CN111771803A - Living fish weight sorting machine and grading sorting method - Google Patents
Living fish weight sorting machine and grading sorting method Download PDFInfo
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- CN111771803A CN111771803A CN202010741419.8A CN202010741419A CN111771803A CN 111771803 A CN111771803 A CN 111771803A CN 202010741419 A CN202010741419 A CN 202010741419A CN 111771803 A CN111771803 A CN 111771803A
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000005303 weighing Methods 0.000 claims abstract description 81
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- 238000000926 separation method Methods 0.000 claims abstract description 50
- 230000007246 mechanism Effects 0.000 claims abstract description 44
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- 241000252073 Anguilliformes Species 0.000 description 1
- 229940035674 anesthetics Drugs 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000007599 discharging Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/90—Sorting, grading, counting or marking live aquatic animals, e.g. sex determination
- A01K61/95—Sorting, grading, counting or marking live aquatic animals, e.g. sex determination specially adapted for fish
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G17/00—Apparatus for or methods of weighing material of special form or property
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
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Abstract
The invention relates to the field of automatic processing of fishery products, in particular to a live fish weight sorting machine and a grading sorting method, which comprise a rack guide rail, a traction movement device, a sorting barrel, a sorting gate type mechanism and a movement weighing device, wherein the sorting barrel is arranged on the rack guide rail and moves along the rack guide rail under the action of the traction movement device, and the sorting gate type mechanism and the movement weighing device are both arranged on the rack guide rail; the method comprises the following steps that a motion weighing device obtains the weight of live fishes and a sorting barrel, and the actual weight of a weighed object is estimated through a dynamic weighing mathematical model; the bottom of the separation barrel is provided with a passive opening and closing bottom plate which is matched with the opening and closing of the separation door type mechanism to realize the passive opening and closing of the bottom of the separation barrel when moving to the separation door type mechanism. The invention can be suitable for sorting living fishes of different sizes, has the characteristics of nondestructive and continuous sorting, improves the efficiency and the accuracy of manual sorting and reduces the damage rate of the living fishes.
Description
Technical Field
The invention relates to the field of automatic processing of fishery products, in particular to a live fish weight sorting machine and a grading sorting method.
Background
Aquatic products are important agricultural and sideline products in China all the time, and especially mainly live fishes. Fresh and live fishes are rich in a large amount of nutrients such as protein, inorganic salt and the like, are more and more favored by consumers, and with the continuous expansion of aquatic product trade, the demand of living aquatic products is more and more great, and the weight sorting before transportation or processing is the conventional operation for treating the aquatic products. However, most of the existing fish grading and sorting are still in a manual operation stage, and the fishes are graded and sorted by means of the experience of workers and hand-eye measurement, so that the efficiency is low, the working intensity is high, and the sorting accuracy is low. In addition, in order to facilitate operation, improve the transportation survival rate of living aquatic products and reduce the damage rate, the activity of the anesthetized fishes is usually reduced in the sorting process, but the species and the dosage of the anesthetics for the fishes are unreasonably selected, so that the health of the living aquatic products is easily damaged, and the damage to human bodies is generated. The grading and sorting of living fishes is a link which is difficult to realize automatic continuous operation in fishery production.
In order to ensure the freshness and health of the fishes, in some sorting occasions where the activity reducing operation cannot be performed on the fishes, the manual grading sorting is difficult to implement, and the manual operation has the following disadvantages:
firstly, live fishes struggle in the sorting process, and the fishes are easily damaged in the manual operation process;
secondly, if the sorting is carried out by means of manual experience and hand-eye measurement, the accuracy is low;
thirdly, if the manual weighing mode is adopted for sorting, the efficiency is low and the workload is large;
and fourthly, manual operation is difficult to realize integration with subsequent links, and automation is difficult to realize.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a live fish weight sorting machine and a corresponding grading sorting method, the live fish weight sorting machine can be suitable for sorting live fishes of different sizes, has the characteristics of nondestructive and continuous sorting, can reduce the error of manual sorting, improve the efficiency of manual sorting, reduce the damage rate of the live fishes, and achieve the aims of nondestructive and efficient weight sorting of the live fishes.
The separator is realized by adopting the following technical scheme: a live fish weight sorting machine comprises a rack guide rail, a traction movement device, a sorting barrel, a sorting gate type mechanism and a movement weighing device, wherein the sorting barrel is arranged on the rack guide rail and moves along the rack guide rail under the action of the traction movement device;
when the sorting barrel moves to the position of the motion weighing device, the motion weighing device obtains the weight of the living fishes and the sorting barrel, and the actual weight of the weighed object is estimated through a dynamic weighing mathematical model;
the bottom of the separation barrel is provided with a passive opening and closing bottom plate which is matched with the opening and closing of the separation door type mechanism to realize the passive opening and closing of the bottom of the separation barrel when moving to the separation door type mechanism.
The grading and sorting method is based on the live fish weight sorting machine, a plurality of sorting barrels and sorting gate type organs are arranged, and the grading and sorting method comprises the following steps:
step a, manually drawing one of the separation barrels at a starting detection position, and driving all the separation barrels to do uniform-speed equidistant circular motion on a rack guide rail by a drawing motion device after starting;
b, putting live fishes to be sorted into a sorting barrel at a feeding station, driving the live fishes to move to a moving weighing device by the sorting barrel, and carrying out grading numbering on the sorting barrel after the moving weighing device obtains the actual weight of the live fishes to continue moving;
and c, opening the sorting gate type mechanism at the sorting gate type mechanism, passively opening the bottom of the sorting barrel under the gravity, enabling the living fishes to fall into the corresponding fish collecting barrel, continuously moving the sorting barrel forwards and automatically resetting and closing the sorting barrel, and then resetting and closing the corresponding sorting gate type mechanism to wait for next sorting.
The invention adopts a semi-automatic mode to realize the sorting of the live fishes according to weight fractions, manual baiting and continuous automatic grading sorting, is suitable for sorting the live fishes with different sizes, and has the following advantages and beneficial effects compared with the prior art:
1. according to the invention, the activity reduction operation of the fishes is not required, the freshness and health of the fishes are ensured, the sorting barrel has enough living fish activity space, secondary damage to the fishes is avoided, and the method has the characteristics of no damage and continuous sorting; is suitable for the separation occasions where fish activity needs to be maintained and the activity reduction operation cannot be carried out on the fish, and can carry out grading separation on live fishes according to weight
2. The movement weighing device adopts a dynamic weighing mathematical model to calculate the actual weight of the fish, is more accurate than manual weighing, and can reduce the error of manual sorting.
3. The invention adopts continuous automatic weighing and grading separation, reduces the labor intensity and improves the separation efficiency.
Drawings
FIG. 1 is a front view of a live fish weight sorter of the present invention;
FIG. 2 is a rear view of the live fish weight sorter of the present invention;
FIG. 3 is a top view of the live fish weight sorter of the present invention;
FIG. 4 is a schematic view showing the structure of a sorting barrel of the live fish weighing sorter of the present invention;
FIG. 5 is a schematic view of the structure of a sorting gate type organ of the live fish weight sorting machine of the present invention;
FIG. 6 is a schematic view of a sloped separation weighing rail on a rack guide rail of the live fish weight sorter of the present invention;
FIG. 7 is a drawing illustrating the connection of a single sorting bucket to the rack guide and the traction belt of the present invention.
In the figure: 1-fish collecting barrel, 2-sorting gate type organ, 3-sorting barrel, 4-frame guide rail, 4-1-constraint track, 4-2-rolling step, 4-3-first constraint plate, 4-4-second constraint plate, 5-control cabinet, 6-motion weighing device, 7-traction motion device, 7-1-driven wheel, 7-2-driving wheel, 8-sliding type traction mechanism, 9-rolling mechanism, 10-passive opening and closing bottom plate, 11-sorting door plate, 12-sorting door plate driving motor, 13-slope type separating and weighing track, 14-traction belt and 15-hollowed-out position.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, but the embodiments of the present invention are not limited thereto.
Examples
As shown in fig. 1 to 7, the live fish weight sorting machine of the present embodiment includes a rack guide rail 4, a traction movement device 7, a sorting barrel 3, a sorting gate type organ 2, a movement weighing device 6, and the like, wherein:
the sorting barrel 3 is provided with a plurality of sorting barrels which are all arranged on the rack guide rail and can move along the rack guide rail. The bottom of the separation barrel is provided with a passive opening and closing bottom plate 10 which can be passively opened and closed and is connected with the separation barrel body through a hinge.
The two sides of the sorting barrel are respectively provided with a rolling mechanism 9 which can restrict the movement of the sorting barrel on the guide rail of the frame. Correspondingly, the rack guide rail 4 is of a step structure, and the sorting barrel is constrained to move on the rack guide rail through a rolling mechanism; the rack guide rail comprises a constraint rail 4-1, rolling steps 4-2 positioned on two sides of the constraint rail, a first constraint plate 4-3 and a second constraint plate 4-4 which are respectively formed by upwards extending from the outer edges of the rolling steps on the two sides. The rolling mechanism comprises a mounting base and a plurality of ball bearings arranged on the mounting base. In the embodiment, each rolling mechanism is provided with four ball bearings, two of which are arranged on the side surface of the mounting base (the two ball bearings are arranged outwards) and contact with the first constraint plate 4-3 or the second constraint plate 4-4 to roll, so as to constrain the freedom degree of the left and right swinging of the sorting barrel; the other two ball bearings are arranged on the lower end surface of the mounting base (the two ball bearings are arranged downwards) and contact with the rolling steps to roll, so that a low-friction traction motion condition is provided.
A plurality of grading hollowed-out positions 15 are distributed on a constraint track of the rack guide rail at equal intervals and are used as grading stations (also called fish collecting stations); the sorting door type mechanism 2 is arranged on a hollow-out position and comprises a sorting door plate 11 and a sorting door plate driving motor 12. The number of hollow positions is related to the number of grades, and the present embodiment is graded by 5, so there are 5 graded hollow positions. The bottom passive form that can realize selecting separately the bucket opens and shuts in the opening and shutting of sorting gate type organ on the hierarchical fretwork position of cooperation: when the sorting barrel 3 moves on the rack guide rail, the passive opening and closing bottom plate at the bottom of the sorting barrel is closed; when the separation barrel moves to the separation gate type mechanism along the rack guide rail, if the separation gate type mechanism is opened, the passive opening and closing bottom plate is opened, and then the separation barrel is driven by the traction movement device 7 to pass through the hollow-out position and then the bottom of the separation barrel is automatically reset and closed due to the bottom constraint of the rack guide rail. When the sorting gate type machine is closed, the upper surface of the sorting gate type machine is superposed with the moving lower surface of the sorting barrel on the rack guide rail, so that the live fishes and the sorting barrel simultaneously move on the constraint track of the rack guide rail; when the sorting door type mechanism is opened, the sorting barrel bottom is no longer supported by the grading hollow position, so that the sorting barrel bottom is opened passively under gravity, fishes fall into the fish collecting barrel 1, and sorting according to weight is realized.
The restraining track of the rack guide rail is also provided with a slope type separation weighing track 13 as a weighing station, the slope type separation weighing track is provided with a motion weighing device 6, the height of the steps at the two sides of the slope type separation weighing track is lower than that of the rolling step 4-2 of the rack guide rail, and the slope type separation weighing track is connected with the rolling steps of the rack guide rail through an inclined connecting section. The movement weighing device is an electronic scale capable of continuously and dynamically acquiring the weight of the object to be weighed, the upper surface of the movement weighing device and the constraint track of the rack guide rail are in the same plane (namely, the track surface and the weighing surface are coplanar), as shown in fig. 6, but the movement weighing device is not actually connected with the constraint track of the rack guide rail, and a gap is formed between the edge of the movement weighing device and the constraint track of the rack guide rail; in the process that the sorting barrel separates the track through weighing, the live fishes and the sorting barrel simultaneously exert pressure on the movement weighing device to realize dynamic weight acquisition, and the actual weight of the weighed object is estimated through a dynamic weighing mathematical model.
The dynamic weighing mathematical model is an empirical model fitted according to experimental data, namely the actual weight of the living fish is estimated according to a weighing dynamic curve. The weighing process of the live fishes is completed in motion, so that vibration noise exists, and the weighing dynamic curve is related to the weight of the objects and the motion speed of the sorting barrel. According to the embodiment, weighing curves under different motion speeds and different object weights are obtained through experiments, the weighing curves are subjected to filtering smoothing processing, peak values are extracted, and an equation of a dynamic weighing mathematical model is fitted according to the motion speeds, the actual weights and the peak values. And during subsequent weighing, obtaining a real-time weighing curve according to the movement speed of the traction belt and the weight obtained by the electronic scale, processing the real-time weighing curve to obtain a peak value, and substituting the movement speed of the traction belt and the obtained peak value into the fitted dynamic weighing mathematical model, so as to obtain an estimated value which is very close to the actual weight and is used as the weight of the living fish.
In general, the movement of the sorting buckets on the rack rails includes a conventional draft movement and a weigh separation track process. The conventional traction movement is that the traction movement device 7 drives the separation barrel to do uniform-speed equidistant looping movement on the rack track. The process of weighing and separating the rails is carried out on a weighing station through a slope type separating and weighing rail 13, and is particularly realized through a sliding type traction mechanism 8 arranged on the sorting barrel. If meeting slope formula separation weighing track 13 in the conventional traction motion process of sorting barrel, sorting barrel can realize up-and-down motion, and slope formula separation weighing track makes sorting barrel's overdraft and frame guide rail track separation, no longer applies to the frame guide rail, but applies on motion weighing device 6 to realize the motion of traction process and weigh under the condition that does not influence the process of pulling and advancing. During the normal traction movement of the sorting bucket, one end of the sliding type traction mechanism always passes over the first restraint plate and is connected with the traction belt 14.
The sorting barrel realizes uniform-speed (0.5m/s) equidistant circular motion on a rack guide rail through a traction motion device. The equidistance of sorting barrel is put and is related to the number of sorting barrel, and this embodiment adopts 9 sorting barrels, and then the distance between the sorting barrel is about 525 mm. The traction movement device comprises a traction motor, four transmission wheels and a traction belt 14, wherein at least one of the four transmission wheels is used for being fixedly connected with the traction motor to provide a driving wheel 7-2 of power, and the rest of the four transmission wheels are used as driven wheels 7-1; the four driving wheels are connected through a traction belt and are arc synchronous wheels with 5m-100 teeth. The driving wheel is driven by a three-phase 220V and 400w alternating current asynchronous speed reducing motor, the rotating speed after speed reduction is 30r/min, and the driven wheel is connected to the shaft through a bearing. The traction belt is 27mm in width, and the traction belt is fixedly connected with one end of the sliding type traction mechanism 8 on the separation barrel through a screw to provide traction power for the separation barrels, so that the separation barrels are constrained on the rack guide rail at equal intervals and at constant speed to do constant-speed equidistant looping motion. The other end of the sliding type traction mechanism 8 on the separation barrel is sleeved on a sliding rail fixed on the outer side of the separation barrel, if the other end of the sliding type traction mechanism meets a slope type separation weighing rail 13 in the traction movement process of the separation barrel, the other end of the sliding type traction mechanism can slide up and down along the outer side of the separation barrel, so that the downward pressure of the separation barrel is separated from a rack guide rail, and the traction advancing process is not influenced, as shown in fig. 3 and 4.
The control cabinet 5 is provided with a main control board, a frequency converter, a motor driver, a direct current power supply and other components related to the control circuit of the invention. The main control board adopts a 32-bit singlechip stm32F407, the singlechip is respectively connected with an electronic scale (namely a motion weighing device) and a frequency converter through an RS485 bus to obtain dynamic weighing data of the electronic scale, and the traction speed of the traction motion device is controlled and adjusted through the frequency converter; the main control board controls the opening and closing of the sorting door type mechanism through a motor driver. A driving motor for driving a sorting gate type mechanism adopts a waterproof industrial steering engine and 24V direct current driving voltage.
In the embodiment, the separation barrel is made of stainless steel materials, the thickness is 0.3mm, different sizes can be set according to the size of fish, and the separation of live eels in the embodiment adopts the outer diameter of 200mm multiplied by 200 mm; the rack guide rail 4 is made of stainless steel sheet metal, and has an outer diameter of 2600mm multiplied by 1500mm and a height of 1000 mm.
The grading and sorting method is realized by adopting the live fish weight sorting machine, and comprises the following steps:
step a, manually drawing one of the sorting barrels at a starting detection position in a shutdown state, starting a power supply, and driving all the sorting barrels to do uniform-speed equidistant circular motion on a rack guide rail by a drawing motion device of the sorting machine; in this embodiment, 9 sorting barrels are numbered 1# to 9# respectively, and the 1# sorting barrel is manually pulled at the start-up detection position.
B, manually putting the living fishes to be sorted into a sorting barrel at a discharging station; the sorting barrel drives the live fishes to move to a slope type separating and weighing track on the weighing station, and the sorting barrel is subjected to a weighing and separating track process; in the process, whether the sorting barrel falls into a weighing effective range of an electronic scale (namely a moving weighing device) is detected through laser correlation type switch sensors arranged on two sides of a rack guide rail, when the sensors detect that the sorting barrel is in the weighing effective range, a single chip microcomputer of a main control board starts to inquire real-time data of the electronic scale through a Modbus protocol, the actual weight of a weighed object is calculated through a dynamic weighing mathematical model, the sorting barrel is subjected to grading numbering (1-5) after the actual weight of live fishes is obtained, the grading numbering is associated with the sorting barrel numbering (1-9 #), and other sorting barrels continue to move on the rack guide rail.
And c, continuously moving the sorting barrel (1-5) after grading numbering, opening the sorting gate type mechanism when the sorting barrel moves to a corresponding grading station, passively opening the bottom of the sorting barrel under the gravity, enabling the living fishes to fall into the corresponding fish receiving barrel, continuously moving the sorting barrel forwards, automatically resetting and closing the sorting barrel, resetting and closing the corresponding sorting gate type mechanism, and waiting for next sorting.
That is, after live fishes are placed in the baiting station, the sorting barrel drives the live fishes to move to the weighing station, and the live fishes continue to move after acquiring net weight of the fishes through the moving weighing device; when the sorting barrel moves to the fish collecting station with the corresponding weight grade, the sorting gate type mechanism is opened, fishes fall into the fish collecting barrel, the sorting barrel continues to move forwards, and the sorting gate type mechanism resets to wait for next sorting.
According to the grading and sorting method, the blanking station continuously and uninterruptedly performs blanking, the weighing station continuously performs weighing and grading numbering, and continuous grading and sorting can be realized. The grading and sorting efficiency is related to the number of the sorting barrels and the traction speed, and within the allowable range of the design size, the sorting efficiency is higher when the number of the sorting barrels is larger; the higher the pulling speed, the higher the sorting efficiency.
The above examples are merely illustrative for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A live fish weight sorting machine is characterized by comprising a rack guide rail, a traction movement device, a sorting barrel, a sorting gate type mechanism and a movement weighing device, wherein the sorting barrel is arranged on the rack guide rail and moves along the rack guide rail under the action of the traction movement device;
when the sorting barrel moves to the position of the motion weighing device, the motion weighing device obtains the weight of the living fishes and the sorting barrel, and the actual weight of the weighed object is estimated through a dynamic weighing mathematical model;
the bottom of the separation barrel is provided with a passive opening and closing bottom plate which is matched with the opening and closing of the separation door type mechanism to realize the passive opening and closing of the bottom of the separation barrel when moving to the separation door type mechanism.
2. The live fish weight sorter of claim 1 wherein rolling mechanisms are provided on both sides of the sorting barrel for constraining movement of the sorting barrel on the rack rails.
3. The live fish weight sorter of claim 2 wherein the rack rail includes a restraint rail, rolling steps on both sides of the restraint rail, and first and second restraint plates extending upward from outer edges of the rolling steps on both sides, respectively; at least two ball bearings are respectively arranged on two sides of the rolling mechanism, one of the ball bearings is connected with the rolling step in a contact mode downwards and used for providing a friction rolling condition, and the other ball bearing is connected with the first constraint plate or the second constraint plate in a contact mode and used for constraining the left-right swinging freedom degree of the sorting barrel.
4. The live fish weight sorter of claim 1 wherein the rack rail includes a restraint rail, rolling steps on both sides of the restraint rail, and first and second restraint plates extending upward from outer edges of the rolling steps on both sides, respectively; a slope type separation weighing track is arranged on the rolling step, and the motion weighing device is arranged on the slope type separation weighing track.
5. The live fish weight sorter of claim 1 wherein the rack rails are provided with staging cut-outs; the sorting door type mechanism is arranged on the hollow-out position and comprises a sorting door plate and a sorting door plate driving motor.
6. The live fish weight sorter of claim 4, wherein the traction movement device comprises a traction motor, a traction belt, a driving wheel and a driven wheel, the driving wheel is fixedly connected with the traction motor, and the driving wheel is connected with the driven wheel through the traction belt.
7. The live fish weight sorter of claim 6 wherein the sorting barrel is provided with a sliding type traction mechanism, one end of the sliding type traction mechanism is fixedly connected with a traction belt, and the other end is sleeved on a slide rail fixed on the outer side of the sorting barrel.
8. The live fish weight sorting machine according to claim 1, wherein the sorting machine further comprises a control cabinet, a main control board, a frequency converter and a motor driver are arranged on the control cabinet, the main control board is respectively connected with the motion weighing device, the frequency converter and the motor driver, the motion weighing device obtains dynamic weighing data of the live fish and the sorting barrel, and the frequency converter controls and adjusts the traction speed of the traction motion device; the main control board controls the opening and closing of the sorting door type mechanism through a motor driver.
9. The sorting method of live fish weight sorting machine according to claim 1, wherein a plurality of sorting buckets and sorting gate type organs are provided, and the sorting method comprises the steps of:
step a, manually drawing one of the separation barrels at a starting detection position, and driving all the separation barrels to do uniform-speed equidistant circular motion on a rack guide rail by a drawing motion device after starting;
b, putting live fishes to be sorted into a sorting barrel at a feeding station, driving the live fishes to move to a moving weighing device by the sorting barrel, and carrying out grading numbering on the sorting barrel after the moving weighing device obtains the actual weight of the live fishes to continue moving;
and c, opening the sorting gate type mechanism at the sorting gate type mechanism, passively opening the bottom of the sorting barrel under the gravity, enabling the living fishes to fall into the corresponding fish collecting barrel, continuously moving the sorting barrel forwards and automatically resetting and closing the sorting barrel, and then resetting and closing the corresponding sorting gate type mechanism to wait for next sorting.
10. The classification and sorting method according to claim 9, wherein the dynamic weighing mathematical model is an empirical model fitted according to experimental data, weighing dynamic curves at different moving speeds and different object weights are obtained through experiments, the weighing dynamic curves are subjected to filtering smoothing, then peak values are extracted, and then the dynamic weighing mathematical model is fitted according to the moving speed, the actual weight and the peak values.
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| CN202010741419.8A CN111771803B (en) | 2020-07-29 | 2020-07-29 | Living fish weight sorting machine and grading sorting method |
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| CN202010741419.8A CN111771803B (en) | 2020-07-29 | 2020-07-29 | Living fish weight sorting machine and grading sorting method |
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