h is the height of the LED lamp, and L is the horizontal distance between the LED lamp and the central point of the light supplementing area.
3. The dynamic regulation and control method of matrix LED lamp light according to claim 2, characterized in that:
n is 6; according to the length of the road sub-area in the left section area, a calculation formula is deformed to obtain: (H-d) (L + a)/(H-H + d), calculating the length of each sub-area of the left segment of the 6 road sub-areas: namely S3＝[(h-d)(L+a)/(H-h+d)]+1.5，S2＝[(h-d)(L+S3+a)/(H-h+d)]+1.5，S1＝[(h-d)(L+S3+S2+a)/(H-h+d)]+1.5；
According to the length of the road sub-area in the right section area, a calculation formula is deformed to obtain: and (H-d) L/H, calculating the length of each right sub-area in the 6 road sub-areas: namely S4＝[(h-d)L/H]+1.5，S5＝[(h-d)(L-S4)/H]+1.5，S6＝[(h-d)(L-S4-S5)/H]+1.5。
4. The dynamic regulation and control method of matrix LED lamp light according to claim 1, characterized in that:
velocity measurement sub-region An-1And road sub-area SnDiffering by one position and corresponding to a road sub-area SnForward translation S1Position, velocity measurement sub-region A0、A1、A2…An-1And road sub-area S1，S2，S3…SnForming a correspondence;
when the vehicle does not overspeed and drives into the road sub-area SnWhen the vehicle passes SnTime and S ofnLight supplement control time sequence tnIn correspondence with, at said tnP in matrix multi-row LED lamp in time periodnThe columns of lights are activated to light up and the remaining columns of LED lights are not lit.
5. The dynamic regulation and control method of matrix LED lamp light according to claim 1, 2, 3 or 4, characterized in that:
when the vehicle does not overspeed, the matrix multi-row LED lamps P1, P2 and P3 … Pn are started to be in a series single-row single-control mode, and the specific implementation modes respectively corresponding to the light supplement of the road subareas in sequence comprise that:
when the speed of the vehicle entering the speed measuring sub-area is less than the speed limit value, the vehicle respectively passes through the speed measuring sub-area An-1And the corresponding road sub-area SnIs formed as a base number through the road sub-areas SnTime t ofnTo determine vehicle entry SnSub-region corresponding to the P-thnAnd (5) light supplement time of the train lamps.
6. The dynamic regulation and control method of matrix LED lamp light according to claim 5, characterized in that: when the vehicle does not overspeed, the vehicle passing through the road sub-area S is obtained1，S2，S3…SnTime t of1、t2、t3…tnOne specific implementation of (a) includes:
when the speed of the vehicle entering the speed measuring sub-area is less than the speed limit value, a road sub-area S is formed by dividing each preset length of the road sub-area by the speed measured by the first speed measuring sub-area or the preset speed1，S2，S3…SnAs the corresponding time sequence t of the matrix multi-row LED lamps1、t2、t3…tnSo as to control the supplementary lighting of the LED lamp.
7. The dynamic regulation and control method of matrix LED lamp light according to claim 1, characterized in that:
according to the speed measuring sub-region An-1Whether the vehicle speed violates the traffic rule or not to determine the matrix type multi-row LED lamp P1，P2，P3…PnSelect concatenation tnDynamic regulation method or (t)1+t2+t3…+tn) A parallel type integral regulation and control method;
in velocity measurement sub-region A0、A1、A2…An-1If the series mode is determined first, but the traffic regulation is violated due to overspeed in the middle, thenStarting from the overspeed moment, the matrix multi-row LED lamp adopts1+t2+t3…+tn) The parallel mode is fully on.
8. The dynamic regulation and control method of matrix LED lamp light according to claim 1 or 2, characterized in that:
road sub-area S1，S2，S3…SnThe width of (a) is the same as the lane width;
road sub-area S1，S2，S3…SnThe length of the LED lamp is changed due to the change of the inclination angle and the height of the LED lamp;
the projection area of each column of LED lamps is matched with the area of the road subarea of the area irradiated by the LED lamps.
9. The dynamic regulation and control method of matrix LED lamp light according to claim 8, characterized in that:
a collimating lens and a free-form surface lens are respectively arranged in front of each row of LED lamps, so that the light of each row of LED lamps directly irradiates the corresponding road subarea, and uniform rectangular light spots matched with the area of the road subarea are formed.
10. A matrix LED lamp which characterized in that: the matrix type LED lamp adopts the dynamic regulation and control method of the matrix type LED lamp light as claimed in any one of claims 1 to 9.
CN202010187056.8A 2020-03-17 2020-03-17 Dynamic regulation and control method of matrix type LED lamp light and matrix type LED lamp applied by dynamic regulation and control method Active CN111511058B (en)

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