A laser action time measuring device and method adaptable to multiple scenes

Abstract

The application discloses a kind of laser action time measuring device and method that can adapt to multiple scenes, including target plate, cutoff plate, laser detection module, main control timing system, target plate and cutoff plate are placed on the light path of laser equipment, laser detection module is placed before target plate and cutoff plate respectively, converts into electrical signal after sensing optical signal, and data is transmitted to main control timing system by wired or wireless mode, main control timing system analyzes and processes the data transmitted, and records corresponding action time, calculates the action time of each target plate acted by laser.The time data is measured by using laser detection module and main control timing system to cooperate, to realize multiple scenes, multiple level performance test.Through data processing and sending of detected optical signal, the transmission of device laser signal action related data is realized.The information sent by each laser detection module is loaded and processed by main control timing system, so that the action time can be accurately measured, and the performance of the device is verified.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laser action ability test, in particular to a laser action time measuring device and method suitable for multiple scenes, and especially to a timing device suitable for multiple scenes and capable of being used in combination. BACKGROUND

[0002] In recent years, laser-related equipment has developed rapidly. In measuring the action time, artificial timing is usually used, and then a video monitoring system and manual remote interpretation are used. However, with the development of laser-related equipment in the future, the monitoring image may be overexposed, leading to an increase in measurement error and difficulty, and the device cannot adapt to future use.

[0003] In the traditional timing method, the following factors can reduce the accuracy of the laser action time: video transmission rate, tester reaction speed, camera placement position, and handheld stopwatch error. Using a laser detection module to sense the laser signal and record the action time solves the problem of low accuracy in the traditional measurement method. Wired or wireless communication technology can be used to realize data transmission of multiple measurement devices, reduce line connections, and make the measurement device more easily combined with space occasions. SUMMARY

[0004] The present application provides a laser action time measuring device and method suitable for multiple scenes, which can accurately capture the action time of laser equipment acting on the target plate and passing through the target plate, realize rapid and accurate measurement of the laser action time, and reduce the error of the traditional measurement method. At the same time, the device can be flexibly combined, easy to install and maintain.

[0005] To achieve the above object, the present application adopts the following technical scheme:

[0006] A laser action time measuring device suitable for multiple scenes is used to assist in performance testing and action performance verification of laser-related equipment, which includes a target plate, a cutoff plate, a laser detection module, and a main control timing system. The target plate and the cutoff plate are placed in the light path of the laser equipment. The laser detection module is placed in front of the target plate and the cutoff plate, respectively, and is connected to the main control timing system. After sensing the optical signal, it is converted into an electrical signal and transmitted to the main control timing system through wired or wireless means. The main control timing system analyzes and processes the transmitted data, records the corresponding action time, and calculates the action time of the laser acting on each target plate.

[0007] As a preferred embodiment of the above scheme, one or more target plates are placed in the light path of the laser equipment in turn, and the cutoff plate is placed at the end of the target plate. A laser detection module is placed in front of each target plate and cutoff plate.

[0008] As the preferred of the above scheme, the laser detection module comprises a photodetector, a signal processing unit and a communication unit, the photodetector is provided with a laser signal sensing area, the photodetector is connected with the signal processing unit, and the signal processing unit is connected with the communication unit.

[0009] As the preferred of the above scheme, the laser signal sensing area on the photodetector is additionally provided with a stray light filter and a power attenuation sheet to filter out stray light interference and attenuate laser energy, so that the test equipment can accurately sense the laser signal and is not damaged by the laser energy.

[0010] As the preferred of the above scheme, the master control timing system comprises a data receiving unit, a signal processing unit, a timing unit, a display unit and a data storage unit which are connected with each other.

[0011] A laser action time measurement method suitable for multiple scenes comprises the following steps:

[0012] S1. Arranging a test scene, placing the laser detection module in front of the target plate and the cutoff plate respectively, adjusting the sensing area position of the laser detection module, and emitting laser to the starting target plate according to the predetermined direction by the laser equipment, based on the principle of diffuse reflection of light, the laser is diffusely reflected to the laser signal sensing area of the laser detection module;

[0013] S2. After filtering and attenuating the light signal through the sensing area, the laser detection module senses the light signal, converts it into an electric signal, outputs the electric signal, and then sends the electric signal data to the master control timing system through wireless or wired mode;

[0014] S3. After receiving the data transmitted by the laser detection module, the master control timing system analyzes and processes it, and records the corresponding time;

[0015] S4. When the laser penetrates the starting target plate and acts on the next target plate or cutoff plate, the next laser detection module and the master control timing system can be triggered to display and record the time in real time;

[0016] S5. The laser action time can be obtained by combining the front and rear end recording time of the target plate.

[0017] As the preferred of the above scheme, in step S1, the distance between the laser detection module and the target plate and the cutoff plate should be greater than the critical distance, so as to ensure that the photodetector sensing area can quickly and effectively sense the diffuse reflection light and is not damaged by the laser.

[0018] As the preferred of the above scheme, in step S3, the master control real-time monitors the received electric signal, records the corresponding time when the electric signal is greater than the preset value, and continues to monitor when the electric signal is lower than the preset value.

[0019] As the preferred solution of the above scheme, in step S4, when the laser can act on the target plate and the cutoff plate in turn, the i-th laser detection module in front of them can diffuse and reflect the light signal to the electric signal, and the action time t is recorded by the monitoring of the main control timing system i .

[0020] As the preferred solution of the above scheme, in step S5, the main control timing system can obtain the actual action time of the target plate by data processing according to the time recorded by the electric signal size.

[0021] Due to the above structure, the application has the following advantages:

[0022] The application uses the diffuse reflection of light and photovoltaic effect to judge the laser action time and calculate the actual action time between the two by filtering the light signal and converting the photoelectric signal. The combination of multiple laser detection modules and multiple target plates with different materials can realize the index measurement of the action effect of different laser devices. The combination of various components can realize the measurement of open and narrow areas. The combination of the designed timing device and different types of target plates can realize the action performance test of static and dynamic targets. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description.

[0024] Figure 1 The device layout of the application;

[0025] Figure 2 The method flowchart of the application;

[0026] Figure 3 The diffuse reflection diagram of the application. DETAILED DESCRIPTION

[0027] The technical solutions of the application will be described clearly and completely in combination with the drawings of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the application.

[0028] As Figure 1As shown, the embodiment provides a laser action time measuring device adaptable to multiple scenes, which is used for assisting performance test and action performance verification of laser related equipment, and comprises a target plate, a cutoff plate, a laser detection module and a main control timing system, the target plate and the cutoff plate are arranged on the light path of the laser equipment, the laser detection module is arranged in front of the target plate and the cutoff plate respectively, and is connected with the main control timing system, converts the optical signal into an electrical signal after sensing the optical signal, and transmits data to the main control timing system through a wired or wireless mode, the main control timing system analyzes and processes the transmitted data, and records the corresponding action time and calculates the action time of the laser on each target plate.

[0029] In the embodiment, the target plate and the cutoff plate are used as laser action targets, and multiple target plates and cutoff plates can be arranged according to needs, the size and thickness parameters of the target plate and the cutoff plate can be determined according to actual needs, so as to realize the test of the action performance of different laser equipment.

[0030] In the embodiment, one or more target plates are arranged on the light path of the laser equipment in turn, and a cutoff plate is arranged at the end of the target plate, and a laser detection module is arranged in front of each target plate and cutoff plate. Specifically, when the energy of the laser equipment is relatively low and the laser equipment has the ability to damage small targets (i.e. one target plate), only one target plate and one cutoff plate need to be arranged on the light path of the laser equipment in turn, and a laser detection module is arranged in front of each target plate and cutoff plate, so as to measure the laser action time of the laser equipment; when the energy of the laser equipment is high and the laser equipment can damage large targets (i.e. multiple target plates), multiple target plates can be arranged on the light path of the laser equipment in turn, and a cutoff plate is arranged at the end of the target plate, and a laser detection module is arranged in front of each target plate and cutoff plate, so as to measure the penetration time under each energy level (such as first level, second level, third level, …), i.e. to measure the time of each energy level penetrating small to large targets.

[0031] In the embodiment, the laser detection module comprises a photodetector, a signal processing unit and a communication unit, the photodetector is provided with a laser signal sensing area, the photodetector is connected with the signal processing unit, and the signal processing unit is connected with the communication unit.

[0032] In the embodiment, the laser signal sensing area on the photodetector is additionally provided with a stray light filter and a power attenuation sheet, so as to filter out stray light interference and attenuate laser energy; and the test equipment can accurately sense the laser signal and is not damaged by the laser energy.

[0033] In the embodiment, the master timing system comprises a data receiving unit, a signal processing unit, a timing unit, a display unit and a data storage unit connected with each other. The master timing system can set the number of laser detection modules according to the needs of test measurement.

[0034] As shown in Figure 2 The embodiment also provides a laser action time measurement method adaptable to multiple scenes, comprising the following steps:

[0035] S0, the laser detection module, the master timing system are powered on to check the state, and after the state is normal, the action test parameters are set on the master timing system;

[0036] S1. Arranging a test scene, for example, placing a target plate and a cutoff plate in the optical path of the laser equipment, placing two laser detection modules in front of the target plate and the cutoff plate respectively, and adjusting the position of the sensing area of the laser detection module. The distance between the laser detection module and the target plate and the cutoff plate should be able to ensure that the sensing area of the photoelectric module can quickly and effectively sense the diffuse reflection light and not be damaged by the laser. Therefore, the placement position needs to be greater than the critical distance. The laser equipment emits laser to the target plate according to the predetermined direction, and based on the principle of diffuse reflection of light, the laser diffuse reflection reaches the laser signal sensing area of the laser detection module.

[0037] Specific provisions of the arrangement distance are as follows:

[0038] The laser acting on the target plate will diffuse, and the unabsorbed laser will follow the Lambert reflection law:

[0039]

[0040]

[0041] d1=Rsinθ

[0042] d2=Rcosθ

[0043] In the formula, E A is the maximum saturation threshold of the laser detection module, P0 is the laser power radiated to the target plate, η is the reflectivity of the target plate, θ is the angle between the diffuse reflection and the normal line of the target plate, is the incident angle of the diffuse reflection light at the target point, R is the distance between the diffuse reflection point and the target plate, d1 is the vertical distance critical value, and d2 is the horizontal distance critical value.

[0044] As shown in Figure 3As shown, when θ is in the range of 0-45°, the diffuse reflection light mainly acts on the BC surface, and when θ is in the range of 45-90°, the diffuse reflection mainly acts on the AB surface. When θ = 60°, the diffuse reflection power density of the AB surface is the largest, and when θ = 0°, the diffuse reflection power density of the BC surface is the largest. Therefore, the arrangement distance should satisfy: the horizontal distance between the laser detection module and the target plate is greater than d2, and the vertical distance is greater than d1.

[0045] According to the placement position, the corresponding formula is substituted to calculate the E of the corresponding position A . According to the correspondence between the optical signal and the electrical signal of the selected laser detector, the electrical signal value output by the laser signal of a specific wavelength sensed by the set position can be obtained. According to the correspondence between the optical signal and the electrical signal of the selected laser detector (the conversion characteristics of the selected device itself), the preset value of the master timing system is selected.

[0046] S2. The laser detection module senses the optical signal, converts it into an electrical signal, and outputs the electrical signal after filtering and attenuating the optical signal in the sensing area. The electrical signal data is sent to the master timing system through wireless or wired means. In this step, an interference filter is added to the sensing area of the laser detection module to filter the incident light. The filter corresponding to the measurement laser wavelength is selected to filter out external stray light, ensuring that the laser detection module only receives laser of the corresponding wavelength and ensuring test accuracy;

[0047] S3. After the master timing system receives the data transmitted by the laser detection module, the electrical signal is analyzed and processed, and the corresponding time is recorded. Specifically, the electrical signal is analyzed to determine whether the electrical signal value is greater than the preset value: if yes, the laser action time t1 is displayed and recorded in real time; if not, the size of the electrical signal is continuously monitored in real time;

[0048] S4. When the laser penetrates the target plate and acts on the cutoff plate, the second laser detection module and the master timing system are triggered to display and record the time t2 when the laser penetrates the target plate and acts on the cutoff plate in real time;

[0049] S5. After the master timing system processes the data recorded by the electrical signal value, the time is calculated by combining the time recorded before and after the target plate, and the laser action time, i.e. the effective time (t2-t1) of the laser acting on the first target plate, is obtained.

[0050] The above method steps can be extended to the use scene of multiple levels and multiple terrains of movable and static targets. When n-1 target plates and 1 cutoff plate are placed in the light path of the laser device, in step S1, one laser detection module is placed in front of each target plate and the cutoff plate, and steps S2 and S3 remain unchanged. In step S4, when the laser penetrates the first target plate and acts on the second target plate, the second laser detection module and the main control timing system are triggered to display and record the time t2 of the laser penetrating the first target plate and acting on the second target plate in real time; when the laser penetrates the i-th target plate and acts on the (i+1)-th target plate, the (i+1)-th laser detection module and the main control timing system are triggered to display and record the time t i of the laser penetrating the i-th target plate and acting on the (i+1)-th target plate in real time. According to step S5, the time of the laser penetrating each target plate can be obtained: (t2-t1), (t3-t2), …. n When the laser can act on the target plate and the cutoff plate in the rear in turn, it can be diffusely reflected to the i-th laser detection module in front, and the light signal is converted into an electrical signal, which is monitored by the main control timing system and the corresponding time is recorded.

[0051] Based on the combination of multiple laser detection modules, multiple target plates and a cutoff plate, and the main control timing system, the timing device can select multiple target plates and laser detection modules for combination according to the strength of the laser to be measured, and then realize multi-level action time measurement. By matching the type of the device acting target and the device acting ability, the number of matching laser detection modules can be selected, and the parameter setting (the number of laser detection modules, the preset electrical signal value) of the main control timing system can be performed. According to the size of the place to be measured, it can adapt to open or narrow areas; according to the different forms of the target plate, the action time measurement of static and dynamic acting targets can be realized.

[0052] The above is only a preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A laser interaction time measurement device adaptable to multiple scenarios, used to assist in performance testing and interaction performance verification of laser-related equipment, characterized in that: The system includes a target plate, a cutoff plate, a laser detection module, and a main control timing system. The target plate and the cutoff plate are placed in the optical path of the laser device. The laser detection module is placed in front of the target plate and the cutoff plate and is connected to the main control timing system. After sensing the optical signal, the module converts it into an electrical signal and transmits the data to the main control timing system via wired or wireless means. The main control timing system analyzes and processes the transmitted data, records the corresponding action time, and calculates the action time of the laser on each target plate. Multiple target plates are sequentially placed in the optical path of the laser device, with a cutoff plate placed at the end of each target plate, and a laser detection module placed in front of each target plate and the cutoff plate. By combining multiple laser detection modules and target plates of different materials, it is possible to measure the performance of different laser devices; by combining various components, it is possible to measure in open and narrow areas; by combining the designed timing device with different types of target plates, it is possible to test the performance of static and dynamic targets.

2. The laser action time measurement device adaptable to multiple scenarios according to claim 1, characterized in that: The laser detection module includes a photodetector, a signal processing unit, and a communication unit. The photodetector is provided with a laser signal sensing area. The photodetector is connected to the signal processing unit, and the signal processing unit is connected to the communication unit.

3. The laser action time measurement device adaptable to multiple scenarios according to claim 2, characterized in that: The laser signal sensing area on the photodetector is equipped with a stray light filter and a power attenuator to filter out stray light interference and attenuate laser energy, ensuring that the test equipment can accurately sense the laser signal and is not damaged by the laser energy.

4. The laser action time measurement device adaptable to multiple scenarios according to claim 1, characterized in that: The main control timing system includes interconnected data receiving unit, signal processing unit, timing unit, display unit, and data storage unit.

5. The measurement method of a laser action time measurement device adaptable to multiple scenarios according to any one of claims 1 to 4, characterized in that: Includes the following steps: S1. Set up the test scenario, place the laser detection module in front of the target plate and the cutoff plate respectively, and adjust the position of the sensing area of ​​the laser detection module. The laser device emits laser light to the target plate in a predetermined direction and acts on the starting target plate. Based on the principle of diffuse reflection of light, the laser light diffusely reflects to the laser signal sensing area of ​​the laser detection module. S2. After the light signal is filtered and attenuated by the sensing area, the laser detection module senses the light signal, converts it into an electrical signal, outputs an electrical signal, and then sends the electrical signal data to the main control timing system wirelessly or via wired means. S3. After receiving the data transmitted from the laser detection module, the main control timing system analyzes and processes it, and records the corresponding time; S4. When the laser penetrates the starting target plate and acts on the next target plate or the cutoff plate, it can trigger the next laser detection module and the main control timing system to display and record the time in real time. S5. By combining the recorded times at the front and back ends of the target board, the laser action time can be obtained.

6. The measurement method of the laser action time measurement device adaptable to multiple scenarios according to claim 5, characterized in that: In step S1, the distance between the laser detection module and the target plate and the cutoff plate should be greater than the critical distance to ensure that the photoelectric module sensing area can quickly and effectively sense the diffuse reflected light and is not damaged by the laser.

7. The measurement method of the laser action time measurement device adaptable to multiple scenarios according to claim 5, characterized in that: In step S3, the main controller monitors the received electrical signal in real time, and records the corresponding time when the electrical signal is greater than the preset value. Monitoring continues when the electrical signal falls below the preset value.

8. The measurement method of the laser action time measurement device adaptable to multiple scenarios according to claim 5, characterized in that: In step S4, when the laser can sequentially act on the target plate and the cutoff plate behind it, it can diffusely reflect to the i-th laser detection module in front of it, sense the light signal and convert it into an electrical signal. After monitoring by the main control timing system, the corresponding action time t is recorded. i .

9. The measurement method of the laser action time measurement device adaptable to multiple scenarios according to claim 5, characterized in that: In step S5, the main control timing system processes the data recorded based on the magnitude of the electrical signal to obtain the actual action time of the target board.

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