Endoscope cold light source light emission control method and system based on temperature and use time

Abstract

The application discloses a temperature and use time based endoscope cold light source light emitting control method and system, relates to the medical optical instrument technical field, and the method comprises the following steps: acquiring the current temperature and the cumulative use time of each LED lamp in real time, adopting the pre-stored temperature compensation relationship and aging compensation relationship of the LED lamp itself, calculating the temperature compensation coefficient and the decay compensation coefficient of each LED lamp; the two coefficients are multiplied to obtain the final compensation coefficient for adjusting the driving current of the LED lamp itself, and finally adjust the output current of the driving circuit. The application adjusts the lamp driving current based on the calculated temperature compensation coefficient and aging compensation coefficient, solves the problem of color drift of the synthesized light caused by the inconsistency of the temperature characteristics and the aging rate of the multi-spectrum LED lamp, ensures the stability of the output light color of the endoscope cold light source, and thus guarantees the accuracy of medical diagnosis.

Description

Technical Field

[0001] This application relates to the field of medical optical instrument technology, and in particular to an endoscope cold light source emission control method and system based on temperature and usage time. Background Technology

[0002] Endoscopic cold light sources are the core lighting components of medical endoscope systems. They are typically composed of multiple LED lights and are used to provide high-intensity, high-color-rendering illumination for endoscopic surgery. Compared with traditional light sources, LED cold light sources have significant advantages such as soft light, low heat generation, and no radiation. They can effectively reduce thermal damage and phototoxicity to biological tissues, thereby improving the safety of surgery and patient comfort.

[0003] However, in actual clinical applications, it has been found that the color stability of the output light from such LED-based cold light sources is easily affected by ambient temperature and usage time. Specifically, the optical characteristics of LED lamps exhibit significant temperature dependence, such as... Figure 1 As shown, the relative spectra at different temperatures reveal that as the temperature increases (20℃→70℃), the relative spectrum of the LED reflects a decrease in brightness and a deviation in light color. Secondly, LED lights inevitably experience aging during long-term use, such as... Figure 2 As shown, the relative light output of an LED gradually decreases with increasing operating time, and the decay accelerates significantly in the later stages. Furthermore, the semiconductor materials inside the LED chip undergo physicochemical changes such as electron migration and material oxidation due to continuous power supply, resulting in a gradual decrease in luminous brightness.

[0004] In endoscope cold light sources, the LEDs used to synthesize light in multiple different spectral bands often have inconsistent temperature characteristics and aging rates. This leads to different degrees of luminous intensity decay or spectral shift in each LED, ultimately causing unpredictable color drift in the synthesized light output. This color instability directly affects the accurate reproduction of tissue color in endoscopic imaging, interferes with doctors' judgment of the color characteristics of lesions, and poses a risk to diagnostic accuracy.

[0005] Existing technologies lack effective control methods to overcome the influence of temperature and time factors and ensure the stability of the color of the output light from the endoscope's cold light source. Summary of the Invention

[0006] The purpose of this application is to provide a method and system for controlling the emission of an endoscopic cold light source based on temperature and usage time. By monitoring the temperature and cumulative usage time of each LED in real time, the driving current of each LED is adjusted based on the calculated temperature compensation coefficient and aging compensation coefficient. This solves the problem of color drift of synthesized light caused by the inconsistency between the temperature characteristics and aging rate of multispectral LEDs, ensuring the stability of the output light color of the endoscopic cold light source, thereby ensuring the accuracy of medical diagnosis.

[0007] To achieve the above objectives, this application provides the following solution:

[0008] In a first aspect, this application provides an endoscope cold light source emission control method based on temperature and usage time. The cold light source includes an LED lamp module composed of multiple LEDs of different wavelengths, an LED driver module, and a controller. Each LED is equipped with a lamp temperature sensor and a driver circuit. The method is executed by the controller and includes: acquiring the current temperature and cumulative usage time of each LED in real time; calculating the temperature compensation coefficient of each LED based on its current temperature using a pre-stored temperature compensation relationship; calculating the attenuation compensation coefficient of each LED based on its cumulative usage time using a pre-stored aging compensation relationship; multiplying the temperature compensation coefficient and the attenuation compensation coefficient of the LED to obtain a final compensation coefficient for adjusting the driving current of the LED; and adjusting the output current of the driving circuit corresponding to each LED according to the final compensation coefficient of each LED.

[0009] Optionally, the method further includes: determining whether the synthesized output light of the LED module has experienced color shift based on the temperature and the cumulative usage time; if color shift is determined to have occurred, then calculating the temperature compensation coefficient and the attenuation compensation coefficient; wherein, determining whether the synthesized output light of the LED module has experienced color shift specifically includes: comparing the current temperature and the cumulative usage time of each LED with a preset temperature threshold and a preset time threshold, respectively; if the current temperature of any LED exceeds the temperature threshold and / or the cumulative usage time exceeds the time threshold, then color shift is determined to have occurred.

[0010] Optionally, the formula for calculating the temperature compensation coefficient is: Wherein, k is the temperature compensation coefficient, T is the current temperature, and a is the pre-stored temperature compensation parameter that is related to the temperature compensation of the LED lamp itself; wherein, the temperature compensation parameter a is a constant obtained by performing pre-calibration tests on each LED lamp in the LED lamp module and fitting the exponential function relationship between the LED lamp light radiation energy and the temperature change.

[0011] Optionally, the formula for calculating the attenuation compensation coefficient is: ,in, The attenuation compensation coefficient is t, the cumulative usage time is t, and m and n are the pre-stored aging compensation parameters that are related to the aging compensation of the LED lamp itself. The aging compensation parameters m and n are constants obtained by performing pre-calibration tests on each LED lamp in the LED lamp module and fitting a linear function relationship between the light radiation energy of the LED lamp and the cumulative usage time.

[0012] Optionally, adjusting the output current of the driving circuit corresponding to each LED lamp according to the final compensation coefficient of each LED lamp specifically involves multiplying the final driving compensation coefficient by the initial driving current value of the LED lamp to obtain the output current of the driving circuit of the LED lamp.

[0013] Optionally, after adjusting the output current of the driving circuit corresponding to each LED lamp according to the final compensation coefficient of each LED lamp, the proportional relationship between the driving currents of the multi-channel LED lamps of different bands is consistent with a preset reference proportional relationship.

[0014] Secondly, this application provides an endoscope cold light source emission control system based on temperature and usage time, comprising: a data acquisition unit configured to acquire the current temperature and cumulative usage time of each LED in real time; a judgment unit configured to determine whether the synthesized output light of the LED module has undergone color drift based on the temperature and the cumulative usage time; a compensation calculation unit configured to calculate the temperature compensation coefficient of each LED based on its current temperature and using a pre-stored temperature compensation relationship with the LED itself; calculate the attenuation compensation coefficient of each LED based on its cumulative usage time and using a pre-stored aging compensation relationship with the LED itself; multiply the temperature compensation coefficient and the attenuation compensation coefficient of the LED itself to obtain a final compensation coefficient for adjusting the driving current of the LED itself; and a drive control unit configured to adjust the control signal of the output current of the driving circuit corresponding to each LED according to the final compensation coefficient of each LED.

[0015] Thirdly, this application provides an endoscope cold light source, comprising: an LED lamp module, including: multiple LEDs of different wavelengths, an optical combining component, multiple temperature sensors, and multiple driving circuits; wherein, the optical combining component is used to combine light of different spectral bands emitted by multiple LEDs into a composite light beam and output it; the multiple temperature sensors are configured one-to-one with the multiple LEDs to detect the current temperature of the corresponding LED; the multiple driving circuits are configured one-to-one with the multiple LEDs to provide driving current to the corresponding LEDs; an LED driving module is electrically connected to the LED lamp module and is used to provide independent driving current to the multiple LEDs; a heat dissipation device is used to dissipate heat from the LED lamp module; a memory is used to store temperature compensation parameters, aging compensation parameters, and cumulative usage time of each LED; and a controller is connected to the multiple temperature sensors, the memory, and the multiple driving circuits respectively, and is configured to execute the method described in any of the above embodiments.

[0016] Fourthly, this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method described in any of the preceding claims.

[0017] According to the specific embodiments provided in this application, the following technical effects are disclosed:

[0018] This application provides a method and system for controlling the emission of an endoscopic cold light source based on temperature and usage time. It monitors the temperature and cumulative usage time of each LED in real time, using this as a trigger for precise compensation calculations. Then, for each LED in the LED module, based on its unique temperature and aging characteristics, a final compensation coefficient is obtained. This compensation calculation ensures a comprehensive assessment of the spectral contribution changes of all LEDs due to temperature and aging. Finally, the calculated final compensation coefficient is used to adjust the driving current of the corresponding LED. Temperature compensation reduces the impact of temperature on the LED chip semiconductor material, mitigating aging phenomena such as electron migration and oxidation, indirectly extending the lifespan of the LED and the overall cold light source. Therefore, by adjusting the driving current of each LED using temperature and aging compensation coefficients, the output light color remains consistently stable, ensuring the accurate representation of the color of lesions. This is crucial for doctors to make pathological diagnoses based on the color of lesions. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram illustrating the significant temperature dependence of the optical characteristics of LED lamps in the background art of this application;

[0021] Figure 2 This is a schematic diagram illustrating the gradual decrease in relative light output of an LED lamp as the operating time increases, as described in the background art of this application.

[0022] Figure 3 This is a schematic diagram of the functional modules of the endoscope cold light source provided in Embodiment 1 of this application;

[0023] Figure 4 A schematic flowchart illustrating an endoscope cold light source emission control method based on temperature and usage time, provided in Embodiment 2 of this application;

[0024] Figure 5 This is a schematic diagram of the functional modules of an endoscope cold light source emission control system based on temperature and usage time, provided in Embodiment 4 of this application. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Example 1

[0028] This embodiment provides a cold light source for an endoscope. For example... Figure 3 The diagram shown is a functional module diagram of the endoscope cold light source in this embodiment. The endoscope cold light source includes: LED lamp module 1, LED driver module 2, heat dissipation device 3, memory 4, and controller 5.

[0029] LED module 1 includes: multiple LEDs of different wavelengths, an optical synthesis component, multiple temperature sensors, and multiple driving circuits. Specifically, the multiple LEDs of different wavelengths can be respectively... Figure 1 The multiple temperature sensors, 1a, 1c, 1e, and 1g, can respectively provide... Figure 1 1b, 1d, 1f, 1h; the optical synthesis component can be... Figure 1 The light combining plates 1i and 1j are used in the LEDs. Light combining plate 1i combines three LEDs 2c, 2e, and 2g into a beam of light, which is then combined with light combining plate 1j and 1a to form a beam of light containing four different spectral bands. The beam is then output through a 2k lens. Multiple driving circuits are set up one-to-one with multiple LEDs, and the multiple driving circuits are controlled by LED driving module 2.

[0030] LED driver module 2 is electrically connected to LED lamp module 1 and is used to provide independent drive current for multiple LEDs.

[0031] The heat dissipation device 3 may specifically be a cooling fan; the heat dissipation device 3 is connected to the controller 5 and operates under the control of the controller 5, and is used to dissipate heat from the LED lamp module 1 and the LED driver module 2.

[0032] The memory 4 is used to store the temperature compensation parameters, aging compensation parameters, and cumulative usage time of each LED.

[0033] The controller 5 is communicatively connected to the LED driver module 2 and the memory 4, respectively.

[0034] The cooling fan 5 is connected to the controller 3 and operates under the control of the controller 3 to dissipate heat from the LED lamp module 1 and the LED driver module 2.

[0035] Example 2

[0036] This second embodiment provides a method for controlling the emission of endoscopic cold light sources based on temperature and usage time. The aim is to ensure that the output light color of the endoscopic cold light source remains stable during endoscopic surgery or examination, thereby providing doctors with reliable visual diagnostic information.

[0037] like Figure 4 As shown, an endoscopic cold light source emission control method based on temperature and usage time is described. This method is executed by a controller and specifically includes:

[0038] S101, obtain the initial drive current value.

[0039] In practice, after the cold light source is started, the controller can read the initial drive current values ​​(such as I1, I2, I3, I4) of each LED (such as 1a, 1c, 1e, 1g) after startup. The LED driver module drives the LED module to light up according to the initial drive current value to provide illumination.

[0040] S102, real-time acquisition of the current temperature and cumulative usage time of each LED.

[0041] In practice, the current temperature of each LED (e.g., T1, T2, T3, T4) is periodically obtained by using temperature sensors (e.g., 1b, 1d, 1f, 1h) that correspond one-to-one with each LED in the LED module.

[0042] In practice, the cumulative usage time of each LED light (e.g., t1, t2, t3, t4) is read and updated.

[0043] S103, based on the current temperature of each LED, calculate the temperature compensation coefficient of each LED using a pre-stored temperature compensation relationship with the LED itself.

[0044] In practical implementation, the temperature compensation coefficient calculation requires calculating a temperature compensation coefficient for each LED. Specifically, for each LED, based on its current temperature T, the pre-stored temperature compensation parameter 'a' uniquely corresponding to that LED is retrieved, and the temperature compensation coefficient 'k' for that LED is calculated according to the temperature compensation relationship. The formula for calculating the temperature compensation coefficient 'k' is as follows: .

[0045] For example, for LED lamp 1a, its temperature compensation coefficient is For LED lamp 1c, its temperature compensation coefficient is: And so on, 1e corresponds to 1g corresponds to Furthermore, the driving currents of each LED after temperature compensation are as follows: , , , ,in, , 2. , These are the initial drive current values ​​for each LED.

[0046] Among them, the temperature compensation parameters a1, a2, a3, and a4 are constants obtained by performing pre-calibration tests on each LED during the production stage, fitting the exponential function relationship between its light radiation energy and temperature, and pre-burning them into the memory.

[0047] S104. Based on the cumulative usage time of each LED, the attenuation compensation coefficient of each LED is calculated using a pre-stored aging compensation relationship with the LED itself.

[0048] In practical implementation, the calculation of the compensation coefficient requires calculating the attenuation compensation coefficient for each LED. Specifically, for each LED, based on its cumulative usage time t, the aging compensation parameters m and n, which are uniquely associated with that LED and are pre-stored in memory, are called, and the aging compensation coefficient for that LED is calculated according to the aging compensation relationship. Aging compensation coefficient The calculation formula is: .

[0049] For example, for LED lamp 1a, its aging compensation coefficient is: For LED lamp 1c, its temperature compensation coefficient is: And so on, 1e corresponds to 1g corresponds to .

[0050] Among them, the aging compensation parameters m1, m2, m3, m4 and , , , It is a constant obtained by performing pre-calibration tests on each LED during the production stage, fitting the linear function relationship of the light radiation energy of the LED with the cumulative usage time, and pre-burning it into the memory.

[0051] S105, multiply the LED's own temperature compensation coefficient and attenuation compensation coefficient to obtain the final compensation coefficient used to adjust the LED's own drive current.

[0052] In practical implementation, for example, the final compensation coefficient for LED lamp 1a is: The final compensation coefficient for LED lamp 1c is: ; and so on, 1e corresponds to 1g corresponds to .

[0053] S106, adjust the output current of the driving circuit corresponding to each LED according to the final compensation coefficient of each LED.

[0054] In practice, for each LED, the calculated final compensation coefficient is multiplied by the initial drive current value of that LED by I to obtain the output current of the drive circuit at that moment.

[0055] For example, if the initial drive current values ​​of the four LEDs 1a, 1c, 1e, and 1g are I1, I2, I3, and I4 respectively, then the output current after temperature compensation and attenuation compensation is... ,in, , , , .

[0056] Furthermore, since the compensation coefficient calculation is performed independently for each LED lamp to calculate its own attenuation and temperature effects, and is compensated by multiplying it by its own initial drive current value, the design goal and mathematical result of this algorithm is to ensure that after compensation, the ratio of drive current I1'':I2'':I3'':I4'' can be maintained at the same preset ratio of I1:I2:I3:I4 as before compensation.

[0057] Furthermore, after adjusting the output current of each LED lamp following temperature and attenuation compensation, the process returns to step S102 to continue real-time monitoring of temperature and cumulative usage time, forming a closed-loop control of monitoring-judgment-compensation-adjustment. This process runs continuously during the cold light source's operation until the endoscope's cold light source equipment is turned off, ensuring long-term stability of the output light color throughout its service life.

[0058] By implementing steps S101 to S106, specifically steps S101 and S105, the temperature and cumulative usage time of each LED can be monitored synchronously in real time. For each LED in the LED module, based on its unique temperature and aging characteristics, a final compensation coefficient is obtained. This compensation calculation ensures a comprehensive assessment of the spectral contribution changes that may occur to all LEDs due to temperature and aging. Then, in step S106, the calculated final compensation coefficient is applied to adjust the driving current of the corresponding LED. After compensation, the stability of the cold light source output color is guaranteed, and temperature compensation reduces the impact of temperature on the LED chip semiconductor material, mitigating aging phenomena such as electron migration and oxidation, indirectly extending the lifespan of the LED and the overall cold light source. Furthermore, since the driving current ratio of each LED is maintained at a high degree of consistency with the initial setting ratio, the spectral composition and color characteristics of the synthesized output light are maintained stably. This specifically addresses the color drift problem caused by temperature changes and LED aging, ensuring the continuous stability of the output light color and guaranteeing the accurate representation of the color of the lesion. This is crucial for doctors to make pathological diagnoses based on the color of the lesion.

[0059] Example 3

[0060] This third embodiment provides a method for controlling the emission of a cold light source in an endoscope based on temperature and usage time. The difference between this third embodiment and the second embodiment is that a color drift judgment step (S001) is added after step S102 and before step S103 in the second embodiment. This step is specifically as follows:

[0061] S001, based on temperature and cumulative usage time, determine whether the synthesized output light of the LED lamp module has experienced color shift.

[0062] In practice, the current temperature T of each LED is compared with a preset temperature threshold, and the cumulative usage time t of each LED is also compared with a preset time threshold.

[0063] If the current temperature T of all LEDs does not exceed the preset temperature threshold and their cumulative usage time t does not exceed the preset time threshold, then it is determined that the LED does not need to be compensated at present, and its current driving current remains unchanged.

[0064] If the current temperature T of any LED exceeds a preset temperature threshold and / or its cumulative usage time t exceeds a preset time threshold, then it is determined that a compensation coefficient needs to be calculated. The compensation coefficient calculation is performed by executing steps S103 to S106 in the above embodiment 2.

[0065] This embodiment adds an independent, pre-set color drift judgment step (S001), enabling the system to first evaluate the state of the LED lights and only trigger subsequent complex compensation coefficient calculations when it is absolutely necessary (i.e., any LED light exceeds the threshold). This improves the intelligence level of the system's control response while ensuring color stability.

[0066] Example 4

[0067] This embodiment provides an endoscope cold light source emission control system based on temperature and usage time, such as... Figure 5 As shown, the system includes:

[0068] The data acquisition unit 201 is configured to acquire the current temperature and cumulative usage time of each LED.

[0069] The judgment unit 202 is configured to determine, based on the temperature and the cumulative usage time, whether the synthesized output light of the LED lamp module has undergone color shift.

[0070] The compensation calculation unit 203 is configured to calculate the temperature compensation coefficient of each LED based on its current temperature and using a pre-stored temperature compensation relationship with the LED itself; calculate the attenuation compensation coefficient of each LED based on its cumulative usage time and using a pre-stored aging compensation relationship with the LED itself; and multiply the temperature compensation coefficient and the attenuation compensation coefficient of the LED itself to obtain the final compensation coefficient used to adjust the driving current of the LED itself.

[0071] The drive control unit 204 is configured to adjust the control signal of the output current of the drive circuit corresponding to each LED lamp according to the final compensation coefficient of each LED lamp.

[0072] Example 5

[0073] This embodiment provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps in the above-described method embodiments.

[0074] Example 6

[0075] This embodiment provides a computer program product, including a computer program that, when executed by a processor, implements the steps in the above-described method embodiments.

[0076] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments of the above methods. Furthermore, any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory.

[0077] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0078] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A method for controlling the emission of a cold light source for endoscopes based on temperature and usage time, wherein the cold light source comprises an LED lamp module consisting of multiple LEDs of different wavelengths, an LED driver module, and a controller, characterized in that, Each LED light is equipped with a temperature sensor and a driver circuit. The method is executed by the controller and includes: Real-time acquisition of the current temperature and cumulative usage time of each LED light; Based on the current temperature of each LED, a temperature compensation coefficient for each LED is calculated using a pre-stored temperature compensation relationship with the LED itself; the formula for calculating the temperature compensation coefficient is as follows: Wherein, k is the temperature compensation coefficient, T is the current temperature, and a is the pre-stored temperature compensation parameter that is related to the temperature compensation of the LED lamp itself; wherein, the temperature compensation parameter a is a constant obtained by performing pre-calibration tests on each LED lamp in the LED lamp module and fitting the exponential function relationship between the LED lamp light radiation energy and the temperature change. Based on the cumulative usage time of each LED, and using a pre-stored aging compensation relationship with the LED itself, the attenuation compensation coefficient for each LED is calculated; the formula for calculating the attenuation compensation coefficient is as follows: ,in, The attenuation compensation coefficient is t, the cumulative usage time is t, and m and n are the pre-stored aging compensation parameters that are related to the aging compensation of the LED lamp itself. The aging compensation parameters m and n are constants obtained by performing pre-calibration tests on each LED lamp in the LED lamp module and fitting a linear function relationship between the light radiation energy of the LED lamp and the cumulative usage time. Multiply the temperature compensation coefficient and the attenuation compensation coefficient of the LED itself to obtain the final compensation coefficient used to adjust the driving current of the LED itself. Based on the final compensation coefficient of each LED, adjust the output current of the corresponding drive circuit of each LED. The proportional relationship between the driving currents of the multi-channel LEDs in different frequency bands is consistent with a preset reference proportional relationship.

2. The endoscopic cold light source emission control method based on temperature and usage time according to claim 1, characterized in that, The method further includes: Based on the temperature and the cumulative usage time, it is determined whether the synthesized output light of the LED lamp module has undergone color shift; If color shift is determined to have occurred, the temperature compensation coefficient and the attenuation compensation coefficient are calculated; wherein, The determination of whether the synthesized output light of the LED module has undergone color shift specifically includes: The current temperature and cumulative usage time of each LED are compared with preset temperature thresholds and preset time thresholds, respectively. If the current temperature of any LED exceeds the temperature threshold and / or the cumulative usage time exceeds the time threshold, then color drift is determined to have occurred.

3. The endoscopic cold light source emission control method based on temperature and usage time according to claim 1, characterized in that, The step of adjusting the output current of the driving circuit corresponding to each LED lamp according to the final compensation coefficient is as follows: The final compensation coefficient is multiplied by the initial drive current value of the LED to obtain the output current of the LED drive circuit.

4. The endoscopic cold light source emission control method based on temperature and usage time according to claim 1, characterized in that, The multi-channel LED lights with different wavelengths include LED lights with four different spectral wavelengths.

5. A temperature- and usage-time-based endoscopic cold light source emission control system, wherein the cold light source comprises an LED lamp module consisting of multiple LEDs of different wavelengths, an LED driver module, and a controller, characterized in that, Each LED light is equipped with a temperature sensor and a driving circuit. The system includes: The data acquisition unit is configured to acquire the current temperature and cumulative usage time of each LED in real time; The judgment unit is configured to determine, based on the temperature and the cumulative usage time, whether the synthesized output light of the LED lamp module has undergone color shift. The compensation calculation unit is configured to calculate the temperature compensation coefficient for each LED based on its current temperature and using a pre-stored temperature compensation relationship with the LED itself; the formula for calculating the temperature compensation coefficient is as follows: Where k is the temperature compensation coefficient, T is the current temperature, and a is the pre-stored temperature compensation parameter related to the temperature compensation of the LED itself; wherein, the temperature compensation parameter a is a constant obtained by performing pre-calibration tests on each LED in the LED module and fitting the exponential function relationship between the LED light radiation energy and temperature; based on the cumulative usage time of each LED, the attenuation compensation coefficient of each LED is calculated using the pre-stored aging compensation relationship related to the LED itself; the formula for calculating the attenuation compensation coefficient is: ,in, Here, t is the cumulative usage time, and m and n are the pre-stored aging compensation parameters that are related to the aging compensation of the LED itself. The aging compensation parameters m and n are constants obtained by performing pre-calibration tests on each LED in the LED module and fitting a linear function relationship between the light radiation energy of the LED and the cumulative usage time. The final compensation coefficient for adjusting the driving current of the LED is obtained by multiplying the temperature compensation coefficient and the attenuation compensation coefficient of the LED itself. The drive control unit is configured to adjust the control signal of the output current of the drive circuit corresponding to each LED lamp according to the final compensation coefficient of each LED lamp; the proportional relationship between the drive currents of multiple LED lamps in different bands is consistent with a preset reference proportional relationship.

6. An endoscope cold light source, characterized in that, include: An LED light module includes: multiple LEDs of different wavelengths, an optical combining component, multiple temperature sensors, and multiple driving circuits; wherein, the optical combining component is used to combine light of different spectral bands emitted by multiple LEDs into a single beam of composite light and output it; the multiple temperature sensors are configured one-to-one with the multiple LEDs to detect the current temperature of the corresponding LED; the multiple driving circuits are configured one-to-one with the multiple LEDs to provide driving current to the corresponding LEDs; The LED driver module is electrically connected to the LED lamp module and is used to provide independent drive current for multiple LEDs. A heat dissipation device is used to dissipate heat from the LED lamp module; The memory is used to store the temperature compensation parameters, aging compensation parameters, and cumulative usage time of each LED. The controller is connected to the plurality of temperature sensors, the memory, and the plurality of drive circuits, respectively, and is configured to perform the method as described in any one of claims 1 to 4.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the method of any one of claims 1-4.

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