A hyperspectral-based detection platform for hepatopancreas index of eriocheir sinensis

Abstract

The utility model discloses a kind of river crab hepatopancreas index detection method and system based on hyperspectral, belong to aquatic product quality detection technical field. Including: hyperspectral camera, adjustable support, halogen lamp, movable check weigher, control unit, front end conveyor belt, rear end conveyor belt, platform bottom plate and slide rail;Adjustable support is fixed on platform bottom plate, hyperspectral camera and two halogen lamps are carried on adjustable support, two halogen lamps are respectively at the two sides of hyperspectral camera;Front end conveyor belt and rear end conveyor belt are fixed on bottom plate, and in the left and right sides of adjustable support, the middle fixed by slide rail;Movable check weigher is placed on slide rail, and can be moved back and forth along slide rail between front end conveyor belt and rear end conveyor belt;Hyperspectral camera and movable check weigher are connected with control unit by data line. The utility model can realize the collection of river crab hyperspectral data and weight under production line environment.

Description

Technical Field

[0001] This utility model relates to the field of aquatic product quality testing technology, and in particular to a hyperspectral-based platform for detecting the hepatopancreas index of crabs. Background Technology

[0002] As an important aquatic product, the increasing market demand for river crabs has led to a growing need for high-quality sorting. However, the current river crab industry suffers from low levels of automation and intelligence. The quality assessment of live river crabs primarily relies on external morphological parameters, as the physiological characteristics inside the shell cannot be obtained quickly and non-destructively. This results in insufficient screening capabilities and difficulty in achieving precise grading. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention combines a hyperspectral instrument with a portable checkweigher, enabling hyperspectral data monitoring and weight measurement of river crabs.

[0004] A hyperspectral-based platform for detecting the hepatopancreas index of crabs, characterized in that it comprises: a hyperspectral camera, an adjustable bracket, a halogen lamp, a movable checkweigher, a control unit, a front-end conveyor belt, a rear-end conveyor belt, a platform base plate, and a slide rail. The adjustable bracket is fixed to the platform base plate. The hyperspectral camera and two halogen lamps are mounted on the adjustable bracket, with the two halogen lamps on either side of the hyperspectral camera. The front and rear conveyor belts are fixed to the platform base plate and on the left and right sides of the adjustable bracket, with a slide rail fixed in between. The movable checkweigher is placed on the slide rail and can move back and forth between the front and rear conveyor belts along the slide rail. The hyperspectral camera and the movable checkweigher are connected to the control unit via a data cable.

[0005] Furthermore, the hyperspectral camera has a spectral scanning band of 400~1000 nm, an exposure time of 30 ms, an aperture of f 2.8, and a vertical distance of 30 cm between the lens and the movable checkweigher.

[0006] Furthermore, the sliding rail moves at a speed of 10 mm / s.

[0007] Furthermore, the movable checkweigher includes: a laser sensor, two longitudinal baffles, a conveyor belt, a weight sensor, two cylinders, a front transverse baffle, a reflector, and a rear transverse baffle; the weight sensor is located below the conveyor belt, and the conveyor belt, the front conveyor belt, and the rear conveyor belt are on the same horizontal line; the two longitudinal baffles are fixed on two parallel sides of the conveyor belt, parallel to the conveyor belt's transport direction, one longitudinal baffle is equipped with a laser sensor, and the corresponding position of the other longitudinal baffle is equipped with a reflector; the front transverse baffle and the rear transverse baffle are placed on two vertical sides of the conveyor belt, perpendicular to the transport direction, with the front transverse baffle closer to the front conveyor belt and the rear transverse baffle closer to the rear conveyor belt; the front transverse baffle and the rear transverse baffle are respectively connected to two cylinders, and the two cylinders are mounted on one side of the conveyor belt; the two cylinders can respectively control the front transverse baffle and the rear transverse baffle to be placed on the conveyor belt, forming a closed space with the two longitudinal baffles, or away from the conveyor belt, facilitating the entry or exit of the checkweigher from the conveyor belt.

[0008] Furthermore, the area enclosed by the two longitudinal baffles, the rear transverse baffle, and the front transverse baffle is 50*50 cm; all components of the movable checkweigher are black.

[0009] The beneficial effects of this utility model are: This utility model platform acquires internal information of river crabs through a hyperspectral analyzer and, combined with a mobile checkweigher, enables automatic monitoring of hyperspectral data and weight of river crabs in a production line environment. It can be used to select high-quality river crabs and remove inferior or underdeveloped ones, thereby improving the production efficiency and economic benefits of river crab production bases. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the crab liver and pancreas index detection platform according to an embodiment of this utility model.

[0011] Figure 2 This is a schematic diagram of the movable checkweigher structure according to an embodiment of the present invention. Detailed Implementation The present invention will be further explained below with reference to the accompanying drawings and embodiments.

[0012] like Figure 1 As shown, this utility model provides a hyperspectral-based platform for detecting the hepatopancreas index of crabs, including: a hyperspectral camera 1, an adjustable bracket 2, a halogen lamp 3, a movable checkweigher 4, a control unit 5, a front conveyor belt 6, a rear conveyor belt 7, a platform base plate 8, and a slide rail 9.

[0013] The adjustable bracket 2 is fixed on the platform base plate 8. The hyperspectral camera 1 and two halogen lamps 3 are mounted on the adjustable bracket 2, with the two halogen lamps 3 on both sides of the hyperspectral camera 1. The front conveyor belt 6 and the rear conveyor belt 7 are fixed on the platform base plate 8 and on the left and right sides of the adjustable bracket 2, with a slide rail 9 fixed in the middle. The movable checkweigher 4 is placed on the slide rail 9 and can move back and forth between the front conveyor belt 6 and the rear conveyor belt 7 along the slide rail 9. The hyperspectral camera 1 and the movable checkweigher 4 are connected to the control unit 5 via a data cable.

[0014] The hyperspectral camera 1 operates in the spectral scanning band of 400–1000 nm, using the perClass Mira software and accompanying instruments on a computer. Before sample collection, a scan is performed on a white plastic sheet, with the lens covered, to obtain pure white and pure black samples for calibration. After cleaning the background plate used for scanning, scanning begins on the plate to obtain hyperspectral data. The movement speed of the slide rail 9 is set to 10 mm / s, and the distance between the lens of the hyperspectral camera 1 and the movable checkweigher 4 is 30 cm. The exposure time of the hyperspectral camera 1 is set to 30 ms, the aperture to f / 2.8, and other parameters are set to initial values.

[0015] like Figure 2 As shown, the movable checkweigher 4 includes: a laser sensor 4-1, two longitudinal baffles 4-2, a conveyor belt 4-3, a weight sensor 4-4, two cylinders 4-5, a front transverse baffle 4-6, a reflector 4-7, and a rear transverse baffle 4-8.

[0016] Weight sensor 4-4 is located below conveyor belt 4-3, which is on the same horizontal line as the front conveyor belt 6 and the rear conveyor belt 7. Two longitudinal baffles 4-2 are fixed on the parallel side of conveyor belt 4-3, parallel to the transport direction of conveyor belt 4-3. One longitudinal baffle 4-2 is equipped with a laser sensor 4-1, and the corresponding position of the other longitudinal baffle 4-2 is equipped with a reflector 4-7. The front transverse baffle 4-6 and the rear transverse baffle 4-8 are placed on the vertical side of conveyor belt 4-3, perpendicular to the transport direction. -6 is located on the side near the front conveyor belt 6, and the rear transverse baffle 4-8 is located on the side near the rear conveyor belt 7; the front transverse baffle 4-6 and the rear transverse baffle 4-8 are respectively connected to two cylinders 4-5, and the two cylinders 4-5 are mounted on one side of the reflector 4-7 of the conveyor belt 4-3 device; the two cylinders 4-5 can respectively control the front transverse baffle 4-6 and the rear transverse baffle 4-8 to be placed on the conveyor belt 4-3, forming a closed space with the two longitudinal baffles 4-2, or away from the conveyor belt 4-3, so that the crab can enter or leave the conveyor belt 4-3.

[0017] The area enclosed by the two longitudinal baffles 4-2, the front transverse baffle 4-6, and the rear transverse baffle 4-8 is 50*50cm; all components of the movable checkweigher 4 are black.

[0018] The working principle of this testing platform is as follows: The front conveyor belt 6, the movable checkweigher 4, and the rear conveyor belt 7 are responsible for transporting the crabs. The crabs are placed on the front conveyor belt 6 in a crawling position with their carapace facing upwards. The crabs then enter the movable checkweigher 4's conveyor belt 4-3. The weight sensor 4-4 senses and records the crab's weight. At this point, the front transverse baffle 4-6 is outside the conveyor belt 4-3, and the rear transverse baffle 4-8 is on the conveyor belt 4-3. The conveyor belt 4-3 starts working, fine-tuning the crab's position. The crab is transported until it is blocked by the rear transverse baffle 4-8, triggering the laser sensor 4-1. Then, the front transverse baffle 4-6 is pushed onto the conveyor belt 4-3 by the cylinder 4-5 until it approaches the longitudinal baffle on the side where the laser sensor 4-1 is located, leaving a gap of 2-3 cm, thus fixing the crab's position. The movable checkweigher 4 then begins to move, and the hyperspectral camera 1 begins scanning the crab. The hyperspectral camera stops scanning after the crab moves to the rear conveyor belt 7. The rear transverse baffle 4-8 is pushed out, and the conveyor belt 4-3 starts working to transport the crabs to the rear conveyor belt 7 for subsequent processing steps. The movable checkweigher 4 moves back to the front conveyor belt 6 to wait for the next transport and measurement of crabs.

[0019] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, and improvements made within the spirit and scope of this application are included within the scope of protection of this application.

Claims

1. A hyperspectral-based platform for detecting the hepatopancreatic index of crabs, characterized in that, include: Hyperspectral camera (1), adjustable bracket (2), halogen lamp (3), movable checkweigher (4), control unit (5), front conveyor belt (6), rear conveyor belt (7), platform base plate (8) and slide rail (9); The adjustable bracket (2) is fixed on the platform base plate (8). The hyperspectral camera (1) and two halogen lamps (3) are mounted on the adjustable bracket (2). The two halogen lamps (3) are respectively on both sides of the hyperspectral camera (1). The front conveyor belt (6) and the rear conveyor belt (7) are fixed on the platform base plate (8) and on the left and right sides of the adjustable bracket (2), with a slide rail (9) fixed in the middle. The movable checkweigher (4) is placed on the slide rail (9) and can move back and forth between the front conveyor belt (6) and the rear conveyor belt (7) along the slide rail (9). The hyperspectral camera (1) and the movable checkweigher (4) are connected to the control unit (5) through a data cable.

2. The hyperspectral-based hepatopancreatic index detection platform for crabs according to claim 1, characterized in that: The hyperspectral camera (1) has a spectral scanning band of 400~1000 nm, an exposure time of 30 ms, an aperture of f 2.8, and a vertical distance of 30 cm between the lens and the movable checkweigher (4).

3. The hyperspectral-based hepatopancreatic index detection platform for crabs according to claim 1, characterized in that: The movement speed of the slide rail (9) is 10 mm / s.

4. The hyperspectral-based hepatopancreatic index detection platform for crabs according to claim 1, characterized in that, The movable checkweigher (4) includes: a laser sensor (4-1), two longitudinal baffles (4-2), a conveyor belt (4-3), a weight sensor (4-4), two cylinders (4-5), a front transverse baffle (4-6), a reflector (4-7), and a rear transverse baffle (4-8); the weight sensor (4-4) is located below the conveyor belt (4-3), and the conveyor belt (4-3), the front conveyor belt (6), and the rear conveyor belt (7) are on the same horizontal line; the two longitudinal baffles (4-2) are fixed on two parallel sides of the conveyor belt (4-3) and are parallel to the transport direction of the conveyor belt (4-3), one of the longitudinal baffles (4-2) is equipped with a laser sensor (4-1), and the corresponding position of the other longitudinal baffle (4-2) is equipped with a reflector (4-7); The front transverse baffle (4-6) and the rear transverse baffle (4-8) are placed on two vertical sides of the conveyor belt (4-3), perpendicular to the transport direction. The front transverse baffle (4-6) is on the side closer to the front conveyor belt (6), and the rear transverse baffle (4-8) is on the side closer to the rear conveyor belt (7). The front transverse baffle (4-6) and the rear transverse baffle (4-8) are respectively connected to two cylinders (4-5), which are mounted on one side of the conveyor belt (4-3). The two cylinders (4-5) can respectively control the front transverse baffle (4-6) and the rear transverse baffle (4-8) to be placed on the conveyor belt (4-3), forming a closed space with the two longitudinal baffles (4-2), or away from the conveyor belt (4-3), so that the crab can enter or leave the conveyor belt (4-3).

5. The hyperspectral-based hepatopancreatic index detection platform for crabs according to claim 4, characterized in that: The area enclosed by the two longitudinal baffles (4-2), the rear transverse baffle (4-8), and the front transverse baffle (4-6) is 50*50 cm; all components of the movable checkweigher (4) are black.

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