A control method, system, medical device and storage medium for intense pulsed light

Abstract

The present invention relates to the field of intense pulsed light technology, and in particular to an intense pulsed light control method, system, medical device and storage medium, including a xenon lamp, an acquisition module, a judgment module and a discharge module, wherein the acquisition module is used to detect the real-time discharge voltage, real-time discharge current, initial reference voltage and internal resistance curve of the xenon lamp; and the judgment module is used to determine the predicted output power of the xenon lamp and the corresponding calibration voltage and calibration current. The present invention does not directly use the initial reference voltage corresponding to the driving analog signal to control the discharge of the xenon lamp according to the curve relationship between the internal resistance, voltage and current of the xenon lamp, but adjusts the xenon lamp current according to the target output power and the internal resistance curve, so that the adjusted predicted output power and the target output power are almost the same, that is, the power applied to both ends of the xenon lamp is constant, so that the intense pulsed light generated by the xenon lamp can maintain a stable output, thereby solving the problem of poor stability of the intense pulsed light output.

Description

Technical Field

[0001] The present invention relates to the technical field of intense pulsed light, and in particular to an intense pulsed light control method, system, medical equipment and storage medium. Background Art

[0002] Intense pulsed light is a broad-spectrum light formed by focusing and filtering a very high-intensity light source. Its essence is an incoherent ordinary light rather than a laser. Intense pulsed light is usually emitted by a strong light source (such as a xenon lamp) and focused by a condenser, and then formed after preliminary filtration by the system. Its wavelength is mostly 500 to 1200 nm.

[0003] Intense pulsed light can be used for beauty or treatment of skin diseases. Its theoretical basis is the principle of selective photothermal effect. Intense pulsed light energy is preferentially and selectively absorbed by target color groups such as oxygenated hemoglobin or melanin in blood vessels, and converted into heat energy to increase the temperature in tissues, thereby achieving the treatment purpose.

[0004] When using intense pulsed light for beauty or treatment of skin diseases, the output stability of the intense pulsed light is positively correlated with the treatment effect. However, in the process of realizing the present invention, the applicant found that due to the characteristics of the light source itself, the output stability of the intense pulsed light generated in the prior art needs to be improved. Summary of the invention

[0005] The purpose of this application is to provide a control method, system, medical device and storage medium for intense pulsed light, which mainly includes the following four aspects:

[0006] In a first aspect, the present application provides a control method for intense pulsed light, which is applied to a xenon lamp. The intense pulsed light is generated by the xenon lamp. The control method comprises the following steps:

[0007] Step S100, obtaining a curve relationship between the internal resistance, voltage and current of the xenon lamp, recorded as an internal resistance curve;

[0008] Obtaining the initial reference voltage V2 of the xenon lamp;

[0009] Obtain the real-time discharge voltage V1 and the real-time discharge current I1 of the xenon lamp;

[0010] Step S200, based on the real-time discharge voltage V1 and the real-time discharge current I1, determine the target output power P of the xenon lamp m ;

[0011] Step S300, based on the initial reference voltage V2, the internal resistance curve and the target output power P m , simulate and adjust the current loaded to the xenon lamp, so that the predicted output power P of the xenon lamp after adjustment n and control target output power P m The difference is within the preset value;

[0012] Step S400, controlling the xenon lamp to predict the output power P n The corresponding calibration current I2 ′ performs discharge control.

[0013] Furthermore, in step S100, an initial reference voltage V2 is determined by a driving analog signal, wherein the driving analog signal is obtained based on digital signal conversion.

[0014] Further, the digital signal is a pre-stored digital signal or a received digital signal;

[0015] And / or, convert the digital signal into a driving analog signal through a DAC module.

[0016] Further, in step S100, the real-time discharge voltage V1 and the real-time discharge current I1 of the xenon lamp are detected by the ADC module;

[0017] And / or, in step S400, based on the driving analog signal, the operating pulse width and / or pulse interval of the xenon lamp is determined.

[0018] Further, in step S300, based on the initial reference voltage V2 and the internal resistance curve, an initial current I2 and an initial resistance R2 corresponding to the initial reference voltage V2 are determined in the internal resistance curve, and then the predicted output power P is determined based on the initial current I2 and the initial resistance R2. n , determine the predicted output power P n and the target output power P m When the difference is greater than the preset value, the current loaded to the xenon lamp is simulated and adjusted to obtain the adjusted current. The adjustment resistance corresponding to the adjusted current is determined in the internal resistance curve. The predicted output power P is calculated again based on the adjusted current and the adjusted resistance. n , determine the predicted output power P n and the target output power P m Is the difference between them greater than the preset value until the predicted output power P n and the target output power P m The difference is less than or equal to the preset value.

[0019] A second aspect of the present application provides a system for controlling intense pulsed light, comprising:

[0020] A xenon lamp, wherein the xenon lamp is used to generate intense pulsed light;

[0021] An acquisition module, the acquisition module is used to detect the real-time discharge voltage V1, the real-time discharge current I1, the initial reference voltage V2 and the internal resistance curve of the xenon lamp;

[0022] A judgment module is used to determine the target output power P of the xenon lamp based on the real-time discharge voltage V1 and the real-time discharge current I1. m The judgment module is also used to determine the predicted output power P of the xenon lamp based on the initial reference voltage V2, the adjustment voltage, the target output power P and the internal resistance curve. n and the corresponding calibration voltage V2′ and calibration current I2′;

[0023] The discharge module is used to control the xenon lamp to predict the output power P n The corresponding calibration current I2 ′ performs discharge control.

[0024] Furthermore, the system also includes a human-computer interaction module and a control module, and the human-computer interaction module, the acquisition module, and the xenon lamp are respectively connected to the control module.

[0025] Furthermore, the system is used to implement the above-mentioned control method.

[0026] A third aspect of the present application provides a medical device, including a memory and a processor, wherein the memory and the processor are communicatively connected to each other, computer instructions are stored in the memory, and the processor executes the above-mentioned control method by executing the computer instructions.

[0027] A fourth aspect of the present application provides a computer-readable storage medium, on which a number of classification programs are stored, and the number of classification programs are used to be called by a processor and execute the control method as described above.

[0028] Compared with the prior art, the present invention has at least the following technical effects:

[0029] According to the curve relationship between the internal resistance, voltage and current of the xenon lamp, the present invention does not directly use the initial reference voltage V2 corresponding to the driving analog signal to control the discharge of the xenon lamp, but uses the initial reference voltage, target output power P m and internal resistance curve, adjust the xenon lamp current, and let the predicted output power P after adjustment n and the target output power P m The power applied to both ends of the xenon lamp is almost the same, that is, the power applied to both ends of the xenon lamp is constant, so that the intense pulsed light generated by the xenon lamp can maintain a stable output, thereby solving the problem of poor stability of the intense pulsed light output. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments of the present invention or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 is a flow chart of the detection method of the present invention;

[0032] Figure 2 It is a schematic diagram of module connection of the system of the present invention;

[0033] Figure 3 is a relationship diagram between voltage and current of the xenon lamp of the present invention;

[0034] Figure 4 This is a pulse light waveform diagram of the first set of tests on the ratio;

[0035] Figure 5 is a pulse light waveform diagram of the first group of tests performed by the control method of Example 1 of the present invention;

[0036] Figure 6 is a pulse light waveform diagram of the second set of tests for the comparison ratio;

[0037] Figure 7 is a pulse light waveform diagram of the second group of tests performed by the control method of Example 1 of the present invention;

[0038] Figure 8 This is a pulse light waveform diagram of the third set of tests on the ratio;

[0039] Fig. 9 is a pulse light waveform diagram of the third group of tests performed by the control method of Example 1 of the present invention;

[0040] Fig.10 This is a pulse light waveform diagram of the fourth set of tests on the ratio;

[0041] Fig.11 is a pulse light waveform diagram of the fourth group of tests performed by the control method of Example 1 of the present invention;

[0042] Fig.12 This is a pulse light waveform diagram of the fifth set of tests on the scale;

[0043] Fig.13 is a pulse light waveform diagram of the fifth group of tests performed by the control method of Example 1 of the present invention;

[0044] In the figure,

[0045] 10. Xenon lamp; 20. Control module; 30. Acquisition module; 40. Judgment module; 50. Discharge module; 60. Human-computer interaction module. DETAILED DESCRIPTION

[0046] The following description provides many different embodiments or examples for implementing different features of the present invention. The components and arrangements described in the following specific examples are only used to simplify the present invention and are only used as examples, not to limit the present invention.

[0047] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not 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.

[0048] A xenon lamp is a high-pressure gas discharge lamp, and its main filling gas is xenon. The working principle of a xenon lamp is to excite electrons by heating xenon gas, so that the bulb emits strong, white light. Specifically, through a transformer, a 12V power supply is raised to a high-voltage pulse voltage of more than 20,000 volts in an instant, activating the xenon gas in the xenon bulb to produce a strong light with a color temperature of 6000K to 10000K in the arc, and the color is crystal white with a slight purple-blue. When using a xenon lamp to generate intense pulsed light, the output stability of the intense pulsed light is related to its waveform. Since the internal resistance of the xenon lamp has a certain curve relationship with the voltage and current, the waveform of the intense pulsed light is affected by the voltage and current at both ends of the xenon lamp, making the waveform of the intense pulsed light generated by the xenon lamp unstable, and there will be a trend of rising or falling, resulting in poor output stability of the intense pulsed light generated by the xenon lamp. In order to solve the problem of poor output stability of the intense pulsed light generated by the xenon lamp, the present application provides a control method, system, medical equipment and storage medium that can control the xenon lamp to achieve stable output of intense pulsed light under a constant power state, and the specific structure is as shown in the following embodiments.

[0049] Example 1

[0050] The present application embodiment provides a control method for intense pulsed light, which is applied to a xenon lamp. The intense pulsed light is generated by a xenon lamp, such as Figure 1 As shown, the control method comprises the following steps:

[0051] Step S100, obtaining the curve relationship between the internal resistance, voltage and current of the xenon lamp, which is recorded as the internal resistance curve; the curve relationship between the internal resistance, voltage and current of the xenon lamp can be obtained from the product manual of the xenon lamp, such as Figure 3 As shown;

[0052] Acquire a driving analog signal of the xenon lamp, wherein the driving analog signal includes an initial reference voltage V2 of the xenon lamp; the driving analog signal of the xenon lamp is determined by a control instruction received by a control module, and after the control module receives the control instruction, it outputs a digital signal according to the control instruction, and the digital signal is converted to obtain a driving analog signal;

[0053] Obtain the real-time discharge voltage V1 and the real-time discharge current I1 of the xenon lamp;

[0054] Step S200, determining the target output power P of the xenon lamp based on the real-time discharge voltage V1 and the real-time discharge current I1,

[0055] ;

[0056] Step S300, based on the initial reference voltage V2 and the internal resistance curve, determine the initial current I2 and the initial resistance R2 corresponding to the initial reference voltage V2 in the internal resistance curve, and then determine the predicted output power P based on the initial current I2 and the initial resistance R2. n ,

[0057] ;

[0058] Determine the predicted output power P n The difference between the target output power P and the target output power P is calculated. When the difference is greater than the preset value, based on the value of the initial reference voltage V2, the current loaded to both ends of the xenon lamp is simulated and adjusted (recorded as the adjustment current). The adjustment resistance corresponding to the adjustment current is determined in the internal resistance curve. The predicted output power P is calculated again based on the adjustment current and the adjustment resistance. n , determine the predicted output power P n and the target output power P m Is the difference between them greater than the preset value? If the difference is greater than the preset value, the adjustment current loaded to both ends of the xenon lamp is adjusted again to obtain a new predicted output power P n , until the predicted output power P n and the target output power P m The difference between them is less than or equal to the preset value. At this time, the predicted output power P nThe corresponding adjustment voltage is the calibration voltage V2′, and the corresponding adjustment current is the calibration current I2′; during the discharge process, the system capacitor voltage changes with time, and the resistance of the xenon lamp will change accordingly. In order to ensure that the power at the first moment (real time) is the same as that at the second moment, for the second moment, since the system capacitor voltage at the second moment changes compared with the first moment (real time), without changing the system capacitor voltage at the second moment, the current loaded to both ends of the xenon lamp is adjusted based on the numerical simulation of the initial reference voltage V2, so that the corresponding resistance changes at the same time, and the corresponding predicted output power is calculated, and the difference between the predicted output power and the target output power is controlled within a preset value, so that the working output power of the xenon lamp at the second moment is basically the same as that at the first moment;

[0059] Step S400, controlling the xenon lamp to predict the output power P n The corresponding calibration current I2 ′ performs discharge control.

[0060] According to the curve relationship between the internal resistance, voltage and current of the xenon lamp, the discharge control of the xenon lamp is not directly carried out using the initial reference voltage V2 corresponding to the driving analog signal, but according to the target output power P m and internal resistance curve, adjust the output value of the initial reference voltage, and let the adjusted predicted output power P n and the target output power P m The power applied to both ends of the xenon lamp is constant, so that the intense pulsed light generated by the xenon lamp can maintain a stable output, thereby solving the problem of changes in the internal resistance of the xenon lamp caused by changes in voltage and current, which further causes the waveform of the intense pulsed light to have an upward or downward trend, resulting in poor stability of the intense pulsed light output.

[0061] Specifically, the digital signal is a pre-stored digital signal or a received digital signal.

[0062] In some embodiments, the digital signal may be converted into a driving analog signal by a DAC module.

[0063] In some embodiments, in step S100 , the real-time discharge voltage V1 and the real-time discharge current I1 of the xenon lamp may be detected by an ADC module.

[0064] In some embodiments, in step S400, the operating pulse width and / or pulse interval of the xenon lamp may be determined based on the driving analog signal.

[0065] In some embodiments, the preset value can be set to 0, and correspondingly, the xenon lamp can achieve constant power output to generate intense pulsed light, thereby ensuring the stability of the intense pulsed light output.

[0066] In some embodiments, the preset value may be set to 0.001% to 1% of the target output power Pm Correspondingly, the xenon lamp can achieve an almost constant power output to produce intense pulsed light, ensuring the stability of the intense pulsed light output.

[0067] Example 2

[0068] The present application embodiment provides a system for controlling intense pulsed light, such as Figure 2 As shown, including:

[0069] A xenon lamp 10, wherein the xenon lamp 10 is used to generate intense pulsed light;

[0070] An acquisition module 30, the acquisition module 30 is used to detect the real-time discharge voltage V1, the real-time discharge current I1, the initial reference voltage V2 and the internal resistance curve of the xenon lamp 10;

[0071] The judgment module 40 is used to determine the target output power P of the xenon lamp 10 based on the real-time discharge voltage V1 and the real-time discharge current I1. m The judgment module 40 is also used to determine the predicted output power P of the xenon lamp 10 based on the initial reference voltage V2, the adjustment voltage, the target output power P and the internal resistance curve. n and the corresponding calibration voltage V2′ and calibration current I2′;

[0072] The discharge module 50 is used to control the discharge of the xenon lamp 10 to predict the output power P n The corresponding calibration voltage V2 ′ and calibration current I2 ′ are used for discharge control.

[0073] Based on the initial reference voltage V2 and the internal resistance curve, the initial current I2 and the initial resistance R2 corresponding to the initial reference voltage V2 are determined in the internal resistance curve, and then the predicted output power P is determined based on the initial current I2 and the initial resistance R2. n ,

[0074] ;

[0075] Determine the predicted output power P n The difference between the target output power P and the target output power P is calculated. When the difference is greater than the preset value, based on the value of the initial reference voltage V2, the current loaded to both ends of the xenon lamp is simulated and adjusted (recorded as the adjustment current). The adjustment resistance corresponding to the adjustment current is determined in the internal resistance curve. The predicted output power P is calculated again based on the adjustment current and the adjustment resistance. n , determine the predicted output power P n and the target output power P m Is the difference between them greater than the preset value? If the difference is greater than the preset value, the current is changed again to obtain a new predicted output power P. n , until the predicted output power Pn and the target output power P m The difference between them is less than or equal to the preset value. At this time, the predicted output power P n The corresponding adjustment voltage is the calibration voltage V2′, and the corresponding adjustment current is the calibration current I2′; then the discharge module 50 is controlled to discharge the xenon lamp 10 to predict the output power P n The corresponding calibration current I2 ′ performs discharge control.

[0076] To facilitate the control of the system, the system can be set to also include a human-computer interaction module 60 and a control module 20. The human-computer interaction module 60, the acquisition module 30, and the xenon lamp 10 are respectively connected to the control module 20, and the control instructions can be input and / or the working status of the system can be read through the human-computer interaction module 30.

[0077] It should be noted that the human-computer interaction module 60 is a prior art, and may specifically be a control button, a touch screen, a mobile communication terminal, a PC, etc., and is not specifically limited here.

[0078] In some embodiments, the system further includes a DAC module, which is connected to the control module 20 and is used to convert a digital signal into a driving analog signal.

[0079] In some embodiments, the system is used to execute the control method in Example 1.

[0080] Example 3

[0081] An embodiment of the present application provides a medical device, including a memory and a processor, wherein the memory and the processor are communicatively connected to each other, computer instructions are stored in the memory, and the processor executes the control method in Example 1 by executing the computer instructions.

[0082] Example 4

[0083] An embodiment of the present application provides a computer-readable storage medium, on which a number of classification programs are stored. The number of classification programs are used to be called by a processor and execute the control method in Example 1.

[0084] Test example

[0085] Based on the control method of Example 1, a pulse light waveform control test was performed on a xenon lamp. At the same time, different from Example 1, a pulse light waveform control test was performed on a xenon lamp using a constant current output as a comparative example. The two pulse light waveform control tests were performed five times for comparison. During the test, the pulse width of the intense pulse light was controlled to be 10ms. The initial parameters used in the five comparison tests are shown in Table 1.

[0086] Table 1 Output power control test parameters of xenon lamp used to generate intense pulsed light

[0087] .

[0088] Test results such as Figure 4~Figure 13 As shown, from the five test result diagrams of the comparative example ( Figure 4 , Figure 6 , Figure 8 , Fig.10 and Fig.12 ) It can be seen that even if a constant current is used to control the xenon lamp to output intense pulsed light, the resistance of the xenon lamp will change, causing the actual output power to fluctuate, and the greater the output power of the xenon lamp, the more obvious the fluctuation of the pulse light waveform; while in the control method of sampling Example 1 of the present application, the xenon lamp is controlled to output intense pulsed light. The current actually output to the xenon lamp is adjusted to adapt to the resistance change of the xenon lamp, and finally the xenon lamp is allowed to output pulsed light at a constant power, suppressing the fluctuation of the pulse light waveform, thereby improving the stability of the xenon lamp outputting intense pulsed light.

[0089] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A control method for intense pulsed light, applied to a xenon lamp, characterized in that: The intense pulsed light is generated by a xenon lamp, and the control method comprises the following steps: Step S100, obtaining a curve relationship between the internal resistance, voltage and current of the xenon lamp, recorded as an internal resistance curve; Obtaining the initial reference voltage V2 of the xenon lamp; Obtain the real-time discharge voltage V1 and the real-time discharge current I1 of the xenon lamp; Step S200, based on the real-time discharge voltage V1 and the real-time discharge current I1, determine the target output power P of the xenon lamp m ; Step S300, based on the initial reference voltage V2, the internal resistance curve and the target output power P m , simulate and adjust the current loaded to the xenon lamp, so that the predicted output power P of the xenon lamp after adjustment n and control target output power P m The difference is within the preset value; Step S400, controlling the xenon lamp to predict the output power P n The corresponding calibration current I2 ′ performs discharge control.

2. The control method according to claim 1, characterized in that: In step S100 , an initial reference voltage V2 is determined by a driving analog signal, where the driving analog signal is obtained based on digital signal conversion.

3. The control method according to claim 2, characterized in that: The digital signal is a pre-stored digital signal or a received digital signal; And / or, convert the digital signal into a driving analog signal through a DAC module.

4. The control method according to any one of claims 1 to 3, characterized in that: In step S100, the real-time discharge voltage V1 and the real-time discharge current I1 of the xenon lamp are detected by the ADC module; And / or, in step S400, based on the driving analog signal, the operating pulse width and / or pulse interval of the xenon lamp is determined.

5. The control method according to any one of claims 1 to 3, characterized in that: In step S300, based on the initial reference voltage V2 and the internal resistance curve, the initial current I2 and the initial resistance R2 corresponding to the initial reference voltage V2 are determined in the internal resistance curve, and then the predicted output power P is determined based on the initial current I2 and the initial resistance R2. n , determine the predicted output power P n and the target output power P m When the difference is greater than the preset value, the current loaded to the xenon lamp is simulated and adjusted to obtain the adjusted current. The adjustment resistance corresponding to the adjusted current is determined in the internal resistance curve. The predicted output power P is calculated again based on the adjusted current and the adjusted resistance. n , determine the predicted output power P n and the target output power P m Is the difference between them greater than the preset value until the predicted output power P n and the target output power P m The difference is less than or equal to the preset value.

6. A system for controlling intense pulsed light, characterized in that: include: A xenon lamp, wherein the xenon lamp is used to generate intense pulsed light; An acquisition module, the acquisition module is used to detect the real-time discharge voltage V1, the real-time discharge current I1, the initial reference voltage V2 and the internal resistance curve of the xenon lamp; A judgment module is used to determine the target output power P of the xenon lamp based on the real-time discharge voltage V1 and the real-time discharge current I1. m The judgment module is also used to determine the predicted output power P of the xenon lamp based on the initial reference voltage V2, the adjustment voltage, the target output power P and the internal resistance curve. n and the corresponding calibration current I2′; The discharge module is used to control the xenon lamp to predict the output power P n The corresponding calibration current I2 ′ performs discharge control.

7. The system according to claim 6, characterized in that The system also includes a human-computer interaction module and a control module. The human-computer interaction module, the acquisition module, and the xenon lamp are respectively connected to the control module.

8. The system according to claim 6, characterized in that The system is used to implement the control method described in any one of claims 2 to 5.

9. A medical device, characterized in that: The invention comprises a memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the control method according to any one of claims 1 to 5 by executing the computer instructions.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a plurality of classification programs, and the plurality of classification programs are used to be called by a processor and execute the control method as described in any one of claims 1 to 5.

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