Positioning and speed measuring equipment for high-speed moving object

Abstract

The utility model provides positioning and speed measuring equipment for a high-speed moving object. The positioning and speed measuring equipment comprises a laser target assembly, a power box, a control box and an upper computer, the power box is electrically connected with the laser target assembly, the laser target assembly is connected with the control box, and the control box is connected with the upper computer. The laser target assembly comprises a first laser, a second laser, a first light curtain and a second light curtain, the first laser and the first light curtain are opposite and located on a first plane, the second laser and the second light curtain are opposite and located on a second plane, and the first plane is parallel to the second plane. According to the positioning and speed measuring device for the high-speed moving object, the laser curtain serves as a target surface, when a bullet penetrates through the laser curtain, luminous flux received by the photoelectric receiving part changes and is converted into electric signals through the photoelectric conversion element, then the coordinates of an impact point are determined according to the changes of the electric signals, the timing unit is triggered and stopped, and the bullet can be accurately positioned. The method is not influenced by weather, and the accuracy and the stability of measurement are ensured.

Description

Technical Field

[0001] The utility model relates to the field of photoelectric detection equipment, in particular to a positioning and speed measuring device for a high-speed moving object. Background Art

[0002] Gun accuracy is an important indicator of weapons. Product quality is tested during the R&D and production stages to ensure that the products equipped to the troops meet actual use requirements and maximize combat effectiveness. Projectile flight speed and impact point coordinates are important parameters for evaluating ballistic characteristics and ballistic coefficients. Their test results directly represent the relevant performance indicators of the weapon system and are an important basis for the optimal design of the weapon system.

[0003] Currently, commonly used testing methods include contact on / off method, high-speed photography method, passive acoustic positioning method, light curtain measurement method, etc. However, the current methods have disadvantages such as the acoustic and electrical coordinate targets are greatly affected by the environment, mainly vibration, shock waves, wind speed and wind direction, and it is difficult to measure projectiles below the speed of sound.

[0004] Laser light curtain speed measurement is a measuring instrument based on the principle of photoelectric detection. It has the characteristics of high speed measurement accuracy, non-contact, and not affected by weather. Therefore, it has significant advantages in the relevant parameter testing of high-speed moving objects such as projectiles and fragments. However, how to achieve and ensure the accuracy and stability of measurement is still an important issue in the development of laser light curtain speed measurement system. Utility Model Content

[0005] Based on this, it is necessary to provide a positioning and speed measurement device for high-speed moving objects to address at least one of the problems mentioned above.

[0006] The positioning and speed measuring device for high-speed moving objects provided by the utility model application comprises a laser target assembly, a power box, a control box and a host computer; the power box is electrically connected to the laser target assembly, the laser target assembly is connected to the control box, and the control box is connected to the host computer;

[0007] The laser target assembly includes a first laser, a second laser, a first light curtain and a second light curtain. The first laser and the first light curtain are opposite to each other and located on a first plane. The second laser and the second light curtain are opposite to each other and located on a second plane. The first plane is parallel to the second plane.

[0008] In one embodiment, the first light curtain and the second light curtain have the same structure. shape.

[0009] In one embodiment, the first light curtain and the second light curtain are each composed of 32 photoelectric detection units.

[0010] In one embodiment, the photoelectric detection unit includes 80 photoelectric sensors, and the distance between two adjacent photoelectric sensors is 3.175 mm.

[0011] In one of the embodiments, the power of each photoelectric detection unit is 3W.

[0012] In one embodiment, the power of the first laser and the second laser is the same and greater than or equal to 20W.

[0013] In one of the embodiments, a communication converter is further included, and the control box is connected to the host computer via the communication converter.

[0014] The technical solution provided in the embodiments of the present invention brings the following beneficial technical effects:

[0015] The positioning and speed measuring equipment for high-speed moving objects provided by the utility model includes a projectile coordinate and projectile frequency measuring device based on photoelectric conversion, with a laser curtain as the target surface. When a projectile passes through the light curtain, the light flux received by the photoelectric receiving part changes, which is converted into a change in electrical signal by the photoelectric conversion element, and then the coordinates of the impact point are determined according to the change in the electrical signal, and the timing unit is triggered and stopped. It will not be affected by weather, ensuring the accuracy and stability of the measurement. In terms of mechanical structure design, the equipment adopts an overall frame as the main body, and the transmitting and receiving boxes are separated, which is convenient for the disassembly and transportation of the system; in terms of electrical design, through strict device selection and circuit modular design, the safety and stability of the system are improved.

[0016] Additional aspects and advantages of the present application will be given in subsequent parts and will be understood in detail from the subsequent description or learned through the specific implementation of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the connection structure of a positioning and speed measurement device for a high-speed moving object in one embodiment of the utility model;

[0018] Figure 2 This is a schematic structural diagram of a laser target assembly in one embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of a connection framework of a communication device in an embodiment of the utility model;

[0020] Figure 4 It is a schematic diagram of the speed measurement principle in one embodiment of the utility model.

[0021] Description of reference numerals:

[0022] 100-laser target assembly, 200-power box, 300-control box, 400-host computer;

[0023] 110 - a first laser, 120 - a second laser, 130 - a first light curtain, 140 - a second light curtain. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively with reference to the relevant drawings below. Possible embodiments of the utility model are given in the drawings. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein by the drawings. The embodiments described with reference to the drawings are exemplary and are used to make the understanding of the disclosure of the utility model more thorough and comprehensive, and cannot be interpreted as a limitation on the utility model. In addition, if the detailed description of the known technology is non-essential technology for the features of the utility model shown, these technical details may be omitted.

[0025] Those skilled in the relevant art will understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of ordinary technicians in the field to which the utility model belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined as here.

[0026] It will be understood by those skilled in the art that, unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present application refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that the term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0027] The technical solution of the present invention and how the technical solution solves the above-mentioned technical problems are described in detail below with specific embodiments.

[0028] The utility model application provides a positioning and speed measuring device for high-speed moving objects, such as Figure 1 and Figure 2 As shown, the positioning and speed measurement equipment for high-speed moving objects includes a laser target assembly 100, a power box 200, a control box 300 and a host computer 400; the power box 200 is electrically connected to the laser target assembly 100, the laser target assembly 100 is connected to the control box 300, and the control box 300 is connected to the host computer 400.

[0029] The laser target assembly 100 includes a first laser 110, a second laser 120, a first light curtain 130 and a second light curtain 140. The first laser 110 and the first light curtain 130 are opposite to each other and located on a first plane, the second laser 120 and the second light curtain 140 are opposite to each other and located on a second plane, and the first plane is parallel to the second plane.

[0030] The positioning and speed measuring equipment for high-speed moving objects provided by the utility model includes a projectile coordinate and projectile frequency measuring device based on photoelectric conversion, and a laser curtain is used as the target surface. When a projectile passes through the light curtain, the light flux received by the photoelectric receiving part changes, which is converted into a change in electrical signal by the photoelectric conversion element, and then the coordinates of the impact point are determined according to the change in the electrical signal, and the timing unit is triggered and stopped. In terms of mechanical structure design, the equipment adopts an overall frame as the main body, and the transmitting and receiving boxes are separated, which facilitates the disassembly and transportation of the system; in terms of electrical design, through strict device selection and circuit modular design, the safety and stability of the system are improved.

[0031] Specifically, in one of the embodiments of the present application, Figure 2 As shown, the first light curtain 130 and the second light curtain 140 have the same structure. shape.

[0032] Specifically, in combination with the foregoing embodiment, in another embodiment of the present application, the first light curtain 130 and the second light curtain 140 are both composed of 32 photoelectric detection units. Figure 2 The numbers in are specifically the serial numbers of the photoelectric detection units. More specifically, in some implementations of this embodiment, the photoelectric detection unit includes 80 photoelectric sensors, and the distance between two adjacent photoelectric sensors is 3.175 mm. Furthermore, the power of each photoelectric detection unit is 3W.

[0033] Specifically, in combination with the above-mentioned embodiments, in another embodiment of the present application, the power of the first laser 110 and the second laser 120 is the same and greater than or equal to 20 W. In a specific example, the light curtain size is 4m×4m, the light slit width is 30mm, and the laser power is 20W.

[0034] Specifically, in combination with the foregoing embodiments, in another embodiment of the present application, the positioning and speed measurement device for a high-speed moving object further includes a communication converter, and the control box 300 is connected to the host computer 400 via the communication converter.

[0035] The positioning and speed measurement equipment for high-speed moving objects consists of a host computer, a control box, an electric light source box, a laser and a detection circuit, etc. Figure 1 The communication converter completes the conversion between R485 and R232 (or Ethernet) communication modes. Figure 3As shown; the power box provides two sets of 24V DC voltage to the light curtain detector. The input voltage of the power box is 220V, and the input voltage fluctuation shall not exceed 10%; the control box completes the opening and closing of the laser and the communication control of the detection unit; the input voltage of the power box and the control box is 220V, and the input voltage fluctuation shall not exceed 10%. The laser input current is about 2A, the power of each light curtain is about 100W, and the input current is about 4A. The system has a total of 64 photoelectric detection units, Figure 3 The middle unit acquisition board is the photoelectric detection unit. Each detection unit has a power of about 3W, a length of 254 mm, 80 photoelectric sensors, and a sensor span of 3.175 mm. There are 16 detection units on each side of the target frame, and the detection length can be 4064 mm. Each scene detection unit needs to synchronize the acquisition timing, and the front and back scenes also need to synchronize the acquisition.

[0036] like Figure 4 As shown, the photodiode is The arrangement number of the signal acquisition board is m = 1, 2, 3...M, and the arrangement number of the photoelectric tube in each signal acquisition board is n = 1, 2, 3...N, and they are numbered from 1 to N. The laser line projected to the corresponding photoelectric tube forms a certain angle α or β with the X-axis. The formula is:

[0037]

[0038] If the bullet blocks the photoelectric sensor at the side of the target frame, that is, the signal acquisition board number m satisfies the condition: 1≤m≤M / 2, and the angle α or β is calculated using formula (1); when the bullet blocks the photoelectric sensor at the top of the target frame, that is, the signal acquisition board number m satisfies the condition: M / 2≤m≤M, and the angle α or β is calculated using formula (2).

[0039] If the bullet passes through the target frame, the shielding electric sensor number is from j to k, then Figure 4 The angle α in the positioning model is:

[0040]

[0041] Similarly, the angle β in the positioning model can be measured. The projectile coordinates (x, y) can be calculated by solving the triangle through parameters such as the target frame length, width, and laser coordinate position.

[0042] It will be appreciated by those skilled in the art that the various operations, methods, steps, measures, and schemes in the processes discussed in this application may be alternated, altered, combined, or deleted. Furthermore, other steps, measures, and schemes in the various operations, methods, and processes discussed in this application may also be alternated, altered, rearranged, decomposed, combined, or deleted. Furthermore, the steps, measures, and schemes in the prior art that are similar to those disclosed in this application may also be alternated, altered, rearranged, decomposed, combined, or deleted.

[0043] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0044] The above description is only a partial implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A positioning and speed measurement device for a high-speed moving object, characterized in that: It includes a laser target assembly, a power box, a control box and a host computer; the power box is electrically connected to the laser target assembly, the laser target assembly is connected to the control box, and the control box is connected to the host computer; The laser target assembly includes a first laser, a second laser, a first light curtain and a second light curtain, the first laser and the first light curtain are opposite to each other and located on a first plane, the second laser and the second light curtain are opposite to each other and located on a second plane, and the first plane is parallel to the second plane; the first light curtain and the second light curtain are each composed of 32 photoelectric detection units, the photoelectric detection units include 80 photoelectric sensors, and the distance between two adjacent photoelectric sensors is 3.175 mm.

2. The high-speed moving object positioning and speed measurement device according to claim 1, characterized in that: The first light curtain and the second light curtain have the same structure. shape.

3. The high-speed moving object positioning and speed measurement device according to claim 1, characterized in that: The power of each photoelectric detection unit is 3W.

4. The high-speed moving object positioning and speed measurement device according to claim 1, characterized in that: The power of the first laser and the second laser is the same and greater than or equal to 20W.

5. The high-speed moving object positioning and speed measurement device according to claim 1, characterized in that: It also includes a communication converter, and the control box is connected to the host computer through the communication converter.

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