CN215263150U - Line cabinet terminal on-off state detection device based on machine vision - Google Patents
Line cabinet terminal on-off state detection device based on machine vision Download PDFInfo
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- CN215263150U CN215263150U CN202120574682.2U CN202120574682U CN215263150U CN 215263150 U CN215263150 U CN 215263150U CN 202120574682 U CN202120574682 U CN 202120574682U CN 215263150 U CN215263150 U CN 215263150U
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Abstract
The utility model discloses a line cabinet terminal break-make state detection device based on machine vision, constitute including calculation workstation A, next machine B, detection mechanism C, driver D, DC power supply E. Install image processing procedure in the line cabinet terminal on-off state detection device based on machine vision calculates workstation A, and the image processing procedure is handled the image that camera module and light source 3 gathered, draws the positional information of the line cabinet terminal that awaits measuring to under workstation A's control is calculated, according to the detection needs, automatic control three-coordinate slip table 1 accomplishes the detection of line cabinet terminal on-off state with detection mechanism 4. The utility model provides a detection device can replace artifical the detection, reduces intensity of labour, improves detection efficiency, increases enterprise's production and detects degree of automation.
Description
Technical Field
The utility model belongs to the technical field of machine vision detects, especially relates to machine vision and automated inspection technique, belongs to machine vision and automated inspection field, specifically is a line cabinet terminal break-make state detection device based on machine vision.
Background
Machine vision mainly adopts a computer to simulate the visual function of a human to extract information from an image of an objective object, processes and understands the information, and finally, the information is used for actual detection, measurement and control, so that the labor productivity can be greatly improved. The detection of line cabinet terminal break-make state is generally observed and cooperate measuring tool such as using the universal meter by the manual work through the people's eye and is accomplished, and measurement personnel not only need possess abundant detection work experience and good logical thinking, and the testing process keeps high attention all the time moreover. In the process of mass detection, detection personnel are easy to generate visual fatigue, so that the detection efficiency and accuracy are reduced, and the adverse phenomena of missed detection, wrong detection and the like are inevitable. The line cabinet terminal on-off state detection device based on machine vision provides a more efficient and accurate solution for the detection problem.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's shortcoming and not enough, provide a line cabinet terminal break-make state detection device based on machine vision convenient, reliable, that the application is wide for solve the unreliable of current artifical mode detection line cabinet terminal break-make state, inefficiency, the problem of high cost.
For solving the above-mentioned detection problem, the utility model discloses a concrete technical scheme as follows:
the utility model provides a line cabinet terminal break-make state detection device based on machine vision, including calculation workstation A, next computer B, machine vision detection mechanism C, driver D, DC power supply E, camera module 3 with the light source gathers line cabinet binding post's image after demarcating, the image that camera module and light source 3 gathered is transmitted for calculation workstation A through the cable conductor, the image processing software of installation in calculation workstation A calls corresponding image processing storehouse, carry out preprocessing such as filtering to the image after, and then cut apart the discernment analysis to the image, thereby extract each binding post's positional information, then according to the line cabinet terminal wiring break-make truth table of typing in advance, detect each terminal in proper order.
Furthermore, the detection mechanism 4 is composed of a servo motor 5, a coupler 6, a connecting rod 16, a deep groove ball bearing 18, a linear electronic push rod 8, a cross rod 9, a side rod 10, an insulating probe rod 11, a sleeve pin 12, a connecting rod 13, a connecting rod 14 and a connecting rod 15. The servo motor 5 is fixed on the bottom plate through a motor bracket, a rotating shaft of the servo motor 5 is connected with a connecting rod 16 through a coupling 6, the connecting rod 16 is connected with a bottom cover 17 of a linear electronic push rod 8 through a pin shaft, a deep groove ball bearing 18 is sleeved on the linear electronic push rod 8, the deep groove ball bearing 18 is sleeved on a bearing bracket 7 of the bottom plate and a front end cover of the bottom plate, an arc-shaped end of a cross rod 9 is fastened on the linear electronic push rod 8 through a bolt, the other end of the cross rod is hinged with a side lever 10 through the pin shaft, the other end of the side lever 10 is hinged with a connecting rod 13 through a sleeve pin 12, an insulating probe rod 11, the connecting rod 13, the connecting rod 14 and the connecting rod 15 form a parallelogram structure through hinge connection, the insulating probe rod 11 can be always parallel to the connecting rod 15, therefore, the probe rod is always in vertical contact with the terminal of the line cabinet in the detection process, so that the probe 20 is ensured to be in vertical close contact with the wiring terminal in the detection process.
Further, the insulating probe rod 11 is hollow, the probe 20 is connected with the lower computer B through a lead, and the spring 19 is arranged between the probe 20 and the inner wall of the insulating probe rod 11 to play a role in buffering and pressurizing.
Furthermore, the symmetrical detection front fork mechanism consists of a linear electronic push rod 8, a cross rod 9, a side rod 10, an insulating probe rod 11, a sleeve pin 12, a connecting rod 13, a connecting rod 14 and a connecting rod 15, and can rotate by a corresponding angle along with the rotating shaft of the servo motor 5 under the driving of the rotating shaft of the servo motor 5; under sharp electron push rod 8's drive, the opening of front fork mechanism can be followed straight line electron push rod 8's reciprocating motion grow or diminish along with the symmetry, and opening size and push rod elongation exist mathematical function relation, as shown in fig. 7, the utility model discloses the position relation of 8 movements of well sharp electron push rod and probe can be represented by the following formula:
wherein L is4The distance from the hinge center of the connecting rod 13 and the connecting rod 15 to the axis of the cross rod 9 is shown; l is1Indicating the distance between the centers of the two hinges on the side bar 10; l is3The distance from the hinge center of the cross bar 9 and the side bar 10 to the axis of the linear electronic push rod 8 is shown; l is2Represents the distance between the centers of the two hinges on the connecting rod 13; l represents the distance of the probe axis to the axis of the connecting rod 15.
The beneficial effects of the utility model reside in that:
1. the utility model discloses can guarantee under the unchangeable circumstances of camera measuring position, accurate positioning control detects the removal of front fork type mechanism and accomplishes the detection task of line cabinet terminal break-make state, compares with artifical detection, and the false retrieval and the rate of missing the inspection greatly reduced, and efficiency is higher; compare in detection device based on arm, the utility model discloses use cost and maintenance cost are lower.
2. The utility model discloses the probe that detects the front fork adopts parallelogram mechanism, detects in the motion process, can remain probe rod 11 throughout parallel with connecting rod 15, and probe rod 11 is perpendicular all the time and the terminal that awaits measuring promptly for probe 20 is good with the terminal contact that awaits measuring, has avoided because contact failure leads to the condition emergence of false retrieval.
3. The utility model discloses a detect front fork adopts the member articulated, compact structure, easily dismouting, be convenient for maintain not only, and the motion precision is higher moreover.
4. The utility model discloses a holding frame of collection camera can use in more camera models, and image acquisition mode can change monocular, two mesh and structured light etc. according to the demand, has wider application.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a line cabinet terminal on-off state detection device based on machine vision;
FIG. 2 is an overall structure diagram of a machine vision detection mechanism of the wire cabinet terminal on-off state detection device based on machine vision;
FIG. 3 is an overall structure diagram of a detection execution end of the line cabinet terminal on-off state detection device based on machine vision;
FIG. 4 is a diagram of a machine vision-based detection front fork rotational degree of freedom implementation structure of a line cabinet terminal on-off state detection device;
FIG. 5 is a front fork structure diagram of a detection device for detecting the on-off state of a line cabinet terminal based on machine vision;
FIG. 6 is a cross-sectional view of an insulating probe rod of the wire cabinet terminal on-off state detection device based on machine vision;
FIG. 7 is a schematic diagram of a machine vision-based calculation of a detection front fork opening of a line cabinet terminal on-off state detection device;
fig. 8 is a schematic diagram of the overall main control flow of the line cabinet terminal on-off state detection device based on machine vision.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described below with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The following describes the specific structure and embodiments of the present invention with reference to the accompanying drawings. The system of the utility model is as shown in figure 1-figure 6, and adopts the following scheme:
the utility model provides a line cabinet terminal break-make state detection device based on machine vision, includes that calculation workstation A, next computer B, DC power supply E, driver D, three-coordinate slip table 1, warning light 2, camera module and light source 3, detection mechanism 4 constitute as shown in figure 1 and figure 2. The computing workbench A and the lower computer B are programmed to control the driver D, the driving motor drives the detection mechanism 4 to realize three-coordinate movement, and the linear electronic push rod 8 drives the detection mechanism 4 to realize a detection task; the driver D is powered by a direct current power supply E and receives an instruction of the lower computer B to drive the three-coordinate sliding table motor, the servo motor 5 and the linear electronic push rod 8 to move; the camera module and the light source 3 collect image information for the computing workstation a.
The structure for realizing the rotational freedom degree of the front fork is shown in fig. 4, a servo motor 5 is fixed on a bottom plate through a motor support, a rotating shaft of the servo motor 5 is connected with a connecting rod 16 through a coupler 6, the connecting rod 16 is connected with a bottom cover 17 of a linear electronic push rod 8 through a pin shaft, a deep groove ball bearing 18 is sleeved on the linear electronic push rod 8, and the deep groove ball bearing 18 is sleeved on a bearing support 7 of the bottom plate and a front end cover of the bottom plate. Under the drive of the rotation shaft of the servo motor 5, a symmetrical detection front fork mechanism formed by the linear electronic push rod 8, the cross rod 9, the side rod 10, the insulating feeler lever 11, the sleeve pin 12, the connecting rod 13, the connecting rod 14 and the connecting rod 15 can rotate by a corresponding angle along with the rotation shaft of the servo motor 5.
The detection front fork structure is as shown in fig. 5, the insulating probe rod 11, the connecting rod 13, the connecting rod 14 and the connecting rod 15 are connected through hinges to form a parallelogram structure, so that the insulating probe rod 11 can be always parallel to the connecting rod 15, the probe rod is always in vertical contact with a terminal of a line cabinet in a detection process, and a probe 20 can be ensured to be vertically and tightly contacted with a wiring terminal in the detection process.
The insulating probe rod structure is as shown in fig. 6, the insulating probe rod 11 is hollow, the probe 20 is connected with the lower computer B through a wire, and the spring 19 is installed between the probe 20 and the inner wall of the insulating probe rod 11 to play a role in buffering and pressing.
Fig. 3 shows an overall structure of the probing execution end, and the probing execution end includes the probing front fork rotational freedom implementation structure of fig. 4, the probing front fork structure of fig. 5, and the insulating probe structure of fig. 6.
The detection principle is as follows:
the device is arranged right in front of a wire cabinet to be detected, after the device is installed, a recorded truth table of wire cabinet terminal connection is recorded and a camera is calibrated, after the camera is calibrated, a computing workstation A shoots the wire cabinet terminal, then the computing workstation A processes the obtained image and selects two terminals a and B to be detected, image processing software analyzes the position information of the terminals a and B, further analyzes an acute angle theta between a straight line passing through the centers of the terminals a and B and a horizontal line and the position information of a midpoint c of the centers of the terminals a and B, analyzes a motion instruction according to the truth table of wire cabinet terminal connection recorded in advance, then transmits the position information of the acute angle theta and the midpoint c, the distance L between the center of the terminal a and the midpoint c and the motion instruction to a lower computer B through a serial port, and the lower computer B receives the motion instruction transmitted by the computing workstation A, sending a corresponding control signal to a driver D, under the control of the control signal, the driver D firstly drives the three-coordinate sliding table 1 to move, so that the axis of the front fork connecting rod 15 passes through the middle point c, then drives the servo motor 5 to rotate, so that the included angle between the axis of the front fork cross rod 9 and the horizontal line is an acute angle theta, drives the linear electronic push rod 8 to move, so that the distance between the axis of the probe 20 and the axis of the connecting rod 15 is L, at the moment, the two probes 20 are just positioned right in front of the wiring terminal to be tested and are vertical to the plane where the wiring terminal is positioned, then drives the three-coordinate sliding table 1 to move, so that the two probes 20 are reliably contacted with the terminals a and B to be tested, the two IO ports PB0 and PB1 of the lower computer B are respectively connected with the two probes 20 through lines, and a program in the lower computer B enables one IO port PB0 connected with the probes 20 to output a square wave signal, IO port PB1 connected to the other probe 20 serves as a high impedance input port. During detection, the IO port PB1 detects a square wave signal output from the IO port PB0, and if the IO port PB1 detects a square wave signal output from the IO port PB0, it is determined that both terminals are in a conductive state, and conversely, it is determined that the terminals are not in a conductive state. After the detection is finished, the lower computer B transmits the detection result to the calculation workstation A through the serial port for recording, the on-off state is displayed through the warning lamp 2, finally, the three-coordinate sliding table 1 retreats to the initial position to finish the one-time detection, and the lower computer B waits for the next detection movement instruction of the calculation workstation A. The overall main control flow diagram is shown in fig. 8.
Claims (4)
1. The utility model provides a line cabinet terminal break-make state detection device based on machine vision which characterized in that: the system comprises a computing workstation (A), a lower computer (B), a machine vision detection mechanism (C), a driver (D) and a direct-current power supply (E); the whole detection device can be divided into three parts, wherein one part is mainly used for image processing and consists of a computing workstation (A), a camera module and a light source (3), and an image processing program installed in the computing workstation (A) is used for extracting and analyzing machine vision information from image information acquired by the camera module and the light source (3); the other part is mainly controlled and consists of a computing workstation (A), a lower computer (B) and a driver (D), wherein the computing workstation (A) and the lower computer (B) perform motion control on the driver which is connected with the three-coordinate sliding table (1) and the detection mechanism (4) according to the information extracted by image processing; the third part is mainly used for detection and consists of a computing workstation (A), a lower computer (B), a detection mechanism (4) and a warning lamp (2); the image information of a wiring cabinet wiring terminal is collected by the computing workstation (A) through the camera module, a motion instruction is sent to drivers of the three-coordinate sliding table (1) and the detection mechanism (4) through the identification analysis of images, after a probe reaches a designated position, an on-off detection circuit formed by the lower computer (B) and the detection mechanism (4) detects the on-off state of the terminal, the on-off state information is sent to the computing workstation (A) for identification recording, and on-off state warning is carried out through the warning lamp (2).
2. The machine vision-based line cabinet terminal on-off state detection device of claim 1, characterized in that: the detection mechanism (4) comprises a servo motor (5), a coupler (6), a connecting rod (16), a deep groove ball bearing (18), a linear electronic push rod (8) and a symmetrical detection front fork mechanism consisting of a cross rod (9), a side rod (10), an insulating probe rod (11), a sleeve pin (12) and connecting rods (13, 14 and 15), wherein the servo motor (5) is fixed on a bottom plate through a motor support, a rotating shaft of the servo motor (5) is connected with the connecting rod (16) through the coupler (6), the connecting rod (16) is connected with a bottom cover (17) of the linear electronic push rod (8) through a pin shaft, the linear electronic push rod (8) is sleeved with the deep groove ball bearing (18), the deep groove ball bearing (18) is sleeved on a bearing support (7) of the bottom plate and the front end cover of the bottom plate, the arc-shaped end of the cross rod (9) is fastened on the linear electronic push rod (8) through a bolt, the other end of the side rod (10) is hinged with a side rod (10) through a pin shaft, the other end of the side rod (10) is hinged with a connecting rod (13) through a sleeve pin (12), and the insulating probe rod (11) and the connecting rods (13, 14 and 15) are hinged to form a parallelogram structure.
3. The machine vision-based line cabinet terminal on-off state detection device as claimed in claim 1 and claim 2, wherein: under the rotation drive of a rotating shaft of the servo motor (5), a symmetrical detection front fork mechanism consisting of a linear electronic push rod (8), a cross rod (9), a side rod (10), an insulating probe rod (11), a sleeve pin (12) and connecting rods (13, 14 and 15) can rotate by a corresponding angle along with the rotating shaft of the servo motor (5); under the drive of the linear electronic push rod (8), the opening of the symmetrical detection front fork mechanism consisting of the linear electronic push rod (8), the cross rod (9), the side rod (10), the insulating probe rod (11), the sleeve pin (12) and the connecting rods (13, 14 and 15) can be enlarged or reduced along with the reciprocating motion of the linear electronic push rod (8), and the opening size and the extension amount of the push rod have mathematical function relation.
4. The machine vision-based line cabinet terminal on-off state detection device as claimed in claim 1 and claim 2, wherein: the insulating probe rod (11) and the connecting rods (13, 14 and 15) are connected through hinges to form a parallelogram structure, so that the insulating probe rod (11) can be always parallel to the connecting rods (15), the probe rod is always in vertical contact with a terminal of a line cabinet in the detection process, and the probe (20) can be ensured to be vertically and tightly contacted with a wiring terminal in the detection process; the insulating probe rod (11) is hollow, the probe (20) is connected with the lower computer (B) through a wire, and the spring (19) is arranged between the probe (20) and the inner wall of the insulating probe rod (11) to play a role in buffering and pressing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120574682.2U CN215263150U (en) | 2021-03-22 | 2021-03-22 | Line cabinet terminal on-off state detection device based on machine vision |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120574682.2U CN215263150U (en) | 2021-03-22 | 2021-03-22 | Line cabinet terminal on-off state detection device based on machine vision |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112858303A (en) * | 2021-03-22 | 2021-05-28 | 长春工业大学 | Line cabinet terminal on-off state detection device based on machine vision |
| CN115308458A (en) * | 2022-09-13 | 2022-11-08 | 渭南木王智能科技股份有限公司 | Parallel multi-position on-off synchronous control probe module |
| CN116417876A (en) * | 2023-06-12 | 2023-07-11 | 福建（泉州）哈工大工程技术研究院 | Automatic operation executing device, robot and automatic operation method for switch cabinet |
-
2021
- 2021-03-22 CN CN202120574682.2U patent/CN215263150U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112858303A (en) * | 2021-03-22 | 2021-05-28 | 长春工业大学 | Line cabinet terminal on-off state detection device based on machine vision |
| CN112858303B (en) * | 2021-03-22 | 2024-08-06 | 长春工业大学 | Line cabinet terminal on-off state detection device based on machine vision |
| CN115308458A (en) * | 2022-09-13 | 2022-11-08 | 渭南木王智能科技股份有限公司 | Parallel multi-position on-off synchronous control probe module |
| CN115308458B (en) * | 2022-09-13 | 2024-03-19 | 渭南木王智能科技股份有限公司 | Parallel multi-bit on-off synchronous control probe module |
| CN116417876A (en) * | 2023-06-12 | 2023-07-11 | 福建（泉州）哈工大工程技术研究院 | Automatic operation executing device, robot and automatic operation method for switch cabinet |
| CN116417876B (en) * | 2023-06-12 | 2023-08-29 | 福建（泉州）哈工大工程技术研究院 | Automatic operation executing device, robot and automatic operation method for switch cabinet |
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