A laser power detection apparatus and method

Abstract

The application provides a kind of laser power detection equipment and method, it relates to power detection technical field, the equipment includes laser sampling module and main control module;Laser sampling module receives the outgoing laser of the laser equipment to be detected and converts outgoing laser from optical signal to digital signal, determines the corresponding electric waveform area of outgoing laser based on digital signal and the duration of digital signal;When main control module sends first control level to laser sampling module, laser sampling module transmits electric waveform area back to main control module;Main control module determines the laser power of the laser equipment to be detected based on electric waveform area.The application controls the transmission of electric waveform area by control level signal, avoids main control module to continuously read the data in laser sampling module, avoids the interruption of the process of laser sampling module sampling outgoing laser, and ensures the accuracy when laser power detection is carried out.

Description

Technical Field

[0001] This invention relates to the field of power detection technology, and more specifically, to a laser power detection device and method. Background Technology

[0002] With societal development, laser equipment is increasingly being applied across various fields, including industrial lasers for industrial production and medical lasers for the medical field. While the power fluctuations in high-power industrial lasers due to temperature variations, current fluctuations, and frequency fluctuations are often negligible, medical lasers, which deliver relatively low average power (typically less than or equal to 70W) to the patient, require more stringent and demanding requirements for the accuracy and stability of their average laser power compared to industrial lasers. This necessitates real-time monitoring of the output laser power of medical laser equipment.

[0003] In existing technologies, when detecting the output laser power of medical laser devices, the main control module usually needs to read the data from the sampling module in real time. This can easily lead to interruptions in the sampling process of the medical laser device, resulting in inaccurate laser power readings. Summary of the Invention

[0004] This invention provides a laser power detection device and method to solve the technical problem in the prior art where the sampling process is easily interrupted when detecting the output laser power of medical laser devices, resulting in inaccurate laser power.

[0005] To achieve the above objectives, the technical solutions adopted in the embodiments of the present invention are as follows: In a first aspect, embodiments of the present invention provide a laser power detection device, comprising: a laser sampling module and a main control module; The laser sampling module is used to receive the emitted laser when the laser device under test emits an emitted laser and convert the emitted laser from an optical signal into a digital signal, and determine the area of ​​the electrical waveform corresponding to the emitted laser based on the digital signal and the duration of the digital signal. The main control module includes a detection control unit and a power detection unit; The detection and control unit is used to send control level signals to the laser sampling module; The laser sampling module is used to receive the control level signal, and when the control level signal is a first control level, it transmits the electrical waveform area to the power detection unit; when the control level signal is a second control level, it stops transmitting the electrical waveform area to the power detection unit. The power detection unit is used to determine the laser power of the laser device under test based on the area of ​​the electrical waveform.

[0006] Furthermore, this embodiment of the invention provides a first possible implementation of the first aspect, wherein the main control module further includes a mode notification unit; The mode notification unit is used to send a sampling mode control signal to the laser sampling module; The laser sampling module is used to determine that the laser output mode of the laser device under test is continuous output and adopt a continuous laser sampling mode when the sampling mode control signal is a first level signal; and to determine that the laser output mode of the laser device under test is pulse output and adopt a pulse laser sampling mode when the sampling mode control signal is a second level signal.

[0007] Furthermore, the present invention provides a second possible implementation of the first aspect, wherein the laser sampling module is used to receive the emitted laser for a preset duration when in the continuous laser sampling mode to obtain a continuous emitted laser; convert the optical signal of the continuously emitted laser into the digital signal to obtain a continuous digital signal, and determine the electrical waveform area corresponding to the continuously emitted laser based on the continuous digital signal and the preset duration.

[0008] Furthermore, this embodiment of the invention provides a third possible implementation of the first aspect, wherein the laser sampling module is configured to, when in the pulsed laser sampling mode, start receiving the emitted laser when a first rising edge is detected, and stop receiving the emitted laser when a falling edge corresponding to the first rising edge is detected, thereby obtaining a pulsed emitted laser; convert the optical signal of the pulsed emitted laser into a digital signal to obtain a pulsed digital signal, and determine the electrical waveform area corresponding to the pulsed emitted laser based on the time interval between detecting the first rising edge and detecting the falling edge corresponding to the first rising edge and the pulsed digital signal.

[0009] Furthermore, the present invention provides a fourth possible implementation of the first aspect, wherein the laser sampling module is configured to clear the emitted laser corresponding to the first rising edge when no falling edge is detected after the first rising edge of the emitted laser is detected, and when a rising edge is detected again, and to start receiving the emitted laser when a second rising edge is detected, and to stop receiving the emitted laser when a falling edge corresponding to the second rising edge is detected.

[0010] Secondly, embodiments of the present invention also provide a laser power detection method, applied to the aforementioned laser power detection equipment, the laser power detection method comprising: When the laser device under test emits the emitted laser, the laser sampling module receives the emitted laser, converts the emitted laser from an optical signal into a digital signal, and determines the area of ​​the electrical waveform corresponding to the emitted laser based on the digital signal and the duration of the digital signal. The detection and control unit sends a control level signal to the laser sampling module. When the control level signal is the first control level, the laser sampling module is controlled to transmit the electrical waveform area to the power detection unit; when the control level signal is the second control level, the laser sampling module is controlled to stop transmitting the electrical waveform area to the power detection unit. The power detection unit is controlled to determine the laser power of the laser device under test based on the area of ​​the electrical waveform.

[0011] Furthermore, this embodiment of the invention provides a first possible implementation of the second aspect, wherein the main control module further includes a mode notification unit; The laser power detection method further includes the following steps: The mode notification unit sends a sampling mode control signal to the laser sampling module based on the mode notification unit. When the sampling mode control signal is a first-level signal, the laser sampling module is controlled to adopt a continuous laser sampling mode; when the sampling mode control signal is a second-level signal, the laser sampling module is controlled to adopt a pulsed laser sampling mode.

[0012] Furthermore, this embodiment of the invention provides a second possible implementation of the second aspect, wherein the step of receiving the emitted laser light based on the laser sampling module, converting the emitted laser light from an optical signal to a digital signal, and determining the area of ​​the electrical waveform corresponding to the emitted laser light based on the digital signal and the duration of the digital signal includes: When the laser sampling module adopts the continuous laser sampling mode, it controls the laser sampling module to receive the emitted laser for a preset duration to obtain a continuous emitted laser; the optical signal of the continuously emitted laser is converted into the digital signal to obtain a continuous digital signal, and the area of ​​the electrical waveform corresponding to the continuously emitted laser is determined according to the continuous digital signal and the preset duration.

[0013] Furthermore, this embodiment of the invention provides a third possible implementation of the second aspect, wherein the step of receiving the emitted laser light based on the laser sampling module, converting the emitted laser light from an optical signal to a digital signal, and determining the area of ​​the electrical waveform corresponding to the emitted laser light based on the digital signal and the duration of the digital signal includes: When the laser sampling module adopts the pulsed laser sampling mode, it is controlled to start receiving the emitted laser when the first rising edge is detected, and to stop receiving the emitted laser when the falling edge corresponding to the first rising edge is detected, thus obtaining a pulsed emitted laser; the optical signal of the pulsed emitted laser is converted into a digital signal to obtain a pulsed digital signal, and the area of ​​the electrical waveform corresponding to the pulsed emitted laser is determined according to the time interval between the detection of the first rising edge and the detection of the falling edge corresponding to the first rising edge and the pulsed digital signal.

[0014] Furthermore, this embodiment of the invention provides a fourth possible implementation of the second aspect, which further includes the step of: If the laser sampling module does not detect a falling edge after detecting the first rising edge of the emitted laser, and then detects another rising edge, it controls the laser sampling module to clear the emitted laser corresponding to the first rising edge, and starts receiving the emitted laser when the second rising edge is detected, and stops receiving the emitted laser when the falling edge corresponding to the second rising edge is detected.

[0015] This invention provides a laser power detection device and method. The laser power detection device includes a laser sampling module and a main control module. The laser sampling module receives the emitted laser light when the laser device under test emits an emitted laser light and converts the emitted laser light from an optical signal to a digital signal. Based on the digital signal and its duration, it determines the area of ​​the electrical waveform corresponding to the emitted laser light. The main control module includes a detection control unit and a power detection unit. The detection control unit sends a control level signal to the laser sampling module. The laser sampling module receives the control level signal and, when the control level signal is at a first control level, transmits the electrical waveform area to the power detection unit. When the control level signal is at a second control level, it stops transmitting the electrical waveform area to the power detection unit. The power detection unit determines the laser power of the laser device under test based on the electrical waveform area. This invention converts the optical signal of the emitted laser from the laser device under test into a digital signal using a laser sampling module. Based on the digital signal and its duration, the area of ​​the electrical waveform corresponding to the emitted laser is determined. A control unit in the main control module sends a control level signal to the laser sampling module, controlling whether the laser sampling module transmits the electrical waveform area to the power detection unit. Only when the control level signal is at the first control level will the laser sampling module transmit the electrical waveform area to the power detection unit of the main control module. This prevents the main control module from continuously reading the electrical waveform area from the laser sampling module, avoiding interruptions in the sampling process of the emitted laser. Finally, the laser power of the laser device under test is determined by the electrical waveform area, ensuring the accuracy of the acquired laser power. This laser power detection device can be applied to laser testing of medical laser devices, avoiding sampling interruptions during laser sampling of medical laser devices and guaranteeing the accuracy of laser power detection for medical laser devices. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a laser power detection device provided in an embodiment of the present invention; Figure 2 This is an overall schematic diagram of a laser power detection device provided in an embodiment of the present invention; Figure 3 This is a schematic flowchart of a laser power detection method provided in an embodiment of the present invention; Figure 4This is a flowchart illustrating the detection process of a laser power detection device provided in an embodiment of the present invention.

[0018] Explanation of reference numerals in the attached figures: 11-Laser sampling module; 12-Main control module; 111-Photoelectric sampling unit; 112-Analog-to-digital conversion unit; 121-Detection and control unit; 122-Power detection unit; 123-Mode notification unit; Detailed Implementation 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 described below in conjunction with the accompanying drawings. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments.

[0019] This embodiment provides a laser power detection device, see [link / reference] Figure 1 The diagram shows a module of a laser power detection device, which mainly includes a laser sampling module 11 and a main control module 12. The laser sampling module 11 is used to receive the emitted laser when the laser device under test emits an emitted laser and convert the emitted laser from an optical signal into a digital signal, and determine the area of ​​the electrical waveform corresponding to the emitted laser based on the digital signal and the duration of the digital signal. like Figure 1 As shown, the laser sampling module 11 includes a photoelectric sampling unit 111 and an analog-to-digital conversion unit 112; The photoelectric sampling unit 111 is used to receive the emitted laser emitted by the laser device under test (usually a medical laser device) and convert the optical signal of the emitted laser into an electrical signal; The analog-to-digital conversion unit 112 is used to convert the electrical signal corresponding to the emitted laser into a digital signal, and to determine the area of ​​the electrical waveform corresponding to the emitted laser by the digital signal and the duration of the digital signal.

[0020] Specifically, the photoelectric sampling unit 111 uses a photodiode. When the photodiode receives the emitted laser, it generates a voltage signal (i.e., an electrical signal). The magnitude of the generated voltage reflects the magnitude of the emitted laser's optical signal. The analog-to-digital conversion unit 112 uses an analog-to-digital converter (ADC). It receives the voltage signal generated by the photodiode and converts the voltage signal into a digital signal through analog-to-digital conversion. The value of the digital signal represents the magnitude of the voltage signal, and the duration of the digital signal corresponds to the duration of the emitted laser. The area of ​​the electrical waveform is obtained by integrating the digital signal over the duration. The area of ​​the electrical waveform reflects the laser energy of the emitted laser.

[0021] The main control module 12 includes a detection control unit 121 and a power detection unit 122. The detection control unit 121 is used to send a control level signal to the laser sampling module 11. The laser sampling module 11 is used to receive the control level signal, and when the control level signal is a first control level, it transmits the electrical waveform area to the power detection unit 122. When the control level signal is a second control level, it stops transmitting the electrical waveform area to the power detection unit 122. See Figure 2 The diagram shows an overall schematic of a laser power detection device. The main control module 12 includes a detection control unit 121 and a power detection unit 122. Specifically, when the power detection unit 122 needs to read the electrical waveform area of ​​the laser sampling module 11, the detection control unit 121 sends a first control level to the analog-to-digital conversion unit 112. At this time, the analog-to-digital conversion unit 112 needs to first determine whether the duration of the digital signal has ended. If it has ended, the electrical waveform area sampled at the most recent moment is transmitted to the power detection unit 122. If it has not ended, the electrical waveform area corresponding to the digital signal is calculated after the duration of the digital signal ends and transmitted to the power detection unit 122. When the power detection unit 122 does not need to read the electrical waveform area of ​​the laser sampling module 11, it sends a second control level to the analog-to-digital conversion unit 112. At this time, the analog-to-digital conversion unit 112 stops transmitting the electrical waveform area to the power detection unit 122. If the first control level is high, the second control level is low; conversely, if the first control level is low, the second control level is high.

[0022] The power detection unit 122 is used to determine the laser power of the laser device under test based on the area of ​​the electrical waveform; Since the area of ​​the electrical waveform reflects the laser energy of the emitted laser, the power detection unit 122 can determine the laser power of the laser device under test based on the area of ​​the electrical waveform obtained by integration and the duration of the digital signal.

[0023] The laser power detection device provided in this embodiment of the invention converts the optical signal of the emitted laser from the laser device under test into a digital signal through a laser sampling module. Based on the digital signal and its duration, the device determines the area of ​​the electrical waveform corresponding to the emitted laser. A control unit in the main control module sends a control level signal to the laser sampling module to control whether the laser sampling module transmits the electrical waveform area to the power detection unit. Only when the control level signal is at the first control level will the laser sampling module transmit the electrical waveform area to the power detection unit of the main control module. This prevents the main control module from continuously reading the electrical waveform area from the laser sampling module, avoiding interruptions in the sampling process of the emitted laser. Finally, the laser power of the laser device under test is determined by the electrical waveform area, ensuring the accuracy of the acquired laser power. This laser power detection device can be applied to laser detection of medical laser devices, avoiding sampling interruptions during the laser sampling process and ensuring the accuracy of laser power detection for medical laser devices.

[0024] In one embodiment, the main control module 12 provided in this embodiment further includes a mode notification unit 123; the mode notification unit 123 is used to send a sampling mode control signal to the laser sampling module 11; the laser sampling module 11 is used to determine that the laser output mode of the laser device under test is continuous output and adopt the continuous laser sampling mode when the sampling mode control signal is a first level signal; and to determine that the laser output mode of the laser device under test is pulse output and adopt the pulse laser sampling mode when the sampling mode control signal is a second level signal. like Figure 2As shown, the main control module 12 also includes a mode notification unit 123. This mode notification unit 123 sends different sampling mode control signals based on the laser output mode of the laser device under test at the next moment. Specifically, when the mode notification unit 123 sends a first-level signal to the laser sampling module 11, the laser sampling module 11 determines that the laser output mode of the laser device under test at the next moment is continuous output, and the analog-to-digital conversion unit 112 in the laser sampling module 11 will adopt the continuous laser sampling mode. When the mode notification unit 123 sends a second-level signal to the laser sampling module 11, the laser sampling module 11 determines that the laser output mode of the laser device under test at the next moment is pulsed output, and the analog-to-digital conversion unit 112 in the laser sampling module 11 will adopt the pulsed laser sampling mode. Because the laser output mode of the laser device under test is very unstable and may frequently switch between pulsed output and continuous output modes, the mode notification unit 123 also adaptively outputs different sampling mode control signals to the laser sampling module. Module 11, the laser sampling module 11, rapidly switches the laser sampling mode based on the sampling mode control signal. For example, when the analog-to-digital converter 112 is in pulsed laser sampling mode, it receives a first-level signal and quickly switches from pulsed laser sampling mode to continuous laser sampling mode; or, when the analog-to-digital converter 112 is in continuous laser sampling mode, it receives a second-level signal and quickly switches from continuous laser sampling mode to pulsed laser sampling mode. The sampling mode control signal enables rapid switching of the calculation method of the electrical signal sampling value of the analog-to-digital converter 112 in the laser sampling module 11, so that the analog-to-digital converter 112 only needs the conversion time of one analog-to-digital converter chip to complete the switching of the sampling mode, thereby improving the efficiency of laser sampling and realizing the feedback of the electrical waveform area corresponding to the emitted laser to the main control module 12 in the shortest possible time. Wherein, if the first-level signal is high, the second-level signal is low, and vice versa.

[0025] In one embodiment, the laser sampling module 11 provided in this embodiment is used to receive emitted laser light of a preset duration when in continuous laser sampling mode, to obtain continuously emitted laser light; to convert the optical signal of the continuously emitted laser light into a digital signal, to obtain a continuous digital signal, and to determine the area of ​​the electrical waveform corresponding to the continuously emitted laser light based on the continuous digital signal and the preset duration. If the laser output mode of the laser device under test is continuous output at the next moment, and it emits a continuous laser emission, the mode notification unit 123 sends a first level signal to the laser sampling module 11, putting it into continuous laser sampling mode. A periodic sampling timer with a preset duration is started, and the laser sampling module 11 begins sampling the emitted laser from the laser device under test. When the periodic sampling timer times out, it indicates that the preset duration has been reached, and sampling of the emitted laser from the laser device under test stops, obtaining a continuous laser emission of the preset duration. The optical signal of the continuous laser emission is converted into a digital signal, resulting in a continuous digital signal. The area of ​​the electrical waveform corresponding to the continuous laser emission is determined based on the continuous digital signal and the preset duration. At this point, it is determined that the laser sampling module 11 has completed a stable continuous laser emission sampling in continuous laser sampling mode. If a second level signal is received while the laser sampling module 11 is in the process of continuous laser sampling, the laser sampling module 11 clears the emitted laser in continuous laser sampling mode and quickly switches to pulse laser sampling mode to begin pulse laser sampling.

[0026] In one embodiment, the laser sampling module 11 provided in this embodiment is used to receive emitted laser when a first rising edge is detected when in pulsed laser sampling mode, and to stop receiving emitted laser when a falling edge corresponding to the first rising edge is detected, thereby obtaining pulsed emitted laser; converting the optical signal of the pulsed emitted laser into a digital signal to obtain a pulsed digital signal, and determining the electrical waveform area corresponding to the pulsed emitted laser based on the time interval between the detection of the first rising edge and the detection of the falling edge corresponding to the first rising edge and the pulsed digital signal; If the laser output mode of the laser device under test is pulse output in the next moment, emitting pulsed laser light, where a complete pulsed laser light output starts with a rising edge and ends with the corresponding falling edge, then the mode notification unit 123 sends a second-level signal to the laser sampling module 11, putting it into pulsed laser sampling mode. In this mode, the start and end of laser sampling are triggered by the edge of the emitted laser light. Specifically, the laser sampling module 11 starts sampling the emitted laser light when it detects the first rising edge and stops sampling when it detects the falling edge corresponding to the first rising edge, thus obtaining a complete pulsed laser light output. The optical signal of the pulsed laser is converted into a digital signal to obtain a pulsed digital signal. The time interval between the two moments is determined based on the moment when the first rising edge is detected and the moment when the corresponding falling edge is detected. The area of ​​the electrical waveform corresponding to the pulsed laser is determined according to the time interval and the pulsed digital signal. At this time, it is determined that the laser sampling module 11 has completed a complete pulsed laser sampling in the pulsed laser sampling mode. If the first level signal is received when the laser sampling module 11 is in the process of pulsed laser sampling, the laser sampling module 11 clears the emitted laser in the pulsed laser sampling mode and quickly switches to the continuous laser sampling mode to start continuous laser sampling.

[0027] In one embodiment, the laser sampling module 11 provided in this embodiment is used to clear the emitted laser corresponding to the first rising edge when no falling edge is detected after the first rising edge of the emitted laser is detected, and to start receiving the emitted laser when the second rising edge is detected, and to stop receiving the emitted laser when the falling edge corresponding to the second rising edge is detected. After detecting the first rising edge of the emitted laser, the laser sampling module 11 starts to continuously sample the emitted laser. However, if no falling edge is detected during the sampling process, but a rising edge is detected directly, it proves that the emitted laser collected by the laser sampling module 11 has a sampling error. At this time, the laser sampling module 11 clears the emitted laser received after the first rising edge, and starts to receive the emitted laser again when the second rising edge is detected. When the falling edge corresponding to the second rising edge is detected, the laser sampling module 11 stops receiving the emitted laser and obtains the emitted laser corresponding to the second rising edge.

[0028] When the laser power detection device provided in this embodiment of the invention samples the pulsed emitted laser of the laser device under test, since the pulsed emitted laser of the laser device under test does not disappear immediately when a falling edge appears, but continues to exist for a period of time, the laser sampling module 11 does not immediately trigger an interrupt when it detects the falling edge corresponding to the first rising edge, but continues to sample for a period of time until the pulsed emitted laser completely disappears. By continuously sampling the pulsed emitted laser after the falling edge triggers the interrupt, the waveform of the pulsed emitted laser is completed, further ensuring the integrity and correctness of the calculated electrical waveform area of ​​the pulsed emitted laser. Moreover, during the continuous sampling of the emitted laser by the laser sampling module 11 after the falling edge triggers the interrupt, if the edge of the pulsed laser is detected, it proves that the sampled emitted laser has a sampling error. At this time, the received emitted laser is cleared, and the receiving of emitted laser is restarted after another rising edge is detected.

[0029] This embodiment also provides a laser power detection method, applied to the aforementioned laser power detection equipment, see [link to documentation]. Figure 3 The diagram shows a flow chart of a laser power detection method, which includes: Step S401: When the laser device to be tested emits an outgoing laser, the laser sampling module receives the outgoing laser, converts the outgoing laser from an optical signal into a digital signal, and determines the area of ​​the electrical waveform corresponding to the outgoing laser based on the digital signal and the duration of the digital signal. Step S403: The detection control unit sends a control level signal to the laser sampling module; Step S405: When the control level signal is at the first control level, the laser sampling module is controlled to transmit the waveform area to the power detection unit; when the control level signal is at the second control level, the laser sampling module is controlled to stop transmitting the waveform area to the power detection unit. Step S407: The control power detection unit determines the laser power of the laser device to be tested based on the area of ​​the electrical waveform.

[0030] In one embodiment, the main control module provided in this embodiment further includes a mode notification unit; The laser power detection method also includes the following steps: Step S409: Send a sampling mode control signal to the laser sampling module based on the mode notification unit; Step S411: When the sampling mode control signal is a first level signal, the laser sampling module is controlled to adopt a continuous laser sampling mode; when the sampling mode control signal is a second level signal, the laser sampling module is controlled to adopt a pulsed laser sampling mode.

[0031] In one embodiment, this embodiment provides a specific implementation method for receiving emitted laser light using a laser sampling module, converting the emitted laser light from an optical signal to a digital signal, and determining the area of ​​the electrical waveform corresponding to the emitted laser light based on the digital signal and its duration. Step S4011: When the laser sampling module adopts the continuous laser sampling mode, the laser sampling module is controlled to receive the emitted laser for a preset duration to obtain the continuously emitted laser; the optical signal of the continuously emitted laser is converted into a digital signal to obtain a continuous digital signal, and the area of ​​the electrical waveform corresponding to the continuously emitted laser is determined according to the continuous digital signal and the preset duration.

[0032] In one embodiment, this embodiment provides a specific implementation method for receiving emitted laser light in a laser sampling module, converting the emitted laser light from an optical signal into a digital signal, and determining the area of ​​the electrical waveform corresponding to the emitted laser light based on the digital signal and the duration of the digital signal. Step S4013: When the laser sampling module adopts the pulsed laser sampling mode, the laser sampling module is controlled to start receiving the emitted laser when the first rising edge is detected, and to stop receiving the emitted laser when the falling edge corresponding to the first rising edge is detected, so as to obtain the pulsed emitted laser; the optical signal of the pulsed emitted laser is converted into a digital signal to obtain a pulsed digital signal, and the area of ​​the electrical waveform corresponding to the pulsed emitted laser is determined according to the time interval between the detection of the first rising edge and the detection of the falling edge corresponding to the first rising edge and the pulsed digital signal.

[0033] In one embodiment, the laser power detection method provided in this embodiment further includes the following steps: Step S413: If the laser sampling module does not detect a falling edge after detecting the first rising edge of the emitted laser, and detects another rising edge, the laser sampling module is controlled to clear the emitted laser corresponding to the first rising edge, and to start receiving the emitted laser when the second rising edge is detected, and to stop receiving the emitted laser when the falling edge corresponding to the second rising edge is detected.

[0034] The laser power detection device and method provided in this embodiment of the invention, when detecting the laser power of the laser device under test (usually a medical laser device), first determines whether the laser output mode of the laser device under test at the next moment is continuous output or pulse output, so that the mode notification unit 123 sends a corresponding sampling mode control signal to the laser sampling module 11, so that the laser sampling module 11 adopts the corresponding sampling mode, thereby improving the sampling efficiency of the laser sampling module 11 for the electrical waveform area. The laser sampling module 11 samples the emitted laser of the laser device under test in the corresponding sampling mode, and obtains the electrical waveform area of ​​the emitted laser by integrating the digital signal corresponding to the emitted laser over time. By solving the integral, the electrical waveform area can still be accurately obtained even when the digital signal corresponding to the emitted laser is not a traditional square wave. When the main control module 12 needs to obtain the electrical waveform area, it sends a first control level to the laser sampling module 11 through the detection control unit 121. After the laser sampling module 11 completes the sampling of the emitted laser, it transmits the electrical waveform area corresponding to the emitted laser back to the power detection unit 122 of the main control module 12, thereby obtaining the laser power corresponding to the emitted laser. The laser power detection device provided in this embodiment of the invention uses an analog-to-digital conversion unit 112 in the laser sampling module 11 to calculate the area of ​​the electrical waveform. After completing one calculation of the electrical waveform area, the laser sampling module 11 determines the specific value of the control level signal sent by the main control module 12. If it is the first control level, the electrical waveform area corresponding to the emitted laser that was just sampled and calculated is sent to the power detection unit 122 of the main control module 12; if it is the second control level, the electrical waveform area corresponding to the emitted laser that was just sampled and calculated is not sent to the power detection unit 122 of the main control module 12. When the main control module 12 acquires the sampling data from the laser sampling module 11, it uses the control level... The signal is implemented, and the priority of solving the electrical waveform area in the laser sampling module 11 is set high, preventing external modules from interrupting the sampling process. This avoids the situation in the prior art where the main control module 12 continuously acquires the sampling data in the laser sampling module 11, causing the sampling module to be interrupted. This laser power detection device can be applied to laser detection of medical laser equipment, avoiding the problem of sampling interruption during the laser sampling process of medical laser equipment, ensuring the continuity of sampling the emitted laser of medical laser equipment, ensuring the integrity and accuracy of electrical waveform area calculation, and thus ensuring the accuracy of laser power detection of medical laser equipment.

[0035] Based on the foregoing embodiments, this embodiment provides an example of using the aforementioned laser power detection equipment to perform laser power detection on a medical laser device. See [link to example]. Figure 4 The diagram shows a detection flowchart for a laser power detection device. The specific detection process is as follows: When the medical laser device emits laser light and the main control module 12 does not send a sampling mode control signal to the laser sampling module 11, the laser sampling module 11 defaults to using the continuous laser sampling mode to sample the medical laser device. When the laser output mode of the medical laser device is continuous output at the next moment, the mode notification unit 123 sends a first level signal (high level) to the laser sampling module 11. The laser sampling module 11 adopts a continuous laser sampling mode and starts sampling the emitted laser of the medical laser device by starting a periodic sampling timer with a preset duration. When the periodic sampling timer times out, it stops sampling the emitted laser of the medical laser device to obtain a continuous emitted laser of a preset duration. The photoelectric sampling unit 111 (using a photodiode) converts the continuous emitted laser into a corresponding continuous electrical signal. The analog-to-digital conversion unit 112 (using an analog-to-digital converter) converts the continuous electrical signal into a corresponding continuous digital signal and obtains the electrical waveform area corresponding to the continuous emitted laser based on the continuous digital signal and the preset duration. The main control module 12 sends a second control level (low level) to the laser sampling module 11 when it is not necessary to obtain the electrical waveform area, and sends a first control level (high level) to the laser sampling module 11 when it is necessary to obtain the electrical waveform area. When the laser sampling module 11 receives the first control level, it sends the electrical waveform area corresponding to the continuous emitted laser to the power detection unit 122. When the laser output mode of the medical laser device is pulse output at the next moment, the mode notification unit 123 sends a second level signal (low level) to the laser sampling module 11. The laser sampling module 11 adopts a pulse laser sampling mode, which is used to start receiving the emitted laser when the first rising edge is detected, and stop receiving the emitted laser when the falling edge corresponding to the first rising edge is detected, thus obtaining the pulse emitted laser. The photoelectric sampling unit 111 (using a photodiode) is used to convert the pulse emitted laser into a corresponding pulse electrical signal. The analog-to-digital conversion unit 112 (using an analog-to-digital converter) is used to convert the pulse electrical signal into a corresponding pulse digital signal, and determine the electrical waveform area corresponding to the pulse emitted laser based on the time interval between the detection of the first rising edge and the detection of the falling edge corresponding to the first rising edge, and the pulse digital signal. The main control module 12 is used to send a second control level (low level) to the laser sampling module 11 when it is not necessary to obtain the electrical waveform area, and to send a first control level (high level) to the laser sampling module 11 when it is necessary to obtain the electrical waveform area. When the laser sampling module 11 receives the first control level, it sends the electrical waveform area corresponding to the pulse emitted laser to the power detection unit 122. The power detection unit 122 is used to determine the laser power of the laser device under test based on the area of ​​the electrical waveform; When the laser power sampling module is in pulsed laser sampling mode, it is also used to: clear the emitted laser light received after the first rising edge is detected but no falling edge is detected, and when a rising edge is detected, start receiving emitted laser light when the second rising edge is detected, and stop receiving emitted laser light when the falling edge corresponding to the second rising edge is detected; continue to sample the pulsed emitted laser light from the medical laser device for a period of time when the falling edge corresponding to the first rising edge is detected, until the pulsed emitted laser light corresponding to the first rising edge completely disappears; during the period of laser sampling of the pulsed emitted laser light from the medical laser device after the falling edge corresponding to the first rising edge is detected, if an edge of the pulsed emitted laser light is detected, it proves that a sampling error has occurred in the sampled emitted laser light, at which point the received emitted laser light light is cleared, and receiving emitted laser light light resumes after another rising edge is detected; and receive the sampling mode control signal in real time and quickly switch the sampling mode when the sampling mode control signal changes.

[0036] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or apparatus referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0037] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the term "installation" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal connection of two devices. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A laser power detection apparatus, characterized by, include: Laser sampling module and main control module; The laser sampling module is used to receive the emitted laser when the laser device under test emits an emitted laser and convert the emitted laser from an optical signal into a digital signal, and determine the area of ​​the electrical waveform corresponding to the emitted laser based on the digital signal and the duration of the digital signal. The main control module includes a detection control unit and a power detection unit; The detection and control unit is used to send control level signals to the laser sampling module; The laser sampling module is used to receive the control level signal, and when the control level signal is a first control level, it transmits the electrical waveform area to the power detection unit; when the control level signal is a second control level, it stops transmitting the electrical waveform area to the power detection unit. The power detection unit is used to determine the laser power of the laser device to be tested based on the area of ​​the electrical waveform. The main control module also includes a mode notification unit; The mode notification unit is used to send a sampling mode control signal to the laser sampling module; The laser sampling module is used to determine that the laser output mode of the laser device under test is continuous output and adopt a continuous laser sampling mode when the sampling mode control signal is a first level signal; and to determine that the laser output mode of the laser device under test is pulse output and adopt a pulse laser sampling mode when the sampling mode control signal is a second level signal.

2. The laser power detection apparatus according to claim 1, characterized by, The laser sampling module is used to receive the emitted laser for a preset duration when in the continuous laser sampling mode to obtain a continuous emitted laser; convert the optical signal of the continuously emitted laser into the digital signal to obtain a continuous digital signal, and determine the area of ​​the electrical waveform corresponding to the continuously emitted laser based on the continuous digital signal and the preset duration.

3. The laser power detection apparatus according to claim 1, wherein The laser sampling module is used to, when in the pulsed laser sampling mode, start receiving the emitted laser when a first rising edge is detected, and stop receiving the emitted laser when a falling edge corresponding to the first rising edge is detected, thereby obtaining a pulsed emitted laser; convert the optical signal of the pulsed emitted laser into a digital signal to obtain a pulsed digital signal, and determine the electrical waveform area corresponding to the pulsed emitted laser based on the time interval between detecting the first rising edge and detecting the falling edge corresponding to the first rising edge and the pulsed digital signal.

4. The laser power detection apparatus according to claim 3, wherein The laser sampling module is configured to clear the emitted laser corresponding to the first rising edge when no falling edge is detected after the first rising edge of the emitted laser is detected, and to start receiving the emitted laser when the second rising edge is detected, and to stop receiving the emitted laser when the falling edge corresponding to the second rising edge is detected.

5. A method of detecting laser power, characterized by, The laser power detection method, applied to the laser power detection device according to any one of claims 1-4, comprises: When the laser device under test emits the emitted laser, the laser sampling module receives the emitted laser, converts the emitted laser from an optical signal into a digital signal, and determines the area of ​​the electrical waveform corresponding to the emitted laser based on the digital signal and the duration of the digital signal. The detection and control unit sends a control level signal to the laser sampling module. When the control level signal is the first control level, the laser sampling module is controlled to transmit the electrical waveform area to the power detection unit; when the control level signal is the second control level, the laser sampling module is controlled to stop transmitting the electrical waveform area to the power detection unit. The power detection unit is controlled to determine the laser power of the laser device under test based on the area of ​​the electrical waveform. The laser power detection method further includes: The mode notification unit sends a sampling mode control signal to the laser sampling module based on the mode notification unit. When the sampling mode control signal is a first-level signal, the laser sampling module is controlled to adopt a continuous laser sampling mode; when the sampling mode control signal is a second-level signal, the laser sampling module is controlled to adopt a pulsed laser sampling mode.

6. The laser power detection method according to claim 5, characterized in that, The steps of receiving the emitted laser light based on the laser sampling module, converting the emitted laser light from an optical signal to a digital signal, and determining the area of ​​the electrical waveform corresponding to the emitted laser light based on the digital signal and the duration of the digital signal include: When the laser sampling module adopts the continuous laser sampling mode, it controls the laser sampling module to receive the emitted laser for a preset duration to obtain a continuous emitted laser; the optical signal of the continuously emitted laser is converted into the digital signal to obtain a continuous digital signal, and the area of ​​the electrical waveform corresponding to the continuously emitted laser is determined according to the continuous digital signal and the preset duration.

7. The laser power detection method according to claim 5, characterized in that, The steps of receiving the emitted laser light based on the laser sampling module, converting the emitted laser light from an optical signal to a digital signal, and determining the area of ​​the electrical waveform corresponding to the emitted laser light based on the digital signal and the duration of the digital signal include: When the laser sampling module adopts the pulsed laser sampling mode, it is controlled to start receiving the emitted laser when the first rising edge is detected, and to stop receiving the emitted laser when the falling edge corresponding to the first rising edge is detected, thus obtaining a pulsed emitted laser; the optical signal of the pulsed emitted laser is converted into a digital signal to obtain a pulsed digital signal, and the area of ​​the electrical waveform corresponding to the pulsed emitted laser is determined according to the time interval between the detection of the first rising edge and the detection of the falling edge corresponding to the first rising edge and the pulsed digital signal.

8. The laser power detection method according to claim 7, characterized in that, It also includes the following steps: If the laser sampling module does not detect a falling edge after detecting the first rising edge of the emitted laser, and then detects another rising edge, it controls the laser sampling module to clear the emitted laser corresponding to the first rising edge, and starts receiving the emitted laser when the second rising edge is detected, and stops receiving the emitted laser when the falling edge corresponding to the second rising edge is detected.

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