Detachable temperature compensation structure of fish detector

Abstract

The utility model belongs to fish detection technical field provides detachable temperature compensation structure of fish detector. The utility model discloses temperature compensation structure and fish detector, temperature compensation structure includes cylinder and temperature measuring element, and fish detector includes shell and the measuring electrode of shell bottom, and the inside of cylinder is equipped with fixed part, and fixed part is fixed measuring electrode and temperature measuring element in parallel, and is equipped with temperature measuring cavity below fixed part, and the side of cylinder is equipped with the temperature measuring cavity intercommunication filling port, and is equipped with filling solution in temperature measuring cavity, and temperature measuring cavity surrounds measuring electrode, and filling solution is contacted with measuring electrode, and the top of cylinder is equipped with the shell bottom of buckle connection fish detector. Through above setting, the problem that fish detector integrated structure maintenance is difficult is solved by buckle connection, shortens the response time of heat conduction, keeps electrode surface temperature stable, avoids the heat conduction efficiency drop caused by filling solution temperature drop and medium ageing after long -term use.

Description

Technical Field

[0001] This utility model relates to the field of fish detection technology and provides a detachable temperature compensation structure for a fish detector. Background Technology

[0002] Driven by consumption upgrades and healthy eating trends, the seafood market continues to expand, but the industry still faces challenges such as difficulties in freshness identification and an imperfect quality traceability system. In response, relevant institutions and departments have introduced instruments similar to the Japanese YAMATO fish quality measuring instrument / fish fat / freshness analyzer, primarily used for detecting fish freshness and measuring fish fat content, widely used in the aquatic, food, and testing industries. By integrating spectral analysis and artificial intelligence technology, it achieves rapid contact detection, accurately analyzing key indicators such as fish freshness, freeze-thaw records, and nutritional components. Currently, most fish detectors require physical contact with the fish for measurement. However, frozen fish inevitably thaw and warm up during testing, and changes in the fish's surface temperature significantly affect the accuracy and stability of the detector's data. Existing technology US7182847B1 provides a system for monitoring the pH value of a sample medium. This system includes a pH probe with a pH-sensitive electrode, a reference electrode, and a temperature electrode arranged within its housing. The probe housing typically includes a flexible inner tube and a flexible outer tube, with the inner tube concentrically arranged within the outer tube. Preferably, the probe housing is sized to minimize trauma when inserting the pH probe into physiological tissue, muscle, or bodily fluids. The system also includes a processing device coupled to the pH probe to determine the pH value of the sample medium. The inventors believe there is significant room for improvement in the prior art. Summary of the Invention

[0003] The purpose of this invention is to provide temperature compensation for the measuring electrodes of a fish detector, thus offering a stable temperature measurement environment for chilled fish. Secondly, the use of a cylindrical body and snap-fit ​​structure enables quick assembly and disassembly of the temperature compensation structure with the fish detector, solving the problem of difficult maintenance associated with integrated structures. The design of the temperature measuring cavity surrounding the measuring electrodes allows the filling solution to directly contact the electrode surface, shortening the heat conduction response time and maintaining a stable electrode surface temperature.

[0004] The fish detector has a detachable temperature compensation structure, which includes a temperature compensation structure and a fish detector. The temperature compensation structure includes a cylinder and a temperature measuring element. The fish detector includes a housing and a measuring electrode at the bottom of the housing. A fixing component is provided inside the cylinder, which fixes the measuring electrode and the temperature measuring element in parallel. A temperature measuring chamber is provided below the fixing component. A filling port is provided on the side of the cylinder to connect to the temperature measuring chamber. The temperature measuring chamber is filled with a filling solution, which surrounds the measuring electrode. The filling solution is in contact with the measuring electrode. The top of the cylinder is provided with a snap-fit ​​connection to the bottom of the fish detector housing. Through the above-described configuration, the snap-fit ​​connection enables rapid assembly and disassembly of the temperature compensation structure and the fish detector, solving the problem of difficult maintenance of the integrated structure of the fish detector. Preferably, the filling solution primarily cools the surface of the measuring electrode, keeping the measuring electrode temperature close to that of the fish's body surface. This prevents the fish's body surface temperature from rapidly rising due to the impedance measurement current passing through and leaving the refrigerated or chilled environment, thus avoiding rapid changes in the measuring electrode surface temperature. With this structure, the filling solution is in direct contact with the measuring electrode, shortening the heat conduction response time and maintaining a stable electrode surface temperature. The filling port facilitates the replacement of the filling solution and control of its temperature, preventing a decrease in heat conduction efficiency due to temperature drop and medium aging after long-term use. The measuring electrode at the bottom of the fish detector's housing is used for impedance detection. It is placed on the surface of the fish to be tested, and a small AC measuring current or voltage is introduced into the fish's interior to detect the corresponding changes in impedance.

[0005] Preferably, the temperature compensation structure includes a docking structure, which comprises an elastomer and a conductive plate. The docking structure is located on top of the fixing component. One end of the elastomer is connected to the fixing component, and the other end of the elastomer is provided with a conductive plate. The fish detector includes a connecting contact point. When the snap-fit ​​is connected to the bottom of the fish detector's housing, the housing compresses the elastomer through the conductive plate. The conductive plate connects the temperature measuring element and the connecting contact point. The elastomer is preferably a non-conductive thermoplastic polyester spring. The elastomer cooperates with the conductive plate to achieve conductivity and adaptive pressure contact between the temperature measuring element and the detector's connecting contact point, maintaining a contact pressure of 50-100 gF and a stable contact resistance of ≤50 mΩ, thus solving the problem of poor electrical contact.

[0006] Preferably, the top of the fixing member is provided with a first retaining ring, the top of the first retaining ring mates with the top of the temperature measuring element, and the elastic body is located inside the first retaining ring. The inner arc of the protrusion of the first retaining ring and the elastic body fix the temperature measuring element, forming a multi-point clamping to prevent the temperature measuring element from displacing due to vibration or impact.

[0007] Preferably, the side of the retaining ring is provided with an arc-shaped protrusion, and the temperature measuring element is closely attached to the inner arc of the protrusion. The elastic body and the protrusion clamp and restrict the movement of the temperature measuring element.

[0008] Preferably, the bottom of the fixing component is provided with a second retaining ring, and a sealing ring is provided inside the second retaining ring. The second retaining ring compresses the sealing ring to form a seal, which can withstand the erosion of the filling liquid during the detection process and the erosion of the fish's body surface moisture and mucus during the withdrawal of the measuring electrode; the compression of the sealing ring is controlled at 20% to 30% to ensure that the sealing performance can still be maintained after long-term use and to avoid leakage of the filling solution.

[0009] Preferably, the fastener is provided with a first filling channel, one end of which is connected to the filling port on the side of the cylinder, and the other end of the first filling channel is connected to the bottom of the fastener.

[0010] Preferably, an isolation element is installed close to the bottom of the fixing element, and the isolation element and the fixing element press and fix the sealing ring. The temperature measuring chamber is composed of the bottom of the isolation element, the temperature measuring electrode and the cylinder.

[0011] Preferably, the isolation element is provided with a second filling channel in a vertical direction. One end of the second filling channel is connected to the first filling channel, and the other end of the second filling channel is connected to the temperature measuring cavity at the bottom of the isolation element.

[0012] With the above configuration, the filling tube in the second filling channel can be further designed as a tapered channel, with the larger end of the tapered tube closer to the first filling channel and the smaller end closer to the temperature measuring cavity. The filling tubes of the first and second filling channels form a stepped flow guide, improving the injection speed of the filling solution and preventing air bubbles from being drawn in, which could affect the measurement process and lifespan of the measuring electrode. The insulating component is made of polyolefin material with a thermal conductivity of less than 0.2 W / (m·K), which blocks the influence of external ambient temperature fluctuations on the temperature measuring cavity, effectively maintaining the temperature of the filling solution and providing a stable temperature environment for the measuring electrode.

[0013] Preferably, a filling tube is provided within the first and second filling channels. One end of the filling tube is connected to the filling port, and the other end is located inside the temperature measuring chamber. The portion of the filling tube inside the temperature measuring chamber is annular, surrounding the measuring electrode with a gap between it and the electrode. The annular portion of the filling tube has a liquid outlet. The annular filling tube surrounding the measuring electrode and at least two circumferentially evenly distributed liquid outlets enable synchronous filling of the filling solution, improving the temperature uniformity inside the temperature measuring chamber. Simultaneously, it prevents the filling solution from directly scouring the measuring electrode, avoiding mechanical wear caused by direct scouring and extending the lifespan of the measuring electrode.

[0014] Preferably, the isolator also includes a temperature sensing channel, which allows the temperature measuring element to extend from the fixture into the temperature sensing chamber, with the end of the temperature measuring element contacting the filling tube. The temperature sensing channel guides the end of the temperature measuring element into direct contact with the filling tube, reducing thermal resistance and ensuring the temperature measuring element, typically an NTC thermistor, can quickly sense temperature changes in the filling solution.

[0015] This invention achieves temperature compensation during fish detection through mechanical positioning, optimized heat conduction, sealing protection, and stable electrical connection design. It effectively eliminates the interference of fish surface temperature changes on impedance detection data, making it particularly suitable for precise detection in dynamic thawing scenarios of chilled fish. It also offers the following advantages: the cylindrical body and snap-fit ​​structure enable quick assembly and disassembly of the temperature compensation structure and the fish detector, solving the maintenance difficulties of integrated structures; the temperature measuring chamber is designed to surround the measuring electrodes, with at least two circumferentially evenly distributed liquid outlets for simultaneous filling of the filling solution, improving the temperature uniformity inside the measuring chamber while preventing the filling solution from directly scouring the measuring electrodes, thus avoiding mechanical wear and extending the lifespan of the measuring electrodes. Attached Figure Description

[0016] 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.

[0017] Figure 1 This is a schematic diagram of the detachable temperature compensation structure of a fish detector. Figure 2 This is a structural diagram of the fasteners and the docking structure; Figure 3 This is a structural schematic diagram of the fastener; Figure 4 A cross-sectional view of the detachable temperature compensation structure of the fish detector; Figure 5 A cross-sectional view of the fish detector with this invention installed.

[0018] Legend: 1. Cylinder; 11. Buckle; 12. Filling port; 2. Conductor plate; 3. Fixing component; 31. First retaining ring; 32. Protrusion; 33. First filling channel; 34. Second filling channel; 35. Temperature measuring channel; 4. Elastomer; 5. Isolator; 6. Filling tube; 61. Liquid outlet; 7. Fish detector; 71. Measuring electrode; 8. Temperature measuring element. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Example 1 like Figure 1 and Figure 5As shown, the detachable temperature compensation structure of the fish detector 7 includes a temperature compensation structure and the fish detector 7. The temperature compensation structure includes a cylinder 1 and a temperature measuring element 8. The fish detector 7 includes a housing and a measuring electrode 71 at the bottom of the housing. A fixing member 3 is provided inside the cylinder 1, which fixes the measuring electrode 71 and the temperature measuring element 8 side by side. A temperature measuring chamber is provided below the fixing member 3. A filling port 12 is provided on the side of the cylinder 1 to connect to the temperature measuring chamber. The temperature measuring chamber contains a filling solution, which surrounds the measuring electrode 71. The filling solution is in contact with the measuring electrode 71. A buckle 11 is provided on the top of the cylinder 1 to connect to the bottom of the housing of the fish detector 7. Through the above settings, the buckle 11 connection enables quick assembly and disassembly of the temperature compensation structure and the fish detector 7, solving the problem of difficult maintenance of the integrated structure of the fish detector 7. The filling solution is in direct contact with the measuring electrode 71 under the above structure, shortening the response time of heat conduction and maintaining a stable electrode surface temperature. The filling port 12 facilitates the replacement of the filling solution and the control of the filling solution temperature, avoiding the decrease in heat conduction efficiency caused by the temperature drop of the filling solution and the aging of the medium after long-term use.

[0021] like Figure 1 and Figure 2 As shown, the temperature compensation structure includes a docking structure, which comprises an elastomer 4 and a conductive plate 2. The docking structure is located on top of the fixing member 3. One end of the elastomer 4 is connected to the fixing member 3, and the other end of the elastomer 4 is provided with the conductive plate 2. The fish detector 7 includes a connecting contact point. When the buckle 11 is connected to the bottom of the housing of the fish detector 7, the housing compresses the elastomer 4 through the conductive plate 2. The conductive plate 2 connects the temperature measuring element 8 and the connecting contact point. The elastomer 4 is preferably a non-conductive thermoplastic polyester spring. The elastomer 4 cooperates with the conductive plate 2 to achieve conductivity and adaptive pressure contact between the temperature measuring element 8 and the connecting contact point of the detector, maintaining a contact pressure of 50-100gF and a stable contact resistance of ≤50mΩ, thus solving the problem of poor electrical contact.

[0022] like Figure 3 and Figure 4 As shown, the top of the fixing member 3 is provided with a first retaining ring 31, the top of the first retaining ring 31 is engaged with the top of the temperature measuring element 8, and the elastic body 4 is located inside the first retaining ring 31. The inner side of the arc of the protrusion 32 of the first retaining ring 31 and the elastic body 4 fix the temperature measuring element 8, forming a multi-point clamping to prevent the temperature measuring element 8 from being displaced due to vibration or impact.

[0023] like Figure 3 As shown, the side of the retaining ring is provided with an arc-shaped protrusion 32, and the temperature measuring element 8 is closely attached to the inner arc of the protrusion 32. The elastic body 4 and the protrusion 32 clamp and restrict the movement of the temperature measuring element 8.

[0024] like Figure 4As shown, the bottom of the fixing component 3 is provided with a second retaining ring, and a sealing ring is provided inside the second retaining ring. The second retaining ring compresses the sealing ring to form a seal, which can withstand the erosion of the filling liquid during the detection process and the erosion of the fish's body surface moisture and mucus during the withdrawal of the measuring electrode 71; the compression of the sealing ring is controlled at 20% to 30% to ensure that the sealing performance can still be maintained after long-term use and to avoid leakage of the filling solution.

[0025] like Figure 4 As shown, the fixing member 3 is provided with a first filling channel 33. One end of the filling channel is connected to the filling port 12 on the side of the cylinder 1, and the other end of the first filling channel 33 is connected to the bottom of the fixing member 3.

[0026] The bottom of the fixing component 3 is tightly fitted with the isolation component 5. The isolation component 5 and the fixing component 3 are pressed together to fix the sealing ring. The temperature measuring chamber is composed of the bottom of the isolation component 5, the temperature measuring electrode and the cylinder 1.

[0027] The isolation member 5 is vertically provided with a second filling channel 34. One end of the second filling channel 34 is connected to the first filling channel 33, and the other end of the second filling channel 34 is connected to the temperature measuring cavity at the bottom of the isolation member 5.

[0028] With the above configuration, the filling tube 6 within the second filling channel 34 can be further designed as a tapered channel, with the larger end of the tapered tube closer to the first filling channel 33 and the smaller end closer to the temperature measuring cavity. The filling tubes 6 of the first filling channel 33 and the second filling channel 34 form a stepped flow guide, improving the injection speed of the filling solution and preventing air bubbles from being drawn in, which would affect the measurement process and lifespan of the measuring electrode 71. The insulating component 5 is made of polyolefin material with a thermal conductivity of less than 0.2 W / (m·K), which blocks the influence of external ambient temperature fluctuations on the temperature measuring cavity, effectively maintaining the temperature of the filling solution and providing a stable temperature environment for the measuring electrode 71.

[0029] like Figure 4 As shown, a filling tube 6 is provided in the first filling channel 33 and the second filling channel 34. One end of the filling tube 6 is connected to the filling port 12, and the other end of the filling tube 6 is located inside the temperature measuring chamber. The portion of the filling tube 6 inside the temperature measuring chamber is annular. The annular portion of the filling tube 6 surrounds the measuring electrode 71 and has a gap with the measuring electrode 71. The annular portion of the filling tube 6 is provided with a liquid outlet 61. The annular filling tube 6 surrounds the measuring electrode 71, and the eight circumferentially evenly distributed liquid outlets 61 realize the synchronous filling of the filling solution, improve the temperature uniformity inside the temperature measuring chamber, and at the same time avoid the filling solution directly washing over the measuring electrode 71, avoiding mechanical wear of the measuring electrode 71 caused by direct washing, and extending the service life of the measuring electrode 71.

[0030] The isolator 5 is also provided with a temperature measuring channel 35, which allows the temperature measuring element 8 to extend from the fixing element 3 into the temperature measuring chamber, with the end of the temperature measuring element 8 contacting the filling tube 6. The temperature measuring channel 35 guides the end of the temperature measuring element 8 to directly contact the filling tube 6, reducing thermal resistance and ensuring that the temperature measuring element 8, which generally uses an NTC thermistor element, can quickly sense the temperature change of the filling solution.

[0031] Example 2 The difference from Embodiment 1 is that, in this embodiment, an annular positioning step is provided at the center of the bottom of the temperature measuring chamber to cooperate with the measuring electrode. This achieves axial positioning of the measuring electrode, avoiding uneven electric field distribution caused by electrode tilting; the step surface forms a labyrinth seal, further preventing external moisture intrusion; and it reduces radial friction during electrode insertion and removal, extending the electrode's service life.

[0032] This invention achieves temperature compensation during fish detection through mechanical positioning, optimized heat conduction, sealing protection, and stable electrical connection design. It effectively eliminates the interference of fish surface temperature changes on impedance detection data, making it particularly suitable for precise detection in dynamic thawing scenarios of chilled fish. It also offers the following advantages: the cylinder 1 and snap-fit ​​11 structure enable quick assembly and disassembly of the temperature compensation structure and the fish detector 7, solving the problem of difficult maintenance of integrated structures; the temperature measuring cavity is designed to surround the measuring electrode 71, and at least two circumferentially evenly distributed liquid outlets 61 allow for synchronous filling of the filling solution, improving the uniformity of temperature inside the temperature measuring cavity while preventing the filling solution from directly scouring the measuring electrode 71, thus avoiding mechanical wear and extending the service life of the measuring electrode 71.

[0033] The above embodiments and / or implementation methods 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 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 embodiments as the present utility model.

Claims

1. A detachable temperature compensation structure for a fish detector, comprising a temperature compensation structure and a fish detector (7), wherein the temperature compensation structure comprises a cylinder (1) and a temperature measuring element (8), and the fish detector (7) comprises a housing and a measuring electrode (71) at the bottom of the housing, characterized in that, The cylinder (1) is provided with a fixing member (3) inside, which fixes the measuring electrode (71) and the temperature measuring element (8) in parallel. A temperature measuring cavity is provided below the fixing member (3). A filling port (12) is provided on the side of the cylinder (1) to connect to the temperature measuring cavity. A filling solution is provided in the temperature measuring cavity. The temperature measuring cavity surrounds the measuring electrode (71). The filling solution is in contact with the measuring electrode (71). A buckle (11) is provided on the top of the cylinder (1) to connect to the bottom of the shell of the fish detector (7).

2. The detachable temperature compensation structure of the fish detector according to claim 1, characterized in that, The temperature compensation structure includes a docking structure, which includes an elastomer (4) and a conductive plate (2). The docking structure is set on the top of the fixing member (3). One end of the elastomer (4) is connected to the fixing member (3), and the other end of the elastomer (4) is provided with a conductive plate (2). The fish detector (7) includes a connecting contact point. When the buckle (11) is connected to the bottom of the shell of the fish detector (7), the shell compresses the elastomer (4) through the conductive plate (2). The conductive plate (2) connects the temperature measuring element (8) and the connecting contact point.

3. The detachable temperature compensation structure of the fish detector according to claim 2, characterized in that, The top of the fastener (3) is provided with a first retaining ring (31), the top of the first retaining ring (31) is engaged with the top of the temperature measuring element (8), and the elastomer (4) is located inside the first retaining ring (31).

4. The detachable temperature compensation structure of the fish detector according to claim 3, characterized in that, The side of the retaining ring is provided with an arc-shaped protrusion (32), and the temperature measuring element (8) is closely attached to the inner arc of the protrusion (32). The elastic body (4) and the protrusion (32) clamp and restrict the movement of the temperature measuring element (8).

5. The detachable temperature compensation structure of the fish detector according to claim 4, characterized in that, The bottom of the fastener (3) is provided with a second retaining ring, and the inside of the second retaining ring is provided with a sealing ring.

6. The detachable temperature compensation structure of the fish detector according to claim 4, characterized in that, The fastener (3) is provided with a first filling channel (33), one end of which is connected to the filling port (12) on the side of the cylinder (1), and the other end of the first filling channel (33) is connected to the bottom of the fastener (3).

7. The detachable temperature compensation structure of the fish detector according to claim 4, characterized in that, The bottom of the fixing member (3) is closely fitted with the isolation member (5), and the isolation member (5) and the fixing member (3) press and fix the sealing ring. The temperature measuring cavity is composed of the bottom of the isolation member (5), the temperature measuring electrode and the cylinder (1).

8. The detachable temperature compensation structure of the fish detector according to claim 7, characterized in that, The isolation component (5) is vertically provided with a second filling channel (34), one end of the second filling channel (34) is connected to the first filling channel (33), and the other end of the second filling channel (34) is connected to the temperature measuring cavity at the bottom of the isolation component (5).

9. The detachable temperature compensation structure of the fish detector according to claim 8, characterized in that, The first filling channel (33) and the second filling channel (34) are provided with a filling tube (6). One end of the filling tube (6) is connected to the filling port (12), and the other end of the filling tube (6) is located inside the temperature measuring chamber. The part of the filling tube (6) located inside the temperature measuring chamber is annular. The annular part of the filling tube (6) surrounds the measuring electrode (71) and there is a gap between it and the measuring electrode (71). The annular part of the filling tube (6) is provided with a liquid outlet (61).

10. The detachable temperature compensation structure of the fish detector according to claim 9, characterized in that, The isolation element (5) is also provided with a temperature measuring channel (35), which allows the temperature measuring element (8) to extend from the fixing element (3) to the temperature measuring cavity, and the end of the temperature measuring element (8) is in contact with the filling tube (6).

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