Laser action time measuring device and method capable of adapting to multiple scenes

Abstract

The laser action time measuring device comprises a target plate, a cut-off plate, laser detection modules and a master control timing system, the target plate and the cut-off plate are arranged on a light path of laser equipment, the laser detection modules are arranged in front of the target plate and the cut-off plate respectively, light signals are converted into electric signals after being sensed, and the electric signals are sent to the master control timing system. And the data is transmitted to the main control timing system in a wired or wireless manner, and 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. The laser detection module and the master control timing system are used in cooperation to measure time data, and multi-scene and multi-stage performance testing is achieved. Data processing and sending are carried out on detected optical signals, and transmission of data related to the laser signal effect of the equipment is achieved. And the main control timing system loads and processes information sent by each laser detection module, so that the action time can be accurately measured, and the performance of the equipment can be verified.

Description

Technical Field

[0001] The present invention relates to the technical field of laser action capability testing, and in particular to a laser action time measuring device and method adaptable to multiple scenarios, and in particular to a timing device that can be used in combination and is suitable for multiple scenarios. Background Art

[0002] In recent years, laser-related equipment has developed rapidly. When measuring its action time, manual timing is usually used, which later evolved into a video surveillance system plus manual remote interpretation. However, with the development of laser-related equipment in the future, the monitoring image may be "overexposed", resulting in increased error and difficulty in indicator measurement, which will not be suitable for future use.

[0003] In traditional timing methods, the following factors will reduce the accuracy of laser action time: video transmission rate, tester response speed, camera placement, handheld stopwatch error, etc. Using laser detection modules to sense laser signals and record action time solves the problem of low accuracy in traditional measurement methods. Wired or wireless communication technology can be used to transmit data from multiple measurement devices, reduce line connections, and make it easier to combine and use measurement devices in different spaces. Summary of the invention

[0004] The present invention provides a laser action time measurement device and method that can adapt to multiple scenarios, can accurately capture the action time of the laser device acting on the target plate and passing through the target plate, realize fast and accurate measurement of the laser action time, and reduce the error of the traditional measurement method. At the same time, it can realize flexible combination between devices, simple installation and convenient maintenance.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A laser action time measurement device that can adapt to multiple scenarios is used to assist performance testing and action performance verification of laser-related equipment, including a target board, a cutoff board, a laser detection module, and a main control timing system. The target board and the cutoff board are placed on the optical path of the laser equipment, and the laser detection module is placed in front of the target board and the cutoff board respectively, connected to the main control timing system, converts the optical signal into an electrical signal after sensing it, and transmits the data to the main control timing system in a wired or wireless manner. The main control timing system analyzes and processes the transmitted data, records the corresponding action moment, and calculates the action time of the laser acting on each target board.

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

[0008] As a preferred embodiment of the above scheme, the laser detection module includes a photoelectric detector, a signal processing unit, and a communication unit. The photoelectric detector is provided with a laser signal sensing area. The photoelectric detector is connected to the signal processing unit, and the signal processing unit is connected to the communication unit.

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

[0010] As a preferred embodiment of the above scheme, the main control timing system includes a data receiving unit, a signal processing unit, a timing unit, a display unit, and a data storage unit that are interconnected.

[0011] A laser action time measurement method that can adapt to multiple scenarios includes the following steps:

[0012] S1. Arrange the test scene, place the laser detection module in front of the target board and the cutoff board respectively, and adjust the sensing area position of the laser detection module. The laser device emits laser to the target board according to the predetermined direction to act on the starting target board. 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 optical signal in the sensing area, the laser detection module senses the optical signal, converts it into an electrical signal, outputs the electrical signal, and then sends the electrical signal data to the main control timing system wirelessly or wiredly;

[0014] S3. After receiving the data transmitted by the laser detection module, the main 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 the cut-off plate, the next laser detection module and the main control timing system can be triggered to display and record the time in real time;

[0016] S5. Combine the recorded time of the front and back ends of the target board to calculate and obtain the laser action time.

[0017] As a preferred embodiment of the above scheme, in step S1, the placement 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 sensing area of ​​the photoelectric module can quickly and effectively sense the diffusely reflected light and is not damaged by the laser.

[0018] As a preferred embodiment of the above scheme, in step S3, the main control monitors the received electrical signal in real time, and when the electrical signal is greater than a preset value, the corresponding time is recorded; when the electrical signal is lower than the preset value, the monitoring continues.

[0019] As a preferred embodiment of the above scheme, in step S4, 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 of it, sense the light signal and convert it into an electrical signal, and record the action time t after being monitored by the main control timing system. i .

[0020] As a preferred embodiment of the above scheme, in step S5, the main control timing system processes data according to the time recorded by the size of the electrical signal to obtain the actual action time of the target board.

[0021] Due to the above structure, the beneficial effects of the present invention are:

[0022] The present invention utilizes diffuse reflection of light and photovoltaic effect, and determines the laser action moment by filtering the optical signal and converting the photoelectric signal, and calculates the actual action time between the two. Through the combination of multiple laser detection modules and multiple target boards of different materials, the index measurement of the effect of different laser equipment can be realized; through the combination of various components, the measurement of open and narrow areas can be realized; by combining the designed timing device with different types of target boards, the action performance test of static and dynamic targets can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below.

[0024] Figure 1 It is a layout diagram of the device of the present invention;

[0025] Figure 2 It is a schematic diagram of the method flow of the present invention;

[0026] Figure 3 It is a schematic diagram of diffuse reflection of the present invention. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0028] like Figure 1As shown, this embodiment provides a laser action time measurement device that can adapt to multiple scenarios, and is used to assist in performance testing and action performance verification of laser-related equipment, including a target board, a cutoff board, a laser detection module, and a main control timing system. The target board and the cutoff board are placed on the optical path of the laser equipment, and the laser detection module is placed in front of the target board and the cutoff board respectively, and is connected to the main control timing system. After sensing the optical signal, it is converted into an electrical signal, and the data is transmitted to the main control timing system by wire or wireless means. The main control timing system analyzes and processes the transmitted data, and records the corresponding action moment, and calculates the action time of the laser acting on each target board.

[0029] In this embodiment, the target plate and the cutoff plate serve as the targets of the laser action. Multiple target plates and cutoff plates can be set as needed. The size and thickness parameters of the target plate and the cutoff plate can be determined according to actual needs to achieve the test of the performance of different laser equipment. Secondly, the target plate and the cutoff plate can be used as a reference for the position of the laser detection device. The incident laser can be diffusely reflected and incident on the optical signal sensing area of ​​the laser detection module.

[0030] In this embodiment, one or more of the target plates are sequentially placed on the optical path of the laser device, a cutoff plate is placed at the end of the target plate, and a laser detection module is placed in front of each target plate and the cutoff plate. Specifically: when the energy of the laser device is relatively low and has the ability to destroy small targets (i.e., one target plate), it is only necessary to sequentially place a target plate and a cutoff plate on the optical path of the laser device, and a laser detection module is placed in front of the target plate and the cutoff plate to measure the laser action time of the laser device; when the energy of the laser device is high and can destroy large targets (i.e., multiple target plates), multiple target plates can be sequentially placed on the optical path of the laser device, and a cutoff plate is placed at the end of the target plate, and a laser detection module is placed in front of each target plate and the cutoff plate, so that the penetration time under each energy level (such as level one, level two, level three...) can be measured respectively, that is, the time for each energy level to penetrate small to large targets can be measured respectively.

[0031] In this embodiment, the laser detection module includes a photoelectric detector, a signal processing unit, and a communication unit. The photoelectric detector is provided with a laser signal sensing area. The photoelectric detector is connected to the signal processing unit, and the signal processing unit is connected to the communication unit.

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

[0033] In this embodiment, the master timing system includes a data receiving unit, a signal processing unit, a timing unit, a display unit, and a data storage unit that are interconnected. The master timing system can set the number of laser detection modules according to the test measurement requirements.

[0034] like Figure 2 As shown, this embodiment also provides a laser action time measurement method that can adapt to multiple scenarios, including the following steps:

[0035] S0, laser detection module, and main control timing system are all powered on to check the status. If the status is normal, set the function test parameters on the main control timing system;

[0036] S1. Arrange the test scene. Take a target plate and a cutoff plate placed on the optical path of the laser device as an example. Place two laser detection modules in front of the target plate and the cutoff plate respectively, and adjust the sensing area of ​​the laser detection module. The placement distance between the laser detection module and the target plate and the cutoff plate should ensure that the sensing area of ​​the photoelectric module can quickly and effectively sense the diffusely reflected light and is not damaged by the laser. Therefore, it is necessary to ensure that the placement position is greater than the critical distance. The laser device emits laser to the target plate in a predetermined direction. 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.

[0037] The specific provisions for the layout distance are as follows:

[0038] The laser will be diffusely reflected when it acts on the target plate, and the unabsorbed laser follows 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 of the target plate, is the incident angle of diffuse reflected 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] like Figure 3As shown in the figure, when θ is between 0-45°, the diffuse reflection light mainly acts on the BC surface, and when θ is between 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 layout distance should satisfy: the horizontal distance between the laser detection module and the target board is greater than d2, and the vertical distance is greater than d1.

[0045] According to the placement position, substitute the corresponding formula 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 value of the electrical signal output by the laser signal of a specific wavelength sensed at 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 main control timing system is selected.

[0046] S2. After the optical signal is filtered and attenuated in the sensing area, the laser detection module senses the optical signal, converts it into an electrical signal, outputs the electrical signal, and then sends the electrical signal data to the main control timing system wirelessly or wired. In this step, an interference filter is added to the sensing area of ​​the laser detection module to filter the incident light, and a filter corresponding to the measured laser wavelength is selected to filter out external stray light to ensure that the laser detection module only receives lasers of the corresponding wavelength to ensure test accuracy;

[0047] S3. After receiving the data from the laser detection module, the main control timing system analyzes and processes the electrical signal and records the corresponding time. Specifically, the electrical signal is analyzed to determine whether the electrical signal value is greater than the preset value: if so, 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 cut-off plate, the second laser detection module can be triggered, and the main control timing system displays and records the time t2 of the laser penetrating the target plate to the cut-off plate in real time;

[0049] S5. After the main control timing system processes the data according to the time recorded by the electrical signal value, it combines the time recorded by the front and back ends of the target board to calculate the laser action time, that is, the effective time of the laser acting on the first target board (t2-t1).

[0050] The above method steps can be extended to the use scenarios of multi-energy level, multi-terrain, movable and static targets. When n-1 target plates and 1 cutoff plate are placed on the optical path of the laser device, in step S1, a 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 can be triggered to display in real time and record the time t2 when the laser penetrates the first target plate and acts on the second target plate; 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 can be triggered to display in real time and record the time t2 when the laser penetrates the i-th target plate and acts on the (i+1)-th target plate. i When the laser penetrates the n-1th target board and acts on the cut-off board, the nth laser detection module and the main control timing system can be triggered to display and record the time t when the laser penetrates the n-1th target board and acts on the cut-off board in real time. n . According to step S5, the time for the laser to penetrate each target plate can be obtained in the same way: (t2-t1), (t3-t2), ... 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 of it, sense the light signal and convert it 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 boards, cutoff boards and a main control timing system, the timing device can select multiple target boards and laser detection modules for combination according to the strength of the laser to be measured, thereby realizing multi-level action time measurement. By matching the target type of the equipment with the action capability of the equipment, the number of matching laser detection modules can be selected, and the parameters of the main control timing system (the number of laser detection modules, the preset electrical signal value) can be set. 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 board, it can be realized: for static and dynamic action time measurement of targets.

[0052] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A laser action time measurement device that can adapt to multiple scenarios, used to assist in performance testing and action performance verification of laser-related equipment, characterized by: It includes a target board, a cutoff board, a laser detection module, and a main control timing system. The target board and the cutoff board are placed on the optical path of the laser equipment. The laser detection module is placed in front of the target board and the cutoff board respectively, and is connected to the main control timing system. After sensing the optical signal, it is converted into an electrical signal, and the data is transmitted to the main control timing system by 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 board.

2. The laser action time measuring device capable of adapting to multiple scenarios according to claim 1 is characterized in that: One or more target plates are sequentially placed on the optical path of the laser device, a cutoff plate is placed at the end of the target plate, and a laser detection module is placed in front of each target plate and the cutoff plate.

3. The laser action time measuring device capable of adapting to multiple scenarios according to claim 1 is characterized in that: The laser detection module comprises a photoelectric detector, a signal processing unit and a communication unit. The photoelectric detector is provided with a laser signal sensing area. The photoelectric detector is connected to the signal processing unit, and the signal processing unit is connected to the communication unit.

4. The laser action time measuring device capable of adapting to multiple scenarios according to claim 3 is characterized in that: The laser signal sensing area on the photodetector is additionally provided with a stray light filter and a power attenuation plate to filter out stray light interference and attenuate laser energy, thereby ensuring that the test equipment can accurately sense the laser signal and is not damaged by the laser energy.

5. The laser action time measuring device capable of adapting to multiple scenarios according to claim 1 is characterized in that: The main control timing system includes a data receiving unit, a signal processing unit, a timing unit, a display unit, and a data storage unit which are connected to each other.

6. A laser action time measurement method adaptable to multiple scenarios according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1. Arrange the test scene, place the laser detection module in front of the target board and the cutoff board respectively, and adjust the sensing area position of the laser detection module. The laser device emits laser to the target board according to the predetermined direction to act on the starting target board. 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; S2. After filtering and attenuating the optical signal in the sensing area, the laser detection module senses the optical signal, converts it into an electrical signal, outputs the electrical signal, and then sends the electrical signal data to the main control timing system wirelessly or wiredly; S3. After receiving the data transmitted by 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 cut-off plate, the next laser detection module and the main control timing system can be triggered to display and record the time in real time; S5. Combine the recorded time of the front and back ends of the target board to calculate and obtain the laser action time.

7. The laser action time measurement method applicable to multiple scenarios according to claim 6 is characterized in that: In step S1, the placement 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 sensing area of ​​the photoelectric module can quickly and effectively sense the diffuse reflected light and is not damaged by the laser.

8. The laser action time measurement method applicable to multiple scenarios according to claim 6 is characterized in that: In step S3, the main control monitors the received electrical signal in real time, and when the electrical signal is greater than a preset value, the corresponding time is recorded; When the electrical signal is lower than the preset value, monitoring continues.

9. The laser action time measurement method applicable to multiple scenarios according to claim 6 is characterized in that: In step S4, 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 of it, sense the light signal and convert it into an electrical signal. After being monitored by the main control timing system, the corresponding action time t is recorded. i .

10. The laser action time measurement method applicable to multiple scenarios according to claim 6, characterized in that: In step S5, the main control timing system processes the time recorded according to the size of the electrical signal to obtain the actual action time of the target board.

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