Power control system and method for handheld semiconductor laser therapeutic instrument

Abstract

The invention provides a handheld semiconductor laser therapeutic instrument power control system and method, and relates to the technical field of electronics, and the system comprises a light path assembly, a laser assembly, and a circuit control system. Wherein one end of the light path assembly is arranged inside the laser assembly, the other end of the light path assembly is arranged outside the laser assembly, and the laser assembly is electrically connected with the circuit control system; the laser assembly is used for generating laser and collecting working state information of the laser assembly in the laser generating process. The circuit control system is used for detecting whether the laser assembly has a fault according to the working state information and adjusting laser generated by the laser assembly according to the working state information under the condition of determining that the laser assembly does not have the fault; the light path assembly is used for guiding out laser generated by the laser assembly. According to the invention, the power change of the laser caused by factors such as ambient temperature, attenuation and power supply can be effectively solved, and the safety of the laser can be improved.

Description

Technical Field

[0001] The present invention relates to the field of electronic technology, and in particular, to a power control system and method for a handheld semiconductor laser therapeutic apparatus. Background Art

[0002] The handheld semiconductor laser therapeutic apparatus has the characteristics of being portable, easy to move, high efficiency, low surgical pain, and less bleeding, and is very suitable for use in various dental clinics and hospitals.

[0003] Traditional semiconductor laser power control is usually open-loop control or uses current feedback control. Open-loop control usually causes unstable output power due to changes in environmental temperature, humidity, and laser attenuation, etc. At the same time, power supply fluctuations will also affect the output power. Current feedback control can solve some problems that affect power such as power supply fluctuations, but due to the temperature characteristics of semiconductors, the output power will decrease with the same current when the temperature rises. In addition, since the laser is a power device, long-term use will also cause power attenuation, and the phenomenon is that the output power will decrease with the same current after attenuation. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a power control system and method for a handheld semiconductor laser therapeutic apparatus, which can effectively solve the power changes caused by factors such as environmental temperature, attenuation, and power supply of the laser, and at the same time help to improve the safety of the laser.

[0005] In a first aspect, an embodiment of the present invention provides a power control system for a handheld semiconductor laser therapeutic apparatus, including: an optical path component, a laser component, and a circuit control system; wherein, one end of the optical path component is deployed inside the laser component, and the other end is deployed outside the laser component, and the laser component is electrically connected to the circuit control system;

[0006] The laser component is used to generate laser, and collect its own working state information during the process of generating laser, and the working state information includes current value, optical power value, and laser temperature value;

[0007] The circuit control system is used to detect whether there is a fault in the laser component according to the working state information, and adjust the laser generated by the laser component according to the working state information when it is determined that the laser component has no fault;

[0008] The optical path component is used to export the laser generated by the laser component.

[0009] In an implementation manner, the laser component includes a laser chip, a light detection structure, and a temperature detection structure;

[0010] The laser chip is used to receive an excitation current to generate laser according to the excitation current;

[0011] The optical detection structure is used to collect the optical power value during the process of generating laser by the laser chip;

[0012] The temperature detection structure is used to collect the laser temperature value during the process of generating laser by the laser chip.

[0013] In one implementation, the circuit control system is specifically configured to:

[0014] Detect whether there is a fault in the laser component according to the current value and the optical power value. When it is determined that there is no fault in the laser component, determine the current output power of the laser component according to the current value, the optical power value and the laser temperature value;

[0015] Based on the current output power of the laser component, determine the target output power of the laser component and generate a control signal corresponding to the target output power;

[0016] Output an excitation current to the laser component according to the control signal.

[0017] In one implementation, the circuit control system is specifically configured to:

[0018] If the current value is less than a specified multiple of the calibrated current value and the optical power value is less than a specified multiple of the calibrated optical power value, it is determined that there is no fault in the laser component.

[0019] In one implementation, the circuit control system is specifically configured to:

[0020] Determine the first output power of the laser component corresponding to the optical power value, the second output power of the laser component corresponding to the current value, and the temperature coefficient corresponding to the laser temperature value;

[0021] Fuse the first output power, the second output power and the temperature coefficient to obtain the current output power of the laser component.

[0022] In one implementation, the circuit control system is specifically configured to:

[0023] Determine the sum of the output powers between the current output power of the laser component at the initial moment and the current output power of the laser component at the current moment;

[0024] And determine the difference between the current output power of the laser component at the previous moment and the current output power of the laser component at the current moment;

[0025] Use the PID control coefficient to fuse the current output power, the sum of the output powers and the difference of the output powers of the laser component at the current moment to obtain the target output power of the laser component.

[0026] In one embodiment, it further includes a heat sink electrically connected to the laser component, which is used to provide heat dissipation function during the process of the laser component generating laser light.

[0027] In a second aspect, the present invention further provides a method for controlling the power of a handheld semiconductor laser therapeutic apparatus. This method is applied to the circuit control system in the power control system of the handheld semiconductor laser therapeutic apparatus provided in the first aspect. The method includes:

[0028] Obtain the working state information of the laser component during the process of generating laser light. The working state information includes current value, optical power value, and laser temperature value;

[0029] Detect whether there is a fault in the laser component according to the working state information;

[0030] In the case of determining that there is no fault in the laser component, adjust the laser light generated by the laser component according to the working state information, so as to export the laser light generated by the laser component through the optical path component.

[0031] In one embodiment, detecting whether there is a fault in the laser component according to the working state information includes:

[0032] If the current value is less than a specified multiple of the calibrated current value and the optical power value is less than a specified multiple of the calibrated optical power value, it is determined that there is no fault in the laser component.

[0033] In one embodiment, adjusting the laser light generated by the laser component according to the working state information includes:

[0034] In the case of determining that there is no fault in the laser component, determine the current output power of the laser component according to the current value, optical power value, and laser temperature value;

[0035] Based on the current output power of the laser component, determine the target output power of the laser component and generate a control signal corresponding to the target output power;

[0036] Output an excitation current to the laser component according to the control signal.

[0037] A power control system and method for a handheld semiconductor laser therapeutic apparatus provided by the present invention include: an optical path component, a laser component, and a circuit control system; wherein, one end of the optical path component is deployed inside the laser component, and the other end is deployed outside the laser component, and the laser component is electrically connected to the circuit control system; the laser component is used to generate laser light and collect its own working state information during the process of generating laser light, and the working state information includes current value, optical power value, and laser temperature value; the circuit control system is used to detect whether the laser component has a fault according to the working state information, and adjust the laser light generated by the laser component according to the working state information when it is determined that the laser component has no fault; the optical path component is used to export the laser light generated by the laser component. The above system controls the output power of the laser component by using three parameters, namely current value, optical power value, and laser temperature value, at the same time. Since the attenuation of the optical power value is much smaller than that of the laser, and the laser temperature value can compensate for the influence of temperature on power, this system can effectively solve the power change of the laser caused by factors such as ambient temperature, attenuation, and power supply. At the same time, working state information such as current value and optical power value can also be used for single fault detection, and the laser output can be turned off in time when the laser component fails to prevent harm, which helps to improve the safety of the laser.

[0038] Other features and advantages of the present invention will be described in the following specification, and, in part, will be obvious from the specification, or will be understood by implementing the present invention. The objectives and other advantages of the present invention are achieved and obtained by the structures specifically pointed out in the specification, claims, and drawings.

[0039] To make the above objectives, features, and advantages of the present invention more obvious and understandable, the following specifically enumerates preferred embodiments and, in conjunction with the accompanying drawings, is described in detail as follows. Brief Description of the Drawings

[0040] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0041] Figure 1 It is a schematic structural diagram of a power control system for a handheld semiconductor laser therapeutic apparatus provided by an embodiment of the present invention;

[0042] Figure 2 It is a schematic structural diagram of a laser component provided by an embodiment of the present invention;

[0043] Figure 3Schematic structural diagram of a closed-loop control system provided by an embodiment of the present invention;

[0044] Figure 4 Schematic flow diagram of a power control method for a handheld semiconductor laser therapeutic apparatus provided by an embodiment of the present invention;

[0045] Figure 5 Control process flow chart of a power control method for a handheld semiconductor laser therapeutic apparatus provided by an embodiment of the present invention.

[0046] Icons: 1 - Optical path component; 2 - Laser component; 3 - Circuit control system; 4 - Display; 5 - Battery; 6 - First housing; 7 - Second housing; 8 - Radiator. Detailed implementation manners

[0047] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0048] Currently, traditional semiconductor laser power control technologies have the problem of unstable output power of lasers. Based on this, the embodiments of the present invention provide a power control system and method for a handheld semiconductor laser therapeutic apparatus, which can effectively solve the power variations of lasers caused by factors such as ambient temperature, attenuation, and power supply, and at the same time help improve the safety of lasers.

[0049] To facilitate the understanding of this embodiment, a power control system for a handheld semiconductor laser therapeutic apparatus disclosed in the embodiments of the present invention will be introduced in detail first. The system includes: an optical path component 1, a laser component 2, and a circuit control system 3; wherein, one end of the optical path component 1 is deployed inside the laser component 2, and the other end is deployed outside the laser component 2, and the laser component 2 is electrically connected to the circuit control system 3.

[0050] In one example, the laser component 2 is used to generate laser light, and during the process of generating laser light, it collects its own working state information. The working state information includes current value, optical power value, and laser temperature value. The optical power value is also the data collected by the optical detection structure, and the optical detection structure can adopt a PD (photodiode). The laser temperature value is also the data collected by the temperature detection structure, and the temperature detection structure can adopt an NTC (Negative Temperature Coefficient) thermistor.

[0051] In one example, the circuit control system 3 is used to detect whether there is a fault in the laser component 2 according to the working state information, and adjust the laser generated by the laser component 2 according to the working state information when it is determined that there is no fault in the laser component 2. In specific implementation, it is possible to detect whether there is a fault in the laser component 2 according to the current value and the optical power value. If there is no fault, the output power of the laser component corresponding to the current value, the output power of the laser corresponding to the optical power value, and the temperature coefficient corresponding to the laser temperature value can be determined respectively. After fusing the above data, the current output power of the laser component can be obtained, and the PID control algorithm can be used to determine the target output power of the laser component, and generate a corresponding control signal to trigger the laser component to generate laser according to the target output power.

[0052] In one example, the optical path component 1 is used to export the laser generated by the laser component 2. Among them, the optical path component 1 refers to a set of complex optical components, and its main function is to guide and control the path of the laser beam. The optical path component 1 may include various optical elements, such as mirrors, lenses, prisms, gratings, filters, etc. These elements work together to ensure that the laser propagates in a preset manner.

[0053] The power control system of the handheld semiconductor laser therapeutic apparatus provided by the embodiment of the present invention controls the output power of the laser component by using three parameters: the current value, the optical power value, and the laser temperature value. Since the attenuation of the optical power value is much smaller than that of the laser, and the laser temperature value can compensate for the influence of temperature on power, this system can effectively solve the power change of the laser caused by factors such as ambient temperature, attenuation, and power supply. At the same time, the working state information such as the current value and the optical power value can also be used for single fault detection, and the laser output can be turned off in time when a fault occurs in the laser component to prevent harm, which helps to improve the safety of the laser.

[0054] For the convenience of understanding, the embodiment of the present invention provides a specific structure of a power control system of a handheld semiconductor laser therapeutic apparatus. The handheld semiconductor laser therapeutic apparatus is a medical device that emits laser with a specific wavelength through a semiconductor laser, and reaches a specified patient position through an optical system, so that the human soft tissue is vaporized to achieve the surgical treatment of certain diseases. Refer to Figure 1 the specific structure schematic diagram of a power control system of a handheld semiconductor laser therapeutic apparatus shown in the figure. The system includes: an optical path component 1, a laser component 2, a circuit control system 3, a display 4, a battery 5, a first housing 6, a second housing 7, and a radiator 8.

[0055] One end of the optical path component 1 is deployed inside the laser component 2, and the other end is deployed outside the laser component 2; the laser component 2, the circuit control system 3, and the radiator 8 are electrically connected, and the radiator 8 is used to provide heat dissipation during the process of the laser component 2 generating laser; the circuit control system 3 is also electrically connected to the display 4, and the display 4 is mainly used to display the output power of the laser component 2; the battery 5 is connected to the laser component 2, the circuit control system 3, the display 4, and the radiator 8 to provide the electrical energy required for the operation of the above devices.

[0056] The laser component 2 is the core component of the system. Its working principle is to achieve population inversion of non-equilibrium carriers between the energy bands (conduction band and valence band) of semiconductor materials or between the energy bands of semiconductor materials and the energy levels of impurities (acceptors or donors) through a certain excitation method. When a large number of electrons and holes in the population inversion state recombine, stimulated emission occurs. See Figure 2 The structure schematic diagram of a laser component shown in the figure. Inside the laser component 2, a laser chip, a light detection structure, and a temperature detection structure are integrated. Among them, the light detection structure uses a PD (photodiode), and the temperature detection structure uses an NTC resistor. Specifically, the laser chip is used to receive the excitation current to generate laser according to the excitation current, and the magnitude of the output power is positively correlated with the input excitation current; the light detection structure is used to collect the optical power value during the process of the laser chip generating laser, that is, the optical power value can feedback the magnitude of the optical power; the temperature detection structure is used to collect the laser temperature value during the process of the laser chip generating laser.

[0057] The circuit control system 3 and the laser component 2 together constitute a closed-loop control system. See Figure 3 The structure schematic diagram of a closed-loop control system shown in the figure. The circuit control system 3 includes a microcontroller (MCU, Microcontroller Unit), an ADC (Analog-to-Digital Converter) converter, and a constant current circuit.

[0058] In specific implementation, the control process is as follows:

[0059] (1) The ADC converter receives the current value, optical power value, and laser temperature value of the laser component 2, converts them into digital signals, and stores the digital signals in the memory of the microcontroller;

[0060] (2) After the data is processed and fused, the current output power of the laser component 2 is obtained. It includes: detecting whether there is a fault in the laser component 2 according to the current value and optical power value; when it is determined that there is no fault in the laser component 2, the current output power of the laser component 2 is determined according to the current value, optical power value, and laser temperature value.

[0061] In one example, the process of detecting whether there is a fault in the laser assembly 2 based on the current value and the optical power value is as follows: If the current value is less than a specified multiple of the calibrated current value and the optical power value is less than a specified multiple of the calibrated optical power value, it is determined that there is no fault in the laser assembly 2. Exemplarily, if the current value is less than 1.5 times the calibrated current value and the optical power value is less than 1.5 times the calibrated optical power value, it is determined that there is no fault; conversely, if the current value is greater than or equal to 1.5 times the calibrated current value, and / or, the optical power value is greater than or equal to 1.5 times the calibrated optical power value, it is determined that there is a fault in the laser assembly.

[0062] In one example, the process of determining the current output power of the laser assembly 2 based on the current value, the optical power value, and the laser temperature value is as follows: Determine the first output power of the laser assembly 2 corresponding to the optical power value, and determine the second output power of the laser assembly 2 corresponding to the current value, and determine the temperature coefficient corresponding to the laser temperature value; fuse the first output power, the second output power, and the temperature coefficient to obtain the current output power of the laser assembly 2.

[0063] Determine the first output power according to the following formula: P PD = k PD x PD (t) + b PD ; where P PD is the first output power, x PD (t) is the optical power value, k PD , b PD are the coefficients corresponding to the optical power value.

[0064] Determine the second output power according to the following formula: P I (t) = k I x I (t) + b I ; where P I (t) is the second output power, x I (t) is the current value, k I , b I are the coefficients corresponding to the current value.

[0065] Determine the temperature coefficient according to the following formula: where k t (t) is the temperature coefficient, P t (t) is the initial output power of the laser assembly 2, x t (t) is the laser temperature value.

[0066] Fuse the first output power, the second output power, and the temperature coefficient according to the following formula: where P(t) is the current output power.

[0067] (3) Based on the current output power of the laser component 2, the PID control algorithm in the microcontroller determines the target output power of the laser component 2, generates a control signal corresponding to the target output power, and transmits the control signal to the constant current circuit, so that the constant current circuit outputs an excitation current to the laser component 2 according to the control signal to control the laser power, forming a closed-loop control system.

[0068] The process of determining the target output power is as follows: Determine the sum of the output powers between the current output power of the laser component 2 at the initial moment and the current output power of the laser component 2 at the current moment; and, determine the difference in output power between the current output power of the laser component 2 at the previous moment and the current output power of the laser component 2 at the current moment; Use the PID control coefficients to fuse the current output power, the sum of output powers, and the difference in output powers of the laser component 2 at the current moment to obtain the target output power of the laser component 2. In specific implementation, the target output power can be determined according to the following formula:

[0069]

[0070] where, P O (t) is the target output power of the laser component 2, K p , K i , K d are the PID control coefficients, represents the sum of the output powers between the current output power P(0) of the laser component 2 at the initial moment 0 and the current output power P(t) of the laser component 2 at the current moment t, and [P(t) - P(t - 1)] represents the difference in output power between the current output power P(t - 1) of the laser component 2 at the previous moment t - 1 and the current output power P(t) of the laser component 2 at the current moment t.

[0071] In specific implementation, before the system leaves the factory, it is first calibrated. The optical power values (PD values), laser temperature values (NTC values), and current values corresponding to different ambient temperatures and different powers are collected using a laser power meter and stored in the internal memory of the MCU. During operation, the optical power values (PD values), laser temperature values (NTC values), and current values are collected in real time. After average filtering, the output powers P PD , P I (t) corresponding to the optical power values (PD values) and current values are obtained by looking up a table, and the temperature coefficient k t (t) corresponding to the laser temperature value (NTC value) is obtained. The output powers P PD , P I (t) are averaged and then added to the temperature coefficient k t(t) The output power after output fusion (i.e., the current output power P(t)), and at this time, the accurate target output power P is obtained by using the PID control algorithm. O (t). The optical power value (PD value) and current value collected while looking up the table will be compared with the data in the table. If the error value of either the optical power value (PD value) or the current value exceeds ±50%, it is regarded as a failure at this time, and the laser output is immediately turned off.

[0072] In the embodiment of the present invention, three methods of current, PD (photodiode), and temperature compensation are used to control the output power of the laser at the same time. Since the attenuation of PD is much smaller than that of the laser, temperature compensation can make up for the influence of temperature on power. Therefore, this method can effectively solve the power change of the laser caused by factors such as ambient temperature, attenuation, and power supply. At the same time, multi-input control (PD and current) can also be used for single-fault detection, turn off the laser output in time, and prevent hazards from occurring. In summary, the core of the embodiment of the present invention is that: through multi-sensor fusion control, accurate and stable power output can be ensured; through fault detection, it helps to ensure the safety of the handheld semiconductor laser therapeutic apparatus during use; and it helps to increase the system redundancy.

[0073] Based on the foregoing embodiment, the embodiment of the present invention provides a power control method for a handheld semiconductor laser therapeutic apparatus, and this method is applied to the circuit control system in the power control system of the handheld semiconductor laser therapeutic apparatus provided in the foregoing embodiment. Refer to Figure 4 the flow schematic diagram of a power control method for a handheld semiconductor laser therapeutic apparatus shown, including the following steps S402 to step S406:

[0074] Step S402, obtain the working state information of the laser component during the laser generation process, and the working state information includes the current value, the optical power value, and the laser temperature value.

[0075] Step S404, detect whether there is a fault in the laser component according to the working state information.

[0076] In specific implementation, when the current value is less than a specified multiple of the calibrated current value and the optical power value is less than a specified multiple of the calibrated optical power value, it is determined that there is no fault in the laser component.

[0077] Step S406, when it is determined that there is no fault in the laser component, adjust the laser generated by the laser component according to the working state information, so as to export the laser generated by the laser component through the optical path component.

[0078] In specific implementation, first, when it is determined that the laser component has no fault, the current output power of the laser component is determined according to the current value, the optical power value, and the laser temperature value; then, based on the current output power of the laser component, the target output power of the laser component is determined, and a control signal corresponding to the target output power is generated; finally, an excitation current is output to the laser component according to the control signal.

[0079] Among them, the step of determining the current output power of the laser component according to the current value, the optical power value, and the laser temperature value includes: determining the first output power of the laser component corresponding to the optical power value, determining the second output power of the laser component corresponding to the current value, and determining the temperature coefficient corresponding to the laser temperature value; fusing the first output power, the second output power, and the temperature coefficient to obtain the current output power of the laser component.

[0080] Among them, the step of determining the target output power of the laser component based on the current output power of the laser component includes: determining the sum of output powers between the current output power of the laser component at the initial moment and the current output power of the laser component at the current moment; and determining the difference in output power between the current output power of the laser component at the previous moment and the current output power of the laser component at the current moment; using the PID control coefficient to fuse the current output power, the sum of output powers, and the difference in output powers of the laser component at the current moment to obtain the target output power of the laser component.

[0081] The power control method of the handheld semiconductor laser therapeutic apparatus provided by the embodiment of the present invention controls the output power of the laser component by using three parameters, namely, the current value, the optical power value, and the laser temperature value, at the same time. Since the attenuation of the optical power value is much smaller than that of the laser, and the laser temperature value can compensate for the influence of temperature on power, this system can effectively solve the power change caused by factors such as ambient temperature, attenuation, and power supply of the laser. At the same time, the working state information such as the current value and the optical power value can also be used for single-fault detection, and the laser output can be turned off in time when the laser component fails to prevent harm, which helps to improve the safety of the laser.

[0082] For easy understanding, the embodiment of the present invention provides a Figure 5 control process flow chart of a power control method of a handheld semiconductor laser therapeutic apparatus as shown in

[0083] Step 1, collect the current value, PD value, and NTC value of the laser;

[0084] Step 2, perform average value filtering on the current value, PD value, and NTC value;

[0085] Step 3, calculate the positions of the current value, PD value, and NTC value in the table;

[0086] Step 4, determine whether the current value is less than 1.5 times the calibrated current value. If not, turn off the laser output. If so, execute Step 6;

[0087] Step 5, determine whether the PD value is less than 1.5 times the calibrated PD value. If not, turn off the laser output. If so, execute Step 6;

[0088] Step 6, determine the output power based on the current value, optical power value, and laser temperature value;

[0089] Step 7, perform PID control on the laser output according to the output power, and return to Step 1.

[0090] This method controls the laser output power through multi-sensor fusion, which can effectively reduce the instability of the laser output power caused by environmental temperature, laser attenuation, power supply fluctuations, and other external interferences. At the same time, it also has fault detection to protect the safety of users.

[0091] Those skilled in the art can clearly understand that for the convenience and conciseness of description, the specific working process of the power control method of the handheld semiconductor laser therapeutic apparatus described above can refer to the corresponding process in the foregoing embodiments, and will not be repeated here.

[0092] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0093] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0094] Finally, it should be noted that the above-described embodiments are only specific embodiments of the present invention, used to illustrate the technical solutions of the present invention, rather than limiting it. The protection scope of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that any technician familiar with the technical field of the present invention can still modify the technical solutions described in the foregoing embodiments, or can easily think of changes, or perform equivalent replacements on some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A power control system for a handheld semiconductor laser therapeutic apparatus, characterized in that: include: An optical path component, a laser component and a circuit control system; wherein one end of the optical path component is disposed inside the laser component, and the other end is disposed outside the laser component, and the laser component is electrically connected to the circuit control system; The laser assembly is used to generate laser light and collect its own working state information during the process of generating laser light, wherein the working state information includes current value, optical power value and laser temperature value; The circuit control system is used to detect whether the laser component has a fault according to the working status information, and adjust the laser generated by the laser component according to the working status information when it is determined that the laser component does not have a fault; The optical path component is used to guide out the laser light generated by the laser component.

2. The power control system of the handheld semiconductor laser therapeutic apparatus according to claim 1, characterized in that: The laser assembly includes a laser chip, a light detection structure and a temperature detection structure; The laser chip is used to receive an excitation current to generate laser light according to the excitation current; The optical detection structure is used to collect the optical power value during the process of the laser chip generating laser light; The temperature detection structure is used to collect the laser temperature value during the process of the laser chip generating laser light.

3. The power control system of the handheld semiconductor laser therapeutic apparatus according to claim 1, characterized in that: The circuit control system is specifically used for: Detecting whether the laser component has a fault according to the current value and the optical power value, and determining the current output power of the laser component according to the current value, the optical power value and the laser temperature value when it is determined that the laser component has no fault; Based on the current output power of the laser assembly, determining a target output power of the laser assembly, and generating a control signal corresponding to the target output power; The excitation current is output to the laser assembly according to the control signal.

4. The power control system of the handheld semiconductor laser therapeutic apparatus according to claim 3, characterized in that: The circuit control system is specifically used for: When the current value is smaller than a specified multiple of the calibration current value, and the optical power value is smaller than a specified multiple of the calibration optical power value, it is determined that there is no fault in the laser component.

5. The power control system of the handheld semiconductor laser therapeutic apparatus according to claim 3, characterized in that: The circuit control system is specifically used for: Determine a first output power of the laser assembly corresponding to the optical power value, determine a second output power of the laser assembly corresponding to the current value, and determine a temperature coefficient corresponding to the laser temperature value; The first output power, the second output power and the temperature coefficient are combined to obtain a current output power of the laser assembly.

6. The power control system of the handheld semiconductor laser therapeutic apparatus according to claim 3, characterized in that: The circuit control system is specifically used for: Determine the output power and value between the current output power of the laser assembly at an initial moment and the current output power of the laser assembly at a current moment; and determining an output power difference between the current output power of the laser assembly at a previous moment and the current output power of the laser assembly at the current moment; The current output power, the output power sum, and the output power difference of the laser component at the current moment are integrated using a PID control coefficient to obtain a target output power of the laser component.

7. The power control system of the handheld semiconductor laser therapeutic apparatus according to claim 1, characterized in that: A heat sink electrically connected to the laser assembly is also included, for providing heat dissipation function for the laser assembly during the process of generating laser light.

8. A power control method for a handheld semiconductor laser therapeutic device, characterized in that: The method is applied to the circuit control system in the power control system of the handheld semiconductor laser therapeutic device according to claim 1, and the method comprises: Acquiring working state information of the laser assembly during the laser generation process, wherein the working state information includes a current value, an optical power value, and a laser temperature value; Detecting whether the laser component has a fault according to the working status information; When it is determined that there is no fault in the laser component, the laser light generated by the laser component is adjusted according to the working status information so as to guide the laser light generated by the laser component through the optical path component.

9. The power control method of the handheld semiconductor laser therapeutic apparatus according to claim 8, characterized in that: Detecting whether the laser component has a fault according to the working status information includes: When the current value is smaller than a specified multiple of the calibration current value, and the optical power value is smaller than a specified multiple of the calibration optical power value, it is determined that there is no fault in the laser component.

10. The power control method of the handheld semiconductor laser therapeutic apparatus according to claim 9, characterized in that: Adjusting the laser generated by the laser assembly according to the working status information includes: In the case where it is determined that the laser component does not have a fault, determining the current output power of the laser component according to the current value, the optical power value and the laser temperature value; Based on the current output power of the laser assembly, determining a target output power of the laser assembly, and generating a control signal corresponding to the target output power; The excitation current is output to the laser assembly according to the control signal.

Images