A method and apparatus for testing detonation based on laser technology

Abstract

The application discloses a detonation test method and device based on laser technology in the technical field of detonation experiment test, S1, detonation ignition, makes the flyer pass through the first observation point, the second observation point and the third observation point in turn; S2, laser Doppler effect monitoring, wavelength change data when the laser beam irradiates the flyer is acquired through the end laser interferometer; then the first observation point, the second observation point and the third observation point respectively emit positioning laser beams to carry out again Doppler effect monitoring on the passing flyer, positioning wavelength change data is obtained; S3, the time when the flyer passes through each observation point is determined, the corresponding flying time and passing time of the flyer under the first observation point, the second observation point and the third observation point are obtained based on the wavelength change data and the positioning wavelength change data; then the passing time is corrected based on the flying time; so as to eliminate the cumulative error, make the obtained experimental data more accurate, and facilitate the accurate prediction of the speed of the flyer.

Description

Technical Field

[0001] This invention belongs to the field of detonation experimental testing technology, specifically a detonation testing method and device based on laser technology. Background Technology

[0002] Detonation is a chemical reaction transport process accompanied by the release of a large amount of energy. Testing the change of the free surface velocity of a flying plate over time under the action of a shock wave or detonation wave can provide a full understanding of detonation physics experiments.

[0003] Existing testing techniques include high-speed photography, electrical probe microanalysis, X-ray flash photography, and laser interferometry. Among these, laser interferometry is widely used in detonation experiments due to its non-disturbance to moving objects and high measurement accuracy. However, because laser interferometry is based on the data of light wavelength changes during the movement of the flying plate, subsequent errors can easily accumulate. Furthermore, when the flying plate speed is too high, the frequency of the laser signal may exceed the system's receiving frequency, leading to data loss during measurement and thus inaccurate measurement of the flying plate speed. Summary of the Invention

[0004] To address the aforementioned problems, the present invention aims to provide a detonation testing method and apparatus based on laser technology, which makes the experimental data more accurate and facilitates precise prediction of the velocity of the flying blade.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows: A detonation test method based on laser technology includes the following steps: S1, detonation ignition, detonation phenomenon occurs through the ignition mechanism at the initial point, and the impact force generated by the detonation causes the flying piece to pass through the first observation point, the second observation point and the third observation point in sequence; S2. Laser Doppler effect monitoring: A laser beam is emitted from the laser at the endpoint to irradiate the flying plate, and the wavelength change data of the reflected laser beam is obtained by the laser interferometer at the endpoint. By emitting positioning laser beams from the first, second, and third observation points respectively, the Doppler effect of the passing flying plate is monitored again, and the positioning wavelength change data of the reflected positioning laser waves corresponding to the first, second, and third observation points are obtained. S3. The time it takes for the flying piece to pass through each observation point is determined. Based on the wavelength change data, the flight time of the flying piece at the first, second, and third observation points is obtained. Then, based on the positioning wavelength change data corresponding to the first, second, and third observation points, the transit time of the flying piece is obtained. The flight time is corrected based on the elapsed time to obtain the passage time corresponding to the first observation point, the second observation point, and the third observation point. Based on the passage time and the distance between the initial point, the first observation point, the second observation point, the third observation point, and the endpoint, the velocity and acceleration corresponding to the first observation point, the second observation point, the third observation point, and the endpoint are obtained.

[0006] The above scheme achieves the following beneficial effects: In monitoring, the laser interferometer confirms the data based on the change of light wavelength during the movement of the flying plate. The continuous accumulation of data will generate cumulative errors over time, and the long data acquisition process will make the acquired data inaccurate, resulting in measurement errors. The positioning laser beam is monitored again by the laser interferometers corresponding to the first, second, and third observation points to confirm the transit time of the flying piece at the first, second, and third observation points. The transit time can be used to predict the time interval of the flying piece passing through the first, second, and third observation points. By specifically analyzing the positioning wavelength change data within the time interval, the transit time of the flying piece corresponding to the first, second, and third observation points can be made more accurate. The flight time is then corrected by adjusting the time elapsed to eliminate accumulated errors, making the experimental data more accurate and facilitating precise prediction of the speed of the flying plate.

[0007] Furthermore, in S2 and S3, when the flying piece passes through the first observation point, the second observation point, and the third observation point, the first observation point, the second observation point, and the third observation point will also emit auxiliary beams to the photodetector at the initial point to locate the first observation point, the second observation point, or the third observation point, based on the elapsed time. The transit time of the flying piece is obtained based on the confirmation time of the auxiliary beams corresponding to the first, second, and third observation points received by the photodetector, and the positioning wavelength change data corresponding to the first, second, and third observation points. The data transmission time corresponding to the first, second, and third observation points is determined based on the difference between the confirmation time and the transit time, and the data transmission time is used to correct the transit time and the transit time.

[0008] Beneficial effects: The confirmation time corresponding to the first, second, and third observation points is determined based on the generation of the auxiliary beam, which facilitates the re-correction of the transit time of the flying plate passing through the first, second, and third observation points. The data transmission time corresponding to the first, second, and third observation points is determined by the difference between the confirmation time and the transit time. Since there will be a certain time error in data generation, transmission, and reception, confirming the time error based on the data transmission time can make the transit time and pass time more accurate.

[0009] Furthermore, in S2, the timing of the positioning laser beams emitted from the first, second, and third observation points is also controlled. The specific steps are as follows: The positioning laser beam at the first observation point is continuously irradiated. Based on the flight time corresponding to the flight of the flying piece passing through the first observation point, the first flight speed and the first flight acceleration corresponding to the flight time are obtained. Based on the first flight speed and the first flight acceleration, the first estimated time corresponding to the flight of the flying piece passing through the second observation point is obtained. Based on the wavelength change data at the current time, the estimated travel distance of the first flying piece is converted. Based on the first standard distance between the second observation point and the initial point, the first difference between the first standard distance and the estimated travel distance of the first flying piece is calculated. Based on the first difference, flight speed and flight acceleration, the first estimated time is corrected to obtain the start time corresponding to the second observation point. Based on the flight time of the flying piece passing through the second observation point, the second flight speed and the second flight acceleration corresponding to that flight time are obtained. Based on the second flight speed and the second flight acceleration, the second estimated time of the flying piece passing through the third observation point is obtained. Then, based on the wavelength change data at the current time, the estimated travel distance of the second flying piece is converted. Based on the second standard distance between the third observation point and the initial point, the second difference between the second standard distance and the estimated travel distance of the flying piece is calculated. Based on the second difference, the second flight speed and the second flight acceleration, the second estimated time is corrected to obtain the start time corresponding to the third observation point.

[0010] Beneficial effects: By predicting the timing of the positioning laser beams emitted from the first, second, and third observation points, interference caused by different positioning laser beams and the simultaneous generation and superposition of laser beams can be reduced, making it easier for the laser interferometers corresponding to the first, second, third, and endpoint points to obtain wavelength change data of the reflected laser beams. It can also reduce power loss and the generation of redundant data when the first, second, and third observation points are working for a long time.

[0011] Furthermore, the positioning laser beam is perpendicular to the laser beam, and the laser beam is parallel to the auxiliary beam.

[0012] Beneficial effects: The positioning laser beam is perpendicular to the laser beam to reduce mutual interference when the positioning laser beam and the laser beam are used for Doppler effect monitoring, which facilitates the acquisition of experimental data of the flying plate; the laser beam and the auxiliary beam are parallel to each other, which facilitates the photodetector to receive the auxiliary beam.

[0013] Furthermore, in S1 to S3, the illumination intensity of the laser beam or positioning laser beam at the first observation point, the second observation point, the third observation point, and the endpoint is different, and the illumination intensity of the laser beam corresponding to the endpoint, the first observation point, the second observation point, and the third observation point shows a gradually increasing trend.

[0014] Beneficial effect: By varying the intensity of light, the brightness of the laser beam or positioning laser beam can be differentiated.

[0015] Furthermore, the photodetector distinguishes the laser beams or positioning laser beams corresponding to the first observation point, the second observation point, the third observation point, and the endpoint based on changes in different light intensities.

[0016] Beneficial effects: Based on changes in light intensity, the photodetector facilitates the differentiation of laser beams or positioning laser beams at the first, second, third, and final observation points. This allows for the determination of the confirmation time for the illumination at the first, second, and third observation points. The elapsed time is then corrected based on the confirmation time, resulting in more accurate experimental data.

[0017] Furthermore, a laser-based detonation testing device, used in the laser-based detonation testing method, includes an initial point, a first observation point, a second observation point, a third observation point, and an end point arranged sequentially from left to right; The initial point is equipped with an ignition mechanism for detonating and propelling the flying plate, and above the ignition mechanism is a photoelectric detector for real-time monitoring of light intensity. The endpoint is equipped with a laser for emitting a laser beam to irradiate the flyer plate, and a laser interferometer for receiving wavelength change data of the reflected laser beam. The first, second, and third observation points are all equipped with a positioning laser for emitting a positioning laser beam to re-irradiate the flying plate, and a positioning laser interferometer for receiving wavelength change data of the reflected laser beam. The positioning laser has a refracting mirror inside to reflect the auxiliary beam of the positioning laser beam.

[0018] Beneficial effects: The cooperation between the laser at the endpoint and the laser interferometer facilitates the detection of the overall motion of the flying piece and the analysis of the changes in the motion of the flying piece at different time periods. By coordinating the positioning lasers and positioning laser interferometers at the first, second, and third observation points, it is easy to judge the local movement of the flying piece. At the same time, by illuminating the photodetector at the initial point with an auxiliary beam, it is easy to confirm the data transmission time corresponding to the first, second, and third observation points, and to confirm the distance between the first, second, and third observation points and the initial point, so as to correct the time and elapsed time.

[0019] Furthermore, the laser wavelength of the laser or positioning laser is 450-550nm, and the linewidth is 4.0-6.0MHz.

[0020] Beneficial effects: Laser wavelengths of 450-550nm with linewidths of 4.0-6.0MHz are easy to observe. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a laser-based detonation testing device according to an embodiment of the present invention.

[0022] Figure 2 This is a schematic flowchart of a laser-based detonation testing method according to an embodiment of the present invention. Detailed Implementation

[0023] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings include: ignition mechanism 1, first observation point 2, first positioning laser 21, first positioning laser beam 22, first positioning laser interferometer 23, second observation point 3, second positioning laser 31, second positioning laser beam 32, second positioning laser interferometer 33, third observation point 4, third positioning laser 41, third positioning laser beam 42, third positioning laser interferometer 43, laser 5, laser interferometer 51, laser beam 52, auxiliary beam 6, and photodetector 7.

[0024] Example 1 The basic implementation examples are as follows: Figures 1 to 2 As shown: A detonation test method based on laser technology includes the following steps: S1, detonation ignition, a detonation phenomenon is generated by the ignition mechanism 1 at the initial point, and the impact force generated by the detonation causes the flying piece to pass through the first observation point 2, the second observation point 3 and the third observation point 4 in sequence. S2. Laser Doppler effect monitoring: The laser beam 52 emitted by the laser 5 at the endpoint is used to irradiate the flying plate, and the wavelength change data reflected by the laser beam 52 is obtained by the laser interferometer 51 at the endpoint. Positioning laser beams 52 are emitted from the first observation point 2, the second observation point 3, and the third observation point 4 respectively to perform Doppler effect monitoring on the passing flying plate again, and obtain the positioning wavelength change data of the reflected positioning laser waves corresponding to the first observation point 2, the second observation point 3, and the third observation point 4; and the positioning laser beams 52 are perpendicular to each other. S3. The time it takes for the flying piece to pass through each observation point is determined. Based on the wavelength change data, the flight time of the flying piece at the first observation point 2, the second observation point 3, and the third observation point 4 is obtained. Then, based on the positioning wavelength change data corresponding to the first observation point 2, the second observation point 3, and the third observation point 4, the transit time of the flying piece is obtained. The flight time is corrected based on the elapsed time to obtain the passing time corresponding to the first observation point 2, the second observation point 3, and the third observation point 4. Based on the passing time and the distance between the initial point, the first observation point 2, the second observation point 3, the third observation point 4 and the endpoint, the velocities and accelerations corresponding to the first observation point 2, the second observation point 3, the third observation point 4 and the endpoint are obtained.

[0025] During monitoring, the laser interferometer 51 confirms the data based on the change in light wavelength during the movement of the flying plate. The continuous accumulation of data will generate cumulative errors over time, and the long data acquisition process will make the acquired data inaccurate, resulting in measurement errors. The cooperation between the laser 5 at the endpoint and the laser interferometer 51 facilitates the detection of the overall motion of the flying piece and the analysis of the changes in the motion of the flying piece at different time periods. The cooperation between the positioning laser 5 and the positioning laser interferometer 51 at the first observation point 2, the second observation point 3 and the third observation point 4 facilitates the judgment of the local motion of the flying piece, making the obtained experimental data richer and more comprehensive.

[0026] The positioning laser beam 52 is monitored again by the laser interferometer 51 corresponding to the first observation point 2, the second observation point 3, and the third observation point 4 to confirm the passing time of the flying piece at the first observation point 2, the second observation point 3, and the third observation point 4. The time interval of the flying piece passing through the first observation point 2, the second observation point 3, and the third observation point 4 can be predicted by the flight time. By specifically analyzing the positioning wavelength change data within the time interval, the passing time of the flying piece corresponding to the first observation point 2, the second observation point 3, and the third observation point 4 can be made more accurate. The flight time is then corrected by adjusting the time elapsed to eliminate accumulated errors, making the experimental data more accurate and facilitating precise prediction of the speed of the flying plate.

[0027] Example 2 The difference from the above embodiments is that, in S2 and S3, when the flying piece passes through the first observation point 2, the second observation point 3 and the third observation point 4, the first observation point 2, the second observation point 3 and the third observation point 4 will also emit auxiliary beams 6 to the photodetector 7 at the initial point to locate the first observation point 2, the second observation point 3 or the third observation point 4 based on the elapsed time, and the laser beam 52 and the auxiliary beam 6 are parallel to each other. Based on the confirmation time of the auxiliary beam 6 corresponding to the first observation point 2, the second observation point 3 and the third observation point 4 received by the photodetector 7, and the positioning wavelength change data corresponding to the first observation point 2, the second observation point 3 and the third observation point 4, the transit time of the flying piece is obtained. Based on the difference between the confirmation time and the transit time, the data transmission time corresponding to the first observation point 2, the second observation point 3 and the third observation point 4 is determined, and the data transmission time is used to correct the transit time and the transit time.

[0028] The confirmation time corresponding to the first observation point 2, the second observation point 3, and the third observation point 4 is determined by the generation of the auxiliary beam 6. This facilitates the re-correction of the transit time of the flying piece passing through the first observation point 2, the second observation point 3, and the third observation point 4. The data transmission time corresponding to the first observation point 2, the second observation point 3, and the third observation point 4 is determined by the difference between the confirmation time and the transit time. Since there will be a certain time error in data generation, transmission, and reception, confirming the time error based on the data transmission time can make the transit time and the passing time more accurate.

[0029] Example 3 The difference from the above embodiment is that, in S2, the timing of the positioning laser beams 52 emitted from the first observation point 2, the second observation point 3, and the third observation point 4 is also controlled. The specific steps are as follows: The positioning laser beam 52 at the first observation point 2 continues to illuminate the first observation point 2. Based on the flight time of the flying piece passing through the first observation point 2, the first flight speed and the first flight acceleration corresponding to the flight time are obtained. Based on the first flight speed and the first flight acceleration, the first estimated time of the flying piece passing through the second observation point 3 is obtained. Based on the wavelength change data at the current time, the estimated travel distance of the first flying piece is converted. Based on the first standard distance between the second observation point 3 and the initial point, the first difference between the first standard distance and the estimated travel distance of the first flying piece is calculated. Based on the first difference, flight speed and flight acceleration, the first estimated time is corrected to obtain the start time corresponding to the second observation point 3. Based on the flight time of the flying piece passing through the second observation point 3, the second flight speed and the second flight acceleration corresponding to that flight time are obtained. Based on the second flight speed and the second flight acceleration, the second estimated time of the flying piece passing through the third observation point 4 is obtained. Based on the wavelength change data at the current time, the estimated travel distance of the second flying piece is converted. Based on the second standard distance between the third observation point 4 and the initial point, the second difference between the second standard distance and the estimated travel distance of the flying piece is calculated. Based on the second difference, the second flight speed, and the second flight acceleration, the second estimated time is corrected to obtain the start-up time corresponding to the third observation point 4. By predicting the timing of the positioning laser beams 52 emitted from the first observation point 2, the second observation point 3, and the third observation point 4, the interference caused by different positioning laser beams 52 and the simultaneous generation and superposition of laser beams 52 can be reduced, which facilitates the wavelength change data of the laser beams 52 reflected by the laser interferometers 51 corresponding to the first observation point 2, the second observation point 3, the third observation point 4, and the endpoint. It can also reduce the power loss and the generation of redundant data generated during the long-term operation of the first observation point 2, the second observation point 3, and the third observation point 4.

[0030] Example 4 The difference from the above embodiment is that, in S1 to S3, the light intensity of the laser beam 52 or positioning laser beam 52 at the first observation point 2, the second observation point 3, the third observation point 4 and the endpoint is different, and the light intensity of the laser beam 52 corresponding to the endpoint, the first observation point 2, the second observation point 3 and the third observation point 4 shows a gradually increasing trend. The photodetector 7 distinguishes the corresponding first observation point 2, second observation point 3, third observation point 4 and the endpoint laser beam 52 or positioning laser beam 52 based on the changes in different light intensities.

[0031] The photodetector 7, based on the change in light intensity, facilitates the differentiation of the laser beam 52 or positioning laser beam 52 at the first observation point 2, the second observation point 3, the third observation point 4, and the endpoint. This allows for the determination of the confirmation time corresponding to the irradiation at the first observation point 2, the second observation point 3, and the third observation point 4. The elapsed time is then corrected based on the confirmation time, thereby obtaining more accurate experimental data.

[0032] Example 5 The difference from the above embodiments is that a detonation testing device based on laser technology, according to the above-mentioned detonation testing method based on laser technology, includes an initial point, a first observation point 2, a second observation point 3, a third observation point 4 and an end point arranged from left to right. The initial point is equipped with an ignition mechanism 1 for generating a detonation to propel the flying plate, and above the ignition mechanism 1 is a photoelectric detector 7 for real-time monitoring of light intensity. The endpoint is equipped with a laser 5 for emitting a laser beam 52 to irradiate the flying plate, and a laser interferometer 51 for receiving wavelength change data reflected from the laser beam 52. The first observation point 2, the second observation point 3, and the third observation point 4 are all equipped with a positioning laser 5 for emitting a positioning laser beam 52 to irradiate the flying piece again, and a positioning laser interferometer 51 for receiving wavelength change data reflected by the laser beam 52. A first positioning laser 21 is provided above the first observation point 2, and a first positioning laser interferometer 23 is provided below the first observation point 2. A second positioning laser 31 is provided above the second observation point 3, and a second positioning laser interferometer 33 is provided below the second observation point 3. A third positioning laser 41 is installed above the third observation point 4, and a third positioning laser interferometer 43 is installed below the third observation point 4. The positioning laser 5 is equipped with a refracting mirror for reflecting the auxiliary beam 6 of the positioning laser beam 52; The laser wavelength of laser 5 or positioning laser 5 is 450-550nm, and the linewidth is 4.0-6.0MHz.

[0033] The detonation testing device in this embodiment has the same beneficial effects as the detonation testing method based on laser technology described above, and will not be repeated here.

[0034] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific structures and / or characteristics in the solutions are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A detonation testing method based on laser technology, characterized in that, Includes the following steps: S1, Detonation ignition: Detonation occurs through the ignition mechanism at the initial point. The impact force generated by the detonation causes the flying piece to pass through the first observation point, the second observation point, and the third observation point in sequence. S2. Laser Doppler effect monitoring: A laser beam is emitted from the laser at the endpoint to irradiate the flying plate, and the wavelength change data of the reflected laser beam is obtained by the laser interferometer at the endpoint. By emitting positioning laser beams from the first, second, and third observation points respectively, the Doppler effect of the passing flying plate is monitored again, and the positioning wavelength change data of the reflected positioning laser waves corresponding to the first, second, and third observation points are obtained. S3. The time it takes for the flying piece to pass through each observation point is determined. Based on the wavelength change data, the flight time of the flying piece at the first, second, and third observation points is obtained. Then, based on the positioning wavelength change data corresponding to the first, second, and third observation points, the transit time of the flying piece is obtained. The flight time is corrected based on the elapsed time to obtain the passage time corresponding to the first observation point, the second observation point, and the third observation point. Based on the passage time and the distance between the initial point, the first observation point, the second observation point, the third observation point, and the endpoint, the velocity and acceleration corresponding to the first observation point, the second observation point, the third observation point, and the endpoint are obtained. In S2 and S3, when the flying piece passes through the first observation point, the second observation point, and the third observation point, the first observation point, the second observation point, and the third observation point will also emit auxiliary beams to the photodetector at the initial point to locate the first observation point, the second observation point, or the third observation point, based on the elapsed time. Based on the confirmation time of the auxiliary beams corresponding to the first observation point, the second observation point, and the third observation point received by the photodetector, and the positioning wavelength change data corresponding to the first observation point, the transit time of the flying piece is obtained. Based on the difference between the confirmation time and the transit time, the data transmission time corresponding to the first observation point, the second observation point, and the third observation point is determined, and the data transmission time is used to correct the transit time and the transit time. The positioning laser beam is perpendicular to the laser beam, and the laser beam is parallel to the auxiliary beam.

2. The detonation testing method based on laser technology according to claim 1, characterized in that: In S2, the timing of the positioning laser beams emitted from the first, second, and third observation points is also controlled. The specific steps are as follows: The positioning laser beam at the first observation point is continuously irradiated. Based on the flight time corresponding to the flight of the flying piece passing through the first observation point, the first flight speed and the first flight acceleration corresponding to the flight time are obtained. Based on the first flight speed and the first flight acceleration, the first estimated time corresponding to the flight of the flying piece passing through the second observation point is obtained. Based on the wavelength change data at the current time, the estimated travel distance of the first flying piece is converted. Based on the first standard distance between the second observation point and the initial point, the first difference between the first standard distance and the estimated travel distance of the first flying piece is calculated. Based on the first difference, flight speed and flight acceleration, the first estimated time is corrected to obtain the start time corresponding to the second observation point. Based on the flight time of the flying piece passing through the second observation point, the second flight speed and the second flight acceleration corresponding to that flight time are obtained. Based on the second flight speed and the second flight acceleration, the second estimated time of the flying piece passing through the third observation point is obtained. Then, based on the wavelength change data at the current time, the estimated travel distance of the second flying piece is converted. Based on the second standard distance between the third observation point and the initial point, the second difference between the second standard distance and the estimated travel distance of the flying piece is calculated. Based on the second difference, the second flight speed and the second flight acceleration, the second estimated time is corrected to obtain the start time corresponding to the third observation point.

3. The detonation testing method based on laser technology according to claim 1, characterized in that: In S1 to S3, the illumination intensity of the laser beam or positioning laser beam at the first observation point, the second observation point, the third observation point and the endpoint are different. The illumination intensity of the laser beam corresponding to the endpoint, the first observation point, the second observation point and the third observation point shows a gradually increasing trend.

4. The detonation test method based on laser technology according to claim 1 or 3, characterized in that: The photodetector distinguishes the laser beams or positioning laser beams corresponding to the first observation point, the second observation point, the third observation point, and the endpoint based on changes in different light intensities.

5. A detonation testing device based on laser technology, characterized in that: The laser-based detonation testing device according to any one of claims 1-4 includes an initial point, a first observation point, a second observation point, a third observation point, and an end point arranged sequentially from left to right. The initial point is equipped with an ignition mechanism for detonating and propelling the flying plate, and above the ignition mechanism is a photoelectric detector for real-time monitoring of light intensity. The endpoint is equipped with a laser for emitting a laser beam to irradiate the flyer plate, and a laser interferometer for receiving wavelength change data of the reflected laser beam. The first, second, and third observation points are all equipped with a positioning laser for emitting a positioning laser beam to re-irradiate the flying plate, and a positioning laser interferometer for receiving wavelength change data of the reflected laser beam. The positioning laser has a refracting mirror inside to reflect the auxiliary beam of the positioning laser beam.

6. The detonation testing device based on laser technology according to claim 5, characterized in that: The laser wavelength of the laser or positioning laser is 450-550nm, and the linewidth is 4.0-6.0MHz.

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