Camera for industrial intelligent visual acquisition

Abstract

The invention belongs to the technical field of cameras, in particular to a camera for industrial intelligent visual acquisition, and provides the following scheme that the camera comprises a camera main body, a mounting frame is fixed at the top end of the camera main body, a rotating pipe is rotatably arranged on one side of the mounting frame, and two vertically arranged air pipes are communicated with the bottom end of the rotating pipe; and the top end of the rotating pipe communicates with an exhaust pipe, and the rotating pipe is in transmission connection with a motor. Dust collection operation is carried out on the surface of the lens through the pipe opening in the top end of the air pipe, and dust floating in the lower position area is collected through the pipe opening in the bottom end of the air pipe, so that the cleanliness degree of the area between the lens and a workpiece in the shooting operation process is improved; therefore, the accuracy and effectiveness of visual acquisition of workpieces at fixed-point intervals each time are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of cameras, and in particular to a camera used for industrial intelligent visual acquisition. Background Art

[0002] The camera used for industrial vision acquisition is a key component of the industrial vision system. It converts optical images into electrical signals, and then transmits the image data to a computer or other image processing equipment for analysis and processing after digital processing. It often performs visual acquisition on workpieces conveyed at continuous intervals to judge product quality.

[0003] Referring to a Chinese patent with patent announcement number CN214675324U, a camera for industrial intelligent visual acquisition is disclosed, including a camera body, a lens is integrally formed on the camera body, and a fixing ring is integrally formed on the side of the lens of the camera body, connecting slots are symmetrically arranged in the fixing ring, and a positioning circular groove is arranged on the inner side wall of the connecting slot.

[0004] However, in actual industrial production applications, environmental factors or product factors can easily lead to floating debris or particles between the product and the camera. Especially during intermittent shooting and collection, long-term use will affect the accuracy of visual acquisition. Summary of the invention

[0005] Based on the technical problems of the background technology, the present invention proposes a camera for industrial intelligent visual acquisition.

[0006] The present invention proposes a camera for industrial intelligent visual acquisition, including a camera body, a mounting frame fixed on the top of the camera body, a rotating tube rotatably arranged on one side of the mounting frame, the bottom end of the rotating tube is connected to two vertically arranged air ducts, both ends of the air ducts are opened, the top end of the rotating tube is connected to an exhaust pipe, and the rotating tube is transmission-connected to a motor.

[0007] Preferably, a fixing rod is installed at the bottom of the mounting frame, and the fixing rod is located on the side of the camera body away from the rotating tube. Two blades are arranged under the fixing rod, and a rotating drum is fixed to one end of the blade plate close to the fixing rod. The inner wall of the rotating drum and the outer wall of the fixing rod are rotatably connected by a torsion spring, and a limit block is installed on the fixing rod at a position between the two blades.

[0008] Preferably, the distance between the two blades gradually increases from the fixing rod toward the direction of the camera body, and the blades are sequentially arranged into blade one, blade two and blade three from the fixing rod toward the direction of the camera body. Blade one, blade two and blade three are an integrally formed structure, the inclination angle of blade two is smaller than the inclination angles of blade one and blade three, and blade three is located close to the air duct.

[0009] Preferably, a light source is installed on the outer wall of the second blade facing the camera body, and a plurality of dust-sticking strips are installed on the outer wall of the first blade facing the camera body.

[0010] Preferably, the bottom end of the rotating tube is connected to two horizontally placed connecting tubes, the two connecting tubes are symmetrically arranged, one side of the air duct is connected to a horizontally arranged positioning tube, the positioning tube and the connecting tube are rotatably arranged through a bearing, and a plurality of air holes are opened on the outer wall of the air duct.

[0011] Preferably, mounting rods are installed at both ends of the rotating tube at the bottom of the mounting frame, the two mounting rods are located in the area between the two air ducts, a magnetic block is fixed at the bottom end of the mounting rod facing the air duct, and magnetic suction plates are fixed on both sides of the positioning tube outside the air duct, and the positions of the magnetic suction plates and the magnetic blocks correspond.

[0012] Preferably, an air pressure sensor is installed at the bottom where the rotating tube and the connecting tube are connected, and the air pressure sensor is used to monitor the air pressure intensity of the air pumped at the bottom of the rotating tube; the motor is connected to a current monitoring module, and the power monitoring module is used to monitor the current size and fluctuation of the motor.

[0013] Preferably, a torque monitoring module is provided in the rotating drum, and the torque monitoring module is used to monitor the torque of the torsion spring.

[0014] Preferably, the monitoring data of the air pressure sensor, the current monitoring module and the torque monitoring module are uploaded to the central processing unit, and the evaluation coefficient is obtained after comprehensive analysis and calculation. The calculation and judgment logic of the evaluation coefficient is: Step 1: The air pressure sensor obtains the real-time monitored air pressure value , the current monitoring module obtains the current value monitored in real time , the torque monitoring module obtains the real-time monitoring torque value ; Step 2: Define the air pressure deviation rate , Current deviation rate and torque deviation rate ; , where is the average air pressure value under normal conditions; , where is the average current value under normal conditions; , where is the average torque value under normal conditions; Step 3: Calculate the evaluation coefficient , , where , and is the weight coefficient, and ; Step 4: Evaluate the coefficient With the pre-set threshold and For comparison, : when When , it indicates that the dust density under the lens is within the normal range; when When , it indicates that the dust density under the lens begins to increase; when , it indicates that the dust density under the lens is too high.

[0015] Preferably, in step three, , , .

[0016] The beneficial effects of the present invention are: In the present invention, dust is sucked from the lens surface through the nozzle at the top of the air duct, and dust floating in the lower area is absorbed through the nozzle at the bottom of the air duct, so as to improve the cleanliness of the area between the lens and the workpiece during the shooting operation, thereby ensuring the accuracy and effectiveness of visual acquisition of the workpiece at each fixed-point interval.

[0017] In the present invention, the two blades are opened and closed reciprocatingly through the attraction of the moving air duct and the operation of the torsion spring. When shooting, the surrounding airflow can be guided toward the outside away from the lens through the opening operation, and the blades at the two ends are arranged as a whole in an inclined manner to block it, thereby preventing a large amount of external dust from diffusing under the lens and affecting the accuracy of visual acquisition of the workpiece.

[0018] In the present invention, by calculating and analyzing the evaluation coefficients of the deviation rates of various parameters, the current operating status of the equipment can be more accurately reflected, and the production process can be adjusted in time to ensure the stability and consistency of product quality, thereby further improving the effectiveness and accuracy of visual acquisition during long-term working processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall state and structure of a camera for industrial intelligent visual acquisition proposed by the present invention; Figure 2 This is a schematic diagram of the overall state 2 structure of a camera for industrial intelligent visual acquisition proposed by the present invention; Figure 3 This is a schematic diagram of the rotating tube structure of a camera for industrial intelligent visual acquisition proposed by the present invention; Figure 4This is a schematic diagram of the pipe joint position structure of a camera for industrial intelligent visual acquisition proposed by the present invention; Figure 5 This is a schematic diagram of the air duct structure of a camera for industrial intelligent visual acquisition proposed by the present invention; Figure 6 This is a schematic diagram of the cross-sectional structure of the connection pipe position of a camera for industrial intelligent visual acquisition proposed by the present invention; Figure 7 This is a schematic diagram of a fixing rod structure of a camera for industrial intelligent visual acquisition proposed by the present invention; Figure 8 A schematic diagram of the blade structure of a camera for industrial intelligent visual acquisition proposed by the present invention; Fig. 9 This is a schematic diagram of the air duct and blade distribution structure of a camera for industrial intelligent visual acquisition proposed by the present invention.

[0020] In the figure: 1 mounting frame, 2 camera body, 3 rotating tube, 301 connecting tube, 4 air duct, 401 positioning tube, 5 motor, 6 exhaust pipe, 7 pipe joint, 8 gear one, 9 gear two, 10 air hole, 11 fixing rod, 12 blade plate, 121 blade one, 122 blade two, 123 blade three, 13 rotating drum, 14 limiting block, 15 light source, 16 sticky tape, 17 mounting rod, 18 magnetic block, 19 magnetic suction sheet, 20 air pressure sensor. DETAILED DESCRIPTION

[0021] Example 1: Reference Figure 1-Figure 9, a camera for industrial intelligent visual acquisition, includes a camera body 2, a mounting frame 1 for positioning is fixed on the top of the camera body 2, it should be noted that the lens of the camera body 2 is located away from the mounting frame 1, a rotating tube 3 is rotatably arranged on one side of the mounting frame 1, the bottom end of the rotating tube 3 is connected to two vertically arranged air ducts 4, both ends of the air ducts 4 are opened, the top of the rotating tube 3 is connected to an exhaust pipe 6, and the top of the outer wall of the rotating tube 3 is connected to a motor 5 for transmission connection, it should be noted that: a pipe joint 7 is fixed at the position corresponding to the top of the mounting frame 1 and the rotating tube 3, the top of the outer wall of the rotating tube 3 is rotatably connected to the bottom of the pipe joint 7, the exhaust pipe 6 is fixedly connected to the top of the pipe joint 7, the end of the exhaust pipe 6 away from the pipe joint 7 is connected to an air pump through a hose, a gear 8 is fixed on the outer wall of the rotating tube 3, the output of the motor 5 The output shaft is provided with a gear 2 9 meshing with a gear 1 8; during use, the camera body 2 performs interval shooting and collecting operations, and the motor 5 is used to rotate the rotating tube 3 with the two air ducts 4 below, so that the air duct 4 rotates in a circle with a vertical axis outside the camera body 2, and the air duct 4 alternately approaches or moves away from the lens of the camera body 2. When the two air ducts 4 are both outside the camera body 2, the camera body 2 performs shooting and collecting operations. When the air duct 4 rotates to a position close to the lens below the camera body 2, the surface of the lens is vacuumed through the nozzle at the top of the air duct 4, and the dust floating in the lower position area is absorbed through the nozzle at the bottom of the air duct 4, so as to improve the cleanliness of the area between the lens and the workpiece during the shooting operation, thereby ensuring the accuracy and effectiveness of visual collection of the workpiece at each fixed-point interval.

[0022] In the present invention, a fixing rod 11 is installed at the bottom of the mounting frame 1, and the fixing rod 11 is located at a side position of the camera body 2 away from the rotating tube 3. Two blades 12 are arranged below the fixing rod 11, and a rotating drum 13 is fixed to one end of the blade 12 close to the fixing rod 11. The inner wall of the rotating drum 13 is rotatably connected to the outer wall of the fixing rod 11 by a torsion spring. A limiting block 14 is installed at a position between the two blades 12 on the fixing rod 11. The distance between the two blades 12 gradually increases from the fixing rod 11 toward the camera body 2. The blades 12 are sequentially arranged into blade one 121, blade two 122 and blade three 123 from the fixing rod 11 toward the camera body 2. Blade one 121, blade two 122 and blade three 123 are an integrated structure. The inclination angle of blade two 122 is smaller than the inclination angles of blade one 121 and blade three 123. Blade three 123 is located near the air duct 4. It should be noted that: Figure 1 The state 1 shown is a shooting state, in which the two air ducts 4 are at the two ends of the rotating tube 3 and away from the lens, the air holes 10 on the air ducts 4 are at the two sides, and the air holes 10 on one side are just facing the blade 3 123; Figure 2The second state shown is the dust suction state, at this time, one of the air ducts 4 is just under the lens, and the upper and lower ends of the air duct 4 are performing dust suction operations, and the air holes 10 on both sides of the air duct 4 are performing dust suction operations on the surroundings and attracting the position of the second blade 122; thus, during the rotation of the air duct 4, in addition to directly vacuuming the shooting area under the lens, the two blades 12 are reciprocatedly opened and closed through the attraction of the movement of the air duct 4 in conjunction with the torsion spring operation, and when shooting, the surrounding airflow can be guided toward the outside away from the lens through the opening and closing operations, and is blocked by the blades 12 that are tilted as a whole at the two ends, thereby preventing a large amount of external dust from diffusing to the bottom of the lens and affecting the accuracy of visual acquisition of the workpiece.

[0023] In the present invention, a light source 15 is installed on the outer wall of blade 2 122 facing the camera body 2 to assist in increasing the shooting area environment to avoid the influence of light blocking by the blade 12, thereby ensuring the visual acquisition effect; a plurality of sticky dust strips 16 are installed on the outer wall of blade 121 facing the camera body 2. When dust is introduced into one side of the openings of the two blades 12, it will be sucked out by the air duct 4, and when dust is introduced into the position of the rotating drum 13, it can be adhered to by the sticky dust strips 16, thereby improving the effectiveness and accuracy of visual acquisition.

[0024] In the present invention, the bottom end of the rotating tube 3 is connected to two horizontally placed connecting tubes 301, and the two connecting tubes 301 are symmetrically arranged. One side of the air duct 4 is connected to a horizontally arranged positioning tube 401, and the positioning tube 401 and the connecting tube 301 are rotatably arranged through a bearing. The outer wall of the air duct 4 is provided with a plurality of air holes 10. In the process of the air duct 4 rotating in a circle with the rotating tube 3, external dust and airflow will enter from the two ends of the air duct 4 and the outer air holes 10. With the change of airflow as the air duct 4 rotates and the uneven distribution of external floating dust, the air duct 4 will rotate around the positioning tube 401 while the rotating tube 3 rotates around the rotating tube 3. Therefore, the air duct 4 is rotated under the lens of the camera body 2 to improve the dust suction effect of the surrounding environment, so as to further improve the accuracy of visual acquisition after the air duct 4 is away.

[0025] In the present invention, the bottom of the mounting frame 1 is located at both ends of the rotating tube 3 and is equipped with mounting rods 17 extending vertically downward. The two mounting rods 17 are located in the area between the two air ducts 4. A magnetic block 18 is fixed at the bottom of the mounting rod 17 facing the air duct 4. Magnetic sheets 19 are fixed on both sides of the positioning tube 401 outside the air duct 4. The positions of the magnetic sheets 19 and the magnetic blocks 18 correspond. When the two air ducts 4 are rotated to the two end positions of the rotating tube 3, the air ducts 4 are at the position closest to the magnetic blocks 18. Under the action of the magnetic attraction force, the air ducts 4 are kept vertically placed in this state to increase the attraction of the air holes 10 outside the air duct 4 to the blades 12 so that the two blades 12 can be closed. When the air duct 4 is away from the magnetic block 18, the magnetic attraction force is weakened. Under the action of wind force and the uneven distribution of dust, the effectiveness of the rotation of the air duct 4 around the positioning tube 401 is guaranteed.

[0026] Example 2: Reference Figure 1-Figure 9 , a camera for industrial intelligent visual acquisition, based on Example 1, an air pressure sensor 20 is installed at the bottom where the rotating tube 3 and the connecting tube 301 are connected, and the air pressure sensor 20 is used to monitor the air pressure strength of the air pumped at the bottom of the rotating tube 3. When there is too much dust floating in the air cavity around the bottom of the lens, the denser the dust sucked into the connecting tube 301 and the rotating tube 3, the smaller the air pressure will be; if the air pressure is too low, it may mean that there is too much dust under the lens, which will affect the accuracy of shooting, and it is necessary to remind the staff in time; Motor 5 is connected to a current monitoring module, and the power monitoring module is used to monitor the current size and fluctuation of motor 5. Motor 5 rotates in a circle with rotating tube 3 and air duct 4. When the dust in the chamber below the lens is too dense, the resistance to the rotation of air duct 4 will increase, thereby increasing the load of motor 5, and will also cause the data monitored by the current monitoring module to change; when the current value is too large, the surface may have too dense external dust, which will affect the visual acquisition effect, and the staff needs to be reminded in time.

[0027] In the present invention, a torque monitoring module is provided in the rotating drum 13, and the torque monitoring module is used to monitor the torque of the torsion spring. The attraction generated during the rotation of the air duct 4 causes the two blades 12 to open and close. The blades 12 will squeeze the torsion spring during the inward deflection process to increase the torque. If there is too much dust floating under the lens and the resistance encountered by the blades 12 is too great, the deflection angle will be reduced compared to the conventional one, that is, the torque will become smaller; if the torque is too small, the surface may be too dense with external dust, which will affect the visual collection effect, and the staff needs to be reminded in time.

[0028] In the present invention, the monitoring data of the air pressure sensor 20, the current monitoring module and the torque monitoring module are uploaded to the central processing unit, and the evaluation coefficient is obtained after comprehensive analysis and calculation. The calculation and judgment logic of the evaluation coefficient is: Step 1: The air pressure sensor 20 obtains the real-time monitored air pressure value It should be noted that the air pressure value can be the average value during the period when the air duct 4 rotates from the position directly below the lens to the end position of the rotating tube 3, and the current monitoring module obtains the current value monitored in real time. It should be noted that the current value can be the average value during the period when the air duct 4 rotates from the position directly below the lens to the end position of the rotating tube 3, and the torque monitoring module obtains the torque value monitored in real time. It should be noted that the torque value can be the average value or the maximum value in the time period when the air duct 4 rotates from the position directly below the lens to the end of the rotating tube 3; Step 2: Define the air pressure deviation rate , Current deviation rate and torque deviation rate ; , where is the average air pressure value under normal conditions, which can be determined in advance through experiments; , where is the average current value under normal conditions, which can be predetermined by experiment; , where is the average torque value under normal conditions, which can be determined in advance through experiments; Step 3: Calculate the evaluation coefficient , , where , and is the weight coefficient, and ; ,when Relative to When it is larger, it means that the pressure change has a more significant impact on the overall situation. will approach 1; on the contrary, Relative to When larger, will approach 0; , which makes Will follow Relative to The size of When larger, will approach 1, indicating that the weight of current change in the overall evaluation increases; when When larger, will approach 0; , so that the influence of dust conditions under the lens on visual acquisition effect can be comprehensively evaluated more accurately according to the changes in different monitoring data, and the weight coefficient can be adjusted to improve the accuracy and effectiveness of the evaluation coefficient calculation and judgment; Step 4: Evaluate the coefficient With the pre-set threshold and For comparison, : when When the system is in normal state, it means that the dust density under the lens is within the normal range and will not have a significant impact on the visual acquisition effect. The system can continue to work normally. when When the system is in the early warning state, it means that the dust density under the lens begins to increase, which may have a certain impact on the visual acquisition effect. At this time, the system should send out an early warning signal to remind the staff to pay attention to the dust situation; when When the system is in an abnormal state, it means that the dust density under the lens is too high, which will seriously affect the accuracy and effectiveness of visual acquisition. The system should immediately stop the visual acquisition operation and issue an alarm signal; By calculating and analyzing the evaluation coefficients of these parameter deviation rates, the current operating status of the equipment can be more accurately reflected, and the production process can be adjusted in a timely manner to ensure the stability and consistency of product quality, thereby further improving the effectiveness and accuracy of visual acquisition during long-term working processes.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A camera for industrial intelligent visual acquisition, comprising a camera body (2), a mounting frame (1) being fixed to the top of the camera body (2), characterized in that: A rotating tube (3) is rotatably arranged on one side of the mounting frame (1); the bottom end of the rotating tube (3) is connected to two vertically arranged air ducts (4); both ends of the air ducts (4) are open; the top end of the rotating tube (3) is connected to an exhaust pipe (6); and the rotating tube (3) is transmission-connected to a motor (5).

2. A camera for industrial intelligent visual acquisition according to claim 1, characterized in that: A fixing rod (11) is installed at the bottom of the mounting frame (1), and the fixing rod (11) is located at a side of the camera body (2) away from the rotating tube (3). Two blades (12) are arranged below the fixing rod (11), and a rotating cylinder (13) is fixed to one end of the blade (12) close to the fixing rod (11). The inner wall of the rotating cylinder (13) is rotatably connected to the outer wall of the fixing rod (11) via a torsion spring, and a limit block (14) is installed at a position between the two blades (12) on the fixing rod (11).

3. The camera for industrial intelligent visual acquisition according to claim 2, characterized in that: The distance between the two blades (12) gradually increases from the fixing rod (11) toward the camera body (2); the blades (12) are sequentially arranged from the fixing rod (11) toward the camera body (2) into blade one (121), blade two (122) and blade three (123); blade one (121), blade two (122) and blade three (123) are an integrally formed structure; the inclination angle of blade two (122) is smaller than the inclination angles of blade one (121) and blade three (123); and blade three (123) is located close to the air duct (4).

4. The camera for industrial intelligent visual acquisition according to claim 3, characterized in that: The outer wall of the second blade (122) facing the camera body (2) is equipped with a light source (15), and the outer wall of the first blade (121) facing the camera body (2) is equipped with a plurality of dust sticking strips (16).

5. A camera for industrial intelligent visual acquisition according to any one of claims 2 to 4, characterized in that: The bottom end of the rotating tube (3) is connected to two horizontally placed connecting tubes (301), the two connecting tubes (301) are symmetrically arranged, one side of the air duct (4) is connected to a horizontally arranged positioning tube (401), the positioning tube (401) and the connecting tube (301) are rotatably arranged via a bearing, and a plurality of air holes (10) are provided on the outer wall of the air duct (4).

6. The camera for industrial intelligent visual acquisition according to claim 5, characterized in that: The bottom of the mounting frame (1) is located at both ends of the rotating tube (3) and is provided with mounting rods (17), the two mounting rods (17) are located in the area between the two air ducts (4), a magnetic block (18) is fixed at the position of the bottom end of the mounting rod (17) facing the air duct (4), and magnetic suction plates (19) are fixed on both sides of the positioning tube (401) outside the air duct (4), and the positions of the magnetic suction plates (19) and the magnetic blocks (18) correspond.

7. The camera for industrial intelligent visual acquisition according to claim 5, characterized in that: An air pressure sensor (20) is installed at the bottom end where the rotating tube (3) and the connecting tube (301) are connected. The air pressure sensor (20) is used to monitor the air pressure intensity of the air pumped at the bottom end of the rotating tube (3); The motor (5) is connected to a current monitoring module, and the power monitoring module is used to monitor the current magnitude and fluctuation of the motor (5).

8. The camera for industrial intelligent visual acquisition according to claim 7, characterized in that: A torque monitoring module is arranged in the rotating drum (13), and the torque monitoring module is used to monitor the torque magnitude of the torsion spring.

9. The camera for industrial intelligent visual acquisition according to claim 8, characterized in that: The monitoring data of the air pressure sensor (20), the current monitoring module and the torque monitoring module are uploaded to the central processing unit, and the evaluation coefficient is obtained after comprehensive analysis and calculation. The calculation and judgment logic of the evaluation coefficient is: Step 1: The air pressure sensor (20) obtains the real-time monitored air pressure value , the current monitoring module obtains the current value monitored in real time , the torque monitoring module obtains the real-time monitored torque value ; Step 2: Define the air pressure deviation rate , Current deviation rate and torque deviation rate ; , where is the average air pressure value under normal conditions; , where is the average current value in normal state; , where is the average torque value under normal conditions; Step 3: Calculate the evaluation coefficient , , where , and is the weight coefficient, and ; Step 4: Evaluate the coefficient With the pre-set threshold and For comparison, : when When , it indicates that the dust density under the lens is within the normal range; when When , it indicates that the dust density under the lens begins to increase; when , it indicates that the dust density under the lens is too high.

10. The camera for industrial intelligent visual acquisition according to claim 9, characterized in that: In step three, , , .

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