CN118510108A

CN118510108A - Over-temperature protection method and system for LED lamp

Info

Publication number: CN118510108A
Application number: CN202410430945.0A
Authority: CN
Inventors: 吴维亮
Original assignee: Guangzhou Desheng Photoelectric Technology Inc
Current assignee: Guangzhou Desheng Photoelectric Technology Inc
Priority date: 2024-04-11
Filing date: 2024-04-11
Publication date: 2024-08-16

Abstract

The invention relates to an over-temperature protection method and system of an LED lamp, comprising the following steps of S1, establishing a basic model, and determining the layout and distribution condition of stage lamps; according to the number and distribution of stage lamps, arranging a temperature sensor and a heat dissipation device on the stage lamps, and installing the temperature sensor and the heat dissipation device; designing, building a temperature and heat dissipation model according to the stage lamp installation and the heat dissipation device position, and initializing an over-temperature threshold; and S2, information acquisition, namely acquiring stage lamp temperature information and environment temperature information in real time through a temperature sensor. According to the system and the method, through real-time monitoring of the working temperature of the LED lamp and combination of two-stage threshold monitoring, corresponding protection measures can be adopted when the temperature is abnormally increased, so that equipment is prevented from being damaged due to overheating; and further improve equipment stability, be convenient for in time discover and handle the excessive temperature problem, can ensure the stable work of LED lamp, reduce trouble and down time because of overheated lead to.

Description

Over-temperature protection method and system for LED lamp

Technical Field

The invention belongs to the field of LED classification, and particularly relates to an over-temperature protection method and system for an LED lamp.

Background

Over-temperature protection methods for stage lighting LED lamps have been widely used and focused in recent years. With the continuous development of the LED technology, the power and the brightness of the LED lamp are obviously improved, but the problem of overheating is also brought. In order to ensure safe operation and service life of the LED lamp, an over-temperature protection method becomes an indispensable technical means.

The electronic engineering provides a basic theory and an implementation means for over-temperature protection. Excessive temperatures in LED fixtures can cause severe lamp dimming and even burning, and therefore electronic components and circuits are required to monitor the temperature and control the temperature accordingly. Thermal design, reliability design, control theory and the like in electronic engineering provide important technical support for over-temperature protection.

Thermodynamics is the subject of studying heat transfer and conversion, providing a theoretical basis for over-temperature protection. In LED light fixtures, the means of heat transfer include heat conduction, heat convection, heat radiation, and the like. Knowing these basic rules can help us to better understand the temperature change rules of the LED lamp, thereby designing a more effective over-temperature protection method. For example, materials with good heat conduction performance are adopted to improve heat dissipation efficiency, or the structural design of the lamp is optimized to reduce thermal resistance.

In addition, the background technology related to the over-temperature protection method of the stage lighting LED lamp also comprises optical engineering and illumination design. Photometry and colorimetry in optical engineering provide theoretical basis for optical performance of the LED lamp. Lighting designs focus on how to reduce the temperature and power consumption of a luminaire while meeting lighting requirements. By optimizing the illumination design and the heat dissipation design, the energy efficiency and the reliability of the LED lamp can be further improved.

In summary, we propose an over-temperature protection method and system for an LED lamp.

Disclosure of Invention

In view of the defects in the prior art, the invention aims to provide an over-temperature protection method and system for an LED lamp, which can effectively prevent the LED from being over-heated, greatly prolong the service life of the LED lamp and reduce the maintenance cost of the LED lamp.

In a first aspect of the present invention, an over-temperature protection method for an LED lamp is provided, including:

Step S1, building a basic model, and determining the layout and distribution conditions of stage lamps; according to the number and distribution of stage lamps, arranging a temperature sensor and a heat dissipation device on the stage lamps, and installing the temperature sensor and the heat dissipation device; designing, building a temperature and heat dissipation model according to the stage lamp installation and the heat dissipation device position, and initializing an over-temperature threshold;

step S2, information acquisition, namely acquiring stage lamp temperature information and environment temperature information in real time through a temperature sensor, collecting working information of a heat radiating device in real time, and importing the information into a temperature and heat radiating model;

Step S3, importing information to perform fault diagnosis, importing the information in the step S2 into a model in the step S1 to analyze, and judging the current fault state and the lamp state;

S4, performing fault processing, and performing fault processing according to the fault state;

and S5, summarizing and counting the big data, correcting the threshold value parameters of fault treatment, and importing the threshold value parameters into the step S3 for correction.

Further, the step S1 includes:

Step S11 determines the layout and distribution of stage lamps: the specific positions, the number and the distribution condition of stage lamps are known in detail, and a basis is provided for the installation of subsequent sensors and heat dissipation devices;

Step S12, installing a temperature sensor and a heat dissipation device: according to the layout and distribution of stage lamps, a temperature sensor and a heat dissipation device are arranged on each stage lamp, so that the temperature change can be monitored in real time and heat dissipation can be effectively carried out;

Step S13, establishing a temperature and heat dissipation model: based on the layout of stage lamps, the positions of the sensors and the heat dissipation device, a mathematical model describing the heat distribution of stage lamplight is established by utilizing the principle of heat transfer;

Step S14 initializes an over-temperature threshold: and setting an initial overtemperature threshold for subsequent fault diagnosis according to the model and the manufacturer safety standard, wherein the overtemperature threshold comprises two parts, wherein the first overtemperature threshold is a starting threshold of the heat radiating device, and the second overtemperature threshold is a dangerous overtemperature threshold.

Further, the step S2 includes:

Step S21, monitoring the real-time temperature: the working temperature information of the stage lamp is acquired in real time through the temperature sensor, so that the accuracy and the instantaneity of the data are ensured;

step S22, collecting environmental temperature information: meanwhile, temperature information of surrounding environment is collected to consider the influence of the environment on the heat dissipation effect of the stage lamp;

step S23, collecting working information of the heat dissipating device: monitoring the working state of the heat dissipating device, such as the fan rotation speed and the heat dissipating device temperature, and providing more dimensional data for subsequent analysis;

step S24, information importing model: and importing the acquired temperature data, the ambient temperature and the working information of the heat dissipation device into a previously established model, and providing data support for subsequent fault diagnosis.

Further, the step S3 includes:

step S31, data preprocessing: carrying out necessary preprocessing on the imported information, including data cleaning and outlier processing;

Step S32, model analysis: performing fault diagnosis on the current data by using the established model, and judging whether an overtemperature fault exists or not and the type and the position of the fault, wherein the overtemperature fault is divided into a normal state, a first overtemperature, a second overtemperature and a serious overtemperature according to an overtemperature threshold;

step S33, judging the state of the lamp: and judging the working state of the lamp according to the diagnosis result.

Further, the step S4 includes:

s41, controlling a heat dissipation device: according to the diagnosis result, the working state of the heat radiator is adjusted, the heat radiator is closed in a normal state, the heat radiator is started when the primary overtemperature occurs, the power of the muscle radiator is increased when the secondary overtemperature occurs, a countdown alarm is carried out, and the system is closed after the serious overtemperature occurs;

s42, recording and tracking: recording fault processing process and result.

Further, the step S5 includes:

S51, data summarizing and arranging: summarizing and sorting information such as historical temperature data and fault records to form a basis for big data analysis;

s52 statistical analysis: analyzing the big data by using a statistical analysis method, and mining valuable information of temperature change rules and fault modes;

S53, correcting threshold parameters: correcting and optimizing threshold parameters of the over-temperature protection system according to the statistical analysis result;

s54, modifying a threshold parameter import model: and re-importing the corrected threshold parameters into the model to further improve the accuracy and reliability of fault diagnosis.

The second aspect of the present invention also includes an over-temperature protection system for an LED lamp, comprising:

The basic model building module is used for building a mathematical model describing stage lighting heat distribution by utilizing a heat transfer theory based on the layout of stage lamps, the positions of the sensors and the heat dissipation device, and initializing model information;

The information acquisition module is used for acquiring temperature information of the LED lamp, environmental temperature information, time information and working information of the heat dissipation device in real time;

the fault diagnosis module is used for carrying out fault diagnosis according to the information acquired by the information acquisition module;

the fault processing module is used for carrying out different fault processing according to fault diagnosis;

And the big data summarizing and counting module is used for collecting the information and carrying out statistical analysis to output a threshold value parameter correction basic model threshold value.

Further, the information acquisition module includes:

temperature sensor submodule: the temperature information of the LED lamp is collected in real time;

ambient temperature sensor submodule: the system is used for collecting temperature information of the surrounding environment;

and a time module: the method is used for acquiring the current system time;

The heat abstractor operating condition monitors submodule: the device is used for monitoring the working state of the heat dissipation device.

Further, the fault diagnosis module includes:

And a data preprocessing module: carrying out necessary preprocessing on the imported information, including data cleaning and outlier processing;

Model analysis module: performing fault diagnosis on the current data by using the established model, and judging whether over-temperature faults exist or not and the type and the position of the faults; the over-temperature fault is divided into a normal state a first-stage over-temperature secondary overtemperature and severe overtemperature;

the lamp state judging module is used for: and judging the working state of the lamp according to the diagnosis result.

Further, the fault handling module includes:

The heat dissipation device control module is used for controlling the heat dissipation device;

and the LED lamp control module is used for controlling the LED lamp.

The invention has the following beneficial effects: by monitoring the working temperature of the LED lamp in real time and combining two-stage threshold monitoring, corresponding protection measures can be taken when the temperature is abnormally increased, so that equipment is prevented from being damaged due to overheating; and further improve equipment stability, be convenient for in time discover and handle the excessive temperature problem, can ensure the stable work of LED lamp, reduce trouble and down time because of overheated lead to.

Drawings

The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, like reference numerals being used to refer to like parts throughout the several views. It is apparent that the drawings in the following description are only some of the embodiments described in the embodiments of the present invention, and that other drawings may be obtained from these drawings by those of ordinary skill in the art.

FIG. 1 is a flow chart of an over-temperature protection method for an LED lamp according to an embodiment of the invention;

Fig. 2 is a block diagram of an over-temperature protection system of an LED lamp according to an embodiment of the present invention.

Detailed Description

In order to make the technical solutions of the embodiments of the present invention better understood by those skilled in the art, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, shall fall within the scope of the invention.

In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the concepts of the present disclosure.

In the description of the present invention, it should be noted that unless explicitly stated and limited otherwise, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the invention. Rather, they are merely examples of methods and systems that are consistent with aspects of the invention as detailed in the accompanying claims.

The invention provides an over-temperature protection method and system for an LED lamp, which can improve the stability of equipment, prolong the service life, save energy, protect environment, simplify maintenance and reduce operation cost, and provide powerful protection for the reliable operation of a lighting system.

System embodiment

The invention also comprises an over-temperature protection system of the LED lamp, which comprises:

The over-temperature protection system of the LED lamp comprises the following modules:

And a basic model building module: the module is responsible for establishing a mathematical model describing the heat distribution of stage lighting by utilizing the principle of heat transfer based on the layout of stage lamps, the positions of the sensors and the heat dissipation device. In addition, the method also initializes model information and provides a basis for subsequent fault diagnosis.

And the information acquisition module is used for: the module has the main functions of collecting temperature information, environment temperature information, time information of the LED lamp and working information of the heat radiating device in real time. This information is critical for subsequent fault diagnosis.

Temperature sensor submodule: the working temperature of the LED lamp is monitored and collected in real time, and the accuracy and the instantaneity of data are ensured.

Ambient temperature sensor submodule: the LED lamp heat dissipation system is used for collecting temperature data of the surrounding environment so as to consider the influence of the environment on the LED lamp heat dissipation effect.

And a time module: the current system time is provided, and the time stamp of the data is ensured to be accurate.

The heat abstractor operating condition monitors submodule: the working state of the heat dissipating device is monitored, information such as the rotation speed of the fan, the temperature of the heat dissipating device and the like is collected, and more dimension data are provided for subsequent analysis.

And a fault diagnosis module: the module is responsible for fault diagnosis according to the information acquired by the information acquisition module. The system comprises sub-modules of data preprocessing, model analysis, lamp state judgment and the like.

And a data preprocessing module: the collected information is subjected to necessary preprocessing such as data cleaning and outlier processing to ensure the accuracy and reliability of the data.

Model analysis module: and carrying out fault diagnosis on the current data by using the established model, and judging whether over-temperature faults exist or not and the type and the position of the faults. The over-temperature fault is divided into a normal state, a first over-temperature, a second over-temperature and a serious over-temperature according to an over-temperature threshold value.

The lamp state judging module is used for: and judging the working state of the LED lamp according to the diagnosis result.

And a fault processing module: the module is responsible for carrying out corresponding fault processing according to the fault diagnosis result. The LED lamp comprises a heat dissipation device control module and an LED lamp control module.

And the heat dissipation device control module is as follows: and adjusting the working state of the heat radiating device according to the diagnosis result. For example, the heat sink is turned off in a normal state, the heat sink is turned on when the primary is over-warmed, the heat sink power is increased when the secondary is over-warmed, and a countdown alarm is given. The system is shut down after severe over-temperature to prevent further damage to the equipment.

LED lamp control module: and controlling the working state of the LED lamp according to the fault diagnosis result. For example, when an over-temperature fault occurs, the brightness of the LED lamp may be turned off or reduced to prevent the device from overheating.

Big data summarization statistics module: the module is responsible for summarizing and sorting the information, analyzing big data by using a statistical analysis method, and outputting a threshold parameter correction basic model threshold. The threshold parameters are continuously corrected and optimized by excavating valuable information of temperature change rules and fault modes, so that the accuracy and reliability of fault diagnosis are further improved.

Method embodiment

The invention provides an over-temperature protection method of an LED lamp, which comprises the following steps:

Further, the step S1 includes:

Further, the step S2 includes:

Further, the step S3 includes:

Further, the step S4 includes:

s42, recording and tracking: recording fault processing process and result.

Further, the step S5 includes:

The actual implementation steps of the invention are as follows:

and (3) building a basic model: first, the layout and distribution of the LED lamps is determined. The specific location, number and distribution of each LED lamp is known in detail to provide a basis for the subsequent installation of the sensor and heat sink.

Installing a temperature sensor and a heat dissipation device: according to the layout and distribution of the LED lamps, a temperature sensor and a heat dissipation device are arranged on each LED lamp. The temperature sensor is used for monitoring the working temperature of the LED lamp in real time, and the heat dissipation device is used for effectively dissipating heat and ensuring that the LED lamp operates in a normal working temperature range.

Establishing a temperature and heat dissipation model: based on the layout of the LED lamps, the positions of the sensors and the heat dissipation device, a mathematical model describing the heat distribution of the LED lamps is established by utilizing the principle of heat transfer. The model can describe the temperature change and the heat dissipation process of the LED lamp in the working state.

Initializing an over-temperature threshold: and setting an initial over-temperature threshold according to the established model and the manufacturer safety standard. These thresholds are used for subsequent fault diagnosis to determine whether an over-temperature fault has occurred in the LED lamp.

And (3) information acquisition: working temperature information of the LED lamp is collected in real time through the temperature sensor, and meanwhile temperature information of surrounding environment is collected. In addition, the working state of the heat dissipating device is monitored, and data such as the fan rotation speed, the heat dissipating device temperature and the like are collected. This information will be used for subsequent fault diagnosis.

And importing information to perform fault diagnosis: and importing temperature data, ambient temperature and heat dissipating device working information acquired in real time into a previously established model, and performing fault diagnosis on the current data by using the established model. And judging whether an over-temperature fault exists or not and judging the type and the position of the fault according to the set over-temperature threshold.

And (3) performing fault treatment: and adjusting the working state of the heat radiating device according to the diagnosis result. For example, the heat sink is turned off in a normal state, the heat sink is turned on when the primary is over-warmed, the heat sink power is increased when the secondary is over-warmed, and a countdown alarm is given. The system is shut down after severe over-temperature to prevent further damage to the equipment.

Big data summarization statistics correction fault handling threshold parameters: and (3) summarizing and arranging information such as historical temperature data and fault records to form a basis for analyzing big data. And analyzing the big data by using a statistical analysis method, and mining valuable information of temperature change rules and fault modes. And correcting and optimizing the threshold parameters of the over-temperature protection system according to the statistical analysis result.

Threshold parameter lead-in model correction: and re-importing the corrected threshold parameters into the model to further improve the accuracy and reliability of fault diagnosis. By continuously correcting and optimizing the threshold parameters, the performance of the over-temperature protection system can be gradually improved, and the detection and processing capacity of the over-temperature protection system for the LED lamp over-temperature faults can be improved.

To sum up: when the temperature of a certain area exceeds a set first-level threshold value in the implementation process, the active heat dissipation device of the area is triggered. If the temperature has successfully fallen within the safe range for a certain period of time (e.g., 5 minutes), the system will record this over-temperature event and continue monitoring. Otherwise, the system triggers a secondary over-temperature protection. And (3) secondary over-temperature protection: first, the system will check if the heat sinks are working in all areas. If the heat sinks in all areas are operating properly, but the temperature is still not decreasing, the system will alert and inform the user which area of the heat sink may be problematic. At the same time, the system is automatically powered down in order to prevent further damage to the equipment. In addition, the system records this event for subsequent troubleshooting and repair.

Finally, it should be noted that the above embodiments are merely for illustrating the technical solution of the embodiments of the present invention, and are not limiting. Although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the invention, and any changes and substitutions that would be apparent to one skilled in the art are intended to be included within the scope of the present invention.

Claims

1. An over-temperature protection method for an LED lamp is characterized by comprising:

2. The method for protecting an LED lamp against over-temperature according to claim 1, wherein the step S1 comprises:

3. The method for protecting an LED lamp against over-temperature according to claim 2, the method is characterized in that the step S2 comprises the following steps:

4. The method for protecting an LED lamp against over-temperature according to claim 3, wherein the step S3 comprises:

5. The method for protecting an LED lamp against over-temperature according to claim 3, wherein the step S4 comprises:

s42, recording and tracking: recording fault processing process and result.

6. The method for protecting an LED lamp against over-temperature according to claim 3, wherein the step S5 comprises:

7. An over-temperature protection system for an LED lamp, characterized by being configured to perform the over-temperature protection method for an LED lamp according to any one of claims 1 to 6, comprising:

8. The system of claim 7, wherein the information acquisition module comprises:

and a time module: the method is used for acquiring the current system time;

9. The system of claim 8, wherein the fault diagnosis module comprises:

Model analysis module: performing fault diagnosis on the current data by using the established model, and judging whether over-temperature faults exist or not and the type and the position of the faults; the over-temperature fault is classified into a normal state, a first over-temperature, a second over-temperature and a severe over-temperature. ;

10. The system of claim 9, wherein the fault handling module comprises:

and the LED lamp control module is used for controlling the LED lamp.