SU1618364A1 - Device for measuring horizontal opening of fishing trawl - Google Patents

Abstract

This invention relates to industrial fisheries, namely, trawl parameter monitoring devices. The purpose of the invention is to simplify the device and increase the reliability of its operation. In the device, including a trawling probe, a horizontal opening sensor, an echo sounder transceiver system and a measuring module, an echo sounder transceiver system is installed directly at the trawling probe unit in the middle of the upper trawl pickup, the horizontal opening sensor is designed as an acoustic transponder (or acoustic reflector), fixed on one of the wings of the trawl, and the measuring module is equipped with an arithmetic unit. 2 Il.

Description

This invention relates to industrial fisheries, namely, trawl parameter monitoring devices.

The aim of the invention is to simplify the device and increase the reliability of its operation.

In a device for measuring the horizontal opening of a trawl, including a trawl probe with an echo sounder transceiver system, a horizontal opening sensor and a measuring module, an echo sounder transceiver system is installed directly at the trawl probe in the middle of the upper trawl pickup, the horizontal opening sensor is designed as an acoustic transponder ( acoustic reflector) installed on one of the wings of the trawl, and the measurement module is supplemented with an arithmetic unit.

FIG. 1 shows the device with the placement of its elements on the trawl, general view; in fig. 2 is a block diagram of the device.

A device for measuring the horizontal opening of the trawl contains a trawl probe 1 with an echo sounder transceiver system 2, mounted in the middle of the upper selection of the trawl, an acoustic transponder 3 (acoustic reflector) installed in the middle of one of the wings of the trawl, counter 4 of the opening, generator 5 counting pulses, block 6 synchronization and arithmetic unit 7.

The trawl probe I is connected to the echo sounder transceiver system 2 and the synchronization side 6, the outputs of which are connected to the echo sounder transceiver system 2 and the counting enable input of the opening counter 4. The synchronization unit 6 serves to start the echo sounder transceiver system and to form a pulse of the start of the counting of the opening counter 4.

Open counter 4, the counter input of which is connected to the generator output 5 of the counting pulses, the count resolution input to the output of the synchronization unit 6, the counting input and the permission to read the data in the arithmetic unit 7 to the output of the echo sounder transceiver system 2, and the readout and termination outputs reading - to the arithmetic unit 7, serves

oh

oo

with

SE 4

for pulse counting, i.e. obtain vertical trawl disclosure data and information necessary to determine horizontal trawl disclosure.

The transponder 3 is designed to receive a transmission pulse of the transceiver system 2 and emit a reverse pulse. Generator 5, the output of which is connected to opening counter 4, is designed to generate pulses of a given tracking frequency and amplitude. An arithmetic unit 7, the inputs of which are connected to the reading and termination outputs of the opening counter 4, serves to perform the arithmetic operation of calculating the horizontal opening Ng from the distance between the echo sounder transceiver system 2 and the 3 + 1 transponder and the vertical opening To (fig. one).

The device works as follows.

After the trawl is submerged to a certain depth, the trawl probe 1 begins to measure the vertical opening of the trawl Hg (Fig. 1), with this sending "down the trawl probe" arrives at the synchronization unit 6, which provides the passage of counting pulses from the generator 5 to the counter 4, it is opened the operation of determining the value of HJ. At the end of the vertical disclosure measurement, the data from the disclosure counter 4 is read into the arithmetic unit 7 and the operation of calculating H begins. After the synchronization unit 6 reads the synchronization unit 6, a trigger pulse is generated for the echo sounder transceiver system 2, which emits a "Horizontal. At the same time, a new counter 4 starts opening, i.e. the pulses of the oscillator 5 of the counting pulses are again fed to the counting input of the counter 4. The pulse of the "Horizontal" parcel is received by the transponder 3 and radiated back (having certain specified parameters or characteristics). Through op0

A certain time corresponding to the sound passing the distance 2b (Fig. 1), at the output of the echo sounder transceiver system 2, an impulse appears which stops the counting operation of the opening counter 4, and the data of the counter 4 is transmitted to the arithmetic unit 7 to complete the calculation of the horizontal opening Ngpo formula Hr T / 4fc2-H. The information from the arithmetic unit is fed to the indicator device of the trawl probe 1.

Claims (1)

Invention Formula A device for measuring horizontal disclosure of a fishing trawl, comprising a trawl probe, a horizontal disclosure sensor, an echo sounder transceiver system, a counting pulse generator, a disclosure counter, a synchronization unit, the horizontal disclosure sensor connected to an echo sounder transceiver system, the output of the counting pulse generator is connected to the counting input of the disc meter which control inputs 5 is connected to the outputs of the echo sounder transceiver system and the synchronization unit, the other output of which is connected to the input of the echo sounder transceiver system. characterized in that, in order to simplify the device and increase reliability 0 of its operation, it is additionally equipped with an arithmetic unit, wherein the horizontal disclosure sensor is made in the form of an acoustic transponder and is fixed in the middle of one of the wings of the trawl, and the echo sounder transceiver system is located in the middle of the upper pick of the trawl, and the trawling probe is connected directly to the entrance the echo sounder transceiver system and the input of the synchronization unit, the outputs of the counter of the discovery are connected to the inputs of the arithmetic unit, and the output of the latter - with the trawl probe. FIG.