Detection system for detecting laser energy of emergent head and detection method thereof

Abstract

The invention provides a detection system for detecting laser energy of an emitting head and a detection method thereof, and the system comprises a power detection assembly which comprises a plurality of monitoring units; each monitoring unit comprises a laser emitting head and a power monitoring module which are electrically connected in sequence; each power monitoring module can collect optical signals and convert the optical signals into analog quantity signals; the power acquisition assembly comprises a power acquisition module for processing analog quantity signals, and the power acquisition module is electrically connected with the plurality of monitoring units so as to acquire, calibrate and process analog signal data transmitted by the plurality of monitoring units; an upper computer; and the power acquisition module is electrically connected with the upper computer, transmits the calibrated analog signal data to the upper computer, stores the analog signal data and judges whether the analog signal data is abnormal or not. According to the invention, synchronous acquisition of energy and power of the multi-path laser emitting head, real-time high-precision data conversion and data transmission can be realized, and detection requirements of multi-optical-path laser equipment are met.

Description

Technical Field

[0001] This invention relates to the field of laser detection technology, and in particular to a detection system and method for detecting the energy of a laser beam emitted from a laser source. Background Technology

[0002] In the field of laser processing, the detection of energy and power of the laser emitter is the key to ensuring processing accuracy. Existing laser detection devices have problems such as limited number of acquisition channels, low signal transmission and conversion accuracy, and most of them are integrated designs, which are inconvenient to disassemble and assemble and have poor adaptability.

[0003] Meanwhile, traditional testing equipment lacks standardized signal transmission interfaces, resulting in low data interaction efficiency with the host computer. It cannot achieve synchronous acquisition, real-time transmission, and accurate reconstruction of multi-channel data, making it difficult to meet the testing needs of multi-channel laser processing equipment and affecting real-time monitoring and troubleshooting of the production process. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a detection system and method for detecting the energy of laser emitters, which can realize the synchronous acquisition of energy and power of multiple laser emitters, real-time high-precision data conversion and data transmission, and adapt to the detection needs of multi-optical-path laser equipment.

[0005] The embodiments of the present invention are achieved through the following technical solutions: A detection system for detecting the energy of an emitted laser head, comprising: A power detection component includes several monitoring units; each monitoring unit includes a laser emitter and a power monitoring module connected in sequence; each power monitoring module can acquire optical signals and convert them into analog signals; The power acquisition component includes a power acquisition module that processes analog signals. The power acquisition module is electrically connected to several monitoring units to acquire and calibrate analog signal data transmitted by the several monitoring units. The host computer; the power acquisition module is electrically connected to the host computer, and the power acquisition module transmits the calibrated analog signal data to the host computer, stores it, and determines whether there is an abnormality.

[0006] According to a preferred embodiment, the power monitoring module is equipped with a PD photodiode for acquiring laser light signals and converting them into analog signals; Each of the power monitoring modules is equipped with a DB9 output interface, and each power monitoring module transmits data to the DB9 receiving interface of the power acquisition module through the corresponding DB9 output interface.

[0007] According to a preferred embodiment, the power monitoring module includes a first operational amplifier chip, a first RC parallel circuit, a first potentiometer, and a second RC parallel circuit.

[0008] According to a preferred embodiment, the power acquisition module includes a second operational amplifier chip and a third RC parallel circuit.

[0009] According to a preferred embodiment, the first operational amplifier chip includes a first operational amplifier unit and a second operational amplifier unit; The first operational amplifier unit is a transimpedance amplifier, and the second operational amplifier unit is an inverting proportional amplifier; The output terminal of the first operational amplifier unit is connected to one end of the first RC parallel circuit, the inverting input terminal of the first operational amplifier unit is connected to the other end of the first RC parallel circuit, and the non-inverting input terminal of the first operational amplifier unit is connected to the cathode of the photodiode PD, and the anode of the photodiode PD is grounded. The output terminal of the first operational amplifier unit is connected to the inverting input terminal of the first operational amplifier unit via resistor R2; the voltage divider network composed of the first potentiometer VR1 and resistor R3 provides DC bias for the second operational amplifier unit; The inverting input terminal of the second operational amplifier unit is connected to one end of the second RC parallel circuit, and the output terminal of the second operational amplifier unit is connected to the other end of the second RC parallel circuit; the non-inverting input terminal of the second operational amplifier unit is grounded.

[0010] According to a preferred embodiment, the second operational amplifier chip includes a third operational amplifier unit, a fourth operational amplifier unit, a fifth operational amplifier unit, and a sixth operational amplifier unit; The third operational amplifier unit is a differential signal input terminal, the fourth operational amplifier unit is a voltage follower circuit, the fifth operational amplifier unit is a subtractor, and the sixth operational amplifier unit is an inverting proportional amplifier. The positive input terminal (ADC IN V1+) is connected to the non-inverting input terminal of the third operational amplifier unit via resistor R6, and the negative input terminal (ADC IN V1-) is connected to the inverting input terminal of the third operational amplifier unit via resistor R8; the non-inverting input terminal of the third operational amplifier unit is grounded via resistor R5, the inverting input terminal of the third operational amplifier unit is connected to the output terminal of the third operational amplifier unit via resistor R10, and the output terminal of the third operational amplifier unit is connected to the inverting input terminal of the sixth operational amplifier unit via resistor R7. The reference voltage input (REF 4.5V) is connected to the non-inverting input of the fourth operational amplifier unit via resistor R47. The inverting input of the fourth operational amplifier unit is connected to its output. The output of the fourth operational amplifier unit is connected to the non-inverting input of the sixth operational amplifier unit via resistor R45. The non-inverting input of the sixth operational amplifier unit is grounded via resistor R46. The inverting input of the sixth operational amplifier unit is connected to its output via resistor R9. The output terminal of the sixth operational amplifier unit is connected to the inverting input terminal of the fifth operational amplifier unit via resistor R48, and the non-inverting input terminal of the fifth operational amplifier unit is grounded; a third RC parallel circuit consisting of resistor R59 and capacitor C71 is connected between the inverting input terminal and the output terminal of the fifth operational amplifier unit; the output terminal of the fifth operational amplifier unit is connected to the output terminal (ADC IN V3) via resistor R62, and the output terminal is grounded via capacitor C13.

[0011] According to a preferred embodiment, the second RC parallel circuit includes a capacitor C4, a resistor R4, and a second potentiometer VR2.

[0012] According to a preferred embodiment, the number of monitoring units is three.

[0013] A detection method for detecting the energy of a laser emitted from a laser head specifically includes the following steps: Step S100: Install the power monitoring module at the laser emitter head. When the laser emitter head outputs laser light, the PD photodiode collects the laser light signal and converts it into an analog signal. The analog signal data is then transmitted to the power acquisition module to complete the signal acquisition. In step S200, the power acquisition module processes the received analog signal, calculates the laser energy using an integration algorithm, restores the real-time power, and then compensates for the accuracy using a calibration algorithm to complete the processing of the analog signal. In step S300, the power acquisition module sends the calculated laser power and energy data to the PC host computer to complete the data transmission. Step S400: The host computer stores and judges the data; If the data exceeds the preset alarm threshold K, an anomaly alert will be issued. If the data is below the preset alarm threshold K, then the real-time monitoring of the data is completed.

[0014] According to a preferred embodiment, in step S200, the power acquisition module processes the received analog signal, records the true energy value E1, calculates the laser energy value E through an integral algorithm, and obtains the calibrated laser energy calibration value Ej by compensating for the accuracy through a calibration algorithm. The integral algorithm calculation formula is as follows: E = (P1 + P2 + P3 + ... + Pn) × Δt Where Δt is the time slice; Time slice Δt = pulse width T / number of acquisitions N; P1 is the power corresponding to t1, P2 is the power corresponding to t2, P3 is the power corresponding to t3, and Pn is the power corresponding to tn. The formula for calculating the compensation accuracy of the calibration algorithm is as follows: Ej = E×a³ + E×b² + E×c + d, where a, b, c, and d are fitting parameters, E is the laser energy, and Ej is the laser energy calibration value.

[0015] The technical solutions of the embodiments of the present invention have at least the following advantages and beneficial effects: This invention enables synchronous acquisition, real-time conversion, and data transmission of energy and power from multiple laser emitters, adapting to the detection needs of multi-path laser equipment and providing real-time judgment. Specifically, it can acquire laser light signals and convert them into analog signals, transmit the analog signal data to the power acquisition module for processing, calculate the laser energy using an integral algorithm, restore the real-time power, and then compensate for accuracy using a calibration algorithm, completing the analog signal processing. It can perform high-precision compensation on real data, improve detection accuracy, has strong compatibility and high interaction efficiency, ensures real-time monitoring and fault diagnosis of the production process, and adapts to the detection needs of multi-path laser equipment. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of a detection system for detecting the energy of an emitted laser head, provided in an embodiment of the present invention; Figure 2 A schematic diagram of the circuit structure of the power monitoring module provided in an embodiment of the present invention; Figure 3 A schematic diagram of the circuit structure of the power acquisition module provided in an embodiment of the present invention; Figure 4 A schematic diagram of an integral graph for calculating laser energy using an integral algorithm provided in an embodiment of the present invention; Figure 5 A line graph illustrating the calibration algorithm compensation accuracy provided in this embodiment of the invention; Figure 6A table of specific experimental data for the calibration algorithm compensation accuracy provided in the embodiments of the present invention.

[0018] Icons: 1-Laser emitter, 2-Power monitoring module, 3-Power acquisition module, 4-Host computer. Detailed Implementation

[0019] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0020] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 element 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.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Example

[0022] Reference Figures 1 to 6 A detection system for detecting the energy of a laser emitter head includes: a power detection component comprising several monitoring units; each monitoring unit comprising a laser emitter head and a power monitoring module connected in sequence and electrically; each power monitoring module being capable of acquiring optical signals and converting them into analog signals; a power acquisition component comprising a power acquisition module for processing the analog signals, the power acquisition module being electrically connected to the several monitoring units to acquire and calibrate the analog signal data transmitted by the several monitoring units; and a host computer; the power acquisition module being electrically connected to the host computer, the power acquisition module transmitting the calibrated analog signal data to the host computer for storage and determination of whether there is an anomaly.

[0023] Preferably, the power monitoring module is equipped with a PD photodiode for acquiring laser light signals and converting them into analog signals; Each of the power monitoring modules is equipped with a DB9 output interface, and each power monitoring module transmits data to the DB9 receiving interface of the power acquisition module through the corresponding DB9 output interface.

[0024] Preferably, the power monitoring module includes a first operational amplifier chip, a first RC parallel circuit, a first potentiometer, and a second RC parallel circuit.

[0025] Preferably, the power acquisition module includes a second operational amplifier chip and a third RC parallel circuit.

[0026] Preferably, the first operational amplifier chip includes a first operational amplifier unit and a second operational amplifier unit; The first operational amplifier unit is a transimpedance amplifier, and the second operational amplifier unit is an inverting proportional amplifier; The output terminal of the first operational amplifier unit is connected to one end of the first RC parallel circuit, the inverting input terminal of the first operational amplifier unit is connected to the other end of the first RC parallel circuit, and the non-inverting input terminal of the first operational amplifier unit is connected to the cathode of the photodiode PD, and the anode of the photodiode PD is grounded. The output terminal of the first operational amplifier unit is connected to the inverting input terminal of the first operational amplifier unit via resistor R2; the voltage divider network composed of the first potentiometer VR1 and resistor R3 provides DC bias for the second operational amplifier unit; The inverting input terminal of the second operational amplifier unit is connected to one end of the second RC parallel circuit, and the output terminal of the second operational amplifier unit is connected to the other end of the second RC parallel circuit; the non-inverting input terminal of the second operational amplifier unit is grounded.

[0027] Preferably, the second operational amplifier chip includes a third operational amplifier unit, a fourth operational amplifier unit, a fifth operational amplifier unit, and a sixth operational amplifier unit; The third operational amplifier unit is a differential signal input terminal, the fourth operational amplifier unit is a voltage follower circuit, the fifth operational amplifier unit is a subtractor, and the sixth operational amplifier unit is an inverting proportional amplifier. The positive input terminal (ADC IN V1+) of the power acquisition module is connected to the non-inverting input terminal of the third operational amplifier unit via resistor R6, and the negative input terminal (ADC IN V1-) of the power acquisition module is connected to the inverting input terminal of the third operational amplifier unit via resistor R8; the non-inverting input terminal of the third operational amplifier unit is grounded via resistor R5, the inverting input terminal of the third operational amplifier unit is connected to the output terminal of the third operational amplifier unit via resistor R10, and the output terminal of the third operational amplifier unit is connected to the inverting input terminal of the sixth operational amplifier unit via resistor R7; The reference voltage input (REF 4.5V) is connected to the non-inverting input of the fourth operational amplifier unit via resistor R47. The inverting input of the fourth operational amplifier unit is connected to its output. The output of the fourth operational amplifier unit is connected to the non-inverting input of the sixth operational amplifier unit via resistor R45. The non-inverting input of the sixth operational amplifier unit is grounded via resistor R46. The inverting input of the sixth operational amplifier unit is connected to its output via resistor R9. The output terminal of the sixth operational amplifier unit is connected to the inverting input terminal of the fifth operational amplifier unit via resistor R48, and the non-inverting input terminal of the fifth operational amplifier unit is grounded; a third RC parallel circuit consisting of resistor R59 and capacitor C71 is connected between the inverting input terminal and the output terminal of the fifth operational amplifier unit; the output terminal of the fifth operational amplifier unit is connected to the output terminal (ADC IN V3) via resistor R62, and the output terminal is grounded via capacitor C13.

[0028] Preferably, the second RC parallel circuit includes a capacitor C4, a resistor R4, and a second potentiometer VR2.

[0029] Preferably, the number of monitoring units is three.

[0030] A detection method for detecting the energy of a laser emitted from a laser head specifically includes the following steps: Step S100: Install the power monitoring module at the laser emitter head. When the laser emitter head outputs laser light, the PD photodiode collects the laser light signal and converts it into an analog signal. The analog signal data is then transmitted to the power acquisition module to complete the signal acquisition. In step S200, the power acquisition module processes the received analog signal, calculates the laser energy using an integration algorithm, restores the real-time power, and then compensates for the accuracy using a calibration algorithm to complete the processing of the analog signal. In step S300, the power acquisition module sends the calculated laser power and energy data to the PC host computer to complete the data transmission. Step S400: The host computer stores and judges the data; If the data exceeds the preset alarm threshold K, an anomaly alert will be issued. If the data is below the preset alarm threshold K, then the real-time monitoring of the data is completed.

[0031] Preferably, in step S200, the power acquisition module processes the received analog signal, records the true energy value E1, calculates the laser energy value E through an integration algorithm, and obtains the calibrated laser energy calibration value Ej by compensating for accuracy through a calibration algorithm. The integral algorithm calculation formula is as follows: E = (P1 + P2 + P3 + ... + Pn) × Δt Where Δt is the time period recorded; P1 is the power corresponding to t1, P2 is the power corresponding to t2, P3 is the power corresponding to t3, and Pn is the power corresponding to tn. The formula for calculating the compensation accuracy of the calibration algorithm is: Ej = E×a³ + E×b² + E×c + d Where a, b, c, and d are fitting parameters, E is the laser energy, and Ej is the laser energy calibration value.

[0032] Preferably, based on the recorded actual energy value E1 and laser energy value E, the following calculation formula for accuracy compensation using the calibration algorithm is obtained: a is 0.0008870266; b is -0.0271713049; c is 1.1724086373; d is -0.0132508017.

[0033] Working principle of the invention: In step S100, the power monitoring module transmits the signal to the DB9 receiving interface of the power acquisition module through the DB9 output interface to complete the signal acquisition. In step S300, the power acquisition module sends the calculated laser power and energy data to the host computer in real time via the TCP network port.

[0034] In this embodiment, the first RC parallel circuit includes a resistor R1 and a capacitor C3, with the resistance of R1 being 47KΩ and the capacitance of C3 being 10pF; the second RC parallel circuit includes a resistor R4, a second potentiometer, and a capacitor C4, with the resistance of R4 being 10KΩ and the capacitance of C4 being 10pF, and the resistance of the second potentiometer ranging from 0 to 100KΩ; the third RC parallel capacitor includes a capacitor C71 and a resistor R59, with the resistance of R59 being 20KΩ and the capacitance of C71 being 102pF. A resistor R2, a resistor R3, and a first potentiometer are provided between the first terminal of the first operational amplifier unit and the thirteenth terminal of the second operational amplifier unit. The resistance of the resistor R2 is 10KΩ, the resistance of the resistor R3 is 200KΩ, and the resistance range of the first potentiometer is 0-100KΩ. The third operational amplifier unit has resistors R5 and R6 respectively at its third terminal, with R5 having a resistance of 10KΩ and R6 having a resistance of 10KΩ; the second terminal of the third operational amplifier unit has resistor R8 with a resistance of 10KΩ; a resistor R10 with a resistance of 10KΩ is placed between the second terminal and the first terminal of the third operational amplifier unit; and a resistor R7 with a resistance of 10KΩ is placed between the first terminal of the third operational amplifier unit and the thirteenth terminal of the sixth operational amplifier unit. The sixth terminal of the fourth operational amplifier unit is connected to the seventh terminal of the fourth operational amplifier unit. The seventh terminal of the fourth operational amplifier unit and the twelfth terminal of the sixth operational amplifier unit are provided with resistor R45 and grounding resistor R46. The resistance values ​​of resistor R45 and resistor R46 are both 10KΩ. The eighth terminal of the fifth operational amplifier unit is connected to a resistor R62 and a test point TP6. The resistance of the resistor R62 is 100Ω, and the test point TP6 is connected to a capacitor C13 with a capacitance of 104pF. The test point TP6 is also equipped with an ADC IN V3 signal channel. A resistor R9 is provided between the thirteenth and fourteenth terminals of the sixth operational amplifier unit, and a resistor R48 is also provided at the fourteenth terminal of the sixth operational amplifier unit. The resistance values ​​of both resistors R9 and R48 are 10KΩ.

[0035] The power acquisition module can independently and in parallel acquire and process analog signals from three power monitoring modules, with an acquisition accuracy better than 3%; the calibration algorithm compensation accuracy supports calibration parameter settings to within 10 decimal places.

[0036] This embodiment adopts a split design, where the power monitoring module can be directly mounted on the laser emitter head, making it easy to install and remove. The power acquisition module centrally processes the signal, reducing signal transmission loss and improving detection accuracy.

[0037] This embodiment can detect three laser emitters, each equipped with a power monitoring module. The power acquisition module is equipped with three standardized DB9 interfaces, enabling synchronous and independent acquisition of data from three (or more) laser emitters, adapting to the detection needs of multi-path laser equipment, with an acquisition accuracy better than 3%. The power acquisition module incorporates an integration algorithm and a high-precision calibration algorithm, accurately restoring laser power and energy data. The algorithm is adaptable to laser detection with different emission modes, making it widely applicable. The power acquisition module achieves standardized network communication with the host computer via a TCP port, ensuring stable and efficient data transmission. The host computer can display, store, and monitor thresholds, facilitating real-time control and historical data traceability in the production process. The overall structure is simple, with standardized interfaces for each component, strong compatibility, and convenient installation and operation, adaptable to various lasers. Specifically, in this embodiment, the power monitoring module may include an energy meter, which records the actual value, i.e., the actual energy value E1. The power acquisition module may include a board, which can calculate the laser energy value E(E1) using an integration algorithm. Figure 4(Shaded area) By recording multiple data points—the actual energy value E1 of the emitted light at different power levels and the laser energy value E calculated by the board integration algorithm for different power levels—and combining this with the calculation formula for the compensation accuracy of the calibration algorithm, we obtain the following values: a = 0.0008870266; b = -0.0271713049; c = 1.1724086373; d = -0.0132508017. Furthermore, a, b, c, and d are not limited to the above values; they change with the data settings and adjustments of the power monitoring module and the power acquisition module. Finally, based on the known values ​​of a, b, c, and d and the calculation formula for the compensation accuracy of the calibration algorithm, the laser energy calibration value Ej is calculated. Specific data can be found in Table 6. An alarm threshold K is preset according to the actual situation. When Ej exceeds the alarm threshold K, it is considered abnormal. Specifically, the alarm threshold K can also be preset to a numerical range such as K-10%≤Ej≤K+10%. When Ej is not within the range of K-10% to K+10%, it is judged to be abnormal and an alarm signal is issued.

[0038] In this embodiment, the calculation formula and data for the compensation accuracy of the above calibration algorithm are used to obtain: y=0.0008870266x3-0.0271713049x2+1.1724086373x-0.0132508017 Figure 5 In the diagram, the vertical axis corresponds to energy, with the unit being J, and the horizontal axis corresponds to the number of energy value points. In this embodiment, 10 energy value points are used for calibration. Figure 4 In the graph, the horizontal axis corresponds to time, and the vertical axis corresponds to power.

[0039] Specifically, the first operational amplifier unit and the second operational amplifier unit mentioned in this application constitute a first operational amplifier chip, which is disposed on the circuit of the power monitoring module; the third operational amplifier unit, the fourth operational amplifier unit, the fifth operational amplifier unit and the sixth operational amplifier unit constitute a second operational amplifier chip, which is disposed on the circuit of the power acquisition module.

[0040] The technical means disclosed in this invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications are also considered within the scope of protection of this invention.

Claims

1. A detection system for detecting the energy of an emitted laser, characterized in that, include: A power detection component includes several monitoring units; each monitoring unit includes a laser emitter and a power monitoring module connected in sequence; each power monitoring module can acquire optical signals and convert them into analog signals; The power acquisition component includes a power acquisition module that processes analog signals. The power acquisition module is electrically connected to several monitoring units to acquire and calibrate analog signal data transmitted by the several monitoring units. The host computer; the power acquisition module is electrically connected to the host computer, and the power acquisition module transmits the calibrated analog signal data to the host computer, stores it, and determines whether there is an abnormality.

2. The detection system for detecting the energy of the emitted laser head according to claim 1, characterized in that, The power monitoring module is equipped with a PD photodiode for acquiring laser light signals and converting them into analog signals; Each of the power monitoring modules is equipped with a DB9 output interface, and each power monitoring module transmits data to the DB9 receiving interface of the power acquisition module through the corresponding DB9 output interface.

3. The detection system for detecting the energy of the emitted laser head according to claim 2, characterized in that, The power monitoring module includes a first operational amplifier chip, a first RC parallel circuit, a first potentiometer, and a second RC parallel circuit.

4. The detection system for detecting the energy of the emitted laser head according to claim 2, characterized in that, The power acquisition module includes a second operational amplifier chip and a third RC parallel circuit.

5. The detection system for detecting the laser energy of the output head according to claim 3, characterized in that, The first operational amplifier chip includes a first operational amplifier unit and a second operational amplifier unit; The first operational amplifier unit is a transimpedance amplifier, and the second operational amplifier unit is an inverting proportional amplifier; The output terminal of the first operational amplifier unit is connected to one end of the first RC parallel circuit, the inverting input terminal of the first operational amplifier unit is connected to the other end of the first RC parallel circuit, and the non-inverting input terminal of the first operational amplifier unit is connected to the cathode of the photodiode PD, and the anode of the photodiode PD is grounded. The output terminal of the first operational amplifier unit is connected to the inverting input terminal of the first operational amplifier unit via resistor R2; the voltage divider network composed of the first potentiometer VR1 and resistor R3 provides DC bias for the second operational amplifier unit; The inverting input terminal of the second operational amplifier unit is connected to one end of the second RC parallel circuit, and the output terminal of the second operational amplifier unit is connected to the other end of the second RC parallel circuit; the non-inverting input terminal of the second operational amplifier unit is grounded.

6. The detection system for detecting the energy of the emitted laser head according to claim 4, characterized in that, The second operational amplifier chip includes a third operational amplifier unit, a fourth operational amplifier unit, a fifth operational amplifier unit, and a sixth operational amplifier unit; The third operational amplifier unit is a differential signal input terminal, the fourth operational amplifier unit is a voltage follower circuit, the fifth operational amplifier unit is a subtractor, and the sixth operational amplifier unit is an inverting proportional amplifier. The positive input terminal (ADC IN V1+) is connected to the non-inverting input terminal of the third operational amplifier unit via resistor R6, and the negative input terminal (ADC IN V1-) is connected to the inverting input terminal of the third operational amplifier unit via resistor R8; the non-inverting input terminal of the third operational amplifier unit is grounded via resistor R5, the inverting input terminal of the third operational amplifier unit is connected to the output terminal of the third operational amplifier unit via resistor R10, and the output terminal of the third operational amplifier unit is connected to the inverting input terminal of the sixth operational amplifier unit via resistor R7. The reference voltage input (REF 4.5V) is connected to the non-inverting input of the fourth operational amplifier unit via resistor R47. The inverting input of the fourth operational amplifier unit is connected to its output. The output of the fourth operational amplifier unit is connected to the non-inverting input of the sixth operational amplifier unit via resistor R45. The non-inverting input of the sixth operational amplifier unit is grounded via resistor R46. The inverting input of the sixth operational amplifier unit is connected to its output via resistor R9. The output terminal of the sixth operational amplifier unit is connected to the inverting input terminal of the fifth operational amplifier unit via resistor R48, and the non-inverting input terminal of the fifth operational amplifier unit is grounded; a third RC parallel circuit consisting of resistor R59 and capacitor C71 is connected between the inverting input terminal and the output terminal of the fifth operational amplifier unit; the output terminal of the fifth operational amplifier unit is connected to the output terminal (ADC IN V3) via resistor R62, and the output terminal is grounded via capacitor C13.

7. The detection system for detecting the energy of the emitted laser head according to claim 5, characterized in that, The second RC parallel circuit includes a capacitor C4, a resistor R4, and a second potentiometer VR2.

8. The detection system for detecting the energy of the emitted laser head according to claim 1, characterized in that, The number of monitoring units is three.

9. A detection method for detecting the energy of an emitted laser, comprising the detection system for detecting the energy of an emitted laser as described in any one of claims 1 to 8, characterized in that, Specifically, the following steps are included: Step S100: Install the power monitoring module at the laser emitter head. When the laser emitter head outputs laser light, the PD photodiode collects the laser light signal and converts it into an analog signal. The analog signal data is then transmitted to the power acquisition module to complete the signal acquisition. In step S200, the power acquisition module processes the received analog signal, calculates the laser energy using an integration algorithm, restores the real-time power, and then compensates for the accuracy using a calibration algorithm to complete the processing of the analog signal. In step S300, the power acquisition module sends the calculated laser power and energy data to the PC host computer to complete the data transmission. Step S400: The host computer stores and judges the data; If the data exceeds the preset alarm threshold K, an anomaly alert will be issued. If the data is below the preset alarm threshold K, then the real-time monitoring of the data is completed.

10. The detection method for detecting the energy of an emitted laser head according to claim 9, characterized in that, In step S200, the power acquisition module processes the received analog signal, records the true energy value E1, calculates the laser energy value E through an integration algorithm, and obtains the calibrated laser energy calibration value Ej by compensating for the accuracy through a calibration algorithm. The integral algorithm calculation formula is as follows: E = (P1 + P2 + P3 + ... + Pn) × Δt Where Δt is the time slice; Time slice Δt = pulse width T / number of acquisitions N; P1 is the power corresponding to t1, P2 is the power corresponding to t2, P3 is the power corresponding to t3, and Pn is the power corresponding to tn. The formula for calculating the compensation accuracy of the calibration algorithm is as follows: Ej = E×a³ + E×b² + E×c + d Where a, b, c, and d are fitting parameters, E is the laser energy, and Ej is the laser energy calibration value.

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