Aquatic animal head-body ratio measuring device

Abstract

The utility model relates to a head-body ratio measuring device for aquatic animals, which comprises a workbench, a measuring scale is arranged on the workbench, and the measuring scale comprises a fixed arm and a rotating arm; the device further comprises a light generation assembly, the light generation assembly comprises a fixed light source and a movable light source, the fixed light source is arranged on the fixed arm, the light generation assembly has horizontal and vertical adjusting capacity, light emitted by the fixed light source and the movable light source is staggered on the aquatic animals to be tested, and measurable included angle light is formed on the workbench. The head-to-body ratio measuring device is suitable for measuring the head-to-body ratio of various aquatic animals, and is suitable for measuring the head-to-body ratio of aquatic animals with different thicknesses, such as procambarus clarkii, bighead carps and the like, in different sizes by adjusting the height of the movable measuring line.

Description

Technical Field

[0001] This utility model relates to the field of aquatic animal edible value selection and regulation technology, and in particular to a device for measuring the head-to-body ratio of aquatic animals. Background Technology

[0002] Red swamp crayfish and silver carp are common species in my country's inland waters. Their delicious taste and rich nutritional value make them popular with consumers, giving them significant market value and a promising future. The abdomen of the red swamp crayfish and the head of the silver carp are the main edible parts, and their quality determines their commercial value; therefore, the greater the proportion of these parts, the higher the value. However, how to easily determine the proportion of the abdomen and head in red swamp crayfish to better determine their commercial value and maximize economic benefits has become a difficult problem for aquaculture practitioners.

[0003] When testing the head-to-body ratio of aquatic animals, existing technologies have disclosed the use of rulers or cameras to capture the length between the head-to-body junction and the body-to-tail junction. However, considering the irregular shape of aquatic animals, it is difficult to eliminate the measurement influence of the animal's body curve contour. Therefore, the measurement results of existing technologies have large deviations and low applicability. Utility Model Content

[0004] In response to the shortcomings of the existing production technology, the applicant provides a reasonably structured aquatic animal head-to-body ratio measuring device, which can accurately measure the head-to-body ratio of aquatic animals, is applicable to various types of aquatic animals, and provides accurate and reliable measurement results.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A device for measuring the head-to-body ratio of aquatic animals includes a worktable with a measuring scale on it, the measuring scale including a fixed arm and a rotating arm; it also includes a light-generating component, which includes:

[0007] The light source is fixed and mounted on the fixed arm.

[0008] The movable light source has horizontal and vertical adjustment capabilities.

[0009] The light emitted by the fixed light source and the moving light source is interlaced on the aquatic animal to be tested, forming a measurable angle of light on the worktable.

[0010] As a further improvement to the above technical solution:

[0011] The fixed light emitted by the fixed light source is set collinearly with the fixed arm.

[0012] The relative height between the moving light source and the fixed light source is adjustable.

[0013] The rotating arm is equipped with a rotating platform, and a movable light source is installed on the rotating platform. The light emitted by the movable light source rotates synchronously with the rotating platform through the same angle.

[0014] The height of the rotating platform is adjustable.

[0015] An adjusting arm is installed on the side of the workbench, and a movable light source is installed at the rotating end of the adjusting arm. The light emitted by the movable light source rotates through the same angle as the adjusting arm rotates.

[0016] There are multiple adjusting arms, and a height difference is reserved between the multiple adjusting arms.

[0017] A darkroom is configured, and the testing equipment is built into the darkroom.

[0018] The beneficial effects of this utility model are as follows:

[0019] This invention is applicable to the measurement of head-to-body ratio in various aquatic animals. By adjusting the height of the movable measuring line, it is suitable for measuring the head-to-body ratio of aquatic animals of different thicknesses, such as the red swamp crayfish and silver carp, which vary in size. The added darkroom is used to enhance the brightness of the laser line, thereby improving the reading accuracy.

[0020] The principle behind this device for measurement is to calculate the head-to-body ratio of aquatic animals based on the angle formed by fixing and rotating the light source, using trigonometric functions. The advantage of this movable light source is its adjustable height. Compared to conventional solid measuring lines such as steel wires, light measurement is not affected by the uneven contours of the aquatic animal's body surface, ensuring the accuracy of the rotation angle. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0022] Figure 2 This is a front view of the overall structure of this utility model.

[0023] Figure 3 This is a schematic diagram illustrating the use of the adjusting arm and the measuring tape.

[0024] Figure 4 This is a schematic diagram illustrating an example of using this invention to measure crayfish.

[0025] The components include: 1. Workbench; 2. Measuring ruler; 3. First movable light source; 4. Second movable light source; 5. Third movable light source; 6. Display screen; 7. Stand;

[0026] 201. Fixed arm; 202. Rotating arm;

[0027] 301. Rotary table;

[0028] 401. Adjusting arm. Detailed Implementation

[0029] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0030] like Figures 1-4 As shown, the aquatic animal head-to-body ratio measuring device of this embodiment includes a worktable 1, on which a measuring scale 2 is provided. The measuring scale 2 includes a fixed arm 201 and a rotating arm 202; it also includes a light generating component, which includes:

[0031] The fixed light source is mounted on the fixed arm 201.

[0032] The movable light source has horizontal and vertical adjustment capabilities.

[0033] The light emitted by the fixed light source and the moving light source is interlaced on the aquatic animal to be tested, forming a measurable angle of light on the worktable 1.

[0034] The fixed light emitted by the fixed light source is arranged collinearly with the fixed arm 201.

[0035] The relative height between the moving light source and the fixed light source is adjustable.

[0036] A rotating platform 301 is provided on the rotating arm 202, and a movable light source is installed on the rotating platform 301. The light emitted by the movable light source rotates synchronously with the rotating platform 301 through the same angle.

[0037] The height of the rotary table 301 is adjustable. The rotary table 301 can adopt existing commercially available height adjustment structures, such as nested telescopic structures.

[0038] An adjusting arm 401 is provided on the side of the workbench 1. A movable light source is provided at the rotating end of the adjusting arm 401. The light emitted by the movable light source rotates through the same angle as the adjusting arm 401 rotates.

[0039] Multiple adjusting arms 401 are provided, and a height difference is reserved between the multiple adjusting arms 401.

[0040] A darkroom is configured, and the testing equipment is built into the darkroom.

[0041] The specific structure of this utility model and the steps for measuring using this measuring device are as follows:

[0042] The purpose of this invention is to provide a device for measuring the head-to-body ratio of aquatic animals with higher measurement accuracy, used to test the ratio of head length to body length of aquatic animals.

[0043] The measuring device includes a worktable 1, which can be divided into a grid of horizontal and vertical lines to allow for the determination of the movement path of the moving measuring line. A measuring scale 2 is placed on the worktable 1. The measuring scale 2 consists of a fixed arm 201 and a rotating arm 202. The fixed arm 201 is fixedly connected to the worktable 1. As an optional implementation, the laser beam emitted by a fixed laser source on the fixed arm 201 serves as a fixed light beam, used as a measurement reference line. A display screen 6 is provided on the measuring scale 2 to display the rotation angle.

[0044] There are two ways to install the movable light source: one is to directly mount the movable light source on the rotating arm 202, which then drives the movable light source to swing, so that the fixed light emitted by the fixed light source and the rotating light emitted by the movable light source form an angle; the other, as an alternative implementation, is to directly mount the rotatable movable light source on the fixed arm 201, so that the rotating light emitted by the movable light source can also form an angle with the fixed light. Figure 1 The first active light source 3 in the middle.

[0045] like Figure 1 and Figure 3 As shown, a support 7 is also provided on one side of the workbench 1. Multiple adjusting arms 401 are rotatably connected to the support 7. A movable light source is installed at the rotating end of each adjusting arm 401, such as... Figure 1 The second active light source 4 and the third active light source 5 are shown in the reference. When using them, refer to... Figure 3 The adjusting arm 401 rotates, causing the movable light source to rotate. The movable light shines downwards and intersects with the light emitted by the first movable light source 3 or the fixed light source, finding the measurement point and forming the triangle to be measured.

[0046] Reference Figure 4 If the intersection of the body and tail is used as the measurement point, during measurement, the rotating ray can rotate around the hinge point of the measuring ruler, forming an angle with the baseline measurement line. When the rotating ray passes through the intersection of the body and tail of the aquatic animal, the rotation stops, and the angle of rotation of the moving measuring ray is measured and recorded as α. The head-to-body ratio is then calculated using the following formula:

[0047]

[0048] Substituting the included angle α into the formula yields the head-to-body ratio.

[0049] If the head-body intersection is used as the measurement point, during measurement, the movable linear light source is rotated so that the movable measuring ray rotates around the rotation point, forming an angle with the reference measuring line. When the movable measuring ray passes through the head-body intersection of the aquatic animal, the rotation is stopped, and the angle of rotation of the movable measuring ray is measured and recorded as α. The head-body ratio is then calculated using the formula:

[0050]

[0051] Substituting the included angle α into the formula yields the head-to-body ratio.

[0052] The readings of the angle ruler corresponding to several head-to-body ratios can be calculated using the above formula. Then, the relationship between the head length and body length of aquatic animals can be determined by using the readings of the angle ruler.

[0053] For example, by calculating the reading of the angle ruler when the head-to-body ratio is 1, we can know that:

[0054]

[0055] Right now:

[0056] Read the angle ruler reading α. When the reading of α is equal to 26°57′, the head-to-body ratio is 1, and the body length is equal to the head length. When it is less than 26°57′, the head-to-body ratio is greater than 1, and the body length is less than the head length. When it is greater than 26°57′, the body length is greater than the head length.

[0057] The above structure can be used to measure aquatic animals and can be applied to aquatic operations such as batch sampling and size classification of aquatic products.

[0058] For example, if we need to classify red swamp crayfish by size, we first provide a classification table for red swamp crayfish. By sampling and measuring multiple samples from a batch of red swamp crayfish, and classifying them based on the head-to-body ratio and measurement angle, we obtain the following classification table:

[0059] Reading α Body length / head length category ＞33°69′ ＞2 Four specifications ＞30°96′ ＞1.5 Three specifications ＞26°57′ ＞1 Second-tier specifications ＞18°43′ ＞0.5 Minimum Specification

[0060] Based on the classification in the table above, during subsequent measurements, the aquatic products can be directly identified as belonging to a specific category or size by measuring the angle.

[0061] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A device for measuring the body length of aquatic animals, comprising a worktable (1), characterized in that: The workbench (1) is provided with a scale (2), the scale (2) comprises a fixed arm (201) and a rotating arm (202); further comprising a light generating assembly, the light generating assembly comprises: A fixed light source is arranged on the fixed arm (201), A movable light source has horizontal and vertical adjustment capabilities, The light emitted by the fixed light source and the movable light source is staggered on the aquatic animal to be tested, and a measurable angle of light is formed on the workbench (1).

2. The apparatus of claim 1, wherein: The fixed light emitted by the fixed light source is arranged in line with the fixed arm (201).

3. The apparatus of claim 1, wherein: The relative height between the movable light source and the fixed light source is adjustable.

4. The apparatus of claim 3, wherein: The rotating arm (202) is provided with a rotating table (301), and the movable light source is installed on the rotating table (301), and the light emitted by the movable light source is turned through the same angle synchronously with the rotating table (301).

5. The apparatus of claim 4, wherein: The rotating table (301) itself is adjustable in height.

6. The apparatus of claim 3 wherein: An adjusting arm (401) is arranged on the side of the workbench (1), and the movable light source is arranged at the rotating end of the adjusting arm (401), and the light emitted by the movable light source is turned through the same angle as the adjusting arm (401) rotates.

7. The apparatus of claim 6, wherein: The adjusting arm (401) is provided with a plurality of adjusting arms (401), and a height difference is reserved between the plurality of adjusting arms (401).

8. The device of claim 1, wherein: A darkroom is configured, and the testing device is built in the darkroom.

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