LED lamp with brightness compensation device
Technical Field
The invention belongs to the technical field of illumination, and particularly relates to an LED lamp with a brightness compensation device.
Background
In recent years, along with popularization of energy-saving technology, energy-saving lighting is a research focus in the field of lighting fixtures. The LED has the advantages of high luminous efficiency, good energy-saving effect, environmental protection and the like, and is valued in energy-saving lighting design. The use of LEDs as illumination lamps to replace conventional illumination lamps is a trend in the field of illumination technology today.
However, LEDs have some light attenuation when used for a long period of time. The light attenuation of the LED is that the brightness of the LED is lower than the original brightness after the LED is lightened for a period of time, and the lower part is the light attenuation of the LED. This light attenuation will vary considerably depending on the product and the conditions of use. Therefore, when the LED lighting device is used, the luminous efficiency is reduced, the brightness is gradually reduced due to the problem of light attenuation of the LED, the normal lighting effect is seriously affected, and the lamp is scrapped in advance.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides an LED lamp with a brightness compensation device, which can compensate light attenuation, dynamically adjust light brightness and be stored.
In order to achieve the technical purpose, the LED lamp with the brightness compensation device adopts the following technical scheme:
The utility model provides a LED lamp with brightness compensating device, includes lamp pole, lighting assembly and carries out the brightness compensating assembly of light decay compensation to lighting assembly, the lamp arm has been chosen outward to the lamp pole upper end, the lamp arm free end is equipped with lighting assembly, lighting assembly includes the lamp body that is connected with the lamp arm, be equipped with the light pearl in the lamp body, the lamp body top is equipped with the brightness compensating assembly, the brightness compensating assembly is including the support of arranging in the lamp body top in, and this support is rotatable accomodate to in the lamp body, the top of support is equipped with a plurality of brightness compensating plates, the brightness compensating plate is rotatable accomodate in the support, the brightness compensating plate is equipped with the light module that is used for compensating illumination light decay to one side of lighting assembly, the light module includes the compensation lamps and lanterns, locates the brightness sensor of light pearl top, locates the distance sensor of light pearl both sides and locates the controller in the middle part of the brightness compensating plate, the compensation lamps and lanterns are located brightness compensating plate bottom respectively for reinforcing current light pearl luminance.
Preferably, a rotating shaft is vertically arranged in the support, and a brightness compensation plate is arranged on the periphery of the rotating shaft.
Preferably, the brightness compensation plate is in a fan shape, and the fan-shaped brightness compensation plate can rotate along the rotating shaft to be received in the support.
Preferably, a first obtaining unit, a judging unit, a second obtaining unit and an adjusting unit are sequentially connected in the light emitting module, the first obtaining unit is used for obtaining a current environment brightness value, the judging unit is used for judging whether the obtained brightness value is smaller than a threshold value, the second obtaining unit is used for obtaining a dynamic distance between a current illuminating lamp bead and a user, and the adjusting unit is used for adjusting the brightness of the compensating lamp according to the obtained distance value.
Preferably, the obtaining of the threshold value is according to the following steps: 1) The lamp post is used as a circle center, and the single irradiation length of the lamp beads is used as a radius to form a visible total area; 2) Dividing the visual total area into a plurality of small areas and marking the small areas as corresponding coordinates; 3) When the minimum brightness and the maximum brightness of the illuminating lamp beads are regulated, brightness minimum values and brightness maximum values appear when corresponding to coordinate points in a plurality of small areas; 4) The measured brightness minimum and maximum values are neutralized and marked as corresponding zone thresholds.
Compared with the prior art, the invention has the beneficial effects that:
According to the invention, the brightness compensation component is arranged, the compensation lamp is utilized to carry out brightness compensation on the illuminating lamp beads, and the problem that safety accidents occur due to insufficient brightness in the illumination range after the pearl of the illuminating lamp is attenuated is avoided; the brightness sensor is arranged in the brightness compensation component, the current ambient brightness is monitored in real time, the brightness of the compensation lamp is dynamically adjusted and compensated after the brightness is compared with the threshold value of the corresponding coordinate point by combining the distance sensor, the ambient light brightness in the range of the user is enhanced or weakened, and the brightness adjustment efficiency of the bead end of the illuminating lamp is effectively improved; the rotating shaft is arranged in the brightness compensation component, and the brightness compensation plate is rotationally accommodated in the support, so that the use space is not occupied, and the compensation amplitude of the brightness compensation plate can be effectively adjusted.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of an operating state of the present invention;
FIG. 3 is a schematic view of another operational state of the present invention;
FIG. 4 is a block diagram of the light emitting module of the present invention;
Fig. 5 is a flow chart of the brightness compensation method in the present invention.
In the figure: 1. a lamp post; 2. a lamp arm; 3. a lamp housing; 4. a lamp bead; 5. a support; 6. a brightness compensation plate; 7. compensating the lamp; 8. a brightness sensor; 9. a distance sensor; 10. a controller; 11. a rotating shaft.
Detailed Description
The invention is further described below with reference to the drawings and detailed description:
as shown in fig. 1-5, an LED lamp with a brightness compensation device includes a lamp post 1, a lighting component and a brightness compensation component for performing light attenuation compensation on the lighting component, the upper end of the lamp post 1 is outwards provided with a lamp arm 2, the free end of the lamp arm 2 is provided with the lighting component, the lighting component includes a lamp housing 3 connected with the lamp arm 2, a lighting bead 4 is arranged in the lamp housing 3, the upper part of the lamp housing 3 is provided with the brightness compensation component, the brightness compensation component includes a support 5 arranged above the lamp housing 3, the support 5 is rotatably accommodated in the lamp housing 3, the top end of the support 5 is provided with a plurality of brightness compensation plates 6, the brightness compensation plates 6 are rotatably accommodated in the support 5, one side of the brightness compensation plates 6 is provided with a light emitting module for compensating the illumination light attenuation, the light emitting module includes a compensation lamp 7, a brightness sensor 8 arranged above the lighting bead 4, a distance sensor 9 arranged on two sides of the lighting bead 4, and a controller 10 arranged in the middle of the brightness compensation 6, and the compensation lamp 7 is respectively arranged at the bottom of the current brightness compensation plates 4.
A rotating shaft 11 is vertically arranged in the support 5, a brightness compensation plate 6 is arranged on the periphery of the rotating shaft 11, the brightness compensation plate 6 is in a fan shape, and the fan-shaped brightness compensation plate 6 can rotate along the rotating shaft 11 to be retracted into the support 5. The support is accommodated on the surface of the lamp housing 3 by the rotary shaft 11, so that the use space is not occupied, and the compensation amplitude is adjustable.
The light-emitting module is internally provided with a first acquisition unit, a judgment unit, a second acquisition unit and an adjustment unit which are sequentially connected, wherein the first acquisition unit is used for acquiring a current environment brightness value, the judgment unit is used for judging whether the acquired brightness value is smaller than a threshold value, the second acquisition unit is used for acquiring a dynamic distance between a current illuminating lamp bead and a receiver, and the adjustment unit is used for adjusting the brightness of the compensation lamp according to the acquired distance value.
In this embodiment, the brightness sensor 8 is configured to detect a current ambient brightness value, and start a terminal power supply at the top end of the lamp post 1 to enable the brightness sensor 8 to be in a working state, so as to detect the current ambient brightness value, i.e. step S1. Because the brightness sensor 8 is positioned above the illuminating lamp beads 4, the brightness of the illuminating lamp beads 4 can be automatically adjusted according to the current light brightness of the illuminating lamp beads 4, so that the best visual effect is brought to the user. The brightness sensor 8 is composed of two components, namely a projector and a light receiver, wherein the projector focuses the light emitted by the illuminating lamp beads 4, the light is transmitted to the light receiver and then to the receiving sensor, the receiving sensor converts the received light signal into an electric signal, and the electric signal is subjected to different switching and control actions in the next step.
After the current ambient brightness value is obtained, the current ambient brightness value is compared with a threshold value, and the operation step after the corresponding comparison result is executed by the controller 10, namely, step S2, wherein the threshold value is the minimum and maximum brightness values acceptable to human eyes in the current range, namely, the brightness requirement of the user is met in the threshold value and in the brightness environment larger than the threshold value. If the current ambient brightness value is 80Lux and the threshold value is 100Lux, judging that the current ambient brightness value is smaller than the threshold value, and executing the step S3; and if the current ambient brightness value is 150Lux and the threshold value is 100Lux, judging that the current ambient brightness value is greater than the threshold value, and executing the step S5. Wherein, the obtaining of the threshold value is according to the following steps: 1) The lamp post is used as a circle center, and the single irradiation length of the lamp beads is used as a radius to form a visible total area; 2) Dividing the visual total area into a plurality of small areas and marking the small areas as corresponding coordinates; 3) When the minimum brightness and the maximum brightness of the illuminating lamp beads are regulated, brightness minimum values and brightness maximum values appear when corresponding to coordinate points in a plurality of small areas; 4) The measured brightness minimum and maximum values are neutralized and marked as corresponding zone thresholds.
When the ambient brightness value is smaller than the threshold value, the distance between the current illuminating lamp bead 4 and the receiver is obtained through the distance sensor 9, namely, step S3. The distance sensors 9, also called displacement sensors, are disposed on both sides of the illuminating lamp beads 4, and are classified into laser distance sensors and ultrasonic distance sensors according to the measurement principle. The distance sensor 9 is generally composed of two components, placed at a set angle, one of which emits a short light pulse, and when the object is close enough, the object under test reflects infrared light onto the other detecting element, and the distance to the object is calculated by measuring the time from the emission of the light pulse to the reflection of the light pulse by the object. The distance value between the current illuminating lamp bead 4 and the receiver detected by the distance sensor 9 can be 1 meter, 2 meters, 3 meters, 4 meters and the like.
The luminance of the current illuminating lamp bead 4 is increased or decreased according to the magnitude of the distance value, and since the distance between the recipient and the illuminating lamp bead 4 is in dynamic variation, the display luminance of the illuminating lamp bead 4 can be adjusted according to the magnitude variation of the distance value, i.e., step S4. For example, when the distance is small, i.e. the distance between the recipient and the lighting beads 4 is very short, the compensation lamp 7 stops starting, and the lighting beads 4 reduce the number of partial lighting; when the distance is larger, namely the distance between the receiver and the illuminating lamp beads 4 is longer, the compensating lamp 7 is started, and the brightness of the illuminating lamp beads 4 is enhanced.
When the ambient brightness value is greater than the threshold value, the user will not be affected by the external ambient brightness within the projection range of the illumination lamp beads 4 under the current ambient brightness, i.e. step S5.
The brightness compensation method in this embodiment includes: s1: acquiring a current environment brightness value; s2: judging whether the current brightness value is smaller than a threshold value or not; s3: if yes, obtaining the distance value between the current receiver and the illuminating lamp bead; s4: adjusting the brightness of the compensating lamp according to the distance value to compensate the pearl attenuation of the illuminating lamp; s5: the current user is not affected by the pearlescent attenuation of the lighting lamp.
In summary, the present invention is not limited to the preferred embodiments, but includes all equivalent changes and modifications in shape, construction, characteristics and spirit according to the scope of the claims.