Electrode assisted positioning device for rapid detection of small fish

Abstract

The utility model discloses a small fish rapid detection's electrode auxiliary positioning device belongs to food detection field. The device includes main body block and elastic buckle for carding and embedding in the detector handle, and the main body block is equipped with negative pressure device, and through the flow channel board connection porous adsorption platform, with the negative pressure adsorption fixed small fish, prevents its removal. The design improves electrode contact stability, avoids the detection sliding, ensures fish freshness detection accurate high efficiency, and easily installs operation.

Description

Technical Field

[0001] This utility model relates to the field of food testing, specifically to an electrode-assisted positioning device for rapid detection of small fish. Background Technology

[0002] In the quality control of aquatic products, rapid detection of fish freshness is crucial. Electrical impedance tomography (EIT), a common non-destructive testing technique, is widely used due to its ease of operation and rapid response. Typical instruments (such as fish quality analyzers) apply a weak, multi-frequency alternating current by directly contacting the surface of the fish flesh with their electrodes, and measure the resulting change in electrical impedance. This value is closely related to the biochemical state of the fish tissue, thus enabling an indirect and effective assessment of fish freshness.

[0003] However, this detection method has encountered significant technical challenges in practical operation, especially when performing rapid detection on small fish such as sardines, yellow croakers, and anchovies. Due to the small size, limited surface area, and generally smooth surface of small fish, it becomes extremely difficult for operators (especially inexperienced beginners) to accurately and stably press and hold the electrode in the target position while holding the detector. The electrode is prone to slipping or shifting on the smooth surface of the fish. This unstable contact leads to inconsistent contact resistance between the electrode and the fish tissue, or even causes the electrode to leave the effective contact area, resulting in inaccurate or unreliable impedance measurements, severely affecting the accuracy and repeatability of the detection.

[0004] To address the challenge of securing small fish, current technologies lack efficient, convenient, and highly integrated solutions specifically designed for detection. Conventional methods often rely on the operator's manual skills, which are not only time-consuming and labor-intensive but also produce inconsistent results. While designing complex external clamps may solve the fixation problem, it introduces new issues such as cumbersome installation, reduced detection efficiency, inconvenience in carrying, and increased process complexity due to separation from the detection instrument. Therefore, there is an urgent need for an auxiliary positioning device that can be directly integrated into existing detection instruments, is quick to install and remove, is easy and efficient to operate, and can firmly adhere and secure small fish during detection to ensure stable contact between the electrode and the fish's surface, ultimately improving the accuracy and overall efficiency of rapid detection of small fish. Utility Model Content

[0005] The purpose of this invention is to provide an auxiliary positioning device that can ensure stable contact between small fish and electrodes during impedance testing through adsorption fixation and quick assembly / disassembly design, thereby improving the accuracy of the test.

[0006] An electrode-assisted positioning device for rapid detection of small fish includes a main block with deformable elastic clips on its sides for attaching to a handle. A flow channel plate is fixedly mounted on the bottom of the main block, and an adsorption platform is fixedly mounted at the bottom of the flow channel plate. A negative pressure device is fixedly mounted inside the main block. Fish detectors are commonly used to detect the freshness of fish. The instrument applies a weak multi-frequency alternating current to the fish flesh through direct contact with the fish surface via electrodes, and measures the electrical impedance value of the fish tissue when the current passes through it to determine freshness. However, when testing small fish, due to their smooth surface and small size, the electrodes of the detector often slide on the fish surface during testing, leading to inaccurate electrode measurements, especially for inexperienced operators. Therefore, an electrode-assisted positioning device is proposed. The negative pressure device provides negative pressure to the adsorption platform through the flow channel plate, quickly adsorbing and fixing small fish to prevent movement and ensuring stable contact of the detection electrodes. The deformable elastic clips make the device easy to install on the detector and simplify operation. This device can solve the problem of small fish easily sliding or shifting during rapid detection, providing an integrated positioning mechanism to improve detection efficiency and accuracy; at the same time, it simplifies the mechanical connection between the device and the detector, reducing operation time.

[0007] This electrode-assisted positioning device for rapid detection of small fish utilizes a miniature negative pressure pump as its negative pressure mechanism. The switch for this pump is located on the top of the main body. The miniature negative pressure pump is small and lightweight, generating a stable and controllable negative pressure to ensure consistent and reliable adsorption force on the adsorption platform, minimizing the risk of malfunction. It is suitable for portable detection environments. During operation, the operator holds the handle of the detector, and the switch for the miniature negative pressure pump is conveniently located on the top of the main body, conforming to the operator's habits. The operator then manually controls the switch of the miniature negative pressure pump after holding the handle.

[0008] This electrode-assisted positioning device for rapid detection of small fish features a flow channel plate with a bent plate structure, primarily composed of a vertically connected connecting plate and a platform plate. The platform plate extends to one side along the bottom end of the connecting plate, and at least four adsorption platforms are fixedly mounted on its bottom surface. The bent design optimizes the spatial layout, allowing the connecting plate to handle negative pressure conduction and the platform plate to support multiple adsorption platforms, thus improving the distribution efficiency of adsorption points. The bend in the flow channel plate precisely conforms to the detection stage at the bottom of the instrument for stability, and the adsorption platforms at the bottom of the platform plate can directly adhere to the fish surface, ensuring that the electrodes do not slip during instrument testing.

[0009] An electrode-assisted positioning device for rapid detection of small fish has a connecting plate with a main channel along its length and first branch channels equal in number to the adsorption platforms. One end of each first branch channel connects to the main channel. The platform plates have second and third branch channels equal in number to the adsorption platforms, with the second and third branch channels interconnected. The main channel and branch channels form a hierarchical negative pressure network, ensuring uniform negative pressure distribution to each adsorption platform. The interconnected second and third branch channels reduce pressure loss, improve adsorption stability, prevent uneven negative pressure distribution during conduction that could lead to adsorption point failure, and optimize channel efficiency. This addresses the problem of weak or unstable adsorption force, ensuring secure fixation of the fish. The processing opening of the second branch channel on the platform plate is sealed with a sealing cap.

[0010] An electrode-assisted positioning device for rapid detection of small fish connects the other end of each first branch channel to the corresponding second branch channel. This allows negative pressure to be directly transmitted from the main channel through the first branch channel to the second branch channel, reducing pressure leakage or blockage and improving negative pressure transmission efficiency; it ensures consistent adsorption force at each adsorption point, enhances the integration of the channel system, and solves the problem of large pressure differences between multiple adsorption points; it supports rapid response and ensures more accurate fish positioning.

[0011] An electrode-assisted positioning device for rapid detection of small fish, with the outlet of each third branch channel connected to the corresponding adsorption platform.

[0012] This electrode-assisted positioning device for rapid detection of small fish features pressure sensors at both ends of the main channel. These sensors detect the negative pressure generated by a miniature negative pressure pump within the channel. The pressure sensors monitor the negative pressure in real time, providing feedback signals to allow operators to adjust the pump or trigger an alarm. This ensures the adsorption pressure remains within a safe range, preventing damage to fish from excessive pressure or adsorption failure from insufficient pressure. An intelligent monitoring mechanism addresses the inaccuracies of manual pressure monitoring, improving system reliability and automation, and preventing equipment malfunctions. The pressure sensor data is directly displayed on the detector's screen via Bluetooth, providing feedback signals. The miniature negative pressure pump automatically disconnects to protect the operator in case of abnormal pressure readings.

[0013] This electrode-assisted positioning device for rapid detection of small fish features a flexible buckle with a rounded notch in the center. The inner surface of the notch is designed to perfectly fit the handle. This rounded notch provides a secure fit, ensuring the buckle tightly encloses the detector handle, reducing device wobbling and improving the overall integrity of the device and detector for more stable operation. It also solves the problem of loose connections caused by gaps between the buckle and the handle, optimizing ergonomics for easy one-handed operation. Furthermore, skilled operators can easily remove the entire device from the detector without affecting its independent use.

[0014] This electrode-assisted positioning device for rapid detection of small fish features a spring-loaded latch with an opening at its end furthest from the main body. The latch is configured to deform under external force, increasing the opening width 'a' to engage with the handle. This flexible design allows the latch to easily engage and disengage from the handle without tools; the increased opening width accommodates handles of different sizes, improving versatility. It simplifies the installation and disassembly process, addressing the time-consuming nature of traditional fixing methods (such as bolts); and enhances user experience and device flexibility.

[0015] An electrode-assisted positioning device for rapid detection of small fish features at least one circular channel running through each adsorption platform. The adsorption platforms are made of porous sintered material, such as stainless steel, which is easy to clean and disinfect, and has good biocompatibility. When negative pressure is applied, air is drawn out through the pores in the porous material, creating numerous tiny negative pressure points at the contact point between the platform surface and the fish. These points work together to generate a unified yet dispersed and gentle adsorption force, causing the positioning device to adhere to the fish surface and ensuring the electrode remains stable and does not shift during measurement.

[0016] The advantages of this invention are as follows: By integrating a negative pressure adsorption platform, a graded flow channel system, and an elastic buckle structure, it provides an auxiliary device that is easy to operate and has precise positioning, effectively solving the problem of unstable electrode contact caused by slippage on the surface of small fish; the porous adsorption platform combined with intelligent negative pressure control ensures that the fish are securely fixed; the integrated buckle design and top switch layout enable quick assembly and disassembly of the detector and one-handed operation; real-time monitoring by the pressure sensor ensures adsorption safety. While improving the accuracy, efficiency, and operational safety of impedance detection, it significantly reduces the dependence on personnel proficiency and is suitable for standardized operations in portable detection scenarios. Attached Figure Description

[0017] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall device of this utility model.

[0019] Figure 2 This is a schematic diagram of the caliper of this utility model in the testing instrument.

[0020] Figure 3 This is a schematic diagram of the flow channel plate of this utility model.

[0021] Figure 4 This is a cross-sectional view of the main body block and connecting plate of this utility model.

[0022] Figure 5 This is a schematic diagram of the elastic buckle of this utility model.

[0023] Figure 6 This is a schematic diagram of the adsorption platform.

[0024] Figure descriptions: 1-Main body block, 2-Elastic buckle, 3-Flow channel plate, 4-Adsorption platform, 5-Pressure sensor, 6-Detector, 11-Miniature negative pressure pump, 11a-Switch, 21-Arc notch, 22-Opening, 31-Connecting plate, 32-Platform plate, 33-Encapsulation cover, 34-Third branch flow channel, 35-Main flow channel, 36-First branch flow channel, 37-Second branch flow channel, 41-Circular channel, 61-Electrode, 62-Handle, 63-Display screen. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] The concepts involved in this application will first be described with reference to the accompanying drawings. It should be noted that the following descriptions of various concepts are only for the purpose of making the content of this application easier to understand and do not constitute a limitation on the scope of protection of this application; furthermore, the embodiments and features in the embodiments of this application can be combined with each other unless otherwise specified. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] Example 1:

[0028] See attached document Figure 1 Appendix Figure 2 Appendix Figure 5 As shown, the operator first installs the entire device onto the fish detector 6 using the elastic buckle 2. Specifically, an external force is applied to the elastic buckle 2 to deform it, thereby increasing the width of its end opening 22 and locking it onto the handle 62 of the detector 6. At this time, the arc-shaped notch 21 on the inner side of the buckle 2 tightly fits the shape of the handle 62, ensuring a stable connection. Subsequently, the small fish to be detected is placed under the adsorption platform 4 at the bottom of the device and below the electrodes 61 of the detector 6.

[0029] See attached document Figure 1 Appendix Figure 3 Appendix Figure 4 Appendix Figure 6As shown, when starting the device, the operator turns on the micro negative pressure pump 11 by pressing the micro negative pressure pump switch 11a located on the top of the main body block 1. The negative pressure generated by the micro negative pressure pump 11 is transmitted and distributed through the flow channel system set inside the flow channel plate 3. The specific path is as follows: the negative pressure first enters the main flow channel 35 opened along the length direction in the connecting plate 31, and then flows through the main flow channel 35 to each first branch flow channel 36; then, the negative pressure is transmitted from each first branch flow channel 36 to the second branch flow channel 37 on the corresponding platform plate 32 and the third branch flow channel 34 that is connected to it; finally, the negative pressure reaches each adsorption platform 4 through the outlet of the third branch flow channel 34, and acts on the surface of the fish through the circular channels 41 that are set through the interior of each adsorption platform 4. The adsorption platform 4, made of stainless steel porous material, thus generates a uniform and reliable adsorption force, firmly adsorbing and fixing small fish.

[0030] See attached document Figure 2 Appendix Figure 4 As shown, during negative pressure operation, pressure sensors 5 installed at both ends of the main flow channel 35 continuously monitor the negative pressure value within the channel. This detection data can be transmitted in real-time via Bluetooth and displayed on the display screen 63 of the detector 6. If the sensor 5 detects an abnormal negative pressure value (such as exceeding a preset safety range), the system can automatically shut down the miniature negative pressure pump 11 for protection, preventing fish damage or adsorption failure. At this time, the operator can safely operate the detector 6, ensuring its electrodes 61 stably contact the fixed fish surface for impedance testing. The device's stable adsorption effectively prevents the electrodes 61 from slipping on the smooth fish surface, ensuring measurement accuracy.

[0031] After the test is completed, turn off switch 11a to release the negative pressure and remove the fish. If the device needs to be disassembled, simply pull the elastic buckle 2 again to deform and enlarge its opening 22, and it can be easily removed from the handle 62 of the detector 6. The adsorption platform 4 in the device is detachable and easy to clean and disinfect for subsequent reuse.

[0032] It should be noted that the terminology used in this application is for the purpose of describing specific embodiments only and is not intended to limit the scope of this application. As shown in this specification, unless the context clearly indicates otherwise, words such as "a," "an," "an," and / or "the" do not specifically refer to the singular and may include the plural. The terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes said element.

[0033] It should also be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," "linked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0034] The embodiments and / or implementation methods described above are merely preferred embodiments and / or implementation methods for implementing the present utility model, and are not intended to limit the implementation methods of the present utility model in any way. Any person skilled in the art can make some modifications or alterations to other equivalent embodiments without departing from the scope of the technical means disclosed in the present utility model, but these should still be regarded as the same technology or embodiment as the present utility model.

[0035] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. An electrode-assisted positioning device for rapid detection of small fish, characterized in that: Includes a main block (1), on the side of the main block (1) are provided a deformable elastic buckle (2) for being snapped into the handle (62), a flow channel plate (3) is fixedly provided at the bottom of the main block (1), an adsorption platform (4) is fixedly provided at the bottom end of the flow channel plate (3), and a negative pressure device is fixedly provided inside the main block (1).

2. The electrode-assisted positioning device for rapid detection of small fish according to claim 1, characterized in that: The negative pressure device is a micro negative pressure pump (11), and a switch (11a) for the micro negative pressure pump (11) is provided on the top of the main block (1).

3. The electrode-assisted positioning device for rapid detection of small fish according to claim 2, characterized in that: The flow channel plate (3) is a bent plate structure, mainly composed of a vertically connected connecting plate (31) and a platform plate (32). The platform plate (32) extends to one side along the bottom end of the connecting plate (31), and at least four adsorption platforms (4) are fixedly provided on the bottom surface of the platform plate (32).

4. The electrode-assisted positioning device for rapid detection of small fish according to claim 3, characterized in that: The connecting plate (31) has a main channel (35) along its length and has the same number of first branch channels (36) as the adsorption platform (4). One end of each first branch channel (36) is connected to the main channel (35). The platform plate (32) has the same number of second branch channels (37) and third branch channels (34) as the adsorption platform (4). The second branch channel (37) and the corresponding third branch channel (34) are connected.

5. The electrode-assisted positioning device for rapid detection of small fish according to claim 4, characterized in that: The other end of each of the first branch channels (36) is connected to the corresponding second branch channel (37).

6. The electrode-assisted positioning device for rapid detection of small fish according to claim 4, characterized in that: The outlet of each of the third branch channels (34) is connected to the corresponding adsorption platform (4).

7. The electrode-assisted positioning device for rapid detection of small fish according to claim 4, characterized in that: Pressure sensors (5) are encapsulated at both ends of the main channel (35). The pressure sensors (5) are used to detect the negative pressure value generated by the micro negative pressure pump (11) in the main channel (35).

8. The electrode-assisted positioning device for rapid detection of small fish according to claim 1, characterized in that: The elastic buckle (2) has an arc notch (21) in the middle, and the inner surface of the arc notch (21) is configured to completely fit the shape of the handle (62).

9. The electrode-assisted positioning device for rapid detection of small fish according to claim 1, characterized in that: The elastic buckle (2) has an opening (22) at one end away from the main body block (1). The elastic buckle (2) is configured to deform based on external force to increase the width a of the opening (22) so as to be snapped into the handle (62).

10. The electrode-assisted positioning device for rapid detection of small fish according to claim 1, characterized in that: Each of the adsorption platforms (4) has at least one circular channel (41) running through its interior.

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