RU3678U1 - ACOUSTIC DEVICE FOR RAT BATTERING - Google Patents

Abstract

An acoustic device for rat repelling, containing the first and second pseudorandom pulse generators, an acoustic emitter connected to the output of the power amplifier, characterized in that an additional matching logic AND is introduced, the output of which is connected to the input of the power amplifier, and its first and second inputs are connected to the outputs of the first and second pseudo-random pulse generators.

Description

The utility model relates to devices for repelling harmful animals and can be used to remove from rodents, such as rats, in an ashgstatic way from residential and non-residential / pantries, basements, warehouses, etc. /

Acoustic devices are known for repelling harmful LCDs. So in the device according to the copyright certificate of the USSR No. 1709972; published 05.02.92, the repelling of harmful animals is carried out by a noise generator, made in the form of a coil, fixedly mounted on the handle of a cylindrical resonator and flexible traction. One end of the rod is looped to the resonator diffuser, and the other covers the coil with the possibility of rotation by the human hand. When the rod rotates around the coil, a crack occurs, which is amplified by the resonator.

The advantage of this device is the extreme simplicity of the design, and the existing drawback is the constant need for a person to bring it into action manually.

More perfect is an acoustic device for repelling rodents according to UK patent L 2231999, published 28.11.90. The device consists of an electrically connected control circuit, a generator with a voltage-controlled frequency of the output signal, a power amplifier and a piezoelectric emitter. The device is powered through an AC rectifier.

The control circuit includes pseudo-random and peak signal generators, as well as a strobe generator. There is a voltage at the output of the control :: control circuit, the amplitude of which varies according to the pseudo-random law with the addition of additional sharp peaks and voltage drops at some random times. This complex shape of the signal is fed to the input of the generator with a voltage-controlled frequency of the output signal, which after amplification by the power amplifier is fed to a piezoelectric radiator

Verification in natural conditions of the functioning of devices similar to those made according to the patent of Great Britain L 2231999 showed that they scare away small rodents / mice / quite well, while rats get used relatively quickly / adapt / adapt to

to these devices an acoustic signal.

Additional studies conducted by the authors of this utility model have revealed the need for effective deterrence of rats more broadband than the known devices and, in addition, an intermittent acoustic signal.

The closest in technical essence to the proposed utility model is an acoustic device for repelling harmful animals / fumes / according to the USSR copyright certificate M727766 published 23.04.92. The device contains three generators with a varying frequency of the output signal, a power amplifier, a main switch, an additional switch , emitter of sound signals, pseudo-random pulse generator, three clock generators. A pseudo-random pulse generator controls the additional switch, passing signals from the clock generators to its output.With the help of the received output signal, the operation of the main switch is controlled, which transmits in random sequence to the power amplifier oscillations from generators with a varying frequency. Each of the three generators with a time-varying frequency is made in the form of an additional pseudo-random pulse generator, a reversible pulse counter, a code-naprsenniv converter, and a voltage-frequency converter connected in series. From the output of the power amplifier, a discrete frequency-modulated signal is emitted in the frequency band 20,., 20,000 Hz by the emitter of sound signals.

The disadvantage of a1ogistic device according to the author, USSR certificate No. 1727766 is the complexity of the implementation of electronic circuits and designs, which means significant dimensions and cost.

The purpose of this utility model is to create a simpler, and therefore cheaper, acoustic device for repelling harmful animals, mainly rats.

The goal in the device according to this utility model is achieved by introducing into its composition a logical coincidence circuit AND, to the first and second inputs of which the first and second pseudorandom pulse generator are connected, respectively. The output of the matching circuit is connected to an acoustic emitter through a power amplifier.

The essence of the utility model is illustrated by the figures of the drawings.

2

pulse generator.

The proposed a1 static device consists / cm. Fig. 1 / from a pseudo-random pulse generator 1 with a high pulse repetition rate, a pseudo-random pulse generator 2 with a low pulse repetition rate, coincidence logic AND / 3 /, a power amplifier 4, and a broadband acoustic emitter 5.

The proposed acoustic device for repelling rats is as follows.

At the output of the pseudo-random pulse generator 1 with a high repetition rate of clock pulses, there is an electric signal, which is a broadband pseudo noise, which is fed to the first input of the logical matching circuit I / 3 /. An electric signal is fed to its second input from the input of a pseudo-random pulse generator 2 with a low repetition rate of clock pulses. From the input of the logic circuit And / 3 / the resulting electrical signal after amplification by the power amplifier 4 is supplied to a broadband acoustic emitter 5.

A powerful / with a relative pressure level of 105 dB / automatic pseudo noise with pulse amplitude modulation according to the pseudorandom law and in the frequency band from 5 + 2 kHz to 25 5 kHz is emitted into the air environment of the rats protected by the proposed device

Pseudorandom pulse generators 1 and 2 are made according to the same structural scheme. Each of the generators consists of an initial setup circuit for shift register 6, a clock pulse generator 7, shift register 8, and an exclusive logic circuit ШШ / 9Л

Each pseudo-random pulse generator / 1 or 2 / operates as follows.

When the voltage of the power source is turned on, the initial setup of the shift register 6 writes to one of its bits / A14 at the shift register of the generator 1 and A4, A7 at the shift register of the generator 2 / logical unit / to exclude everything from the state shift register. From the output of the clock pulse generator, 7 pulses with a repetition rate of / 255 1 kHz for generator 1 and / -Q / itOf for generator 2 / are received at the clock input From the shift register, the 8/19th bit shift register of the generator 1 and 8th bit General shift register 2 /.

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are the inputs to the logic circuit exclusive OR / 9 /, If the inputs of the circuit 9 have the same logical levels / two units or two zeros /, then its output has a logical zero, and if different, then the output of the circuit 9 will have a logical unit .

The output of circuit 9 is connected to the input Before shift register 8. With the arrival of each clock pulse from the output of generator 7, circuit 9 analyzes the status of outputs 6117 and 18 / E b and 7 / of shift register 8 and the analysis result is transmitted to its input Until, At the same time, recorded in the bits of register 8 are shifted by one bit to the right / in the direction of the bits with the largest number /.

As a result, at the output of circuit 9, a pseudorandom sequence of pulses with a period f is formed. - 1 where And is the number of bits of the shift register.

In this sequence, the pulses on the time axis are arranged according to a pseudo-random law. The temporal distance between adjacent pulses is a multiple of the cycle period, equal to

For pseudo-random pulse generator 2

Tg j: “510s S 8.5 min., And for a pseudo-random pulse generator 1

9 1 o19

T-JL 1 1H 1 L ac--: 7 "10.1 C.

 SG1 4 X 10

A prototype of the proposed a1chgst rat rat repellent was developed and manufactured. The pseudo-random pulse generators are made on serial microcircuits, the power amplifier is assembled on standard transistors, and a high-frequency electromagnetic speaker is used as an acoustic emitter. The device also has a transformerless AC rectifier, from which the electronic circuits are powered.

The manufactured prototype of the acoustic device was tested for rats by the authors in the zoological department of the rental company Station of preventive disinfection of St. Leterburg,

The effectiveness of the device was judged by the amount of food eaten by rats without irradiation and when irradiated with the acoustic signal of the cell where the feeder and the wings were.

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second day- / grvtii day they stop coming to KopwpiKe, and after a few days in many cases they die,

Thus, according to the proposed useful model, a simple and effective acoustic device for rat repelling was created.

Claims (1)

An acoustic device for rat repelling, containing the first and second pseudorandom pulse generators, an acoustic emitter connected to the output of the power amplifier, characterized in that an additional matching logic AND is introduced, the output of which is connected to the input of the power amplifier, and its first and second inputs are connected to the outputs of the first and second pseudo-random pulse generators.