Power detection device for semiconductor laser therapeutic instrument
By designing a semiconductor laser therapy instrument power detection device including spectroscopic module, optical amplifier module and power detector module, the problem of inaccurate laser output power control and lack of automatic calibration in existing equipment is solved, and more accurate laser output control and automatic power calibration are achieved.
Patent Information
- Application Number
- CN202421632780.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-10
AI Technical Summary
It is difficult for existing semiconductor laser physiotherapy equipment to accurately control the laser output power during use, and the lack of an effective power self-calibration mechanism, resulting in inaccurate output power.
A semiconductor laser therapy instrument power detection device is designed, including a power supply module, a laser output control module, a laser driving module, a laser, a spectroscopic module, a first optical amplifier module, a second optical amplifier module and a power detector module. The laser light is divided into two beams of light through the optical spectrometer module, and amplified by the optical amplifier module, the actual output power is detected by the power detector module, and compared and adjusted with the laser output control module through serial communication to achieve automatic calibration.
The device can keep the output power of the laser terminal consistent with the theoretical output power within a certain range, improves the accuracy of laser output control, and realizes automatic power calibration to ensure the accuracy and stability of the output power of the equipment during use.
Smart Images
Figure CN222926789U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of semiconductor laser therapeutic instruments, and particularly relates to a power detection device for a semiconductor laser therapeutic instrument. Background Art
[0002] In the prior art, a semiconductor laser physiotherapy device generally includes: a power supply module, a laser output control module, a laser driver module, and a laser. During the working process, after the power supply module is powered on, the laser output control module outputs a signal according to requirements to control the laser driver module to output a set current, and the laser driver module outputs the set current to the laser, so that the laser outputs laser according to requirements.
[0003] When using a semiconductor laser physiotherapy device, it is necessary to control the device to output laser with an expected power. It is required to obtain the actual output power of the terminal through a detection means and adjust it, and perform controllable power self-calibration. At present, there are the following several calibration methods for the power output of semiconductor laser physiotherapy devices:
[0004] (1) Before the device leaves the factory, manual power calibration is carried out by the manufacturer. After the device is sent out and during use, due to the influence of different environments and power attenuation caused by long-term use of the laser, the output power is inaccurate, and self-calibration cannot be performed to make the laser power output reach the expected effect;
[0005] (2) If the device is equipped with a power sensor, it is generally placed on the feedback circuit of the laser driver module. The current output power is detected through the power sensor. Although power detection and automatic calibration can be achieved, there are also drawbacks. There is a difference between the detected power and the actual output power at the laser end, and the accuracy is not enough. Summary of the Utility Model
[0006] The utility model aims at the technical problems existing in the prior art and provides a power detection device for a semiconductor laser therapeutic instrument.
[0007] The technical solution for the utility model to solve the above technical problems is as follows: a power detection device for a semiconductor laser therapeutic instrument, the detection device includes: a power supply module, a laser output control module, a laser driver module, a laser, a beam splitting module, a first optical amplifier module, a second optical amplifier module, and a power detector module;
[0008] The input end of the beam splitting module is connected to the output end of the laser;
[0009] One output end of the beam splitting module is connected to the input end of the first optical amplifier module, and the output end of the first optical amplifier module serves as the laser output terminal of the semiconductor laser therapeutic instrument;
[0010] Another output end of the beam splitting module is connected to the input end of the second optical amplifier module, and the output end of the second optical amplifier module is input to the power detector module, and the power detector module detects the power of the input light.
[0011] On the basis of the above technical solution, the present utility model can also be improved as follows.
[0012] Further, the beam splitting module divides the laser into two beams of light according to a ratio of 1:1 and then outputs them.
[0013] Further, the detection device further includes: a power comparator; the input end of the power comparator is connected to the laser output control module and the power detector module; the difference between the theoretical output power and the actual detected power of the semiconductor laser therapeutic apparatus is compared.
[0014] Further, the laser output control module and the power detector module are connected by serial port communication;
[0015] Read the actual detected power detected by the power detector module, compare the difference between the theoretical output power and the actual detected power of the semiconductor laser therapeutic apparatus, and adjust the output power of the laser based on the difference.
[0016] Further, the theoretical output power of the laser output control module includes a plurality of calibrated power points preset according to requirements;
[0017] Compare the difference between the theoretical output power and the actual detected power at each calibrated power point in the order of the points.
[0018] Further, the laser output control module outputs a control signal to the laser driver module through the EN, DAC, and PWM ports; the laser driver module outputs current to the laser, and at the same time sends a drive output feedback signal to the laser output control module through the Vout port.
[0019] Further, the laser and the beam splitting module are of an integrated structure.
[0020] The beneficial effects of a power detection device for a semiconductor laser therapeutic apparatus provided by the present utility model include: by separating the light beam, amplifying it, and then detecting the power by the power detector to adjust the output power, the laser terminal output power is kept consistent with the theoretical output power within a certain range of error, so that the laser output control is associated with the actual output size of the laser terminal, and the output of the laser power can be more precisely controlled during the use of the device, and at the same time, the purpose of automatic power calibration can also be achieved. Description of the Drawings
[0021] Figure 1Module diagram of an embodiment of a power detection device for a semiconductor laser therapeutic apparatus provided by the present utility model;
[0022] Figure 2 Circuit schematic diagram of an embodiment of a power detection device for a semiconductor laser therapeutic apparatus provided by the present utility model;
[0023] In the attached drawings, the list of components represented by each reference numeral is as follows:
[0024] 10. Power supply module, 11. Laser output control module, 12. Laser driver module, 13. Laser module with beam splitter, 14. First optical amplifier module, 15. Second optical amplifier module, 16. Power detector module, 17. Laser beam splitting and amplification module. Detailed implementation manners
[0025] The principles and features of the present utility model will be described below with reference to the attached drawings. The examples given are only for explaining the present utility model and are not intended to limit the scope of the present utility model.
[0026] As Figure 1 shown is the module diagram and circuit schematic diagram of an embodiment of a power detection device for a semiconductor laser therapeutic apparatus provided by the present utility model. It can be seen from Figure 1 and Figure 2 that the detection device includes: a power supply module 10, a laser output control module 11, a laser driver module 12, a laser, a beam splitting module, a first optical amplifier module 14, a second optical amplifier module, and a power detector module 16.
[0027] The input end of the beam splitting module is connected to the output end of the laser.
[0028] One output end of the beam splitting module is connected to the input end of the first optical amplifier module 14, and the output end of the first optical amplifier module 14 serves as the laser output terminal of the semiconductor laser therapeutic apparatus.
[0029] The other output end of the beam splitting module is connected to the input end of the second optical amplifier module. The output end of the second optical amplifier module is input to the power detector module 16, and the power detector module 16 detects the power of the input light.
[0030] During the specific implementation process, after the power supply module 10 powers on each functional module, the laser output control module 11 controls the output of the laser driving module by inputting signals. The laser driving module outputs signals to the laser. After the laser works, it outputs laser light, and the laser light is split into two beams of light at a ratio of 1:1 through the beam splitting module. To prevent laser attenuation, the optical signals of the separated beams are amplified through two optical amplifier modules. One beam of light is used for terminal treatment output, and the other beam of light is connected to the optical power detector module 16 to detect the actual output power. The probe of the power detector module 16 senses the change in light heat and converts it into power.
[0031] Embodiment 1
[0032] Embodiment 1 provided by the present utility model is an embodiment of a power detection device for a semiconductor laser therapeutic apparatus provided by the present utility model, which consists of Figure 1 and Figure 2 It can be seen that the embodiment of this detection device includes: a power supply module 10, a laser output control module 11, a laser driving module 12, a laser, a beam splitting module, a first optical amplifier module 14, a second optical amplifier module 15, a power detector module 16, and a power comparator.
[0033] In a possible embodiment, the laser and the beam splitting module are of an integrated structure. As Figure 2 shown in the laser module 13 with a beam splitter, wherein, the laser module 13 with a beam splitter, the first optical amplifier module 14, and the second optical amplifier module 15 form a laser beam splitting and amplifying module 17.
[0034] The input end of the beam splitting module is connected to the output end of the laser.
[0035] One output end of the beam splitting module is connected to the input end of the first optical amplifier module 14, and the output end of the first optical amplifier module 14 serves as the laser output terminal of the semiconductor laser therapeutic apparatus.
[0036] In a possible embodiment, the beam splitting module splits the laser into two beams of light at a ratio of 1:1 and then outputs them.
[0037] The other output end of the beam splitting module is connected to the input end of the second optical amplifier module 15, and the output end of the second optical amplifier module 15 inputs to the power detector module 16, and the power detector module 16 detects the power of the input light.
[0038] The input end of the power comparator is connected to the laser output control module 11 and the power detector module 16; the difference between the theoretical output power and the actual detected power of the semiconductor laser therapeutic apparatus is compared.
[0039] In a possible embodiment, the laser output control module 11 is communicatively connected to the power detector module 16 through a serial port.
[0040] Read the actual detected power detected by the power detector module 16, compare the theoretical output power of the semiconductor laser therapeutic apparatus with the actual detected power to obtain a difference, calculate a calibration value, and adjust the output power of the laser based on the difference, so as to achieve the effect that the terminal output power is basically consistent with the theoretical output power within the error range, and realize the output power calibration of the semiconductor laser therapeutic apparatus.
[0041] In a possible embodiment, the theoretical output power of the laser output control module 11 includes a plurality of calibrated power points preset according to requirements.
[0042] Compare the difference between the theoretical output power at each calibrated power point and the actual detected power in the order of the points.
[0043] In a possible embodiment, the laser output control module 11 outputs a control signal to the laser driver module 12 through the EN, DAC, and PWM ports; the laser driver module 12 outputs current to the laser, and at the same time sends a drive output feedback signal to the laser output control module 11 through the Vout port.
[0044] In the specific working process, after the power supply module 10 is powered on and the output power is detected, the laser output control module 11 calculates a rated output value according to the magnitude of the output power to be detected, and outputs EN, DAC, and PWM signals to control the laser driver module 12 to output a set current; the laser driver module 12 outputs current to the laser and the beam splitter module, and at the same time gives the drive output feedback signal Vout to the laser output control module 11.
[0045] After the laser module 13 with a beam splitter obtains the input current, it starts to work and outputs laser light, and divides the laser beam into two beams, which are respectively amplified by the first optical amplifier module 14 and the second optical amplifier module 15, so as to keep the energy of the separated beam consistent with the original laser beam within the error range.
[0046] The beam output by the first optical amplifier module 14 is used for the terminal output power of the treatment, and the beam output by the second optical amplifier module 15 enters the power detector module 16.
[0047] The laser output control module 11 sends an instruction to read the detected power through the serial communication method with the power detector module 16, compares it with the current theoretical value of the power to be detected, calculates and adjusts the output magnitude of the laser driver module 12, so as to achieve the effect that the terminal output power is basically consistent with the theoretical output power within the error range.
[0048] After the laser output control module 11 enters the automatic calibration mode, it automatically controls the laser driver module 12 to output the corresponding power according to the preset calibration power point information, detects and calibrates each power in the order of the points, then automatically calculates and adjusts the calibration value output by comparing the detected power and the theoretical power at the current point, and saves the adjusted calibration value after meeting the error tolerance range, so as to achieve the automatic power calibration.
[0049] The beneficial effects of a power detection device for a semiconductor laser therapeutic apparatus provided by the present utility model include: by separating the light beam, amplifying it, and then detecting the power by a power detector to adjust the output power, the output power of the laser terminal is kept consistent with the theoretical output power within a certain range of error, so that the laser output control is associated with the actual output size of the laser terminal, and the output of the laser power can be more precisely controlled during the use of the device, and at the same time, the purpose of automatic power calibration can also be achieved.
[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the description of this application herein are only for the purpose of describing specific embodiments and are not intended to limit this application.
[0051] It can be understood that spatial relationship terms such as "under", "below", "beneath", "underneath", "above", "over" etc. can be used herein to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that in addition to the orientation shown in the figure, spatial relationship terms also include different orientations of the device during use and operation. For example, if the device in the figure is flipped, the element or feature described as "under other elements" or "beneath it" or "under it" will be oriented "above" the other elements or features. Therefore, the exemplary terms "under" and "beneath" can include both the upper and lower orientations. In addition, the device may also include other orientations (such as rotating 90 degrees or other orientations), and the spatial description language used herein is accordingly interpreted.
[0052] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to the other element or connected to the other element through an intermediate element. In the following embodiments, "connection" should be understood as "electrical connection", "communication connection", etc. if there is an electrical signal or data transmission between the connected circuits, modules, units, etc.
[0053] As used herein, the singular forms "a", "an" and "the" may also include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprising", "including" or "having", etc. specify the presence of the stated features, integers, steps, operations, components, parts or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts or combinations thereof.
[0054] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A power detection device for a semiconductor laser therapeutic apparatus, the detection device comprising: A power supply module, a laser output control module, a laser driving module and a laser, wherein the detection device further comprises: a light splitting module, a first optical amplifier module, a second optical amplifier module and a power detector module; The input end of the light splitting module is connected to the output end of the laser; An output end of the light splitting module is connected to the input end of the first optical amplifier module, and the output end of the first optical amplifier module serves as a laser output terminal of the semiconductor laser therapeutic device; The other output end of the optical splitter module is connected to the input end of the second optical amplifier module, the output end of the second optical amplifier module is input to the power detector module, and the power detector module performs power detection on the input light.
2. The detection device according to claim 1, characterized in that: The light splitting module splits the laser into two beams at a 1:1 ratio and then outputs the two beams.
3. The detection device according to claim 1, characterized in that: The detection device also includes: a power comparator; the input end of the power comparator is connected to the laser output control module and the power detector module; and the difference between the theoretical output power and the actual detection power of the semiconductor laser therapeutic device is compared.
4. The detection device according to claim 1, characterized in that: The laser output control module is connected to the power detector module via serial communication; The actual detection power detected by the power detector module is read, the theoretical output power of the semiconductor laser therapeutic device is compared with the actual detection power to obtain a difference, and the output power of the laser is adjusted based on the difference.
5. The detection device according to claim 3 or 4, characterized in that: The theoretical output power of the laser output control module includes a plurality of calibration power points preset according to requirements; The difference between the theoretical output power and the actual detection power at each calibration power point is compared in order of the points.
6. The detection device according to claim 1, characterized in that: The laser output control module outputs a control signal to the laser driving module through the EN, DAC and PWM ports; the laser driving module outputs current to the laser and sends a drive output feedback signal to the laser output control module through the Vout port.
7. The detection device according to claim 1, characterized in that: The laser and the light splitting module are an integrated structure.