Water quality change early warning device for shrimp rice field

Abstract

The utility model provides a shrimp rice field water quality and water change early warning device, and relates to the field of aquaculture equipment, the shrimp rice field water quality and water change early warning device comprises a support frame and a fixing device arranged at the bottom of the support frame, and the fixing device is used for fixing the support frame on a ridge; a camera, an audible and visual alarm and a signal processing box are arranged at the top of the supporting frame; a signal processor and a power module are arranged in the signal processing box, the signal processor is electrically connected with the camera and the audible and visual alarm, and the power module is electrically connected with the signal processor, the camera and the audible and visual alarm. By means of the camera, the alarm, the signal processor and other devices, the water quality condition is judged by observing abnormal behaviors generated when the water quality of lobsters deteriorates through the camera, and workers can conveniently find the situation that the water quality becomes poor in time.

Description

Shrimp-rice paddy water quality exchange early warning device Technical Field

[0001] This application relates to the field of aquaculture equipment technology, and in particular to a water quality exchange early warning device for shrimp-rice fields. Background Technology

[0002] Rice-crayfish farming is an integrated ecological agricultural model where the growth of crayfish is closely related to the water quality of the rice paddies. When the water quality deteriorates, it can negatively impact the crayfish's growth environment, leading to a decline in both yield and quality. Currently, water quality management in rice-crayfish paddies relies on manual experience or regular monitoring of water parameters such as dissolved oxygen, ammonia nitrogen, and COD. However, this method is time-consuming, labor-intensive, and lacks timely response capabilities.

[0003] Studies have shown that crayfish exhibit abnormal behavior when the water quality in paddy fields deteriorates, especially at night when large numbers of them climb onto rice straw in search of better living conditions. Based on this behavioral characteristic, developing an automated water quality exchange early warning device has significant practical value.

[0004] The existing technology CN113688705A discloses an automatic pond patrol method and system for crayfish infrared image recognition. First, an infrared image acquisition device on a drone platform captures images of the crayfish pond and its banks. Then, an image processing unit processes the images to identify the number of crayfish on the banks. Finally, the data is remotely transmitted to an interactive platform via a communication device on the drone platform. While this method assesses water quality by observing crayfish on the banks, it requires intermittent drone shooting, resulting in high costs. Furthermore, the drone's takeoff and patrol require human control, leading to long intervals and hindering timely monitoring. In rice-crayfish farming, the rice stalks often obscure the crayfish, preventing drones from detecting whether they have climbed onto the stalks. Additionally, the muddy embankments in rice-crayfish farming environments make it difficult to permanently install monitoring equipment. Therefore, there is currently no suitable monitoring equipment for rice-crayfish farming. Summary of the Invention

[0005] To address the inconvenience of monitoring crayfish in shrimp-rice paddy farming, this application provides a water quality exchange early warning device for shrimp-rice paddy fields.

[0006] The shrimp-rice paddy water quality exchange early warning device provided in this application adopts the following technical solution:

[0007] A water quality exchange early warning device for shrimp-rice fields includes a support frame and a fixing device located at the bottom of the support frame. The fixing device is used to fix the support frame to the field ridge.

[0008] The top of the support frame is equipped with a camera, an audible and visual alarm, and a signal processing box.

[0009] The signal processing box contains a signal processor and a power module. The signal processor is electrically connected to the camera and the audible and visual alarm. The power module is electrically connected to the signal processor, the camera, and the audible and visual alarm.

[0010] Furthermore, the support frame includes a vertical support plate and a horizontal support plate, the horizontal support plate being connected to the top of the vertical support plate, the camera and signal processing box being located on the bottom surface of the horizontal support plate, and the audible and visual alarm being located on the top surface of the horizontal support plate.

[0011] Furthermore, the supporting cross plate is equipped with a waterproof housing, the camera is located inside the waterproof housing, and a light-transmitting glass window is opened on the side of the waterproof housing near the camera lens.

[0012] Furthermore, the supporting cross plate is equipped with a waterproof housing, and the camera is installed inside the waterproof housing through a pitch angle adjustment mechanism. A light-transmitting glass window is provided on the side of the waterproof housing near the camera lens.

[0013] Furthermore, the pitch angle adjustment mechanism includes a locking mechanism, a rotating shaft, a mounting base located at the bottom of the waterproof housing, and a hinge base located at the rear of the camera. The mounting base has a mounting groove, and the hinge base is rotatably mounted in the mounting groove via the rotating shaft. The locking mechanism is used to lock the rotation angle of the rotating shaft.

[0014] Furthermore, the hinge seat is fixedly connected to the rotating shaft. The first end of the rotating shaft is mounted on one side wall of the mounting groove through an axial limiting mechanism, and the second end extends freely out of the other side wall of the mounting groove to the outside of the waterproof housing. The second end of the rotating shaft is provided with an external thread.

[0015] The locking mechanism is a threaded sleeve that is threaded onto the rotating shaft. By screwing the threaded sleeve, the end of the threaded sleeve is pressed against the side wall of the mounting groove, thereby locking the relative positions of the hinge seat and the mounting seat.

[0016] Furthermore, the signal processing box has multiple heat dissipation holes on its side wall.

[0017] Furthermore, the heat dissipation holes are strip-shaped holes, and multiple heat dissipation holes are equally spaced along the height direction of the signal processing box. The signal processing box is provided with a rain shield above each heat dissipation hole, and the rain shield is inclined downward from the end closer to the signal processing box to the end farther away from the signal processing box.

[0018] Furthermore, the fixing device includes a fixing plate and several pins located at the bottom of the fixing plate, and the fixing plate is detachably connected to the supporting vertical plate.

[0019] Furthermore, the fixing plate is provided with multiple inserts on the side near the supporting vertical plate.

[0020] In summary, this application includes at least one of the following beneficial technical effects:

[0021] 1. This application involves installing cameras and audible and visual alarm devices on the paddy field ridges. The cameras observe the abnormal behavior of crayfish climbing onto rice straw due to water quality problems, thereby determining that the water quality has deteriorated. The audible and visual alarms respond to remind staff to deal with the water quality problem in a timely manner and reduce aquaculture losses. The camera observation method can continuously monitor the paddy field to monitor the abnormal behavior of crayfish caused by deteriorating water quality, thus facilitating staff to detect water quality deterioration in a timely manner.

[0022] 2. By installing a waterproof housing to protect the camera, the possibility of damage to the camera due to the damp environment of the rice field is reduced; by adjusting the camera angle through the tilt angle adjustment mechanism, the optimal shooting angle of the camera aimed at the rice straw is adjusted, which further facilitates the monitoring of abnormal behavior of crayfish.

[0023] 3. By setting up a fixing plate and inserting stakes, it can not only adapt to the fixed environment of the paddy field soil, but also fix the support frame at different positions on the paddy field ridge, so as to adjust the appropriate position of the camera on the side of the rice straw, making it convenient to monitor the behavior of crayfish climbing on the rice straw. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 is a schematic diagram of the overall structure of an embodiment of this application.

[0026] Figure 2 is a schematic diagram of the structure of the camera in an embodiment of this application.

[0027] Figure 3 is a structural schematic diagram of the fixing device according to an embodiment of this application.

[0028] Reference numerals: 1. Support frame; 11. Vertical support plate; 12. Horizontal support plate; 2. Fixing device; 21. Fixing plate; 22. Insert pin; 23. Fixing screw; 24. Locking nut; 25. Knocking head; 3. Audible and visual alarm; 4. Signal processing box; 41. Heat dissipation hole; 42. Water baffle; 5. Camera; 51. Hinge seat; 52. Mounting seat; 521. Mounting groove; 53. Rotating shaft; 54. Handle; 6. Waterproof housing; 61. Translucent glass window; 7. Locking mechanism; 71. Threaded sleeve; 8. Solar panel. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0030] This application discloses a water quality change early warning device for shrimp-rice paddy fields. Referring to Figure 1, the water quality change early warning device for shrimp-rice paddy fields includes a support frame 1, a fixing device 2 located at the bottom of the support frame 1, a camera 5, an audible and visual alarm 3, and a signal processing box 4 located at the top of the support frame 1.

[0031] The support frame 1 includes a vertical support plate 11 and a horizontal support plate 12. The vertical support plate 11 and the horizontal support plate 12 are perpendicular to each other and integrally formed to form an L-shaped bracket. The horizontal support plate 12 is located on top of the vertical support plate 11. The horizontal support plate 12 is fixed to the field ridge by a fixing device 2. The L-shaped design facilitates the installation of the camera 5, the sound and light alarm 3, and the signal processing box 4. The horizontal support plate 12 extends 0.5-1m directly above the rice straw area, allowing the camera 5 to capture a wide range of images of the rice straw.

[0032] The fixing device 2 is used to fix the support frame 1 to the field ridge.

[0033] Camera 5 is fixed to the bottom of the supporting cross plate 12, which can block rainwater to a certain extent. Camera 5 is an active infrared camera that emits infrared light with a wavelength of 850nm or 940nm. It uses the reflection imaging principle of the difference in infrared light reflectivity between the lobster shell and the rice straw to detect the abnormal behavior of lobsters climbing the straw at night.

[0034] The audible and visual alarm 3 includes a buzzer and a high-brightness LED flashlight (containing conspicuous colors such as red, blue, and yellow). The audible and visual alarm 3 is fixed to the top surface of the supporting horizontal plate 12, and a supporting column is provided between the alarm 3 and the supporting horizontal plate. The supporting column not only increases the height of the audible and visual alarm 3, facilitating the propagation of the alarm sound and light, but also facilitates the wiring of the audible and visual alarm 3, reducing the possibility of the wiring getting wet from rain. As an alternative embodiment, the audible and visual alarm 3 can also be replaced by a mobile client. Staff can use the app on the mobile client to receive alerts and respond promptly to changes in the water quality of the shrimp and rice paddies.

[0035] The signal processing box 4 is a stainless steel rectangular box, fixed to the bottom of the supporting horizontal plate 12 with bolts. Inside the signal processing box 4 are a signal processor and a power module. The signal processor includes a processing chip and a control circuit board. The processing chip can be a Hi3516DV300 embedded vision processing chip, and the control circuit board can be an STM32F407VGT6 microcontroller. The algorithm for the signal processor to identify lobsters can be found in Chinese patent application CN113688705A. The power module uses a high-safety, long-life 12V / 10Ah lithium iron phosphate battery, ensuring the system can still operate for three consecutive days of rainy weather, making it suitable for outdoor use.

[0036] The signal processing box 4 has multiple heat dissipation holes 41 to facilitate heat dissipation for the signal processor. The heat dissipation holes 41 are strip-shaped and are evenly spaced along the height of the signal processing box 4, significantly improving heat dissipation efficiency. Heat sinks can be installed near the heat dissipation holes 41 to further improve heat dissipation efficiency. To reduce the possibility of rainwater entering the signal processing box 4 through the heat sinks, a rain shield is installed above each heat dissipation hole 41. The rain shield is angled downwards from the end closest to the signal processing box 4 to the end furthest from the signal processing box 4, effectively blocking rainwater.

[0037] This application involves installing a camera 5 and an audible and visual alarm device on the paddy field ridges. The camera 5 observes the abnormal behavior of crayfish climbing onto rice straw due to water quality issues. By setting a threshold for crayfish density (which can be adjusted according to the actual size of the rice-crayfish field), when the camera, in conjunction with a signal processor, determines that the crayfish density has reached the threshold, it indicates that the water quality has deteriorated. The audible and visual alarm 3 then responds, allowing staff to address the water quality problem promptly and reduce aquaculture losses. The camera 5 observation method reduces monitoring costs and improves the real-time nature of monitoring, making it easier for staff to detect water quality problems in a timely manner.

[0038] To protect the camera 5 and reduce the possibility of damage due to rain or humid environments, a waterproof housing 6 is provided at the bottom of the supporting horizontal plate 12, as shown in Figure 1. The waterproof housing 6 is made of stainless steel or aluminum alloy, and a light-transmitting glass window 61 is provided on the side of the waterproof housing 6 away from the supporting vertical plate 11.

[0039] Referring to Figure 2, the tilt angle adjustment mechanism includes a locking mechanism 7, a rotating shaft 53, a mounting base 52 located at the bottom of the waterproof housing 6, and a hinge base 51 located at the tail of the camera 5. The hinge base 51 is fixedly connected to the tail of the camera 5 by screws. The mounting base 52 includes a disc and a support column located on the disc. The support column is coaxially welded and fixed to the disc. Multiple mounting holes are provided on the periphery of the disc. A mounting groove 521 is provided on the top of the mounting base 52 (i.e., the top of the mounting column). The hinge base 51 is rotatably mounted inside the mounting groove 521 via the rotating shaft 53. The locking mechanism 7 is used to lock the rotation angle of the rotating shaft 53.

[0040] Specifically, the rotating shaft 53 is a threaded rod, which is fixedly connected to the hinge seat 51 through a threaded engagement. The first end of the rotating shaft 53 is mounted on one side wall of the mounting groove 521 through an axial limiting mechanism. The axial limiting mechanism can be configured as limiting rings located on both sides of the side wall of the mounting groove 521, with the limiting rings threadedly connected to the rotating shaft 53. The two limiting rings limit the circumferential movement of the rotating shaft 53. The second end of the rotating shaft 53 extends freely through the other side wall of the mounting groove 521 and extends to the outside of the waterproof housing 6. A handle 54 is threadedly connected to the end of the second end of the rotating shaft 53. By rotating the handle 54, the angle of the rotating shaft 53 can be adjusted to control the shooting angle of the camera 5. As an alternative embodiment, the manual drive of the handle 54 can also be replaced by an electric drive such as a motor.

[0041] The locking mechanism 7 is a threaded sleeve 71 that is threadedly fitted onto the rotating shaft 53. One end of the threaded sleeve 71 is located inside the waterproof housing, and the other end protrudes from the waterproof housing for easy operation. The threaded sleeve 71 is threadedly connected to the rotating shaft 53. When the handle 54 is held and the threaded sleeve 71 is rotated, the threaded sleeve 71 can move circumferentially along the rotating shaft 53. Adjusting the threaded sleeve 71 to press against the side wall of the mounting groove 521 causes the two side walls of the mounting groove 521 to be deformed inward and pressed against the hinge seat 51, thereby locking the relative positions of the hinge seat 51 and the mounting seat 52, achieving the effect of fixing the angle of the camera 5.

[0042] Referring to Figure 1, a solar panel 8 is bolted to the top of the supporting horizontal plate 12. The solar panel 8 absorbs solar energy to charge the power module, which in turn supplies power to the signal processor, camera 5, and audible and visual alarm 3, enabling the warning device to maintain a fully charged state so that the warning device can maintain its functionality.

[0043] Referring to Figure 3, the fixing device 2 includes a fixing plate 21 and several pins 22 disposed at the bottom of the fixing plate 21. The fixing plate 21 is an L-shaped plate, that is, the fixing plate 21 includes a horizontal fixing plate and a vertical fixing plate. Several pins 22 are welded and fixed to the bottom of the horizontal fixing plate. Multiple fixing screws 23 are welded and fixed to the side wall of the vertical fixing plate. The supporting vertical plate 11 has mounting holes corresponding to the number and position of the fixing screws 23. The fixing screws 23 are passed through the mounting holes and locked to the supporting vertical plate 11 by locking nuts 24, so as to realize the detachable connection between the fixing plate 21 and the support frame 1.

[0044] When fixing the support frame 1, first insert the pin 22 at the bottom of the fixing plate 21 into the field ridge using tools such as a hammer to install the fixing plate 21 on the field ridge. Then connect the support frame 1 and the fixing plate 21 using fixing bolts and locking nuts 24 to install and fix the support frame 1 on the field ridge.

[0045] Because the fixing plate 21 is prone to deformation or damage after repeated hammering with tools such as hammers, a striking head 25 is provided at the center of the top surface of the fixing crossbar of the fixing plate 21. The striking head 25 is hemispherical. As an alternative embodiment, the striking head can also adopt other three-dimensional shapes to increase the thickness of the striking area and improve the structural strength. When the fixing plate 21 is installed on the field ridge, hammering the striking head 25 can reduce the direct damage to the fixing plate 21, thereby reducing the possibility of deformation or structural damage to the fixing plate 21.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A water quality exchange early warning device for shrimp-rice paddy fields, characterized in that, The device includes a support frame and a fixing device at the bottom of the support frame, which is used to fix the support frame to the field ridge. The top of the support frame is equipped with a camera, an audible and visual alarm, and a signal processing box. The signal processing box contains a signal processor and a power module. The signal processor is electrically connected to the camera and the audible and visual alarm, and the power module is electrically connected to the signal processor, the camera, and the audible and visual alarm. The support frame includes a vertical support plate and a horizontal support plate. The top of the horizontal support plate is connected to the top of the vertical support plate. The camera and the signal processing box are located on the bottom surface of the horizontal support plate, and the audible and visual alarm is located on the top surface of the horizontal support plate. The fixing device includes a fixing plate and several pins at the bottom of the fixing plate. The fixing plate is detachably connected to the vertical support plate.

2. The shrimp-rice paddy water quality exchange early warning device according to claim 1, characterized in that, The support plate is equipped with a waterproof housing, and the camera is installed inside the waterproof housing through a pitch angle adjustment mechanism. A light-transmitting glass window is opened on the side of the waterproof housing near the camera lens.

3. The shrimp-rice paddy water quality exchange early warning device according to claim 2, characterized in that, The pitch angle adjustment mechanism includes a locking mechanism, a rotating shaft, a mounting base located at the bottom of the waterproof housing, and a hinge base located at the rear of the camera. The mounting base has a mounting groove, and the hinge base is rotatably mounted in the mounting groove via the rotating shaft. The locking mechanism is used to lock the rotation angle of the rotating shaft.

4. The shrimp-rice paddy water quality exchange early warning device according to claim 3, characterized in that, The hinge seat is fixedly connected to the rotating shaft. The first end of the rotating shaft is installed on one side wall of the mounting groove through an axial limiting mechanism, and the second end extends freely out of the other side wall of the mounting groove to the outside of the waterproof shell. The second end of the rotating shaft is provided with an external thread. The locking mechanism is a threaded sleeve that is threadedly fitted onto the rotating shaft. By tightening the threaded sleeve, the end of the threaded sleeve is pressed against the side wall of the mounting groove, thereby locking the relative positions of the hinge seat and the mounting seat.

5. The shrimp-rice paddy water quality exchange early warning device according to claim 1, characterized in that, A solar panel is provided on the top of the supporting cross plate, and the solar panel is electrically connected to the power module.

6. The shrimp-rice paddy water quality exchange early warning device according to claim 1, characterized in that, The signal processing box has multiple heat dissipation holes on its side wall.

7. The shrimp-rice paddy water quality exchange early warning device according to claim 6, characterized in that, The heat dissipation holes are strip-shaped holes, and multiple heat dissipation holes are equally spaced along the height direction of the signal processing box. The signal processing box is provided with a rain shield above each heat dissipation hole. The rain shield is inclined downward from the end closer to the signal processing box to the end farther away from the signal processing box.

8. The shrimp-rice paddy water quality exchange early warning device according to claim 1, characterized in that, The fixing plate is equipped with a striking head for driving the stake into the field ridge.

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