A real-time pressure gauge camera acquisition device

Abstract

The present invention belongs to the technical field of intelligent monitoring of pressure gauges, and specifically relates to a real-time pressure gauge video acquisition device, comprising a main bracket, a video acquisition sub-machine is mounted on the main bracket through a first sub-bracket, the main bracket is fixedly connected to a bracket body opposite to the video acquisition sub-machine through a second sub-bracket, the bracket body is annular in structure, and the center of the bracket body overlaps with the center of the pressure gauge body, a plurality of scale identification units are mounted on the bracket body, a plurality of different feature points are respectively arranged on the plurality of scale identification units, the scale identification unit comprises a calibration block mounted on the bracket body, a marking body is detachably mounted on the calibration block, the feature points are arranged on the marking body, a mounting groove is provided on the calibration block with an upper opening, and the marking body is mounted inside the mounting groove. The present invention can reduce the image data processed when the pressure gauge pressure value is recognized according to the image after the pressure gauge image is acquired.

Description

Technical Field

[0001] The invention belongs to the technical field of intelligent monitoring of pressure gauges, and in particular relates to a real-time pressure gauge camera acquisition device. Background Art

[0002] Traditionally, in order to realize remote real-time acquisition of pressure gauge readings, a video acquisition device is usually used to capture images and transmit them to a host computer. The host computer uses image recognition technology to match the image with the pointer and pressure scale in the host database, thereby identifying the pressure scale and pointer of the pressure gauge in the image, determining the pressure value, and converting the value on the pressure gauge into a numerical value for transmission to the host computer inside the monitoring room. The host computer performs intelligent monitoring and alarm on the pressure value of the pressure gauge.

[0003] During the entire recognition process, a large number of pointer and pressure scale line images in the database need to be matched, resulting in a large amount of image data being processed when recognizing the pressure value of the pressure gauge in the pressure gauge image. Summary of the invention

[0004] The object of the present invention is to provide a real-time pressure gauge video acquisition device, which can reduce the image data processed when identifying the pressure value of the pressure gauge in the pressure gauge image by combining mechanical and image recognition.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A real-time pressure gauge video acquisition device comprises a main bracket, on which a video acquisition sub-machine is mounted via a first sub-bracket, the main bracket is fixedly connected to a bracket body opposite to the video acquisition sub-machine via a second sub-bracket, the bracket body is annular in structure, and the center of the bracket body overlaps with the center of the pressure gauge body, and a plurality of scale identification units are mounted on the bracket body.

[0007] Furthermore, a plurality of different characteristic points are respectively set on the plurality of scale marking units.

[0008] Furthermore, the scale marking unit comprises a calibration block mounted on a bracket body, a marking body is detachably mounted on the calibration block, and the characteristic point is arranged on the marking body.

[0009] Furthermore, the calibration block is provided with a mounting groove with an upper opening, and the marker body is installed inside the mounting groove.

[0010] Furthermore, one end of the calibration block is open;

[0011] The interior of the sign body is provided with an accommodating cavity with a lower opening, and the interior of the accommodating cavity is provided with a first return spring and a positioning block in sequence from top to bottom, and the first return spring can push the positioning block out of the interior of the accommodating cavity, and the positioning block is a combination structure of a cylinder and a semicircular body, the cylinder is slidably connected to the interior of the accommodating cavity, and the upper side of the cylinder and the lower end of the first return spring are abutted, and the semicircular body is fixedly connected to the lower side of the cylinder, and a positioning hole is provided on the inner wall of the lower side of the mounting groove, and the semicircular body of the positioning block can enter the interior of the positioning hole under the thrust of the first return spring;

[0012] Slide bars are provided on both sides of the installation groove, and slide bars are fixedly connected on both sides of the sign body. The two slide bars are respectively slidably connected inside the two slide bars.

[0013] Furthermore, a plurality of support seats with adjustable positions are mounted on the support body on the outer side of the support body, and a plurality of the calibration blocks are respectively fixedly connected to the plurality of support seats.

[0014] Furthermore, an arc-shaped inner groove is provided inside the bracket seat, the bracket body is an annular plate, the bracket seat is slidably connected to the outer side of the bracket body through the arc-shaped inner groove, and a threaded hole passing through the bracket seat is provided on the bracket seat, and a positioning screw is threadedly connected inside the threaded hole, and the positioning screw can be counteracted with the bracket body, and arc-shaped elastic spokes are fixedly connected between two adjacent bracket seats.

[0015] Furthermore, the main bracket includes an outer ring, the center of the outer ring overlaps with the center of the bracket body, the first sub-bracket and the second sub-bracket are fixedly connected to the outer ring, and the circumferential side of the outer ring is equipped with multiple horizontal adjustment parts, and the multiple horizontal adjustment parts are equipped with clips located inside the outer ring.

[0016] The technical effects achieved by the present invention are:

[0017] A real-time pressure gauge video acquisition device of the present invention utilizes a mechanical structure scale identification unit with known features to replace the pressure scale line with unknown features, thereby reducing the process of retrieving the pressure gauge scale line in the database and comparing the pressure scale line with the image during the image recognition process, thereby reducing the image data processed when the pressure gauge pressure value is recognized according to the image after the pressure gauge image is acquired. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention when it is used;

[0019] Figure 2 It is a schematic diagram of the structure when the present invention is not in use;

[0020] Figure 3It is a structural schematic diagram of the auxiliary marking group of the present invention;

[0021] Figure 4 It is a structural schematic diagram of the scale marking unit of the present invention;

[0022] Figure 5 It is a schematic diagram of the structure of the sign body of the present invention when it is disassembled and assembled;

[0023] Figure 6 It is a schematic diagram of a partial cross-section structure of a scale marking unit of the present invention;

[0024] Figure 7 The present invention Figure 6 A partial enlarged view of the middle A;

[0025] Figure 8 It is a top view of the structure of the scale identification unit of the present invention;

[0026] Fig. 9 It is a schematic diagram of the structure when the scale identification unit of the present invention is inverted;

[0027] Fig.10 It is a structural schematic diagram of the main support of the present invention.

[0028] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0029] 1. Main bracket; 2. First sub-bracket; 3. Video acquisition sub-machine; 4. Second sub-bracket; 5. Bracket body; 6. Bracket seat; 7. Arc-shaped elastic spokes; 8. Calibration block; 9. Marking body; 10. Groove; 11. Arc-shaped inner groove; 12. Mounting groove; 13. Slide groove; 14. Slide bar; 15. Accommodating cavity; 16. First return spring; 17. Positioning block; 18. Positioning hole; 19. Positioning screw; 20. Outer ring; 21. Slide rod; 22. Clip; 23. Second return spring; 24. Finger ring; 25. Pressure gauge body; 26. Pointer body; 27. Pressure scale line. DETAILED DESCRIPTION

[0030] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention, and does not strictly limit the scope of protection of the specific claims of the present invention.

[0031] like Figure 1 As shown, the structure of a pressure gauge is disclosed herein, the pressure gauge comprises a pressure gauge body 25, the upper side of the pressure gauge body 25 is provided with a pointer body 26 and a pressure scale composed of a plurality of pressure scale lines 27, when the pressure detected by the pressure gauge body 25 is different, the pointer body 26 points to different pressure scale lines 27, which can represent different pressure values;

[0032] like Figure 1-10 As shown, a real-time pressure gauge video acquisition device includes a sub-machine, which is connected to a host compatible with it. The host can receive image data, recognize the image, and determine the pressure value detected by the pressure gauge. The sub-machine includes a main bracket 1, and a video acquisition sub-machine 3 is installed on the main bracket 1 through a first sub-bracket 2. The video acquisition sub-machine 3 includes a camera and an information transmission unit. The information transmission unit and the host are connected by wire or wirelessly. When the camera captures the image of the pointer body 26 and the pressure scale line 27, the image can be transmitted to the host through the information transmission unit.

[0033] When the main bracket 1 and the pressure gauge body 25 are connected, the camera acquisition sub-machine 3 can be fixed at a position opposite to the pressure scale line 27. At this time, the pointer body 26 and the pressure scale line 27 can be photographed by the camera acquisition sub-machine 3, and then the image is recognized by the host to identify the pressure value pointed by the pointer body 26, thereby realizing remote monitoring of the pressure value of the pressure gauge body 25.

[0034] The core of the present technical solution is that in order to reduce the image data processed during image recognition, the main bracket 1 is provided with an auxiliary mark group, and the auxiliary mark group includes a second sub-bracket 4 fixedly connected to the main bracket 1, and the second sub-bracket 4 is fixedly connected with a bracket body 5 located on the upper side of the pressure gauge body 25, the bracket body 5 is opposite to the camera acquisition sub-machine 3, and is located in the image acquisition area of ​​the camera acquisition sub-machine 3, the bracket body 5 is annular in structure, and the center of the bracket body 5 overlaps with the center of the pressure gauge body 25, and a plurality of scale identification units are assembled on the bracket body 5, and the scale identification units are opposite to the pressure scale line 27, and are arranged to overlap and replace the pressure scale line 27 relative thereto.

[0035] When the camera acquisition sub-machine 3 captures images and transmits them to the host, the host only needs to compare the different pointers and pointer bodies 26 in the host database, identify the pointer body 26, and then identify the relative positions of the pointer body 26 and multiple scale identification units to identify the pressure value of the pressure gauge. Since the scale identification unit is a workpiece of a known shape, the host can directly identify the scale identification unit in the image, reducing the number of scale lines of different shapes that need to be stored in the database, and reducing the steps of comparing scale lines of different shapes in the database with the image, thereby effectively reducing the image data processed when identifying the pressure value of the pressure gauge based on the captured image.

[0036] Among them, multiple different characteristic points are respectively set on the multiple scale identification units, and the multiple characteristic points can represent multiple pressure values, so that when the host recognizes the characteristic points, it can directly determine the pressure value that the scale identification unit can point to.

[0037] Here, the feature point can be color, shape or a combination of color and shape, that is, multiple scale identification units are provided with features of different colors, or multiple scale identification units are provided with features of different shapes, or multiple scale identification units are provided with features of different shapes and colors.

[0038] Among them, Figure 3-6 As shown, since the pressure scales of different pressure gauges are different, in order to adapt to more pressure scales, the scale identification unit includes a calibration block 8 installed on the bracket body 5, and a marking body 9 is detachably installed on the calibration block 8. The characteristic point is set on the marking body 9. When different marking bodies 9 are replaced and installed on the calibration block 8, the calibration block 8 can replace different pressure values ​​to form pressure scales with different pressure values.

[0039] Therefore, one end of the calibration block 8 is set to be pointed so as to be more accurately aligned with the pressure scale line 27.

[0040] like Figure 3-6 As shown, the installation method of the sign body 9 is disclosed here. The sign body 9 can be magnetically attracted to the calibration block 8, or can be snapped onto the calibration block 8. In the present technical solution, a mounting groove 12 with an upper opening is provided on the calibration block 8, and the sign body 9 is installed inside the mounting groove 12 to complete the installation;

[0041] At the same time, in order to facilitate the removal of the marker 9, one end of the calibration block 8 is opened so that the marker 9 can slide in and out through the end opening of the calibration block 8. A groove 10 is provided on the upper side of the marker 9. When the user's finger presses into the groove 10, the friction between the finger and the groove 10 can be increased, making it easier for the user to remove the marker 9.

[0042] like Figure 5-7As shown, in order to reduce the phenomenon that the marker body 9 falls off from the calibration block 8, a receiving cavity 15 with a lower opening is provided inside the marker body 9, and a first return spring 16 and a positioning block 17 are installed in the receiving cavity 15 from top to bottom. The first return spring 16 can push the positioning block 17 out of the receiving cavity 15. The positioning block 17 is a combination structure of a cylinder and a semicircular body. The cylinder is slidably connected to the inside of the receiving cavity 15, and the upper side of the cylinder is against the lower end of the first return spring 16, and the semicircular body is fixedly connected to the lower end of the cylinder. On the side, a positioning hole 18 is opened on the inner wall of the lower side of the mounting groove 12, and the semicircular body of the positioning block 17 can enter the interior of the positioning hole 18 under the thrust of the first return spring 16. At this time, when the mark body 9 completely slides into the interior of the calibration block 8, the positioning block 17 and the positioning hole 18 are relative, and the positioning block 17 will enter the interior of the positioning hole 18 under the action of the first return spring 16 to complete the locking of the mark body 9. When the mark body 9 slides out, under the action of the horizontal thrust, the semicircular body can directly slide out from the interior of the positioning hole 18 to release the lock.

[0043] At the same time, sliding bars 14 are provided on both sides of the installation groove 12, and sliding grooves 13 are fixedly connected on both sides of the sign body 9. The two sliding grooves 13 are respectively slidably connected to the inside of the two sliding bars 14. The two sliding grooves 13 limit the sign body 9, which can prevent the sign body 9 from being pushed out from the upper part of the installation groove 12 by the first return spring 16.

[0044] like Figure 3-4 and Figure 8 As shown, in order to be suitable for more pressure gauges, the outer side of the bracket body 5 is equipped with multiple bracket seats 6 whose positions can be adjusted on the bracket body 5, and multiple calibration blocks 8 are respectively fixedly connected to the multiple bracket seats 6. The position of the calibration block 8 can be adjusted by adjusting the position of the bracket seat 6, so that the multiple calibration blocks 8 and the corresponding pointer body 26 are relative.

[0045] There are also many ways to adjust the position of the bracket seat 6 outside the bracket body 5;

[0046] One of them is that the outer side of the bracket body 5 is fixedly connected with multiple clamping stations, and the bracket seat 6 can be clamped on any clamping station;

[0047] The other is that a magnet is fixedly connected to the bracket seat 6, and the bracket seat 6 can be magnetically attracted to any position on the bracket body 5 by the magnet;

[0048] like Figure 3-4 and Figure 8-9As shown, in the present technical solution, an arc-shaped inner groove 11 is opened inside the bracket seat 6, the bracket body 5 is an annular sheet, the bracket seat 6 is slidably connected to the outside of the bracket body 5 through the arc-shaped inner groove 11, and a threaded hole penetrating the bracket seat 6 is opened on the bracket seat 6, and a positioning screw 19 is threadedly connected inside the threaded hole. When the bracket seat 6 completes sliding on the outside of the bracket body 5, the positioning screw 19 can be abutted against the bracket body 5 to lock the position of the bracket seat 6.

[0049] like Figure 3 and Figure 8-9 As shown, in order to more easily adjust the position of the bracket seat 6, an arc-shaped elastic spoke 7 is fixedly connected between two adjacent bracket seats 6. When two of the bracket seats 6 are positioned by the positioning screws 19, the bracket seat 6 located between the two positioned bracket seats 6 will automatically slide on the outside of the bracket body 5 under the elastic force of the arc-shaped elastic spoke 7 to adjust the position of the bracket seat 6.

[0050] like Figure 1-2 and Fig.10 As shown, the main bracket 1 includes an outer ring 20, the center of the outer ring 20 overlaps with the center of the bracket body 5, the first sub-bracket 2 and the second sub-bracket 4 are both fixedly connected to the outer ring 20, and the circumferential side of the outer ring 20 is equipped with multiple horizontal adjustment parts, and the multiple horizontal adjustment parts are all equipped with clips 22 located inside the outer ring 20. When the outer ring 20 is sleeved on the outside of the pressure gauge body 25, the position of the clip 22 is adjusted by the horizontal adjustment part so that the multiple clips 22 are all against the side wall of the pressure gauge body 25, so that the outer ring 20 can be fixed on the outside of the pressure gauge body 25.

[0051] The horizontal adjustment member may be a screw threadedly connected to the outer ring 20, and the screw and the clip 22 are rotatably connected. When the screw rotates, the position of the clip 22 can be adjusted, and the adjustment has good locking performance.

[0052] The horizontal adjustment parts can be two sliding rods 21 slidably connected to the outer ring 20. One end of the two sliding rods 21 is located inside the outer ring 20 and is fixedly connected to the clamp 22. The outside of the two sliding rods 21 and between the outer ring 20 and the clamp 22 are both sleeved with a second return spring 23. When the pressure gauge body 25 is clamped between the four clamps 22, under the action of the elastic force of the second return spring 23, the outer ring 20 will automatically overlap with the center of the pressure gauge body 25.

[0053] The ends of the two slide bars 21 located outside the outer ring 20 are fixedly connected with finger rings 24 . The finger rings 24 can facilitate the user to pull the slide bars 21 .

[0054] The working principle of the present invention is as follows: during installation, the pressure gauge body 25 is placed between the four clips 22, and the clips 22 are clamped on the outside of the pressure gauge body 25 under the elastic force of the second return spring 23, so that the outer ring 20 is assembled on the outside of the pressure gauge body 25, and the auxiliary mark group and the camera acquisition sub-machine 3 are located on the upper side of the pressure gauge body 25;

[0055] At this time, the auxiliary marking group can be debugged. During the debugging process, the two bracket seats 6 located at the edge are slid so that the two bracket seats 6 and the two pressure scale lines 27 located at the edge are opposite to each other, and the arc-shaped elastic spokes 7 can be used to automatically locate the positions of the remaining bracket seats 6, so that the bracket seats 6, the calibration block 8 and the corresponding pressure scale lines 27 are opposite to each other. At this time, the bracket seats 6 are positioned by the positioning screws 19. After the positioning is completed, the marking body 9 on the calibration block 8 is replaced, and the marking body 9 representing the corresponding pressure value is assembled on the calibration block 8;

[0056] When in use, the camera acquisition sub-machine 3 acquires images of the auxiliary mark group and the pressure gauge, and transmits the acquired images of the camera acquisition sub-machine 3 to the host, which identifies the position of the mark body 9 and the pressure value represented, and then compares the different pointers and images in the database to identify the pointer body 26;

[0057] After the pointer body 26 and the marking body 9 are identified, the relative positions of the pointer body 26 and the multiple scale identification units can be identified to identify the pressure value of the pressure gauge;

[0058] In summary, the present technical solution utilizes a mechanical structure scale identification unit with known features to replace the pressure scale line 27 with unknown features, thereby reducing the process of retrieving the pressure gauge scale line in the database and comparing the pressure scale line 27 with the image during the image recognition process, thereby reducing the image data processed when identifying the pressure gauge pressure value based on the image after the pressure gauge image is acquired.

[0059] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art unless otherwise specified and limited.

Claims

1. A real-time pressure gauge video acquisition device, comprising a main support (1), on which a video acquisition sub-machine (3) is mounted via a first sub-support (2), characterized in that: The main bracket (1) is fixedly connected to a bracket body (5) opposite to the video acquisition sub-machine (3) via a second auxiliary bracket (4); the bracket body (5) is an annular structure, and the center of the bracket body (5) overlaps the center of the pressure gauge body (25); the bracket body (5) is equipped with a plurality of scale identification units; and a plurality of different feature points are respectively arranged on the plurality of scale identification units; The scale marking unit comprises a calibration block (8) mounted on a bracket body (5); a marking body (9) is detachably mounted on the calibration block (8); and the characteristic point is arranged on the marking body (9); a mounting groove (12) is provided on the calibration block (8) and is opened on the upper side; and the marking body (9) is mounted inside the mounting groove (12); One end of the calibration block (8) is open; a receiving cavity (15) with a lower opening is provided inside the marking body (9); a first return spring (16) and a positioning block (17) are installed in sequence from top to bottom inside the receiving cavity (15); the first return spring (16) can push the positioning block (17) out of the receiving cavity (15); the positioning block (17) is a combination structure of a cylinder and a semicircular body; the cylinder is slidably connected inside the receiving cavity (15); the upper side of the cylinder and the lower end of the first return spring (16) are abutted against each other; the semicircular body is fixedly connected to the lower side of the cylinder; a positioning hole (18) is provided on the inner wall of the lower side of the mounting groove (12); the semicircular body of the positioning block (17) can enter the interior of the positioning hole (18) under the thrust of the first return spring (16); Slide bars (14) are provided on both sides of the installation groove (12), and slide bars (13) are fixedly connected to both sides of the sign body (9), and the two slide bars (13) are respectively slidably connected to the inside of the two slide bars (14); The outer side of the bracket body (5) is equipped with a plurality of bracket seats (6) whose positions are adjustable on the bracket body (5), and the plurality of calibration blocks (8) are respectively fixedly connected to the plurality of bracket seats (6); The support seat (6) is provided with an arc-shaped inner groove (11) inside, the support body (5) is an annular sheet, the support seat (6) is slidably connected to the outer side of the support body (5) through the arc-shaped inner groove (11), and the support seat (6) is provided with a threaded hole penetrating the support seat (6), a positioning screw (19) is threadedly connected inside the threaded hole, and the positioning screw (19) can be abutted against the support body (5); An arc-shaped elastic spoke (7) is fixedly connected between two adjacent bracket seats (6).

2. A real-time pressure gauge video acquisition device according to claim 1, characterized in that: The main support (1) includes an outer ring (20), the center of the outer ring (20) overlaps with the center of the support body (5), the first sub-support (2) and the second sub-support (4) are fixedly connected to the outer ring (20), and the circumferential side of the outer ring (20) is equipped with a plurality of horizontal adjustment parts, and the plurality of horizontal adjustment parts are equipped with clips (22) located inside the outer ring (20).

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