Particle image velocity measurement device based on binocular camera

Abstract

The utility model discloses a particle image velocity measurement device based on a binocular camera, which comprises a casing and an adjusting mechanism, the front of the casing is fixedly connected with an industrial personal computer, and the bottom of the casing is fixedly connected with two U-shaped plates. Through cooperative operation of the laser emitter, the pulse controller, the particle generator and the high-speed camera, internal shooting of a flow field is achieved, flow field characteristics are accurately captured, displacement of a square rod with a hole can be accurately regulated and controlled by means of mutual cooperation of a servo motor and a threaded rod, and then the high-speed camera is pushed to flexibly adjust the shooting angle; therefore, the two high-speed cameras can shoot the flow field from different visual angles, the accuracy of particle image acquisition is greatly improved, the accuracy of flow velocity measurement is further remarkably improved, and more reliable data support is provided for related research and application.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of particle image velocimetry technology, concretely to a particle image velocimetry device based on binocular camera. BACKGROUND

[0002] Particle image velocimetry is an optical measurement technique for fluid mechanics research, and is widely used in the fields of fluid flow, airflow, liquid flow, combustion process and the like, which captures the flow field image with small particles to calculate the velocity distribution of fluid at each position.

[0003] At present, when measuring the velocity of the measured flow field, the particle image velocimetry device needs to be used, and the velocity measuring device of the present stage can measure the velocity when used, but still has some deficiencies when used, for example, the flow field is generally measured by using a single high-speed camera for shooting, which leads to a single shooting angle when measuring the flow field, so that the particle image acquisition is more one-sided, and the accuracy of the velocity measurement is affected.

[0004] Therefore, the utility model designs a particle image velocimetry device based on binocular camera to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing a particle image velocimetry device based on binocular camera to solve the problem of single shooting angle when measuring the flow field in the above background technology, so that the particle image acquisition is more one-sided. The device can accurately capture the flow field characteristics, and the displacement of the hole square rod can be accurately controlled by the mutual cooperation of the servo motor and the threaded rod, so as to push the high-speed camera to flexibly adjust the shooting angle, so that the two high-speed cameras can shoot the flow field from different angles, greatly improve the accuracy of particle image acquisition, and significantly improve the accuracy of flow velocity measurement, provide more reliable data support for related research and application.

[0006] The technical scheme for realizing the utility model is as follows:

[0007] A kind of particle image velocimetry device based on binocular camera, including the casing of overlap and adjusting mechanism, the front of the casing is equipped with industrial computer, the bottom of the casing is equipped with two U-shaped mouth U-shaped plate towards the bottom of the casing, the bottom of each U-shaped plate is equipped with servo motor, the output end of each servo motor is equipped with threaded rod, the adjusting mechanism is set above the casing, the adjusting mechanism includes the flow field installed on the upper surface of the casing, the upper surface of the flow field is sequentially fixedly connected with laser emitter and pulse controller from bottom to top, the back of the flow field is equipped with particle generator, the inner wall of the casing is connected with two support rods, each support rod is rotatably connected with the hole control plate, the upper surface of each hole control plate is equipped with high-speed camera, the inner bottom wall of the casing is inlaid with two square tubes, the inner wall of each square tube is slidably connected with the hole square rod, the top of two threaded rods extends to the inside of two hole square rods, two threaded rods are threadedly connected with two hole square rods respectively, the industrial computer is connected with high-speed camera.

[0008] Preferably, the left and right sides of the casing are equipped with fixing seat, the upper surface of each fixing seat is fixedly connected with the bottom of the flow field.

[0009] Preferably, the outer wall of each support rod is sleeved with two limit rings, each hole control plate is located between the two limit rings in the corresponding position.

[0010] Preferably, the bottom of each hole control plate is equipped with gyroscope, the front of the casing is equipped with two indicator lights connected with the industrial computer.

[0011] Preferably, the opposite side of two hole control plates is equipped with protective plate, the side of two protective plates away from each other is in contact with the side of two high-speed cameras close to each other, two protective plates are in contact with two hole square rods in the corresponding position respectively.

[0012] Preferably, the inner wall of the casing is equipped with partition, the left and right sides of the partition are equipped with tension spring, the side of two tension springs away from each other is fixedly connected with the side of two protective plates close to each other.

[0013] Preferably, the bottom of the casing is equipped with two supports, the upper surface of each support is fixedly connected with the bottom of the casing, two U-shaped plates are located between two supports.

[0014] The bottom of the flow field is equipped with through hole for high-speed camera to shoot particle image.

[0015] The output end of the particle generator is communicated with the inner cavity of the flow field.

[0016] Compared with the prior art, the utility model discloses the beneficial effects are: through laser emitter, pulse controller, particle generator and high -speed camera, the inside shooting of flow field is realized in cooperation and operation, and flow field characteristics are captured accurately, with the mutual cooperation of servo motor and threaded rod, the displacement of the hole square pole can be accurately regulated and controlled, and then the high -speed camera is pushed to adjust the shooting angle flexibly, so that two high -speed cameras can shoot the flow field from different visual angle, the precision of particle image acquisition is improved greatly, and then the accuracy of flow velocity measurement is improved significantly, and more reliable data support is provided for relevant research and application. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the whole structure schematic diagram of the utility model;

[0018] Figure 2 It is the three -dimensional structure schematic diagram of the side view of the utility model;

[0019] Figure 3 It is the three -dimensional structure schematic diagram of the front view of the utility model;

[0020] Figure 4 It is the three -dimensional structure schematic diagram of the side view of the utility model.

[0021] In the drawing, 1, casing;101, industrial computer;102, support;103, indicating lamp;2, adjusting mechanism;201, flow field;202, laser emitter;203, pulse controller;204, particle generator;205, baffle;206, support rod;207, hole control board;208, high -speed camera;209, protection plate;210, hole square pole;211, tension spring;3, fixed base;4, U-shaped plate;5, servo motor;501, threaded rod;6, square tube;7, limit ring;8, gyroscope. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the scope of the utility model. EMBODIMENT

[0023] Please refer to Figures 1 to 4The utility model provides a kind of particle image velocimetry device based on binocular camera, including the casing 1 of superposition and adjusting mechanism 2, the front of casing 1 is equipped with industrial computer 101, the bottom of casing 1 is equipped with two U-shaped plates 4 with U-shaped mouth towards the bottom of casing 1 at intervals, the bottom of each U-shaped plate 4 is equipped with servo motor 5, the output end of each servo motor 5 is equipped with threaded rod 501, adjusting mechanism 2 is set to the top of casing 1, adjusting mechanism 2 includes installation on the upper surface of casing 1 flow field 201, the upper surface of flow field 201 is sequentially fixedly connected with laser emitter 202 and pulse controller 203 from bottom to top, the back of flow field 201 is equipped with particle generator 204, the inner wall of casing 1 is connected with two support rods 206, the upper of each support rod 206 is rotatably connected with hole control plate 207, the upper surface of each hole control plate 207 is equipped with high-speed camera 208, the inner bottom wall of casing 1 is inlaid with two square tubes 6 at intervals, the inner wall of each square tube 6 is slidably connected with hole square rod 210, the top of two threaded rods 501 extends to the inside of two hole square rods 210, two threaded rods 501 are threadedly connected with two hole square rods 210 respectively, industrial computer 101 is electrically connected with high-speed camera 208.

[0024] As Figure 1 Indicated, the left and right side surfaces of casing 1 are equipped with fixed seat 3, the upper surface of each fixed seat 3 is fixedly connected with the bottom of flow field 201, the stability of flow field 201 can be increased by fixed seat 3 to reinforce flow field 201.

[0025] As Figure 3 Indicated, the outer wall of each support rod 206 is sleeved with two limit rings 7, each hole control plate 207 is located between the two limit rings 7 of corresponding position.

[0026] As Figure 3 Indicated, the bottom of each hole control plate 207 is equipped with gyroscope 8, the front of casing 1 is equipped with two indicator lights 103 electrically connected with industrial computer 101, the rotation angle of high-speed camera 208 can be inducted by gyroscope 8, so as to accurately control high-speed camera 208 by staff.

[0027] As Figure 3 Indicated, the opposite side of two hole control plates 207 is equipped with protection plate 209, the side of two protection plates 209 away from each other respectively is in contact with the side of two high-speed cameras 208 close to each other, high-speed camera 208 can be protected by protection plate 209, to prevent high-speed camera 208 surface from being abraded, two protection plates 209 are in contact with two hole square rods 210 of corresponding position respectively.

[0028] As Figure 3As shown, the inner wall of the shell 1 is provided with a partition plate 205, and the left and right sides of the partition plate 205 are provided with pull springs 211, and the ends of the two pull springs 211 away from each other are fixedly connected with the sides of the two protection plates 209 close to each other, and through the cooperation of the partition plate 205 and the pull spring 211, the high-speed camera 208 can be limited, and the swing of the high-speed camera 208 can be prevented.

[0029] As shown in the figure, Figure 1 As shown, the lower part of the shell 1 is provided with two supports 102, and the upper surfaces of each support 102 are fixedly connected with the bottom surface of the shell 1, and the two U-shaped plates 4 are located between the two supports 102, and through the support 102, the device can be supported, and the servo motor 5 can be protected, and the servo motor 5 can be prevented from being collided.

[0030] The bottom surface of the flow field 201 is provided with a through hole for the high-speed camera 208 to shoot the particle image.

[0031] The output end of the particle generator 204 is in communication with the inner cavity of the flow field 201.

[0032] When the device is powered on and not working, the left indicator light shows red, indicating that it is not working, and the right indicator light is off, when the device is powered on and working, the left indicator light is off, and the right indicator light shows green, indicating that it is working, when the device is powered off, both indicator lights are off.

[0033] The implementation principle of the embodiment is: in use, first start the servo motor 5, the servo motor 5 drives the threaded rod 501 to rotate, the threaded rod 501 controls the hole-bearing square rod 210 to move upward, the hole-bearing square rod 210 pushes the protection plate 209 upward, the protection plate 209 drives the hole-bearing control plate 207 to rotate along the support rod 206 as the axis, thereby adjusting the shooting angle of the high-speed camera 208, then start the pulse controller 203, the laser emitter 202 and the particle generator 204, so that the particle generator 204 adds particles in the flow field 201, and then start the high-speed camera 208, so that the high-speed camera 208 takes a photo of the inside of the flow field 201, and uploads the taken photo to the industrial computer 101, and saves and analyzes the image through the industrial computer 101.

[0034] In the description of the present application, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the present application. In the description of the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0035] The preferred embodiments disclosed above are only used to help describe the utility model. The preferred embodiments do not describe all the details and do not limit the utility model to the specific embodiments. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that the persons skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the entire scope and equivalents thereof.

Claims

1. A particle image velocimetry device based on a binocular camera, comprising a telescopic housing (1) and an adjustment mechanism (2), characterized in that: The front surface of the shell (1) is provided with an industrial computer (101), and the bottom surface of the shell (1) is provided with two U-shaped plates (4) with U-shaped openings facing the bottom surface of the shell (1), the bottom surface of each U-shaped plate (4) is provided with a servo motor (5), the output end of each servo motor (5) is provided with a threaded rod (501), the adjusting mechanism (2) is arranged above the shell (1), the adjusting mechanism (2) comprises a flow field (201) mounted on the upper surface of the shell (1), the upper surface of the flow field (201) is sequentially and fixedly connected from bottom to top with a laser emitter (202) and a pulse controller (203), the back surface of the flow field (201) is provided with a particle generator (204), the inner wall of the shell (1) penetrates two supporting rods (206), each supporting rod (206) is rotatably connected with a hole control plate (207), the upper surface of each hole control plate (207) is provided with a high-speed camera (208), the inner bottom wall of the shell (1) is inlaid with two square tubes (6), the inner wall of each square tube (6) is slidably connected with a hole square rod (210), the top ends of the two threaded rods (501) extend into the interiors of the two hole square rods (210), the two threaded rods (501) are threadedly connected with the two hole square rods (210) respectively, and the industrial computer (101) is connected with the high-speed camera (208).

2. The device according to claim 1, wherein: The left and right side surfaces of the shell (1) are provided with fixed seats (3), and the upper surface of each fixed seat (3) is fixedly connected with the bottom surface of the flow field (201).

3. The device according to claim 1, wherein: The outer wall of each supporting rod (206) is sleeved with two limiting rings (7), and each hole control plate (207) is located between the two limiting rings (7) at the corresponding positions.

4. The device according to claim 1, wherein: The bottom surface of each hole control plate (207) is provided with a gyroscope (8), and the front surface of the shell (1) is provided with two indicator lights (103) connected with the industrial computer (101).

5. The device according to claim 1, wherein: The opposite surfaces of the two hole control plates (207) are provided with protective plates (209), the opposite surfaces of the two protective plates (209) are in contact with the side surfaces of the two high-speed cameras (208) which are close to each other, and the two protective plates (209) are in contact with the two hole square rods (210) at the corresponding positions.

6. The device according to claim 5, wherein: The inner wall of the shell (1) is provided with a partition plate (205), the left and right side surfaces of the partition plate (205) are provided with pull springs (211), and the side surfaces of the two protective plates (209) which are close to each other are fixedly connected with the ends of the two pull springs (211) which are away from each other.

7. The device according to claim 1, wherein: The lower surface of the shell (1) is provided with two supports (102), the upper surface of each support (102) is fixedly connected with the bottom surface of the shell (1), and the two U-shaped plates (4) are located between the two supports (102).

8. The device according to claim 1, wherein: The bottom surface of the flow field (201) is provided with a through hole for the high-speed camera (208) to shoot particle images.

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