A control system for high-power semiconductor lighting devices

Abstract

The present invention discloses a high-power semiconductor lighting device control system, which relates to the field of semiconductor lighting technology. The adjustable power range of the lighting device and the average theoretical heat production value in different power ranges are set by adjusting the standard library, and then the temperature of the lighting device itself and the ambient temperature are obtained by a data acquisition module. The data obtained by the data acquisition module is processed by a data processing module to determine the state and environment of the lighting device itself. The temperature of the lighting device itself is combined with the ambient temperature through a data analysis module to analyze the lighting device in different ambient temperatures, so as to more reasonably select the working power of the lighting device, so that the heat generated by the lighting device at different powers is harmonized with the ambient temperature, so that the lighting device is always within a suitable temperature parameter range, and the influence of excessively high or low temperature on the performance of the lighting device is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of semiconductor lighting, in particular to a high-power semiconductor lighting device control system. Background Art

[0002] LED lighting technology has advantages that traditional lighting technology cannot match, and has now been widely used. LED lighting fixtures have the advantages of high luminous flux and low power consumption.

[0003] In actual use, temperature parameters have a great influence on the performance of semiconductor lighting devices. High-power semiconductor lighting devices often generate a lot of heat during use. The difference in heat generated under different power operation is also very large. How to reconcile the generated heat and the ambient temperature is a problem we need to solve. To this end, a high-power semiconductor lighting device control system is now provided. Summary of the invention

[0004] The object of the present invention is to provide a high-power semiconductor lighting device control system.

[0005] The object of the present invention can be achieved by the following technical solutions: A high-power semiconductor lighting device control system includes a control center, the control center is connected to an adjustment standard library and a data acquisition module; the adjustment standard library is used to set the lighting reference information of the lighting device, and the lighting reference information includes the adjustable power range of the lighting device and the average theoretical heat production value in different power ranges;

[0006] The data acquisition module is used to obtain the working environment temperature and the temperature of the lighting device, and at the same time to exchange data with the lighting module, and send the acquired data to the data processing module;

[0007] The data acquired by the data acquisition module is processed by the data processing module to judge the temperature of the lighting device itself and the ambient temperature in the lighting area, and then the processing result is sent to the data analysis module;

[0008] The lighting state of the lighting device is analyzed by the data analysis module to obtain the analysis result of the lighting device, and the corresponding lighting adjustment instruction is generated according to the analysis result, and then the adjustment instruction is sent to the lighting adjustment module;

[0009] The lighting adjustment module adjusts the working power of the lighting device accordingly according to the lighting adjustment instruction.

[0010] Furthermore, the process of setting the lighting reference information includes:

[0011] The adjustable power range of the lighting device is obtained, and then the adjustable power range of the lighting device is divided into a plurality of sub-ranges, and the average theoretical heat generation value per unit hour of the lighting device in each sub-range is set.

[0012] Furthermore, the lighting module is used to record the lighting status information of the lighting device, and the content that needs to be recorded includes: the change in lighting power of the lighting device during a single lighting process, the continuous lighting time corresponding to the lighting power, and the rated operating temperature range of the lighting device.

[0013] Furthermore, the data acquisition module is used to obtain the working environment temperature and the temperature of the lighting device itself, including:

[0014] Marking the state of the lighting device when it is not working as the initial state, and obtaining the self temperature of the lighting device in the initial state; obtaining the self temperature of the lighting device in real time;

[0015] The lighting area corresponding to the lighting device is obtained, and the lighting area is marked, and the ambient temperature of the lighting area where the lighting device is located is obtained.

[0016] Furthermore, the processing process of the data processing module includes: obtaining the adjustable power range of the lighting device and the corresponding sub-intervals, and forming a mapping association between the brightness range corresponding to each sub-interval and the average theoretical heat production value per unit hour; generating a lighting power change coordinate diagram with time as the horizontal axis and lighting power as the vertical axis; setting a safe operating interval according to the adjustable power range of the lighting device on the vertical axis, and dividing the safe operating interval according to sub-areas within the safe operating interval; generating a lighting power change curve in the lighting power change coordinate diagram based on the lighting power of the lighting device obtained in real time by the data acquisition module, and marking the parts of the lighting power change curve within different sub-areas respectively; setting a low temperature threshold and a high temperature threshold, and comparing the ambient temperature of the lighting area where the lighting device is located with the low temperature threshold and the high temperature threshold respectively.

[0017] Furthermore, the process of analyzing the lighting status of the lighting device by the data analysis module specifically includes: when the lighting area of ​​the lighting device is a low-temperature environment, a neutral environment, and a high-temperature environment, the lighting device's own temperature is compared with the low-temperature temperature threshold and the high-temperature temperature threshold respectively, and different lighting adjustment instructions are generated according to the comparison results.

[0018] Furthermore, the process of adjusting the lighting device by the lighting adjustment module includes: receiving the lighting adjustment instruction, and preheating or dissipating the heat of the lighting device itself according to the lighting adjustment instruction, and then adjusting the working power of the lighting device according to the conditions of different environments.

[0019] Furthermore, the lighting adjustment instructions include a first-level temperature increase adjustment instruction, a second-level temperature increase instruction, a third-level temperature increase instruction, a first-level temperature reduction adjustment instruction, a second-level temperature reduction adjustment instruction, and a third-level temperature reduction adjustment instruction.

[0020] Compared with the prior art, the beneficial effects of the present invention are: by adjusting the standard library to set the adjustable power range of the lighting device and the average theoretical heat production value in different power ranges, then obtaining the temperature of the lighting device itself and the ambient temperature through the data acquisition module, processing the data obtained by the data acquisition module through the data processing module, and then determining the state and environment of the lighting device itself, and combining the temperature of the lighting device itself with the ambient temperature through the data analysis module, so as to analyze the lighting device in different ambient temperatures, and more reasonably select the working power of the lighting device, so that the heat generated by the lighting device at different powers is harmonized with the ambient temperature, so that the lighting device is always within the appropriate temperature parameter range, reducing the impact of excessively high or low temperatures on the performance of the lighting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the present invention. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] like Figure 1 As shown, a high-power semiconductor lighting device control system includes a control center, an adjustment standard library, a lighting module, a data acquisition module, a data processing module, a data analysis module and a lighting adjustment module;

[0024] The adjustment standard library is used to set the lighting reference information of the lighting device, and the specific process includes:

[0025] Obtain an adjustable power range of the lighting device, and mark the adjustable power range as [GL1, GL2], then divide the adjustable power range of the lighting device into a sub-ranges, and arrange each sub-range from low to high according to power size;

[0026] According to each sub-interval, a corresponding brightness range is set, and the brightness when the lighting device power is GL1 and GL2 is marked as LD1 and LD2 respectively;

[0027] Set the average theoretical heat output value per unit hour of the lighting device in each sub-area, and mark the average theoretical heat output value per unit hour of the lighting device in each sub-area as RL i , i=1,2,……,a;

[0028] The lighting module is used to record the lighting status information of the lighting device, and the content that needs to be recorded includes: the change of the lighting power of the lighting device during a single lighting process, the continuous lighting time CT corresponding to the lighting power, and the rated operating temperature range [W1, W2] of the lighting device, 0<W1<W2; it should be further explained that in the specific implementation process, the lighting module will record the lighting status at the moment the lighting device is working. At the same time, when the lighting device stops working, it will continue to work for a period of time until the lighting device returns to its initial state; each lighting device corresponds to a corresponding lighting area, and each lighting device includes warm lighting, neutral lighting and cool lighting, and when the lighting device is started, the default is neutral lighting.

[0029] The data acquisition module is used to obtain the working environment temperature and the temperature of the lighting device itself. The specific process includes:

[0030] The state of the lighting device when it is not working is marked as the initial state, and the temperature of the lighting device in the initial state is marked as CST;

[0031] Obtain the temperature of the lighting device in real time and mark the temperature as ST;

[0032] Acquire the ambient temperature of the lighting area where the lighting device is located, and mark the ambient temperature of the lighting area where the lighting device is located as HWT;

[0033] Obtain the lighting area corresponding to the lighting device and mark the lighting area.

[0034] The data acquisition module interacts with the lighting module to read the lighting status information of the lighting device recorded by the lighting module. When the lighting device stops working, the duration of the lighting device stopping working is obtained, and the duration of the lighting device stopping working is marked as CXT;

[0035] The data acquired by the data acquisition module is sent to the data processing module, and the state of the lighting device is processed by the data processing module. The specific processing process includes:

[0036] Obtaining the adjustable power range of the lighting device and the corresponding sub-ranges, and mapping the brightness range corresponding to each sub-range to the average theoretical heat production value per hour;

[0037] The time when the lighting device starts working is recorded as the initial time t0, and a lighting power change coordinate diagram is generated with time as the horizontal axis and lighting power as the vertical axis;

[0038] The vertical axis is set to a safe operation range according to the adjustable power range of the lighting device, and within the safe operation range, the safe operation range is divided into sub-areas;

[0039] The lighting power of the lighting device acquired in real time by the data acquisition module generates a lighting power change curve in the lighting power change coordinate diagram, and the parts of the lighting power change curve within different sub-areas are marked respectively;

[0040] The heat value generated by the lighting device in each marked range is obtained according to the average theoretical heat production value per unit hour corresponding to each sub-area, and the generated heat values ​​are summarized to obtain the total heat value, which is displayed in real time in the lighting power change coordinate diagram as the lighting device continues to work;

[0041] A low temperature threshold and a high temperature threshold are set, and the ambient temperature HWT of the lighting area where the lighting device is located is compared with the low temperature threshold W1 and the high temperature threshold W2 respectively. When the ambient temperature HWT is less than the low temperature threshold, it indicates that the lighting area is a low temperature environment. When the ambient temperature HWT is higher than the high temperature threshold, it indicates that the lighting area is a high temperature environment.

[0042] It should be further explained that, in a specific implementation process, after the lighting state of the lighting device is processed, the processing result is sent to the data analysis module;

[0043] The lighting state of the lighting device is analyzed by the data analysis module to obtain the analysis result of the lighting device, and then the analysis result is sent to the lighting adjustment module. The lighting adjustment module adjusts the lighting state of the lighting device according to the analysis result of the data analysis module;

[0044] The process of analyzing the lighting state of the lighting device by the data analysis module specifically includes:

[0045] When the lighting area of ​​the lighting device is a low temperature environment, that is, HWT<W1, the temperature ST of the lighting device itself and the ambient temperature HWT of the lighting area are obtained. When ST<W1, the lighting device is working at a temperature lower than the minimum rated working temperature. When the lighting device is working in this environment for a long time, it is easy to damage the performance of the lighting device. In this case, a first-level temperature increase adjustment instruction is sent to the lighting adjustment module; when W2≥ST≥W1, it means that the ambient temperature corresponding to the lighting area of ​​the lighting device is lower than the minimum rated working temperature, but the temperature of the lighting device itself is within the normal range, and the lighting device works normally; when ST>W2, it means that the temperature of the lighting device itself is higher than the maximum rated working temperature, and a first-level temperature reduction adjustment instruction is sent to the lighting adjustment module;

[0046] When the lighting area of ​​the lighting device is a neutral environment, that is, W1≤HWT≤W2, when ST<W1, the temperature of the lighting device itself is lower than the minimum rated working temperature, and a secondary temperature increase adjustment instruction is sent to the lighting adjustment module; when W1≤ST≤W2, but the temperature of the lighting device itself is within the normal range, the lighting device works normally; when ST>W2, it means that the temperature of the lighting device itself is higher than the maximum rated working temperature, and a secondary temperature reduction adjustment instruction is sent to the lighting adjustment module;

[0047] When the lighting area of ​​the lighting device is a high temperature environment, that is, HWT>W2, when ST<W1, the temperature of the lighting device itself is lower than the minimum rated working temperature, then a three-level temperature increase adjustment instruction is sent to the lighting adjustment module; when W1≤ST≤W2, but the temperature of the lighting device itself is within the normal range, then the lighting device works normally; when ST>W2, it means that the temperature of the lighting device itself is higher than the maximum rated working temperature, then a three-level temperature reduction adjustment instruction is sent to the lighting adjustment module;

[0048] The lighting adjustment module is used to adjust the lighting device accordingly according to the instructions generated by the data analysis module, specifically including:

[0049] When the first level temperature rise adjustment instruction, the second level temperature rise instruction and the third level temperature rise instruction are received, the lighting device itself is preheated, and after the temperature of the lighting device itself is heated to W1, the lighting device is started;

[0050] When the first level temperature reduction regulation instruction, the second level temperature reduction regulation instruction and the third level temperature reduction regulation instruction are received, the lighting device itself is cooled, and after the temperature of the lighting device itself is reduced to W2, the lighting device is started;

[0051] When the condition RL is met i *t iWhen *α*(HWT / W1)*k>1, the power range of the lighting device that meets the conditions is selected, that is, the selected power range is the working power range of the lighting device in a low temperature environment; where k is the thermal diffusivity of air and α is the heat loss entropy, α=e HWT-W1 ; e is a natural constant;

[0052] When the condition RL is met i *t i When *α*(HWT-W1) / (W2-HWT)*k>1, the power range of the lighting device that meets the condition is selected, that is, the selected power range is the working power range of the lighting device in a neutral environment;

[0053] When the condition RL is met i *t i When *α*(HWT / W2)*k≤1, the power range of the lighting device that meets the condition is selected, that is, the selected power range is the working power range of the lighting device in a high temperature environment.

[0054] It should be further explained that, in the specific implementation process, the lighting device can adjust the light color of the lighting device according to different usage scenarios, that is, the lighting device can be adjusted to warm lighting, neutral lighting and cool lighting according to needs.

[0055] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A high-power semiconductor lighting device control system, comprising a control center, characterized in that: The control center is connected with an adjustment standard library and a data acquisition module; the adjustment standard library is used to set the lighting reference information of the lighting device, and the lighting reference information includes the adjustable power range of the lighting device and the average theoretical heat production value in different power ranges; The data acquisition module is used to obtain the working environment temperature and the temperature of the lighting device itself, and send the obtained data to the data processing module; The data acquired by the data acquisition module is processed by the data processing module to judge the temperature of the lighting device itself and the ambient temperature in the lighting area, and then the processing result is sent to the data analysis module; The lighting state of the lighting device is analyzed by the data analysis module to obtain the analysis result of the lighting device, and the corresponding lighting adjustment instruction is generated according to the analysis result, and then the adjustment instruction is sent to the lighting adjustment module; The lighting adjustment module adjusts the working power of the lighting device accordingly according to the lighting adjustment instruction; The specific process of generating corresponding lighting adjustment instructions based on the analysis results includes: Set a low temperature threshold W1, a high temperature threshold W2, the temperature ST of the lighting device itself, and the ambient temperature HWT; When HWT<W1, when ST<W1, a first-level temperature increase adjustment instruction is sent to the lighting adjustment module; when W2≥ST≥W1, the lighting device works normally; when ST>W2, a first-level temperature decrease adjustment instruction is sent to the lighting adjustment module; When W1≤HWT≤W2, when ST<W1, a secondary temperature increase regulation instruction is sent to the lighting regulation module; when W1≤ST≤W2, the lighting device works normally; when ST>W2, a secondary temperature decrease regulation instruction is sent to the lighting regulation module; When HWT>W2, when ST<W1, a three-level temperature increase adjustment instruction is sent to the lighting adjustment module; when W1≤ST≤W2, the lighting device works normally; when ST>W2, a three-level temperature decrease adjustment instruction is sent to the lighting adjustment module.

2. A high-power semiconductor lighting device control system according to claim 1, characterized in that: The process of setting up lighting reference information includes: The adjustable power range of the lighting device is obtained, and then the adjustable power range of the lighting device is divided into a plurality of sub-ranges, and the average theoretical heat generation value per unit hour of the lighting device in each sub-range is set.

3. A high-power semiconductor lighting device control system according to claim 1, characterized in that: The data acquisition module interacts with the lighting module, and the lighting module is used to record the lighting status information of the lighting device. The content that needs to be recorded includes: the change of the lighting power of the lighting device during a single lighting process, the continuous lighting time corresponding to the lighting power, and the rated operating temperature range of the lighting device.

4. A high-power semiconductor lighting device control system according to claim 1, characterized in that: The data acquisition module is used to obtain the working environment temperature and the temperature of the lighting device itself, including: Marking the state of the lighting device when it is not working as the initial state, and obtaining the self temperature of the lighting device in the initial state; obtaining the self temperature of the lighting device in real time; The lighting area corresponding to the lighting device is obtained, and the lighting area is marked, and the ambient temperature of the lighting area where the lighting device is located is obtained.

5. A high-power semiconductor lighting device control system according to claim 4, characterized in that: The processing process of the data processing module includes: obtaining the adjustable power range of the lighting device and the corresponding sub-ranges, and forming a mapping association between the brightness range corresponding to each sub-range and the average theoretical heat production value per unit hour; generating a lighting power change coordinate diagram with time as the horizontal axis and lighting power as the vertical axis; setting the safe operating range on the vertical axis according to the adjustable power range of the lighting device, and dividing the safe operating range according to sub-areas within the safe operating range; generating a lighting power change curve in the lighting power change coordinate diagram based on the lighting power of the lighting device obtained in real time by the data acquisition module, and marking the parts of the lighting power change curve located in different sub-areas respectively.

6. A high-power semiconductor lighting device control system according to claim 1, characterized in that: The process of the lighting adjustment module adjusting the lighting device includes: receiving the lighting adjustment instruction, and preheating or cooling the lighting device itself according to the lighting adjustment instruction, and then adjusting the working power of the lighting device according to the conditions of different environments.

7. A high-power semiconductor lighting device control system according to claim 1, characterized in that: When a first-level temperature increase regulation instruction, a second-level temperature increase instruction, and a third-level temperature increase instruction are received, the lighting device itself is preheated, and after the temperature of the lighting device itself is heated to a low temperature threshold, the lighting device is started; When a first-level temperature reduction regulation instruction, a second-level temperature reduction regulation instruction, and a third-level temperature reduction regulation instruction are received, the lighting device itself is cooled, and after the temperature of the lighting device itself is reduced to a high temperature threshold, the lighting device is started.

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