CN213661749U

CN213661749U - Video acquisition device for measuring motion attitude of object

Info

Publication number: CN213661749U
Application number: CN202023074568.8U
Authority: CN
Inventors: 陈智强; 李春; 郭维成; 邓志忠; 赵航云; 朱玉梅; 李涛; 李声扬
Original assignee: CHENGDU LIXIN NEW TECHNOLOGY CO LTD
Current assignee: CHENGDU LIXIN NEW TECHNOLOGY CO LTD
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2021-07-09
Anticipated expiration: 2030-12-18

Abstract

The utility model discloses a video acquisition device for measuring the motion attitude of an object, which comprises a shell, an industrial camera, a UV waterproof filter, a protective sleeve, a camera base, a connecting cable, a photoelectric encoder, an encoder fixing base, a worm speed-reducing stepping motor, a PCB adapter plate, a rotary bearing, a motor fixing shaft and a positioning base, wherein the positioning base is fixed on a cross beam, the motor fixing shaft is fixed on the positioning base, and the rotary bearing is sleeved on the motor fixing shaft; the industrial camera is fixed on one side of the shell through the camera seat, and the UV waterproof filter and the protective sleeve are arranged on the industrial camera; the connecting cable is connected with the industrial camera; the worm speed-reducing stepping motor is fixed at the bottom of the shell, a power shaft of the worm speed-reducing stepping motor is connected with the motor fixing shaft, and the photoelectric encoder is connected with the power shaft; photoelectric encoder and worm speed reduction step motor all are connected with the PCB keysets. The utility model discloses the structure of equipment has been simplified and the volume of equipment has been reduced, makes the operation of equipment simple nimble convenience more simultaneously.

Description

Video acquisition device for measuring motion attitude of object

Technical Field

The utility model relates to a measure technical field, specifically speaking relate to a measure video acquisition device of object motion gesture.

Background

The moving posture video measuring technology is to use a machine to replace human eyes for measurement and judgment, but the human eyes or a common industrial camera can hardly capture the details of a moving object due to the high speed of the object moving at a high speed, so that the image acquisition technology capable of imaging at a high speed is required to finish the rapid and repeated sampling of a high-speed target in a short time, so that the change process of the recorded target is clearly and slowly presented in front of the eyes of people.

Video measurement based on the binocular stereo vision principle is an important technology of modern video measurement, and three-dimensional geometric information of an object is acquired from a plurality of images based on the parallax principle. For example, in the prior art with patent publication No. CN103727927B, on 14/10/2015, there is disclosed a method for measuring the pose of a high-speed moving object based on structured light, which is based on the principle that two high-speed industrial cameras simultaneously obtain two digital images of the object to be measured from different angles, and recover the three-dimensional geometric information of the object based on the parallax principle to reconstruct the three-dimensional contour and position of the object. Therefore, the binocular stereoscopic vision video measurement system has wide application prospect in the field of video measurement. However, in the current video measuring equipment, the industrial camera is often fixedly arranged, and the acquisition angle is very inconvenient to adjust. Moreover, the current video measurement is complex in structure, heavy in volume and inconvenient to carry and operate.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve the above-mentioned problem that exists among the prior art, provide a measure video acquisition device of object motion gesture, the utility model discloses the structure of equipment has been reduced and the volume that has reduced equipment has made the operation of equipment simple and flexible convenience more simultaneously.

In order to achieve the above object, the utility model adopts the following technical scheme:

the utility model provides a measure video acquisition device of object motion gesture which characterized in that: the camera comprises a shell, an industrial camera, a UV waterproof filter, a protective sleeve, a camera base, a connecting cable, a photoelectric encoder, an encoder fixing base, a worm speed-reducing stepping motor, a PCB adapter plate, a rotary bearing, a motor fixing shaft and a positioning base, wherein the positioning base is fixed on a cross beam, the motor fixing shaft is fixed on the positioning base, and the rotary bearing is sleeved on the motor fixing shaft; the camera base, the photoelectric encoder, the encoder fixing base, the worm speed-reducing stepping motor and the PCB adapter plate are all arranged in the shell; the industrial camera is fixed on one side of the shell through the camera seat, and the UV waterproof filter and the protective sleeve are arranged on the industrial camera; one end of the connecting cable is connected with the industrial camera, and the other end of the connecting cable is used for being connected with the main controller; the worm speed-reducing stepping motor is fixed at the bottom of the shell, a power shaft of the worm speed-reducing stepping motor extends out of the shell and is connected with a motor fixing shaft, and the photoelectric encoder is connected with the power shaft of the worm speed-reducing stepping motor through an encoder fixing seat; the PCB pinboard is fixed at the other side of casing, and photoelectric encoder and worm speed reduction step motor all are connected with the PCB pinboard.

The casing is closed structure, and it includes shell body, front panel, rear panel and bottom panel, and the industry camera passes through the camera seat to be fixed on the front panel, and photoelectric encoder, encoder fixing base and worm speed reduction step motor all fix on the bottom panel, and the PCB keysets is fixed on the rear panel.

The rear panel is also provided with a clamping seat for fixing the cable.

The number of the clamping seats is two, and the clamping seats are arranged up and down.

The motor fixing shaft is provided with a step ring, and the rotating bearing is sleeved on the step ring.

A temperature and humidity sensor is integrated on the PCB adapter plate, a semiconductor refrigerator is arranged on the rear panel, and the temperature and humidity sensor and the semiconductor refrigerator are both connected with the PCB adapter plate.

Adopt the utility model has the advantages of:

1. the utility model discloses a casing, industry camera, the waterproof filter of UV, protective sheath, camera frame, connecting cable, photoelectric encoder, encoder fixing base, worm speed reduction step motor, PCB keysets, swivel bearing, motor fixed axle and location base adopt this particular structure, can effectively realize the regulation of industry camera position angle, control very conveniently. Each part is rationally arranged on the shell, so that the structure of the equipment is more exquisite, the size is smaller and more exquisite, and the carrying and the control are more facilitated. In practical application, the measuring efficiency can be effectively improved, and the device can adapt to work under different complex working condition environments.

2. The utility model discloses a closed casing can make each electronic component effectively protected, is favorable to promoting video acquisition device life.

3. The utility model discloses a various cables that the cassette can effectively be fixed and link to each other with video acquisition device more are favorable to the standardization and the aesthetic property of wiring.

4. The utility model discloses establish the swivel bearing cover on the step ring of motor fixed axle, more be favorable to reducing the frictional force that brings when rotating to make the rotation of industrial camera adjust more sensitively.

5. The utility model discloses a temperature and humidity sensor and semiconductor cooler's cooperation can adjust temperature and humidity around the industry camera in real time, has overcome the influence of environment humiture to video measurement effect, is favorable to improving measuring result's accuracy and accuracy nature by a wide margin.

Drawings

FIG. 1 is a schematic structural view of example 1;

FIG. 2 is a schematic structural view of example 2;

FIG. 3 is a schematic view showing the structure of the illumination compensating apparatus of embodiment 2 on a cross member;

labeled as: 1. the system comprises a host, 2, a synchronous controller, 3, a beam, 4, a video acquisition device, 5, an illumination compensation device, 6, a glass observation window, 7 and an object to be measured;

401. the camera comprises a shell, 402, an industrial camera, 403, a UV waterproof filter, 404, a protective sleeve, 405, a camera seat, 406, a connecting cable, 407, a photoelectric encoder, 408, an encoder fixing seat, 409, a worm speed reduction stepping motor, 410, a PCB adapter plate, 411, a rotating bearing, 412, a motor fixing shaft, 413, a positioning base, 414, a clamping seat, 415 and a semiconductor refrigerator.

Detailed Description

Example 1

The embodiment discloses a video acquisition device for measuring the motion posture of an object, which comprises a shell 401, an industrial camera 402, a UV waterproof filter 403, a protective sleeve 404, a camera holder 405, a connecting cable 406, a photoelectric encoder 407, an encoder fixing seat 408, a worm speed reduction stepping motor 409, a PCB adapter plate 410, a rotary bearing 411, a motor fixing shaft 412 and a positioning base 413, wherein the positioning base 413 is fixed on a beam 3, the motor fixing shaft 412 is fixed on the positioning base 413, a step ring is arranged on the motor fixing shaft 412, and the rotary bearing 411 is sleeved on the step ring, so that the friction force caused by rotation can be reduced; the camera base 405, the photoelectric encoder 407, the encoder fixing base 408, the worm speed reduction stepping motor 409 and the PCB adapter plate 410 are all arranged in the shell 401; an industrial camera 402 is fixed on one side of the housing 401 through a camera base 405, and a UV waterproof filter 403 and a protective cover 404 are both arranged on the industrial camera 402; one end of the connection cable 406 is connected with the industrial camera 402, and the other end is used for connecting with the main controller; a worm speed-reducing stepping motor 409 is fixed at the bottom of the shell 401, a power shaft of the worm speed-reducing stepping motor 409 extends out of the shell 401 to be connected with a motor fixing shaft 412, a photoelectric encoder 407 is connected with the power shaft of the worm speed-reducing stepping motor 409 through an encoder fixing seat 408, and the photoelectric encoder 407 is used for detecting the initial position of the power shaft so as to accurately control the rotation angle; the PCB adapter plate 410 is fixed on the other side of the shell 401, the photoelectric encoder 407 and the worm speed reduction stepping motor 409 are both connected with the PCB adapter plate 410, and the PCB adapter plate 410 is externally connected with a main controller. In practical use, a main controller can be set, and various instructions such as opening and closing the worm speed reduction stepping motor 409, opening and closing the industrial camera 402 and the like are issued to the PCB adapter plate 410 and the industrial camera 402 through the main controller, so that the motion attitude of the object can be effectively measured. In addition, the image captured by the industrial camera 402 is sent directly to the main controller for processing.

In this embodiment, the housing 401 has a closed structure, preferably a square shape. The shell comprises a shell body, a front panel, a rear panel and a bottom panel, wherein the shell body comprises an upper panel and two side panels which are integrally formed, the front panel and the rear panel are respectively fixed at two ends of the side panels, and the bottom panel is fixed at the bottom of the side panels. The industrial camera 402 is fixed on the front panel through a camera base 405, the photoelectric encoder 407, the encoder fixing base 408 and the worm speed-reducing stepping motor 409 are all fixed on the bottom panel, and the PCB adapter plate 410 is fixed on the rear panel.

Furthermore, a through hole is further formed in the rear panel, and a clamping seat 414 for fixing the cable is fixedly arranged at the through hole. The number of the clamping seats 414 is two, and the two clamping seats are arranged up and down. Various cables connected with video acquisition device 4 are integrally fixed through card seat 414, which is more favorable for standardization and aesthetic property of wiring.

In this embodiment, a temperature and humidity sensor (not shown) is integrated on the PCB interposer 410, a semiconductor cooler 415 is disposed on the rear panel, and both the temperature and humidity sensor and the semiconductor cooler 415 are connected to the PCB interposer 410. In actual use, because the PCB adapter plate 410 is connected to the main controller, the main controller can control the semiconductor refrigerator 415 to adjust the working environment humidity of the industrial camera 402 according to the detection result of the temperature and humidity sensor, so as to enable the video capture device 4 to work under a suitable environment temperature and humidity.

Example 2

The embodiment discloses a video measurement system using the video capture device 4 of embodiment 1, and as shown in fig. 2 and 3, the video measurement system further includes a host 1, a synchronous controller 2, a beam 3, and an illumination compensation device 5. Wherein the illumination compensation device 5 includes an illumination mechanism constituted by LED lamps, and is capable of adjusting the azimuth angle and the pitch angle thereof. The host 1 and the synchronous controller 2 may be used as main controllers for controlling the actions (such as opening and closing and rotation) of the video capture device 4 and the actions (such as opening and closing and rotation) of the illumination compensation device 5, and for processing the images captured by the video capture device 4. The synchronous controller 2 is used for providing power and synchronous trigger signals for the video acquisition device 4 when the requirement on image synchronous acquisition is high, and the synchronous controller simultaneously provides power and upper computer instruction forwarding for the rear-stage drive control panel, wherein the modes comprise external trigger, software trigger, hardware trigger and the like. It specifically includes box body, PCB control panel, signal indication lamp, switch and signal connector, and PCB control panel, signal indication lamp, switch and signal connector all fix on the box body, and the PCB control panel is connected with signal indication lamp, switch and signal connector respectively, and the PCB control panel passes through signal connector and is connected with video acquisition device 4, illumination compensation arrangement 5 and host computer 1 respectively.

Specifically, the video capture devices 4 are preferably symmetrically fixed at both ends of the beam 3. The industrial camera 402 in the video capture device 4 is directly connected to the host 1 via the connection cable 406, so as to achieve fast processing of images. And on the other hand, connected to the host 1 via the connection cable 406 and the synchronization controller 2. Meanwhile, the worm speed-reducing stepping motor 409 is connected with the host 1 through the PCB adapter plate 410 and the PCB control plate. During actual use, the host 1 controls the opening, closing, rotation and the like of the video acquisition device 4 through the synchronous controller 2. The illumination compensation device 5 is fixed in the middle of the beam 3 and is connected with the main machine 1 through the synchronous controller 2. When in practical use, the host 1 controls the lighting compensation device 5 to open, close, rotate and the like through the synchronous controller 2. When the imaging quality is poor due to the fact that the exposure time is short and the quantity of the light entering is small, light can be supplemented through the illumination compensation device 5, and therefore the measurement accuracy is improved.

The implementation principle of the embodiment is as follows:

step 1, as shown in fig. 2, placing an object 7 to be measured in a proper position, setting a glass observation window 6 between the object 7 to be measured and the video acquisition device 4, fixing the video acquisition device 4 horizontally, adjusting the angle position between the industrial camera 402 and the object 7 to be measured, opening the light compensation, completing focusing, and ensuring the imaging definition of the object 7 to be measured.

Step 2, pasting mark points which can be used for image processing software identification on the surface of the object 7 to be tested, enabling the mark points to be firmly pasted on the surface of the object 7 to be tested according to testing requirements, connecting communication control cables among the modules, turning on an illuminating mechanism, and observing through image acquisition software trial acquisition in the host 1, wherein the image is clear, and the mark points can be normally identified.

And 3, opening the control software in the host 1, self-checking each module of the system, and determining that the communication and the control are normal. The working environment parameters of the video acquisition device 4 are read through inquiry, and the current environment parameters are adjusted through the control software of the host 1.

And 4, issuing a command to accurately adjust the angle between the industrial camera 402 and the object 7 to be detected through the host 1 control software, simultaneously starting the image analysis processing software to observe the image acquisition imaging condition of the object 7 to be detected, and finely adjusting parameters such as lamplight, angle and the like again until clear and complete video images can be obtained in the imaging test window and all the mark points are normally and clearly identified.

And 5, opening image analysis processing software, selecting an experiment type as an online experiment, setting acquisition parameters of the industrial camera 402, reading in a real-time image after parameter configuration is finished, setting an experiment mode as extracting a mark point, compressing the image at a high speed or extracting the point and compressing the image, saving data and compressing the image after the online experiment is finished, and displaying the mark point coordinate after real-time analysis processing.

And 6, opening image analysis processing software, selecting an experiment type as an off-line experiment, importing the off-line image into an off-line image folder, selecting an experiment picture, configuring and finely adjusting experiment parameters, analyzing, processing and extracting mark points, displaying the calculated coordinates of the mark points on a display screen, and finishing the measurement of the object 7 to be measured.

Claims

1. The utility model provides a measure video acquisition device of object motion gesture which characterized in that: the device comprises a shell (401), an industrial camera (402), a UV (ultraviolet) waterproof filter (403), a protective sleeve (404), a camera base (405), a connecting cable (406), a photoelectric encoder (407), an encoder fixing base (408), a worm speed-reducing stepping motor (409), a PCB adapter plate (410), a rotary bearing (411), a motor fixing shaft (412) and a positioning base (413), wherein the positioning base (413) is fixed on a cross beam (3), the motor fixing shaft (412) is fixed on the positioning base (413), and the rotary bearing (411) is sleeved on the motor fixing shaft (412); the camera base (405), the photoelectric encoder (407), the encoder fixing base (408), the worm speed reduction stepping motor (409) and the PCB adapter plate (410) are all arranged in the shell (401); the industrial camera (402) is fixed on one side of the shell (401) through the camera base (405), and the UV waterproof filter (403) and the protective sleeve (404) are arranged on the industrial camera (402); one end of the connecting cable (406) is connected with the industrial camera (402), and the other end of the connecting cable is used for being connected with the main controller; a worm speed-reducing stepping motor (409) is fixed at the bottom of the shell (401), a power shaft of the worm speed-reducing stepping motor (409) extends out of the shell (401) and is connected with a motor fixing shaft (412), and a photoelectric encoder (407) is connected with the power shaft of the worm speed-reducing stepping motor (409) through an encoder fixing seat (408); the PCB adapter plate (410) is fixed on the other side of the shell (401), and the photoelectric encoder (407) and the worm speed reduction stepping motor (409) are connected with the PCB adapter plate (410).

2. The video capture device of claim 1, wherein the video capture device is configured to capture a motion gesture of an object, and further configured to: casing (401) are closed structure, and it includes shell body, front panel, rear panel and bottom panel, and industry camera (402) are fixed on the front panel through camera frame (405), and photoelectric encoder (407), encoder fixing base (408) and worm speed reduction step motor (409) are all fixed on the bottom panel, and PCB keysets (410) are fixed on the rear panel.

3. The video capture device of claim 2, wherein the video capture device is configured to capture a motion gesture of an object, and further configured to: the back panel is also provided with a clamping seat (414) for fixing the cable.

4. The video capture device of claim 3, wherein the video capture device is configured to capture the motion profile of the object: the number of the clamping seats (414) is two, and the clamping seats are arranged up and down.

5. The video capture device of claim 1, wherein the video capture device is configured to capture a motion gesture of an object, and further configured to: the motor fixing shaft (412) is provided with a step ring, and the rotating bearing (411) is sleeved on the step ring.

6. The video capture device of claim 2, wherein the video capture device is configured to capture a motion gesture of an object, and further configured to: a temperature and humidity sensor is integrated on the PCB adapter plate (410), a semiconductor refrigerator (415) is arranged on the rear panel, and the temperature and humidity sensor and the semiconductor refrigerator (415) are both connected with the PCB adapter plate (410).