SU1009362A1 - Device for registering fishes in water flow - Google Patents

Abstract

1. A DEVICE FOR ACCOUNTING FISH IN A WATER FLOW, mainly juveniles, containing a chamber with accounting channels for the passage of fish, sensors for recording fish, located on the outlet sections of the channels, and ichthiomass separators mounted in the chamber, characterized in that, in order to increase speed and reliability of metering, the chamber is closed and has a rectangular, ichthyomass separators are installed along the longitudinal axis of the chamber in two rows, with the length of the dividers and the distance between their rows equal to 1/3 of the chamber length, and datta ted so that their field of sensitivity overlapping the flow of water with fish accounted vertically. Q (B (L with so a and ca

Description

2. The device according to claim 1, wherein the ratio of the width of the accounting channels to their height is preferably 2: 1.

3. The device according to claim 1, which differs from the fact that the camera is divided into Rus, with fairings installed between the ruses.

, The invention relates to the fishing industry, namely to the means of piecemeal accounting of fish, the advantage but the young in the factory of its fish. A device for recording fish contains a diene separator with Kpyiv, openings for fish passage, a common illuminator mounted in the center of the disk, photosensors, radial channels, pulse formers, a commutator and an electronic pulse counter C11. The device works as follows. The light from the illuminator through the radial channels connecting the illuminator with each photosensor, penetrated the photosensor through the opening for the passage of fish. If there is a fish in the hole, then the photo sensor, and a pulse is formed at the input of the counter. A disadvantage of the known device is that it does not reliably account for the mass of fish swimming downstream at high speed. The closest to that proposed by its technical essence is a fish metering device, containing a neck chamber with metering channels for fish passage, sensors for metering fish located on the exit sections of the channels, and ichthy mass 2, I mounted in the radar chamber. A disadvantage of the known device is that the separator is multi-layered and its partitions are angled to the flow, which leads to unfavorable hydraulics of the metering chamber, namely, to the gradual restriction of the flow to the formation of stagnant and turbulent zones in which the fish can hold and accumulate. . Another disadvantage is the open execution of the metering chamber, as a result, to ensure the passage of fish in the zone of sensors in one layer, it is necessary to maintain a very rigid water level in the chamber, as well as to arrange them so that the field of action is perpendicular to the movement of fish in the horizontal plane. This leads to the need to make the counting channels narrow enough to eliminate the possibility of simultaneous passage of several (for example, two) fish, and in such narrow channels there is a danger of fish getting stuck. A disadvantage of the known construction is also the principle of separating the mass of fish for a single counting based on purely mechanical separation of the water flow by means of 5 step 10 (crushing it, which, if there is a free surface of water in the chamber, creates a difficult-to-control hydraulic mode. And because and turbulent zones are not provided throughout the chamber with the flow velocities that are carried away, then the operation of such a device will ambiguously depend on the behavioral characteristics of the fish counted. This device is designed to increase the speed and reliability of the metering. The goal is achieved by the fact that in the fish metering device, containing a chamber with metering channels for fish passage, sensors for fish counting, located on the output sections of the channels mounted in the ichthyomass separators, according to the invention, the chamber is full closed and has a rectangular shape, the ichthyomass separator is installed along the longitudinal axis of the chamber in two rows, spacers on the distance between their rows is chosen to be 1/3 of the length of the chamber, and the sensors smont po

so that their sexes HyBCTBsrrenbHocTH cut off the flow of water from the fish being recorded vertically, moreover, the ratio of the width of the accounting channels to their height is mainly 2: 1, a. the registration camera is installed on the Rus, while there are fairings installed on the entrance side between the Rus.,

FIG. 1 schematically shows the proposed device; on fkg. 2 section of the camera in the plan; in fig. 3 is a block diagram of the device.

The device for metering fish in the water flow (Fig. 3) consists of a chamber 1 with separators 2 ichthyomass, formed by counting accounting channels with input section 3 and output 4, sensors 5 for accounting fish located at output sections 4 accounting channels, threshold elements 6, the distributor 7, the electronic pulse counter 8, the flap 9, the pipeline 10.

Chamber 1 is made in the form of a closed rectangular gutter. The ichthyoma Sss separators 2 installed in the chamber 1 are vertical partitions installed along the longitudinal axis of the chamber 1 in two raids, with their length and the distance between the rows being equal to 1/3 of the length. ry 1.

The 2 ichthyomass separators installed in the outlet section 4 are shifted relative to the separators installed in the inlet section 3 by half the width of the channel for the passage of fish formed by them,

In the recording channels two are installed, for example, optical sensors 5. The sensors are connected to the corresponding threshold elements 6, which, in their own, are connected to the distributor 7 and the electronic pulse counter 8. To account for the young of different species and different size-age groups, the accounting camera can -to be you-; Replaceable with appropriate sizes.

In order to skip a sufficiently large flow of water, which ensures an unobtainable flow rate through the chamber, it can be performed by two or many months, while, as indicated above, fairings 9 are installed between the rivers, eliminating the pressure of the fish (Fig. 1).

The operation of the device occurs with & blowing image.

Young fish along with potoks l water is fed to the entrance of chamber 1 by

5 is closed on line 1 to line 10. The flow rate is chosen somewhat higher than the critical swimming speed of the fish to be counted. Taken by the stream, the young go through the chamber 1 tail forward. Behind

10 due to the relatively small height of the canals, only 2-3 times larger than the max: the maximum transverse fish occurs, the fish are divided vertically. Thanks to I, however, the account width is sufficiently large, fish free (not jammed) passes camera 1. In the accounting channels that provide good sepa1} and the fish horizontally, the model of fish crosses the floor at high speed

20 sensitivities of the sensors 5, which, via the threshold elements 6, form signals that feed through the distribution 7 to the input of the electronic counter 8.

To ensure effective operation of the device, the channels should be somewhat smaller than the length of the fish body, and the height of the channels should not be more than 2-3 times the height of the fish body. In the proposed device, the ratio of the width of the channels to their height is 2: 1, and the ratio of the length of the sides of the Through passage of the channels (i.e., the dimensions with the separator section on the output section 4) is 1: 1.

The application of the proposed device at fish farms allowed: to reduce labor costs by keeping stock of young fishes, to eliminate a heavy, inefficient manual account 7 to increase soon the account to 3,000 thousand units, to more objectively evaluate the work of the grown-up households by stocking ponds, to avoid traumatizing fish with the score. The expected economic effect created only by reducing the counting error to 10% with an annual production of 1.8 million trout fingerlings at the plant will amount to 9 thousand rubles. on one device. With the introduction of 25 devices on the planned (Sche; maraevi of commodity trout breeding, for 1985-1990) 25 fish hatcheries the annual economic effect will be 225 thousand rubles.

FIG. 2

eight

Claims (3)

1. DEVICE FOR METERING FISH IN A WATER FLOW, mainly juveniles, containing a camera with metering channels for fish passage, fish metering sensors located at the outlet sections of the channels, and ichthyomass separators mounted in the camera, characterized in that, in order to increase the speed and reliability of accounting, the camera is closed and has a rectangular shape, the ichthyomass dividers are installed along two longitudinal axis of the camera, the length of the separators and the distance between their rows being chosen equal to 1/3 of the camera length, and the mount sensors ovany so that their field of sensitivity overlapping the flow of water with fish accounted vertically. from 10063622. The device according to π. 1, with the fact that the ratio of the width of the accounting channels to us height is mainly 2: 1. 3. The device according to π. 1, due to the fact that the camera is divided into tiers, while fairings are installed between the tiers from the entrance side.