A multi-dimensional measurement device and method for larvae and juveniles

Abstract

The present invention provides a multi-dimensional measurement device and method for fry, which relates to the field of measurement technology, and comprises a storage container 1 and a storage container 2 for placing fry, a detection device is installed between the storage container 1 and the storage container 2, the detection device comprises a detection pipeline and a storage pipeline, a conduction control device is installed between the detection pipeline and the storage pipeline, the conduction control device comprises a hollow control housing, a vertically arranged partition plate is installed in the middle position of the control housing, the partition plate divides the inner wall of the control housing into a first control chamber connected to the detection pipeline and a second control chamber connected to the storage pipeline, and a conduction opening connecting the two control chambers is opened on the side wall of the partition plate. The invention ensures that the measurement results of fry are accurate, and greatly improves the efficiency of multi-dimensional measurement of fry.

Description

Technical Field

[0001] The present invention relates to the field of measurement technology, and in particular to a multi-dimensional measurement device and method for fish larvae and juveniles. Background Art

[0002] Fish fry are an important part of fishery resources. The morphological indicators of fish fry need to be measured in fishery resource surveys; in the process of breeding and raising fry, fish fry need to be measured and screened. For small fish fry, traditional structures such as splints and rollers are difficult to effectively limit the position of fish fry. At the same time, contact fishing is required during the live measurement of fish fry. The fish fry themselves have not yet fully developed. The traditional method is easy to cause damage to the surface of the fish fry, which affects the subsequent growth of the fish fry and affects the accuracy of the measurement results.

[0003] Some designs also place fish in a special pipe and control the fish flow to the detection position in the middle of the pipe to achieve non-contact detection of fish, which effectively solves the problem of contact damage mentioned above.

[0004] However, for fish larvae and fry, their size is relatively small, and a single straight pipe is difficult to adjust the positions of multiple fish larvae and fry in an orderly and precise manner. During the measurement process, the measurement personnel need to coordinate and accurately control the liquid flow direction, liquid flow rate, and the opening and closing conditions on both sides. The operation process is relatively cumbersome, which reduces the efficiency of fish larvae and fry measurement. Summary of the invention

[0005] In view of the above problems, the present invention provides a device and method for multi-dimensional measurement of larvae and fry, which ensures the accuracy of the measurement results of larvae and fry while greatly improving the efficiency of multi-dimensional measurement of larvae and fry.

[0006] To solve the above problems, the technical solution adopted by the present invention is:

[0007] A multi-dimensional measurement device for fry, comprising a storage container 1 and a storage container 2 for placing fry, a detection device is installed between the storage container 1 and the storage container 2, the detection device comprises a detection pipeline and a storage pipeline, a conduction control device is installed between the detection pipeline and the storage pipeline, the conduction control device comprises a hollow control shell, a vertically arranged partition plate is installed in the middle position of the control shell, the partition plate divides the inner wall of the control shell into a first control chamber connected to the detection pipeline and a second control chamber connected to the storage pipeline, and a conduction opening connected to the two control chambers is opened on the side wall of the partition plate; the first control chamber is connected to the first control pipeline, the second control chamber is connected to the second control pipeline, and the inner wall of the control shell is further provided with a control valve group for controlling the opening and closing of the conduction opening; wherein, when the control valve group is in a conducting state, the fry is controlled to move from the storage pipeline to the detection pipeline to complete the multi-dimensional measurement; when the control valve group is in a closed state, the positions of the fry in the storage pipeline and the detection pipeline are controlled separately.

[0008] Preferably, it also includes a limiting device for limiting the position of the fry, and the limiting device includes a limiting component 1 installed in the detection pipe and a limiting component 2 installed in the storage pipe.

[0009] Preferably, a sensing element for detecting the passage of fry and juvenile fish is installed on the side of the second limiting component away from the conduction control device, and the sensing element is electrically connected to the second limiting component.

[0010] Through the above structural design, there is no need for measurement personnel to manually limit the position, which improves the automation efficiency and further improves the efficiency of fish fry detection.

[0011] Preferably, a detection area is provided in the middle of the detection pipe, and the detection area includes a detection end on which a detection element is installed and a reduction end on which a reduction device is installed, and the detection end and the reduction end are parallel to each other.

[0012] Preferably, the shrinkage device includes a shrinkage end installed on the inner side of the detection area and a driving base installed on the outer side of the detection area, the shrinkage end includes a first shrinkage part located in the middle and a second shrinkage part located on both sides, and the shrinkage ratio of the first shrinkage part is smaller than the shrinkage ratio of the second shrinkage part.

[0013] Preferably, the shrinkage end comprises an arc-shaped shrinkage plate or a shrinkage airbag.

[0014] Preferably, the control valve group comprises a control shaft, a control valve flap is fixed to the side wall of the control shaft, wherein the conducting opening is located on the deflection path of the control valve flap, and a driving element for driving the control shaft to rotate is mounted on the outer wall of the control housing.

[0015] Preferably, a pumping device connected to the control shaft is also installed on the outer wall of the control housing. The pumping device is driven during the rotation of the control shaft, and the auxiliary medium is pumped into the first control chamber through the pumping device.

[0016] Preferably, the pumping device includes a pumping shell, the inner wall of the pumping shell is rotatably connected to a pumping shaft, the pumping shaft is fixedly connected to a control shaft, a first pumping plate is fixed to the side wall of the pumping shaft, a second pumping plate is fixed to the inner wall of the pumping shell, a pumping chamber is formed between the first pumping plate and the second pumping plate, the pumping chamber is connected to a first pumping pipe and a second pumping pipe with a built-in one-way valve, and the first pumping pipe is connected to a first control chamber.

[0017] A multi-dimensional measurement method for larvae and juveniles uses the above-mentioned multi-dimensional measurement device for larvae and juveniles, comprising the following steps: S1, adjusting a control valve group to be in a closed state, controlling the direction of liquid flow in a second control pipeline to capture larvae and juveniles into a storage pipeline; controlling the direction of liquid flow in a first control pipeline to adjust the position of larvae and juveniles in a detection pipeline; S2, adjusting the control valve group to be in a conducting state, controlling the liquid flow to flow from the storage pipeline into the detection pipeline in a directional manner, discharging the larvae and juveniles that have been detected in the detection pipeline, and sending the larvae and juveniles captured in the storage pipeline into the detection pipeline to complete multi-dimensional measurement.

[0018] The beneficial effects of the present invention are:

[0019] Through the above structural design, the detection pipeline and the storage pipeline can be separated and controlled separately through the conduction control device, and the position of the fry in the detection pipeline can be slightly adjusted, and the fry in the second storage container can be quickly captured and put into the storage pipeline for preparation, and the two will not affect each other, ensuring that the measurement results of the fry are accurate, and greatly improving the efficiency of multi-dimensional measurement of the fry; and non-contact measurement is realized in the process of measuring the fry, avoiding damage to the surface of the fry, and ensuring the subsequent normal growth of the fry and the accuracy of the measurement parameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 For the present invention Figure 1 Schematic diagram of the top view structure.

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the detection pipeline, storage pipeline and conduction control device of the present invention.

[0023] Figure 4 For the present invention Figure 3 Schematic diagram of the main structure.

[0024] Figure 5 For the present invention Figure 3 Schematic diagram of the top view structure.

[0025] Figure 6 For the present invention Figure 3 Schematic diagram of the side structure.

[0026] Figure 7 For the present invention Figure 6 BB section structure schematic diagram.

[0027] Figure 8 For the present invention Figure 4 A is an enlarged structural diagram of FIG.

[0028] Fig. 9 For the present invention Figure 7 Enlarged structural diagram at C.

[0029] Fig.10 Schematic diagram of the internal structure of the detection area of ​​the present invention.

[0030] In the figure: 100, storage container 1; 200, storage container 2; 300, detection pipeline; 310, detection area; 311, detection end; 312, limit end; 320, limit component 1; 321, limit structure 1; 322, limit structure 2; 330, limit device; 331, driving base; 332, limit end; 3321, first limit part; 3322, second limit part; 400, storage pipeline; 410, limit component 2; 411, limit structure 3; 412, limit structure 4; 500, conduction control device; 510, control housing; 5101, first control chamber; 5102, second control chamber; 511, partition plate; 512, conducting opening; 520, first control pipeline; 521, filter baffle one; 530, second control pipeline; 531, filter baffle two; 540, pumping device; 5401, pumping chamber; 541, pumping housing; 542, pumping shaft; 543, first pumping plate; 544, second pumping plate; 545, second pumping pipeline; 546, first pumping pipeline; 550, control valve group; 551, control shaft; 552, control valve flap; 560, driving element. DETAILED DESCRIPTION

[0031] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0032] Larvae and fry are the initial stage of fish growth after hatching. Compared with adult fish, most of them are smaller in size and their organs are not yet fully developed. Multi-dimensional measurements of larvae and fry during their growth process can obtain their multi-dimensional growth parameters, infer their growth status, and make timely adjustments to the breeding environment and methods.

[0033] For mature fish, some studies have used structures such as splints and rollers to limit the position of mature fish to ensure their stability during multi-dimensional measurements, so as to measure the length, width and height of their body, the development and distribution of surface scales, etc., to ensure the accuracy of the measurement results; some designs will add anesthetics to the boxes where fish are stored to reduce the stress level of the fish and facilitate measurement.

[0034] The above method can efficiently measure larger fish; however, it is difficult to effectively limit the position of smaller fish fry. At the same time, the fish fry need to be contacted and salvaged during the measurement process. The fish fry themselves are not fully developed, and the traditional method is likely to cause damage to the surface of the fish fry during the operation, which affects the subsequent growth of the fish fry and affects the accuracy of the measurement results.

[0035] Some designs place fish in a special pipe and control the fish flow to the detection position in the middle of the pipe to achieve non-contact detection of fish, which effectively solves the problem of contact damage mentioned above. However, for larvae and juveniles, their size is small, and a single straight pipe is difficult to adjust the positions of multiple larvae and juveniles in an orderly and accurate manner. During the measurement process, the measurement personnel need to coordinate and accurately control the liquid flow direction, liquid flow rate and the opening and closing conditions on both sides. The operation process is relatively cumbersome, which reduces the efficiency of larvae and juvenile measurement.

[0036] In order to solve the above problems, refer to the attached Figure 1 -Attached Fig.10 A multi-dimensional measurement device for fry, comprising a storage container 100 and a storage container 200 for placing fry, a detection device is installed between the storage container 100 and the storage container 200, the storage container 100 and the storage container 200 are both filled with liquid for storing fry, the fry enter the detection device from the storage container 200 for multi-dimensional detection, the fry after measurement are discharged from the detection device into the storage container 100 for collection, the position of the fry is adjusted by controlling the direction of liquid flow during the whole measurement process, non-contact measurement is achieved in the process of measuring the fry, damage to the surface of the fry is avoided, and the subsequent normal growth of the fry and the accuracy of the measurement parameters are ensured.

[0037] Specifically, the detection device includes a detection pipe 300 and a storage pipe 400, and a conduction control device 500 is installed between the detection pipe 300 and the storage pipe 400. The conduction control device 500 controls the conduction state of the detection pipes 300 and the storage pipes 400 on both sides to control the continuous movement of fry in the two or control the separate control of the fry in the two.

[0038] The conduction control device 500 includes a hollow control shell 510, and a vertically arranged partition plate 511 is installed in the middle position of the control shell 510. The partition plate 511 divides the inner wall of the control shell 510 into a first control chamber 5101 connected to the detection pipe 300 and a second control chamber 5102 connected to the storage pipe 400. The side wall of the partition plate 511 is provided with a conduction opening 512 connecting the two control chambers; when the control conduction opening 512 is in an open state, the fry can be directed to move from the storage pipe 400 to the detection pipe 300 to complete multi-dimensional measurement, and obtain a number of data such as fry length parameters and surface normal parameters.

[0039] Furthermore, in order to achieve separate control of the positions of fry in the detection pipe 300 and the storage pipe 400, the first control chamber 5101 is connected to a first control pipe 520, the second control chamber 5102 is connected to a second control pipe 530, and the inner wall of the control housing 510 is also provided with a control valve group 550 for controlling the opening and closing of the conducting opening 512. Here, the first control pipe 520 and the second control pipe 530 are both externally connected to separate control devices to adjust the direction of internal liquid flow.

[0040] In the conveying stage, when the control valve group 550 is in the conducting state, the fish fry are controlled to move from the storage pipe 400 to the detection pipe 300 to complete the multi-dimensional measurement; when the control valve group 550 is in the closed state, the positions of the fish fry in the storage pipe 400 and the detection pipe 300 are controlled separately. By controlling the positions of the fish fry in the detection pipe 300 separately, the fish fry can be adjusted to be located at a suitable position for multi-dimensional measurement, thereby ensuring the accuracy of the detection results and improving the efficiency of the multi-dimensional measurement.

[0041] By individually controlling the position of the fish larvae and fry in the storage pipe 400, a predetermined number of fish larvae and fry outside can be sucked into the storage pipe 400, and the fish larvae and fry in this part are controlled to be in a state ready for measurement. There is no need to wait too long for the detection pipe 300 after measurement, which further improves the efficiency of multi-dimensional measurement of fish larvae and fry.

[0042] The bottom of the second control pipe 530 here can be connected to the storage container 2 200, and the first control pipe 520 here can be connected to the storage container 1 100, and a pump body and a filter baffle are built in the second control pipe 530 and the first control pipe 520. The two pump bodies can independently control the flow rate and direction of the liquid in the first control pipe 520 and the second control pipe 530, and can make fine adjustments to the position of the fry in the detection pipe 300. At the same time, the second control pipe 530 can increase the flow rate in the storage pipe 400, so that the fry in the storage container 200 can be quickly captured and put into the storage pipe 400 for preparation.

[0043] It should be noted that the number of fish larvae and fry captured by the storage pipe 400 is preferably one. For fish larvae and fry that are too small, multiple fish larvae and fry can be captured at the same time for synchronous multi-dimensional measurement.

[0044] In summary, through the above structural design, the detection pipe 300 and the storage pipe 400 can be separated and controlled separately through the conduction control device 500, and the position of the fry in the detection pipe 300 can be finely adjusted. At the same time, the fry in the storage container 200 can be quickly captured and put into the storage pipe 400 for preparation. The two will not affect each other, and the accuracy of the measurement results of the fry is ensured, while the efficiency of the multi-dimensional measurement of the fry is greatly improved; and contactless measurement is realized in the process of measuring the fry, avoiding damage to the surface of the fry, and ensuring the subsequent normal growth of the fry and the accuracy of the measurement parameters.

[0045] Furthermore, the measuring device also includes a limiting device for limiting the position of fry and juvenile fish, the limiting device includes a limiting component 1 320 installed in the detection pipe 300 and a limiting component 2 410 installed in the storage pipe 400. The limiting component 1 320 and the limiting component 2 410 can limit the positions of fry and juvenile fish in the detection pipe 300 and the storage pipe 400 separately, which can be combined with liquid flow control to ensure the accuracy of the measurement position of the fry and the capture quantity.

[0046] The limiting component 1 320 here includes a limiting structure 1 321 and a limiting structure 2 322 arranged at intervals, and the limiting component 2 410 here includes a limiting structure 3 411 and a limiting structure 4 412 arranged at intervals; the above-mentioned limiting structure can be selected as a retractable rod-shaped structure, and an inflatable airbag structure can also be selected, which can form an obstacle on the path of movement of fry and fry, limit the fry and fry to a predetermined range, and facilitate the detection and capture of the fry and fry.

[0047] Further, a sensing element for detecting the passage of fry and fry is installed on the side of the limiting component 2 410 away from the conduction control device 500, and the sensing element is electrically connected to the limiting component 2 410. The above-mentioned sensing element can be selected as an existing image detection element. When the fry and fry pass through, a signal can be sent toward the limiting component 2 410 to control the limiting structure 412 and the limiting structure 3 411 to be in a limited state successively, so that the fry and fry are restricted within the captured interval range, and the limiting structure 412 is used to prevent the fry and fry from entering the conduction control device 500 and affecting the equipment, and the limiting structure 3 411 can prevent the fry and fry on the outside from entering the storage pipe 400, so as to prevent the excessive number of fry and fry captured from affecting the normal measurement.

[0048] Please refer to the attached Figure 5 , Attachment Fig.10Specifically, a detection area 310 is set in the middle position of the detection pipeline 300, and the detection area 310 includes a detection end 311 installed with a detection element and a limit end 312 installed with a limit device 330. The limit end 312 can further limit the fry and fry to ensure the stability of its detection position and detection posture. The fry and fry can be detected and measured by the detection end 311 to obtain multi-dimensional measurement results. The detection end 311 and the limit end 312 are parallel to each other. The above-mentioned detection elements select appropriate multi-dimensional measurement elements according to the measurement requirements. The image detection element can be selected to shoot the surface development state of the fry and fry, and the distance measuring element can be selected to perform multi-dimensional measurement on the growth length of the fry and fry.

[0049] It should be noted here that the outer side of the detection end 311 can be wrapped with dark-colored materials to prevent external light from affecting the measurement process. At the same time, the detection end 311 and the reduction end 312 are arranged in parallel to facilitate the installation of related equipment and reduce the impact of light propagation on the detection results.

[0050] Specifically, the limiting device 330 includes a limiting terminal 332 installed on the inner side of the detection area 310 and a driving base 331 installed on the outer side of the detection area 310. The driving base 331 can drive the limiting terminal 332 on the inner side to move, and the moving limiting terminal 332 can move toward the detection end 311, further limiting the range of activities of larvae and fry, so that the larvae and fry are in a relatively parallel posture with the detection end 311, further ensuring the accuracy of the measurement results.

[0051] The shrinkage end 332 includes a first shrinkage portion 3321 located in the middle and second shrinkage portions 3322 located on both sides. The shrinkage ratio of the first shrinkage portion 3321 is less than the shrinkage ratio of the second shrinkage portion 3322. It should be noted that the shrinkage ratio here refers to the ratio of the distance moved by the shrinkage portion per unit time to the remaining distance between the shrinkage portion and the inner wall of the detection end 311. The shrinkage ratio of the second shrinkage portions 3322 on both sides is controlled to be greater than the shrinkage ratio of the first shrinkage portion 3321 in the middle, which can control the two sides of the shrinkage end 332 to be in a state of rapid shrinkage, so that the fry can be located near the middle of the shrinkage end 332, thereby achieving efficient and accurate shrinkage, ensuring the accuracy of the position of the fry after shrinkage, and thus ensuring the accuracy of the measurement results.

[0052] The shrinkage end 332 here includes an arc-shaped shrinkage plate or a shrinkage airbag. The arc-shaped shrinkage plate can refer to the attached Fig.10 The middle part is concave, which can effectively limit the fry and juveniles; the limiting airbag here can also be selected to have the same shape as the limiting plate, and then the expansion rate of each position of the limiting airbag can be controlled to be the same.

[0053] Similarly, the limiting airbag here can be composed of two parts with different expansion rates, and the expansion rates on both sides of the limiting airbag are controlled to be greater than the expansion rate in the middle, so that the two sides can expand rapidly to initially limit the activity range of the fry and fry, and then the whole is controlled to expand synchronously, and the fry and fry are controlled to move toward the detection end 311, so that the side wall of the fry and fry is as close to the inner wall surface of the detection end 311 as possible, so as to ensure the stability of the subsequent measurement process and the accuracy of the measurement results.

[0054] Please refer to the attached Figure 6 , Attachment Fig. 9 Specifically, the control valve group 550 includes a control shaft 551, and a control valve flap 552 is fixed to the side wall of the control shaft 551, wherein the conduction opening 512 is located on the deflection path of the control valve flap 552, and the outer wall of the control housing 510 is installed with a driving element 560 for driving the control shaft 551 to rotate. The driving element 560 here can be selected as a motor for rotation control. The control valve group 550 is controlled to rotate by the driving element 560, so that the control valve flap 552 can fit with the surface of the conduction opening 512, thereby sealing the inside of the conduction control device 500, avoiding mixing of the liquid flows in the detection pipeline 300 and the storage pipeline 400, and ensuring the stable control of the liquid flows in the detection pipeline 300 and the storage pipeline 400.

[0055] A pumping device 540 connected to the control shaft 551 is also installed on the outer wall of the control housing 510. The pumping device 540 is started during the rotation of the control shaft 551, and the auxiliary medium is pumped into the first control chamber 5101 through the pumping device 540. The auxiliary medium here can be selected as an anesthetic agent. During the opening and closing process of the control valve group 550, a certain amount of anesthetic agent can be pumped into the first control chamber 5101 to anesthetize the fry and fry, which can reduce their subsequent activities. The position of the fry and fry can be accurately adjusted by controlling the direction of the liquid flow in the detection pipeline 300, which further improves the efficiency and accuracy of the control of the fry and fry, and improves the efficiency of the fry and fry detection.

[0056] Through the above-mentioned structural design, a certain amount of anesthetic agent can be pumped into the first control chamber 5101 during a single flipping and closing process of the control valve group 550, so as to achieve precise anesthesia of a single batch of fry and juvenile fish. At the same time, the overall control process is carried out automatically without the need for separate control and intervention, which simplifies the structural layout and improves the efficiency of anesthetic agent delivery.

[0057] The above-mentioned anesthetic agent can select existing anesthetic agents. It should also be noted here that the delivery of the anesthetic agent is carried out synchronously during the rotation of the control valve flap 552. Due to the directional flow of the internal liquid flow, there is no need for the problem of unidirectional anesthetic leakage. Even if a small amount of anesthetic agent leaks, it can play a calming role on the fry in the storage pipe 400 and will not affect the subsequent multi-dimensional measurement.

[0058] Please refer to the attached Figure 8 Preferably, the pumping device 540 includes a pumping shell 541, the inner wall of the pumping shell 541 is rotatably connected to a pumping shaft 542, the pumping shaft 542 is fixedly connected to a control shaft 551, a first pumping plate 543 is fixed to the side wall of the pumping shaft 542, a second pumping plate 544 is fixed to the inner wall of the pumping shell 541, a pumping chamber 5401 is formed between the first pumping plate 543 and the second pumping plate 544, the pumping chamber 5401 is connected to a first pumping pipe 546 and a second pumping pipe 545 with a built-in one-way valve, the first pumping pipe 546 is connected to the first control chamber 5101, and the anesthetic agent on the outside can be sucked in or pumped out during the process of controlling the rotation of the first pumping plate 543.

[0059] Specifically, during the clockwise rotation of the first pumping plate 543, the existing medicine in the pumping chamber 5401 can be pumped unidirectionally into the first control chamber 5101 through the first pumping pipe 546. During the counterclockwise rotation of the first pumping plate 543, the medicine in the storage tank can be sucked into the pumping chamber 5401 through the second pumping pipe 545, which is automatically performed during the opening and closing of the valve group.

[0060] A pumping bag with reset elasticity may also be provided in the pumping chamber 5401 to reduce the sealing accuracy of the two pumping plates and ensure normal and stable pumping of the medicine.

[0061] The present invention is further described below in conjunction with the method.

[0062] A method for multi-dimensional measurement of larvae and juveniles, using the above-mentioned multi-dimensional measurement device for larvae and juveniles, comprises the following steps:

[0063] S1, adjusting the control valve group 550 to be in a closed state, controlling the flow direction of the liquid in the second control pipe 530 to capture the fry and fry into the storage pipe 400; controlling the flow direction of the liquid in the first control pipe 520 to adjust the position of the fry and fry in the detection pipe 300; in this process, the first control chamber 5101 and the second control chamber 5102 are in a relatively closed state, and the liquids in the two chambers will not affect each other, so the positions of the fry and fry in the detection pipe 300 and the storage pipe 400 can be adjusted separately.

[0064] During this process, while the position of the fish larvae in the detection pipe 300 is finely adjusted, the flow rate in the storage pipe 400 can be increased through the second control pipe 530, and the fish larvae in the second storage container 200 can be quickly captured and put into the storage pipe 400 for preparation.

[0065] S2, adjusting the control valve group 550 to be in the conducting state, controlling the liquid flow to flow from the storage pipe 400 into the detection pipe 300 in a directional manner, discharging the fry and fry detected in the detection pipe 300, and sending the fry and fry captured in the storage pipe 400 into the detection pipe 300 to complete multi-dimensional measurement. Since the fry and fry are small in size, they can move in a directional manner under the action of the liquid flow. In this process, the fry and fry prepared in the storage pipe 400 are sent into the detection pipe 300 to complete the multi-dimensional measurement of the fry and fry, obtain multiple growth parameters of the fry and fry, and judge the growth status of the fry and fry.

[0066] By repeating the above steps, the fish larvae and fry can be measured continuously. Multiple groups of structures can be arranged in parallel between the storage container 100 and the storage container 200 to perform synchronous contactless measurement on multiple fish larvae and fry, which greatly improves the efficiency of measuring the fish larvae and fry.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-dimensional measurement device for fry, comprising a storage container 1 (100) and a storage container 2 (200) for placing fry, wherein a detection device is installed between the storage container 1 (100) and the storage container 2 (200), characterized in that: The detection device comprises a detection pipeline (300) and a storage pipeline (400); a conduction control device (500) is installed between the detection pipeline (300) and the storage pipeline (400); the conduction control device (500) comprises a hollow control housing (510); a vertically arranged partition plate (511) is installed in the middle of the control housing (510); the partition plate (511) divides the inner wall of the control housing (510) into a first control chamber (5101) communicating with the detection pipeline (300) and a second control chamber (5102) communicating with the storage pipeline (400); and a conduction opening (512) communicating with the two control chambers is provided on the side wall of the partition plate (511); The first control chamber (5101) is connected to a first control pipeline (520), the second control chamber (5102) is connected to a second control pipeline (530), and the inner wall of the control housing (510) is further provided with a control valve group (550) for controlling the opening and closing of the conduction opening (512); A detection area (310) is provided in the middle of the detection pipe (300), the detection area (310) comprising a detection end (311) on which a detection element is installed and a reduction end (312) on which a reduction device (330) is installed, the detection end (311) and the reduction end (312) being parallel to each other; The shrinkage device (330) comprises a shrinkage end (332) installed on the inner side of the detection area (310) and a driving base (331) installed on the outer side of the detection area (310); the shrinkage end (332) comprises a first shrinkage portion (3321) located in the middle and second shrinkage portions (3322) located on both sides; the shrinkage ratio of the first shrinkage portion (3321) is smaller than the shrinkage ratio of the second shrinkage portion (3322).

2. The multi-dimensional measuring device for larvae and juveniles according to claim 1, characterized in that: It also includes a limiting device for limiting the position of fry and juvenile fish, the limiting device including a limiting component 1 (320) installed in the detection pipe (300) and a limiting component 2 (410) installed in the storage pipe (400).

3. The multi-dimensional measuring device for larvae and juveniles according to claim 2, characterized in that: A sensing element for detecting the passage of fry and juvenile fish is installed on the side of the second limiting component (410) away from the conduction control device (500), and the sensing element is electrically connected to the second limiting component (410).

4. The multi-dimensional measuring device for larvae and juveniles according to claim 1, characterized in that: The shrinkage end (332) comprises an arc-shaped shrinkage plate or a shrinkage airbag.

5. The multi-dimensional measuring device for larvae and juveniles according to claim 1, characterized in that: The control valve assembly (550) comprises a control shaft (551), a control valve flap (552) being fixed to a side wall of the control shaft (551), wherein the conduction opening (512) is located on a deflection path of the control valve flap (552), and a driving element (560) for driving the control shaft (551) to rotate is mounted on an outer wall of the control housing (510).

6. The multi-dimensional measuring device for larvae and juveniles according to claim 5, characterized in that: The outer wall of the control housing (510) is also provided with a pumping device (540) connected to the control shaft (551). The pumping device (540) is driven during the rotation of the control shaft (551), and the auxiliary medium is pumped into the first control chamber (5101) through the pumping device (540).

7. The multi-dimensional measuring device for larvae and juveniles according to claim 6, characterized in that: The pumping device (540) comprises a pumping housing (541), the inner wall of the pumping housing (541) is rotatably connected to a pumping shaft (542), the pumping shaft (542) is fixedly connected to a control shaft (551), a first pumping plate (543) is fixed to the side wall of the pumping shaft (542), a second pumping plate (544) is fixed to the inner wall of the pumping housing (541), a pumping chamber (5401) is formed between the first pumping plate (543) and the second pumping plate (544), the pumping chamber (5401) is connected to a first pumping pipe (546) and a second pumping pipe (545) with a built-in one-way valve, and the first pumping pipe (546) is connected to a first control chamber (5101).

8. A multi-dimensional measurement method for larvae and juveniles, characterized in that: Using the multi-dimensional measurement device for larvae and juveniles according to any one of claims 1 to 7 comprises the following steps: S1, adjusting the control valve group (550) to a closed state, controlling the direction of the liquid flow in the second control pipeline (530) to capture the fry and juveniles into the storage pipeline (400); controlling the direction of the liquid flow in the first control pipeline (520) to adjust the position of the fry and juveniles in the detection pipeline (300); S2, adjusting the control valve group (550) to be in a conducting state, controlling the liquid flow to flow from the storage pipe (400) into the detection pipe (300) in a directional manner, discharging the fry and juveniles that have been detected in the detection pipe (300), and sending the fry and juveniles captured in the storage pipe (400) into the detection pipe (300) to complete multi-dimensional measurement.

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