Water meter image acquisition camera device and use method

Abstract

The invention relates to the technical field of water meter image acquisition and metering, in particular to a water meter image acquisition camera device and a using method.The water meter image acquisition camera device comprises a water meter body, a water meter dial is fixedly installed on the upper surface of the water meter body, and an image acquisition assembly is arranged above the water meter body; the beneficial effects are that a lens adjusting cylinder and a fixed cylinder in the image acquisition assembly are respectively provided with a convex mirror 1 and a convex mirror 2, image light can be focused, a movable concave mirror is adjusted to move between the convex mirror 1 and the convex mirror 2, and combined light supplement is carried out through a light supplement ring and a light condensation plate, so that the image acquisition device can carry out image acquisition on the surface of a water meter dial plate twice; local and overall images can be acquired, and feedback after later transmission is more convenient for calibrating the image acquisition quality, so that the water meter reading recognition is more accurate; the problem that in the prior art, an image collection element is arranged on the inner side of a meter cover of a mechanical water meter to conduct image collection, only local images are collected possibly, and consequently subsequent recognition is incomplete is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of water meter image acquisition and measurement, and in particular relates to a water meter image acquisition camera device and a use method thereof. Background Art

[0002] A water meter is an instrument used to continuously measure, record, and display the volume of water flowing through a measuring sensor under measurement conditions. Mechanical water meters are widely used to measure tap water consumption. Mechanical water meters do not have an electrical signal output. Traditional measurement and detection methods and trade settlement rely entirely on manual reading, which is inefficient. As labor costs rise, production costs also increase, and products often lack price competitiveness. Replacing all mechanical water meters would cost even more. However, relying on manual reading is prone to errors. Existing technologies capture images of the mechanical water meter dial and identify and convert them to obtain meter readings. However, environmental influences such as dim lighting can result in low image quality, leading to low reading accuracy.

[0003] An existing Chinese patent document with publication number CN219997591U proposes a mechanical water meter reading device based on machine vision. The device captures water meter images by placing an image acquisition element on the inside of the meter cover and brightness adjustment components on both sides of the image acquisition element. However, placing the image acquisition element on the inside of the water meter cover is very close to the water meter dial. At this time, image acquisition may only capture a partial image, resulting in incomplete subsequent recognition.

[0004] Therefore, the present invention proposes a water meter image acquisition camera device and a method of use, which solves the problem in the prior art that only a partial image may be captured by setting an image acquisition element on the inner side of the cover of a mechanical water meter for image acquisition, resulting in incomplete subsequent recognition. The image acquisition and fill light are integrated into one, and the size of the light transmission area is adjusted using a lens, so that the image of the water meter dial can be completely captured. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a water meter image acquisition camera device and a method of use to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a water meter image acquisition camera device, comprising a water meter body, a water meter dial being fixedly mounted on the upper surface of the water meter body, an image acquisition component being arranged above the water meter body, a temperature stabilization component being arranged on one side of the image acquisition component, the image acquisition component comprising an installation shell 1, an image collector, a lens adjustment tube, a fill aperture and a fixing tube, and the temperature stabilization component comprising a installation shell 2, an air duct adjustment plate and an adjustment control structure.

[0007] Preferably, the lower side wall of the mounting shell one is fixed to the upper side wall of the water meter body by bolts, an image collector is fixedly installed on the top of the inner surface of the mounting shell one, the mounting shell two is fixedly installed on one side of the mounting shell one, a total air inlet duct is provided above the side wall where the mounting shell one and the mounting shell two are connected, a lower cold air duct and an upper hot air duct are provided below the side wall where the mounting shell one and the mounting shell two are connected, and the lower cold air duct is arranged below the upper hot air duct.

[0008] Preferably, a lens adjustment tube is fixedly installed in the middle of the inner surface of the mounting shell 1, the lens adjustment tube is arranged below the main air inlet duct, a convex mirror 1 is fixedly installed above the inner surface of the lens adjustment tube, and a telescopic adjustment rod is symmetrically fixedly installed on the upper surface of the lens adjustment tube.

[0009] Preferably, a movable concave mirror is slidably mounted on the inner surface of the lens adjustment tube, and an adjustment frame is fixedly mounted below the output end of the telescopic adjustment rod. The inner end of the adjustment frame passes through the side wall of the lens adjustment tube and is fixedly connected to the outer surface of the movable concave mirror. The side wall of the lens adjustment tube is provided with a sliding groove adapted to the adjustment frame.

[0010] Preferably, a fill aperture is fixedly installed below the outer surface of the lens adjustment tube, a ring light source is provided on the lower surface of the fill aperture, focusing plates are evenly distributed on the outside of the fill aperture, the upper end of the focusing plate is movably connected to the side wall of the fill aperture, LED lamp beads are evenly distributed on the lower surface of the fill aperture, an extrusion pad is fixedly installed on the upper surface of the fill aperture, and an extrusion limit strip is fixedly installed on the bottom of the upper surface of the fill aperture.

[0011] Preferably, a water meter disk clamping sealing ring that matches the size of the water meter disk is fixedly installed on the inner surface of the bottom of the mounting shell one, the water meter disk clamping sealing ring is sleeved on the outer side of the water meter disk, a heating tube is fixedly installed on the upper surface of the water meter disk clamping sealing ring, and a fixing cylinder is fixedly installed on the inner side of the upper surface of the water meter disk clamping sealing ring.

[0012] Preferably, a limiting groove adapted to the focusing plate is provided above the side wall of the fixed cylinder, a through groove adapted to the position of the heating tube is provided below the side wall of the fixed cylinder, a convex mirror 2 is fixedly installed on the inner surface of the fixed cylinder, and the upper inner surface of the fixed cylinder is fixedly connected to the side surface of the extrusion pad.

[0013] Preferably, a corrugated movable cover is slidably installed on the outer side of the fixed cylinder, the upper surface of the corrugated movable cover is fixedly connected to the lower surface of the adjusting frame through a fixed column, and the lower surface of the adjusting frame is also fixedly installed with an extrusion arc strip that is adapted to the position of the extrusion limit strip. A through groove 2 is fixedly installed above the side wall of the corrugated movable cover, and the bottom of the corrugated movable cover is fixedly connected to the inner surface of the mounting shell 1.

[0014] Preferably, an upper air inlet filter is provided on the upper inner wall of the installation shell 2, a lower air inlet filter is provided on the bottom inner wall of the installation shell 2, an air duct adjustment plate is slidably installed inside the installation shell 2, a through slot three is provided on the side wall of the air duct adjustment plate, an adjustment control structure is provided above the middle partition of the installation shell 2, a fan is fixedly installed inside the installation shell 2, the position of the lower cold air duct is adapted to the position of the heating pipe, and the position of the upper hot air duct is adapted to the position of the through slot two.

[0015] The present invention also provides a method for using a water meter image acquisition camera device, comprising the following steps: Step 1, performing partial image acquisition, the telescopic adjustment rod is operated, and the movable concave mirror is pushed by the telescopic adjustment rod to a position close to the convex mirror 2. At this time, the image collector operates to focus on and capture a partial image of the water meter dial, such as the reading area of the water meter dial; Step 2: Capture the entire image. The telescopic adjustment rod retracts, driving the movable concave mirror to move back to the convex mirror 1. At this time, the image collector can capture the entire image of the water meter dial. Step three: After two acquisitions, the data undergoes necessary signal processing and formatting, and is then sent to the receiving end through an appropriate interface and transmission medium. Finally, it is stored or displayed. After calculation and recognition by a computer program, the accurate reading of the water meter dial is obtained.

[0016] Compared with the prior art, the present invention has the following beneficial effects: By designing an image acquisition component and a temperature stabilization component on the water meter body, the lens adjustment tube and the fixed tube inside the image acquisition component are respectively installed with convex mirror 1 and convex mirror 2, which can focus the image light. By adjusting the movable concave mirror to move between the two, and through the fill light circle and the focusing plate to perform joint fill light, the image acquirer can perform two image acquisitions on the surface of the water meter dial. Both local and overall images can be acquired. The feedback after later transmission is more convenient for calibrating the image acquisition quality, making the water meter reading recognition more accurate, and solving the problem in the existing technology that only local images are acquired and subsequent recognition is incomplete when the image acquisition element is set on the inner cover of the mechanical water meter for image acquisition. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall bottom-up structure of the present invention; Figure 3 This is a schematic cross-sectional view of the second mounting housing of the present invention in a heat dissipation state; Figure 4 This is a structural schematic diagram of the second mounting housing of the present invention in a heated state; Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure at point A; Figure 6 Schematic diagram of the cross-sectional structure of the installation housing 1 and the installation housing 2 of the present invention; Figure 7 This is a schematic diagram of the overall structure of a cross-section of the mounting housing of the present invention; Figure 8 Schematic diagram of the internal cross-sectional structure of the corrugated movable cover of the present invention; Figure 9 This is a schematic diagram of the cross-section structure of the corrugated movable cover of the present invention; Figure 10 For the present invention Figure 9 The enlarged structural diagram at point B of FIG. Figure 11 Schematic diagram of the structure of the fill aperture of the present invention when viewed from above and below; Figure 12 This is a structural schematic diagram of the corrugated movable cover of the present invention in an extruded state; Figure 13 This is a schematic cross-sectional view of the corrugated movable cover of the present invention in an extruded state; Figure 14 For the present invention Figure 13 The enlarged structural diagram at C of FIG. Figure 15 This is a schematic diagram of the adjustment state comparison structure of the present invention; Figure 16 The figure is a flow chart of the method for using the present invention.

[0018] In the figure: 1. Water meter body; 11. Water meter dial; 2. Image acquisition component; 21. Mounting shell 1; 22. Image acquisition device; 23. Lens adjustment tube; 231. Convex mirror 1; 232. Telescopic adjustment rod; 233. Adjustment frame; 2331. Extrusion arc strip; 234. Movable concave mirror; 24. Filling aperture; 241. Focusing plate; 2411. Extrusion pad; 2412. Extrusion limit strip; 242. Ring light source; 25. Fixing tube; 251. Through slot one; 252, limit slot; 253, convex mirror two; 26, corrugated movable cover; 261, through slot two; 27, water meter plate clamping seal ring; 271, heating tube; 3, temperature stabilizing component; 31, installation shell two; 311, upper air inlet filter; 312, lower air inlet filter; 32, air duct adjustment plate; 321, through slot three; 33, adjustment control structure; 34, fan; 35, main air inlet duct; 36, lower cold air duct; 37, upper hot air duct. DETAILED DESCRIPTION

[0019] In order to clearly and completely describe the objectives and technical solutions of the present invention and make its advantages more clearly understood, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Example 1 See also Figures 1 to 15 The present invention provides a technical solution: a water meter image acquisition camera device, comprising a water meter body 1, a water meter dial 11 fixedly mounted on the upper surface of the water meter body 1, an image acquisition component 2 arranged above the water meter body 1, a temperature stabilization component 3 arranged on one side of the image acquisition component 2, the image acquisition component 2 comprising a mounting shell 1 21, an image collector 22, a lens adjustment tube 23, a fill aperture 24 and a fixing tube 25, the temperature stabilization component 3 comprising a mounting shell 2 31, an air duct adjustment plate 32 and an adjustment control structure 33, The lower side wall of the mounting housing 21 is fixed to the upper side wall of the water meter body 1 by bolts. The image collector 22 is fixedly installed on the top of the inner surface of the mounting housing 1 21. The mounting housing 2 31 is fixedly installed on one side of the mounting housing 1 21. A total air inlet duct 35 is opened above the side wall where the mounting housing 1 21 and the mounting housing 2 31 are connected. A lower cold air duct 36 and an upper hot air duct 37 are opened below the side wall where the mounting housing 1 21 and the mounting housing 2 31 are connected. The lower cold air duct 36 is arranged below the upper hot air duct 37. In this embodiment, the installation shell 1 21 is mainly used to install the image collector 22. By being fixed to the outer side of the water meter body 1, it is also used as a water meter cover. A temperature sensor can also be set on one side of the image collector 22. It needs to be stated that the image collector 22 is mainly responsible for water meter image acquisition. Its model can be IMX219 or other suitable model products, and the transmission process after image acquisition involves multiple modules, starting from obtaining the original image data, undergoing necessary signal processing and formatting, and then sending it to the receiving end through an appropriate interface and transmission medium, and finally storing or displaying it. This process is a mature technology and will not be repeated in this embodiment. The installation shell 2 31 mainly plays the role of installing the fan 34, and a power module is provided at the bottom of the installation shell 2 31, and a signal control transmission module is installed above the power module.

[0021] Example 2 See also Figures 1 to 15 On the basis of the first embodiment, the present embodiment further proposes that a lens adjustment tube 23 is fixedly mounted on the middle part of the inner surface of the mounting shell 21, the lens adjustment tube 23 is arranged below the main air inlet duct 35, a convex mirror 231 is fixedly mounted above the inner surface of the lens adjustment tube 23, a telescopic adjustment rod 232 is symmetrically fixedly mounted on the upper surface of the lens adjustment tube 23, a movable concave mirror 234 is slidably mounted on the inner surface of the lens adjustment tube 23, an adjustment frame 233 is fixedly mounted below the output end of the telescopic adjustment rod 232, the inner side end of the adjustment frame 233 passes through the side wall of the lens adjustment tube 23 and is fixedly connected to the outer side surface of the movable concave mirror 234, and the side wall of the lens adjustment tube 23 is provided with a A water meter disc clamping seal 27 that matches the size of the water meter disc 11 is fixedly installed on the inner surface of the bottom of the chute and the mounting housing 1 21. The water meter disc clamping seal 27 is sleeved on the outer side of the water meter disc 11. A heating tube 271 is fixedly installed on the upper surface of the water meter disc clamping seal 27. A fixing cylinder 25 is fixedly installed on the inner side of the upper surface of the water meter disc clamping seal 27. A limiting groove 252 that matches the focusing plate 241 is provided on the upper side wall of the fixing cylinder 25. A through groove 1 251 that matches the position of the heating tube 271 is provided on the lower side wall of the fixing cylinder 25. A convex mirror 2 253 is fixedly installed on the inner surface of the fixing cylinder 25. The upper inner surface of the fixing cylinder 25 is fixedly connected to the side surface of the extrusion pad 2411. In this embodiment, the lens adjustment tube 23 mainly serves to install the convex mirror 1 231 and the movable concave mirror 234, and the fixed tube 25 mainly serves to install the convex mirror 253. The convex mirror 253 and the convex mirror 1 231 both have the function of focusing light. The telescopic adjustment rod 232 drives the adjustment frame 233 to drive the movable concave mirror 234 to move between the convex mirror 1 231 and the convex mirror 2 253, so that the image light path of the water meter dial 11 can be adjusted. The specific adjustment process is as follows: first, the movable concave mirror 234 is pushed by the telescopic adjustment rod 232 to move close to the convex mirror 2 253. At this time, the image collector 22 mainly focuses on collecting a local image of the water meter dial 11, such as the reading area of the water meter dial 11, and then the telescopic adjustment rod 232 drives the movable concave mirror 234 to move back to the position close to the convex mirror 1 253. 31. At this time, the image collector 22 can collect the overall image of the water meter dial 11, which is convenient for collecting other information on the water meter dial 11. Each time the acquisition is carried out, the movable concave mirror 234 needs to be moved once for adjustment and two images are collected. Both local and overall images can be collected. The feedback after the later transmission is more convenient for calibrating the image acquisition quality, so that the water meter reading recognition is more accurate; the water meter dial clamping sealing ring 27 mainly plays the role of increasing the sealing performance of the mounting shell 21 and the water meter dial 11, and by installing the heating tube 271 on the outside of the fixed cylinder 25, the through groove 251 can facilitate the heat of the heating tube 271 to be dissipated to the inside of the fixed cylinder 25. In this way, once there is water vapor on the water meter dial 11 and the image acquisition is not clear, the heating tube 271 can be used for drying.

[0022] Example 3 See also Figures 1 to 15 Based on the second embodiment, this embodiment further proposes that a fill aperture 24 is fixedly mounted below the outer surface of the lens adjustment tube 23, a ring light source 242 is provided on the lower surface of the fill aperture 24, light-gathering plates 241 are evenly distributed on the outer side of the fill aperture 24, the upper ends of the light-gathering plates 241 are movably connected to the side walls of the fill aperture 24, LED lamp beads are evenly distributed on the lower surface of the fill aperture 24, a compression pad 2411 is fixedly mounted on the upper surface of the fill aperture 24, and an extrusion limit strip 2412 is fixedly mounted on the bottom of the upper surface of the fill aperture 24; In this embodiment, the inner side of the fill light ring 24 is a bevel, and the annular light source 242 distributed on it mainly plays the role of illuminating the top of the water meter dial 11, illuminating the surface of the water meter dial 11 so that the image collector 22 can collect a clear image. In addition, the lamp beads under the focusing plate 241 have the function of fill light. The focusing plate 241 is fixed to the top of the fixing tube 25 by the squeezing pad 2411. The squeezing pad 2411 pushes the focusing plate 241 to tilt, so that the light emitted by the lamp beads is evenly distributed on the upper and outer sides of the water meter dial 11. , so that when the image collector 22 performs overall image acquisition, the global illumination is more uniform, and the overall image is complete and clear. When the telescopic adjustment rod 232 pushes the adjustment frame 233 and the movable concave mirror 234 downward for local acquisition, the extrusion limit bar 2412 is squeezed by the extrusion arc bar 2331, so that the extrusion pad 2411 is squeezed to the middle and concentrated. At this time, the light of the lamp bead is also focused on one side by the convex mirror 253, so that the light is more concentrated to the middle of the water meter dial 11, so that the image collector 22 collects the local image more clearly. It should be noted that the attached Figure 3 It can be seen that a power module and a signal control transmission module installed above the power module are provided on the lower side of the installation shell 2 31. The power module can be connected to the power supply through a line to supply power to the entire device. The signal control transmission module can be connected to the computer remote control system through Bluetooth or other wireless communication technologies to convert and transmit signals. The annular light source 242, LED lamp beads, and telescopic adjustment rod 232 are all controlled by the signal control transmission module. When water meter image acquisition is required, the computer remote control system outputs a signal, and the signal control transmission module receives the signal to light up the annular light source 242 and the LED lamp beads and start the telescopic adjustment rod 232. The above can be achieved by the existing technology and will not be repeated in this embodiment.

[0023] Example 4 See also Figures 1 to 15On the basis of the third embodiment, this embodiment further proposes that a corrugated movable cover 26 is slidably installed on the outer side of the fixed cylinder 25, and the upper surface of the corrugated movable cover 26 is fixedly connected to the lower surface of the adjustment frame 233 through a fixed column. The lower surface of the adjustment frame 233 is also fixedly installed with an extrusion arc strip 2331 that is adapted to the position of the extrusion limit strip 2412. A through groove 261 is fixedly installed above the side wall of the corrugated movable cover 26. The bottom of the corrugated movable cover 26 is fixedly connected to the inner surface of the mounting shell 1 21. The upper surface of the mounting shell 2 31 An upper air inlet filter 311 is provided on the inner wall, a lower air inlet filter 312 is provided on the bottom inner wall of the second mounting shell 31, an air duct adjustment plate 32 is slidably installed inside the second mounting shell 31, a third through slot 321 is provided on the side wall of the air duct adjustment plate 32, an adjustment control structure 33 is provided above the middle partition of the second mounting shell 31, a fan 34 is fixedly installed inside the second mounting shell 31, the position of the lower cold air duct 36 is adapted to the position of the heating pipe 271, and the position of the upper hot air duct 37 is adapted to the position of the second through slot 261; In this embodiment, the corrugated movable cover 26 mainly plays the role of gathering the upper part of the heating tube 271. When it is hot in summer, because the installation shell 1 21 encloses the image collector 22, once the working temperature is high, the air duct adjustment plate 32, in cooperation with the adjustment control structure 33, seals the lower part of the installation shell 2 31. Figure 3 and attached Figure 4, it can be seen that the adjustment control structure 33 is mainly composed of a limiting slide fixedly installed above the middle partition of the installation shell 31, a motor installed under the slide, and a gear installed in the middle of the slide. The outer surface of the gear is meshed with the rack on the side surface of the air duct adjustment plate 32, so that the motor drives the gear to rotate clockwise and counterclockwise to realize the up and down movement of the air duct adjustment plate 32. Similarly, the motor and fan 34 of the adjustment control structure 33 are controlled by the signal control transmission module. When the fan 34 works, the air enters the interior of the installation shell 31 through the upper air inlet filter 311 and directly cools the image collector 22 through the main air inlet duct 35. When the temperature is low in winter, the air duct adjustment plate 32 is lifted with the cooperation of the adjustment control structure 33 to close the lower air inlet filter 312. At this time, the fan 34 works due to the upper air inlet filter 311. The wind filter 311 is closed, and the fan 34 can only suck the air from the bottom through the slot three 321 and then blow it to the image collector 22 through the main air inlet duct 35. At this time, the air flow from the bottom will be accelerated to flow upward, and the external air will enter the interior below the installation shell 2 31 through the lower air inlet filter 312. Since the lower cold air duct 36 and the upper hot air duct 37 at the bottom of the installation shell 2 31 are closed by a thin partition, the air can only enter the top of the heating tube 271 through the lower cold air duct 36 and be heated. Then, it passes through the slot two 261, the upper hot air duct 37, and the slot three 321 in turn and is blown by the fan 34 through the main air inlet duct 35 to the area above the installation shell 1 21, so that the working environment temperature of the image collector 22 can ensure the normal startup of the image collector 22 and perform the function of image acquisition.

[0024] Example 5 See also Figure 16 Based on the fourth embodiment, this embodiment further proposes a method for using a water meter image acquisition camera device, comprising the following steps: Step 1: perform local image acquisition. The telescopic adjustment rod 232 works, and the movable concave mirror 234 is pushed by the telescopic adjustment rod 232 to move to a position close to the convex mirror 253. At this time, the image collector 22 works to focus on and collect a local image of the water meter dial 11. It should be noted that the height adjusted by the movable concave mirror 234 is the limit height of the lens adjustment tube 23. The height is consistent each time it is adjusted, and the limit height needs to be debugged at the beginning of installation to ensure that each subsequent adjustment of the movable concave mirror 234 can enable the image collector 22 to correctly focus on and collect the local and overall images of the water meter dial 11. In addition, the attached Figure 15It can be seen that when the movable concave mirror 234 moves to a position close to the second convex mirror 253, the light rays gathered by the second convex mirror 253 are refracted by the outer area of the movable concave mirror 234 and then further dispersed. Then, the light rays gathered by the first convex mirror 231 can only be reflected in the central area of the water meter dial 11 and focused and collected by the image collector 22. However, when the movable concave mirror 234 moves to a position close to the first convex mirror 231, the light rays gathered by the second convex mirror 253 are refracted by the middle area of the movable concave mirror 234 and then focused by the first convex mirror 231. Thus, the entire light image on the water meter dial 11 can be reflected and focused and collected by the image collector 22. Step 2: Capture the entire image. The telescopic adjustment rod 232 retracts, driving the movable concave mirror 234 to move back to the position close to the convex mirror 231. At this time, the image collector 22 can capture the entire image of the water meter dial 11. Step 3: After two acquisitions, the necessary signal processing and formatting are carried out, and then the signal is sent to the receiving end through the appropriate interface and transmission medium, and finally stored or displayed. After calculation and recognition by the computer program, the accurate reading of the water meter dial 11 is obtained.

[0025] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A water meter image acquisition camera device, comprising a water meter body (1), wherein a water meter dial (11) is fixedly mounted on the upper surface of the water meter body (1), characterized in that: An image acquisition component (2) is provided above the water meter body (1), and a temperature stabilization component (3) is provided on one side of the image acquisition component (2). The image acquisition component (2) comprises a first mounting housing (21), an image collector (22), a lens adjustment cylinder (23), an aperture ring (24), and a fixing cylinder (25). The temperature stabilization component (3) comprises a second mounting housing (31), an air duct adjustment plate (32), and an adjustment control structure (33).

2. The water meter image acquisition camera device according to claim 1, characterized in that: The lower side wall of the mounting shell (21) is fixed to the upper side wall of the water meter body (1) by bolts, and the top of the inner surface of the mounting shell (21) is fixedly installed with an image collector (22). The mounting shell (31) is fixedly installed on one side of the mounting shell (21). A total air inlet duct (35) is provided above the side wall where the mounting shell (21) and the mounting shell (31) are connected. A lower cold air duct (36) and an upper hot air duct (37) are provided below the side wall where the mounting shell (21) and the mounting shell (31) are connected. The lower cold air duct (36) is provided below the upper hot air duct (37).

3. The water meter image acquisition camera device according to claim 2, characterized in that: A lens adjustment tube (23) is fixedly mounted on the middle of the inner surface of the mounting shell (21), and the lens adjustment tube (23) is arranged below the main air inlet duct (35). A convex mirror (231) is fixedly mounted above the inner surface of the lens adjustment tube (23), and a telescopic adjustment rod (232) is symmetrically fixedly mounted on the upper surface of the lens adjustment tube (23).

4. The water meter image acquisition camera device according to claim 3, characterized in that: A movable concave mirror (234) is slidably mounted on the inner surface of the lens adjustment tube (23); an adjustment frame (233) is fixedly mounted below the output end of the telescopic adjustment rod (232); an inner end of the adjustment frame (233) passes through the side wall of the lens adjustment tube (23) and is fixedly connected to the outer surface of the movable concave mirror (234); and a sliding groove adapted to the adjustment frame (233) is provided on the side wall of the lens adjustment tube (23).

5. The water meter image acquisition camera device according to claim 4, characterized in that: A fill light ring (24) is fixedly mounted below the outer surface of the lens adjustment tube (23); a ring light source (242) is provided on the lower surface of the fill light ring (24); light collecting plates (241) are evenly distributed on the outer side of the fill light ring (24); the upper end of the light collecting plate (241) is movably connected to the side wall of the fill light ring (24); LED lamp beads are evenly distributed on the lower surface of the fill light ring (24); an extrusion pad (2411) is fixedly mounted on the upper surface of the fill light ring (24); and an extrusion limit strip (2412) is fixedly mounted on the bottom of the upper surface of the fill light ring (24).

6. The water meter image acquisition camera device according to claim 1, characterized in that: A water meter disc clamping sealing ring (27) having a size adapted to the water meter disc (11) is fixedly mounted on the inner surface of the bottom of the mounting housing (21); the water meter disc clamping sealing ring (27) is sleeved on the outer side of the water meter disc (11); a heating tube (271) is fixedly mounted on the upper surface of the water meter disc clamping sealing ring (27); and a fixing cylinder (25) is fixedly mounted on the inner side of the upper surface of the water meter disc clamping sealing ring (27).

7. The water meter image acquisition camera device according to claim 6, characterized in that: A limiting groove (252) adapted to the focusing plate (241) is provided on the upper side wall of the fixed cylinder (25), a through groove (251) adapted to the position of the heating tube (271) is provided on the lower side wall of the fixed cylinder (25), a convex mirror (253) is fixedly mounted on the inner surface of the fixed cylinder (25), and the upper inner surface of the fixed cylinder (25) is fixedly connected to the side surface of the extrusion pad (2411).

8. The water meter image acquisition camera device according to claim 7, characterized in that: A corrugated movable cover (26) is slidably mounted on the outer side of the fixed cylinder (25). The upper surface of the corrugated movable cover (26) is fixedly connected to the lower surface of the adjustment frame (233) via a fixed column. The lower surface of the adjustment frame (233) is also fixedly mounted with an extrusion arc strip (2331) that is adapted to the position of the extrusion limit strip (2412). A second through groove (261) is fixedly mounted above the side wall of the corrugated movable cover (26). The bottom of the corrugated movable cover (26) is fixedly connected to the inner surface of the mounting shell (21).

9. The water meter image acquisition camera device according to claim 2, characterized in that: An upper air inlet filter (311) is provided on the upper inner wall of the second mounting shell (31), a lower air inlet filter (312) is provided on the bottom inner wall of the second mounting shell (31), an air duct adjustment plate (32) is slidably installed inside the second mounting shell (31), a through slot three (321) is provided on the side wall of the air duct adjustment plate (32), an adjustment control structure (33) is provided above the middle partition of the second mounting shell (31), a fan (34) is fixedly installed inside the second mounting shell (31), the position of the lower cold air duct (36) is adapted to the position of the heating pipe (271), and the position of the upper hot air duct (37) is adapted to the position of the through slot two (261).

10. A method for using a water meter image acquisition camera device, implemented by the water meter image acquisition camera device according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: step 1, performing local image acquisition, the telescopic adjustment rod (232) operates, the movable concave mirror (234) is pushed by the telescopic adjustment rod (232) to move to a position close to the second convex mirror (253), and the image collector (22) operates at this time, focusing on and acquiring a local image of the water meter dial (11), such as a reading area of the water meter dial (11); Step 2: performing overall image acquisition, the telescopic adjustment rod (232) is retracted, driving the movable concave mirror (234) to move and reset close to the convex mirror (231), at which time the image collector (22) can acquire the overall image of the water meter dial (11); Step 3: After two acquisitions, the necessary signal processing and formatting are carried out, and then the signal is sent to the receiving end through the appropriate interface and transmission medium, and finally stored or displayed. After calculation and recognition by the computer program, the accurate reading of the water meter dial (11) is obtained.

Images