CN110677958B - Light attenuation compensation method based on knowledge base - Google Patents
Light attenuation compensation method based on knowledge base Download PDFInfo
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- CN110677958B CN110677958B CN201910862457.6A CN201910862457A CN110677958B CN 110677958 B CN110677958 B CN 110677958B CN 201910862457 A CN201910862457 A CN 201910862457A CN 110677958 B CN110677958 B CN 110677958B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
- G06N5/00—Computing arrangements using knowledge-based models
- G06N5/02—Knowledge representation; Symbolic representation
- G06N5/022—Knowledge engineering; Knowledge acquisition
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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
Abstract
The application relates to dimming control of an LED lamp and light attenuation compensation control of the LED lamp, in particular to an LED light attenuation compensation method based on a knowledge base. The application provides a leave LED lamp that sends out light allowance, utilizes artificial intelligence technique to establish a knowledge base, and all operational data of real-time supervision LED through certain algorithm, come the volume of definite light decay compensation according to operational data and knowledge base for in longer time, LED's illumination can have stable output, reduces the light decay speed of LED lamp on the whole. The LED lamp has the advantages that the light decay speed of the whole LED lamp can be well reduced by reserving a certain light-emitting margin in the production of the LED lamp, the service life is prolonged on the whole, and the maintenance pressure of the LED lamp is reduced.
Description
Technical Field
The application relates to the technical field of lighting equipment, in particular to a light attenuation compensation method based on a knowledge base.
Background
A Light Emitting Diode (LED), a solid state semiconductor device capable of converting electrical energy into visible light, can directly convert electricity into light. The LED lamp has the great advantages of high luminous efficiency, energy conservation and environmental protection, thereby being widely applied in the field of illumination.
The luminous body part of the LED consists of an LED chip body and fluorescent materials. At rated temperature, the service life of the LED can reach more than 10 ten thousand hours, so that the LED is very long. However, since the LED lamp usually works in different places, it is a large heating element, and some factors may cause the luminous efficiency of the LED lamp to be degraded. One factor is the quality of the LED product itself: the adopted LED chip has poor physique and rapid brightness attenuation; the production process has the defects that the heat dissipation of the LED chip cannot be well LED out from the PIN foot, so that the temperature of the LED chip is too high, and the attenuation of the chip is aggravated. Another factor is the use condition issue: the LEDs are driven by constant current, and some LEDs are driven by voltage to be attenuated too fast; the drive current is greater than the rated drive condition.
In actual use, the light attenuation of the LED lamp cannot be avoided, generally, the light attenuation is calculated to be normal within 5% in one year and is 15% in three years, and if the light attenuation of the lamp exceeds 30%, the LED lamp is recommended to be replaced. In order to prolong the effective service life of the LED lamp, if a reasonable pre-configuration scheme is available, a certain light-emitting allowance is reserved when the LED lamp is designed, and the light-emitting output of the whole lamp is gradually supplemented by the reserved allowance according to a certain rule in the using process, so that the effect of greatly prolonging the service life of the LED lamp can be achieved.
In order to solve the problem of short service life of the lighting device in the related art due to fast light attenuation, no effective solution has been proposed at present.
Disclosure of Invention
The main aim of this application lies in, a LED lamp that leaves luminous surplus is provided, utilize artificial intelligence technique to establish a knowledge base, all working data of real-time supervision LED, according to working data and knowledge base, through certain algorithm, confirm the volume of light decay compensation, make in longer time, the illumination of LED lamp can have stable output, reduce the light decay speed of LED lamp on the whole, and then solve the lighting apparatus among the correlation technique because the light decay is short problem of lighting apparatus life that leads to fast.
To achieve the above object, according to one aspect of the present application, there is provided a knowledge-base-based optical attenuation compensation method.
The light attenuation compensation method based on the knowledge base comprises the following steps: acquiring working data of the LED lamp; constructing a knowledge base, wherein the knowledge base is used for monitoring the working data of the LED lamp in real time; and determining the light attenuation compensation quantity of the LED lamp through a preset rule according to the working data of the LED lamp and the knowledge base.
Further, the determining the light attenuation compensation quantity of the LED lamp according to the working data of the LED lamp and the knowledge base by the preset rule comprises: a controller of the LED lamp measures first working data of the LED lamp through a sensor circuit; analyzing first working data of the LED lamp; performing linear regression on the work data of the LED lamp obtained after analysis to obtain compensation calculation formulas of different sections, and forming a redundancy control calculation rule of the LED lamp according to the compensation calculation formulas of the different sections; and constructing a knowledge base based on the redundancy control calculation rule of the LED lamp.
Further, the determining the light attenuation compensation amount of the LED lamp according to the working data of the LED lamp and the knowledge base by a preset rule includes: the controller of the LED lamp measures second working data of the LED lamp through the sensor circuit; inputting second working data of the LED lamp into the knowledge base for processing to obtain redundant control parameters of the LED lamp; and calculating to obtain the light attenuation compensation quantity of the LED lamp based on the redundant control parameters of the LED lamp and the ideal light attenuation value of the LED lamp.
Furthermore, the redundant control circuit of the LED lamp is adjusted through the light attenuation compensation quantity of the LED lamp so as to control the redundant illumination part of the LED lamp to emit light and form light attenuation compensation illumination.
In the embodiment of the application, the LED lamp provided by the application has a redundant design, and the light emitting function of the redundant part can be started when needed, so that the insufficient light emitting of the light emitting part of the LED main body is gradually supplemented. An artificial intelligence technology is adopted, and daily work data of the LEDs are combined to construct a knowledge base programmed by a computer, wherein the knowledge base is a knowledge base for light attenuation compensation. The controller measures the working data of the LED lamp through the sensor circuit, analyzes the working data, obtains a sectional compensation calculation formula by using linear regression, forms a redundancy control calculation rule according to different sections, and the rule forms a knowledge base. All working data of the LED, including ambient temperature, ambient illumination, LED lamp temperature and LED lamp light intensity, are acquired in real time through a sensor on the LED controller. And inputting the working data into a control rule of the knowledge base to obtain redundancy control parameters, and calculating to obtain compensation control quantity by combining ideal attenuation values.
The invention adopts artificial intelligence technology, combines the knowledge of the knowledge base with the LED working data acquired in real time, obtains compensation control quantity according to the light attenuation compensation experience in actual use, and uses the compensation control quantity to adjust the Pulse Width Modulation (PWM) of the redundant control circuit, thereby controlling the redundant illumination part to emit light, forming light attenuation compensation illumination, achieving the balanced and lasting illumination effect and reducing the light attenuation speed of the LED lamp.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:
FIG. 1 is a schematic flow chart diagram of a knowledge-base-based optical attenuation compensation method according to an embodiment of the present application; and
FIG. 2 is a schematic flow chart of constructing a knowledge base according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
According to an embodiment of the present invention, there is provided a method for compensating optical attenuation based on a knowledge base, as shown in fig. 1, the method specifically includes the following steps S101 to S104:
and step S101, acquiring working data of the LED lamp.
The working data obtained by the application comprises: the output light intensity of the current LED lamp, the temperature of the LED lamp, the ambient temperature and the working time of the LED lamp.
The method and the device adopt a built-in controller and a sensor to acquire working data. The controller has a sampling circuit and an amplifying circuit.
The output light intensity of the LED lamp is read by the controller by using a photosensitive resistor as a sensor. The temperature of the LED lamp and the ambient temperature are read by the temperature sampling chip. The operating time of the LED lamp is recorded by a timer inside the controller.
And step S102, constructing a knowledge base.
As shown in fig. 2, the whole life cycle of the LED lamp is analyzed to obtain the light emission attenuation data of the LED lamp under different working environments and different working durations. The data includes: the LED lamp consumes power, output light intensity, ambient temperature, LED lamp temperature, etc., and the measured data includes a corresponding timestamp. And carrying out linear regression analysis according to the data to obtain a calculation formula of linear fitting in different time periods. And constructing a decision rule of the knowledge base according to the segmented calculation formula. Each decision rule determines the proportion of compensating illumination that should be put into use under the conditions of actual power consumption and luminous intensity of the LED lamp in use. This knowledge base is the basis of knowledge for making a knowledge base-based decision on light attenuation compensation.
And step S103, determining the light attenuation compensation quantity of the LED lamp in the working state.
When the light attenuation compensation quantity is calculated, the working data of the LED lamp is input into the knowledge base to calculate the redundancy control quantity.
According to the method, two calculation results are needed to calculate the redundancy control quantity, one calculation result is the recommended control quantity calculated according to the knowledge base, and the other calculation result is the ideal control quantity calculated according to the ideal attenuation curve.
Step S104, adjusting redundant illumination control.
After the redundant control quantity output by the knowledge base is obtained, the control quantity parameter is used as a control basis to adjust the output unit of the controller.
The control output of this application adopts the mode that PWM adjusted, uses the redundant control parameter to adjust PWM's duty cycle according to the proportion, reaches the purpose of the redundant output light intensity of control LED.
It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and they may alternatively be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, or fabricated separately as individual integrated circuit modules, or fabricated as a single integrated circuit module from multiple modules or steps. Thus, the present invention is not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (4)
1. A method for compensating light attenuation based on a knowledge base is characterized by comprising the following steps:
acquiring working data of the LED lamp, wherein the acquired working data comprise: the method comprises the following steps that currently, working data are obtained in a mode of arranging a controller and a sensor in the LED lamp, the controller is provided with a sampling circuit and an amplifying circuit, the output light intensity of the LED lamp is read by the controller by taking a photosensitive resistor as the sensor, the temperature and the ambient temperature of the LED lamp are read by a temperature sampling chip, and the working time of the LED lamp is recorded by a timer in the controller;
constructing a knowledge base, wherein the knowledge base is used for monitoring the working data of the LED lamp in real time and specifically comprises the following steps: analyzing the whole life cycle of the LED lamp to obtain light-emitting attenuation data of the LED lamp under different working environments and different working time lengths, wherein the data comprise the consumed power of the LED lamp, the output light intensity, the ambient temperature and the temperature of the LED lamp, the measured data comprise corresponding timestamps, performing linear regression analysis according to the data to obtain a calculation formula of linear fitting in different time periods, and constructing decision rules of a knowledge base according to the calculation formula in different sections, wherein each decision rule determines the proportion of compensating illumination which should be put into the LED lamp under the conditions of actual consumed power and light-emitting intensity in use;
according to the working data of the LED lamp and the knowledge base, the light attenuation compensation quantity of the LED lamp is determined through a preset rule, and the method specifically comprises the following steps: when the light attenuation compensation quantity is calculated, working data of the LED lamp is input into the knowledge base to calculate the redundancy control quantity, after the redundancy control quantity output by the knowledge base is obtained, the control quantity parameter is used as a control basis to adjust an output unit of the controller, the control output adopts a PWM (pulse-width modulation) adjustment mode, the redundancy control parameter is used for adjusting the duty ratio of PWM according to the proportion, and the purpose of controlling the redundancy output light intensity of the LED is achieved.
2. The method of claim 1, wherein the determining the amount of the LED lamp light attenuation compensation according to the LED lamp working data and the knowledge base by the preset rules comprises:
a controller of the LED lamp measures first working data of the LED lamp through a sensor circuit;
analyzing first working data of the LED lamp;
performing linear regression on the work data of the LED lamp obtained after analysis to obtain compensation calculation formulas of different sections, and forming a redundancy control calculation rule of the LED lamp according to the compensation calculation formulas of the different sections;
and constructing a knowledge base based on the redundancy control calculation rule of the LED lamp.
3. The method of claim 1, wherein the determining the light attenuation compensation amount of the LED lamp according to the working data of the LED lamp and the knowledge base by a preset rule comprises:
the controller of the LED lamp measures second working data of the LED lamp through the sensor circuit;
inputting second working data of the LED lamp into the knowledge base for processing to obtain redundant control parameters of the LED lamp;
and calculating to obtain the light attenuation compensation quantity of the LED lamp based on the redundant control parameters of the LED lamp and the ideal light attenuation value of the LED lamp.
4. The knowledge-base-based optical attenuation compensation method of claim 1, wherein: and adjusting the redundant control circuit of the LED lamp through the light attenuation compensation quantity of the LED lamp so as to control the redundant illumination part of the LED lamp to emit light and form light attenuation compensation illumination.
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| CN112333891B (en) * | 2020-10-30 | 2023-01-20 | 中车青岛四方机车车辆股份有限公司 | Lighting lamp fault prediction and health management device and method and railway vehicle |
| CN115648629A (en) * | 2022-10-24 | 2023-01-31 | 上海复志信息科技股份有限公司 | LED light attenuation compensation device and method for DLP light machine |
| CN116539547A (en) * | 2023-07-04 | 2023-08-04 | 芒果传感技术(深圳)有限公司 | Portable water quality analyzer and water quality safety production traceability system |
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