CN112146731A

CN112146731A - Quick not damaged subassembly of survey with fish length and weight of survey

Info

Publication number: CN112146731A
Application number: CN202011019672.9A
Authority: CN
Inventors: 王思怿; 商照聪; 何源; 薛晓康; 张小沁
Original assignee: Shanghai Chemical Industry Testing Co ltd; Shanghai Research Institute of Chemical Industry SRICI
Current assignee: Shanghai Chemical Industry Testing Co ltd; Shanghai Research Institute of Chemical Industry SRICI
Priority date: 2020-09-24
Filing date: 2020-09-24
Publication date: 2020-12-29
Anticipated expiration: 2040-09-24
Also published as: CN112146731B

Abstract

The invention relates to a component for rapidly and nondestructively measuring the length and weight of a fish body for a test, which comprises a frame body, a downward pressing type weight measuring unit, a hanging beam, a length measuring scale, a fish holding hopper, a flexible silk screen and an image acquisition unit, wherein the downward pressing type weight measuring unit is connected to a bracket upright post, and the hanging beam is fixed on a measuring module, so that the hanging beam and a connector on the hanging beam are completely loaded on the upper surface of the measuring module, and the weight information of the load is acquired; the length measuring scale level sets up in down-pressure formula weight measuring unit below, and be connected to on the hanging beam, flexible silk screen connect in on the flourishing fish fill, flexible silk screen carries out the side direction flexible to fish and compresses tightly fixedly placing in flourishing fish fill, is convenient for pass through the length measuring scale carries out stable reading to fish length. Compared with the prior art, the invention has the advantages of simple structure, lower cost, good safety and good mobility, can directly and rapidly measure the body length and the weight of the test fish without damage, and is convenient to carry.

Description

Quick not damaged subassembly of survey with fish length and weight of survey

Technical Field

The invention relates to an animal body length and weight testing assembly, in particular to an assembly for rapidly and nondestructively measuring the body length and weight of a fish for a test.

Background

Along with the development of social economy and the improvement of the life quality of people, the awareness of people on environmental protection is further enhanced. Human risks awareness of environmental pollutants such as plasticizer, environmental hormone, dioxin and the like is continuously strengthened, and higher requirements are provided for risk control and detection technical means of environmental hazards. Environmentally hazardous materials include liquid or solid materials that contaminate aquatic environments and mixtures of such materials (e.g., preparations and waste). An aquatic environment may be considered to include aquatic organisms living in water, and the aquatic ecosystem of which they are a part. The basis for determining the environmental hazard is therefore the aquatic toxicity of the substance or mixture, which can of course be corrected for by further information about the interpretation and accumulation in the organism.

The basic elements of the classification of hazardous environmental substances (aquatic environment) are: a) acute toxicity of water; b) slow aquatic toxicity; c) may or may not actually form in vivo accumulation; d) (biological or non-biological) organic compound degradation. In general, it is generally accepted that toxicity data for species in the fresh water river ocean can be considered equivalent data, preferably data obtained from the world institute of control and compliance testing (OECD), or equivalent data obtained in accordance with the principles of laboratory specifications (GLP).

Aquatic acute toxicity refers to acute toxicity of chemicals, which can cause harm to organisms when exposed to the chemicals for a short time in water. Acute toxicity of water is generally determined by: fish were used for 96 hours LC50 (by compliance with tissue test guidelines 203 or equivalent). Aquatic slow toxicity refers to the slow toxicity of chemicals, and is a hazard to prolonged exposure to such toxicity in an aquatic environment. The data about slow toxicity is less than that about acute toxicity, and various test procedures are not standardized. Data obtained from the appropriate organizational test guidelines 210 (early stage of fish life) may be accepted. According to the data obtained from the fish test, the relevant substances meet the criteria of acute toxicity 1, slow toxicity 1 or slow toxicity 2, i.e. they should be classified as "hazardous environmental substances (aquatic environment)".

Therefore, the fish is an important research object of ecotoxicology, in the field of ecotoxicology research, zebra fish with small body size is generally adopted as a test object, and the length and the weight of the fish used for the test need to be measured before and after the test so as to ensure the integrity and the reliability of the test. In addition, fish is an important research object of ecological hydraulics, the body length of the fish is an important parameter of the swimming capability of the fish, and the body weight and the body length of the fish are two essential experimental measurement indexes. In most cases, researchers measure body length and weight by directly using a pressed fish sample and then using a ruler. In most cases, the fish will jump and struggle, sometimes even falling from the test bed. Not only inconvenient, but also can cause certain injuries to some rare fish species due to overstimulation.

In the research of aquatic animal nutrition experiments, the body length and the body weight of a fish sample need to be measured at different stages of growth, and the growth condition of each stage of the fish needs to be researched and recorded so as to facilitate the large-scale cultivation of the fish. Therefore, the device for measuring the length and the weight of the fishes is generally applied, and the existing device for measuring the length and the weight of the fishes has certain disadvantages in use. At present, the measurement of the weight and the length of the fish body in a laboratory has some problems that 1) the measurement of the weight and the length of the fish body is two independent links, on one hand, time and labor are wasted, and on the other hand, the fish body can be damaged, ill or even dead due to multiple operations, so that subsequent experiments can not be continued; 2) when the weight and the length of the fish body are measured, the fish is generally needed to be anesthetized, when the number of the measured samples is large, the fish is dead due to overlong anesthesia time, the device can reduce the anesthesia time of the fish, and the experimental fish is put back to the experimental culture facility as soon as possible; 3) at present, the wood plate for measuring the body length is easy to absorb water and become rough after being used for multiple times, and fish scales are easy to fall off when the body length is measured, and fish bodies are injured to infect germs.

Therefore, it is necessary to design a module for rapidly measuring the weight and body length of fish with less influence on the fish body, so that the weight and body length of the fish to be studied can be conveniently, rapidly and safely measured according to the requirements of experiments.

Chinese patent CN207610772U discloses a fish body length and weight measuring device, which comprises a glass box, a weight sensor, a fixing frame, an image acquisition device, an image acquisition card and a computer. Chinese patent CN205333167U discloses a fish body length and weight measuring device, which comprises a measuring box, a processor, a memory, a body length input device and a kind input device. The above-mentioned device has the following drawbacks to be overcome: the method is only suitable for big fishes and is not suitable for small fishes used in ecological toxicology tests, because the small fishes have high transparency, particularly tail fin parts, and the outlines of the fishes are difficult to determine by directly analyzing through an image algorithm; the device is suitable for dead fish and not suitable for live fish, and the difficulty in weighing and measuring the body length is large because the live fish can swing the body when being placed on the flat plate.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide the assembly for rapidly and nondestructively measuring the body length and the weight of the test fish, which has the advantages of simple structure, low cost, high safety and high mobility, can directly and rapidly measure the body length and the weight of the test fish without damage, and is convenient to carry.

The purpose of the invention can be realized by the following technical scheme:

the invention relates to a component for rapidly and nondestructively measuring the length and weight of a fish for a test, which comprises a frame body, a downward-pressing weight measuring unit, a hanging beam, a length measuring scale, a fish holding hopper, a flexible silk screen and an image acquisition unit, wherein the components specifically comprise:

the frame body is vertically provided with a bracket upright post;

the downward pressing type weight measuring unit is connected to the bracket upright post;

the suspension cross beam is fixed on the measuring module, so that the suspension cross beam and a connector on the suspension cross beam are completely loaded on the upper surface of the measuring module, and weight information of the load is obtained;

the length measuring scale is horizontally arranged below the lower pressure type weight measuring unit and connected to the hanging beam;

the fish holding hopper is connected to the suspension cross beam and arranged below the length measuring scale;

the flexible silk screen is connected to the fish holding bucket and used for laterally and flexibly compressing and fixing fish placed in the fish holding bucket, so that stable reading of the length of the fish is facilitated through the length measuring scale;

the image acquisition unit is arranged below the fish bucket and can acquire the picture of stable reading of the length measuring scale on the fish body.

Furthermore, the lower pressing type weight measuring unit is movably clamped on the bracket upright post and can be adjusted in the vertical position.

Further, the downward-pressing weight measuring unit is an electronic balance or a pressure sensor.

Furthermore, the length measuring scale is a double vernier caliper, and a measuring clamp is movably sleeved on the double vernier caliper.

Further, the fish holding bucket comprises a fish holding bucket main body and two fish holding bucket arms;

the fish holding bucket main body is vertical to the water surface;

the plane of the double vernier calipers and the main body of the fish bucket are coplanar;

when one end of the measuring clamp slides along the length direction of the double vernier calipers, the other end of the measuring clamp is pressed on the fish containing bucket main body to carry out position adjustment, so that the length of the fish is matched.

Furthermore, the two arms of the fish holding bucket are rigid plate bodies vertical to the fish holding bucket main body;

the two arms of the fish bucket are provided with notches.

Furthermore, one side of the flexible silk screen is connected with the lower edge of the fish holding bucket main body, and the other side of the flexible silk screen is provided with a hanging shaft which can be limited on the notch, so that the flexible silk screen is pressed on the fish holding bucket main body.

Further, the assembly for measuring the body length and the body weight of the test fish further comprises a water removal tank, and water absorption paper is arranged in the water removal tank.

Furthermore, the component for measuring the body length and the body weight of the test fish further comprises a receiving vessel and a fish fishing net;

the fishing net can transfer the fish temporarily stored in the receiving vessel to a water removal tank, and after water on the fish body is absorbed, the fish is transferred to a limiting structure formed by a fish holding bucket and a flexible wire mesh through the fishing net.

Further, the image acquisition unit is a camera;

the downward pressing type weight measuring unit is an electronic balance;

the camera and the electronic balance are respectively and electrically connected with an external computer.

The computer acquires picture information obtained by the camera and weight information obtained by the electronic balance in real time, clearly displays a length scale interval corresponding to a clamping interval of the measuring pliers in the picture information, and acquires a length value in a reading mode of the double vernier calipers.

Compared with the prior art, the invention has the following technical advantages:

1. the whole measuring assembly is simple in structure, convenient to manufacture, low in cost, convenient and simple to operate, good in using effect, free of damage to fish used for testing, good in economical efficiency and excellent in environmental performance;

2. the body weight and body length of the fish can be measured in a short time by using the electronic balance and the double-vernier caliper with the long measuring clamp, the method is efficient, convenient and fast, easy to popularize and use in aquatic animal nutrition and ecological toxicology experiments, convenient to carry and labor-saving;

3. the device has good mobility, is convenient to carry and carry on the vehicle, and can be directly used for testing the fish for the test in various scenes;

4. the height can be adjusted by the aid of the additional telescopic upright columns of the balance bracket to meet different use requirements, and the balance bracket is convenient and practical;

5. the body length of the fishes is adjusted and measured by the double vernier calipers with the length measuring pliers, and the weight is measured by the balance, so that the measuring effect is better, and the body length and the weight of the fishes can be directly, rapidly and accurately measured;

6. the fish holding bucket with the fixed flexible silk screen is used for quickly holding the fish for the test, so that a fish sample can be fixed when the length of the fish is measured, the fish is prevented from falling off, and the accuracy of measuring the body length and the body weight of the fish is improved;

7. the water removal tank with the water absorption paper inside can quickly absorb the water on the surface of the fish body for the test, remove the fish for the test at any time for quick measurement, ensure that the fish for the test is not damaged and infected, and is easy for subsequent fish domestication;

8. the external computer and the camera directly and automatically record and store the body length, the weight and the image data information of the fish for the test.

Drawings

FIG. 1 is a schematic structural diagram of the assembly for rapid non-invasive determination of body length and body weight of test fish according to the present invention;

FIG. 2 is a schematic structural view of a receiving vessel according to the present invention;

FIG. 3 is a schematic structural view of the fishing net of the present invention;

FIG. 4 is a schematic view of the water removing tank of the present invention.

In the figure: 1-bracket upright column, 2-electronic balance, 3-suspension cross beam, 4-double vernier caliper, 5-caliper push-pull rod, 6-long measuring pliers, 7-fish holding bucket, 8-notch, 9-flexible silk screen, 10-hanging shaft, 11, bearing vessel, 12, fish fishing net, 13, water removing tank, 14-camera and 15-computer.

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments.

The quick fish body length and weight assembly for nondestructive testing in the embodiment comprises a frame body, a downward-pressing weight measuring unit, a hanging beam 3, a length measuring scale, a fish containing hopper 7, a flexible silk screen 9 and an image acquisition unit, and mainly comprises a weight measuring structure, a length measuring structure and an auxiliary part structure in the aspect of main body functions, and the following specific explanation is carried out.

Weight measuring structure

The support body is vertically provided with a bracket upright post 1, and the downward pressing type weight measuring unit is connected to the bracket upright post 1. The suspension cross beam 3 is fixed on the measuring module, so that the suspension cross beam 3 and a connecting object on the suspension cross beam are completely loaded on the upper surface of the measuring module, the weight information of the load is obtained, and the length measuring scale is horizontally arranged below the lower pressure type weight measuring unit and connected to the suspension cross beam 3. The electronic balance 2 is fixed and height-adjusted by the balance bracket upright post 1, and the center of the electronic balance is provided with a suspension beam 3. The suspension cross beam 3 is of a frame structure or a semi-frame structure, the cross rod in the middle of the suspension cross beam 3 needs to ensure that all loads are uniformly applied to the upper surface of the electronic balance, and the connecting rods on two sides of the suspension cross beam 3 need to be fixedly connected with the double vernier calipers 4 and the fish holding bucket 7. The flexible stand of balance bracket can height-adjusting in order to satisfy different user demands, and is comparatively convenient practical, adjusts the measurement length of body through the two slide caliper rule of addding the long pincers of measuring of area simultaneously, is equipped with the balance and carries out the weight determination, and external computer and camera keep and note its photo data with the length of body and the weight data automatic recording of experimental fish.

Length measuring structure

The lower end of the suspension beam 3 is connected with a double-vernier caliper 4, a caliper push-pull rod 5 is arranged on the double-vernier caliper 4, a long measuring clamp 6 is arranged at the lower end of the double-vernier caliper 4, and the body length of the fish for the test is measured by using the long measuring clamp 6. Simultaneously two slide caliper 4 lower extremes are equipped with flourishing fish fill 7, and flourishing fish fill 7 upper limit has breach 8, sub-unit connection flexible wire net 9 and peg 10, and flexible wire net 9 is fixed carrying out the side direction flexible compaction to placing fish in flourishing fish fill 7, is convenient for pass through length measurement chi stabilizes the reading to fish body length, holds experimental fish through being fixed in the breach 8 department on flourishing fish fill 7 with peg 10, leaks except that unnecessary moisture, can accomplish the body length and the weight measurement of experimental fish simultaneously. This subassembly is used through the collocation to the fixed flexible silk screen of the fish sample of addding and flourishing fish fill, can carry out length measurement to the fish and play the fixed action to the fish sample, has improved the accurate nature of measuring fish length when avoiding the fish landing.

Auxiliary member structure

Referring to fig. 2 to 4, a receiving vessel 11 for containing water is arranged below the test fish container, and can be used for containing test fish. The components matched with the weight and length measuring component comprise a fish receiving vessel 11 filled with water, a fishing net 12 and a water removing tank 13 filled with water absorbing paper, and the body length and the weight of the fish for the test can be directly and rapidly measured in a one-step and nondestructive mode. The external computer 15 and the camera 14 directly and automatically record and store the body length, the weight and the image data information of the fish for the test.

The whole quick fish body length and weight nondestructive testing assembly is simple in structure, convenient and simple to operate, efficient and convenient in use effect and nondestructive. The invention has the advantages of convenient manufacture, low cost, easy popularization and use in aquatic animal nutrition and ecological toxicology experiments, convenient transportation, labor saving and capability of simultaneously finishing the measurement work of the weight and the body length of the fish in a short time.

When the assembly is used, the following steps can be adopted:

1. adding a fish sample to be detected into a receiving vessel 11 filled with water, and placing the receiving vessel 11 under a fish holding bucket 7;

2. fishing out the fish for test by using the fishing net 12 and placing the fish into the water removing tank 13, wherein the water absorbing paper is filled in the water removing tank 13 to absorb the body surface moisture of the fish sample to be measured, so that the measuring effect is more accurate;

3. carefully placing the fish sample in the fish holding bucket 7, and hanging and buckling a hanging shaft 10 below a flexible silk screen 9 at the lower end of the fish holding bucket 7 at a notch 8 on the fish holding bucket 7, so that the fish sample to be detected is quickly and safely placed in the fish holding bucket 7;

4. after the numerical value of the electronic balance is stable, the computer automatically reads the weight numerical value and records the numerical value;

5. the double vernier calipers with long measuring pliers are moved, the length of a fish sample can be directly measured, and the camera automatically takes down image data of the fish for test and transmits the image data to the computer to automatically record image information;

6. after the length and weight data information of the fish to be tested is automatically recorded and stored by a computer, the hanging shaft 10 is taken down from the notch 8 on the fish holding bucket 7, so that the fish sample slightly slides into a water holding vessel 11.

The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.

Claims

1. The utility model provides a subassembly of quick not damaged survey for experiment fish length and weight which characterized in that includes:

the frame body is vertically provided with a bracket upright post (1);

the downward pressing type weight measuring unit is connected to the bracket upright post (1);

the suspension cross beam (3) is fixed on the measuring module, so that the suspension cross beam (3) and a connector on the suspension cross beam are completely loaded on the upper surface of the measuring module, and weight information of the load is obtained;

the length measuring scale is horizontally arranged below the lower pressure type weight measuring unit and is connected to the hanging beam (3);

the fish holding hopper (7) is connected to the suspension cross beam (3) and arranged below the length measuring scale;

the flexible silk screen (9) is connected to the fish holding bucket (7), and the flexible silk screen (9) is used for laterally flexibly compressing and fixing fish placed in the fish holding bucket (7) so as to facilitate stable reading of the length of the fish through the length measuring scale;

the image acquisition unit is arranged below the fish holding bucket (7) and can acquire pictures of stable readings of the length measuring scale on the fish body.

2. The assembly for rapid non-invasive determination of fish body length and weight according to claim 1, wherein the downward-pressing weight-measuring unit is movably clamped to the bracket upright (1) and can be adjusted in vertical position.

3. The assembly for the rapid non-invasive determination of fish body length and weight according to claim 1, wherein the down-pressure weight measuring unit is an electronic balance or a pressure sensor.

4. The assembly for the rapid non-invasive determination of fish body length and weight according to claim 1, wherein the length measuring ruler is a double vernier caliper, and a measuring clamp (6) is movably sleeved on the double vernier caliper.

5. The assembly for the rapid non-invasive determination of fish length and weight for test according to claim 4, wherein the fish hopper (7) comprises a fish hopper body and two fish hopper arms;

the fish holding bucket main body is vertical to the water surface;

when one end of the measuring clamp (6) slides along the length direction of the double vernier calipers, the other end of the measuring clamp (6) is pressed against the fish containing bucket main body to adjust the position so as to match the length of the fish.

6. The assembly for the rapid non-invasive determination of fish body length and weight according to claim 5, wherein the arms of the bucket are rigid plates perpendicular to the main body of the bucket;

the two arms of the fish bucket are provided with notches (8).

7. The assembly for rapid non-destructive testing of fish body length and weight according to claim 6, wherein one side of the flexible silk screen (9) is connected to the lower edge of the main body of the fish bucket, and the other side is provided with a hanging shaft (10), the hanging shaft (10) can be limited on the notch (8), so that the flexible silk screen (9) is pressed on the main body of the fish bucket.

8. The assembly for the rapid and non-invasive determination of the length and weight of a test fish according to claim 1, further comprising a water removal tank (13), wherein the water removal tank (13) is provided with a water absorbing paper.

9. The assembly for the rapid non-invasive determination of the length and weight of test fish according to claim 8, wherein the assembly for the determination of the length and weight of test fish further comprises a receiving vessel (11) and a fishing net (12);

the fishing net (12) can transfer the fish temporarily stored in the receiving vessel (11) to the water removal tank (13), and after water on the fish body is absorbed, the fish is transferred to the limiting structure formed by the fish holding bucket (7) and the flexible silk screen (9) through the fishing net (12).

10. The assembly for the rapid non-invasive determination of fish length and weight for testing according to claim 1, wherein the image acquisition unit is a camera (14);

the downward-pressing weight measuring unit is an electronic balance (2);

the camera (14) and the electronic balance (2) are respectively and electrically connected with an external computer (15).